Apparatus for decoding video address code signals

Details Apparatus for decoding video address code signals Apparatus for decoding video address code signals

1985-05-02

1987-01-27

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358336, 358340, 360 39, 360 331, 360 49, 360 53, 360 722, 369 59, 369 60, H04N 5782

Patent

active

046397922

ABSTRACT:
Apparatus for decoding digitally-coded address signals embedded in video signals recorded on magnetic tape is disclosed. The apparatus can properly decode the address signals at both slow and fast tape speeds and utilizes a variable-frequency oscillator to generate timing signals for decoding the digitally-coded address. The address signals encoded on the magnetic tape normally include an error code which can be detected by conventional error checking circuitry and used to check whether the address signals have been correctly received. The oscillator frequency is adjusted in accordance with an error signal generated by the error checking circuitry until error-free detection of the address signals is achieved.

REFERENCES:
patent: 3999129 (1976-12-01), Kasson
patent: 4215335 (1980-07-01), Doi et al.

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