Title:
【発明の名称】データ蓄積装置及びデータ再生装置
Document Type and Number:
Japanese Patent JP3381715
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a data storage device and a data reproducing device, by which video data transferred via a bus is protected, when a plurality of digital video units are connected via the bus, to transfer video data via the bus between the digital video units. SOLUTION: It is authenticated whether data transfer is permitted or not with another unit. When it is decided that data transfer is permitted by the authentication result, the cipher of ciphering data to be supplied via the data bus is released. Then, data with the released cipher is recorded in a recording medium. Thus, control is performed to transfer data only to a specified opposite party to which transfer is permitted or to permit the reception of data only by the specified opposite party.
Inventors:
Junichi Tsukamoto
Koichi Goto
Shinichi Fukushima
Koichi Goto
Shinichi Fukushima
Application Number:
JP2000315610A
Publication Date:
March 04, 2003
Filing Date:
October 16, 2000
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H04N5/765; G06F21/10; G11B20/10; H04L9/08; H04L9/32; H04N5/44; H04N5/781; H04N5/91; H04N5/92; H04N5/93; H04N7/16; (IPC1-7): H04N5/91; G11B20/10; H04N5/765; H04N7/16
Domestic Patent References:
| JP6132916A | ||||
| JP1246979A | ||||
| JP4180451A | ||||
| JP7162832A | ||||
| JP2000217072A | ||||
| JP6261318A | ||||
| JP5885685A | ||||
| JP6416143A | ||||
| JP5501942A |
Attorney, Agent or Firm:
Masatomo Sugiura