Two channel compatible high definition television broadcast syst

Details Two channel compatible high definition television broadcast syst Two channel compatible high definition television broadcast syst

1983-09-20

1986-08-12

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 12, 358141, H04N 942, H04N 938

Patent

active

046059504

ABSTRACT:
A television system for broadcasting high definition television on two channels of a direct broadcast satellite, a first of which carries a compatible 525-line picture. A second channel carries an augmentation signal, which in conjunction with the signal from the first channel, produces at a receiver tuned to both channels a 1050-line high definition television picture with a 5:3 aspect ratio. Time multiplex component signals and processing are employed, and high fidelity sound is provided by digital audio signals transmitted in time sequence with the video. There may be as many as five sound channels so as to provide three-channel stereophonic audio and various combinations of data and sound channels.

REFERENCES:
patent: 3970776 (1976-07-01), Kinuhata et al.
Jackson et al, System Concepts in High Fidelity Television, IEEE International Broadcast Convension 18-21, Sep. 1983, pp. 135-139.
Kerns H. Powers, Compatibility Aspects of HDTV, High Definition Television Colloquium 82, Oct. 18-21, 1982, pp. 1.6-1-1.6-17.

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