The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 05, 2002

Filed:

Jul. 18, 2000
Applicant:
Inventors:

Yoshinobu Omata, Hachioji, JP;

Takashi Kondoh, Chofu, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/730 ;
U.S. Cl.
CPC ...
G06F 1/730 ;
Abstract

A digital data recording and reproducing system comprises a data input part and a data output part. Input data is manipulated through a computer system unit. The computer system unit comprises at least one of: a data retention part to store the digital data, a personal identification part to verify whether a user operating the digital data recording and reproducing system is authorized or not, an access log recording part to record that the user has accessed the data retention part, a falsification detection part to detect whether data stored in the data retention part is falsified or not, and a history data recording part to record information on changes or corrections in the data retention part. The computer system unit further comprises a control part which controls parts by giving operation instructions to the parts which the computer system unit comprises as the component parts, the parts including at least one of the data retention part, the personal identification part, the access log recording part, the falsification detection part, the history data recording part, the attribute control part and an execution decision part.


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