File backup system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 22, 1991
Grant Date -
N/A
app pub date -
Feb 27, 1989
filing date -
Mar 25, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A file backup system for POS data includes a master terminal and a backup terminal along with a master file and a backup file, all of which are coupled to a plurality of satellite terminals. A file controller is provided for each of the files. When one of the files is down, the master file is capable of copying the contents of the down file while simultaneously responding to a request from any terminal and controlling the transfer of data without stopping the operation of the system.
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Family
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Cited Art Landscape
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