BR0206148A - Métodos de embutir um sinal hospedeiro com informações auxiliares e de decodificar informações auxiliares a partir de um sinal hospedeiro embutido, sinal codificado, suporte de armazenamento e sistemas de codificação, de decodificação, de transmissão e de receptor - Google Patents
Métodos de embutir um sinal hospedeiro com informações auxiliares e de decodificar informações auxiliares a partir de um sinal hospedeiro embutido, sinal codificado, suporte de armazenamento e sistemas de codificação, de decodificação, de transmissão e de receptorInfo
- Publication number
- BR0206148A BR0206148A BR0206148-1A BR0206148A BR0206148A BR 0206148 A BR0206148 A BR 0206148A BR 0206148 A BR0206148 A BR 0206148A BR 0206148 A BR0206148 A BR 0206148A
- Authority
- BR
- Brazil
- Prior art keywords
- signal
- auxiliary information
- encoding
- decoding
- host signal
- Prior art date
Links
Classifications
-
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00884—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
- G11B20/00891—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm embedded in audio data
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Editing Of Facsimile Originals (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Dc Digital Transmission (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Abstract
"MéTODOS DE EMBUTIR UM SINAL HOSPEDEIRO COM INFORMAçõES AUXILIARES E DE DECODIFICAR INFORMAçõES AUXILIARES A PARTIR DE UM SINAL HOSPEDEIRO EMBUTIDO, SINAL CODIFICADO, SUPORTE DE ARMAZENAMENTO E SISTEMAS DE CODIFICAçãO, DE DECODIFICAçãO, DE TRANSMISSãO E DE RECEPTOR". A invenção refere-se a métodos e correspondentes sistemas para embutir um sinal hospedeiro (1) com informações auxiliares (6) compreendendo as etapas de filtrar o sinal hospedeiro utilizando filtros apropriados (2;10) para produzir um sinal modificado e codificar as informações auxiliares dentro do sinal modificado em um codificador (5) utilizando uma técnica de correlação cruzada. De maneira a aperfeiçoar o desempenho do método de codificação com respeito ao retardo de correlação, a presente invenção utiliza os filtros apropriados para remover componentes tonais dominantes nivelando o espectro de potência de um sinal hospedeiro e/ou também remover componentes de baixa freq³ência. A remoção de componentes tonais dominantes e/ou dos componentes de baixa freq³ência anterior ao método de codificação ou decodificação aperfeiçoa o desempenho do método de codificação/ decodificação. Os componentes removidos são subseq³entemente re-introduzidos por filtração (21) e/ou adição (8) para assegurar que o sinal codificado (9) não seja perceptivelmente diferente do sinal não codificado (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01203966 | 2001-10-17 | ||
PCT/IB2002/004278 WO2003034627A1 (en) | 2001-10-17 | 2002-10-16 | System for encoding auxiliary information within a signal |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0206148A true BR0206148A (pt) | 2003-11-11 |
Family
ID=8181095
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0206148-1A BR0206148A (pt) | 2001-10-17 | 2002-10-16 | Métodos de embutir um sinal hospedeiro com informações auxiliares e de decodificar informações auxiliares a partir de um sinal hospedeiro embutido, sinal codificado, suporte de armazenamento e sistemas de codificação, de decodificação, de transmissão e de receptor |
Country Status (9)
Country | Link |
---|---|
US (1) | US20040247119A1 (pt) |
EP (1) | EP1442542B1 (pt) |
JP (1) | JP4494784B2 (pt) |
KR (1) | KR20040058203A (pt) |
CN (1) | CN100596041C (pt) |
AT (1) | ATE376293T1 (pt) |
BR (1) | BR0206148A (pt) |
DE (1) | DE60223067T2 (pt) |
WO (1) | WO2003034627A1 (pt) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101223579B (zh) * | 2005-05-26 | 2013-02-06 | Lg电子株式会社 | 用于对音频信号进行编码和解码的方法 |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4123625A (en) * | 1977-11-03 | 1978-10-31 | Northern Telecom Limited | Digital regenerator having improving noise immunity |
US4388638A (en) * | 1981-01-19 | 1983-06-14 | Rca Corporation | De-emphasis for digitized composite color television signals |
US5509089A (en) * | 1993-09-09 | 1996-04-16 | Intel Corporation | Method and system for encoding images using temporal filtering |
US5509086A (en) * | 1993-12-23 | 1996-04-16 | International Business Machines Corporation | Automatic cross color elimination |
US5450490A (en) * | 1994-03-31 | 1995-09-12 | The Arbitron Company | Apparatus and methods for including codes in audio signals and decoding |
ATE184140T1 (de) * | 1996-03-07 | 1999-09-15 | Fraunhofer Ges Forschung | Codierverfahren zur einbringung eines nicht hörbaren datensignals in ein audiosignal, decodierverfahren, codierer und decodierer |
US5940429A (en) * | 1997-02-25 | 1999-08-17 | Solana Technology Development Corporation | Cross-term compensation power adjustment of embedded auxiliary data in a primary data signal |
US5940135A (en) * | 1997-05-19 | 1999-08-17 | Aris Technologies, Inc. | Apparatus and method for encoding and decoding information in analog signals |
JPH11110913A (ja) * | 1997-10-01 | 1999-04-23 | Sony Corp | 音声情報伝送装置及び方法、並びに音声情報受信装置及び方法、並びに記録媒体 |
JP3986150B2 (ja) * | 1998-01-27 | 2007-10-03 | 興和株式会社 | 一次元データへの電子透かし |
JP2000089796A (ja) * | 1998-09-16 | 2000-03-31 | Nippon Hoso Kyokai <Nhk> | 音響信号へのデータ埋め込み装置およびデータ抽出装置 |
JP3365331B2 (ja) * | 1999-02-01 | 2003-01-08 | ヤマハ株式会社 | ベクトル量子化装置およびベクトル量子化方法 |
JP3735521B2 (ja) * | 1999-09-30 | 2006-01-18 | 株式会社東芝 | 埋め込み符号生成方法及び装置、埋め込み符号検出方法及び装置並びに電子透かし埋め込み装置 |
CN1175414C (zh) * | 1999-10-06 | 2004-11-10 | 皇家菲利浦电子有限公司 | 嵌入/检测一维信息信号中的水印的方法和装置 |
US7058570B1 (en) * | 2000-02-10 | 2006-06-06 | Matsushita Electric Industrial Co., Ltd. | Computer-implemented method and apparatus for audio data hiding |
US7020303B2 (en) * | 2000-03-18 | 2006-03-28 | Digimarc Corporation | Feature-based watermarks and watermark detection strategies |
JP3658279B2 (ja) * | 2000-05-30 | 2005-06-08 | 株式会社ミュージックゲート | 電子透かし作成方法 |
KR100611094B1 (ko) * | 2000-06-15 | 2006-08-09 | 주식회사 케이티 | 통계적 모델에 기반한 워터마크 삽입/검출 장치 및 그 방법 |
FI20001592A (fi) * | 2000-07-03 | 2002-04-11 | Elmorex Ltd Oy | Nuottipohjaisen koodin generointi |
JP3843712B2 (ja) * | 2000-08-04 | 2006-11-08 | 日本ビクター株式会社 | デジタルオーディオデータに対する情報付加方法および付加情報読み出し装置 |
US6674876B1 (en) * | 2000-09-14 | 2004-01-06 | Digimarc Corporation | Watermarking in the time-frequency domain |
US7424074B2 (en) * | 2005-04-19 | 2008-09-09 | Hitachi Global Storage Technologies Netherlands B.V. | Optimizing detector target polynomials in read/write channels to achieve best error rate performance in disk drives |
-
2002
- 2002-10-16 JP JP2003537227A patent/JP4494784B2/ja not_active Expired - Fee Related
- 2002-10-16 WO PCT/IB2002/004278 patent/WO2003034627A1/en active IP Right Grant
- 2002-10-16 US US10/492,568 patent/US20040247119A1/en not_active Abandoned
- 2002-10-16 BR BR0206148-1A patent/BR0206148A/pt not_active IP Right Cessation
- 2002-10-16 DE DE60223067T patent/DE60223067T2/de not_active Expired - Lifetime
- 2002-10-16 CN CN02820517A patent/CN100596041C/zh not_active Expired - Fee Related
- 2002-10-16 AT AT02775092T patent/ATE376293T1/de not_active IP Right Cessation
- 2002-10-16 KR KR10-2004-7005645A patent/KR20040058203A/ko not_active Application Discontinuation
- 2002-10-16 EP EP02775092A patent/EP1442542B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1442542A1 (en) | 2004-08-04 |
JP4494784B2 (ja) | 2010-06-30 |
CN100596041C (zh) | 2010-03-24 |
DE60223067D1 (de) | 2007-11-29 |
US20040247119A1 (en) | 2004-12-09 |
JP2005506570A (ja) | 2005-03-03 |
EP1442542B1 (en) | 2007-10-17 |
DE60223067T2 (de) | 2008-08-21 |
WO2003034627A1 (en) | 2003-04-24 |
ATE376293T1 (de) | 2007-11-15 |
KR20040058203A (ko) | 2004-07-03 |
CN1572072A (zh) | 2005-01-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 11A ANUIDADE. |
|
B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2258 DE 15/04/2014. |
|
B15K | Others concerning applications: alteration of classification |
Ipc: H04H 20/31 (2008.01), G11B 20/00 (2006.01) |