Television – Synchronization – Automatic phase or frequency control
Reexamination Certificate
2008-04-29
2008-04-29
Natnael, Paulos M. (Department: 2622)
Television
Synchronization
Automatic phase or frequency control
Reexamination Certificate
active
07365797
ABSTRACT:
A display synchronization signal generation apparatus and method is provided which makes it possible to display a stable image irrespective of changes in transmission speed of a received digital broadcast signal by generating a synchronization signal of an image to be displayed independently of a decoding period. A decoder suitable for the display synchronization signal generation apparatus is also provided. The decoder includes a clock signal generation unit, a pixel clock signal generation unit, and a synchronization signal generation unit. The clock signal generation unit generates a plurality of clock signals used for the decoding of the decoder based on a reference clock signal whose speed is controlled according to the transmission speed of a received broadcast signal. The pixel clock signal generation unit generates a display pixel clock signal based on a basic clock signal that is not dependent on the reference clock signal. The synchronization signal generation unit generates a horizontal synchronization signal and a vertical synchronization signal of the image to be displayed, in synchronization with the pixel clock signal generated by the pixel clock signal generation unit.
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Choi Young-Hun
Kim Byeong-Jin
Natnael Paulos M.
Samsung Electronics Co,. Ltd.
Sughrue & Mion, PLLC
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