KR100746771B1 - 휴대용 오디오 기기에서의 오디오 파일 재생방법 - Google Patents
휴대용 오디오 기기에서의 오디오 파일 재생방법 Download PDFInfo
- Publication number
- KR100746771B1 KR100746771B1 KR1020010021909A KR20010021909A KR100746771B1 KR 100746771 B1 KR100746771 B1 KR 100746771B1 KR 1020010021909 A KR1020010021909 A KR 1020010021909A KR 20010021909 A KR20010021909 A KR 20010021909A KR 100746771 B1 KR100746771 B1 KR 100746771B1
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- audio file
- information
- audio
- reproduction
- encrypted
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000012790 confirmation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
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Classifications
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- 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
- G11B20/10—Digital recording or reproducing
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
- G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
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- 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
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- 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
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
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- 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
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00246—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is obtained from a local device, e.g. device key initially stored by the player or by the recorder
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- 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
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
- G11B20/00333—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored in header data, e.g. in sector headers
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- 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
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00478—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier wherein contents are decrypted and re-encrypted with a different key when being copied from/to a record carrier
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/233—Processing of audio elementary streams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
- H04N21/23476—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption by partially encrypting, e.g. encrypting the ending portion of a movie
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
- H04N21/44055—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption by partially decrypting, e.g. decrypting a video stream that has been partially encrypted
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- 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
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
- G11B2020/10537—Audio or video recording
- G11B2020/10546—Audio or video recording specifically adapted for audio data
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Reverberation, Karaoke And Other Acoustics (AREA)
- Storage Device Security (AREA)
Abstract
Description
Claims (4)
- 재생 요청된 오디오 파일의 헤더 정보 내에, 암호화되지 않은 상태로 기록된 암호화 정보와 재생 제어정보를 각각 독출하는 1단계;상기 암호화 정보를 이용하여, 상기 오디오 파일 내에 암호화 기록된 오디오 데이터를 해독하되, 상기 재생 제어정보에 근거하여, 상기 오디오 파일의 재생 여부를 결정하는 2단계; 및상기 오디오 파일의 재생 결정시, 상기 해독되는 오디오 데이터를 재생하되, 상기 재생 제어정보에 근거하여, 상기 재생되는 오디오 데이터의 음악 장르에 상응하는 이퀄라이저 동작을 선택적으로 수행하는 3단계를 포함하여 이루어지는 것을 특징으로 하는 휴대용 오디오 기기에서의 오디오 파일 재생방법.
- 제 1항에 있어서,상기 재생 제어정보는, 상기 오디오 파일에 대한 재생허용 식별정보, 재생허용 회수정보, 자동 이퀄라이저 설정 식별정보, 그리고 음악 장르정보로서, 상기 오디오 파일의 헤더 정보 내에 암호화되지 않은 상태로 기록되는 것을 특징으로 하는 휴대용 오디오 기기에서의 오디오 파일 재생방법.
- 제 2항에 있어서,상기 2단계는, 상기 재생 제어정보 내에 포함된 재생허용 식별정보와 재생허용 회수정보에 근거하여, 상기 오디오 파일의 재생 여부를 결정하되, 재생 불가 결정시, 그 사실을 안내 표시하는 것을 특징으로 하는 휴대용 오디오 기기에서의 오디오 파일 재생방법.
- 제 2항에 있어서,상기 3단계는, 상기 재생 제어정보 내에 포함된 자동 이퀄라이저 식별정보와 음악 장르정보에 근거하여, 음악 장르별 이퀄라이저 동작을 선택적으로 수행하는 것을 특징으로 하는 휴대용 오디오 기기에서의 오디오 파일 재생방법.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020010021909A KR100746771B1 (ko) | 2001-04-24 | 2001-04-24 | 휴대용 오디오 기기에서의 오디오 파일 재생방법 |
US10/127,596 US7124444B2 (en) | 2001-04-24 | 2002-04-23 | Method of converting audio data for a portable device and reproducing the converted audio data |
CNB021181853A CN1201224C (zh) | 2001-04-24 | 2002-04-24 | 便携设备音频数据的转换及再现方法 |
US12/252,691 USRE42813E1 (en) | 2001-04-24 | 2008-10-16 | Method of converting audio data for a portable device and reproducing the converted audio data |
US12/494,253 USRE42399E1 (en) | 2001-04-24 | 2009-06-29 | Method of converting audio data for a portable device and reproducing the converted audio data |
US12/494,250 USRE43530E1 (en) | 2001-04-24 | 2009-06-29 | Method of converting audio data for a portable device and reproducing the converted audio data |
US12/494,255 USRE43439E1 (en) | 2001-04-24 | 2009-06-29 | Method of converting audio data for a portable device and reproducing the converted audio data |
US12/875,827 USRE43554E1 (en) | 2001-04-24 | 2010-09-03 | Method of converting audio data for a portable device and reproducing the converted audio data |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020010021909A KR100746771B1 (ko) | 2001-04-24 | 2001-04-24 | 휴대용 오디오 기기에서의 오디오 파일 재생방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20020082512A KR20020082512A (ko) | 2002-10-31 |
KR100746771B1 true KR100746771B1 (ko) | 2007-08-06 |
Family
ID=19708614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020010021909A KR100746771B1 (ko) | 2001-04-24 | 2001-04-24 | 휴대용 오디오 기기에서의 오디오 파일 재생방법 |
Country Status (3)
Country | Link |
---|---|
US (6) | US7124444B2 (ko) |
KR (1) | KR100746771B1 (ko) |
CN (1) | CN1201224C (ko) |
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KR100516504B1 (ko) * | 2003-09-30 | 2005-09-26 | (주)잉카엔트웍스 | 네트워크를 통하여 개인 휴대 단말기와 데이터 동기화를수행하기 위한 방법 및 그 시스템 |
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KR20060004053A (ko) * | 2004-07-08 | 2006-01-12 | 삼성전자주식회사 | 오디오 파일의 재생모드 변경 장치 및 방법 |
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JP4892900B2 (ja) * | 2005-09-13 | 2012-03-07 | ソニー株式会社 | 情報処理装置、情報記録媒体製造装置、情報記録媒体、および方法、並びにコンピュータ・プログラム |
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KR100677622B1 (ko) * | 2005-12-02 | 2007-02-02 | 삼성전자주식회사 | 오디오 파일의 이퀄라이저 설정 방법 및 이를 이용한오디오 파일 재생 방법 |
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KR102229603B1 (ko) | 2014-09-17 | 2021-03-18 | 삼성전자주식회사 | 오디오 데이터 운용 방법과 이를 지원하는 전자 장치 |
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2001
- 2001-04-24 KR KR1020010021909A patent/KR100746771B1/ko active IP Right Grant
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2002
- 2002-04-23 US US10/127,596 patent/US7124444B2/en not_active Ceased
- 2002-04-24 CN CNB021181853A patent/CN1201224C/zh not_active Expired - Fee Related
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2008
- 2008-10-16 US US12/252,691 patent/USRE42813E1/en active Active
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2009
- 2009-06-29 US US12/494,253 patent/USRE42399E1/en active Active
- 2009-06-29 US US12/494,255 patent/USRE43439E1/en active Active
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JPH02287970A (ja) * | 1989-04-28 | 1990-11-28 | Hitachi Maxell Ltd | 光記録装置 |
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JPH09171664A (ja) * | 1995-12-20 | 1997-06-30 | Sharp Corp | 音楽情報再生装置及び音楽情報記録再生装置 |
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Also Published As
Publication number | Publication date |
---|---|
USRE42813E1 (en) | 2011-10-04 |
USRE42399E1 (en) | 2011-05-24 |
CN1383056A (zh) | 2002-12-04 |
USRE43439E1 (en) | 2012-05-29 |
USRE43554E1 (en) | 2012-07-24 |
CN1201224C (zh) | 2005-05-11 |
USRE43530E1 (en) | 2012-07-17 |
US20020154775A1 (en) | 2002-10-24 |
US7124444B2 (en) | 2006-10-17 |
KR20020082512A (ko) | 2002-10-31 |
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