Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version VT1.00C 11/1/84; site vortex.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!bellcore!decvax!vortex!lauren From: lauren@vortex.UUCP (Lauren Weinstein) Newsgroups: net.video Subject: Re: Info Wanted on Closed Captioning Message-ID: <583@vortex.UUCP> Date: Sat, 2-Mar-85 22:42:50 EST Article-I.D.: vortex.583 Posted: Sat Mar 2 22:42:50 1985 Date-Received: Tue, 5-Mar-85 02:18:00 EST References: <1938@iddic.UUCP> Organization: Vortex Technology, Los Angeles Lines: 12 The easiest way to get the complete specs for the closed captioning system, including control codes, etc., is to order the technical manual for the Telecaption Decoder from Sears in Chicago. It's all in there (or at least it is in the old copy I have around here). It may not be worth building your own, however, since it's fairly complex, even though Telecaptioning runs at a very low data rate (2 bytes every other field on line 21). All of the data display operations are handled by custom chips. However, all the data you could possibly desire is in the manual. --Lauren--