Title:
CIPHER RECORDER, CIPHER RECORDING METHOD, PROGRAM FOR MAKING COMPUTER CARRY OUT THE METHOD, AND COMPUTER READABLE RECORDING MEDIUM WITH THE PROGRAM RECORDED THEREON
Document Type and Number:
Japanese Patent JP3786015
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To simplify operation sequence or procedures for the applied system of a network using type optical disk.
SOLUTION: A sub-information recording area is provided to the optical disk, and an ID or a cryptographic key or a decoding key different from a disk to a disk is recorded at a factory. Operation sequence or procedures can be obviated by a user's using the ID for deciphering software, the cryptographic key when transmitting a cipher, the decoding key when receiving a cipher, and safe distribution of information via a communication means is realized by checking the record of contents using prescribed information.
Inventors:
Mitsuaki Oshima
Yoshitoshi Goto
Shinichi Tanaka
Kenji Koishi
Mitsuro Moriya
Yoshiya Takemura
Yoshitoshi Goto
Shinichi Tanaka
Kenji Koishi
Mitsuro Moriya
Yoshiya Takemura
Application Number:
JP2002008404A
Publication Date:
June 14, 2006
Filing Date:
October 08, 1996
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G06F12/14; G11B20/10; G06F21/10; G06F21/60; G06F21/62; G11B7/004; H04L9/32; (IPC1-7): G11B20/10; G06F12/14; G11B7/004; H04L9/32
Domestic Patent References:
| JP7182112A | ||||
| JP5204945A | ||||
| JP5081774A | ||||
| JP5324499A | ||||
| JP7235131A | ||||
| JP5314652A | ||||
| JP7249227A | ||||
| JP7192385A | ||||
| JP785574A |
Attorney, Agent or Firm:
Fumio Iwahashi
Hiroki Naito
Daisuke Nagano
Hiroki Naito
Daisuke Nagano