Streaming tape drive with direct block addressability

Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record

Patent

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Details

360 741, 360 7802, G11B 2112

Patent

active

048580392

ABSTRACT:
A streaming tape drive for use in computer systems for the storage and retrieval of data on magnetic tape has the capability of locating a selected block of data stored on magnetic tape in serpentine fashion by first moving the magnetic head of the tape drive from one data track to another data track until the head is positioned to a data track which has a data block having a block number that is within a predetermined numeric value of the block number of the selected data block for which tape drive is searching. After the head is so moved to the data track, the tape drive performs a sequential search of the tape on a block-by-block basis until the selected data block is found. The tape drive has the capability to perform such searches on magnetic tape that is recorded in standard serpentine fashion, and no special tape recording format is required.

REFERENCES:
patent: 4321632 (1982-03-01), Leis et al.
patent: 4414593 (1983-11-01), Miller et al.
patent: 4500965 (1985-02-01), Gray
patent: 4541019 (1985-09-01), Precourt
patent: 4558380 (1985-12-01), Porter
Brochure-Archive Corporation, Viper 125, Bulletin 1530-10/86, Viper 60, Bulletin 1520-10/86.
Manual-Irwin Magnetic Systems, Inc., Tape Drive Oem Manual, May 1985, A copy of title page, copyright page, table of contents, pp. 1-1 through 1-5 of Chapter 1 and Chapters 3 and 5.

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