Method and system for improving display underflow using variable HBLANK
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United States of America Patent
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Nov 17, 2015
Grant Date -
Jun 23, 2011
app pub date -
Dec 23, 2009
filing date -
Dec 23, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
Methods and apparatus for improving the effects of display underflow using a variable horizontal blanking interval are disclosed. One embodiment of the present invention is a method of display that includes detecting a data ready signal that indicates availability of display data for transmission from a display pipeline, and generating a line-transmit signal based upon a clock signal and the data ready signal. The line-transmit signal is provided to the display pipeline. The line-transmit signal is substantially coincident with the clock signal if the data ready signal is set, and may be delayed if the data ready signal is not asserted. The display pipeline transmits the display data upon receiving the line-transmit signal. Another embodiment is an apparatus including a display pipeline configured to set a data ready signal when the display data is available for transmission, and a timing generator coupled to the display pipeline and configured to generate a line-transmit signal based on the status of the data ready signal.
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