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Computer program product for selectively reducing bandwidth of real-time video data

  • US 6,061,403 A
  • Filed: 07/15/1999
  • Issued: 05/09/2000
  • Est. Priority Date: 06/10/1997
  • Status: Expired due to Fees
First Claim
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1. A computer program product for processing a line of video data for transmission across a bus, the line of video data being temporarily written to a buffer, the buffer being coupled to the bus for reading of data in blocks from the buffer to the bus, said computer program product comprising:

  • (a) a computer usable medium having computer readable program code means embodied in said medium for causing a selective reduction in bandwidth of the line of video data, said computer program product having;

    (i) computer readable program code means for causing said computer to detect an overflow condition within the buffer;

    (ii) computer readable program code means for causing said computer to discard data from the line of video data being temporarily written to the buffer upon detecting said overflow condition;

    (iii) computer readable program code means for causing said computer to transmit a pending block of video data from the buffer upon granting of a pending request for transmission of the pending block of video data from the buffer, said pending request being pending prior to said detecting (i), and upon beginning said transmitting, to discontinue said discarding of data from the line of video data being temporarily written to the buffer; and

    (iv) computer readable program code means for causing said computer to provide at least one next bus request for transmission of at least one next block of video data from the buffer to the bus, said at least one next block of video data comprising all remaining video data in the buffer stored therein prior to said detecting of the overflow condition.

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