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.
Patent No.:
Date of Patent:
Oct. 15, 2002
Filed:
Jan. 13, 1999
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06R 1/314 ;
U.S. Cl.
CPC ...
G06R 1/314 ;
Abstract
A drive unit connecting system for connecting a drive unit for an optical information/data recording medium to a reproducing apparatus serving as a destined host apparatus through the medium of a general-purpose interface is designed to inhibit normal operation when the drive unit is connected to other apparatus than the destined one without employing expensive IC chips dedicated for authentication. The drive unit connecting system enables a drive unit to be connected to only a proper reproducing apparatus through a general-purpose interface by performing software-based processing on either one of command(s) or parameter(s) or alternatively on both of the command(s) and the parameter(s).