Browse Prior Art Database

Computer Control of Tape Drives

IP.com Disclosure Number: IPCOM000062107D
Original Publication Date: 1986-Oct-01
Included in the Prior Art Database: 2005-Mar-09

Publishing Venue

IBM

Related People

Authors:
Bancroft, CE Floyd, RE Mueller, W Wilson, JA [+details]

Abstract

A technique is described whereby the control circuitry, available within magnetic tape drive units, is modified and connected to computer circuitry so as to enable tape drives to be controlled, through programming, by microprocessors or computers. By providing programming capability, operator intervention is eliminated since the computer is able to control the operational functions of the tape drives. The concept also enables the computer to operate several tape drives simultaneously. The most important requirement in determining if a particular commercially available tape drive can be modified is to determine if an internally generated frequency controls the motor speed. For the computer to control the speed of the tape, a circuit in the computer, such as a counter/timer card, will generate a programmable output frequency.