Apparatus for improving picture quality of a box display of tele

Details Apparatus for improving picture quality of a box display of tele Apparatus for improving picture quality of a box display of tele

1995-01-13

1997-12-09

Peng, John K.

Television

Nonpictorial data packet in television format

Including teletext decoder or display

348563, 348589, 348678, H04N 557

Patent

active

056965613

ABSTRACT:
An apparatus with a built-in teletext broadcasting decoder including a contrast adjusting circuit. When a box display of character data by teletext broadcasting is specified, the contrast adjusting circuit operates to lower the contrast of the screen in which the box display is made, thereby to prevent the box display from being deformed.

REFERENCES:
patent: 4549217 (1985-10-01), Sendelweck
patent: 5345278 (1994-09-01), Choi

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