Pulse code modulation (PCM) data-marking
US11050971B2 · kind B2 · utility
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5References
20Claims
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Key dates
| Filing date | Nov 25, 2019 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Jan 14, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/10583
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An encoding for data in an audio data stream may be indicated in the data stream using a footer stored in low-order bits of data frames in the audio data stream. When the audio data stream may include either Pulse Code Modulation (PCM) or Direct Stream Digital (DSD) data, PCM data may be marked with a footer to indicate the encoding as PCM. The footer may be a fixed value, an alternating fixed value, a predetermined sequence of values, or a value computed based on the PCM data. Examples of computed values for the footer marker may include an error code, an error correction code (ECC), and a scrambled code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.