[opendtv] Re: Can Samsung sue digital TV off the air?
- From: "Adam Goldberg" <adam_g@xxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Wed, 18 Jun 2008 19:02:09 -0400
Huh? Without PSIP, using just PSI, yep. Without PSI, using just PSIP, yep.
Using neither? Nope. You need PSI or PSIP (but not both) in order to figure
out which streams go together. You also need one or the other in order to know
where to find the PCR.
You don't need any system-layer constructs in order to decode/present either
AC-3 or video (save for AV sync functions).
-----Original Message-----
From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] On
Behalf Of John Willkie
Sent: Wednesday, June 18, 2008 2:24 PM
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Re: Can Samsung sue digital TV off the air?
"essential" is a legal term of art in this context, but I can prove that one
can fully demultiplex transport streams at the system layer without using PSIP
or PSI. (I have a working demux that can process all the program elements
within a transport stream without using any feedback from the output of the
demux.)
Decompression and rendering of audio and video might need PSIP/PSI, but that
layer is beyond my alleged area of expertise.
As I understand it, U.S. patent 6,115,074 is alleged, by various parties, to be
essential to process and render ATSC signals. Unfortunately, I can't say more
without incurring liability, but this is a "hot area", John, and there are
legal claims in various fora, involving more and more parties. I haven't seen
a press release on any of this, but I see "cases" springing up hither and yon.
"It's all about the IPR."
John Willkie
-----Original Message-----
>From: John Shutt <shuttj@xxxxxxxxx>
>Sent: Jun 17, 2008 12:54 PM
>To: opendtv@xxxxxxxxxxxxx
>Subject: [opendtv] Re: Can Samsung sue digital TV off the air?
>
>
>----- Original Message -----
>From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
>
>> While Samsung has filed the patent enforcement action in the U.S.
>> District Court of Delaware against those companies, Zenith Electronics
>> brought suit against the same parties more than a year ago in the U.S.
>> District Court, Eastern District of Texas for infringement of the
>> company's eight-level trellis-coded vestigial side band technology that
>> became the terrestrial DTV transmission standard in the United States.
>
>The real reason why COFDM-Based DVB-T was not adopted in the US.
>
>> In an interview with EETimes on the subject of Rembrandt a year ago,
>> MPEG LA's CEO Horn said that the ATSC license includes "essential
>> patents" to propagate and use digital TV signals.
>>
>> "We used the term essential in a very strict sense," he said. "When we
>> say 'essential patents,' we mean those truly essential to
>> implementations of the standard and to the use of the ATSC products."
>>
>> All the bells and whistles ancillary to the standard, or certain
>> favorable ways to implement it, are not necessarily considered
>> "essential," he added.
>
>One wonders if FCC mandated PSIP tables are considered "essential."
>
>John
>
>
>
>
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