Links

NOTE THAT LINKS ARE PROVIDED FOR YOUR INFORMATION ONLY. LINKS LEAD TO SITES THAT ARE OUT OF MY CONTROL, AND THEREFORE I DO NOT AND CANNOT WARRANT THE WEB CONTENT OR ACTIONS OF OTHER SITES OR THEIR OPERATORS.


The date after each link is the last time I checked its existence.  

Return to Interests list

Links Outline:

TV History, TV Antiques, Restoration

Digital TV, HDTV, Plain Old Analog TV

Photography/Cinematography/Imaging

Digital Still Cameras

Color, Color Reproduction, Vision

Railroad Stuff

Blue Headlights

Miscellaneous

top of page


NOTE THAT LINKS ARE PROVIDED FOR YOUR INFORMATION ONLY. LINKS LEAD TO SITES THAT ARE OUT OF MY CONTROL, AND THEREFORE I DO NOT AND CANNOT WARRANT THE WEB CONTENT OR ACTIONS OF OTHER SITES OR THEIR OPERATORS.

TV History, TV Antiques, Restoration

The hub of vintage TV restoration: Videokarma.org (27 Jan 2010)


WOW! Hobbyists building mechanical TV systems! (mechanical scan, but modern electronics)

The Experimental TV Society - lots of history, info -this organization survived only a few years. The First Annual Meeting was on 11 August 2001, 2nd in August 2002. Unfortunately attendance dropped after only two years, and Peter Yanczer, who formed the society, can no longer support it. His pages have been transferred to a new site:

http://www.televisionexperimenters.com/ (1 Jan 2006)

and there is more info about him at the Early Televison Foundation site

http://www.earlytelevision.org/Yanczer/yanczer_index.html (3 March 2014)

Besides all his construction activity on his own gear, Peter has contributed to the restoration of antique receivers at the ETF.

See ETF's mechanical TV pages http://www.earlytelevision.org/scandisk.html (1 Jan 2006)


THE NARROW-BAND TELEVISION ASSOCIATION - - http://www.nbtv.wyenet.co.uk/ (1 Jan 2006)

has a very clean 30-line picture of one of its officers, http://www.nbtv.wyenet.co.uk/index1.htm (1 Jan 2006)

photos of equipment, reports of its annual show-and tell meetings, etc.

The World's Earliest Television Recordings - Restored!  [This is a great site!] - http://www.tvdawn.com/   (1 Jan 2006)

Jim Hawes Mechanical TV Archive - for experimenters http://www.hawestv.com (1 Jan 2006)
and especially http://www.hawestv.com/mtv_page/mtv_page.htm? (1 Jan 2006)

The Early Television Foundation - http://www.earlytelevision.org -from the 1920's to the early days of color in 1955, working towards restoring equipment to functionality (1 Jan 2006)

Bio of Charles Francis (C. F.) Jenkins http://www.acmi.net.au/AIC/JENKINS_BIO.html (1 Jan 2006)

W3XK - Jenkins' and America's first TV station http://userwww.sfsu.edu/~hl/cfj/cfj.W3XK.html (1 Jan 2006)

W9XAT - Twin cities experimental TV - 120 lines http://home.comcast.net/~lsica/w9xat/ (1 Jan 2006)

Interactive Nipkow disc demonstration in Java http://www.uni-koeln.de/phil-fak/thefife/tvmuseum/nipkow/index.html (1 Jan 2006)

Aurora Multi-Standard Converter - Converts PAL, NTSC, 405 line, Baird mechanical formats, etc. http://www.auroravideosys.com/converter/ (1 Jan 2006)

Measurements on the optical system of the Marconi Mark VII Four - Plumbicon colour television camera (BBC, 1966)
http://downloads.bbc.co.uk/rd/pubs/reports/1966-62.pdf (Oct 2011)

HDTV Archive Project - Documenting the early development of HDTV (Oct 2011)
http://www.hdtvarchiveproject.com/About.htm

HDTV Archive Project - list of Broadcast Museums (Oct 2011)
http://www.hdtvarchiveproject.com/Museums.htm

Eyes of a Generation - A Web site dedicated to the collection, restoration, and preservation of classic broadcast television equipment (Oct 2011)
http://64.186.156.135/eyesofageneration/httpdocs2/RCA_Cameras_TK40_41.php


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Operation of the Caselli Pantelegraph, the first practical device to use synchronized scanning of a document, translated from

http://visite.artsetmetiers.free.fr/telegr_autographique.html (1 Jan 2006):

(Go to the site to see the images)

The pantélégraphe of Caselli is an autographic telegraph able to transmit a faithful reproduction of a handwritten letter, a drawing, a plan or of a portrait.

Pantélégraphes de Caselli exposed to the Museum 1861

The pantélégraphe of Caselli used on the line from Paris in Lyon and Marseilles was able to transmit a manuscript of 26 cm X 11 cm in 20 minutes.

This apparatus is made up:

of two series of copper plates.

stylets allowing the inscription of the messages.

Plates of the pantélégraphe of Caselli exposed to the Museum

of a 2 meters length heavy pendulum, connected via rods to the stylets.

Pendulum with electromagnets of the télélégraphe exposed to the Museum


Principle of operation:

On the copper plate of the starting station was posed a metallized paper sheet (silver plated blank paper sheet).
The message was written with an insulating fatty ink .

On the copper plate of the station of arrival was posed potassium cyanide an impregnated paper sheet which broke up into Prussian blue under the action of an electrical current and thus impressed the sheet.

1. The message was written as a preliminary on the paper sheet metallized and posed on the copper plate.
2. The employee sent an aural signal to the receiver and they started their respective pendulum.

Contactor with two positions " to receive - to transmit "

3. When the pendulum carries out a complete oscillation, the stylet traverses the dispatch over all its width.

When the stylet met a conducting part (metallized paper), the current delivered by the pile circulated only in the circuit of the transmitter (the resistance of the wire of line being much higher).
When the stylet met a nonconducting part (fatty ink), the power delivered by the pile did not circulate any more in the internal circuit of the transmitter and could be on in the wire of line. Ink played the role to some extent of a double switch allowing the passage of the current in two different circuits (internal circuit and external circuit).

Pantélégraphe with pile and wire of line

4. The message was transmitted by the wire of line to the receiver.
5. On the plate of the receiver the potassium cyanide was broken up by the electrical current intermittant and the message appeared.

------------

THE ICONOSCOPE: KALMAN TIHANYI AND THE DEVELOPMENT OF MODERN TELEVISION - history of a Hungarian scientist who worked on the iconoscope camera tube (but RCA and Zworykin got all the credit) - http://www.hpo.hu/English/feltalalok/tihanyi.html (1 Jan 2006)

Philo T. Farnsworth ("the father of electronic TV")

http://farnovision.com/index_BB.html (1 Jan 2006)
http://www.lib.utah.edu/spc/photo/p437/p437.html (1 Jan 2006)


Adele Dixon Singing "Television", re-creation of her performance for the opening of BBC "telly" service in 1936 for a film on the subject
http://www.ambisonic.net/tv2london2.html (1 Jan 2006)

British TV history including the lyrics to "Television": http://www.transdiffusion.org/emc/baird/hill/ (1 Jan 2006)

Women in early Chicago experimental TV - During WWII - emmyonline.org had this as a TV Quarterly article, but it has unfortunately expired.
There is a hardcover book available by the same author:
"Women Pioneers in Television: Biographies of Fifteen Industry Leaders"
by Cary O'Dell, Sally J. Raphael

History of Television in Chicago http://www.chicagotelevision.com (1 Jan 2006)

British and American roadcasting terms http://www.transdiffusion.org/intertel/features/name/ (1 Jan 2006)

Ed Reitan's Color Television History - http://www.novia.net/~ereitan/index.html  (1 Jan 2006)

Museum of Television - http://www.mztv.com/  (1 Jan 2006)

Canada Science and Technology Museum - Television http://www.sciencetech.technomuses.ca/english/collection/television.cfm (1 Jan 2006)

Radio History Society -http://www.radiohistory.org/  (1 Jan 2006)

Historical Test patterns and Broadcasting bits - now moved to http://www.farewellanalog.net/  (under construction 1 Jan 2006)

Doug Quick's site - radio history, tv history, links list http://www.dougquick.com/index.html (1 Jan 2006)

Television History - the First 75 Years - http://www.tvhistory.tv/ (1 Jan 2006)

Museum of Broadcast Communications in Chicago - http://www.museum.tv/home.php  (1 Jan 2006)

Museum of American Heritage http://www.moah.org/ (1 Jan 2006)

Telehor Links List http://www.telehor.c3.hu/links/main.html (1 Jan 2006)

The Japanese Broadcasting Company - NHK - http://www.nhk.or.jp/index-e.html  English version  (1 Jan 2006)

and the NHK Museum - http://www.nhk.or.jp/museum/english/main.html  English version  (1 Jan 2006)

My pictures of the NHK museum on this site

TK-41 (Original RCA Color Camera) History http://www.ev1.pair.com/colorTV/TVcams-in-action.html (1 Jan 2006)

A defunct video player system based on microfilm - "EVR" http://www.terramedia.co.uk/video/evr.htm (1 Jan 2006)
http://www.cedmagic.com/history/cbs-evr.html (1 Jan 2006)


WOW! Restoring the original RCA CT-100 Color TV chassis! http://home.att.net/~pldexnis/ (1 Jan 2006)

Steve's Vintage Color TV Page (CT-100 + more!) http://community-2.webtv.net/stevetek/StevesCT100/ (1 Jan 2006)

5 restored CT-100's in a row! http://www.earlytelevision.org/five_working.html (1 Jan 2006)

Color TV turns 50 (TVTechnology article) http://www.tvtechnology.com/features/news/n_Color_TV-01.07.04.shtml (1 Jan 2006)

First Color Sets Sold 50 years ago (Post-Gazette article) http://www.tvtechnology.com/features/news/n_Color_TV-01.07.04.shtml (1 Jan 2006)

CT-100 kept alive by collectors (RCA site) http://www.rca.com/content/viewdetail/1,2811,EI700592-CI258,00.html (1 Jan 2006)

Download historical RCA images (RCA site) http://www.rca.com/content/viewdetail/1,2811,EI700554-CI700323,00.html (1 Jan 2006)

Color TV's 50th Anniversary (NPR program clip) http://www.npr.org/templates/story/story.php?storyId=1789944 (1 Jan 2006)

Article on history of color TV (Las Vegas Sun) http://www.lasvegassun.com/sunbin/stories/leisure/2004/mar/31/516617175.html (1 Jan 2006)

When TV took off - in living color (Wisconsin State Journal) http://www.madison.com/wisconsinstatejournal/opinion/70923.php (1 Jan 2006)

Early RCA Color TV commercial (cartoon + jingle) http://www.kingoftheroad.net/colorTV/RCA-colorTVcommercial.html (1 Jan 2006)

Déjà vu for TV viewers: As color TV turns 50, HDTV feels same growing pains (San Francisco Chronicle) http://www.sfgate.com/cgi-bin/article.cgi%3Ffile%3D/chronicle/archive/2004/03/22/BUG4E5OAHI1.DTL&type%3Dbusiness (1 Jan 2006)

Colour TV in India http://www.indiantelevision.com/headlines/y2k4/mar/mar251.htm (1 Jan 2006)


IEEE color TV milestone plaque presentation at Sarnoff Labs (CT-100 in picture) http://www.ieee.org/organizations/history_center/milestones_photos/colortv.html (1 Jan 2006)

Tube data sheets http://www.tubedata.info/ (1 Jan 2006)

John's Picture Gallery - photos of 60's Zenith, RCA color camera, first RCA color TV at Bloomington factory - http://www.gnv.fdt.net/~aabbeama/Gallery.html (1 Jan 2006)

Hangar 31 Vintage TV Museum http://www.area31.org/vintage.html (1 Jan 2006)

WOW! Chuck Pharis' web page - Chuck works on the ABC HDTV truck, has a long list of credits, and collects/restores vintage TV cameras - lots of content - has a one-of-a-kind historical HDTV camera donated by Zenith Electronics - http://www.pharis-video.com/ (1 Jan 2006)

TV History and Professional stuff http://www.tvhandbook.com/ (1 Jan 2006)

Some Color TV History and a lot of classy cars - http://www.ev1.pair.com/ (1 Jan 2006)

A multi-floor TV Museum - http://hometown.aol.com/bfg721/page6.html (1 Jan 2006)

The National vintage Wireless and Television Museum (in a lighthouse in Hrwich UK!) http://www.nvwm.freeservers.com/ (1 Jan 2006)

The Oklahome Vintage Radio Collectors (OKVRC) http://members.cox.net/okvrc/ which has some neat Zenith sets collected by William Thomas, among other things (click on "Pictures") (1 Jan 2006)

The American Museum of Radio and Electricity in Bellingham WA - http://www.americanradiomuseum.org/site/ (1 Jan 2006)

The Old Tellys Site - http://welcome.to/oldtellys (1 Jan 2006)

Auman Museum of Radio and Television - http://www.geocities.com/TelevisionCity/Set/1930/ (1 Jan 2006)

Dave's Televison collection - http://bertinot.com/tv/ (1 Jan 2006)

Harry Poster Vintage Televisions - http://www.harryposter.com/televisi.htm (1 Jan 2006)

Old TV schematics include RCA CTC-4 and CTC-5 http://www.one-electron.com/FC_Radio.html (1 Jan 2006)

Classic Radios, TVs and Amateur Radio Equipment http://www.pakratz.com/index.html (1 Jan 2006)

Jonz Tellies Gallery http://www.thevalvepage.com/tv/Tele.htm (1 Jan 2006)

Early color receivers - Joh Folsom's site
http://bbs.macmad.org/~jfolsom/homepage.html (1 Jan 2006)

WFLA color history http://www.big13.net/Adrian%20Snow/adrian_snow3.htm (1 Jan 2006)

GE Portacolor http://www.rwhirled.com/portacolor/

Vintage TVs http://www.ct-tv.50megs.com/ (1 Jan 2006)

Early aviators' group appeared on Color TV at the 1964-65 New York World's Fair
http://www.earlyaviators.com/emeeny64.htm (1 Jan 2006)

----------
Opinions on CBS color and other technical aspects of TV:
http://www.blonder.com/html/nessie_and_other_monsters.html (1 Jan 2006)
http://www.blonder.com/index.html (1 Jan 2006)

Anecdotes - use of CBS color for medical TV
http://www.thewritingworks.com/nostalgia.html (1 Jan 2006)
http://www.johnmac.com/nostalgia.html (1 Jan 2006)
http://www.thewritingworks.com/skfthumbnails.html (1 Jan 2006)

More about CBS color:

Joh Folsom's CBS and other sets http://www.labguysworld.com/Cat_CBS_Labs.htm (1 Jan 2006)

Zenith-built CBS color receiver http://www.tvhistory.tv/1948-Zenith-Field-Sequential-Color.htm (1 Jan 2006)

modern LCD color shutter: http://www.colorlink.com/tecpage/pdfs/pw97.pdf (1 Jan 2006)

Field sequential color for NASA http://www.hq.nasa.gov/office/pao/History/alsj/Shooting-Moonwalks.pdf (1 Jan 2006)
duplicated at http://www.russelland.com/speaking_of_video/moonwalk.html (1 Jan 2006)

RCA/Westinghouse field-sequential camera for NASA http://www.williamson-labs.com/480_hal.htm (1 Jan 2006)

Excerpt from
SALANT, CBS, AND THE BATTLE FOR THE SOUL OF BROADCAST JOURNALISM: THE MEMOIRS OF RICHARD S. SALANT
A lawyer's memoir of the CBS color system - states that the Defense Department order stopping
color receiver manufacture was based on the use of a "special type of copper" used in color
sets. [site not found 1 Jan 2006]

---

Mexican field-sequential color patent: http://www.mexconnect.com/mex_/travel/tonysarticles/tbdid1003.html (1 Jan 2006)
Did You Know That....the world's first patent for a color TV was granted to a Mexican inventor?
Guillermo González Camarena was just 23 years old in 1940 when he obtained US Patent No. 2,296,022 protecting his invention of a "Trichromatic" system for color television transmissions.

The method is sometimes referred to as a "field sequential" system. Basically, a motor-driven disk, consisting of three segments in the primary colors - red, blue and green - rotates behind the camera lens. The resulting film is monochromatic (black and white). If it is replayed fast enough through an identical disk, precisely synchronized with the original filming, then each separate single-color "filtered view" is retained by the eye long enough to complete a full-color image.

The system became the first color TV system to be approved by the U.S. Federal Communications Commission, and in 1950 was accepted as the "standard" system. Its major disadvantage was that the signals used to transmit the images did not allow a good picture to be obtained on any TV that was only capable of displaying black-and-white images. [more on the web site]


More on Mexican color TV inventions: http://www.museum.tv/archives/etv/M/htmlM/mexico/mexico.htm (1 Jan 2006)


---
Bell System Picturephone

Ads, pictures, text: http://webserve.govst.edu/users/gaskrau/picphone.html (1 Jan 2006)

----

Docunentation on Philco "Apple" color tube, other vintage radio & TV topics http://www.myvintagetv.com/index.html (1 Jan 2006)

-----

Zenith History
http://company.monster.com/zec/ (1 Jan 2006)

http://www.zenith.com/sub_about/about_corp_history.html (1 Jan 2006)

Hiistory of Channel 1 http://www.anarc.org/wtfda/channel1.htm (1 Jan 2006)

"The Story of Color Television" http://www.princetoninfo.com/200111/11114c01.html (1 Jan 2006)

Underwater use of video cameras, discusses compatibility of NTSC/PAL gear http://www.camerasunderwater.co.uk/index.html (1 Jan 2006
[used to have a discussion of NTSC/PAL/SECAM history, warts and all, unfortunately dropped]

Worldwide TV Standards - http://www.videouniversity.com/standard.htm  (1 Jan 2006)

Designer of the original NBC Peacock, J.B.Graham (with original artwork!) http://www.big13.net/NBC%20Peacock/NBCPeacock1.htm (1 Jan 2006)

French 819-line system http://home.swbell.net/pjdyer/frenchtv.htm (1 Jan 2006)

Links to broadcst equipment collectors http://www.lionlmb.org/quad/quadlink.html (1 Jan 2006)
http://www.labguysworld.com/VTR_Links.htm (1 Jan 2006)

Ed Cushman's quad tape machine collection http://www.efn.org/~ecushman/index.shtml (dead link as of 1 Jan 2006)

Old computers, TVs, links etc. http://www.glowingplate.com/welcome.shtml (1 Jan 2006)

Introduction to video technology, starting with animated drawings http://www.mtsu.edu/~dsmitche/rim458/materials/Video.html (1 Jan 2006)

Image dissectors, classic and modern - http://www.aade.com/tubepedia/1collection/tubepedia.htm (1 Jan 2006)

TV pioneers - http://members.aol.com/aj2x/tvpionrs.html (1 Jan 2006)

A montage of early color TV demonstration films http://www.ev1.pair.com/colorTV/FCCmontage.html (1 Jan 2006)

Extensive list of TV links - http://www.telehor.c3.hu/links/main.html (1 Jan 2006)

Classic color TV test patterns/logos including the NBC peacock slide http://www.ggninfo.com/TP6.htm (1 Jan 2006)

NBC Peacock and Chimes http://www.classicthemes.com/50sTVThemes/themePages/nbcLivingColor.html

The Colour Television Receiver Film (page has a link to 21MB MPEG file) http://www.vintagebroadcasting.org.uk/ctr.htm (1 Jan 2006)


---------

A passage:

THURSDAY, JUNE 24, 2004 CONSUMER ELECTRONICS DAILY — 9
BMC Industries, once among the world’s leading suppliers of aperture masks for CRT-based TVs and PC monitors, filed for bankruptcy protection Wed. and said it had reached an agreement to sell its Vision-Ease eyeglass lens business to I.E.A.P.X, a Tex.-based limited partnership. BMC, which filed for bankruptcy inMinn., said Vision-Ease will “continue operating without interruption.” Details of the filing, including a list of creditors, weren’t available at our deadline. The company said in late Dec. that it would close its aperture mask operations, including a plant in Cortland, N.Y., by mid-2004. BMC, once a major suppliers of aperture masks for direct-view TVs up to 36", suffered as sales of flat-panel TVs increased. It expanded production in the mid-1990s to include aperture masks for PC monitors and opened a plant in Mullheim, Germany. BMC also sustained a major blow in 1999 when the International Trade Commission rejected its complaint that sought to have antidumping duties imposed on aperture masks exported by Japanese and Korean manufacturers. BMC had argued that the U.S. industry producing aperture masks was being “materially injured” by “less than fair market value” imports. BMC’s production had declined since the mid-1990s and it closed 3 lines and laid off 489 employees at the Cortland plant in 1998.
---------

Links to the EVR "Electronic Video Recording", a color video player invented by Peter Goldmark of CBS Labs. Based on black-and white microfilm! It was overtaken by Beta video tape in the early 1970's. (1 Jan 2006)

http://www.labguysworld.com/Cat_Motorola.htm

http://www.cedmagic.com/history/cbs-evr.html

http://www.labguysworld.com/WeirdStuf.htm

http://www.terramedia.co.uk/video/evr.htm

http://www.terramedia.co.uk/video/evr2.htm

http://palimpsest.stanford.edu/byform/mailing-lists/amia-l/2003/12/msg00109.html

--------

The FCC History Project (1 Jan 2006)
http://www.fcc.gov/omd/history/

John K. Folsom's early color collection (1 Jan 2006)
http://bbs.macmad.org/~jfolsom/homepage.html

Marcel's TV Museum (27 Mar 2004)
http://www.marcelstvmuseum.com/

Historical Electronics Museum, Linthicum, Maryland (1 Jan 2006)
http://www.hem-usa.org/

Museum of arly video editing equipment and techmiques - (1 Jan 2006)
http://www.sssm.com/editing/museum/

Broadcast equipment archive (1 Jan 2006)
http://www.oldradio.com/archives/hardware/
RCA page http://www.oldradio.com/archives/hardware/TV/RCA-TV.htm (1 Jan 2006)

Old radios http://www.oldradio.cz/ (1 Jan 2006)

Mikey's Vintage Technology Page http://www.eclipse.co.uk/mikey/index.html (1 Jan 2006)

TVs and Colot TVs form the time of their beginnings (in German) http://bs.cyty.com/menschen/e-etzold/archiv/TV/tv.htm (1 Jan 2006)

The Old Tellys Site http://www.penders.cwc.net/otindex.html (1 Jan 2006)

DuMont Telecruiser remote truck (Oct 2011) (thanks to Cliff Benham for bringing this to my attention)
http://chalkhillmedia.org/telecruiser/

Links to books on TV and TV history including on-line books from the Prelinger Archives:
http://www.earlytelevision.org/biblio.html

Smoke signals to VOIP - a Communications timeline: (Oct 2011):
http://www.nextiva.com/voip/smoke-signals-to-voip-a-communications-timeline.html

------

History of ac power (mains) frequency, which determined the 60 Hz NTSC / 50 Hz PAL scan rates:
In the U.S., Westinghouse used 60 Hz for flicker-free incandescent lighting, while a much lower frequency (often 25 Hz, but sometimes lower) was used for powering large motors. (The motors would operate best on DC, and better at lower frequency AC than at 60 Hz.) Also, synchronous converters for other frequencieswere developed to operate best with 60 Hz on one side. In Germany, AEG had a virtual monopoly, and their choice of 50 Hz spread widely, except in Britain, which didn't adopt 50 Hz uniformaly until after WWII.
(For more information on ac standards, see
Hughes, Thomas P.,
"Networks of Power: Electrification in Western Society, 1880-1930",
Johns Hopkins University Press, Baltimore, USA, 1993)

-------
Below may contain some history and/or current stuff or both:

Scanning and subcarrier standards http://www.sptv.demon.co.uk/tvstandards.html (1 Jan 2006)

Homepage of Cameras Underwater - http://www.camerasunderwater.co.uk/ (1 Jan 2006)

Exposition on lines, frames, frequencies http://www.icce.rug.nl/~soundscapes/VOLUME02/Lines_frames_and_frequencies.html (1 Jan 2006)

(Lack of) International standards http://members.fortunecity.com/wtfdamem/Standards.htm (1 Jan 2006)

Excerpt on politics role in establishing French TV http://www.fitzroydearborn.com/chicago/television/sample-country.php3 (dead link as of 1 Jan 2006)

Chronologies of media developments in 1948 and 1949
http://www.terramedia.co.uk/Chronomedia/years/1948.htm#FrenchTV

http://www.terramedia.co.uk/Chronomedia/years/1949.htm#FrenchTV (1 Jan 2006)

Antique radios and TVs traded/sold http://www.radiolaguy.com/ (1 Jan 2006)

Vintage small video cameras - http://www.labguysworld.com/Museum009.htm (1 Jan 2006)

History of Television Technology (links) http://members.aol.com/aj2x/oldtv.html (1 Jan 2006)

Ham TV in 1930, TV History Links http://www.eht.com/oldradio/arrl/2002-10/early-ham-tv.htm (1 Jan 2006)

1957 RCA Color TV Remote Control Film (missing soundtrack) http://www.archive.org/movies/details-db.php?collection=prelinger&collectionid=08448 (1 Jan 2006)

A Nipkow scanning disk with Legos? http://users.swing.be/philippe.jadin/nipkowdisk.htm (1 Jan 2006)

Site about RCA history http://www.tvdays.com/rca.htm (1 Jan 2006)

Victor G. Barker's site - TV History, especailly technical details of BBC developments - http://my.integritynet.com.au/barkertv/ (1 Jan 2006)

top of page


Digital TV, HDTV, Plain Old Analog TV


NOTE THAT LINKS ARE PROVIDED FOR YOUR INFORMATION ONLY. LINKS LEAD TO SITES THAT ARE OUT OF MY CONTROL, AND THEREFORE I DO NOT AND CANNOT WARRANT THE WEB CONTENT OR ACTIONS OF OTHER SITES OR THEIR OPERATORS.

These are not in any particular order, and many are mainly for professionals.

How to buy a HDTV http://www.buyinghdtv.com/ (1 Jan 2006)

WOW! Comprehensive MPEG2 Video compression TUTORIAL - on this site (still here!)

Digital TV - A Cringely Crash Course - TV from Mechanical to Digital for the layman http://www.pbs.org/opb/crashcourse/tv_grows_up/ (1 Jan 2006)

Zenith Electronics - http://www.zenith.com
go to http://www.zenith.com/index.asp?url=./sub_hdtv/hdtv_index.html
look over the list on the right side: "DTV explained" for the layman, "DTV History" and "Technical Papers" for the engineering-minded (1 Jan 2006)

Interactive guide to Digital and HDTV - http://www.samsungusa.com/dtvguide/ (1 Jan 2006)

Color TV tutorials
http://www.ntsc-tv.com/ntsc-main-01.htm (1 Jan 2006)

A simple interactive tutorial on color and color TV: http://www.colorado.edu/physics/2000/tv/colortv.html (1 Jan 2006)

TV History and Professional stuff http://www.tvhandbook.com/ (1 Jan 2006)

Distant reception of TV (TV “DX”) – including some Digital TV DX – http://pages.cthome.net/fmdx/hdtv.html (1 Jan 2006)

Doug Lung's RF page - practicalities of TV broadcasting transmitters, digital and analog - http://www.transmitter.com/  (1 Jan 2006)

Stuart Calcote HDTV links - http://www.calcote.com/hdlinks.htm  (1 Jan 2006)

The Advanced Television Systems Committee - http://www.atsc.org  (1 Jan 2006)

Society of Motion Picture and Television Engineers - http://www.smpte.org/  (1 Jan 2006)

TV Technology Magazine - http://www.tvtech.com/ - humorously written columns by “The Masked Engineer” for video production technical people  (1 Jan 2006)

Worldwide TV Standards - http://www.videouniversity.com/standard.htm  (1 Jan 2006)

Broadcast Station Location Page - http://radiostation.com/kodis/  (1 Jan 2006)

Federal Communications Commission - home page - http://www.fcc.gov/ (1 Jan 2006)

HDVision Studios – HDTV Program Production - http://hdvstudios.tv/hdv_index.html  (1 Jan 2006)

Chips for motion JPEG and MPEG4 http://www.chipwrights.com/ (1 Jan 2006)

TV Tech-notes - wide-ranging from current DTV to historical trivia http://www.tech-notes.tv/ (1 Jan 2006)

Guide to the SCART socket on European TVs http://www.lpilsley.co.uk/scart.htm (1 Jan 2006)

A TV DX'er in the Netherlands http://www.geocities.com/TelevisionCity/Lot/2941/ (1 Jan 2006)

NASA Comparison of HDTV and NTSC imaging http://eol.jsc.nasa.gov/newsletter/ISAG_HDTV_NTSC/ (1 Jan 2006)

Web site for reporting digital TV reception http://www.hdtvpub.com/ (1 Jan 2006)

Explanation of NTSC luma and chroma resolution http://members.aol.com/ajaynejr/vidres.htm (1 Jan 2006)

Sync and active line timing in digitized TV http://www.intersil.com/data/tb/tb368.pdf (1 Jan 2006)

Components for color prjectores and displays http://www.colorlink.com/ (1 Jan 2006)
Products: http://www.colorlink.com/products/products.html
Including color LCD shutters http://www.colorlink.com/products/pdfs/switch.pdf

Lip-sync error analysis http://www.pixelinstruments.tv/LipSyncDoc/LipTrackDoc.htm (1 Jan 2006)

Digital TV Tuner cards for PCs (retail sales site) http://www.copperbox.com/lite/htpc.php (1 Jan 2006)

FCC digital TV reception maps:
http://www.fcc.gov/mb/engineering/maps/


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top of page

-------------------------

Photography/Cinematography/Imaging


NOTE THAT LINKS ARE PROVIDED FOR YOUR INFORMATION ONLY. LINKS LEAD TO SITES THAT ARE OUT OF MY CONTROL, AND THEREFORE I DO NOT AND CANNOT WARRANT THE WEB CONTENT OR ACTIONS OF OTHER SITES OR THEIR OPERATORS.

------------

Amazing hidden images in the Wright Brothers photos - extracted by modern scanning - http://digital.lib.ecu.edu/exhibits/wright/closer.html (1 Jan 2006)

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American Museum of the Moving Image
"Shutters Sprockets and Tubes: How Moving Image Machines Work"
http://www.ammi.org/sprockets/menu.htm (1 Jan 2006)


Directory of photography related websites and discussion groups - http://www.about-arts.com/photography/ (1 Jan 2006)

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Early and very beautiful color photographs made in Russia by successive RGB exposure, restored: http://www.loc.gov/exhibits/empire/ (1 Jan 2006)

---------------

Disposable camera exposure (1 Jan 2006):
http://www.clubcamera.org/features/disposables.html

Quoting the site: "According to Fuji consumer information all their cameras have single element glass lenses. The Quick Snap Flash has 27 exposures of Superia X-TRA 800 speed film. The lens is an f10 with a focal length of 32 mm. The shutter speed is 1/125th of a second."

"Kodak says their best is the Max HQ Flash. It comes with an f10 30mm Ektanar plastic double element lens. The shutter speed is also 1/125th. There are 27 exposures of 800 speed High Definition film. The recommended distances are from 3 feet to infinity outdoors or up to 15 feet inside with flash."

This means that, in full sunlight, disposable cameras overexpose the nominal film rating by 16 times, or four stops. The great latitude of color negative film allows this to be recovered in the printing process. This allows for photos to be made in the shade or under cloudy conditions, and extends the range of the small strobe flash in these cameras.
------------------------------

The Cinerama Adventure - http://www.cineramaadventure.com/ (1 Jan 2006)

Widescreen and Early Color Movies Museum - [excellent!] - http://www.widescreenmuseum.com/ (1 Jan 2006)

Widescreen Museum links page:
http://www.widescreenmuseum.com/widescreen/links.htm

Seattle Cinerama - http://www.cinerama.com/ (1 Jan 2006)
and their Cinerama Experience page http://www.cinerama.com/experience.html (1 Jan 2006)

more Seattle Cinerama - http://members.aol.com/cinerama8/index.cinema.html (1 Jan 2006)

Cinerama links - http://history.acusd.edu/gen/filmnotes/cinerama.html (1 Jan 2006)

What is Cinerama? - http://www.amps.net/newsletters/Issue11/11_ciner.htm (1 Jan 2006)

The Cinerama Dome theater - http://www.seeing-stars.com/Theatres/CineramaDome.shtml (1 Jan 2006)

Cinerama at the Lumiere organization (in French) - http://www.lumiere.org/techniques/cinerama.html (1 Jan 2006)

Cinerama Smilebox format for TV transfers - (Aug 2011) - IMO, this turns out to work surprisingly well when viewed on a flat screen HDTV
http://www.cineramaadventure.com/smilebox.htm
http://www.youtube.com/watch?v=8Mv2Pvmhxi8

Stereoscopic photography - http://www.stereoscopy.com/  (1 Jan 2006)

The Society for Information Display - http://www.sid.org/  (1 Jan 2006)

Beginner's guide to digital feature production http://www.filmmakermagazine.com/spring1999/beginner_guide.html (1 Jan 2006)

Antique motion picture equipment collection http://www.xs4all.nl/~wichm/cinimage.html (1 Jan 2006)

Kodak - Frequently Asked Questions - Availability of Old Roll Film Sizes (1 Jan 2006)
http://www.kodak.com/cluster/global/en/service/faqs/faq0063.shtml
There are some places on the internet that sell reloaded film cartridges for obsolete film sizes, but I am not personally familiar with them and cannot make recommendations

The Devin tricolor camera - one example of a type of camera that exposed three plates simultaneously, for red, green, and blue
(site author asks $3 donation to support document scanning)
http://www.butkus.org/chinon/devin/devin.htm
(October 2011)

Short history of color photography (October 2011)
http://www.iml.unibas.ch/SKRIPTEN/ScriptColor/color_photography_history.pdf

Example of a color negative scan (Oct 2011)
http://www.marginalsoftware.com/HowtoScan/DiscussionsTone/scanning_color_negative_film_2.htm


"Pumpkin" - writings of Doug Kerr, P.E. (ret.) on optics, color, digital photography, and many other things: (Oct 2011)
http://dougkerr.net/pumpkin/#Optics

Imbibition transfer machine for Technicolor (Sep 2011) (excerpt from "Colour Cinematography", (1951) by Adrian Cornwell-Clyne
http://home.earthlink.net/~stevekraus/imbibe.html

page on Dufaycolor (Sep 2011)
http://www.brianpritchard.com/Dufay.htm

Discussion of color rendering of LED lighting panels:
http://www.cinematography.com/index.php?showtopic=52551

David Doubley: Dye transfer printing archives (Aug 2011)
http://www.daviddoubley.com/DyeTransfer.htm

Comparison of visually neutral spectra in Kodachrome and Ektachrome (Oct 2011)
http://www.apug.org/forums/forum40/81778-love-hate-kodachrome-why-all-passion-here.html

Technicolor (Fortune Magazine October 1934)
http://astortheater.org/film17.html


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Digital Still Cameras


NOTE THAT LINKS ARE PROVIDED FOR YOUR INFORMATION ONLY. LINKS LEAD TO SITES THAT ARE OUT OF MY CONTROL, AND THEREFORE I DO NOT AND CANNOT WARRANT THE WEB CONTENT OR ACTIONS OF OTHER SITES OR THEIR OPERATORS.

"How a Digital Camera Works"
http://www.shortcourses.com/choosing/how/03.htm
) (1 Jan 2006)


"A Study of Spatial Color Interpolation Algorithms for Single-Detector Digital Cameras"
http://www-ise.stanford.edu/~tingchen/
(1 Jan 2006)

Digital Camera Resource - http://www.dcresource.com/  (1 Jan 2006)

http://www.dpreview.com/  (1 Jan 2006)

http://www.pcphotoreview.com/  (1 Jan 2006)

http://www.consumerreview.com/index.html  (1 Jan 2006)

http://www.normancamera.com/  (1 Jan 2006)

jpeg tutorials - how still image compression works -

 

 

http://ee.www.ecn.purdue.edu/~ace/jpeg-tut/jpegtut1.html (1 Jan 2006)

http://www.dbusch.com - info, humor, book discounts (1 Jan 2006)

http://www.cyberbohemia.com - excerpts from the author's book on acquiring, making, using images on the web (1 Jan 2006)

http://www.david-taylor.pwp.blueyonder.co.uk/ - personal experience & tips on digital photography and many other topics (1 Jan 2006)

http://www.pcworld.com/ - info on anything PC related (1 Jan 2006)

3 Megapixel CMOS http://www.ic-media.com/ [CMOS is becoming more mainstream high quality than it was when this was introduced] (1 Jan 2006)

Digital Camera Views, for all digital cameras. Detailed specifications, information, up-to-date news, reviews, hints & tips, Q&A, value added links, extensive tools
collection, online tutorials on photography. http://www.dcviews.com/ (1 Jan 2006)

Cameratown.com http://www.cameratown.com (1 Jan 2006)

Comparison of 35mm film and digital cameras:
http://www.janrik.net/MiscSubj/2007/FilmVsDSLRTests20070528/A_Comparison_of_Film_and_DSLR_Images.html


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Color, Color Reproduction, Vision:

NOTE THAT LINKS ARE PROVIDED FOR YOUR INFORMATION ONLY. LINKS LEAD TO SITES THAT ARE OUT OF MY CONTROL, AND THEREFORE I DO NOT AND CANNOT WARRANT THE WEB CONTENT OR ACTIONS OF OTHER SITES OR THEIR OPERATORS.

---------------------------------

Light Measurement handbook http://files.intl-light.com/handbook.pdf. (1 Jan 2006)

-----------------------------

You think you’ve got it tough getting reasonable color reproduction of a photograph on your ink jet printer?  Think about the print process industry, where the clients want to know and control how it will look in low-quality newsprint without firing up the huge presses to test each advertisement.  This is the problem of color management –getting the desired color when the process is capable of it, or predicting the result when it isn’t.  (And in many cases, like your home printer, predetermining or automatically deciding what distortions give the most pleasing result when exact reproduction isn’t possible.)

Charles Poynton - a lot of good material on Gamma and Color – see his FAQs and tutorials - http://www.poynton.com/Poynton-color.html – Find out what gamma is and how it affects your computer monitor. (1 Jan 2006)

Poynton on Wide Gamut Image Capture (Youtube)
http://www.google.com/url?q=http://www.youtube.com/watch%3Fv%3DTIE5rvmpHSg&sa=U&ei=7ZJ4TpfcMYfh0QGH7-jzDA&ved=0CB4QtwIwBQ&usg=AFQjCNHs8kCEEDTwuqM3WM4zHlLKGTHxVQ

The Colour Quiz - What are the primary colors? What is color temperature? What Colour is the sun? What's wrong with this picture? - (gets into math, but you can learn a lot without it) - http://origins.colorado.edu/~ajsh/colour/index.html (1 Jan 2006)

Chronological Bibliography on color theory - http://www.fadu.uba.ar/sitios/sicyt/color/bib.htm   (1 Jan 2006)

The Coloring Pages - http://colorpro.com/   (1 Jan 2006)

Color Science - various topics - http://www.physics.sfasu.edu/astro/color.html (1 Jan 2006)

Color and vision database - many of the measured characteristics of color vision tabulated here - http://cvision.ucsd.edu/  (1 Jan 2006)

International Color Consortium – ICC - http://www.color.org/ (1 Jan 2006)
This is the organization that established the “ICC profiles” that are supposed to make all our computer color equipment work together – used in Mac’s for some time, supposed to be integrated in Windows 98, built into Adobe Photoshop 5.0 and above.  The standards are published on this site, but like most standards, they are very dry and tough reading unless (or even if) you are a professional in this area.

IColor gamut and gamut mapping http://www.techexchange.com/thelibrary/ColorGamut.html (1 Jan 2006)

Gamut mapping work at CIE - http://www.colour.org/tc8-03/ - a little bit of what used ot be at the U. Derby web site, as developed by international standards bodies (and the same professor). (1 Jan 2006)

Gamut Mapping: Evaluation of Chroma Clipping Techniques for Three Destination Gamuts http://www.cis.rit.edu/people/faculty/montag/PDFs/057.PDF (1 Jan 2006)

Gamut Mapping in Munsell Constant Hue Sections http://www.inventoland.net/imaging/JEI/159.PDF (1 Jan 2006)

Colour Physics Group at Leeds - links page - http://www.leeds.ac.uk/ccd/cph-link.htm (1 Jan 2006)

MonacoSystems color management - http://www.monacosys.com/ - now part of X-rite http://www.xrite.com/home.aspx (1 Jan 2006)

Datacolor Color Management Solutions: http://www.datacolor.com  (1 Jan 2006)

Pictographics International - Candela color management - http://www.picto.com/index.html -- commercial software/hardware for color calibration/characterization  (1 Jan 2006)

Inter-society Color Council (ISCC) - http://www.iscc.org/  (1 Jan 2006)

Munsell color Science Laboratory - http://www.cis.rit.edu/mcsl/  (1 Jan 2006)

efg's Color Reference Library and Computer lab projects http://www.efg2.com/Lab/Library/Color/ (1 Jan 2006)

CIE - International Commission on Illumination (the granddaddy of color organizations) (Apr 2011)
http://www.cie.co.at/

CIE tables in xls file form (Apr 2011)
http://www.cie.co.at/index.php/LEFTMENUE/index.php?i_ca_id=298

Reconstruction of Wright's normalization of experimental data to create the original CIE color curves (April 2013):

http://www.cis.rit.edu/mcsl/research/broadbent/CIE1931_RGB.pdf

Wright's normalization (starting on p.106) (April 2013)

http://macboy.uchicago.edu/~eye1/PDF%20files/03Chapter1097.pdf


---------
Color - Rochester Institute of Technology (1 Jan 2006)

http://www.cs.rit.edu/~ncs/color/

leading to applet pages:

Chromaticity Diagram and Color Gamut Applet
http://www.cs.rit.edu/~ncs/color/a_chroma.html

Spectrum applet
http://www.cs.rit.edu/~ncs/color/a_spectr.html

Color Space Conversions Applet
http://www.cs.rit.edu/~ncs/color/a_spaces.html

Color Matching Game
http://www.cs.rit.edu/~ncs/color/a_game.html

FReD - the floral reflectance spectra database: (Oct 2011)
http://precedings.nature.com/documents/1846/version/1
www.reflectance.co.uk

Complete Color FAQ | RIT CIS MCSL - Munsell Color Science Laboratory - questions from the public to color scientists
http://www.cis.rit.edu/mcsl/faq0#920

Kruithof curve - preferred range of color temperature vs. illumination level
http://en.wikipedia.org/wiki/Kruithof_curve

Discussion of preferred color temperature (Oct 2011)
http://www.candlepowerforums.com/vb/showthread.php?265785-GE-sunshine-5000K-CFL

----

Optical Interference Coatings (Oct 2011)
http://www.u.arizona.edu/~waisze/report.html

Tungsten-halogen reflector lamps cold mirror coating spectra: (Sep 2011)
http://zeiss-campus.magnet.fsu.edu/articles/lightsources/images/tungstenlampsfigure4.jpg

Optimum 3-channel color camera responses (BBC, 1966) (Aug 2011)
http://downloads.bbc.co.uk/rd/pubs/reports/1966-56.pdf

Observer variation in modern displays:
http://edstim.univ-nantes.fr/jdoc2010/USB-JDOC2010/sources/ARTS-Abhijit-SARKAR-Article.pdf

Technicolor red fog in telecine (BBC, 1966) (Aug 2011)
http://downloads.bbc.co.uk/rd/pubs/reports/1966-63.pdf

--------

Edwin Land's Retinex Theory and retinex-based image processing

retinex-related processing (Aug 2011)
http://www.tgeorgiev.net/RetinexAndGradients.pdf

Multiscale retinex with color resotration (Aug 2011)
http://www.tpub.com/content/nasa1997/NASA-97-ist50-zur/NASA-97-ist50-zur0002.htm

Multiscale retinex (Aug 2011)
http://dragon.larc.nasa.gov/background/pubabs/papers/ret40.pdf


------------

Excellent interactive color space calculators:

including effects of various illuminants on the MacBeth Colorcheckr chart:
http://www.brucelindbloom.com/ (1 Jan 2006)

If you use the CIE Color Calculator, be aware that changing the white point inititiates a necessary Chromatic Adaptation Calculation, which changes the xyY coordinates.to adapted values. The adapted xyY coordinates are not shown, but are used for all the numbers lower in the page. To find what the adapted xyY values are, use the Chromatic Adaptation Calculator page..

----

Color temperatures of light sources: http://www.digigo.com/color_temperature.htm (1 Jan 2006)

Color of a candle http://www.astronomycafe.net/qadir/q490.html (1 Jan 2006)

Theoretical max lumens per watt, other terms: http://www.topbulb.com/faq/glossary.asp (1 Jan 2006)

Much more (112 pages pdf doc) on LEDs, lumens per watt, etc. http://www.netl.doe.gov/ssl/workshop/Report%20led%20November%202002a_1.pdf (1 Jan 2006)

-----------------------------------------

Links relating to MacAdam ellipses:

http://www.kruschwitz.com/macadam.htm (1 Jan 2006)

http://www.colorsystem.com/projekte/engl/40mace.htm (1 Jan 2006)

Discrimination ellipsoids (in German) http://www.zwisler.de/scripts/farbwahr/node11.html (1 Jan 2006)

"The Representation of Color Metrics and Mappings in Perceptual Color Space" http://kiptron.psyc.virginia.edu/steve_boker/ColorVision2/ColorVision2.html (1 Jan 2006)
--------------------------------------------------

Munsell Color Science Lab, including Data for the Munsell Renotation http://www.cis.rit.edu/mcsl/ (1 Jan 2006)

A Practical Analytic Model for Daylight - http://www.cs.utah.edu/vissim/papers/sunsky/ (1 Jan 2006)

--------------------

AIM - Accurate Image Manipulation for Desktop Publishing:
The proprietor of this site, Timo Autiokari, has picked an unnecessary fight with Charles Poynton (see his color FAQ site above), and has a semi-religious attitude toward gamma correction, but has much good stuff. He shows (which every TV effects generator designer already knows) that operations affecting the spatial frequency response (smoothing or sharpening) need to be done in the linear domain to maintain local average brightness and avoid excessively bright highlights. He also has effective demonstrations that the local image background affects the perception of gray scale uniformity, and thus affects what quantization will be acceptable in a given image. He makes the valid point that images that are quantized and bit-reduced by JPEG so that they are acceptable for display are often not acceptable for input to image processing/manipulation. However, he jumps to the conclusion that only linear quantization is acceptable for input images, and further makes a claim (which most researchers would refute) that a gamma of 1.25 results in perceptually uniform quantization. His illustration of this is a set of gray scales on a white background, which of course is really illustrating his valid point on the effect of surround. The quantiziation may be close to perceptually uniform for this particular image, but his other illustrations show how greatly it can vary depending on background level. The proper conclusion is stated elsewhere in his site: perceptually uniform quantization depends on the background brightness. Other research confirms that the response of the eye under average conditions is close to a cube law, or at least a power greater than 2, so if you must choose one number to be least likely to show contours on a wide range of material and with the coarsest quantizing, the sRGB choice of 2.2 is a good one. (The author of this site also implies that sRGB is somehow a sinister plot of equipment manufacturers to sacrifice all quality for the sake of economy.)

sRGB is related to television gamma practice, which has found in fact that uncorrected CRT gamma is greater than 2.2, giving an overall system gamma of about 1.25. The actual gamma correction curve used in TV cameras includes an offset that results not only in a stretching of blacks but also a clipping of extreme blacks. This, combined with flare light in the display and the usually darker picture surround, gives an overall visual impression of linear gamma and an s-shaped transfer curve that results in pleasant pictures on a CRT display. Of course, this all needs to be undone before applying the image to processing or output to another type of device. However, of all the devices that might be catered to, CRTs are the least troublesome, since their input/output relationship always is characterized by a smooth power law that approximates the requirements of the eye for perceptually uniform quantization ( I am ignoring phosphor highlight saturation, which can occur for projection devices with high current density). Other devices such as printers and LCD displays have much worse linearity and gamut problems, and differ greatly among themselves. The over-all gamma of 1.25 results in some increase of saturation, which compensates for flare light, and also distortion of hues towards the primary colors. The hue shift with an over-all gamma of 1.25 is generally considered small enough to be acceptable for concumer display, but in accurate graphics work it would be desirable to eliminate it, as the author points out with some extreme examples. All that is necessary in processing to avoid the hue shift is to return the over-all system gamma to 1.0. To judge this effect for yourself in normal images, pick a picture with some reasonably saturated color(s) between the primaries and secondaries (e.g. orange or green-yellow or purple), and apply a gamma (mid tone) adjustment using your favorite photo program. You will see a strong effect on the gray-scale rendition, of course, and you will be able to judge the relative importance of the hue shift. If the original image contains skin tones, you of course will want to judge them also.

It would be desirable perhaps to develop a process for adjusting tone rendition that maintained saturation and hue. I haven't tried it, but conceptually, one develops an adjustment layer (pixel-by-pixel value of the adjustment, for those not familiar with PhotoShop) from the luma channel, then applies it multiplicatively to the linear red, green and blue channels equally. The goal is to maintain the ratios of the primaries, while adjusting their level according to the desired tone rendition curve.

There have been many proposals to introduce linear processing in TV systems over the years, mainly as a means of improving the detail contrast in highly saturated colors and reducing color smear. (Note that professional TV cameras do include linear matrixing of the sensor outputs to achieve the correct taking characteristics for the TV primaries - that does not affect this discussion.) The smearing and lack of detail (especially visible on reds) in TV is due to the very low bandwidth of the chroma signals (typically 1/10 of the luma bandwidth in analog composite signals). However, the effect at edges of saturated objects is to roll off the brightness as well as the saturation, giving a plausible effect of an object of nearly constant color with a shaded edge. When a linear domain is used for transmitting the reduced bandwidth chroma signals, the edge can be seen to have a reduced saturation that looks quite unnatural, as though the color had faded towards gray. Linear processing where all signal components have high bandwidth does not suffer from this effect, but then it does not suffer from color smearing either.

Of course, if you can afford the bits, it is better to have linear input to your image process - no argument - but this is a requirement due to the subsequent non-linear processes which enhance the contrast of artifacts, not a direct need for display to the viewer, where quantization in the gamma-corrected domain is preferred.

The site author has taken care to gamma correct the posted images so that they display correctly on the the typical uncalibrated monitor (which may have a gamma of 2.2 or higher). I believe you can learn a lot from the illustrations of image quantizing and processing on this site, just be careful to judge for yourself what your eyes tell you, and make your own decisions about the philosophy.
http://www.aim-dtp.net/ (1 Jan 2006)

----------------------------------------------------------------------

Color Spaces - History and Illustations http://www.colorsystem.com/index.htm (1 Jan 2006)

-------------------

Monitor calibration links

Calibrating Your Monitor [my favorite for its small-step dark and light gray scales] http://www.jasc.com/support/kb/articles/monitor.asp (1 Jan 2006)

Monitor calibration and gamma assessment http://www.photoscientia.co.uk/Gamma.htm (1 Jan 2006)

Monitor Calibration Using The Gray Chip Chart http://www.daproducts.com/calibrate/ (1 Jan 2006)

Monitor adjustment utility "Powerstrip" http://entechtaiwan.net/util/ps.shtm (1 Jan 2006)

Gamut matching for multiple tiled LCD displays (PowerPoint presentation) Shows use of RGBW color wheel - http://www.cs.princeton.edu/~gwallace/papers/Color%20Gamut%20Matching%20for%20Tiled%20Display%20Walls.ppt#1 (1 Jan 2006)

---------------

Color deficiency and anomaloscopes:

red/green anomaloscope using LEDs - wavelength specs: (1 Jan 2006)
http://www.medmont.com/distributors_for/refract/neitz/ot2.htm

abstract: Nagel anaomaloscope seasonal variation large due to temperature sensitivity of instrument (1 Jan 2006)
http://www.nature.com/cgi-taf/DynaPage.taf?file=/nature/journal/v363/n6429/abs/363546a0.html

all-color anomaloscope (1 Jan 2006)
http://www.roland-consult.de/Downloads/Prospekte/Allfarben.pdf

anomaloscope sex and race variations, representationism, philosophy (1 Jan 2006)
http://www.nyu.edu/gsas/dept/philo/faculty/block/papers/sexism.html

achromat's acount (1 Jan 2006)
http://www.u.arizona.edu/~chalmers/misc/achromat.html

color deficiency including chromaticity diagram with color confusion line (1 Jan 2006)
http://www.4colorvision.com/perform.htm#abnormal

color blindness factoids (1 Jan 2006)
http://www.bios.niu.edu/johns/colorblindness.htm

What is "tetartan" color defect? see
http://www.richmondproducts.com/HRR.htm
Also, much info on color test plates, standards, etc. (1 Jan 2006)

------------------

Web color scheme generator http://wellstyled.com/tools/colorscheme2/index-en.html (1 Jan 2006)

---------------------------

Fancy-schmancy artsy-fartsy inkjet printing: "giclee" (say "zhee-clay") (1 Jan 2006)

http://giclee.netfirms.com/authenticity.html

http://giclee.netfirms.com/

http://www.gicleeprint.net/abtGclee.shtm

http://www.artonsilk.com/whatgiclee.htm

---------------------------------------------

Illusions of motion in still images - http://www.ritsumei.ac.jp/~akitaoka/saishin-e.html (1 Jan 2006)

-----------------

sites with neon and fluorescent lamp spectra (1 Jan 2006)

http://www.truesun.com/main/phillips.htm
(real-looking spectrum)

http://www.truesun.com/main/lumichrome%201XC.htm
(caution - block "spectrum" hides true peaks)

http://www.truesun.com/main/verilux.htm (neodymium)

-----------------

A paper on a beam-splitting prism for 3-sensor color cameras with CIE XYZ analysis curves:
http://www.radioeng.cz/fulltexts/2001/01_03_18_20.pdf (Oct 2011)

DSLR ICF (Internal Cut Filter) Transmission Spectra (Oct 2011)
http://www.beyondvisible.com/BV3a-ICF.html

Chromagenic camera for illuminant detection - this camera uses two sets of spectral responses to determine the color of scene illumination from the scene itself (Oct 2011):
http://scpv.csail.mit.edu/posters/chromagenic.pdf

Bird plumage color gamut (Oct 2011)
http://www.yale.edu/eeb/prum/pdf/Stoddard%20&%20Prum%202011.pdf

Reproducing Rainbows: Color in the Digital Environment : RED Camera and DSC-brand charts
http://library.creativecow.net/battistella_david/DSC-Charts/2

X-Rite color measurement products:
http://www.xrite.com/home.aspx

A short (four pages) tutorial on color measurement from the Byk Gardner company (April 2013):

https://www.byk.com/fileadmin/BYK/downloads/support-downloads/instruments/theory/color/en/Intro_Solid_Color.pdf

A blog about spectroradiometer variance by John the Math Guy (April 2013):

http://johnthemathguy.blogspot.com/2013/02/a-spectrophotometric-romance.html?goback=%2Egde_122173_member_212071191

----------

Computerized lithographic printing - the process that produces the custom photo books you can buy:

HP Electroink:

http://h10088.www1.hp.com/gap/Data/en/us/ElectroInk_FAQ_4.pdf

Richard Benson: The Printed Picture - book covers everything from the earliest methods to the newest computer lithography

http://www.benson.readandnote.com/


top of page

Railroad Stuff

NOTE THAT LINKS ARE PROVIDED FOR YOUR INFORMATION ONLY. LINKS LEAD TO SITES THAT ARE OUT OF MY CONTROL, AND THEREFORE I DO NOT AND CANNOT WARRANT THE WEB CONTENT OR ACTIONS OF OTHER SITES OR THEIR OPERATORS.

The B&O RR Museum - a great place that had a disaster in the February 16-17, 2003 snow storm - the roundhouse roof collapsed on the most precious parts of the collection, and they need your money!

http://www.borail.org/ (1 Jan 2006)

See the B&O RR Gallery on this site

RR related and other pretty pictures on this site

Railroad museums and clubs - http://www.reed.edu/~reyn/museums.html  (1 Jan 2006)

The MidContinent Railway Museum, North Freedom, WI - http://www.mcrwy.com (1 Jan 2006)

The Seashore Trolley Museum in Kennebunkport, ME - good links - http://www.trolleymuseum.org/ (1 Jan 2006)

The Illinois Railway Museum - largest in the U.S., though not the best web site - http://www.irm.org/ (1 Jan 2006)

20th Century RR Club - http://www.20thcentury.org/ (1 Jan 2006)

East Troy Electric Railroad Museum - http://www.easttroyrr.org/ (1 Jan 2006)

Page of RR Museum links http://www.mytrain.com/trainlinks.html (1 Jan 2006)

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Pennsylvania Tourinst Railroads (1 Jan 2006)


http://www.caboosenut.com/

http://www.waynehistorypa.org/

http://www.rrmuseumpa.org/

http://www.mhrailroad.com/indexP.html

http://www.pa-trolley.org/

http://www.incline.cc/

http://www.csc.clpgh.org

http://spikesys.com/EBT/

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Durbin and Greenbrier Valley RR http://www.mountainrail.com/


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Blue Headlights

NOTE THAT LINKS ARE PROVIDED FOR YOUR INFORMATION ONLY. LINKS LEAD TO SITES THAT ARE OUT OF MY CONTROL, AND THEREFORE I DO NOT AND CANNOT WARRANT THE WEB CONTENT OR ACTIONS OF OTHER SITES OR THEIR OPERATORS.


In a few words, there are two types of "blue" headlights:

1) The real thing - High Intensity Discharge (HID) arc lamps found on a few luxury cars

2) Fake, dangerous, and illegal painted, dyed or coated replacement bulbs

 A fairly balanced article in USAToday on June 7, 2001 - the NHTSA will study them - see http://www.usatoday.com/money/autos/2001-06-07-xenon.htm (1 Jan 2006)

Flash (March 2001): there are legal bluer (whiter, not really blue) replacement bulbs available now from Sylvania.

See some discourse on this site or

See more at:

http://www.howstuffworks.com/question387.htm (1 Jan 2006)

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LED traffic signals

HP "traffic green" LEDs 505 nm: http://chemistry.beloit.edu/BlueLight/pages/hp/18may98.htm (1 Jan 2006)

study of luminous intensity required http://195.178.164.205/IEAprocure/traffic/doc_pdf/Boycesth.pdf (1 Jan 2006)

caltrans demo http://www.dot.ca.gov/hq/esc/ttsb/electrical/lighting.htm (1 Jan 2006)

brief illustrated paper on LEDs vs. incandescent traffic signals http://mrsec.wisc.edu/edetc/LED/traffic_light/ (1 Jan 2006)
and comparison of spectra http://mrsec.wisc.edu/edetc/LED/traffic_light/spectra.htm (1 Jan 2006)

RESEARCH RECAP: ARE YELLOW TRAFFIC SIGNALS BRIGHTER THAN THEY NEED TO BE? http://www.imsasafety.org/journal/mayjun/mayjun4.htm (1 Jan 2006)

Compatibility of LED Traffic Signals with Existing Traffic Signal Field Equipment http://www.editraffic.com/pdf/led-article.pdf (1 Jan 2006)

Paper with color chart of traffic signals CIE coordinates http://eetd.lbl.gov/Controls/publications/P500-03-012F-AIV.pdf (1 Jan 2006)

LED theory/application http://mrsec.wisc.edu/edetc/LED/ (1 Jan 2006)

White LEDs with improved efficacy http://www.lrc.rpi.edu/resources/news/pressreleases/spemethod.asp (1 Jan 2006)


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Miscellaneous

NOTE THAT LINKS ARE PROVIDED FOR YOUR INFORMATION ONLY. LINKS LEAD TO SITES THAT ARE OUT OF MY CONTROL, AND THEREFORE I DO NOT AND CANNOT WARRANT THE WEB CONTENT OR ACTIONS OF OTHER SITES OR THEIR OPERATORS.

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Geocaching

Learn about this fun activity, seek or hide a cache: http://www.geocaching.com/ (1 Jan 2006)


Buxley's Geocaching Waypoint http://brillig.com/geocaching/ (1 Jan 2006)

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Wright Brothers photos, diaries, puyblications http://digital.lib.ecu.edu/exhibits/wright/ (1 Jan 2006)

Including:

Amazing hidden images in the Wright Brothers photos - extracted by modern scanning - http://digital.lib.ecu.edu/exhibits/wright/closer.html (1 Jan 2006)

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Halfway to the North Pole is not at latitude 45 degrees - http://www.uwgb.edu/dutchs/geolwisc/geostops/halfway.htm (1 Jan 2006)

Geodesy explained - http://wiseman.brandonu.ca/newpage2.htm (1 Jan 2006)

World clock - http://www.timeanddate.com/worldclock/  Is there daylight savings time in Sydney, NSW, Australia? And what time is it in Morocco? Find out here. (1 Jan 2006)

Experimental Aircraft Association Annual Fly-In, "Airventure" - http://www.airventure.org/
Oshkosh, Wisconsin becomes the busiest airport in the world once a year in late July – A great place to visit even if you don’t fly – walk around and see all the beautiful home-built planes, talk to the builders, and see a great air show too. (1 Jan 2006)

Satellite and aerial photos of much of the U.S. - http://www.terraserver.com/  This started as a free demonstration by Microsoft of a Terabyte server. It shows some free and some pay-per-view satellite and aerial pictures of a goodly portion of the U.S. – See your own home or a view of landmarks like the Statue of Liberty. (1 Jan 2006)

http://www.david-taylor.pwp.blueyonder.co.uk/ - info on receiving weather satellite pix (1 Jan 2006)

Address and Phone number search - http://www.anywho.com – find anyone’s address and phone number in the U.S., reverse lookup, etc. Note that this site, like others of its kind, does not have 100% success - sorry I don't have more links on this topic here. (1 Jan 2006)

Lightning strike maps - https://thunderstorm.vaisala.com/ - see where lightning has been striking the U.S. in the last few minutes.  A simple view is free, or you can pay to subscribe for more detailed views. (1 Jan 2006)

Nab information on lightninng detection http://www.nab.org/scitech/techcheck/tv/tv061305.pdf (1 Jan 2006)

UV facts on a UV meter manufacturers site http://www.safesun.com/ (1 Jan 2006)

Drive-In Theaters in Wisconsin, Past, Present, Future http://www.moviesbystarlight.com/ (1 Jan 2006)

Weather statistics for U.S. cities - http://www.weatherbase.com (1 Jan 2006)

Anti-spyware programs for your computer - http://www.pcworld.com/howto/article/0,aid,114727,pg,4,00.asp
or go to www.pcworld.com and search for the subject (1 Jan 2006)

Schenectady Museum - http://www.schenectadymuseum.org/ (1 Jan 2006)


MANUFACTURING TOURS ONLINE

Manufacturing tours online: chocolate, plastic bottles, denim, engines, candy, etc. etc. (1 Jan 2006)
http://manufacturing.stanford.edu/

Browse the Keyword Map of the Internet http://www.kwmap.com (1 Jan 2006)

American Solar Challenge "Solar Rayce" (Solar Car Race) http://www.americansolarchallenge.org (1 Jan 2006)

WLW historic radio station http://hawkins.pair.com/wlw.shtml (1 Jan 2006)

National Semiconductor's Analog University - http://www.national.com/analogu/index1.html (1 Jan 2006)

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Tube electronics references (Spice models, dta sheets, theory, etc.) (1 Jan 2006)

http://members.aol.com/sbench101/

http://www.michelletroutman.com/tubes.htm

http://www.radau5.ch/start.html

http://www.nj7p.org/Tube.php

http://www.mif.pg.gda.pl/homepages/frank/

Vacuum Tube Design (RCA Manufacturing Company, Inc.) 1940 - full text (April 2013)

http://archive.org/details/VacuumTubeDesign

The Thermionic Vacuum Tube and Its Applications, Van der Bijl, 1920 - full text (April 2013)

http://books.google.com/books?id=g84LAAAAYAAJ&dq=vacuum+tube+books&printsec=frontcover&source=in&hl=en&ei=nqeSS6-BLoqjlAfr6tH6AQ&sa=X&oi=book_result&ct=result&resnum=11&ved=0CD0Q6AEwCg#v=onepage&q&f=false

Vacuum tubes (covering theory of all types): http://mysite.du.edu/~etuttle/electron/elect27.htm#Theory  (April 2013)


http://www.the-planet.org/

http://www.thetubestore.com/links.html (sales and links to theory pages)

http://micro.magnet.fsu.edu/electromag/java/diode1/

equations for input/output impedances etc. of common circuits http://www.aikenamps.com/Equations.htm

http://www.lindsaybks.com/bks/vtrcvr/-vacuum tube regenerative radio receiver

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Photochromic lenses (eyeglasses that darken in the sun) (Oct 2011)
http://www.perret-optic.ch/optometrie/correction_optique/Photochromie/Photochromie_gb.htm

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A page of links about home appliances and electronics, courtesy of Ms. Sarah Cogan (science tutor) and her student, Abby: (October 2011)
http://www.ziprealty.com/buy/appliances.jsp

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