Method and apparatus for reading a disk

Details Method and apparatus for reading a disk Method and apparatus for reading a disk

1984-12-20

1986-10-21

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

360 39, G11B 509

Patent

active

046188983

ABSTRACT:
A method and apparatus for reading data from a disk having missing or unreadable field address marks. Expected address marks are searched for within a time window which is generated using a counter. When an expected address mark is generated at any time within the time window, the counter is set or reset to generate another time window within which the next address mark is expected to occur. By starting or restarting the counter each time an expected address mark is detected the effects of variations in spindle speed which occur prior to the detection of the address mark are eliminated, thus increasing the probability that readable address marks will be detected within a time window.

REFERENCES:
patent: 4357707 (1982-11-01), Delury
patent: 4425646 (1984-01-01), Kinoshita et al.
patent: 4459623 (1984-07-01), Glenn, II
patent: 4472818 (1984-09-01), Zapisek et al.

Affiliated with

Also associated with

Rating

Method and apparatus for reading a disk does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for reading a disk, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reading a disk will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1292665