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Fujio Kurokawa

Fujio Kurokawa, Nagasaki-Shi JP

Patent application numberDescriptionPublished
20100135046PREDICTIVE CONTROL SYSTEM - The first sampling measurement value compares whether to exceed a prescribed threshold and judges the control part at the sampling time. The control part compares whether the first sampling measurement value exceeds a prescribed threshold. When the actual measurement value doesn't exceed a prescribed threshold, the control part predict the first sampling value at the next sampling time. [1] When the first sampling the predicting value doesn't exceed the threshold value, the status of the switch is maintained, [2] When the first sampling the predicting value exceeds the threshold value, the time when the movement of the switch should be changed is calculated and the status of the switch is changed at time concerned.06-03-2010
20100253408TIMING GENERATING CIRCUIT AND PHASE SHIFT CIRCUIT - There are provided a timing generating circuit which can generate the rising edge or the falling edge of pulses with a resolution higher than the frequency of a repeat signal generating circuit, and a phase shift circuit which can be applied to the timing generating circuit. The phase shift circuit receiving a repeat signal generates a signal of which a phase is shifted by a predetermined quantity on the basis of the repeat signal, the phase shift controller controls what phase of signal the phase shift circuit output among first to M-th signals, and the counter circuit counts the number of output signals of the phase shift circuit and generates a count end signal when the count value reaches a set value, and thereby the counter circuit outputs a synthesized timing signal of the timing of the repeat signal and the timing shifted by the phase shift circuit.10-07-2010
20100264839LOAD CONTROL DEVICE, AND LIGHTING DEVICE - Provided is a discharge lamp lighting device, which can control a load precisely while improving the practicability. When the difference of a count number (Nn) becomes a predetermined threshold value or less, a predictor circuit (10-21-2010
20100271096WAVEFORM PROCESSING CIRCUIT - A rising edge or a falling edge is finely adjusted, or a dead time and a period are adjusted with high accuracy. A waveform processing circuit includes: an integration circuit 10-28-2010
20100277956CONTROL APPARATUS OF POWER CONVERTER CIRCUIT - To detect a peak time of an exciting current of a transformer, a primary current corresponding to the peak time, or a variation time of the primary voltage, and to switch a switch after expiration of a predetermined period from the peak time, after the peak time occurs. A control apparatus 11-04-2010

Fujio Kurokawa, Nagasaki JP

Patent application numberDescriptionPublished
20090167393POWER CONVERSION CONTROL CIRCUIT, POWER CONVERSION CONTROL LSI, DIFFERENTIAL DETECTION CIRCUIT, AND PULSE WIDTH CONTROL SIGNAL GENERATION CIRCUIT - The control accuracy equal with the case controlled according to a reference signal with a high clock frequency when the electric power is converted is obtained according to a reference signal with a low clock frequency.07-02-2009
20090219055Signal Comparison Circuit and Power Conversion Device - The voltage deviation is converted into the time quantity with the first integration circuit for the voltage detection and the second integration circuit for the voltage detection. The current setting value and the current measurements are converted into the time quantity with the second integration circuit for the current control to which the first integration circuit for the current control from which the voltage value of the set current value corresponding is input and the voltage value of the value of the current of the inductor corresponding are input and it controls. And, the start of the first integration circuit for the current control is delayed with operation quantity signal generation circuit only at the time that the high-resolution evaluation or more than the start of the first integration circuit for the current control and corresponds to the voltage deviation.09-03-2009
20090267820ANALOG/DIGITAL, CONVERSION CIRCUIT, TIMING SIGNAL GENERATION CIRCUIT, AND CONTROL DEVICE - There are provided an analog-digital converter circuit capable of performing the same degree of operation as being performed at a high-frequency oscillation pulse using a low-frequency oscillation pulse without using the high-frequency oscillation pulse, a timing signal generating circuit generating a timing signal at the high frequency, and a control device using the circuits. In an analog-digital converter circuit, a periodic signal generating circuit allows the first to j-th pulse counting devices of the N pulse counting devices to count a count value X and allows the other pulse counting devices to count a count value X−1 in each sampling period by sequentially generating N serial periodic signals at a delay time interval of [approximate value of one period (T) of periodic signals]÷N. A digital signal generating circuit converts the analog signal to the digital signal.10-29-2009