FIELD: information technologies.
SUBSTANCE: method to detect and use sampling frequency for decoding of water sign information built into a received signal sampled with the initial sampling frequency at the coder's side, besides, the specified decoding includes correlation with at least one reference sample, in which in the searching mode: possible sampling frequencies are repeatedly scanned in the frequency range thus decoding the water sign; the maximum and the second maximum are determined among summary validity values; besides, as soon as their ratio or their difference becomes higher than the second threshold value, or when the maximum number of scanning cycles is achieved, the specified searching mode is terminated, and the specified normal mode is launched, where the selected possible sampling frequency is accepted as the initial sampling frequency, and the water sign of the received signal is decoded part by part or frame by frame sing the selected possible sampling frequency.
EFFECT: correct detection of a sampling frequency for decoding of water sign information built into a received distorted signal.
18 cl, 2 dwg
| Title |
Year |
Author |
Number |
| METHOD AND APPARATUS FOR DETERMINING PRESENCE OF REFERENCE PATTERN IN RECEIVED SIGNAL, POSSIBLY WATERMARKED |
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|
RU2482553C2 |
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2003 |
|
RU2331933C2 |
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2011 |
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- Del Galdo Giovanni
- Breiling Marco
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- Borsum Juliane
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|
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2014 |
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- U Fen
|
RU2653295C2 |
| DEVICE AND METHOD FOR ENCODING/DECODING FOR HIGH-FREQUENCY BAND EXTENSION |
2011 |
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|
RU2575680C2 |
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2011 |
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- Pickel Jorg
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- Del Galdo Giovanni
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|
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| WATERMARK SIGNAL GENERATION AND EMBEDDING WATERMARK |
2011 |
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- Kraegeloh Stefan
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|
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2011 |
- Zitzmann Reinhard
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- Breiling Marco
- Borsum Julian
- Wabnik Stefan
- Pickel Jorg
- Greevenbosch Bert
- Grill Bernhard
- Eberlein Ernst
- Del Galdo Giovanni
- Krageloh Stefan
|
RU2666647C2 |
| WATERMARK DECODER AND METHOD OF GENERATING BINARY MESSAGE DATA |
2011 |
- Wabnik Stefan
- Pickel Joerg
- Greevenbosch Bert
- Grill Bernhard
- Eberlein Ernst
- Del Galdo Giovanni
- Kraegeloh Stefan
- Zitzmann Reinhard
- Bliem Tobias
- Breiling Marco
- Borsum Juliane
|
RU2586845C2 |
| DEVICE AND METHOD FOR ENCODING/DECODING FOR EXPANSION OF HIGH FREQUENCY RANGE |
2017 |
- Choo, Ki-Hyun
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|
RU2672133C1 |
