Hitachi, Ltd.

Hitachi Automotive Systems, Ltd.

Hitachi Astemo Ltd.

Masataka Ota

Yasuhiko Nagata

Hiroshi Kanno

Hiroshi Usami

Hisataka Sugiyama

Kenichi Yoshida

Satoru Ito

Masahiro Fujimoto

Masanori Matsuzaki

Kenya Nishiki

Katsuro Sugawara

Katsunori Yamashita

Kou Moriya

Generally, the current threshold value is set as a fixed value. Therefore, even in a case where an abnormality occurs in the load and the resistance value is small, when the power supply voltage applied to the load is low, the current value is also low, and falls below the threshold value, and there is a possibility that the overcurrent is not detected. In the present invention, by providing a second detection means that detects a load abnormality by calculating the resistance value of the load from information of the power supply voltage applied to the load, in addition to a first detection means that detects an overcurrent state that indicates the load abnormality using only current value information, it is possible to detect an overcurrent indicating an abnormality of the load even when the power supply voltage applied to the load is low.

Automotive electronic control unit

Provided is an electric control unit which is configured to switch the functions of an LCC, an HSD, and an LSD depending on a load to be connected. A power-supply-side switching elementis provided in a path Lbetween a power supplyand a connector terminal. A ground-side switching elementis provided in a path Lbetween a groundand a connector terminal. A freewheeling diodeis provided in a path Lconnected to a connection point Pbetween the power-supply-side switching elementand the connector terminaland a connection point Pbetween the ground-side switching elementand the connector terminal. A switching elementis provided in the path L

Electronic control unit

Provided is a vehicle control apparatus which can output, to the outside, a signal input from a sensor to an arithmetic processing unit while keeping delay at a lower level. An ECU (vehicle control apparatus) includes an arithmetic processing unit having a pair of an input port and an output port assigned to a sensor signal indicating a signal output from a sensor. The arithmetic processing unit performs arithmetic processing by using the sensor signal input from the input port, and outputs the sensor signal from the output port.

Vehicle control apparatus

An imaging apparatus, comprising: a first recording module, which has a first initialization time from initialization to coming into a recordable condition; a second recording module which has a second initialization time from initialization to coming into a recordable condition, being longer than the first initialization time; a mode switching module, which is configure to switch over a power OFF mode, a mode for recording into the first recording module, and a mode for recording into the second recording module, wherein the mode exchange switch, which is configured to exchange the mode in an order from the power OFF mode to the mode for recording into the first recording module, and to the mode for recording into the second recording module, whereby shortening an apparent initializations time of the recording module having a long initialization time, while using a high-speed initialization characteristic of the recording module having a short initialization time effectively, thereby obtaining an improvement on the operability for a user.

Imaging apparatus having specific mode switching sequence and hard disk drive appearance to externally-connected devices

Determining the degree of satisfaction of a user of network services quantitatively is difficult. A service quality management model defining means for defining the service condition and network depending relation and evaluation conditions, a means for storing the model in a DB, a service condition monitoring means for monitoring the transition of the service condition, and a service quality calculating and evaluating means for calculating service availability and executing special service maintaining and relieving measures are provided.

Service management system

A means for measuring the temperature in the surroundings of a semiconductor laser is provided and, if the temperature is not above a certain level, power correction is performed at high speed by linearly approximating the I-H characteristic according to one item out of reproduction power and multi-pulse recording power, or if the temperature is higher, accurate power correction of the semiconductor laser is accomplished by detecting a plurality of items out of reproduction power and multi-pulse recording power.

Optical disk device and luminescent power control method for semiconductor laser

A method of forming a passivation film, wherein after circuit elements have been formed in the semiconductor substrate, a thin conductive film is formed on the entire surface of the substrate and then an insulating film is formed through electric discharge on the surface of the thin conductive film while the thin conductive film is kept at a constant potential.

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Hitachinaka, Japan

Masataka Ota