Television – Bandwidth reduction system – Format type
Patent
1997-09-08
2000-02-29
Britton, Howard
Television
Bandwidth reduction system
Format type
348724, 370486, 375200, 455 31, H04N 538
Patent
active
060315768
ABSTRACT:
A single, common HDTV transmitter transmits a digital composite signal including station signal information of all broadcast stations in a primary market. A broadband signal of e.g., 120 MHz is established, accommodating up to 20 permanent virtual circuits (PVCs) in the broadband signal. The station signals linked to the common transmitter are packetized and digitally compressed and delivered for broadcast in a selected transmission mode such as ATM. Tuning into a broadcaster's signal will be accomplished at a receiver location by a receiver decoding the PVC address permanently assigned to the respective station. The signal is decompressed to its original HDTV format by a receiver, which may comprise a personal computer or video card, to drive the HDTV display and audio system. Each receiver is equipped with a highly directional antenna aimed at a common an antenna broadcasting the composite signal from the common transmitter.
REFERENCES:
patent: 4947244 (1990-08-01), Fenwick et al.
patent: 5513180 (1996-04-01), Miyake et al.
patent: 5729825 (1998-03-01), Kostreski
patent: 5852612 (1998-12-01), Kostreski
T.S. Perry, ed., HDTV and the New Digital Television, IEEE Spectrum, Apr., 1995, pp. 34-69.
Britton Howard
Cohen Jerry
Erlich Jacob N.
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