Title:
CONTENT DISTRIBUTION/PROTECING METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2002/071752
Kind Code:
A1
Abstract:
A method for appropriately defining a standard realizable for an MPEG-n IPMP (intellectual property management and protection) system by introducing IPMP tool information placed at the first part of a content stream and an IPMP tool management function placed at the first part of a content decoder as a pre-processing module, and by acquiring an IPMP tool according to the IPMP tool information. To improve the security of different IPMP systems and to provide a terminal compatibility, a two-layer structure is proposed and a user authentication output is defined. The complexity of a terminal is overcome by defining different characteristics when an IPMP tool is acquired.
Inventors:
SHEN SHENG MEI (SG)
JI MING (SG)
SENOH TAKANORI (JP)
KOGURE TAKUYO (JP)
JI MING (SG)
SENOH TAKANORI (JP)
KOGURE TAKUYO (JP)
Application Number:
PCT/JP2002/001698
Publication Date:
September 12, 2002
Filing Date:
February 26, 2002
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
SHEN SHENG MEI (SG)
JI MING (SG)
SENOH TAKANORI (JP)
KOGURE TAKUYO (JP)
SHEN SHENG MEI (SG)
JI MING (SG)
SENOH TAKANORI (JP)
KOGURE TAKUYO (JP)
International Classes:
G06T1/00; G06F13/00; G06F21/10; G09C5/00; H04L9/08; H04L9/16; H04N1/387; H04N7/08; H04N7/081; H04N7/16; H04N7/167; H04N21/258; H04N21/835; (IPC1-7): H04N7/167
Foreign References:
| JP2000083022A | 2000-03-21 | |||
| JP2000287206A | 2000-10-13 | |||
| JPH10257046A | 1998-09-25 | |||
| JPH11331310A | 1999-11-30 | |||
| JPH08331543A | 1996-12-13 | |||
| JP2000101853A | 2000-04-07 | |||
| JPH1051778A | 1998-02-20 | |||
| JPH1051779A | 1998-02-20 | |||
| JP2001078007A | 2001-03-23 | |||
| JP2001359070A | 2001-12-26 |
Other References:
NIPPON, OHMU SHA, ELECTRONICS, no. 554, 1 July 2000 (2000-07-01), pages 51 - 54, XP002952638
See also references of EP 1370083A4
See also references of EP 1370083A4
Attorney, Agent or Firm:
Aoyama, Tamotsu (3-7 Shiromi 1-chome Chuo-k, Osaka-shi Osaka, JP)
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