Television signal frame number converter capable of determining

Details Television signal frame number converter capable of determining Television signal frame number converter capable of determining

1988-12-23

1990-01-02

Peng, John K.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 11, 358105, H04N 701, H04N 1120, H04N 718

Patent

active

048917010

ABSTRACT:
In a television signal frame number converter for converting an input television signal having a first frame number per second into an output television signal having a second frame number per second in accordance with an interpolation coefficient, a processing unit processes two successive frames of the input television signal by a frame interpolation process to produce a processed signal. A memory unit memorizes the processed signal in synchronism with a write-in address signal given by a first frame synchronizing signal of the input television signal and is read out by a read-out address signal given by a second frame synchronizing signal of a reference television signal having the second frame number per second. The converter determines the interpolation coefficient in accordance with a time interval between a write-in start timing of the memory unit and a read-out start timing of the memory unit.

REFERENCES:
patent: 4163249 (1979-07-01), Michael et al.
patent: 4240101 (1980-12-01), Michael et al.
patent: 4386367 (1983-05-01), Peterson et al.
patent: 4587556 (1986-05-01), Collins
patent: 4609941 (1986-09-01), Carr et al.
patent: 4719509 (1988-01-01), Sakamoto
patent: 4739405 (1988-04-01), Sumida

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