Iwagami, JP
Naoki Iwagami, Yokohama-Shi JP
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20080211153 | SYSTEM FOR CONTROLLING ELECTRIC DEVICE - A system for controlling an electric device comprises: a power supply for supplying electric power to an electric device; switch portion connected between the power supply and the electric device for controlling the electric power supplied to the electric device; an LC filter disposed between the switch portion and the electric device; and current detection portion for detecting an electric current supplied to the electric device. | 09-04-2008 |
20140358365 | ELECTRONIC CONTROL UNIT - An electronic control unit includes a controller configured to interrupt a failsafe relay for a predetermined time period while an external load, such as an electric servo motor, is in a non-operating state and to perform a diagnosis of a short-circuit fault, which may occur at a load power supply line, based on a difference between a first voltage applied to a positive power supply line and a second voltage applied to the load power supply line. | 12-04-2014 |
Norihiro Iwagami, Tokyo JP
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20090052518 | MOBILE RADIO COMMUNICATION DEVICE AND CHANNEL ESTIMATE CALCULATION METHOD - This mobile radio communication device comprises pilot symbol number determination unit | 02-26-2009 |
20100202332 | MOBILE COMMUNICATION SYSTEM, BASE STATION, AND TRANSMISSION POWER CONTROL METHOD USED FOR THEM - A base station ( | 08-12-2010 |
Norikazu Iwagami, Yamanashi JP
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20100081241 | SEMICONDUCTOR DEVICE AND FABRICATION METHOD THEREFOR, CAPACITIVE ELEMENT AND FABRICATION METHOD THEREFOR, AND MIS TYPE SEMICONDUCTOR DEVICE AND FABRICATION METHOD THEREFOR - A semiconductor device includes an operating layer made of a semiconductor and a silicon nitride film formed on the operating layer with the use of a mixed gas that includes mono-silane gas, hydrogen gas, and nitrogen gas, by a plasma CVD apparatus, under a condition that a flow rate of the hydrogen gas is 0.2 percent to 5 percent to an overall flow rate. | 04-01-2010 |
Takeyoshi Iwagami, Aki-Gun JP
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20090235524 | ASSEMBLING METHOD FOR TIMING SYSTEM OF ENGINE - Disclosed is an assembling method for a timing system of an engine to wind a timing chain ( | 09-24-2009 |
Toru Iwagami, Tokyo JP
Patent application number | Description | Published |
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20080211547 | Inverter citcuit - An inverter circuit includes an IGBT ( | 09-04-2008 |
20090180228 | Inverter circuit - An inverter circuit includes an IGBT ( | 07-16-2009 |
20130155745 | POWER SEMICONDUCTOR DEVICE - Among first IGBTs and first MOSFETs, a transistor arranged near a first gate control circuit gives, through a gate thereof, a gate control signal supplied from the first gate control circuit to a gate of a transistor arranged at a position farther from the first gate control circuit. Among second IGBTs and second MOSFETs, a transistor arranged near a second gate control circuit gives, through a gate thereof, a gate control signal supplied from the second gate control circuit to a gate of a transistor arranged at a position farther from the second gate control circuit. | 06-20-2013 |
Yuki Iwagami, Chiyoda-Ku JP
Patent application number | Description | Published |
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20080309163 | IN-VEHICLE MOUNT ELECTRONIC CONTROLLER - In an in-vehicle mount electronic controller, a constant-voltage power supply generates a high-precision small-capacity 5V output voltage Vad, a low-precision large-capacity 5V output voltage Vif and a low-precision large-capacity 3.3V output voltage Vcp, and also generates at least one of a low-precision small-capacity 2.8V output voltage Vup and a high-precision small-capacity 3.3V output voltage Vsb. A judgment signal input circuit logically combines comparison results of divided voltages of the above output voltages Vif, Vcp, Vup and Vsb with a divided voltage of the output voltage Vad as a reference voltage, and inputs relative voltage information ER | 12-18-2008 |
20090134970 | IN-VEHICLE ELECTRONIC CONTROL APPARATUS HAVING MONITORING CONTROL CIRCUIT - An in-vehicle electronic control apparatus, having a monitoring control circuit, according to the present invention is configured in such a way that serial interface circuits | 05-28-2009 |
20090138137 | IN-VEHICLE ELECTRONIC CONTROL APPARATUS HAVING MONITORING CONTROL CIRCUIT - An in-vehicle electronic control apparatus having a monitoring control circuit is configured in such a way that a monitoring control circuit unit transmits question information from a logic circuit unit; a main control circuit transmits answer information generated by a microprocessor; the monitoring control circuit unit applies an addition and subtraction correction to the value of a first present-value memory by use of a first and fourth variation values Δ | 05-28-2009 |
20110190957 | ELECTRONIC CONTROL APPARATUS - An electronic control apparatus is provided in which a supervisory control circuit part capable of mutual communication with a main control circuit part, which is operated by a high speed clock signal of high precision, is operated by a medium speed clock signal, which is low in cost and precision, such that they can operate mutually independently of each other. The main control circuit part supplies a medium speed communication synchronization signal frequency divided to the supervisory control circuit part. The supervisory control circuit part is operated by the medium speed clock signal to supervise the control operation of the main control circuit part. An error measuring circuit calculates an error correction coefficient which is the ratio of the signal cycle of the communication synchronization signal to that of the medium speed clock signal. The value of the error correction coefficient is reversely supervised by the main control circuit part. | 08-04-2011 |
20120292984 | VEHICLE-MOUNTED ELECTRONIC CONTROL DEVICE - In a vehicle-mounted electronic control device having a switching power supply in which a switching element is controlled to obtain a predetermined intermediate voltage Va stepped down from a vehicle-mounted battery, and to which a downstream side coil, a flywheel diode, and an output capacitor are connected to suppress a pulsating voltage, a circuit for suppressing reverse conduction for the switching element is provided in order to prevent that the switching element is reversely conducted and thus a charging voltage of the output capacitor is abnormally lowered when a power supply voltage Vb of the vehicle-mounted battery is abnormally lowered. | 11-22-2012 |
Yuki Iwagami, Tokyo JP
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20140365839 | ELECTRONIC CONTROL UNIT HAVING INTEGRATED CIRCUIT ELEMENT AND STANDALONE TEST UNIT FOR INTEGRATED CIRCUIT ELEMENT - There is provided a low-cost electronic control unit that is capable of performing its hardware check every start and stop of the electronic control unit. A monitoring and control circuit section that is an integrated circuit element built in the electronic control unit includes a self-test circuit configured with a built-in self-test control block, scan chain circuits and mask circuitry, and performs a self-test using the built-in self-test control block and a partial combination of the scan chain circuits at start of the operation. In the shipment inspection of the integrated circuit element alone, an external test is performed by a checker microprocessor using an entire combination of the scan chain circuits. Thus, the electronic control unit of low-cost configuration is capable of performing a scan test by making use of part of the scan chain circuits designed for the component inspection. | 12-11-2014 |