Video signal processing apparatus for displaying stored video si

Details Video signal processing apparatus for displaying stored video si Video signal processing apparatus for displaying stored video si

1992-04-14

1994-05-10

Powell, Mark R.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

348441, 348731, H04N 544, H04N 701, H04N 550

Patent

active

053113179

ABSTRACT:
A video signal processing apparatus in which a video signal channel-selected and received by a tuner is supplied through a switch to a video output circuit and a signal from the video output circuit is supplied to a cathode ray tube (CRT), thereby being displayed on a picture screen of the CRT. Also, the video signal from the tuner is supplied to a video memory of one frame, for example, and an output of the video memory is supplied to the switch. Further, the video signal from the tuner is supplied to a non-signal detecting circuit and a control signal from the non-signal detecting circuit is supplied to the video memory and the switch. Then, when there is no video signal, the switch is changed in position to allow the signal stored in the video memory to be output. Therefore, a picture displayed in the absence of video signal can be stabilized.

REFERENCES:
patent: 4853765 (1989-08-01), Katsuma et al.
patent: 4855833 (1989-08-01), Kageyama et al.
patent: 5134479 (1992-07-01), Ohishi
patent: 5150200 (1992-09-01), Hong
patent: 5168362 (1992-12-01), Yoshida

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