[opendtv] Re: Let them eat cake (and ATSC while they're at it)

  • From: Bob Miller <bob@xxxxxxxxxx>
  • To: opendtv@xxxxxxxxxxxxx
  • Date: Mon, 16 May 2005 13:22:16 -0400

No HM involved.

Bob Miller

John Shutt wrote:

>Yes it can because that is EXACTLY what I have been flapping my gums about 
>since 1999 on this list!  DVB-T provides, me, the broadcaster, with a huge 
>knob on the side of my transmitter that reads "More robust, less bitrate" at 
>one end, and "Less Robust, More Bitrate" at the other.  And I, as the 
>broadcaster, can turn that knob as it suits me, my business model, and my 
>ATSC is fixed at one spot, and as has been demonstrated for the past 7 
>years, too far clockwise on the dial.  As we see, E-VSB is going nowhere. 
>The ATSC itself basically killed E-VSB with the restrictions they placed in 
>the standard as to how many total bits a broadcaster is allowed to dedicate 
>to the robust stream, and what video resolution can be used in the robust 
>stream.  Purely political, not technical, decisions that sunk that ship as 
>it slid down the slipway.
>I have said for YEARS that even if the miracle chips ever became a 
>reality,( as they apparently have as long as a mil spec front end is used, 
>ala the LG Cold Fusion prototype that so far can't be reproduced by anyone 
>else,) it still won't provide mobile, or datacasting to mobile devices, or 
>the newly developed DVB-H to hand held devices.
>Bob's demo showed 4 SD streams, and did not use HM modulation.  I would much 
>rather deliver 12 Mbps to everyone than 19 Mbps to half of my potential 
>----- Original Message ----- 
>From: "Doug McDonald" <mcdonald@xxxxxxxxxxxx>
>>John .... that demo CANNOT be compared to ATSC ***AT ALL***
>>because it is much less than 19.3 Mb/sec. Mobile, bitrate
>>matters, and matters a lot ... independant of power.
>>And that was not a "low power" scenario .... because
>>Bob never drove very far from the transmitter. He never,
>>for example, was at least a few miles beyond the LOS horizon.
>>Doug McDonald

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