Noriaki Matsuno
Noriaki Matsuno, Kanagawa JP
Patent application number | Description | Published |
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20090187688 | INFORMATION STORAGE DEVICE, INFORMATION PROCESSING SYSTEM, AND SETTING METHOD OF DATA TRANSFER MODE OF INFORMATION PROCESSING DEVICE - An information storage device includes a storage that stores transfer data from an information processing device, the information storage device being removably connected to the information processing device, a switch unit that switches a data transfer mode of the information processing device in accordance with manipulation by a user, and a controller that controls the information processing device to transfer data in a mode in which data temporarily stored in a data storing area is transferred to the storage or in a mode in which data is transferred to the storage without being temporarily stored in the data storing area in accordance with the selection of the data transfer mode by the switch unit. | 07-23-2009 |
20090261881 | Signal processing device having a variable current source - A signal processing device suppresses a DC offset without omission of a low-frequency component of a signal in a receiver in a direct conversion system. The signal processing device includes an input terminal | 10-22-2009 |
20090289724 | FREQUENCY SYNTHESIZER AND METHOD FOR CONTROLLING SAME - A frequency synthesizer includes compensation variable capacitance diodes | 11-26-2009 |
20100253424 | AMPLIFYING DEVICE AND ITS CONTROL METHOD - An amplifying device comprises a first amplifying unit ( | 10-07-2010 |
20100264943 | Resistance variation detection circuit, semiconductor device and resistance variation detection method - A circuit for detecting variation of a resistance value of a resistor with respect to a reference value includes a first resistor; a second resistor; a first current source circuit for supplying current to the first resistor; a second current source circuit for supplying current to the second resistor; a voltage comparator circuit for comparing a voltage across the first resistor and a voltage across the second resistor; and a control circuit for digitally adjusting the supply current of at least one of the first or second current source circuit. A ratio of resistance values of the first and second resistors can be obtained from an adjustment value from the control circuit and result of comparison from the voltage comparator circuit. | 10-21-2010 |
20100301910 | Frequency synthesizer - A frequency synthesizer comprises a VCO group; a phase comparator; and a loop filter. Each VCO includes a varactor and a capacitor bank including a plurality of weighted capacitance elements, and a plurality of switches turned ON and OFF based on a control signal. Also provided a temperature compensation including a varactor correction potential generation circuit, a correction potential generation circuit for parasitic capacitance of the capacitor bank, a variable gain amplifier in which weighting processing, based on a control signal of the capacitor bank, is performed on an output potential of the correction potential generation circuit, and an adder circuit that adds the output voltage of the correction potential generation circuit of the varactor and output voltage of the variable gain amplifier, and the varactor of the VCO is controlled by output (correction potential) of the adder circuit. | 12-02-2010 |
20110085625 | RECEIVER AND SEMICONDUCTOR DEVICE - A receiver includes an automatic gain control (AGC) loop and a filter group that is arranged downstream of the AGC loop. The filter group includes an active filter. The receiver further includes a power difference detector and a switch circuit. The power difference detector detects a power difference between intermediate and output nodes of the filter group to detect presence of an interference wave that is different from a desired wave and that has a frequency near that of the desired wave. The switch circuit switches an operation to suppress a convergence power of the AGC loop when the power difference detector detects the interference wave. | 04-14-2011 |
20130196607 | LEVEL SHIFT CIRCUIT - A level shift circuit includes a first pair of transistors of the first conductive type (M | 08-01-2013 |
20140015091 | SEMICONDUCTOR DEVICE, METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE, AND SOI SUBSTRATE - Provided is a semiconductor device showing stable high-frequency characteristics. | 01-16-2014 |
20140253191 | SEMICONDUCTOR DEVICE AND WIRELESS COMMUNICATION DEVICE - To realize an optimal power-on reset in a system in which the rise of the power supply voltage is sharp. | 09-11-2014 |
20150087247 | SEMICONDUCTOR DEVICE AND WIRELESS COMMUNICATION DEVICE - To realize an optimal power-on reset in a system in which the rise of the power supply voltage is sharp. | 03-26-2015 |
Noriaki Matsuno, Tokyo JP
Patent application number | Description | Published |
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20090174456 | DC Offset Correcting Device And DC Offset Correcting Method - A signal generator generates a test signal including a positive signal and a negative signal which have the same amplitude. The signal generator corrects a DC level of the test signal based on a DC offset correcting signal supplied thereto, and supplies the corrected test signal to a frequency converter. An amplitude detector detects the amplitudes of the positive and negative signals of the test signal processed by the frequency converter. A level compressor converts in level the amplitudes of the positive and negative signals which are detected by the amplitude detector, with a gain variable depending on an input level thereto. A comparator compares the amplitudes of the positive and negative signals which are converted in level by the level compressor, with each other. An offset adjuster supplies the DC offset correcting signal depending on a compared result from the comparator to the signal generator. | 07-09-2009 |
20090289699 | Output conductance automatic regulation circuit of differential current output type circuit and filter circuit - Output conductance of a differential current output type circuit constituting a filter body ( | 11-26-2009 |
20100198540 | SIGNAL PROCESSING APPARATUS AND SIGNAL PROCESSING METHOD - An apparatus includes a test signal generation unit supplying test signals to an orthogonal modulator and a control unit that based on a result of decision by comparison and decision of detection results of a detector detecting envelopes of modulated signals output from the orthogonal modulator responsive to the test signals, derives adjustment values and a compensation value. An estimation means estimates a DC offset and an IQ mismatch of the orthogonal modulator, based on the derived compensation value. The test signals includes a first set including a first test signal (I | 08-05-2010 |
20100239056 | SIGNAL PROCESSING CIRCUIT - A test signal generating part ( | 09-23-2010 |
Noriaki Matsuno, Minato-Ku JP
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20100195706 | SIGNAL PROCESSING CIRCUIT AND SIGNAL PROCESSING METHOD - A signal processing circuit for compensating for an I/Q amplitude mismatch in which the amplitudes of I- and Q-components of output signals of a quadrature modulator are unequal to or for compensating for an I/Q phase mismatch in which the phase difference between the I- and the Q-components of output signals of the quadrature modulator deviates from 90 degrees. The signal processing circuit comprises an I/Q mismatch compensating part that corrects the amplitude or phase of an input signal based on the compensation amount for compensating for an I/Q amplitude mismatch or an I/Q phase mismatch and that inputs the corrected signal into a quadrature modulator; a test signal generating part that sequentially generates and inputs two sets of combined I- and Q-components of a test signal, which is an AC signal, to the I/O mismatch compensating part; a detector that determines an amplitude of the envelope of an output signal of the quadrature modulator; a filter that passes those ones of output signals of the detector which have frequencies equal to or lower than a cutoff frequency; and a control part that derives an amplitude or phase compensation amount of the I/Q mismatch compensating part such that the output values of the filter at the time of generating the two respective sets of test signals are equal to each other, the control part then inputting the derived amplitude or phase compensation amount into the I/Q mismatch compensating part. | 08-05-2010 |
Noriaki Matsuno, Kawasaki JP
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20090245454 | SIGNAL PROCESSING DEVICE - A signal processing device includes a detecting part that detects intensity of an input signal, a timer part that includes a time constant circuit and measures time based on a time constant of the time constant circuit, and a determination circuit that counts the number of times of switching of the input signal detected by the detecting part within the time measured by the time constant circuit. | 10-01-2009 |
Noriaki Matsuno, Hyogo JP
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20080252282 | REFERENCE CURRENT CIRCUIT - Provided is a reference current circuit able to reduce temperature dependence of the reference current even in a case of using a resistor with extremely low temperature-dependent resistance. The reference current circuit comprises a non-inverting amplifier circuit | 10-16-2008 |
20090121700 | CONSTANT VOLTAGE CIRCUIT - An inverse temperature characteristic generating circuit decreases an output voltage V | 05-14-2009 |
20110313698 | VOLTAGE POLARITY DETERMINATION CIRCUIT AND CHARGE AMOUNT MEASUREMENT CIRCUIT - A voltage polarity determination circuit includes an integration circuit, a switch, and a time measurement circuit. The integration circuit includes an operational amplifier circuit having an input offset voltage which is larger than the maximum value of a voltage input to the integration circuit or smaller than the minimum value of the input voltage of the integration circuit. The switch switches the input voltage of the integration circuit between a voltage whose polarity is to be determined and a reference voltage. The time measurement circuit measures a time interval which it takes for the output voltage of the integration circuit to reach a set voltage, and based on the result of the measurement, determines the polarity of the input voltage of the integration circuit. | 12-22-2011 |
Noriaki Matsuno, Kawasaki-Shi JP
Patent application number | Description | Published |
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20140118053 | HIGH FREQUENCY SWITCH CIRCUIT - N (n is an integer more than one) number of transistors are connected in series in an order from a first transistor to an n | 05-01-2014 |