Patent application number | Description | Published |
20080309398 | MULTIPLIER CIRCUIT - A multiplier circuit includes a bias circuit which outputs a reference voltage and a bias signal, a first delay circuit which inputs a input signal and outputs a first delayed signal according to the reference voltage and the bias signal, a second delay circuit which inputs an inversed input signal and outputs a second delay signal according to the reference voltage and the bias signal and an OR circuit which outputs a OR logic result generated with the first and second delayed signals. | 12-18-2008 |
20090009164 | MAGNETO-SENSITIVE INTEGRATED CIRCUIT - A magneto-sensitive integrated circuit which amplifies a magneto-sensitive output voltage of a Hall element by an amplifier to generate an amplified voltage, converts an output voltage of the amplifier into a digital signal by an A/D converter; and generates a reference voltage of magnitude corresponding to an indicated value. The amplifier includes voltage superposition means which superposes a DC voltage corresponding to the reference voltage on the amplified voltage to generate the output voltage of the amplifier. | 01-08-2009 |
20110148472 | VOLTAGE CHANGE DETECTION DEVICE - A voltage change detection device is provided, which can reduce a deviation of a detection potential and can detect a voltage change within a predetermined detection potential even when the threshold voltage of a field effect transistor is deviated. The voltage change detection device includes a first field effect transistor, a second field effect transistor, and a detection signal generator. The first field effect transistor has a drain connected to a power supply potential, a source connected to a first constant current source or a first resistor at a first node, and a gate connected to a fixed voltage. The second field effect transistor has a drain and a gate connected to the power supply potential and a source connected to a second constant current source or a second resistor at a second node. The detection signal generator generates a detection signal indicating that the power supply potential has crossed a predetermined detection potential according to a comparison between a voltage at the first node and a voltage at the second node. | 06-23-2011 |
20110291869 | DETECTING DEVICE - A detecting device has: a detecting element to which a first constant voltage is applied; a resistance element connected to the detecting element; a switching element having a first terminal to the resistance element, a second terminal controlled to a second constant voltage lower than the first constant voltage, and a control terminal sets the first terminal and the second terminal in a conducting state; a control unit, according to a conducting/non-conducting state, controls voltage to the control terminal to maintain a potential difference between the detecting element and the resistance element; and an AD converter converting, into a digital value, a potential of a potential difference between the first constant voltage and the first terminal being voltage-divided at the detecting element and the resistance element to the detecting element, a first reference potential is the first constant voltage, and a second reference potential is voltage to the first terminal. | 12-01-2011 |
20120086387 | CHARGING CONTROL SYSTEM AND DEVICE - A charging control system for charging a secondary battery from a solar battery, including a first path for transmitting power from the solar battery to the secondary battery, a second path for sensing the voltage of the secondary battery, and a comparison unit for comparing the solar battery voltage with the sensed voltage of the secondary battery. The first path includes a first interrupter, controlled by the comparison unit, which interrupts the first path to prevent discharge of the secondary battery through the solar battery when the solar battery voltage falls below the secondary battery voltage. The second path includes a second interrupter that interrupts the second path after the first path is interrupted, to prevent the secondary battery from discharging through the second path when not being charged through the first path. | 04-12-2012 |
20120133040 | SEMICONDUCTOR CHIP AND SOLAR SYSTEM - There is provided a semiconductor chip having four sides and being substantially formed in a rectangle, the semiconductor chip including: a first terminal which is located along one side of the four sides of the semiconductor chip and which is to be electrically connected to a solar cell outside the semiconductor chip; a second terminal which is located along the one side of the semiconductor chip and which is to be electrically connected to a secondary cell outside the semiconductor chip; and an interconnection line that electrically interconnects the first terminal and the second terminal. | 05-31-2012 |
20120194105 | VOLTAGE DETERMINATION DEVICE AND CLOCK CONTROL DEVICE - A voltage determination device includes a reference voltage generation circuit; a determination target voltage line; a first voltage line; a second voltage line; and a switching circuit disposed between the first voltage line and the second voltage line. The switching circuit is provided for performing a switching operation according to a level of the determination target voltage. The voltage determination device includes a determining circuit for determining the level of the determination target voltage, and a control unit is provided for controlling a level of an electric current flowing between the first voltage line and the second voltage line. The control unit controls a resistivity between the switching circuit and the second voltage line so that the level of the electric current is maintained at a specific level when the determining circuit determines the level of the determination target voltage. | 08-02-2012 |
20140097872 | VOLTAGE CHANGE DETECTION DEVICE - A voltage change detection device, which reduces a deviation of a detection potential and detects a voltage change within a predetermined detection potential even when the threshold voltage of a field effect transistor is deviated. The voltage change detection device includes a first field effect transistor, a second field effect transistor, and a detection signal generator. The first field effect transistor has a drain connected to a power supply potential, a source connected to a first constant current source or a first resistor at a first node, and a gate connected to a fixed voltage. The second field effect transistor has a drain and a gate connected to the power supply potential and a source connected to a second constant current source or a second resistor at a second node. The detection signal generator generates a detection signal indicating that the power supply potential has crossed a predetermined detection potential. | 04-10-2014 |
20140184138 | SEMICONDUCTOR CHIP AND SOLAR SYSTEM - There is provided a semiconductor chip having four sides and being substantially formed in a rectangle, the semiconductor chip including: a first terminal which is located along one side of the four sides of the semiconductor chip and which is to be electrically connected to a solar cell outside the semiconductor chip; a second terminal which is located along the one side of the semiconductor chip and which is to be electrically connected to a secondary cell outside the semiconductor chip; and an interconnection line that electrically interconnects the first terminal and the second terminal. | 07-03-2014 |
20140232321 | CHARGING CONTROL SYSTEM AND DEVICE - A charging control system for charging a secondary battery from a solar battery, including a first path for transmitting power from the solar battery to the secondary battery, a second path for sensing the voltage of the secondary battery, and a comparison unit for comparing the solar battery voltage with the sensed voltage of the secondary battery. The first path includes a first interrupter, controlled by the comparison unit, which interrupts the first path to prevent discharge of the secondary battery through the solar battery when the solar battery voltage falls below the secondary battery voltage. The second path includes a second interrupter that interrupts the second path after the first path is interrupted, to prevent the secondary battery from discharging through the second path when not being charged through the first path. | 08-21-2014 |