It actually seems like an ideal use of a sub-channel that contains longer term consolidate PSIP for multiple channels. People with certain broke legacy TV's would rapidly learn not to go there.
- Tom johnwillkie wrote:
There's -- alas -- an issue with transmitting more than 12 hours of EPG info. It breaks some early TV receivers, in at least one case, preventing the set from tuning in ANY station. Some of these folks paid tens of kilobucks on their tvs, and they want to get their money out of it before upgrading. Gotta thank the ATSC for never wanting to do conformance testing ... John Willkie -----Mensaje original----- De: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] En nombre de Manfredi, Albert E Enviado el: Monday, July 09, 2007 10:23 AM Para: opendtv@xxxxxxxxxxxxx Asunto: [opendtv] Re: PSIP, cable guide info, and Zap2It John Shutt wrote:The problem with using PSIP is that you either need a dual tuner card/stb or must put up with losing your picture every so often as the ATSC tuner scans all the available OTA channels for EPG information. Tuners could do the channel scanning/guide harvesting while the STB is "off", but if the box is never turned "off" it would never have the opportunity to refresh the "master" EPG. Further, only 12 hours of EPG data are mandated by A/65, so a 2 AM channel scan may not cover the flowing day's prime time line up.The end result is that for me, PSIP is utterly useless. Assuming the stations bothered to include their schedule, which in itself is a big assumption, trying to find what will be on tomorrow, to set the recorder, is very time consuming and invariably bears no fruit. Ideally, stations would transmit several days ahead, and ideally, receivers would store the data when they are idle. As long as both are not done routinely, the system is only useful for those watching in real time.At one point very early in the ATSC process, it was suggested that PBS stations (presumably being 'neutral' in the ratings wars) would carry program information for all OTA stations in the market, easing the task of OTA viewers keeping a current and complete program guide. Unfortunately that was never implemented, and I'm not sure that is even possible today given the way A/65C is worded.That would have been nice, or a TV guide that actually still had useful info in it, or SOMETHING. If PSIP clocks are routinely screwed up, and program info is missing or very inconvenient to access, one has to wonder what good it is. Bert----------------------------------------------------------------------You can UNSUBSCRIBE from the OpenDTV list in two ways:- Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.
-- Tom Barry trbarry@xxxxxxxxxxx ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways:- Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org
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