Acceleration correction for self-clocking write-head

Details Acceleration correction for self-clocking write-head Acceleration correction for self-clocking write-head

1980-12-08

1982-08-17

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Recording on or reproducing from an element of diverse utility

Card

235474, 235476, 235482, 360 73, G11B 2504, G11B 1518

Patent

active

043452787

ABSTRACT:
A time base signal for controlling the recording of binary data is developed by measuring the velocity of a magnetic record. The velocity is measured by determining an average velocity by the time interval required for a mark recorded by a write head to move a predetermined distance to a read head and correcting the average velocity as a function of the acceleration of the record. The acceleration is determined by recording a reference frequency pattern at a first station, reading the pattern at a second station, and measuring the difference between the written and read patterns.

REFERENCES:
patent: 3172091 (1965-03-01), Friend
patent: 3272969 (1966-09-01), Cutaia
patent: 3439354 (1969-04-01), Behr et al.
patent: 3914789 (1975-10-01), Coker, Jr. et al.
patent: 4264934 (1981-04-01), Mattes
M. G. Wilson, "System for Varying Oscillator Frequency", IBM Technical _Disclosure Bulletin, vol. 5, No. 11, Apr. 1963.
L. D. Larsen, "Variable Compensation for Acceleration in Hand-Scanned Codes", _IBM Technical Disclosure Bulletin, vol. 19, No. 7, Dec. 1976.

Affiliated with

Also associated with

Rating

Acceleration correction for self-clocking write-head does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Acceleration correction for self-clocking write-head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acceleration correction for self-clocking write-head will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-189470