Patent application number | Description | Published |
20130047727 | DRIVING CIRCUIT, SYSTEM, AND DRIVING METHOD FOR GYRO SENSOR - Provided is a driving circuit, system, and driving method for a gyro sensor. The gyro sensor driving circuit includes a charge/voltage conversion unit receiving a charge output from a vibration-type gyro sensor and converting the charge output into a voltage signal; a phase converting unit receiving a signal from the charge/voltage converting unit and converting a phase of the received signal; a pulse generating unit receiving an output signal of the phase converting unit and outputting the output signal as a pulse wave; a pulse converting unit converting the pulse wave output from the pulse generating unit into a pulse signal using a certain voltage level as reference so as to apply the pulse wave as a driving signal; and a control unit controlling the pulse converting unit to generate the pulse signal using the certain voltage level as reference. | 02-28-2013 |
20130057084 | HALL PLATE SWITCHING SYSTEM - Disclosed herein is a hall plate switching system including: a hall plate that generates first hall voltage at both ends of a first node and a third node facing each other and generates second hall voltage at both ends of a second node and a fourth node facing each other; a first switch unit that is connected with the first node and the second node and controls on/off of current flowing in the first node and the second node; a second switch unit that is connected with the third node and the fourth node and controls on/off of current flowing in the third node and the fourth node; and a resistor unit that is connected with the second switch unit and reduces trans-conductance of the first switch unit and the second switch unit. | 03-07-2013 |
20130082751 | CONTINUOUS SIGNAL GENERATOR - Disclosed herein is a continuous signal generator including: a synchronization circuit generating a synchronized clock signal; a signal source supplying a clock signal to the synchronization circuit; and a switch unit connected between the synchronization circuit and the signal source and selectively switched so as to allow the clock signal output from the signal source to be input to the synchronization circuit or feed back a clock signal output from the synchronization circuit to input the clock signal to the synchronization circuit. | 04-04-2013 |
20130249526 | CONSTANT VOLTAGE GENERATING CIRCUIT AND CONSTANT VOLTAGE GENERATING METHOD - Disclosed herein are a constant voltage generating circuit and a constant voltage generating method. According to an embodiment of the present invention, the constant voltage generating circuit includes a voltage distribution unit performing voltage drop on a variable input power, a reference voltage and register bit generation unit outputting a band gap reference voltage and register bit, a comparison control unit comparing an input voltage dropped in the voltage distribution unit and the band gap reference voltage output from the reference voltage and register bit generation unit, and controlling the reference voltage and register bit generation unit or a constant voltage generation unit in accordance with the compared result, and a constant voltage generation unit receiving the variable input power by an operation of a switch corresponding to the register bit to thereby output a constant voltage, in accordance with the control of the comparison control unit. | 09-26-2013 |
20130278233 | LDO (LOW DROP OUT) HAVING PHASE MARGIN COMPENSATION MEANS AND PHASE MARGIN COMPENSATION METHOD USING THE LDO - Disclosed herein are an LDO having a phase margin compensation means and a phase margin compensation method using the same. The phase margin compensation method according to an exemplary embodiment of the present invention includes: outputting, by reference voltage generation unit, reference voltage Vout | 10-24-2013 |
20130320899 | BIASING CIRCUIT FOR HALL SENSOR AND HALL AMPLIFIER IN MOTOR DRIVING CIRCUIT - Disclosed herein are a biasing circuit for a hall sensor and a hall amplifier in a motor driving circuit, the biasing circuit including: a regulator installed inside a singled packaged chip, supplied with external power, and regulating the external power in voltage appropriate for a circuit to supply the regulated voltage; the hall amplifier supplied with the voltage regulated from the regulator, receiving an output signal from the hall sensor outside the chip, and amplifying the output signal to output the amplified signal; first and second resistors supplied with the voltage from the regulator to generate an input voltage common mode (VCM) of the hall amplifier; and third and fourth resistors supplied with the voltage from the regulator to generate an input VCM of the hall sensor. | 12-05-2013 |
20140028233 | MOTOR DRIVE OVERCURRENT BLOCKING CIRCUIT, MOTOR DRIVING CIRCUIT AND METHOD FOR BLOCKING OVERCURRENT THEREOF - The present invention relates to a motor drive overcurrent blocking circuit, a motor driving circuit, and a method for blocking an overcurrent in a motor driving circuit. The motor drive overcurrent blocking circuit includes: a motor driving unit switched according to a driving control signal to drive a motor; an overcurrent sensing unit connected between a lower end of the sink switching element group and a ground to sense a current flowing in the turned-on switching element of the sink switching element group in the sensing terminal; and an overcurrent blocking unit turned on according to a voltage due to an overcurrent sensed by the overcurrent sensing unit and blocking the overcurrent by sinking the driving control signal applied to the turned-on switching element of the sink switching element group to the ground is provided. | 01-30-2014 |
20140028234 | MOTOR DRIVE OVERCURRENT DETECTING CIRCUIT, MOTOR DRIVING CIRCUIT WITHOUT HEADROOM VOLTAGE LOSS, AND METHOD FOR DETECTING OVERCURRENT IN MOTOR DRIVING CIRCUIT - The present invention relates to a motor drive overcurrent detecting unit, a motor driving circuit without a headroom voltage loss, and a method for detecting an overcurrent in a motor driving circuit. The motor drive overcurrent detecting circuit includes: a motor driving unit switched according to a driving control signal to drive a motor; a sensing unit for distributing a sensing current from the current flowing through the motor according to turn-on of a distribution switching element and sensing the distribution current through a sensing resistor; and an on-resistance maintaining unit for maintaining on-resistance of the turned-on distribution switching element by turning on the distribution switching element. Further, a motor driving circuit without a headroom voltage loss and a method for detecting an overcurrent in a motor driving circuit are provided. | 01-30-2014 |
20140028360 | POWER ON RESET DEVICE AND POWER ON RESET METHOD - Disclosed herein are a power on reset device capable of performing a precise brown out detection (BOD) function and a power on reset method using the same. The power on reset device may include a delay signal generating unit, a reference voltage generating unit, and a reset signal generating comparing a delay signal with a reference voltage to generate a reset signal. | 01-30-2014 |
20140035690 | VOLTAGE CHANGE COMPENSATION TYPE OSCILLATOR AND METHOD OF COMPENSATING ERROR OF OSCILLATOR - The present invention relates to a voltage change compensation type oscillator and a method of compensating an error of an oscillator, which includes a voltage level detecting unit; a current level adjusting unit; and an oscillating core unit for generating and outputting a clock signal by receiving a power supply voltage and an output current of the current level adjusting unit, wherein the current level adjusting unit adjusts the output current in proportion to an increase of the voltage level detected by the voltage level detecting unit, thus remarkably reducing a frequency error of the clock signal in spite of changes in voltage. | 02-06-2014 |