Disk drive apparatus having security function using password

Details Disk drive apparatus having security function using password Disk drive apparatus having security function using password

1996-08-02

1998-08-25

Palys, Joseph

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

711162, G06F 1216

Patent

active

057991456

ABSTRACT:
Test data are written into all password data areas SDAs located on each of surfaces of a disk arranged in a disk drive apparatus. SDAs each having a low error rate are selected. A predetermined number of SDAs dispersed on the plural disk surfaces are selected as effective SDAs from the selected SDAs. Position data of these effective SDAs are registered in an EEPROM. A password is written into each of the effective SDAs in a low error rate order and the disk drive apparatus is set to a locked state. A password input by a user is compared with the password written into each of the effective SDAs to release the locked state. Therefore, when an unlock command is input, the password is read from each of the effective SDAs in the writing sequential order of the password. When the password is correctly read, the read password is compared with the password input by the user. The locked state is released only when these passwords coincide with each other.

REFERENCES:
patent: 4604748 (1986-08-01), Sato
patent: 4943964 (1990-07-01), Hatanaka et al.
patent: 5027396 (1991-06-01), Platteter et al.
patent: 5189566 (1993-02-01), Christensen et al.
patent: 5282247 (1994-01-01), McLean et al.
patent: 5369533 (1994-11-01), Ottesen et al.
patent: 5371792 (1994-12-01), Asai et al.
patent: 5375243 (1994-12-01), Parzych
patent: 5392290 (1995-02-01), Brown et al.
patent: 5404357 (1995-04-01), Ito et al.
patent: 5421003 (1995-05-01), Escola et al.
patent: 5422761 (1995-06-01), Anderson et al.
patent: 5544083 (1996-08-01), Iizuka et al.
patent: 5596639 (1997-01-01), Kikinis

Affiliated with

Also associated with

Rating

Disk drive apparatus having security function using password does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Disk drive apparatus having security function using password, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk drive apparatus having security function using password will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-42925