Path: utzoo!attcan!utgpu!watmath!att!tut.cis.ohio-state.edu!rutgers!apple!vsi1!octopus!avsd!riner
From: riner@avsd.UUCP (John Riner)
Newsgroups: sci.electronics
Subject: Re: Time Base Correctors
Message-ID: <2080@avsd.UUCP>
Date: 21 Sep 89 20:01:40 GMT
References: <11991@cit-vax.Caltech.Edu>
Reply-To: riner@avsd.UUCP (John Riner)
Organization: AMPEX Corporation, Redwood City, CA
Lines: 8

Video time bace correctors (TBC's) are simply an elastic menory which reads
in a signal with its source sync and reads out from another sync (usually
a common to the rest of the system sync). The common implementation
today is to A/D the input video and use digital FIFO techniques to read it
out then D/A convert. This is very simplistic, the actual implementation
can be varied depending on correction range (amount of memory and complexity
of control logic) quality of A/D/A conversion and accuracy of analog
circuitry.