Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Multitrack Transducer With Track Selectivity

IP.com Disclosure Number: IPCOM000078136D
Original Publication Date: 1972-Nov-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 19K

Publishing Venue

IBM

Related People

Hyland, RN: AUTHOR [+3]

Abstract

This diagrammatically represented multitrack transducer consists of nine heads. Each head may, for example, be a magnetic read head, a magnetic write head or a magnetic read/write head. The transducer is designed so that, in one mode of operation, all of the heads may be operated simultaneously, while in other modes a single head or a number of heads may be operated. For example, where heads H1 through H9, inclusive are activated, the system operates as a nine-track transducer. Where, for example, tracks H3, H6 and H9 are activated, the system operates as a three-track transducer. With these operational capabilities, a single transducer is capable, at different times, of operating at both high and low densities.

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 98% of the total text.

Page 1 of 2

Multitrack Transducer With Track Selectivity

This diagrammatically represented multitrack transducer consists of nine heads. Each head may, for example, be a magnetic read head, a magnetic write head or a magnetic read/write head. The transducer is designed so that, in one mode of operation, all of the heads may be operated simultaneously, while in other modes a single head or a number of heads may be operated. For example, where heads H1 through H9, inclusive are activated, the system operates as a nine-track transducer. Where, for example, tracks H3, H6 and H9 are activated, the system operates as a three-track transducer. With these operational capabilities, a single transducer is capable, at different times, of operating at both high and low densities.

The number of heads in a single transducer is not limited to nine. Any number of heads may be included. For example, twenty-seven heads may be present, and yet, at some times only every third head may be energized to read or write a nine-track format. This downward compatibility can be put to advantage, for example, when a normally high-density magnetic recording system is occasionally required to read or write in a less dense format.

When less than all heads are used to write, all or part of the remaining heads can be operated in an erase mode. This acts to remove data in all or selected areas of the magnetic recording medium that are not receiving data from the activated heads.

1

Page 2 of 2

2

[This page cont...