Video processor with field memory for exclusively storing pictur

Details Video processor with field memory for exclusively storing pictur Video processor with field memory for exclusively storing pictur

1995-02-22

1997-05-20

Kostak, Victor R.

Television

Image signal processing circuitry specific to television

With details of static storage device

348513, 348715, H04N 514

Patent

active

056317131

ABSTRACT:
In a Video processor, an analog composite video signal is converted by an A/D converter (10) to a digital bit sequence in response to a system clock pulse. By using the system clock pulse and horizontal and vertical synchronizing pulses separated from the composite signal, a horizontal blanking interval and a vertical blanking interval are detected by control circuitry (21.about.24) and the read/write operations of a field memory (12) are disabled during the horizontal and vertical blanking intervals and enabled at other times. The picture information from the memory is converted by a D/A converter (13) to analog form in response to the system clock pulse. A multiplex of a digital pedestal level signal and a digital synchronization level signal is supplied to the D/A converter (13) when the memory is disabled.

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patent: 4134131 (1979-01-01), Hopkins, Jr.
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M.J.M. Pelgrom et al.; "A Digital Field Memory for Television Receivers"; IEEE Transactions on Consumer Electronics, vol. CE-29, No. 3, Aug. 1983, pp. 242-250.
European Search Report.

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