Overlap apparatus for digital TV

Details Overlap apparatus for digital TV Overlap apparatus for digital TV

1993-07-20

1995-03-14

Oberley, Alvin E.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348222, H04N 5262

Patent

active

053980590

ABSTRACT:
An overlap apparatus for a digital TV includes an overlap control unit for controlling the overlap operation of the apparatus by the selection of the user. An overlap processing unit gradually increases the level of an input video signal and gradually decreases the level of a feedback video signal in an overlap mode control of the overlap control unit, to generate an overlapped video signal. An overflow limiting unit limits the overflow characteristic of the output signal from the overlap processing unit. An overlap video storing unit stores the output signal from the overflow limiting unit in a normal mode control of the overlap control unit and outputs the signal stored therein as the feedback video signal to the overlap processing unit in the overlap mode control of the overlap control unit. A D/A converter converts the output signal from the overflow limiting unit into an analog signal.

REFERENCES:
patent: 5003404 (1991-03-01), Yoshimura et al.
patent: 5132798 (1992-07-01), Yoshimura

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