Memory contents confirmation

Details Memory contents confirmation Memory contents confirmation

1984-06-21

1987-02-24

Fleming, Michael R.

Excavating

371 66, 371 21, G06F 1116

Patent

active

046463070

ABSTRACT:
In an electronic apparatus, for example, a programmable calculator, a portable or handheld computer, a memory module, or a data collector, incorporating a battery backup RAM, the present invention provides means for first checking the memory contents when the power-OFF command has been activated, and then causes the results of the checking to be stored in a specific area of the RAM. When the memory contents checking command has been activated, the system rechecks the memory contents to see if the memory contents have varied. The invention securely confirms whether the memory contents of either the effective programs or data have been correctly backed up when either replacing the battery or during storage of an electronic apparatus that uses the battery backup RAM. This is particularly effective for portable or handheld programmable computers.

REFERENCES:
patent: 3937937 (1976-02-01), McVey
patent: 4266294 (1981-05-01), Daughton
patent: 4354230 (1982-10-01), Murphy
patent: 4354251 (1982-10-01), Hellwig
patent: 4355390 (1982-10-01), Hellwig
patent: 4558416 (1985-12-01), Pauwels
Crandall et al., Dynamic Self-Checking for a Read-Only Storage, IBM Tech. Discl. Bulletin, vol. 19, No. 8, Jan. 1977, pp. 2868-2869.

Affiliated with

Also associated with

Rating

Memory contents confirmation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Memory contents confirmation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Memory contents confirmation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-114234