Digital recording of television components with improved transit

Details Digital recording of television components with improved transit Digital recording of television components with improved transit

1982-01-12

1984-08-07

Martin, John C.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 13, 375 25, H04N 932, H04N 576, H03K 1301

Patent

active

044646836

ABSTRACT:
A recording system converts standard binary signals into new binary signals that have mostly zeroes occurring in words that are physically unrealizable. Thus when NRZ-I recording is used, long strings of zeroes (which have no transitions in them for easy detection) do not actually occur. Ones do have transitions in them for easy detection, and thus a long string of ones causes no detection problem. The physically unrealizable combinations occur due to the partial correlations of signals, such as Y, B-Y, and R-Y color signals.

REFERENCES:
patent: 4277807 (1981-07-01), Baldwin
Optimal Codes for Digital Magnetic Recording, An article published in The Radio and Electronic Engineer, vol. 47, pp. 172-176, Apr. 1977.

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