Static information storage and retrieval – Magnetic bubbles – Guide structure
Patent
1987-05-05
1989-03-28
Perkey, W. B.
Static information storage and retrieval
Magnetic bubbles
Guide structure
354468, 354484, 365229, 307 23, 307 28, 307 29, 307 39, 307 66, 307 86, G03B 726, G03B 1724, G11C 2900, H02J 900
Patent
active
048168629
ABSTRACT:
An electronic appliance having a microcomputer, peripheral devices controlled by the microcomputer, a main battery acting as power source, and a backup battery for outputting signals indicating the presence and absence of the main battery. Checking is made of whether the main battery is loaded in the appliance or not and whether the output voltage of the main battery is above a predetermined voltage or not. When the main battery is not loaded or when its output voltage is below the predetermined voltage, the backup battery is made available for preserving information in the memory inside or outside the microcomputer in good order, with operations of the peripheral devices being restricted at such times. Further, the disclosed electronic appliance provides for limiting malfunctioning of the microcomputer and the peripheral devices when a new main battery has been loaded in the appliance as replacement for an exhausted main battery.
REFERENCES:
patent: 4044268 (1977-08-01), Hammel et al.
patent: 4091395 (1978-05-01), Kozuki et al.
patent: 4182110 (1980-01-01), Kamiwaki et al.
patent: 4209710 (1980-06-01), Quarton
patent: 4422163 (1983-12-01), Oldenkamp
patent: 4469990 (1984-09-01), Maruyama et al.
patent: 4506766 (1985-03-01), Watanabe
patent: 4509843 (1985-04-01), Hasegawa
patent: 4561754 (1985-12-01), Matsuyama
patent: 4580248 (1986-04-01), Imaizumi
patent: 4587640 (1986-05-01), Saitoh
patent: 4662736 (1987-05-01), Taniguchi et al.
patent: 4672585 (1987-06-01), Nollet
Ootsuka Hiroshi
Taniguchi Noguyuki
Tominaga Shinji
Ueda Hiroshi
Yamamoto Kouji
Minolta Camera Kabushiki Kaisha
Perkey W. B.
LandOfFree
Power supply system for memory unit of camera does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Power supply system for memory unit of camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power supply system for memory unit of camera will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1663104