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Method and apparatus for raster calibration

  • US 5,986,697 A
  • Filed: 04/07/1997
  • Issued: 11/16/1999
  • Est. Priority Date: 01/03/1995
  • Status: Expired due to Term
First Claim
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1. Calibration circuitry configured to calibrate a local raster of a local video subsystem to a remote raster of a remote video subsystem, the remote video subsystem for providing a sync signal to the local video subsystem, the local video subsystem including a local raster clock and a remote raster clock configured to generate a remote raster clock signal, the calibration circuitry comprising:

  • processing logic configured to initialize the local raster clock with an initial clock count corresponding to a frequency of the local raster clock, the initialized local raster clock configured to be phase locked to the sync signal to thereby generate an estimate of the remote raster clock signal, wherein the estimated remote raster clock signal has an estimated remote raster clock frequency.

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