Digital sampling rate conversion of color TV signal

Details Digital sampling rate conversion of color TV signal Digital sampling rate conversion of color TV signal

1977-08-01

1978-08-08

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 11, 358138, H04N 932

Patent

active

041060539

ABSTRACT:
A converter to translate a sampled color television video signal, consisting of four pulse-code-modulated 8-bit digital samples during each cycle of the color subcarrier, to a corresponding signal consisting of three pulse-code-modulated 8-bit digital samples during each cycle of the color subcarrier. The four 8-bit samples from present and preceeding cycles are stored in several 8-bit input registers. The 8-bit sample in one of the input registers is coupled to an output register once per cycle. Two predetermined weighted combinations of 8-bit samples in predetermined ones of the input registers are coupled to second and third output registers once per cycle.

REFERENCES:
patent: 3946432 (1976-03-01), Goldberg et al.
patent: 4020332 (1977-04-01), Crochiere
patent: 4068266 (1978-01-01), Liao
Goldberg, "PLM NTSC Television Characteristics," SMPTE Journal, Mar. 1976, vol. 85, No. 3, pp. 141-145.

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