Disk certifier

Details Disk certifier Disk certifier

1986-04-17

1988-05-24

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

324212, G11B 2736, G01R 3312

Patent

active

047469951

ABSTRACT:
A completely automated apparatus for disk certification which has a very high volume production per unit area of square footage required. Volumes of 108 million disks per year require only 1200 square feet of facility, about 3% of the space required for the prior art certification systems. The apparatus uses standard unmodified disk drives and is completely integrated with a conveyor and pickup system for automatic loading and unloading of diskettes. A method of sequencing operations on a disk is disclosed whereby all tracks of disk are written to provide a first test signal. Then all tracks are read after all tracks are written to provide a first read signal. Calculations are performed on the first read signal to obtain a calculated signal and the calculated signal is compared with a known standard. By writing an entire disk before reading the entire disk, rather than writing and reading on a track by track basis, operations on several disk drives can be sequenced to be performed simultaneously while using the same measurement electronics as would be required for one drive.

REFERENCES:
patent: 3686682 (1972-08-01), Behr et al.

Affiliated with

Also associated with

Rating

Disk certifier 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 certifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk certifier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1062016