Data protecting system for an echangeable storage medium compris

Details Data protecting system for an echangeable storage medium compris Data protecting system for an echangeable storage medium compris

1993-09-20

1996-12-10

Asta, Frank J.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

39518218, 395726, 369 32, 369 33, 364707, 3649488, 3649489, 364968, 364DIG1, 364DIG2, G06F 1216, G06F 126, G06F 1300

Patent

active

055840299

ABSTRACT:
The present invention writes intrinsic information such as the current time, etc. to both a memory and a storage medium when an exchangeable storage medium inserted in a drive device is mounted to a system. If the storage medium is removed from the drive device when the storage medium is being I/O accessed, then the execution of the present and the succeeding I/O requests is suspended. Then, if a storage medium is inserted in the drive device, then it is checked whether or not the intrinsic information stored in the memory has been written to the storage medium. Only when the information has been written to the storage medium, the suspended request for the storage medium is resumed. Accordingly, even if a storage medium has been erroneously removed from the drive device, all I/O requests are surely executed without being lost if the erroneously removed medium is inserted again. Furthermore, the data in a replacing storage medium won't be erroneously lost, either. The stop of power supply for a drive device is permitted only when a storage medium is not mounted to a system. Therefore, all I/O requests for the storage medium have been executed, and the data in another storage medium are not lost when power supply is resumed with another storage medium inserted during the suspension of the electric power supply.

REFERENCES:
patent: 5339444 (1994-08-01), Nakajima

Affiliated with

Also associated with

Rating

Data protecting system for an echangeable storage medium compris does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data protecting system for an echangeable storage medium compris, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data protecting system for an echangeable storage medium compris will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-432427