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公开(公告)号：CA2785131C
公开(公告)日：2016-04-26
申请号：CA2785131
申请日：2002-11-29
Applicant: SONY CORP , KONINKL PHILIPS ELECTRONICS NV , PANASONIC CORP
Inventor： NAKAMURA MASANOBU , KATO MOTOKI , VAN GESTEL WILHELMUS JACOBUS , MURASE KAORU , GOTOH YOSHIHO , SASAKI MIYUKI
IPC: G11B20/10 , H04N5/85 , G11B7/004 , G11B7/0045 , G11B7/007 , G11B19/04 , G11B20/12 , G11B20/18 , G11B27/32 , H04N5/92
Abstract: Congested rewriting in the same area is to be evaded to suppress the tendency towards occurrence of defective areas. When a stream 1 has been recorded, the last written address, representing the last written position, is stored. When recording a stream 2 next, recording is started directly following the position indicated by the last written address for the stream 1. The last written address, corresponding to the last address of the recording position, is stored. If the stream 2 is erased for recording a stream 3, recording is started not at a position directly following the last written address of the stream 1, but from a position directly following the last written address of the stream 2. When the stream 3 has reached the end of a recording area, the next following data is recorded as from a position directly following the stream 1.
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公开(公告)号：RU2473123C2
公开(公告)日：2013-01-20
申请号：RU2009135400
申请日：2008-02-22
Applicant: PANASONIC CORP
Inventor： NAKANO TOSIKHISA , MURASE KAORU
Abstract: Изобретениеотноситсяк областитехникизащитыавторскихправнацифровоесодержимое. Техническийрезультатзаключаетсяв обеспечениизащитыавторскогоправанасодержимое. Такойрезультатдостигаетсятем, чтопредоставленасистемаобработкиданныхпозащитесодержимогои устройствовоспроизведения, допускающееопределениетого, следуетлиразрешатьвоспроизведениесодержимого, записанногонаносительзаписи, наосноветипаносителядляносителязаписии типаподписидляподписи, присоединеннойк программе. 9 н. и 11 з.пф-лы, 9 ил.
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公开(公告)号：DE60140787D1
公开(公告)日：2010-01-28
申请号：DE60140787
申请日：2001-10-23
Applicant: PANASONIC CORP
Inventor： SHIMIZU YUSUKE , MURASE KAORU
IPC: G06F21/10 , H04N7/16 , G06F13/00 , G06Q10/00 , G06Q30/02 , G06Q30/06 , G06Q50/00 , G11B20/10 , H04N5/76 , H04N5/85 , H04N5/93 , H04N7/173 , H04N21/2543 , H04N21/258 , H04N21/442 , H04N21/462 , H04N21/4782 , H04N21/81 , H04N21/8355 , H04N21/858
Abstract: The digital contents providing system 700 selects second digital content to be reproduced along with first digital content which is selected by a user, depending on the individual information of a user such as age, sex, liking, and annual income, and sequentially reproduces the two digital contents as one reproducing stream according to reproducing control information specifying an order of reproducing the data included in both the first digital content and the second digital content.
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公开(公告)号：BRPI0807572A2
公开(公告)日：2014-07-01
申请号：BRPI0807572
申请日：2008-02-22
Applicant: PANASONIC CORP
Inventor： YAMAGUCHI TAKAHIRO , YAMAMOTO MASAYA , UGAWA SANZO , NAKANO TOSHIHISA , MURASE KAORU
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公开(公告)号：MY147696A
公开(公告)日：2013-01-15
申请号：MYPI20071319
申请日：2005-03-31
Applicant: PANASONIC CORP
Inventor： NONAKA MASAO , FUTA YUICHI , NAKANO TOSHIHISA , YOKOTA KAORU , OHMORI MOTOJI , MIYAZAKI MASAYA , YAMAMOTO MASAYA , MURASE KAORU , ONODA SENICHI
Abstract: AN EXECUTING DEVICE CONDUCTS PLAYBACK OF CONTENTS. THE EXECUTING DEVICE IS EQUIPPED WITH A HIGHLY EFFICIENT PROCESSOR AND REDUCES THE PROCESSING LOAD INVOLVED IN VERIFICATION BY USING, FOR THE VERIFICATION, ONLY A PREDETERMINED NUMBER OF ENCRYPTED UNITS SELECTED RANDOMLY FROM MULTIPLE ENCRYPTED UNITS CONSTITUTING ENCRYPTED CONTENTS RECORDED ON A DVD. IN ADDITION, THE EXECUTING DEVICE IS CAPABLE OF IMPROVING THE ACCURACY OF DETECTING UNAUTHORIZED CONTENTS BY RANDOMLY SELECTING A PREDETERMINED NUMBER OF ENCRYPTED UNITS EVERY TIME THE VERIFICATION IS PERFORMED.
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Patent Agency Ranking
公开(公告)号：DE69941133D1
公开(公告)日：2009-08-27
申请号：DE69941133
申请日：1999-10-08
Applicant: PANASONIC CORP
Inventor： TOMOYUKI OKADA , MURASE KAORU , TSUGA KAZUHIRO
Abstract: An information recording medium suitable for optical discs such as DVD-RAM is provided for integrated management of data as objects in different kinds of AV formats. Also apparatus is provided for data recording and playing to the medium. The medium stores management. information including program chain information (PGC information) defining the playback order of the objects, and object information containing information relevant to the objects. The object information has general information of the object, attribute information and a map associating a playback time point of the object with an address on the optical disc of a component of the object to be played. The PGC information has cell information including information about type of object, identification information. The order of the cell information in the PGC information corresponds to the order in which the objects are played back.
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公开(公告)号：CA2785131A1
公开(公告)日：2003-06-05
申请号：CA2785131
申请日：2002-11-29
Applicant: SONY CORP , KONINKL PHILIPS ELECTRONICS NV , PANASONIC CORP
Inventor： NAKAMURA MASANOBU , KATO MOTOKI , VAN GESTEL WILHELMUS JACOBUS , MURASE KAORU , GOTOH YOSHIHO , SASAKI MIYUKI
IPC: G11B20/10 , H04N5/85 , G11B7/004 , G11B7/0045 , G11B7/007 , G11B19/04 , G11B20/12 , G11B20/18 , G11B27/32 , H04N5/92
Abstract: Congested rewriting in the same area is to be evaded to suppress the tendency towards occurrence of defective areas. When a stream 1 has been recorded, the last written address, representing the last written position, is stored. When recording a stream 2 next, recording is started directly following the position indicated by the last written address for the stream 1. The last written address, corresponding to the last address of the recording position, is stored. If the stream 2 is erased for recording a stream 3, recording is started not at a position directly following the last written address of the stream 1, but from a position directly following the last written address of the stream 2. When the stream 3 has reached the end of a recording area, the next following data is recorded as from a position directly following the stream 1.
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公开(公告)号：BRPI0611366A2
公开(公告)日：2011-08-16
申请号：BRPI0611366
申请日：2006-05-23
Applicant: PANASONIC CORP
Inventor： YAMAMOTO MASAYA , ONODA SENICHI , NAGATA MINEHISA , MURASE KAORU
Abstract: A data generating is device capable of preventing unauthorized extraction of plaintext content between decryption processing and digital watermark embedment processing. A content reproducing device obtains restoration information and, in accordance with the restoration information, selectively performs predetermined restoration processing and processing of embedding device unique information, on content data at a position shown by the restoration information.
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公开(公告)号：ES2363517T3
公开(公告)日：2011-08-08
申请号：ES05727373
申请日：2005-03-24
Applicant: PANASONIC CORP
Inventor： NONAKA MASAO , FUTA YUICHI , NAKANO TOSHIHISA , YOKOTA KAORU , OHMORI MOTOJI , MIYAZAKI MASAYA , YAMAMOTO MASAYA , MURASE KAORU , ONODA SENICHI
Abstract: Un dispositivo de procesamiento de datos (1600; 4600) para la utilización de una obra digital (1120; 2120; 4120) registrada sobre un medio de registro (1500; 2500; 4500), que comprende: una unidad de utilización (1606; 2618) operativa para usar la obra digital (1120; 2120; 4120) y una unidad de control de la utilización operativa para detener la unidad de utilización (2618) con relación al uso de la obra digital (1120; 2120; 4120) si la obra digital (1120; 2120; 4120) no es válida, el medio de registro (1500; 2500; 4500) que tiene registrada en él la obra digital (1120; 2120; 4120) que está constituida por una pluralidad de bloques de datos (1231); el medio de registro (1500; 2500; 4500) que tiene registrado en él una pluralidad de valores de resumen de registros (1120; 2120; 4120) generados a partir de una pluralidad de bloques de datos (1231) que constituyen la obra digital y caracterizado por la pluralidad de valores de resumen del registro (1556; 4161, ..., 4166) usados para generar datos de firma del registro, sin excedente o escasez y el dispositivo de procesamiento de datos (1600; 4600) que comprende además: una unidad de selección (1611; 2105; 4611) que es operativa para seleccionar pseudo aleatoriamente un número predeterminado de bloques de datos de entre toda la pluralidad de bloques de datos (1231) en cada momento que se usa la obra digital (1120; 2120; 4120); una unidad de cálculo operativa para calcular los valores de resumen calculados (1556; 4161, ..., 4166) en base a los datos seleccionados; una unidad de lectura operativa para leer, dentro de la pluralidad de valores de resumen del registro (1556; 4161, ..., 4166), los valores de resumen del registro restantes que no incluyen un valor de resumen de registro que corresponde al valor de resumen de cálculo calculado; y una unidad de verificación de firma (1611; 2611; 4606) operativa para verificar si la obra digital (1120; 2120; 4120) es válida en base al registro de datos de firma (4170), todos los valores de resumen calculados y todos los valores de resumen del registro restantes.
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公开(公告)号：AU2005227472B2
公开(公告)日：2010-12-09
申请号：AU2005227472
申请日：2005-03-24
Applicant: PANASONIC CORP
Inventor： MURASE KAORU , FUTA YUICHI , ONODA SENICHI , OHMORI MOTOJI , YOKOTA KAORU , YAMAMOTO MASAYA , NAKANO TOSHIHISA , MIYAZAKI MASAYA , NONAKA MASAO
Abstract: Processing load on an executing device for conducting playback is high during the playback of contents since the executing device performs verification of the contents validity in parallel with the contents playback, and therefore the executing device has to be equipped with a highly efficient processor. The present invention reduces the processing load involved in the verification by using, for the verification, only a predetermined number of encrypted units selected randomly from multiple encrypted units constituting encrypted contents recorded on the DVD. In addition, the present invention is capable of improving the accuracy of detecting unauthorized contents to some extent by randomly selecting a predetermined number of encrypted units every time the verification is performed.
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