On-screen display apparatus

Details On-screen display apparatus On-screen display apparatus

2007-02-27

2007-02-27

Yenke, Brian P. (Department: 2622)

Television

Basic receiver with additional function

For display of additional information

C348S689000, C348S691000, C348S695000, C386S349000

Reexamination Certificate

active

10022849

ABSTRACT:
The present invention provides an on-screen display apparatus which can eliminate variations in the DC level at a time when an input chroma signal and an OSD chroma signal are switched, and prevent an erroneous display of color. The on-screen display apparatus of the present invention comprises a voltage holder which holds a voltage value at a time when the input chroma signal is a null signal, and an output switch which outputs the voltage value held by the voltage holder in an OSD period and outputs the input chroma signal other than the OSD period.

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