Mike123abc
10-08-02, 09:37 AM
When reading the HDTV forum's updates, they had a pointer to this for cable, but when reading it I thought it would be 100x better fit for DBS!
http://www.digitalbroadcasting.com/content/news/article.asp?DocID={66B03F01-D64D-11D6-A78B-00D0B7694F32}&Bucket=Current+Headlines
Essentially it takes 4 HDTV channels and converts them form fixed bit rate to variable bit rate on the fly. It allows a cable system to put 4 HDTV channels in a single channel (up from the current 2). Since a single DBS transponder (8PSK) is about the same (or more if turbo coded) than a single cable channel (256 QAM), this would allow a DBS operator to put 4 HDTV channels on a single transponder.
This would be a major breakthrough for DBS. If DBS could use a single transponder to send the big 4 (ABC/CBS/NBC/FOX) in HDTV, it could allow the top 20-30 DMAs to be served pretty easily. E* could use 10 transponders from each "wing" sat to hit the top 20 markets. They could even throw in WB/UPN/PBS for the top markets with another transponder.
http://www.digitalbroadcasting.com/content/news/article.asp?DocID={66B03F01-D64D-11D6-A78B-00D0B7694F32}&Bucket=Current+Headlines
Essentially it takes 4 HDTV channels and converts them form fixed bit rate to variable bit rate on the fly. It allows a cable system to put 4 HDTV channels in a single channel (up from the current 2). Since a single DBS transponder (8PSK) is about the same (or more if turbo coded) than a single cable channel (256 QAM), this would allow a DBS operator to put 4 HDTV channels on a single transponder.
This would be a major breakthrough for DBS. If DBS could use a single transponder to send the big 4 (ABC/CBS/NBC/FOX) in HDTV, it could allow the top 20-30 DMAs to be served pretty easily. E* could use 10 transponders from each "wing" sat to hit the top 20 markets. They could even throw in WB/UPN/PBS for the top markets with another transponder.