Method and apparatus for pat 2 bus decoding
AssigneesSony Corporation, Sony Trans Com Inc.
InventorsCalvin Fang, Clayton Backhaus, Graham Harding, Kazuo Takata
Life of this patent
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Abstract
A system for testing a bus is described. The system utilizes a tester which includes decompression circuitry to decompress digitized ADPCM signals transferred over a bus, data in the decompressed ADPCM signal is used to determine whether data losses or transmission errors are occurring on the bus. When such errors occur, the tester transmits a warning signal.
Claims20
An apparatus for testing a bus transferring a plurality of channels of audio data in an in flight entertainment system, the apparatus comprising:
- a channel data extractor to retrieve digital audio data corresponding to a selected channel in the plurality of channels;
- a decompression engine to determine when the retrieved digital audio data includes errors;
- and
- an indicator to indicate when the decompression engine determines that the retrieved digital audio data includes errors.
A method for determining the location of errors in a bus transferring a plurality of channels of adaptive differential pulse code modulation (ADPCM) audio data comprising:
- retrieving ADPCM digital audio data corresponding to preselected channels from a bus;
- determining whether the retrieved ADPCM digital audio data includes data errors;
- and
- indicating when data errors are detected.
An apparatus for testing a bus transferring a plurality of channels of adaptive differential pulse code modulation (ADPCM) audio data, the apparatus comprising:
- a channel data extractor to retrieve digital ADPCM audio data corresponding to a selected channel in the plurality of channels;
- a decompression engine to determine when the retrieved digital ADPCM audio data includes errors;
- and
- an indicator to indicate when the decompression engine determines that the retrieved digital ADPCM audio data includes errors.
Dependencies are inferred from the claim text.