Apparatus and method for hiding and extracting data using pilot code sequence
US9905234B2 · kind B2 · utility
1Cited by
4References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 23, 2016 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | Feb 23, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/018
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatuses for hiding and extracting data based on a pilot code sequence are provided. A data hiding method may include converting an input audio signal to a frequency domain, distorting phase information of the audio signal converted to the frequency domain based on a pilot code sequence representing data to be hidden, and converting the audio signal with the distorted phase information to a time domain and transmitting the audio signal converted to the time domain. The pilot code sequence may be a set of phase values corresponding to a bit value “0” or “1” of data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.