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1. WO2019043987 - CONTENT RECORDING DEVICE, CONTENT EDITING DEVICE, CONTENT REPRODUCTION DEVICE, CONTENT RECORDING METHOD, CONTENT EDITING METHOD, AND CONTENT REPRODUCTION METHOD METHOD

Publication Number WO/2019/043987
Publication Date 07.03.2019
International Application No. PCT/JP2018/004509
International Filing Date 09.02.2018
IPC
G09C 1/00 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
CCIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
1Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
G06F 21/60 2013.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
60Protecting data
CPC
G06F 21/60
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
60Protecting data
G09C 1/00
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
CCODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
1Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
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
Applicants
  • パナソニックIPマネジメント株式会社 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. [JP]/[JP]
Inventors
  • 福島 俊之 FUKUSHIMA Toshiyuki
  • 中谷 徳夫 NAKATANI Tokuo
  • 榎 信行 ENOKI Nobuyuki
  • 持永 和寛 MOCHINAGA Kazuhiro
  • 山本 雅哉 YAMAMOTO Masaya
Agents
  • 鎌田 健司 KAMATA Kenji
  • 前田 浩夫 MAEDA Hiroo
Priority Data
62/55339001.09.2017US
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) CONTENT RECORDING DEVICE, CONTENT EDITING DEVICE, CONTENT REPRODUCTION DEVICE, CONTENT RECORDING METHOD, CONTENT EDITING METHOD, AND CONTENT REPRODUCTION METHOD METHOD
(FR) DISPOSITIF D'ENREGISTREMENT DE CONTENU, DISPOSITIF D'ÉDITION DE CONTENU, DISPOSITIF DE REPRODUCTION DE CONTENU, PROCÉDÉ D'ENREGISTREMENT DE CONTENU, PROCÉDÉ D'ÉDITION DE CONTENU ET PROCÉDÉ DE REPRODUCTION DE CONTENU
(JA) コンテンツ記録装置、コンテンツ編集装置、コンテンツ再生装置、コンテンツ記録方法、コンテンツ編集方法、および、コンテンツ再生方法
Abstract
(EN)
A content recording device (401) is provided with an acquisition unit (411) for acquiring content that has a variable-length packet structure, an encryption unit (412) for encrypting the acquired content and thereby generating encrypted data, and a recording unit (413) for recording the generated encrypted data in a recording medium in fixed-length block units. The encrypted data includes an invalidated area that is not needed for content reproduction, and the recording unit (413) records the size of the invalidated area in the recording medium.
(FR)
L’invention concerne un dispositif d'enregistrement de contenu (401) comprenant : une unité d'acquisition (411) permettant d’acquérir un contenu qui possède une structure de paquet de longueur variable ; une unité de chiffrement (412) permettant de chiffrer le contenu acquis et de générer ainsi des données chiffrées ; et une unité d'enregistrement (413) permettant d’enregistrer les données chiffrées générées dans un support d'enregistrement dans des unités de bloc de longueur fixe. Les données chiffrées comprennent une zone invalidée qui n'est pas requise pour la reproduction de contenu, et l'unité d'enregistrement (413) enregistre la taille de la zone invalidée dans le support d'enregistrement.
(JA)
コンテンツ記録装置(401)は、可変長パケット構造を有するコンテンツを取得する取得部(411)と、取得されたコンテンツを暗号化することにより暗号化データを生成する暗号化部(412)と、生成された暗号化データを固定長のブロック単位で記録媒体に記録する記録部(413)とを備える。暗号化データには、コンテンツの再生に不要な無効化領域が含まれ、記録部(413)は、無効化領域のサイズを記録媒体に記録する。
Also published as
Latest bibliographic data on file with the International Bureau