Originally Posted by mabuttra
The disappearing and reappearing data seems to be a bug in the DTVPal. There is no question that tuning to a channel will download that stations guide data for how ever many hours they send out. The question has always been how frequently, when the DTVPal is in standby mode, the DTVPal does a channel sweep to keep the guide filled in for all the channels. My PSIP data seems to update about every 2 hours.
As EE I would go for a day of gathering I2C commands going to two demod lines and two tuner's chips ... same time, as SW guy I don't see how it would help us:if it's a bug, I can't fix it.
To add some idea how the FW is works: sometimes, when you bring the DVR from standby mode you could see "new stations found ...".
That means: DVR is scanning ALL frequencies during "sleep" mode, parsing PSIP data.
Why it would not parse that part of PSIP what is carry EPG [EIT/ETT] ? It should.