kellym@iddic.UUCP (Kelly McArthur) (02/27/85)
Does anyone have any information on closed caption reciever/decoders that print text onscreen for the aid of deaf viewers? In particular, I'm interested in how this data is encoded, and what what formats are used to represent transmitted information (text, control characters, etc). In this area, I believe that the only place you can find this type of equipment is Sears, and they want $279 for the converter. Is anyone aware of other sources for this and similar devices? Mailed responses will be most appreciated, and I will mail my findings to anyone who requests them. Thanks I.A. -- Kelly McArthur 63-281 tektronix!iddic!kellym Information Display Division Tektronix, Inc Wilsonville, Oregon 97070 (503) 685-4536
lauren@vortex.UUCP (Lauren Weinstein) (03/03/85)
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--