Excavating
Patent
1992-01-28
1993-05-18
Fleming, Michael R.
Excavating
371 66, 371 14, 3642734, 3642732, 3642304, 364DIG1, 3649487, 3649485, 36493144, 364DIG2, G06F 128
Patent
active
052127974
ABSTRACT:
A multiple-CPU system including a main CPU and at least one subordinate CPU connected thereto. Both the main and subordinate CPU are provided with a respective voltage detector circuit for detecting when a main or primary power supply voltage for the CPU's has dropped below a predetermined threshold level. When the respective detector circuit outputs a signal indicating detection of the drop in main power supply voltage, the respective CPU is placed in a standby state. However, the threshold level of the detector circuit of the main CPU is set to a voltage lower than the threshold level of the detector circuit of the subordinate CPU. As a result, the subordinate CPU is placed in a standby state before the main CPU. The main CPU is equipped with an auxiliary power supply so that when the subordinate CPU is placed in a standby state, automatic recovery is thereafter carried out by the main CPU.
REFERENCES:
patent: 4553204 (1985-11-01), Hashimoto
patent: 4870570 (1989-09-01), Satoh et al.
patent: 4907183 (1990-03-01), Takaka
patent: 5095438 (1992-03-01), Sasaki
Kaneko Kiyotaka
Maeda Yutaka
Miyake Izumi
Nakane Yoshio
Shimaya Hiroshi
Auve Glenn A.
Fleming Michael R.
Fuji Photo Film Co. , Ltd.
LandOfFree
Multiple CPU system including automatic power supply restoration does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multiple CPU system including automatic power supply restoration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple CPU system including automatic power supply restoration will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-810145