[opendtv] Re: ATI equivalent to 5th gen LG?
- From: "Dale Kelly" <dalekelly@xxxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Sat, 11 Dec 2004 09:54:45 -0800
> John wrote:
>> The problem with the ATSC guidelines is that it is very difficult to put
>> into words the reception behavior of the Zenith 5th gen chips. As
>> Justice
>> Stewart said of obscenity; "I can't define it, but I know it when I see
>> it."
>> The same for any chipset that works "properly."
No disagreement from this end. The ATSC document is simply a guideline
suggesting certain minimum performance criteia to aid in DTV receiver design
and it makes no attempt to specify implementation or how such a product
should be tested. In the case of multipath performance, it does offer a
number of field captures for use in developing /testing equalizers, if one
chooses to utilize them. A wide variety of receiver designs, with widely
varying degrees of performance, could be ATSC compliant(wrong word). A
problem identified by ATI, in the press release, is that there is no way for
a consumer to know that a receiver meets even the ATSC's minimal
performance.
On the other hand, we do know where to performance test DTV receiver designs
under tough real world conditions and the 5th Gen receiver has established
the current benchmark for such testing.
>
>
>
> ----- Original Message -----
> From: "John Shutt" <shuttj@xxxxxxxxx>
> To: <opendtv@xxxxxxxxxxxxx>
> Sent: Thursday, December 09, 2004 12:20 PM
> Subject: [opendtv] Re: ATI equivalent to 5th gen LG?
>
>
>> The problem with the ATSC guidelines is that it is very difficult to put
>> into words the reception behavior of the Zenith 5th gen chips. As
>> Justice
>> Stewart said of obscenity; "I can't define it, but I know it when I see
>> it."
>> The same for any chipset that works "properly."
>>
>> John Shutt
>>
>> ----- Original Message -----
>> From: "Dale Kelly" <dalekelly@xxxxxxxxxxx>
>>
>>> This announcement could be taken by some to imply that by manufacturing
>>> "several" of their new digital receiver chips to be compliant with the
>>> recently published voluntary ATSC DTV receiver standard, that ATI has
>>> constructed a receiver with excellent all round performance. The fact is
>>> that the ATSC specification should be recognized as a minimum suggested
>>> construction standard and one which will likely perform well in good to
>>> moderate RF conditions. My guess would be that such a receiver would
>>> likely
>>> fall somewhere between 3rd/4th generation performance but I would
>>> clearly
>>> like to see it tested under 5th Gen test conditions to eliminate such
>>> guess
>>> work on my part.
>>
>>
>>
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