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Patent Searching and Data


Title:
METHOD AND DEVICE FOR READING ELECTRONIC WATERMARK, ELECTRONIC WATERMARK READ PROGRAM, AND STORAGE MEDIUM WITH THIS PROGRAM STORED
Document Type and Number:
Japanese Patent JP3633488
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a storage medium in which a program for a digital watermark read method capable of safely and rationally reading a digital watermark is stored.
SOLUTION: The method is divided into a public processing procedure group which doesn't raise a safety issue of digital watermark techniques even when being generally published and a secrete processing procedure group, and the public processing procedure group is given to a user terminal, and the secret processing procedure group is given to a server, and the user terminal inputs pertinent contents to a procedure part, which should be first executed, of the public processing procedure group to perform processing and transmitted an outputted first read result to the server, and the server transmits a result of secret processing procedures to the user terminal, and processing like it is repeated between the user terminal and the server a required number of times to output a digital watermark read result.


Inventors:
Takao Nakamura
Hiroshi Ogawa
Tadashi Nakanishi
Application Number:
JP2001020761A
Publication Date:
March 30, 2005
Filing Date:
January 29, 2001
Export Citation:
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Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
G06F12/14; G06F21/10; G06F21/60; G06T1/00; G09C5/00; H04N1/387; H04N7/08; H04N7/081; H04N7/173; H04N21/238; H04N21/437; H04N21/44; (IPC1-7): H04N1/387; G06F12/14; G06T1/00; G09C5/00; H04N7/173
Domestic Patent References:
JP10154977A
JP7115536A
JP7058956A
JP11187011A
JP10322325A
JP2000215379A
JP2000172648A
JP2000019961A
JP2000353119A
JP2000148678A
JP10154977A
JP7115536A
JP7058956A
JP11187011A
JP10322325A
JP10322325A
JP2000215379A
JP2000172648A
JP2000019961A
JP2000353119A
JP2000148678A
Attorney, Agent or Firm:
Tadahiko Ito