A time base corrector turns unstable video into stable video
Time Base Correctors (1)
What a Time Base Corrector Does
Total time base error in a typical video can amount to more than 20 or 30 lines and needs to be brought down to the range of 5 to 10 nsec. A modern time base corrector (TBC) can do this job for us. Unstable video goes from the VTR into the TBC and stable video comes out of the TBC, which is then fed into the system.
How a TBC Works
Of course, things are considerably more complex than this description would suggest. The biggest problem is that we need a very large memory to store the video picture in, so that it can be fed out at an even, synchronized rate. Memories that will hold a lot of analog video are very expensive and difficult ...
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