Capstanless magnetic tape drive with electronic equivalent to le

Details Capstanless magnetic tape drive with electronic equivalent to le Capstanless magnetic tape drive with electronic equivalent to le

1982-06-04

1985-02-19

Shaw, Gareth D.

Boots, shoes, and leggings

364900, 360 55, G06F 300

Patent

active

045009651

ABSTRACT:
A magnetic tape drive capable of simulating the performance of a fast acceleration start/stop tape drive without a capstan drive or vacuum columns. A streaming type tape drive is provided with a semiconductor cache memory for storing data which may be written on, and data read from, a length of magnetic tape. Circuitry, including a microprocessor, DMA controller and service requests, handles data transfer between a host and the tape via the cache memory so that delays due to tape accelerations and decelerations are masked and the host can instantaneously read data bi-directionally and instantaneously switch between read and write operations.

REFERENCES:
patent: 3333250 (1967-07-01), Hill et al.
patent: 3503045 (1970-03-01), Wright
patent: 3772657 (1973-11-01), Marsalka et al.
patent: 3774156 (1973-11-01), Marsalka et al.
patent: 3942190 (1976-03-01), Detwiler
patent: 4040026 (1977-08-01), Gernelle
patent: 4392200 (1983-07-01), Arulpragasam et al.

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