Comments on: Behind the Split Screens of TV http://blog.modernmechanix.com/2006/12/04/behind-the-split-screens-of-tv/ Yesterday's tomorrow, today. Sat, 22 Nov 2008 04:24:29 +0000 http://wordpress.org/?v=2.6.2 By: Tom http://blog.modernmechanix.com/2006/12/04/behind-the-split-screens-of-tv/#comment-1028130 Tom Wed, 16 Jan 2008 17:24:05 +0000 http://blog.modernmechanix.com/2006/12/04/behind-the-split-screens-of-tv/#comment-1028130 I have to chuckle; not only did the early TV pioneers use "optical frame buffers"; they also used "optical time-base correction", and "optical gen-lock" (another ancient term and the bane of many local stations' engineering staff); it consists of feeding the remote signal into the local sync generator, such that the remote signal become the reference for the local station... and pray the remote link doesn't go down while you're doing ANYthing! Frame-stores removed THAT headache, at least! And TBCs are what made video recording professional, rather than a toy - the sync is completely replaced, and the capstan of the VTR/VCR is locked to the station reference as well, which provides the very stable picture that asks: "Is it live, or is it Memorex?" I have to chuckle; not only did the early TV pioneers use “optical frame buffers”; they also used “optical time-base correction”, and “optical gen-lock” (another ancient term and the bane of many local stations’ engineering staff); it consists of feeding the remote signal into the local sync generator, such that the remote signal become the reference for the local station… and pray the remote link doesn’t go down while you’re doing ANYthing! Frame-stores removed THAT headache, at least! And TBCs are what made video recording professional, rather than a toy - the sync is completely replaced, and the capstan of the VTR/VCR is locked to the station reference as well, which provides the very stable picture that asks:
“Is it live, or is it Memorex?”

]]> By: Charlie http://blog.modernmechanix.com/2006/12/04/behind-the-split-screens-of-tv/#comment-38541 Charlie Fri, 22 Dec 2006 18:20:09 +0000 http://blog.modernmechanix.com/2006/12/04/behind-the-split-screens-of-tv/#comment-38541 I knew I'd seen an example of CRT's used for data storage somewhere. I just figured out where it was: http://blog.modernmechanix.com/2006/04/20/computer-memories/?Qwd=./ScientificAmerican/6-1955/memory&Qif=memory_2.jpg&Qiv=thumbs&Qis=XL#qdig I knew I’d seen an example of CRT’s used for data storage somewhere. I just figured out where it was:
http://blog.modernmechanix.com.....is=XL#qdig

]]> By: jayessell http://blog.modernmechanix.com/2006/12/04/behind-the-split-screens-of-tv/#comment-35882 jayessell Sat, 16 Dec 2006 17:18:23 +0000 http://blog.modernmechanix.com/2006/12/04/behind-the-split-screens-of-tv/#comment-35882 An article from the era when Televison was appreciated as "magic in every home". I wondered how they were able to sync signals without a frame buffer. Use a big CRT and a camera! To us in the 21st century, it sounds like a clumbsy work-around. Was there ever an electron-tube equivalent that performed the same function without optics? (I would guess it would look like two CRTs joined at the screens. Seperate read and write electron guns?) Electronic computers were in their infancy at nearly the same time. Did they have a similar device for data storage? An article from the era when Televison was appreciated as “magic in every home”.

I wondered how they were able to sync signals without a frame buffer. Use a big CRT and a camera!
To us in the 21st century, it sounds like a clumbsy work-around.
Was there ever an electron-tube equivalent that performed the same function without optics?
(I would guess it would look like two CRTs joined at the screens. Seperate read and write electron guns?)

Electronic computers were in their infancy at nearly the same time. Did they have a similar device for data storage?

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