[opendtv] Re: Integrated DTV PSIP

  • From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
  • To: <opendtv@xxxxxxxxxxxxx>
  • Date: Thu, 1 Dec 2005 17:57:38 -0500

Doug McDonald wrote:

> Does anyone have a box that has an EPG that works well?
> My Accurain box has it, and if a station is transmitting
> it eventually the box will display it. It even shows
> show descriptions if they exist.
> BUT ... the key word is "eventually". It is bog slow ...
> not nearly as slow (up to 8 minutes) as the Dish Network
> EPG (if you scroll past the current time) ... but still
> unacceptably slow.

I think this is exactly the same problem the analog "plug
and play" sets have when set to "auto search" for a PBS
station that transmits time/date. It takes forever,
unless you tell the box to look at Channel X only.

I'm not sure how to solve that problem. If you have to
scan each channel, and it takes some finite waiting time
to get the data from any given channel, you're going to
have a long wait. Hopefully, the EPG data is stored in
non-volatile memory, and updated in the background.

> This thing tries to make up a guide that includes all
> stations, not just the one you are watching. This means
> that it has to scan through the channels ... waiting
> for each and every one (and we have lots) that it can't
> get because the antenna is pointing the wrong way.

But that is the ideal solution, ignoring the latency
issue, right? You want the entire OTA EPG available.

The antenna pointing problem has to be solved even for
recording devices. Meaning, not solved with rotors, IMO.
In principle, that also applies to the analog time
service from PBS. It seems fairly robust, but I'm sure
it too has its limits.

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