Title:
INFORMATION PROCESSING DEVICE, INFORMATION RECORDING MEDIUM, INFORMATION PROCESSING METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2018/173780
Kind Code:
A1
Abstract:
The present invention implements a configuration for reproducing block encrypted MMT format data with a timestamp applied thereto. An MMT format stream file and a reproduction control information file are created and recorded on a medium. The stream file is composed of: data blocks encrypted with an encryption key generated with an additional header as a seed, the additional header storing copy control information for each block; and the additional header. The reproduction control information file stores position identification information capable of determining the position in reproduction data, the position of a seed applied to the decryption of the reproduction data, the position of a timestamp, and the position of a seed applied to the decryption of the timestamp. The recorded information is used to perform data decryption and data reproduction with a timestamp applied thereto.
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Inventors:
UEDA KENJIRO (JP)
UCHIMURA KOUICHI (JP)
UCHIMURA KOUICHI (JP)
Application Number:
PCT/JP2018/009065
Publication Date:
September 27, 2018
Filing Date:
March 08, 2018
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
G11B20/10; G11B20/12; H04N5/913; H04N5/917; H04N5/92
Foreign References:
| JP2016027705A | 2016-02-18 | |||
| JP2017038313A | 2017-02-16 | |||
| JP2010009705A | 2010-01-14 | |||
| JP2016127324A | 2016-07-11 | |||
| JP2007074549A | 2007-03-22 | |||
| JP2011023071A | 2011-02-03 |
Other References:
See also references of EP 3605538A4
Attorney, Agent or Firm:
MIYATA, Masaaki et al. (JP)
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