Television compressed audio

Details Television compressed audio Television compressed audio

1981-05-18

1984-01-31

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358134, H04N 5783, H04N 592

Patent

active

044293321

ABSTRACT:
A ten second interval of audio frequency information is sampled, digitized, and stored in a memory. It is then read out of the memory very many times faster, say 400 times faster, converted to analog, combined with television synchronizing signals and transmitted as a signal television frame. That signal is received, converted from analog to digital, stored at high speed, and then read out at an audio frequency rate, to thereby recover the original ten seconds of audio frequency information.

REFERENCES:
patent: 3789137 (1974-01-01), Newell
patent: 3909512 (1975-09-01), Omori
patent: 3950607 (1976-04-01), Southworth
Still Picture Television, NHK Technical Research Lab., Jun. 1979.
Experimental Transmission System of Still Picture Broadcasting, by H. Ando, et al., NHK Laboratories Note, Ser. No. 158, Feb. 1973, pp. 2-15.

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