Multiplex communications – Wide area network – Packet switching
Patent
1987-11-19
1989-12-26
Griffin, Robert L.
Multiplex communications
Wide area network
Packet switching
370112, 370118, 375 27, 375 47, 358 13, 358133, 358135, H04J 322, H04N 712, H04N 1104
Patent
active
048902837
ABSTRACT:
High transmission and reception quality is achieved in a high definition television system, with minimum intra-channel interference, by digitally encoding the enhancement information and employing spread-spectrum modulation techniques.
REFERENCES:
patent: 2905756 (1959-09-01), Graham
patent: 3707680 (1972-12-01), Gabbard et al.
patent: 4613903 (1986-09-01), Nadan
Otto Detlev
Tsinberg Mikhail
Chin Wellington
Griffin Robert L.
North American Philips Corporation
Rich Marianne R.
Tamoshunas Algy
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