Device and method for displaying video

Details Device and method for displaying video Device and method for displaying video

2005-08-09

2005-08-09

Rao, Andy (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240250

Reexamination Certificate

active

06928118

ABSTRACT:
A video display apparatus and method capable of providing, even if an on-screen display device that operates only on a clock lower in speed than a dot clock synchronized with a video signal is used, high-definition on-screen display based on the dot clock. Based on a signal outputted from a control signal generator1, a line memory3writes the on-screen signal outputted from an OSD generator2on a clock (CK2) lower in speed than the dot clock of the video signal, and reads the same on a clock (CK1) synchronized with the dot clock of the video signal. A switching part4inserts the on-screen signal synchronized with the dot clock of the video signal outputted from the line memory3into a predetermined period of the video signal by selectively switching outputs.

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