Date: Wed, 14 May 1997 18:07:39 +0200 (MET DST) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: richard@cogsci.ed.ac.uk (Richard Tobin) Cc: bad@uhf.wireless.net, multimedia@FreeBSD.ORG Subject: Teletext and intercast Message-ID: <199705141607.SAA26588@labinfo.iet.unipi.it> In-Reply-To: <199705141557.QAA03149@stevenson.cogsci.ed.ac.uk> from "Richard Tobin" at May 14, 97 04:56:58 pm
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> I'm using Win/TV (that's the Euro version - teletext instead of intercast). I can't swear, but in the Hauppauge Win/TV, the teletext decoder is a piece of hardware (two chips from Philips), and the associated documentation says that intercast decoding is done in software. So, at most you are missing some piece of software, but you have the same, or more, hardware. For the records, you can do teletext decoding in software as well (there is even some code for this on my home page) and when/if the intercast data format specs are available we can surely modify my code for this as well. At this point I really need a copy of some of the Bt848 pages related to sync management (because the driver tends to loose sync when the signal is weak, and the free-run frequency seems really 60Hz...) and to Vertical Blanking Interval (VBI) acquisition (the video rows carrying teletext and intercast info). Brooktree ignored my numerous requests by fax and email... can some good soul scan the relevant pages and let me have them ? Cheers Luigi -----------------------------+-------------------------------------- Luigi Rizzo | Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it | Universita' di Pisa tel: +39-50-568533 | via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 | http://www.iet.unipi.it/~luigi/ _____________________________|______________________________________
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