CA2564981A1 - Watermark incorporation - Google Patents
Watermark incorporation Download PDFInfo
- Publication number
- CA2564981A1 CA2564981A1 CA002564981A CA2564981A CA2564981A1 CA 2564981 A1 CA2564981 A1 CA 2564981A1 CA 002564981 A CA002564981 A CA 002564981A CA 2564981 A CA2564981 A CA 2564981A CA 2564981 A1 CA2564981 A1 CA 2564981A1
- Authority
- CA
- Canada
- Prior art keywords
- spectral
- values
- sequence
- modified
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010348 incorporation Methods 0.000 title 1
- 230000003595 spectral effect Effects 0.000 claims abstract 138
- 238000000034 method Methods 0.000 claims abstract 4
- 230000004048 modification Effects 0.000 claims 5
- 238000012986 modification Methods 0.000 claims 5
- 230000003247 decreasing effect Effects 0.000 claims 4
- 238000004590 computer program Methods 0.000 claims 2
- 230000004075 alteration Effects 0.000 claims 1
- 238000004364 calculation method Methods 0.000 claims 1
- 230000007423 decrease Effects 0.000 claims 1
- 230000000873 masking effect Effects 0.000 claims 1
- 230000001131 transforming effect Effects 0.000 claims 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/018—Audio watermarking, i.e. embedding inaudible data in the audio signal
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
- G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
- H04H20/30—Arrangements for simultaneous broadcast of plural pieces of information by a single channel
- H04H20/31—Arrangements for simultaneous broadcast of plural pieces of information by a single channel using in-band signals, e.g. subsonic or cue signal
Abstract
According to an inventive scheme for introducing a watermark into an information signal, the information signal (12) is at first transferred from a time representation (22) to a spectral/modulation spectral representation (30). The information signal is then manipulated in the spectral/modulation spectral representation (30) in dependence on the watermark 114) to be introduced to obtain a modified spectral/modulation spectral representation, and subsequently an information signal provided with a watermark (16) is formed based on the modified spectral /modulation spectral representation.
An advantage is that, due to the fact that the watermark (14) is embedded and/or derived in the spectral /modulation spectral representation or range, traditional correlation attacks as are used in watermark methods based on a spread-band modulation cannot succeed easily.
An advantage is that, due to the fact that the watermark (14) is embedded and/or derived in the spectral /modulation spectral representation or range, traditional correlation attacks as are used in watermark methods based on a spread-band modulation cannot succeed easily.
Claims (25)
1. A device for introducing a watermark into an information signal, comprising:
means (18, 20, 26, 28; 18, 20, 212, 214, 28) for transferring the information signal from a time representation (22) to a spectral/modulation spectral representation (30);
means (32; 216) for modifying the information signal in the spectral/modulation spectral representation in dependence on the watermark to be introduced to obtain a modified spectral/modulation spectral representation; and means (34, 38, 40, 42; 34, 218, 40, 42) for forming an information signal provided with a watermark based on the modified spectral/modulation spectral representation.
means (18, 20, 26, 28; 18, 20, 212, 214, 28) for transferring the information signal from a time representation (22) to a spectral/modulation spectral representation (30);
means (32; 216) for modifying the information signal in the spectral/modulation spectral representation in dependence on the watermark to be introduced to obtain a modified spectral/modulation spectral representation; and means (34, 38, 40, 42; 34, 218, 40, 42) for forming an information signal provided with a watermark based on the modified spectral/modulation spectral representation.
2. The device according to claim 1, wherein the means for transferring to the spectral/modulation spectral representation comprises:
means (18, 20) for transferring the information signal to a time/spectral representation by transforming the information signal block by block; and means (26, 28; 212, 214, 28) for transferring the information signal from the time/spectral representation to the spectral/modulation spectral representation.
means (18, 20) for transferring the information signal to a time/spectral representation by transforming the information signal block by block; and means (26, 28; 212, 214, 28) for transferring the information signal from the time/spectral representation to the spectral/modulation spectral representation.
3. The device according to claim 2, wherein the means (18, 20) for transferring the information signal to a time/spectral representation is formed to divide the time/spectral representation to a plurality of spectral components to obtain a sequence of spectral values per spectral component, and the means (26, 28;
212, 214, 28) for transferring the information signal from the time/spectral representation to the spectral/modulation spectral representation comprises means (26, 28; 212, 214, 28) for, for a predetermined spectral component, spectrally dividing the sequence of spectral values block by block to obtain a part of the spectral/modulation spectral representation.
212, 214, 28) for transferring the information signal from the time/spectral representation to the spectral/modulation spectral representation comprises means (26, 28; 212, 214, 28) for, for a predetermined spectral component, spectrally dividing the sequence of spectral values block by block to obtain a part of the spectral/modulation spectral representation.
4. The device according to claim 3, wherein the means (212, 214, 28) for, for a predetermined spectral component, spectrally dividing the sequence of spectral values block by block is formed to at first multiply (212) the sequence of spectral values block by block by a complex carrier such that a magnitude of a mean slope of a phase form of the sequence of spectral values decreases to obtain demodulated blocks of spectral values, and to then spectrally divide (28) the demodulated blocks of spectral values block by block to obtain the part of the modified spectral/modulation spectral representation.
5. The device according to claim 4, wherein the means (212, 214, 28) for, for a predetermined spectral component, spectrally dividing the sequence of spectral values block by block comprises means (214) for, depending on the time/spectral representation of the information signal, varying block by block the complex carrier by which the sequence of spectral values is multiplied.
6. The device according to claim 5, wherein the means (214) for varying is formed to unwrap phases of the spectral values in the sequence of spectral values block by block for varying the complex carrier block by block to obtain a phase form, to determine a mean slope of the phase form and to determine the complex carrier based on the mean slope.
7. The device according to claim 6, wherein the means (214) for varying is further formed to determine an axis portion of the phase form from the phase form and to determine the complex carrier additionally based on the axis portion.
8. The device according to one of claims 4 to 7, wherein the means (34, 218, 40, 42) for forming the information signal provided with a watermark comprises:
means (34) for retransferring the information signal from the modified spectral/modulation spectral representation to a modified time/spectral representation to obtain modified demodulated blocks of spectral values for the predetermined spectral component; and means (218) for multiplying the modified demodulated blocks of spectral values block by block by a carrier being a complex conjugate to the complex carrier to obtain modified blocks of spectral values; and means for uniting the modified demodulated blocks of spectral values to form a modified sequence of spectral values to obtain a part of a time/spectral representation of the information signal provided with a watermark.
means (34) for retransferring the information signal from the modified spectral/modulation spectral representation to a modified time/spectral representation to obtain modified demodulated blocks of spectral values for the predetermined spectral component; and means (218) for multiplying the modified demodulated blocks of spectral values block by block by a carrier being a complex conjugate to the complex carrier to obtain modified blocks of spectral values; and means for uniting the modified demodulated blocks of spectral values to form a modified sequence of spectral values to obtain a part of a time/spectral representation of the information signal provided with a watermark.
9. The device according to claim 8, wherein the means for forming further comprises:
means for retransferring the information signal provided with a watermark from the time/spectral representation to the time representation.
means for retransferring the information signal provided with a watermark from the time/spectral representation to the time representation.
10. The device according to claim 3, wherein the means (26, 28) for, for a predetermined spectral component, spectrally dividing the sequence of spectral values block by block is formed to at first subject the sequence of spectral values to a magnitude calculation (26) to obtain a sequence of magnitudes of spectral values, and to then transform the sequence of magnitudes of spectral values block by block to the modulation spectral representation (28) to obtain the part of the spectral/modulation spectral representation.
11. The device according to claim 10, wherein the means (34, 218, 40, 42) for forming the information signal provided with a watermark comprises:
means (34) for retransferring the information signal from the modified spectral/modulation spectral representation to a modified time/spectral representation to obtain a modified sequence of spectral values for the predetermined spectral component; and means (38) for recombining the modified sequence of spectral values with phases which are based on phases of the sequence of spectral values to obtain a part of a time/spectral representation of the information signal provided with a watermark.
means (34) for retransferring the information signal from the modified spectral/modulation spectral representation to a modified time/spectral representation to obtain a modified sequence of spectral values for the predetermined spectral component; and means (38) for recombining the modified sequence of spectral values with phases which are based on phases of the sequence of spectral values to obtain a part of a time/spectral representation of the information signal provided with a watermark.
12. The device according to claim 1, wherein the means (18, 20) for transferring the information signal from the time representation to the spectral/modulation spectral representation comprises:
block forming means (18) for forming a sequence of blocks of information values from the information signal; and means (20) for spectrally dividing each of the sequence of blocks of information values to obtain a sequence of spectral value blocks, each spectral value block comprising a spectral value for each of a predetermined plurality of spectral components so that the sequence of spectral value blocks forms a sequence of spectral values per spectral component; and means (26, 28; 212, 214, 28) for spectrally dividing a predetermined sequence of the sequences to obtain a block of modulation values, wherein the means (32, 216) for modifying is formed to modify the block of modulation values in dependence on the watermark to be introduced to obtain a modified block of modulation values, and the means (34, 38, 40, 42; 34, 218, 40, 42) for forming is formed to form the information signal provided with a watermark based on the modified block of modulation values.
block forming means (18) for forming a sequence of blocks of information values from the information signal; and means (20) for spectrally dividing each of the sequence of blocks of information values to obtain a sequence of spectral value blocks, each spectral value block comprising a spectral value for each of a predetermined plurality of spectral components so that the sequence of spectral value blocks forms a sequence of spectral values per spectral component; and means (26, 28; 212, 214, 28) for spectrally dividing a predetermined sequence of the sequences to obtain a block of modulation values, wherein the means (32, 216) for modifying is formed to modify the block of modulation values in dependence on the watermark to be introduced to obtain a modified block of modulation values, and the means (34, 38, 40, 42; 34, 218, 40, 42) for forming is formed to form the information signal provided with a watermark based on the modified block of modulation values.
13. The device according to claim 12, wherein the means (34, 38, 40, 42; 34, 218, 40, 42) for forming is formed to retransfer the modified block of modulation values from the spectral division (34, 38; 34, 218) to obtain a modified sequence of spectral values, and to retransfer (40) a sequence of modified spectral blocks which is based on the modified sequence of spectral values to obtain a sequence of modified blocks of information values, and to unite (42) the modified blocks of information values to obtain the information signal provided with a watermark.
14. The device according to claims 12 or 13, wherein the block forming means (18) is formed to extract the blocks of information values from the information signal such that the blocks of information values are associated to successive time sections of the information signal overlapping one another by one half, and the means (42) for forming is formed to, when uniting, overlap the modified time blocks to one another by one half and combine aligned information values of neighboring information blocks.
15. The device according to one of claims 12 to 14, wherein the means (20) for spectrally dividing each of the sequence of blocks of information values is formed such that it provides a sequence of complex spectral values per spectral component when spectrally dividing, and the means (26, 28) for spectrally dividing the predetermined sequence of the sequences of spectral values is formed to only spectrally divide (28) the magnitudes of the complex spectral values to obtain the block of modulation values.
16. The device according to claim 15, wherein the means for forming is formed to retransfer (34) the modified block of modulation values from the spectral division to obtain a modified sequence of spectral values, to adjust (36) phases of the sequence of complex spectral values in dependence on the modification by the means for modifying to obtain a sequence of adjusted phase values, to recombine (38) the sequence of adjusted phase values with the modified sequence of spectral values to obtain a recombined modified sequence of spectral values, and to retransfer (40) a sequence of modified spectral value blocks which is based on the recombined modified sequence of spectral values to obtain the modified blocks of information values.
17. The device according to claim 12, wherein the means (20) for spectrally dividing each of the sequence of blocks of information values is formed such that it provides a sequence of complex spectral values per spectral component when spectrally dividing, and the means (212, 214, 28) for transferring the predetermined ones of the sequences of spectral values to the spectral/modulation spectral representation is formed to at first manipulate (212) the sequence of spectral values such that a phase of the spectral values of the at least one sequence of spectral values is increased or decreased by a magnitude continually increasing with the sequence or decreasing to obtain a phase-manipulated sequence of spectral values, and to then spectrally divide (28) the phase-manipulated sequence of spectral values to obtain the at least one block of modulation values, and the means for forming (34, 218, 40, 42) is formed to retransfer the modified block of modulation values from the spectral division to obtain a modified sequence of spectral values, to manipulate (218) the modified sequence of spectral values conversely to the means (212) for spectrally dividing the predetermined ones of the sequences of spectral values such that a phase of the spectral values of the at least one sequence of spectral values is increased or decreased by a magnitude continuously increasing with the sequence or decreasing to obtain a manipulated sequence of spectral values, to retransfer (40) a sequence of modified spectral blocks which is based on the modified sequence of spectral values to obtain a sequence of modified blocks of information values, and to unite (42) the modified blocks of information values to obtain the information signal provided with a watermark.
18. The device according to one of the preceding claims, wherein the means (32; 216) for modifying is adjusted to perform the modification at locations of the spectral/modulation spectral representation varying in time.
19. The device according to one of the preceding claims, wherein the means (32; 216) for modifying is adjusted to perform modification in dependence on the information signal.
20. The device according to one of the preceding claims, wherein the means (32; 216) for modifying is adjusted to perform the modification, such that, due to psycho-acoustic masking effects, the modification does not result in an audible alteration of the information signal provided with a watermark.
21. The device according to one of the preceding claims, wherein the watermark indicates author information, an identification number characterizing the information signal or a customer number.
22. A device for extracting a watermark from an information signal provided with a watermark, comprising:
means (118, 120, 126, 128; 318, 320, 414, 412, 328) for transferring the information signal provided with a watermark from a time representation to a spectral/modulation spectral representation;
means (132; 332) for deriving the watermark based on the spectral/modulation spectral representation.
means (118, 120, 126, 128; 318, 320, 414, 412, 328) for transferring the information signal provided with a watermark from a time representation to a spectral/modulation spectral representation;
means (132; 332) for deriving the watermark based on the spectral/modulation spectral representation.
23. A method for introducing a watermark into an information signal, comprising:
transferring (18, 20, 26, 28; 18, 20, 212, 214, 28) the information signal from a time representation (22) to a spectral/modulation spectral representation (30);
modifying (32; 216) the information signal in the spectral/modulation spectral representation in dependence on the watermark to be introduced to obtain a modified spectral/modulation spectral representation; and forming (34, 38, 40, 42; 34, 218, 40, 42) an information signal provided with a watermark based on the modified spectral/modulation spectral representation.
transferring (18, 20, 26, 28; 18, 20, 212, 214, 28) the information signal from a time representation (22) to a spectral/modulation spectral representation (30);
modifying (32; 216) the information signal in the spectral/modulation spectral representation in dependence on the watermark to be introduced to obtain a modified spectral/modulation spectral representation; and forming (34, 38, 40, 42; 34, 218, 40, 42) an information signal provided with a watermark based on the modified spectral/modulation spectral representation.
24. A method for extracting a watermark from an information signal provided with a watermark, comprising:
transferring (118, 120, 126, 128; 318, 320, 414, 412, 328) the information signal provided with a watermark from a time representation to a spectral/modulation spectral representation;
deriving (132; 332) the watermark based on the spectral/modulation spectral representation.
transferring (118, 120, 126, 128; 318, 320, 414, 412, 328) the information signal provided with a watermark from a time representation to a spectral/modulation spectral representation;
deriving (132; 332) the watermark based on the spectral/modulation spectral representation.
25. A computer program having a program code for performing the method according to claims 23 or 24 when the computer program runs on a computer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004021404.2 | 2004-04-30 | ||
| DE102004021404A DE102004021404B4 (en) | 2004-04-30 | 2004-04-30 | Watermark embedding |
| PCT/EP2005/002636 WO2005109702A1 (en) | 2004-04-30 | 2005-03-11 | Watermark incorporation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2564981A1 true CA2564981A1 (en) | 2005-11-17 |
| CA2564981C CA2564981C (en) | 2011-12-06 |
Family
ID=34961950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2564981A Active CA2564981C (en) | 2004-04-30 | 2005-03-11 | Watermark incorporation |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US7676336B2 (en) |
| EP (1) | EP1741215B1 (en) |
| JP (1) | JP5048478B2 (en) |
| KR (3) | KR20070015182A (en) |
| CN (1) | CN1969487B (en) |
| AU (1) | AU2005241609B2 (en) |
| BR (1) | BRPI0509819B1 (en) |
| CA (1) | CA2564981C (en) |
| DE (1) | DE102004021404B4 (en) |
| ES (1) | ES2449043T3 (en) |
| HK (1) | HK1103320A1 (en) |
| IL (1) | IL178929A (en) |
| MX (1) | MXPA06012550A (en) |
| NO (1) | NO338923B1 (en) |
| PL (1) | PL1741215T3 (en) |
| RU (1) | RU2376708C2 (en) |
| WO (1) | WO2005109702A1 (en) |
Families Citing this family (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8306811B2 (en) * | 1996-08-30 | 2012-11-06 | Digimarc Corporation | Embedding data in audio and detecting embedded data in audio |
| DE19947877C2 (en) * | 1999-10-05 | 2001-09-13 | Fraunhofer Ges Forschung | Method and device for introducing information into a data stream and method and device for encoding an audio signal |
| DE102004023436B4 (en) * | 2004-05-10 | 2006-06-14 | M2Any Gmbh | Apparatus and method for analyzing an information signal |
| WO2006129293A1 (en) * | 2005-06-03 | 2006-12-07 | Koninklijke Philips Electronics N.V. | Homomorphic encryption for secure watermarking |
| EP1764780A1 (en) * | 2005-09-16 | 2007-03-21 | Deutsche Thomson-Brandt Gmbh | Blind watermarking of audio signals by using phase modifications |
| US20090271318A1 (en) * | 2006-08-29 | 2009-10-29 | Benjamin Filmalter Grobler | Digital data licensing system |
| EP2015293A1 (en) * | 2007-06-14 | 2009-01-14 | Deutsche Thomson OHG | Method and apparatus for encoding and decoding an audio signal using adaptively switched temporal resolution in the spectral domain |
| US8099285B2 (en) * | 2007-12-13 | 2012-01-17 | Dts, Inc. | Temporally accurate watermarking system and method of operation |
| US20090265366A1 (en) * | 2008-04-22 | 2009-10-22 | Qualcomm Incorporated | Opportunistic opinion score collection on a mobile device |
| CN101271690B (en) * | 2008-05-09 | 2010-12-22 | 中国人民解放军重庆通信学院 | Audio spread-spectrum watermark processing method for protecting audio data |
| JP5338170B2 (en) * | 2008-07-18 | 2013-11-13 | ヤマハ株式会社 | Apparatus, method and program for embedding and extracting digital watermark information |
| US9002487B2 (en) * | 2008-08-14 | 2015-04-07 | Sk Telecom Co., Ltd. | System and method for data reception and transmission in audible frequency band |
| JP2011145541A (en) | 2010-01-15 | 2011-07-28 | Yamaha Corp | Reproduction device, musical sound signal output device, reproduction system and program |
| EP2362387A1 (en) * | 2010-02-26 | 2011-08-31 | Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. | Watermark generator, watermark decoder, method for providing a watermark signal in dependence on binary message data, method for providing binary message data in dependence on a watermarked signal and computer program using a differential encoding |
| EP2362386A1 (en) * | 2010-02-26 | 2011-08-31 | Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. | Watermark generator, watermark decoder, method for providing a watermark signal in dependence on binary message data, method for providing binary message data in dependence on a watermarked signal and computer program using a two-dimensional bit spreading |
| EP2362382A1 (en) * | 2010-02-26 | 2011-08-31 | Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. | Watermark signal provider and method for providing a watermark signal |
| JP5459069B2 (en) * | 2010-05-24 | 2014-04-02 | ヤマハ株式会社 | Apparatus for removing digital watermark information embedded in audio signal, and apparatus for embedding digital watermark information in audio signal |
| EP2431970A1 (en) * | 2010-09-21 | 2012-03-21 | Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. | Watermark generator, watermark decoder, method for providing a watermarked signal based on discrete valued data and method for providing discrete valued data in dependence on a watermarked signal |
| EP2565667A1 (en) * | 2011-08-31 | 2013-03-06 | Friedrich-Alexander-Universität Erlangen-Nürnberg | Direction of arrival estimation using watermarked audio signals and microphone arrays |
| TWI457852B (en) * | 2011-11-22 | 2014-10-21 | Univ Nat Taiwan Normal | The watermarking method of altering document's content after duplication |
| US9305559B2 (en) | 2012-10-15 | 2016-04-05 | Digimarc Corporation | Audio watermark encoding with reversing polarity and pairwise embedding |
| US9401153B2 (en) | 2012-10-15 | 2016-07-26 | Digimarc Corporation | Multi-mode audio recognition and auxiliary data encoding and decoding |
| US9380383B2 (en) * | 2013-09-06 | 2016-06-28 | Gracenote, Inc. | Modifying playback of content using pre-processed profile information |
| US9990928B2 (en) * | 2014-05-01 | 2018-06-05 | Digital Voice Systems, Inc. | Audio watermarking via phase modification |
| EP2963645A1 (en) * | 2014-07-01 | 2016-01-06 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Calculator and method for determining phase correction data for an audio signal |
| US10262118B2 (en) * | 2015-01-06 | 2019-04-16 | Robert Antonius Adrianus Van Overbruggen | Systems and methods for authenticating digital content |
| WO2016115483A2 (en) * | 2015-01-15 | 2016-07-21 | Hardwick John C | Audio watermarking via phase modification |
| CN109983781B (en) * | 2016-10-27 | 2022-03-22 | 日商艾菲克泽股份有限公司 | Content playback apparatus and computer-readable storage medium |
| CN107375810A (en) * | 2017-08-03 | 2017-11-24 | 广河县盛和中医医院 | A kind of composition of Zhuan Zhi andrologies impotence and premature ejaculation |
| CN109166570B (en) * | 2018-07-24 | 2019-11-26 | 百度在线网络技术（北京）有限公司 | A kind of method, apparatus of phonetic segmentation, equipment and computer storage medium |
| US11244692B2 (en) | 2018-10-04 | 2022-02-08 | Digital Voice Systems, Inc. | Audio watermarking via correlation modification using an amplitude and a magnitude modification based on watermark data and to reduce distortion |
| CN111341329B (en) * | 2020-02-04 | 2022-01-21 | 北京达佳互联信息技术有限公司 | Watermark information adding method, watermark information extracting device, watermark information adding equipment and watermark information extracting medium |
Family Cites Families (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0519782A (en) * | 1991-05-02 | 1993-01-29 | Ricoh Co Ltd | Voice feature extraction device |
| US5173923A (en) * | 1991-11-22 | 1992-12-22 | Bell Communications Research, Inc. | Spread-time code division multiple access technique with arbitrary spectral shaping |
| US5321497A (en) * | 1992-03-09 | 1994-06-14 | Wyko Corporation | Interferometric integration technique and apparatus to confine 2π discontinuity |
| US5671168A (en) | 1995-07-06 | 1997-09-23 | Technion Research & Development Foundation Ltd. | Digital frequency-domain implementation of arrays |
| EP0766468B1 (en) | 1995-09-28 | 2006-05-03 | Nec Corporation | Method and system for inserting a spread spectrum watermark into multimedia data |
| US6584138B1 (en) | 1996-03-07 | 2003-06-24 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Coding process for inserting an inaudible data signal into an audio signal, decoding process, coder and decoder |
| DE19640814C2 (en) * | 1996-03-07 | 1998-07-23 | Fraunhofer Ges Forschung | Coding method for introducing an inaudible data signal into an audio signal and method for decoding a data signal contained inaudibly in an audio signal |
| US5724270A (en) | 1996-08-26 | 1998-03-03 | He Holdings, Inc. | Wave-number-frequency adaptive beamforming |
| US5915027A (en) * | 1996-11-05 | 1999-06-22 | Nec Research Institute | Digital watermarking |
| BR9812908B1 (en) | 1997-10-08 | 2009-08-11 | method for copy-protecting a digital video signal; method of reproducing a protected video signal; digital video recorder adapted for a once copy protocol for a video signal; coding apparatus for protecting a video signal; method for enabling copying of a protected video signal; apparatus for enabling copying of a protected video signal and method of processing an original video signal to limit its copying. | |
| US6330672B1 (en) * | 1997-12-03 | 2001-12-11 | At&T Corp. | Method and apparatus for watermarking digital bitstreams |
| TW440819B (en) * | 1998-03-18 | 2001-06-16 | Koninkl Philips Electronics Nv | Copy protection schemes for copy protected digital material |
| US6064764A (en) | 1998-03-30 | 2000-05-16 | Seiko Epson Corporation | Fragile watermarks for detecting tampering in images |
| BR9910620A (en) | 1998-05-20 | 2001-01-30 | Macrovision Corp | Watermark detection process and apparatus for specific scales and arbitrary displacements |
| US6073153A (en) * | 1998-06-03 | 2000-06-06 | Microsoft Corporation | Fast system and method for computing modulated lapped transforms |
| US6725371B1 (en) * | 1999-06-30 | 2004-04-20 | Intel Corporation | Secure packet processor |
| CN1327585A (en) * | 1999-07-02 | 2001-12-19 | 皇家菲利浦电子有限公司 | Addition of watermark keys according to a flexible format |
| DE19947877C2 (en) | 1999-10-05 | 2001-09-13 | Fraunhofer Ges Forschung | Method and device for introducing information into a data stream and method and device for encoding an audio signal |
| US6725372B1 (en) | 1999-12-02 | 2004-04-20 | Verizon Laboratories Inc. | Digital watermarking |
| JP3507743B2 (en) * | 1999-12-22 | 2004-03-15 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Digital watermarking method and system for compressed audio data |
| AU2001231109A1 (en) | 2000-01-24 | 2001-07-31 | Businger, Peter A. | Transform domain allocation for multimedia watermarking |
| JP3659321B2 (en) * | 2000-06-29 | 2005-06-15 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Digital watermarking method and system |
| DE60110086T2 (en) * | 2000-07-27 | 2006-04-06 | Activated Content Corp., Inc., Burlingame | STEGOTEXT CODIER AND DECODER |
| CN100431355C (en) * | 2000-08-16 | 2008-11-05 | 多尔拜实验特许公司 | Modulating one or more parameters of an audio or video perceptual coding system in response to supplemental information |
| US20020168082A1 (en) * | 2001-03-07 | 2002-11-14 | Ravi Razdan | Real-time, distributed, transactional, hybrid watermarking method to provide trace-ability and copyright protection of digital content in peer-to-peer networks |
| US7136418B2 (en) * | 2001-05-03 | 2006-11-14 | University Of Washington | Scalable and perceptually ranked signal coding and decoding |
| US7006452B2 (en) | 2001-05-22 | 2006-02-28 | Intel Corporation | Matching DSL data link layer protocol detection |
| DE10129239C1 (en) * | 2001-06-18 | 2002-10-31 | Fraunhofer Ges Forschung | Audio signal water-marking method processes water-mark signal before embedding in audio signal so that it is not audibly perceived |
| JP2003044067A (en) * | 2001-08-03 | 2003-02-14 | Univ Tohoku | Device for embedding/detecting digital data by cyclic deviation of phase |
| US6963842B2 (en) * | 2001-09-05 | 2005-11-08 | Creative Technology Ltd. | Efficient system and method for converting between different transform-domain signal representations |
| FR2834363B1 (en) * | 2001-12-27 | 2004-02-27 | France Telecom | METHOD FOR CHARACTERIZING A SOUND SIGNAL |
| US7243060B2 (en) | 2002-04-02 | 2007-07-10 | University Of Washington | Single channel sound separation |
| WO2003096337A2 (en) | 2002-05-10 | 2003-11-20 | Koninklijke Philips Electronics N.V. | Watermark embedding and retrieval |
| US7254500B2 (en) | 2003-03-31 | 2007-08-07 | The Salk Institute For Biological Studies | Monitoring and representing complex signals |
-
2004
- 2004-04-30 DE DE102004021404A patent/DE102004021404B4/en not_active Expired - Fee Related
-
2005
- 2005-03-11 MX MXPA06012550A patent/MXPA06012550A/en active IP Right Grant
- 2005-03-11 BR BRPI0509819-0A patent/BRPI0509819B1/en active IP Right Grant
- 2005-03-11 WO PCT/EP2005/002636 patent/WO2005109702A1/en active Application Filing
- 2005-03-11 EP EP05715993.1A patent/EP1741215B1/en active Active
- 2005-03-11 CN CN2005800196764A patent/CN1969487B/en active Active
- 2005-03-11 KR KR1020067022604A patent/KR20070015182A/en not_active IP Right Cessation
- 2005-03-11 JP JP2007509900A patent/JP5048478B2/en active Active
- 2005-03-11 KR KR1020087020078A patent/KR20080081098A/en not_active Application Discontinuation
- 2005-03-11 CA CA2564981A patent/CA2564981C/en active Active
- 2005-03-11 ES ES05715993.1T patent/ES2449043T3/en active Active
- 2005-03-11 RU RU2006142304/09A patent/RU2376708C2/en active
- 2005-03-11 KR KR1020087024550A patent/KR100902910B1/en active IP Right Grant
- 2005-03-11 AU AU2005241609A patent/AU2005241609B2/en active Active
- 2005-03-11 PL PL05715993T patent/PL1741215T3/en unknown
-
2006
- 2006-10-29 IL IL178929A patent/IL178929A/en active IP Right Grant
- 2006-10-30 US US11/554,492 patent/US7676336B2/en active Active
- 2006-11-24 NO NO20065424A patent/NO338923B1/en unknown
-
2007
- 2007-07-06 HK HK07107275.4A patent/HK1103320A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| KR20080094851A (en) | 2008-10-24 |
| DE102004021404A1 (en) | 2005-11-24 |
| US7676336B2 (en) | 2010-03-09 |
| JP2007535699A (en) | 2007-12-06 |
| AU2005241609A1 (en) | 2005-11-17 |
| NO20065424L (en) | 2007-01-31 |
| CN1969487B (en) | 2011-08-17 |
| PL1741215T3 (en) | 2014-05-30 |
| EP1741215A1 (en) | 2007-01-10 |
| RU2006142304A (en) | 2008-06-10 |
| IL178929A (en) | 2011-03-31 |
| CN1969487A (en) | 2007-05-23 |
| EP1741215B1 (en) | 2013-12-25 |
| WO2005109702A1 (en) | 2005-11-17 |
| RU2376708C2 (en) | 2009-12-20 |
| KR20080081098A (en) | 2008-09-05 |
| DE102004021404B4 (en) | 2007-05-10 |
| ES2449043T3 (en) | 2014-03-18 |
| KR20070015182A (en) | 2007-02-01 |
| US20080027729A1 (en) | 2008-01-31 |
| AU2005241609B2 (en) | 2008-01-10 |
| BRPI0509819A (en) | 2007-09-18 |
| HK1103320A1 (en) | 2007-12-14 |
| MXPA06012550A (en) | 2006-12-15 |
| CA2564981C (en) | 2011-12-06 |
| JP5048478B2 (en) | 2012-10-17 |
| IL178929A0 (en) | 2007-03-08 |
| BRPI0509819B1 (en) | 2023-10-03 |
| NO338923B1 (en) | 2016-10-31 |
| KR100902910B1 (en) | 2009-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2564981A1 (en) | Watermark incorporation | |
| KR100333163B1 (en) | Digital watermarking method and apparatus | |
| WO2004075078A3 (en) | Method and apparatus for fundamental operations on token sequences: computing similarity, extracting term values, and searching efficiently | |
| CA2564970A1 (en) | Information signal processing by carrying out modification in the spectral/modulation spectral region representation | |
| WO2002037316A3 (en) | Method and apparatus for creating a unique audio signature | |
| RU2004137460A (en) | SYSTEM AND METHOD FOR USING DESINCHRONIZED IDENTIFICATION INFORMATION OF DIGITAL MULTIMEDIA DATA | |
| JP4343179B2 (en) | Digital watermark detection method and apparatus | |
| EP1560120A4 (en) | Access method | |
| WO2003028004A3 (en) | Method and system for extracting melodic patterns in a musical piece | |
| WO2002011425A3 (en) | Indigenous authentication for sensor-recorders and other information capture devices | |
| WO2002016606A3 (en) | Method for massive directed mutagenesis | |
| WO2002007088A3 (en) | Apparatus and method for diffuse and specular lighting of voxel data | |
| Bacchuwar et al. | A jump patch-block match algorithm for multiple forgery detection | |
| WO2004042522A3 (en) | Digital-rights management | |
| WO2005038573A3 (en) | Authentication system | |
| WO2005104474A8 (en) | Device and method for improving signal-to-noise ratio using complementary sequences | |
| Budiman et al. | QIM-based audio watermarking with combined techniques of SWT-DST-QR-CPT using SS-based synchronization | |
| CN101266794A (en) | Multiple watermark inlay and exaction method based on echo hiding | |
| WO2006052935A3 (en) | Method and apparatus for conditionally obfuscating bus communications | |
| WO2004097455A3 (en) | Method for treating seismic cubes corresponding to acquisitions obtained for a common zone at different times | |
| Baranwal et al. | Comparative study of spread spectrum based audio watermarking techniques | |
| US8135955B2 (en) | Device and method for detecting a manipulation of an information signal | |
| CN103778592B (en) | A kind of double; two coloured image blind watermark methods based on system complementary | |
| WO2001031434A3 (en) | Method for detecting the time sequences of a fundamental frequency of an audio-response unit to be synthesised | |
| Boeuf et al. | An analysis of one of the SDMI candidates |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |