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Multipurpose processor for motion estimation, pixel processing, and general processing

  • US 6,421,698 B1
  • Filed: 11/04/1998
  • Issued: 07/16/2002
  • Est. Priority Date: 11/04/1998
  • Status: Expired due to Fees
First Claim
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1. An integrated processor comprising:

  • a processing circuit, wherein the processing circuit comprises;

    a first adder having input ports coupled to receive operands that are neighboring pixel values in an image array;

    a line buffer having an input port coupled to the adder;

    a second adder having a first input port coupled to the first adder and a second input port coupled to the line buffer; and

    a results bus coupled to write results from the second adder to either of the first memory and the second memory;

    a first memory coupled the processing circuit; and

    a second memory coupled to the processing circuit, wherein;

    the processor is operable in a first mode in which the first memory stores pixel values of a search window and the second memory stores pixel values in a reference block for which a matching block in the search window is sought; and

    the processor is operable in a second mode in which the second memory operates as a register file having storage locations identified by register numbers in instructions that the processor executes.

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