Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 27, 2007
0Patent Application Number
100228490
Date Filed
December 20, 2001
0Patent Primary Examiner
Patent 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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