Data storage system for transferring last entered information from static memory to magnetic disk upon recovering from data storage interruption
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 23, 1991
Issued Date -
N/A
app pub date -
Sep 18, 1989
filing date -
Dec 20, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A data storage system comprised of a disk drive including a magnetic disk for storing an operating system program, a dynamic RAM memory circuit for temporarily storing the operating system program, a static memory circuit for temporarily storing customer entered data, and a direct memory access controller for periodically transferring the customer entered data from the static memory circuit to the magnetic disk and for transferring the operating system program from the magnetic disk to the dynamic RAM memory circuit in response to execution of a bootstrap or power-up program by the microprocessor. In the case of a power down during entry of customer entered data, the customer entered data is saved in the static memory and is transferred to the magnetic disk during the subsequent power up thereby avoiding the use of possibly corrupted data on the disk drive.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully