Static information storage and retrieval – Powering – Data preservation
Patent
1992-02-21
1994-06-14
LaRoche, Eugene R.
Static information storage and retrieval
Powering
Data preservation
365228, 36518903, G11C 1300
Patent
active
053216636
ABSTRACT:
A memory card is provided having a memory, in which data entered through a plurality of data input-output terminals are written. The voltage of a backup battery for supplying the memory to preserve the data therein is compared with two different reference voltages so as to detect two binary battery check signals. When the memory card is loaded in an electronic device, one of the two battery check signals is outputted to the electronic device through one of the data input-output terminals, while the other battery check signal is outputted through a battery check terminal. Alternatively, both of the battery check signals are outputted through two of the data input-output terminals. The electronic device displays a condition of the backup battery by energizing green, yellow or red LEDs to emit light, in accordance with the battery check signals.
REFERENCES:
patent: 4654829 (1987-03-01), Jiang et al.
patent: 4662736 (1987-05-01), Taniguchi et al.
patent: 4908790 (1990-03-01), Little et al.
patent: 4985870 (1991-01-01), Faraci
patent: 5007027 (1991-04-01), Shimoi
Dinh Son
Fuji Photo Film Co. , Ltd.
LaRoche Eugene R.
LandOfFree
Memory card and method and apparatus for checking backup voltage 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 card and method and apparatus for checking backup voltage, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Memory card and method and apparatus for checking backup voltage will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1254568