| Patent application number | Description | Published |
|---|
| 20090022255 | Communication System, Real-Time Control Device, and Information Processing System - In addition to fast on-off timing, instructive information on an output wave such as an amplitude or a slope is transmitted through a small number of signal lines. Output wave modifier information such as the amplitude or slope is transferred through serial communication | 01-22-2009 |
| 20090058407 | PHYSICAL QUANTITY CONVERSION SENSOR AND MOTOR CONTROL SYSTEM USING THE SAME - A first sensor element outputs a first output signal in correspondence to a direction of the magnetic flux lines acting from the outside. A second sensor element outputs a second output signal associated with the first output signal in correspondence to a direction of the magnetic flux lines acting from the outside. A first conversion processing section converts the first output signal output from the first sensor element and the second output signal output from the second sensor element into the second physical quantity. A second conversion processing section converts the first output signal output from the first sensor element and the second output signal output from the second sensor element into a signal representing the rotation angle of the motor. | 03-05-2009 |
| 20090089627 | Distributed Control System - There is provided a distributed system having a plurality of nodes connected by a network. Each of the nodes includes: a common-parameter-value determining unit for determining a common-parameter-value from values of a parameter (each value being possessed by a corresponding one of the nodes); a common-operation execution unit for executing a common-operation using, as its input, a value of the parameter or the common-parameter-value; a send/receive unit for exchanging, via the network, the parameter values used for the determination of the common-parameter-value and the results of the common-operation execution with the other nodes; and a fault identification unit that compares the common-operation execution results collected from all the nodes and determines that an error occurs if not all the results are the same. | 04-02-2009 |
| 20090249271 | MICROCONTROLLER, CONTROL SYSTEM AND DESIGN METHOD OF MICROCONTROLLER - Two data processing units having the same function, one of which is used for a master and the other for comparison, are provided, control of a circuit unit is performed by the master, the master data processing unit and the circuit unit are operated in synchronization with a first clock signal, the second data processing unit is operated in synchronization with a second clock signal having the same cycle and different phase from the first clock signal, and processing results of both the data processing units are compared in a comparison circuit. Flip flops are disposed on a signal path from the circuit unit to the comparison data processing unit and on a signal path from the master data processing unit to the comparator, and both the first and second clock signals are used for latch clocks of the flip flops in accordance with input signals thereof. | 10-01-2009 |
| 20100030421 | VEHICLE CONTROL SYSTEM - A vehicle control system which can ensure high reliability, real-time processing, and expandability with a simplified ECU configuration and a low cost by backing up an error through coordination in the entire system without increasing a degree of redundancy of individual controllers beyond the least necessary level. The vehicle control system comprises a sensor controller for taking in sensor signals indicating a status variable of a vehicle and an operation amount applied from a driver, a command controller for generating a control target value based on the sensor signals taken in by the sensor controller, and an actuator controller for receiving the control target value from the command controller and operating an actuator to control the vehicle, those three controller being interconnected via a network. The actuator controller includes a control target value generating unit for generating a control target value based on the sensor signals taken in by the sensor controller and received by the actuator controller via the network when the control target value generated by the command controller is abnormal, and controls the actuator in accordance with the control target value generated by the control target value generating unit. | 02-04-2010 |
| 20100090630 | BRUSHLESS MOTOR SYSTEM - A brushless motor system which can suppress adverse influences of electromagnetic noise without increasing the size and enhancing the performance of a filter circuit. In a brushless motor system comprising a brushless motor, an inverter, and a direct current power source, a noise return line for returning a noise current is connected between the brushless motor and the inverter. The noise current is generated in the inverter and reaches the brushless motor. With the provision of the noise return line, a common mode current leaking from the brushless motor to a ground can be reduced. | 04-15-2010 |
| 20100217943 | MICROCONTROLLER AND ELECTRONIC CONTROL UNIT - A microcontroller in which respective CPUs execute different applications so as to improve processing performance, and the respective CPUs execute an application that requires safety and mutually compare the results thereof so as to enhance the reliability of write data is provided. The microcontroller has a plurality of processing systems made up of a first CPU, a second CPU, a first memory and a second memory, and for the instruction processing about specific processing set in advance, the write to peripheral modules which are not multiplexed is executed twice, and the write data of the first time and the second time are mutually collated. | 08-26-2010 |
| 20100219822 | Magnetic Field Detection Apparatus and Measurement Apparatus - There has been a problem that a bridge circuit using magneto-resistive elements or transducer elements could output a signal including an offset voltage, which could result in lower measurement accuracy. In order to solve such a problem, half-bridges each having magneto-resistive elements or transducer elements are excited with different excitation voltages so that the offset voltage is eliminated and the measurement accuracy is improved. | 09-02-2010 |
| 20100327979 | Current Detection Apparatus and Control System Using the Same - A highly accurate current detection apparatus is realized in a one-chip LSI. An end of a current detector is connected to an analog power supply (VACC) or a virtual analog ground potential (VAG) of a voltage amplifier and an A/D converter, and a predetermined voltage is supplied between the voltage amplifier and the virtual ground potential (VAG) by a power supply. | 12-30-2010 |
| 20110049988 | Control System and Semiconductor Device Used Therein - The present invention aims to provide a control system which is capable of building high-precision current detecting means in a single-chip LSI and can be realized at a lower cost, and a semiconductor device used in the control system. Drive circuits are provided inside the same semiconductor chip. The drive circuits are equipped with: current detecting shunt resistors each of which is provided in each of the drive circuits and detects a current flowing through a load, the current detecting shunt resistors being provided within a semiconductor chip by the same process; a dummy resistor provided within the semiconductor chip by the same process as the current detecting shunt resistors; and a calibration reference externally attached to the semiconductor chip and connected to the dummy resistor. A correcting means corrects the values of currents that flow through the current detecting shunt resistors, using the dummy resistor and the calibration reference. | 03-03-2011 |
| 20110101959 | CURRENT-CONTROLLED SEMICONDUCTOR DEVICE AND CONTROL UNIT USING THE SAME - The present invention aims to provide a current-controlled semiconductor device which corrects fluctuations of both gain and offset of a current detection circuit to thereby enable high-accuracy current detection within a single-chip IC, and a control unit using the same. | 05-05-2011 |
| 20110106335 | MICROCONTROLLER, CONTROL SYSTEM AND DESIGN METHOD OF MICROCONTROLLER - Two data processing units having the same function, one of which is used for a master and the other for comparison, are provided, control of a circuit unit is performed by the master, the master data processing unit and the circuit unit are operated in synchronization with a first clock signal, the second data processing unit is operated in synchronization with a second clock signal having the same cycle and different phase from the first clock signal, and processing results of both the data processing units are compared in a comparison circuit. Flip flops are disposed on a signal path from the circuit unit to the comparison data processing unit and on a signal path from the master data processing unit to the comparator, and both the first and second clock signals are used for latch clocks of the flip flops in accordance with input signals thereof. | 05-05-2011 |
