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1. WO2005001830 - DISPOSITIF DE GESTION D'ACCUMULATION PROVISOIRE

Numéro de publication WO/2005/001830
Date de publication 06.01.2005
N° de la demande internationale PCT/JP2004/009575
Date du dépôt international 30.06.2004
CIB
H04N 5/913 2006.01
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
NTRANSMISSION D'IMAGES, p.ex. TÉLÉVISION
5Détails des systèmes de télévision
76Enregistrement du signal de télévision
91Traitement du signal de télévision pour l'enregistrement
913pour la transposition
CPC
G11B 20/00086
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
G11B 20/0021
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
G11B 20/00492
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
00485characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
00492wherein content or user data is encrypted
G11B 20/00666
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
00666involving a step of erasing or nullifying data, e.g. data being overwritten with a random string
G11B 20/00673
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
00666involving a step of erasing or nullifying data, e.g. data being overwritten with a random string
00673wherein the erased or nullified data include a cryptographic key
G11B 20/00753
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
00731involving a digital rights management system for enforcing a usage restriction
00746wherein the usage restriction can be expressed as a specific number
00753wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
Déposants
  • ソニー株式会社 SONY CORPORATION [JP/JP]; 〒141-0001 東京都 品川区 北品川6丁目7番35号 Tokyo 7-35, Kitashinagawa 6-chome Shinagawa-ku, Tokyo 141-0001, JP (AllExceptUS)
  • 山来 真木夫 YAMAKI, Makio [JP/JP]; JP (UsOnly)
Inventeurs
  • 山来 真木夫 YAMAKI, Makio; JP
Mandataires
  • 田辺 恵基 TANABE, Shigemoto; 〒141-0032 東京都 品川区 大崎3丁目6番4号 トキワビル5階 Tokyo Tokiwa Building 5th Floor 6-4, Osaki 3-chome Shinagawa-ku, Tokyo 141-0032, JP
Données relatives à la priorité
2003-18895830.06.2003JP
Langue de publication japonais (JA)
Langue de dépôt japonais (JA)
États désignés
Titre
(EN) TEMPORARY ACCUMULATION MANAGEMENT DEVICE
(FR) DISPOSITIF DE GESTION D'ACCUMULATION PROVISOIRE
(JA) 一時蓄積管理装置
Abrégé
(EN)
It is possible to manage temporary accumulation of content data as is specified. Temporary accumulation of a recording transport stream TS3 whose temporary accumulation is allowed in such a manner that reproduction is enabled only during a temporary accumulation-allowed time is managed as follows. A reproducible head point indicating the head point reproducible from the recording transport stream TS3 is correlated to the first time stamp among the time stamps for the respective GOP’s of the recording transport stream TS3. Each time a period from the time stamp to which the reproducible head point is correlated to the current time reaches a temporary accumulation-allowed time, the reproducible head point is re-correlated to the other time stamp following the time stamp. Thus, it is possible to successively exclude the recording transport stream TS3 from the reproducible range as the temporary accumulation-allowed time elapses, i.e., easily and appropriately making it non-reproducible, thereby easily and appropriately managing the temporary accumulation of the recording transport stream TS3 as is specified.
(FR)
Selon cette invention, il est possible de gérer l'accumulation provisoire de données de contenus. L'accumulation provisoire d'un flux de transport d'enregistrement TS3, cette l'accumulation provisoire étant autorisée de telle sorte que la reproduction soit validée uniquement pendant un temps autorisé d'accumulation provisoire, est gérée comme suit. Un point d'en-tête reproductible indiquant le point d'en-tête reproductible à partir du flux de transport d'enregistrement TS3 est mis en corrélation avec la première estampille parmi les estampilles des GOP respectifs du flux de transport d'enregistrement TS3. Chaque période, de l'estampille à celle du point d'en-tête reproductible, mise en corrélation avec le temps courant, atteint une temps autorisé d'accumulation provisoire, le point d'en-tête reproductible est remis en corrélation avec l'autre estampille suivante. Il est ainsi possible d'exclure successivement le flux de transport d'enregistrement TS3 de la plage reproductible au moment où s'écoule le temps autorisé d'accumulation provisoire, c.-à-d. le rendre facilement et de façon appropriée non reproductible, ce qui permet de gérer facilement et de manière appropriée l'accumulation provisoire du flux de transport d'enregistrement TS3.
(JA)
本発明は、コンテンツデータに対する一時蓄積を規定通りに管理する。本発明は、記録媒体に一時蓄積許容時間に限り再生可能な一時蓄積が許可された記録用トランスポートストリームTS3の一時蓄積を管理する際に、当該記録用トランスポートストリームTS3のGOP毎のタイムスタンプのうち先頭のタイムスタンプに記録用トランスポートストリームTS3に対する再生可能な先頭点を示す再生可能先頭点を対応付け、当該再生可能先頭点を対応付けたタイムスタンプから現在時刻までが一時蓄積許容時間に達する毎に、そのタイムスタンプよりも後の他のタイムスタンプに再生可能先頭点を対応付け直すことにより、記録用トランスポートストリームTS3の一時蓄積許容時間が経過する部分を再生可能範囲から順次外して容易かつ適確に再生不能化でき、記録用トランスポートストリームTS3に対する一時蓄積を規定通りに容易かつ適確に管理できる。
Dernières données bibliographiques dont dispose le Bureau international