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  #31  
Old 11-24-2008, 12:56 AM
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Found some more great early colour TV photos from around I guess 1951 featuring beautiful actress Faye Emerson:

http://images.google.com/images?q=co...=source%3Alife
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  #32  
Old 11-24-2008, 05:31 AM
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Faye Emerson caused a bit of a kerfuffle back in the early days of TV. IIRC, she was host of a show, & the dresses-"gowns" she wore had plunging necklines, which caused quite a stir. I've seen pics of some of 'em, & by nowadays standards, they're pretty tame, but for back then, I guess not.
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  #33  
Old 11-29-2008, 12:22 PM
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The Gene Autry Show in Color 1950

On a website with a rather extensive episode guide for his program it is mentioned that in 1950 CBS commissioned Autry to film 2 of his TV show episodes in color to be used at a demonstration for their color system as to how a filmed program would look. So he filmed two episodes in color in 1950: "The Raiders" and "Double-Barreled Vengeance." These aired on his series in April of 1951. His series airs on Encore Westerns. The first time I saw his series on Encore I wondered why two color episodes popped up in the middle of season #1. I thought they were maybe airing out of order because his final season 1955-56 was done all in color, but when I noticed the copyright dates were 1950 i knew that they must have been done in color for some reason and recently found out that the CBS color demo was that reason.
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  #34  
Old 12-01-2008, 04:16 PM
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CBS color

I'm sure y'all know this, but before browsing here I was reading a Billy Strayhorn biography, and a good part of one chapter deals with "A Drum Is A Woman," CBS's big-splash color production, using the wheel of course. Interesting stuff. Just 100,000 people had sets to watch it, and, of course, they would become useless when NBC won the standards battle.

One other interesting tidbit in that chapter..........earlier, people lined up in NYC to see a color set featuring...................a slice of baloney.


Quote:
Originally Posted by Joel Cairo View Post
...from June 25, 1951-- courtesy of the Google/Life magazine archive (now available on the web)... and restored by yours truly.

Enjoy...!

-Kevin
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  #35  
Old 12-07-2008, 05:51 PM
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CBS - RCA Comparative Demontrations to the FCC

Quote:
Originally Posted by Aussie Bloke View Post
Found some more great early colour TV photos from around I guess 1951 featuring beautiful actress Faye Emerson:

http://images.google.com/images?q=co...=source%3Alife
These ohotos are mislabeled as ALL Faye Emerson photos.

They include additional photos of the CBS field-sequential and the RCA dot-sequential color system and their 1950 demonstrations to the FCC. Faye Emerson is shown in ohly some of them.

Comparative photos of the two systems were published in the magazine, and the color has survived much better in magazine print, than these original Google photos which have faded.

It is interesting to view the following print attachments and the superb color of the CBS System when compared to the poorer performing RCA System.

Enjoy.
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  #36  
Old 12-07-2008, 06:59 PM
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Consumers Reports Engineers went to the FCC demonstrations and they wrote about it briefly in a 1951 issue
of the magazine.
They thought the CBS system was excellent and the RCA System looked pastel and pasty.
RCA made alot of improvments over the next couple of years.
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  #37  
Old 12-09-2008, 11:47 AM
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By these pictures it is no wonder CBS got the early nod-a clear difference, even with those less than ideal photos.
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  #38  
Old 12-09-2008, 08:03 PM
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It seems from all the reports and the recreated/restored equipment that CBS's field sequential system was capable of excellent results...the real problem was its incompatibility with existing sets.

I am not sure how flexible it was in operation switching between cameras etc.

And of course it would have migrated to all electronic pretty quickly.
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  #39  
Old 12-10-2008, 11:27 AM
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Quote:
Originally Posted by ceebee23 View Post
It seems from all the reports and the recreated/restored equipment that CBS's field sequential system was capable of excellent results...the real problem was its incompatibility with existing sets.

I am not sure how flexible it was in operation switching between cameras etc.

And of course it would have migrated to all electronic pretty quickly.
The CBS system also benefitted from careful staging of every demo. I have a copy of a CBS technical memo describing problems with a bright red sweater, developing a cyan halo due to overexposure of the image orthicon. The solution was to substitute a darker sweater.
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  #40  
Old 12-10-2008, 07:49 PM
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Quote:
Originally Posted by old_tv_nut View Post
The CBS system also benefitted from careful staging of every demo. I have a copy of a CBS technical memo describing problems with a bright red sweater, developing a cyan halo due to overexposure of the image orthicon. The solution was to substitute a darker sweater.
I also laughed at that solution. But I would think the CBS camera could have benefited from "Operating under the Knee", just as it was standard practice to reduce halos, and achieve linearity of the three primary signals with the later NTSC TK-41 cameras. The NTSC camera often suffered from poor balance between the IO's and the tubes were often hand selected to find three matching tubes. Reflections in the color splitting dichroics often led to "red shirt ghosts" image to the right of the gentleman's white shirt. This plus differential phase distortion with the NTSC signal, and camera and home receiver complexities of registration and adjustment, it is easy to say that the color reproduction of the CBS Color System was far superior. NTSC camers also benefited from careful staging and adjustment of the cameras.

Ask anyone who had seen demonstrations of the CBS Color System at the Early Television Foundation museum or any of the few monitors/receivers in the hands of collectors. The CBS system simply produced better color quality.

Ed Reitan
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  #41  
Old 12-12-2008, 08:42 PM
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I understand that they used 405 lines for the CBS system so that the signal would fit into the 6mhz channel's that were already in use. What width did the channel have to be to use 525 lines with the CBS system? Understanding of course, that the refresh rate was different and that effects bandwidth usage as well.

David
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  #42  
Old 12-12-2008, 09:45 PM
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Quote:
Originally Posted by dtuomi View Post
I understand that they used 405 lines for the CBS system so that the signal would fit into the 6mhz channel's that were already in use. What width did the channel have to be to use 525 lines with the CBS system? Understanding of course, that the refresh rate was different and that effects bandwidth usage as well.

David
the exact answer depends on a couple of things. CBS cheated on the horizontal resolution a bit, claiming that color helped distinquish objects, and also that the apparent sharpness would be good enough by using "crispening" techniques. Also, they reduced the frame rate to 24 frames per second (144 fields)

If you suppose 525 lines and 30 complete pictures per second, and the same horizontal resolution as black and white, the field sequential color would require 3 times the bandwidth as 525 black and white. The actual video bandwidth for black and white is 1.25 Mhz for the vestigial lower sideband, and 4.2 MHz for the upper sideband (total 5.45 MHz). The color case could also use 1.25 MHz for the lower sideband, but would need 3 x 4.2 = 12.6 MHz for the upper sideband. If the frame rate was reduced to 24 fps, this upper sideband would be reduced to 10.08 MHz.

DuMont produced some closed-circuit field sequential gear using 3 times the black and white rates.

See: http://www.earlytelevision.org/dumon...ial_color.html
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