Copy protection disk format controller

Details Copy protection disk format controller Copy protection disk format controller

1993-05-27

1995-07-11

Hajec, Donald

Dynamic magnetic information storage or retrieval

General recording or reproducing

Recording-or erasing-prevention

360132, G11B 1504

Patent

active

054326478

ABSTRACT:
A disk format controller for a disk drive operating on a first disk containing an original version of a program and an application-specific decoding rule where signals are recorded according to an application-specific encoding rule, and operating on a second disk containing a copy of the program and a copy of the decoding rule where signals are recorded according to a generally established format. Signals from an address specified by a host unit are transferred to the host unit via an interface so that the original version of the program and the decoding rule are installed in the host unit when the first disk is used and the copy of the program and the copy of the decoding rule are installed in the host unit when the second disk is used. In a copying mode of the host unit, the generally established format is used to control the disk drive to write the copy of the program and the copy of the decoding rule onto a third disk whose recording format is therefore identical to the format of the second disk.

REFERENCES:
patent: 4323210 (1989-04-01), Bond
patent: 4534641 (1986-04-01), Guglielmino
patent: 4849836 (1989-07-01), Kachikian
patent: 4858036 (1989-08-01), Ginkel
patent: 4980782 (1990-12-01), Ginkel
patent: 5267311 (1993-11-01), Bakhoum

Affiliated with

Also associated with

Rating

Copy protection disk format controller does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Copy protection disk format controller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Copy protection disk format controller will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-507662