[opendtv] Re: LG launches 6th gen ATSC digital TV broadcast receiver chipset

I seemed to have taken away from the R-S presentation given to our SBE chapter last fall that AVSB moneyed around with the Trellis encoder and R/S error correction to create "pseudo" training sequences.
As that requires that the data interleaver and a deterministic R/S reset be under the control of the modulator, AVSB would "break" all existing encoders anyway.
I'm way over my head in the theory, so please don't jump down my throat if I misspoke. 

John
----- Original Message ----- From: "John Willkie" <johnwillkie@xxxxxxxxxxxxx> 


The initial idea of R-S and Samsung was to require all packets to have
training signals in the adaptation field.  This would have required "mere
change" in the A/65 text that forbids adaptation fields in packets carrying 
PSIP packets.  Sounds simple.  But, it would have broken every encoder and
decoder on the marketplace; it wasn't backwards compatible.

Attachment: Normal and AVSB Frames.jpg
Description: JPEG image

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