Title:
COPY PREVENTION-TREATING DEVICE FOR DIGITAL DATA, COPY PREVENTION-TREATING METHOD, COPY PREVENTION-TREATED DATA RECORDED-RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2001/088916
Kind Code:
A1
Abstract:
A copy prevention-treating method including steps, wherein an input means acquires an original data row, a data processing means encodes at least part of the acquired original data row, and adds to the original data row decoded data that contain data completely changed in descriptions once copied and that generate, when read into a preset device, a decoder for decoding the original data row encoded in the preset device, and an output means records the encoded and decoded data-added original data row onto a preset recording medium. Since decoded data are completely changed by being copied, the copied decoded data fail to generate a decoder in a preset device even when read into the preset device.
Inventors:
SATO YASUTAKA (JP)
Application Number:
PCT/JP2000/003102
Publication Date:
November 22, 2001
Filing Date:
May 15, 2000
Export Citation:
Assignee:
EMDES CO LTD (JP)
SATO YASUTAKA (JP)
SATO YASUTAKA (JP)
International Classes:
G11B20/00; (IPC1-7): G11B20/10
Foreign References:
| JPH10289522A | 1998-10-27 | |||
| JPH10162501A | 1998-06-19 | |||
| JPH11232777A | 1999-08-27 | |||
| JPH11144380A | 1999-05-28 |
Attorney, Agent or Firm:
Muramatsu, Yoshihito (4th Floor 22-7, Shiba 3-chome Minato-ku Tokyo, JP)
Download PDF:
Previous Patent: A COMPOSITE SMART CARD OPTICAL DISK AND ITS MANUFACTURING METHODS
Next Patent: DATA RECORDING MEDIUM AND REPRODUCING APPARATUS THEREOF
Next Patent: DATA RECORDING MEDIUM AND REPRODUCING APPARATUS THEREOF