Device and method for displaying video
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...
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| Main Author | |
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| Format | Patent |
| Language | English |
| Published |
09.08.2005
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| Online Access | Get full text |
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| Summary: | 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 generator , a line memory writes the on-screen signal outputted from an OSD generator on a clock (CK) lower in speed than the dot clock of the video signal, and reads the same on a clock (CK) synchronized with the dot clock of the video signal. A switching part inserts the on-screen signal synchronized with the dot clock of the video signal outputted from the line memory into a predetermined period of the video signal by selectively switching outputs. |
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