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:
Dec. 07, 1993
Filed:
Jul. 22, 1992
Applicant:
Inventors:
Assignee:
Value Technology, Inc., , TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
380-4 ; 380 49 ; 380 50 ; 360 60 ; 360 69 ;
Abstract
A hard disk protection device comprising a decoding circuit which receives signals from the address and data buses of a personal computer to decode the signals associated with hard disk write actions and generating a signal to suppress the signal of IOW line so as to disable the write function of the hard disk. A switch is provided for a user to disconnect the decoding circuit from the hard disk so as to allow the hard disk to be operated as a conventional hard disk.