Method of detecting internal frame skips by MPEG video decoders
AssigneeLSI Logic Corporation
InventorsBrett J. Grandbois, Gareth D. Trevers
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Abstract
An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to (i) generate a random number signal, (ii) read a data signal, and (iii) generate one or more control signals. The second circuit may be configured to (i) store the random number signal, (ii) receive and store a decoded video signal, and (iii) present the data signal. The first circuit may be further configured to compare the data signal with the random number signal and (i) when the data signal matches the random number signal generate a first of the control signals and (ii) when the data signal fails to match the random number signal generate a second of the control signals.
Claims20
An apparatus comprising:
- a first circuit configured to (i) generate a random number signal, (ii) read a data signal, and (iii) generate one or more control signals;
- and
- a second circuit configured to (i) store said random number signal, (ii) receive and store a decoded video signal, and (iii) present said data signal, wherein said first circuit is further configured to compare said data signal with said random number signal and (i) when said data signal matches said random number signal generate a first of said control signals and (ii) when said data signal fails to match said random number signal generate a second of said control signals.
An apparatus comprising:
- means for generating a random number signal and writing said random number signal to one or more memory circuit locations;
- means for receiving and storing a decoded video signal;
- means for reading a data signal from said memory circuit locations;
- and
- means for comparing said random number signal with said data signal and (i) when said data signal matches said random number signal, generating a first control signal that indicates a video frame skip has occurred and (ii) when said data signal does not match said random number signal, generating a second control signal that indicates a video frame skip has not occurred.
A method for detecting video frame decoding skip comprising the steps of:
- (A) generating a random number signal and writing said random number signal to one or more memory circuit locations;
- (B) receiving and storing a decoded video signal;
- (C) reading a data signal from said memory circuit locations;
- and
- (D) comparing said random number signal with said data signal and (i) when said data signal matches said random number signal, generating a first control signal and (ii) when said data signal does not match said random number signal, generating a second control signal.
Dependencies are inferred from the claim text.