On-screen display circuit of imaging system

Details On-screen display circuit of imaging system On-screen display circuit of imaging system

1994-10-19

1995-12-12

Harvey, David E.

Television

Basic receiver with additional function

For display of additional information

348589, H04N 5272

Patent

active

054754437

ABSTRACT:
An on-screen display (OSD) circuit suitable to be adapted in an imaging system is disclosed. The OSD circuit has a first and a second adders. The first adder produces a second OSD data signal by adding vertical edge compensation signal and a level-modified OSD data signal. The second adder produces a third OSD signal by adding the second OSD data signal, horizontal edge compensation signal and a blank luminance signal. The third OSD signal is inputted to a display device. This OSD circuit has a simple configuration to thereby reduce its manufacturing cost.

REFERENCES:
patent: 3602646 (1971-08-01), Goldberg
patent: 4338624 (1982-07-01), d'Hautecourt et al.

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