From owner-freebsd-multimedia Wed May 14 09:56:19 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id JAA20060 for multimedia-outgoing; Wed, 14 May 1997 09:56:19 -0700 (PDT) Received: from labinfo.iet.unipi.it (labinfo.iet.unipi.it [131.114.9.5]) by hub.freebsd.org (8.8.5/8.8.5) with SMTP id JAA20053 for ; Wed, 14 May 1997 09:56:16 -0700 (PDT) Received: from localhost (luigi@localhost) by labinfo.iet.unipi.it (8.6.5/8.6.5) id SAA26588; Wed, 14 May 1997 18:07:39 +0200 From: Luigi Rizzo Message-Id: <199705141607.SAA26588@labinfo.iet.unipi.it> Subject: Teletext and intercast To: richard@cogsci.ed.ac.uk (Richard Tobin) Date: Wed, 14 May 1997 18:07:39 +0200 (MET DST) Cc: bad@uhf.wireless.net, multimedia@FreeBSD.ORG In-Reply-To: <199705141557.QAA03149@stevenson.cogsci.ed.ac.uk> from "Richard Tobin" at May 14, 97 04:56:58 pm X-Mailer: ELM [version 2.4 PL23] Content-Type: text Sender: owner-multimedia@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > 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/ _____________________________|______________________________________