Fujitsu Corporation

Hiroki Tashima

Ryo Kubota

An electronic apparatus includes: a power supply circuit that supplies power supply voltage to a load; an overcurrent detection circuit that performs output of detection information indicating the direction of current at a power supply path for the load in the power supply circuit when overcurrent occurs in the power supply path; and a determination circuit that performs output of notification information indicating whether or not a location at which a failure occurs exists within the power supply circuit or outside the power supply circuit, based on the detection information.

Electronic apparatus, power supply device, and power supply monitoring method

A battery control device includes: a battery; a storage circuitry configured to store a disconnection time which indicates a time at which a power supply is disconnected; and a diagnosis circuitry configured to, when the power supply is reactivated, diagnose a charge capacity of the battery at the time of reactivation based on a disconnection period obtained from the disconnection time and a time at when the power supply is reactivated, a temperature of the battery in a state during the power supply is disconnected and a deterioration degree of the battery.

Battery control device and battery charge capacity diagnosis method

A RAID device has a plurality of HDDs for a RAID configuration and controls the RAID configuration. The RAID device has a host that performs various data processes on the HDDs and a control unit that controls communication with the HDDs. With this configuration, if an initialization process for assigning physical addresses unique to the HDDs is performed, the RAID device receives initialization frames from the HDDs. Then, the RAID device detects abnormality of the HDDs in accordance with information contained in the received initialization frames.

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Yokohama, Japan

Hiroki Tashima