[opendtv] Re: Can Samsung sue digital TV off the air?
- From: John Willkie <johnwillkie@xxxxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Wed, 18 Jun 2008 22:42:35 -0700 (GMT-07:00)
Agree on all points, Adam.
But, I said nothing about decompressing, combining or rendering elementary
streams, just demultiplexing and depacketizing them.
If I remember correctly, the 6,115,074 patent on PSIP provides for a mechanism
that links PMT sections to virtual channels. I suspect other patents apply to
PSIP, but this one is critical to tuning and remote controls.
John Willkie
-----Original Message-----
>From: Adam Goldberg <adam_g@xxxxxxxxx>
>Sent: Jun 18, 2008 4:02 PM
>To: opendtv@xxxxxxxxxxxxx
>Subject: [opendtv] Re: Can Samsung sue digital TV off the air?
>
>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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>
>
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