Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD AND SYSTEM FOR DATA RECORDING / REPRODUCING, APPARATUS FOR RECORDING/REPRODUCING, AND MEDIA FOR RECORDING PROGRAM
Document Type and Number:
WIPO Patent Application WO/1999/038164
Kind Code:
A1
Abstract:
Digital data subjected to first encryption with a content key are recorded together with the content key subjected to second encryption. When the encrypted digital data and the encrypted content key are reproduced, the encrypted content key is decrypted and the decrypted content key is used to recover the digital data.

More Like This:
WO/1999/028912A METHOD AND DEVICE FOR INTERFACING VARIABLE-RATE SAMPLED DIGITAL AUDIO INFORMATION TO A STRING OF UNIFORM-SIZED BLOCKS, AND A UNITARY MEDIUM SO PRODUCED BY A WRITE-INTERFACING
JPH07226026DIGITAL SIGNAL RECORDING/REPRODUCING DEVICE
Inventors:
YAMADA MASAZUMI (JP)
IITSUKA HIROYUKI (JP)
GOTO SHOICHI (JP)
TAKECHI HIDEAKI (JP)
Application Number:
PCT/JP1999/000292
Publication Date:
July 29, 1999
Filing Date:
January 25, 1999
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
YAMADA MASAZUMI (JP)
IITSUKA HIROYUKI (JP)
GOTO SHOICHI (JP)
TAKECHI HIDEAKI (JP)
International Classes:
G11B20/00; H04N5/913; H04N5/775; (IPC1-7): G11B20/10; H04N5/91
Foreign References:
JPH07272399A1995-10-20
JPH07288798A1995-10-31
JPH09214929A1997-08-15
JPH0877706A1996-03-22
Other References:
See also references of EP 0989557A4
Attorney, Agent or Firm:
Matsuda, Masamichi (Miyahara 5-chome Yodogawa-ku Osaka-shi Osaka, JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: METHOD AND DEVICE FOR CODING LAG PARAMETER AND CODE BOOK PREPARING METHOD

Next Patent: VIDEO DATA RECORDING MEDIUM, VIDEO DATA RECORDING APPARATUS AND VIDEO DATA PLAYBACK APPARATUS