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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 3931639 B1

PDFFull Text
Date of Patent:
Jan. 06, 1976

Filed:

Jul. 12, 1974

Transverse track location device with calibrated stepper motor

Applicant:
Inventors:

Nelson Kay Arter, Longmont, CO (US);

George William Brock, Boulder, CO (US);

Howard Carl Jackson, Longmont, CO (US);

James Warren Leggate, Boulder, CO (US);

Assignee:

International Business Machines Corporation, Armonk, NY (US);

Attorney:

Somermeyer; Herbert F.

Primary Examiner:

Bernard Konick

Assistant Examiner:

Alan Faber

Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 70 ; 360 73 ; 318685 ;
Abstract

A track or stripe tape positioner for a helical scan or rotary head recorder uses digital techniques. The expected step size is preset into a counter. During the next phase, a calibration phase, the tape is stepped through a plurality of stripes whereat the preset value is adjusted to measured values. In the third phase, the average step size is maintained subject to certain averaged changes thus providing a high degree of noise rejection to ensure reliable incremental stepping of a record tape through the recorder.

Find Patent Forward Citations

Arter, Nelson. (1976). Transverse track location device with calibrated stepper motor (U.S. Patent No. 3931639). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3931639

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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