Generic on-chip homing and resident, real-time bit exact tests
First Claim
1. A media encoding device comprising:
- a sequence detector for recognizing the occurrence of a predefined data sequence in a data stream, the sequence detector producing a detect signal upon recognition of the predefined data sequence;
a selector for passing one of at least a first data stream and a second data stream to an output stream, the selector having a control input for controlling the selection, the control input operatively coupled to the detect signal of the sequence detector; and
an encoder for converting an input data stream in a first representation to an output data stream in a second representation, the encoder having a reset input operatively coupled to the detect signal of the sequence detector.
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Abstract
Details of media encoding and decoding devices which support generic homing sequences, and methods for operating such devices are disclosed. The use of generic homing sequences may permit an embodiment of the disclosed invention to support real-time, bit-exact testing of existing and future media encoding and decoding devices. An embodiment of the present invention may permit the initialization of encoding and decoding algorithms to a known state, enabling bit-exact testing of a large group of devices using these algorithms, including those whose specifications do not support such functionality. This capability may permit the full-speed, bit-exact, testing, of both locally and remotely situated media encoders and decoders.
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Citations
16 Claims
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1. A media encoding device comprising:
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a sequence detector for recognizing the occurrence of a predefined data sequence in a data stream, the sequence detector producing a detect signal upon recognition of the predefined data sequence; a selector for passing one of at least a first data stream and a second data stream to an output stream, the selector having a control input for controlling the selection, the control input operatively coupled to the detect signal of the sequence detector; and an encoder for converting an input data stream in a first representation to an output data stream in a second representation, the encoder having a reset input operatively coupled to the detect signal of the sequence detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A media decoding device comprising:
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a sequence detector for recognizing the occurrence of a predefined data sequence in a data stream, the sequence detector producing a detect signal upon recognition of the predefined data sequence; a selector for passing one of at least a first data stream and a second data stream to an output stream, the selector having a control input for controlling the selection, the control input operatively coupled to the detect signal of the sequence detector; and a decoder for converting an input data stream in a first representation to an output data stream in a second representation, the decoder having a reset input operatively coupled to the detect signal of the sequence detector. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification