Apparatus for and method of writing/reading data into/from a fle

Details Apparatus for and method of writing/reading data into/from a fle Apparatus for and method of writing/reading data into/from a fle

1986-06-23

1988-10-18

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

360 66, G11B 509, G11B 503

Patent

active

047791462

ABSTRACT:
A method of first erasing the full width of a recording track using an erase core before recording data into a flexible disk and then writing the new data into the erased area using a read/write core, and an apparatus for effecting the same are disclosed. The erasure by the erase core is done in an AC manner. A gap pattern used to form a gap area is written by the read/write core into a portion of the erased area where no valid data has been written.

REFERENCES:
patent: 2628287 (1953-02-01), Haynes
patent: 2736776 (1956-02-01), Camras
patent: 3514851 (1970-06-01), Perkins
patent: 3668332 (1972-06-01), Anderson
patent: 3900894 (1975-08-01), Aziz
patent: 4164781 (1979-08-01), Brown
patent: 4290088 (1981-09-01), Beecroft
patent: 4466027 (1984-08-01), Howellerzi
patent: 4616273 (1986-10-01), Ishii et al.
patent: 4633337 (1986-12-01), Horie et al.

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