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Patent Searching and Data


Title:
INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2017/038492
Kind Code:
A1
Abstract:
The present invention realizes, also at a content copy destination, a usage control configuration substantially similar to the content usage control performed on a copy source medium. According to the present invention, a data processing unit, which performs a copy process in which recorded data on a first medium is recorded onto a second medium, records an encrypted content on the first medium onto the second medium without performing decryption. In addition, the data processing unit generates, and records onto the second medium, a converted CPS unit key file obtained by converting a CPS unit key file recorded on the first medium. Furthermore, the data processing unit acquires, from a server, and records onto the second medium, a KCD-unrequiring MKB enabling direct calculation of a media key merely by using a device key and without using KCD (key conversion data) recorded on the first medium.

Inventors:
UEDA, Kenjiro (1-7-1 Konan, Minato-K, Tokyo 75, 〒1080075, JP)
OISHI, Tateo (1-7-1 Konan, Minato-K, Tokyo 75, 〒1080075, JP)
Application Number:
JP2016/074204
Publication Date:
March 09, 2017
Filing Date:
August 19, 2016
Export Citation:
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Assignee:
SONY CORPORATION (1-7-1, Konan Minato-K, Tokyo 75, 〒1080075, JP)
International Classes:
G11B20/10; G06F21/10; G11B27/00; H04L9/08; H04N5/765; H04N5/91
Domestic Patent References:
2013-11-28
2015-07-23
Foreign References:
JP2000311114A2000-11-07
JP2009027232A2009-02-05
JP2006146683A2006-06-08
Attorney, Agent or Firm:
MIYATA, Masaaki et al. (Daido Patent Attorneys Partnership Corporation, Daiwa Hatchobori ekimae Bldg. West 8F 3-25-9, Hatchobori, Chuo-K, Tokyo 32, 〒1040032, JP)
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