Data compression control device

Details Data compression control device Data compression control device

1985-11-20

1988-07-19

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Recording for changing duration, frequency or redundant...

360 32, G11B 500

Patent

active

047588993

ABSTRACT:
A control device has a data compression control circuit for compressing data and a data buffer for temporarily storing the data to be written on a recording medium. The data transferred from a CPU is compressed and then recorded on the recording medium. Further provided is a buffer discriminating circuit for discriminating the quantity of data stored in the data buffer to control the data compression control circuit so that the data compressing operation and the operation of recording the data on the recording medium may be conducted in parallel while the amount of transferred data in the data buffer is prevented from becoming less than a predetermined quantity.

REFERENCES:
patent: 4206476 (1980-01-01), Hashimoro
patent: 4413289 (1983-11-01), Weaver et al.
patent: 4517596 (1985-05-01), Suzuki
patent: 4544948 (1985-10-01), Odaka

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