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Block-based negative filtering of MPEG-2 compliant table sections

  • US 7,028,095 B1
  • Filed: 03/23/2000
  • Issued: 04/11/2006
  • Est. Priority Date: 03/23/2000
  • Status: Expired due to Fees
First Claim
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1. A method of filtering a datastream containing transport table sections, said method comprising steps ofdetermining presence of transport table sections in a payload portion of a packet of said datastream from a table identification (TID) field in a header of said packet,filtering a portion of said transport table sections in accordance with a mask which defines a filter function and a logic state of a not match bit to provide a compare result,selecting a next mask and a portion of said transport table sections in accordance with a filter ID, andcombining compare result values in accordance with a logic values of not match bits in a not match indication register,whereby an arbitrary length of said transport table sections are filtered by an arbitrary number of filters having arbitrary filter functions.

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