Carrying auxiliary data within audio signals
US8380334B2 · kind B2 · utility
0Cited by
7References
20Claims
0Family size
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Key dates
| Filing date | Sep 7, 2010 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | May 20, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for inserting auxiliary data into an audio channel that carries an audio signal includes a modulator configured to convert an auxiliary data signal into a modulated auxiliary data signal that has a passband within the audio channel's passband. The system for inserting auxiliary data into an audio channel that carries an audio signal further includes summing means configured to combine the modulated auxiliary data signal and the audio signal into a combination signal to be carried in the audio channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.