Patent
Information processing device, information recording medium, and information processing method
Takahashi Ryohei,Uchimura Kouichi +1 more
- 25 Feb 2020
TL;DR: In this article, a reproducing device calculates a reproduction path by applying a device key and selects and reproduces an aligned unit corresponding to the reproduction path on the basis of a variation data identifier recorded in an adaptation field in a plain text region at the head of a plurality of aligned units constituting the variation data.
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Abstract: A configuration capable of performing reliable source analysis of illegal copy content using content in which a reproduction path is settable is implemented. Content in which an individual segment region including a plurality of pieces of variation data which include different identification information embedded therein and are decryptable using different keys and a common segment region including single data are provided, and variation data is configured with an aligned unit is set. A content reproducing device calculates a reproduction path by applying a device key and selects and reproduces an aligned unit corresponding to the reproduction path on the basis of a variation data identifier recorded in an adaptation field in a plain text region at the head of a plurality of aligned units constituting the variation data.
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Information processing device, information recording medium manufacturing device, information recording medium, methods thereof, and computer program
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TL;DR: An information processing device for executing content reproduction processing includes: a content reproduction unit for executing data transformation processing for replacing a part of configuration data of input content to be reproduced with transformation data, and executing processing for reproducing the reproduction content as mentioned in this paper.
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Information processing apparatus, information recording medium manufacturing apparatus, information recording medium, method, and computer program
Yoshikazu Takashima,Kenjiro Ueda,Tateo Oishi,Katsumi Muramatsu,Jun Yonemitsu +4 more
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TL;DR: In this paper, the authors propose a fix-up table storing setting position information of the content and the correct member data to be substituted for the broken data in order to prevent unauthorized use of a content.
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