Encoding and decoding of information in audio signals
USRE42627E1 · kind E1 · reissue
56Cited by
121References
112Claims
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Key dates
| Filing date | Mar 22, 2007 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | Mar 22, 2027 |
Classification
- Technology area (CPC —)General
Abstract
Systems and methods are provided for decoding a message symbol in an audio signal. This message symbol is represented by first and second code symbols displaced in time. Values representing the code signals are accumulated and the accumulated values are examined to detect the message symbol.
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