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17. WO2014125285 - VERSATILE MUSIC DISTRIBUTION

Publication Number WO/2014/125285
Publication Date 21.08.2014
International Application No. PCT/GB2014/050423
International Filing Date 13.02.2014
IPC
G10L 19/16 2013.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signal 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
04using predictive techniques
16Vocoder architecture
G10L 19/24 2013.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signal 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
04using predictive techniques
16Vocoder architecture
18Vocoders using multiple modes
24Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
G10L 19/018 2013.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signal 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
018Audio watermarking, i.e. embedding inaudible data in the audio signal
G11B 20/00 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
H04H 60/63 2008.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
HBROADCAST COMMUNICATION
60Arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time; Broadcast-related systems
61Arrangements for services using the result of monitoring, identification or recognition covered by groups H04H60/29 or H04H60/35166
63for services of sales
CPC
G10L 19/018
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech 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
018Audio watermarking, i.e. embedding inaudible data in the audio signal
G10L 19/167
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech 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
04using predictive techniques
16Vocoder architecture
167Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
G11B 20/00195
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
00188involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier
00195using a device identifier associated with the player or recorder, e.g. serial numbers of playback apparatuses or MAC addresses
G11B 20/00224
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
0021involving encryption or decryption of contents recorded on or reproduced from a record carrier
00217the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
00224wherein the key is obtained from a remote server
G11B 20/00289
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
0021involving encryption or decryption of contents recorded on or reproduced from a record carrier
00217the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
00253wherein the key is stored on the record carrier
00282the key being stored in the content area, e.g. program area, data area or user area
00289wherein the key is stored as a watermark
G11B 20/00891
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
00884involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
00891embedded in audio data
Applicants
  • MERIDIAN AUDIO LIMITED [GB]/[GB]
Inventors
  • <span class="term-highlight">STUART</span>, John Robert
  • HOLLINSHEAD, Richard J
  • <span class="term-highlight">CRAVEN</span>, Peter Graham
  • LAW, Malcolm
Agents
  • GILL JENNINGS & EVERY LLP
Priority Data
1302547.313.02.2013GB
1307795.330.04.2013GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) VERSATILE MUSIC DISTRIBUTION
(FR) DISTRIBUTION POLYVALENTE DE MUSIQUE
Abstract
(EN)
Methods and devices are described whereby a representation of an original PCM signal may be reversibly degraded in a controlled manner and information losslessly embedded to produce a streamable PCM signal, which provides a controlled audio quality when played on standard players and conditional access to a lossless presentation of the original PCM signal. Using such techniques allows control over the level of degradation of the signal and also flexibility in the type information of information embedded. Some methods require a song key, which is employed in one or both of the degrading and embedding steps and for creating a token. These methods may further require a user key, which is used to encrypt the song key before creating the token.
(FR)
L'invention concerne des procédés et des dispositifs grâce auxquels on peut déclasser de façon réversible la représentation d'un signal MIC original de manière contrôlée et incorporer sans perte des informations pour produire un signal MIC transmissible en continu, qui assure une qualité audio contrôlée quand il est joué sur des lecteurs standard et un accès conditionnel à une présentation sans perte du signal MIC original. L'utilisation de telles techniques permet un contrôle du niveau de déclassement du signal et aussi de la souplesse dans le type d'information des informations incorporées. Certains procédés nécessitent une clé de chanson, qui est employée dans une des opérations de déclassement et d'incorporation ou dans les deux et pour créer un jeton. Ces procédés peuvent en outre nécessiter une clé utilisateur qui sert à chiffrer la clé de chanson avant de créer le jeton.
Also published as
Latest bibliographic data on file with the International Bureau