Device controller having volatile and non-volatile memory for st

Details Device controller having volatile and non-volatile memory for st Device controller having volatile and non-volatile memory for st

1998-04-28

2000-06-20

Elms, Richard

Static information storage and retrieval

Addressing

36523008, G11C 800

Patent

active

060785411

ABSTRACT:
A device controller for controlling the operation of the drive device. The controller includes a microprocessor, a volatile memory, and a non-volatile memory. The non-volatile memory stores an uncompressed decompression program and a compressed device operating program. The microprocessor automatically decompresses the device operating program by executing the decompression program and stores the decompressed device operating program into the volatile memory when the drive is powered up or reset. The microprocessor then executes the device operating program stored in the volatile memory which has a faster data access rate than the non-volatile memory. As the device operating program is stored in a compressed form, the size of the non-volatile memory is minimized. The present invention may also reduce the size of a non-volatile memory for storing data used in a device controller.

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Doi, M., et al. Development of a Rotary Head Digital Audio Tape Recorder (R-DAT), Sanyo Technical Review vol. 19 No. 2, pp. 3-17, Aug. 1997.

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