Data processing: measuring – calibrating – or testing – Testing system – Of circuit
Reexamination Certificate
2006-07-11
2006-07-11
Hoff, Marc S. (Department: 2857)
Data processing: measuring, calibrating, or testing
Testing system
Of circuit
C702S179000, C706S016000, C706S021000, C706S050000, C703S002000, C370S506000, C370S504000
Reexamination Certificate
active
07076392
ABSTRACT:
The present invention provides a test bitstream generator and method for generating test bitstreams to test a bitstream decoder that is arranged to decode bitstreams generated in accordance with a predefined syntax. The method comprises the steps of generating test code from the syntax, the test code being arranged when executed to generate a test bitstream dependent on values assigned to a plurality of variables, each variable having a number of interesting values. The method then involves executing the test code, including the step of, for each of said variables, assigning that variable one of its interesting values, in order to thereby generate a test bitstream dependent on the interesting value assigned to each variable. It has been found that this technique provides an automated process for extensively testing a bitstream decoder.
REFERENCES:
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patent: 6400400 (2002-06-01), Isnardi et al.
patent: 6510247 (2003-01-01), Ordentlich et al.
Settle et al., Digital Bit Stream Generator for Testing MPEG Video Decoders, Jun. 10, 1996, vol. 42, pp. 422-430.
CRC, ‘MPEG-4 Video Standard, Content-Based Video Coding’, 2000 CRC press, pp. 1-26.
ARM Limited
Desta Elias
Hoff Marc S.
Nixon & Vanderhye P.C.
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