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| Re: Remember TV Test Patterns? (252406) | |||
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Re: Remember TV Test Patterns? |
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Posted by JohnL on Tue Oct 9 21:46:11 2007, in response to Re: Remember TV Test Patterns?, posted by SelkirkTMO on Tue Oct 9 21:41:18 2007. I think that we can rest assured that a mechanical scanning system with 30 lines (curves?) would have been soon replaced.But I do remember the early days of steam TV in the UK, when it was a big deal that the BBC introduced regional opt-outs. The technical breakthrough that allowed this was frequency synchronization across the nation, a non-trivial exercise when there were no quartz oscillators. Do you remember adjusting horizontal and vertical holds on your TV? |
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