[opendtv] Re: White paper from CEA

Oh, I might have misspoken.  They have to pass on the program-related data
in the PSIP, but not necessarily the packets themselves.  I

Frankly, I'm only started to play with SCTE-65.  I note that it has many of
the same table structures as PSIP, but with a few more very odd ones, for
someone who has lived with MPEG-2 private tables for years.

I'm not aware of a current product that transcodes PSIP into SCTE-65, but I
do know of a product family in development (wink) that will eventually do
live remapping of PSIP into SCTE-65.

John Willkie

> -----Original Message-----
> From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx]
> On Behalf Of Ron Economos
> Sent: Monday, October 31, 2005 11:14 AM
> To: opendtv@xxxxxxxxxxxxx
> Subject: [opendtv] Re: White paper from CEA
> 
> If cable companies do pass through PSIP, isn't it a bit of a PID
> mapping problem? Let's say a QAM channel has two or more
> ATSC programs from different stations in the mux. What PID
> or PID's do you put the PSIP on? In ATSC, the PSIP PIP is
> known a priori to be on 0x1ffb. But you can't put multiple PSIP
> streams on PID 0x1ffb in the QAM multiplex, it would be an
> undecipherable mess. At the same time, there's no other scheme
> in the PAT or PMT to point to the PSIP streams if you want to
> use multiple PID's.
> 
> My guess is that PSIP packets are tossed, and the lost information
> may (or may not) be replicated in the cable EPG.
> 
> Ron
> 
> John Willkie wrote:
> 
> >DBS systems have superior EPGs.  The issue is the accuracy of the
> >information.  I believe you are exaggerating about cable companies
> covering
> >up station EPGs with their own, since this plainly IS A CRIME and the
> >stations can even sue over it.  The FCC rules say that cable systems have
> to
> >pass on all "program-related information" for the terrestrial program
> >stream(s) that they carry.   Indeed, several crimes would be involved,
> since
> >by covering up Event Information Tables, they would be denying viewers
> >parental ratings and captioning information that stations are legally
> >required to transmit as of 1/1/2005.  Cable systems have less engineering
> >and programming staff than most TV stations, it's a non-starter that they
> >would hand-code ratings and captioning information.
> >
> >I believe you meant to say that many cable systems offer their own EPGs,
> >which tend to favor cable-only programming.
> >
> >
> >John Willkie
> >
> >
> 
> 
> 
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