TV video data input apparatus

Details TV video data input apparatus TV video data input apparatus

1983-11-22

1986-05-13

Masinick, Michael A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 21R, 358903, 364514, 340799, 365189, H04N 514

Patent

active

045890200

ABSTRACT:
A TV video data input apparatus samples and quantizes a video signal from a TV camera and feeds the quantized data into a computer. The input apparatus is provided with means for generating sampling clocks different from each other while selectively changing over the sampling clocks correspondingly to characteristics of a TV picture. An A/D converting means is driven by the sampling clocks to convert the video signal into digital video data. The output of the A/D converting means is written in a memory. Thus, it is possible to switch over the writing of the video data into a memory having a short access time at a high speed and that into a memory having a long access time at a low speed.

REFERENCES:
patent: 4148070 (1979-04-01), Taylor
patent: 4498081 (1985-05-01), Fukushima et al.

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