Browse Prior Art Database

Application of Non-Used Head on Data Digital Audio Tape

IP.com Disclosure Number: IPCOM000036802D
Original Publication Date: 1989-Oct-01
Included in the Prior Art Database: 2005-Jan-29
Document File: 2 page(s) / 94K

Publishing Venue

IBM

Related People

Suzuki, H: AUTHOR

Abstract

Disclosed is a technique to improve hard error rate of DAT (Digital Audio Tape) when it is used on data processing.

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Application of Non-Used Head on Data Digital Audio Tape

Disclosed is a technique to improve hard error rate of DAT (Digital Audio Tape) when it is used on data processing.

The DAT has two heads at each 180-degree position of cylinder head (Fig.
1). They are used reciprocally both on read and write operations. And it is understood generally that two more additional heads on the cylinder head are required to verify written data by reading just after writing (Fig. 2). To date these two additional heads are used on write operations but not on read operations.

Figs. 3, 4, 5 and 6 show several operations of the DAT. Fig. 7 shows the application of the above additional heads on read operation in order to improve hard error rate when one or two heads out of the basic two heads are damaged by malfunction (possibly one stuck at head gap).

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