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Browse Prior Art Database

Multilead Tape Drive

IP.com Disclosure Number: IPCOM000079962D
Original Publication Date: 1973-Oct-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Uberbacher, EC: AUTHOR

Abstract

This multilead tape device is a relatively high capacity, quick access, compact, low-cost, reliable data storage unit. The unit consists of several magnetic tapes wound in parallel layers on a single supply reel, fanning out to discrete contact areas on a revolving dual-drum assembly.

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Multilead Tape Drive

This multilead tape device is a relatively high capacity, quick access, compact, low-cost, reliable data storage unit. The unit consists of several magnetic tapes wound in parallel layers on a single supply reel, fanning out to discrete contact areas on a revolving dual-drum assembly.

In the figure, the head disc 10 is located between the two drum sections 12,14 and carries a number of heads 16a, 16b corresponding to the number of tapes 18 accommodated. The read/write heads 16a,16b are arranged in a single line along the disc 10 edge, and located to coincide with the tapes 18 on the drums 12,14. Thus, head 16a engages tape "A" at the same time that tape "B" is engaged by head 16b, and so on. The disc 10 and drum sections 12,14 have the same outside diameter, and revolve about a common axis. The head disc velocity is compatible with the tape transport speed. This is done to assure the accurate location of the successive tape tracks.

The single track heads 16a,16b will write or read serially. The tape takeup or rewind will be on a single spool 20, with the tape winding in parallel layers as was the case on the supply reel 22. Thus, one supply and one takeup reel serve the same purpose as the prior pair of reels for each tape. The circuitry for the heads can be located on boards within the drum assembly.

The read or record operation employs the difference in speeds between the head disc 10 and tapes 18 and the matched multiple tape/magnetic head...