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Image decoding apparatus

  • US 7,418,146 B2
  • Filed: 02/10/2005
  • Issued: 08/26/2008
  • Est. Priority Date: 02/10/2004
  • Status: Expired due to Fees
First Claim
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1. An image decoding apparatus, including:

  • a peripheral information register which stores peripheral information on a pixel when the pixel is decoded;

    a context estimation unit which generates context information for estimating a decoding result of the pixel by reading out the peripheral information from said peripheral information register; and

    a decoding unit which decodes the pixel from the context information generated by said context estimation unit and coded data of the pixel,wherein said decoding unit decodes one pixel for each unit decoding period and at the time of termination of the each unit decoding period said decoding unit updates the peripheral information by the decoding result of the pixel that has been decoded during the unit decoding period and then writes back the updated peripheral information to said peripheral information register.

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