Browse Prior Art Database

Track Crossing Responsive Device

IP.com Disclosure Number: IPCOM000084668D
Original Publication Date: 1975-Dec-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 53K

Publishing Venue

IBM

Related People

Paska, TM: AUTHOR

Abstract

This device provides accurate and reliable information of the crossing of data tracks A..W, X, Y, Z on a magnetic disk 10 by a magnetic transducer 12, by utilizing a track cross gap 12a in the transducer 12 which extends at right angles to a data gap 12b in the transducer 12.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 58% of the total text.

Page 1 of 2

Track Crossing Responsive Device

This device provides accurate and reliable information of the crossing of data tracks A..W, X, Y, Z on a magnetic disk 10 by a magnetic transducer 12, by utilizing a track cross gap 12a in the transducer 12 which extends at right angles to a data gap 12b in the transducer 12.

Magnetic disk 10 is rotatable about a center 14, and the data tracks A..W, X, Y and Z are concentric about center 14 and alternately have magnetizations in opposite circumferential directions c and d. Track crossing information is provided between data tracks A..W, X, Y and Z in the form of magnetizations a and b extending radially with respect to center 14, and at right angles to the magnetizations c and d.

Data gap 12b extends radially with respect to center 14 and is thus responsive to the magnetizations c and d of the data tracks A..W, X, Y and Z, but is not responsive to the track crossing information in the form of magnetizations a and b extending radially on disk 10. Track cross gap 12a is at right angles to data gap 12b and is, therefore, responsive to the concentric magnetizations a and b but is not responsive to the magnetizations c and d.

Transducer 12 is mounted on any suitable carriage and is moved thereby radially of disk 10, so that the information on various of the data tracks A..W, X, Y and Z may be read by data gap 12b. As transducer 12 is moved between tracks
A..W, X, Y and Z, track cross gap 12a discerns the track crossing information or s...