Abstract:
본 발명은 부하 구동신호 연동형 고전압 구동방법에 관한 것으로서, 입력 전원을 승압하여 미리 설정된 크기의 출력 전원 전압을 생성하는 단계, 상기 생성된 출력 전원 전압이 부하 구동회로의 출력 신호에 연동하도록 상기 출력 전원전압을 변환하는 단계 및 상기 변환된 출력 전원전압을 상기 부하 구동회로에 인가하여 부하를 구동하는 단계를 포함하는 것을 특징으로 한다. 상기와 같은 본 발명에 따르면, 배터리의 전압 또는 저전압 정류 전원을 고전압으로 변환하여 부하를 구동하는 휴대형 전자기기에서 배터리의 전력 소비를 최소화하는 것이 가능하여 햅틱 단말기 등과 같이 고전압의 사용이 요구되는 기기 또는 기능의 사용이 보다 활성화될 수 있는 효과가 있다.
Abstract:
PURPOSE: A touch detecting device using a constant current source in a capacitance touch panel and a method thereof are provided to maintain transparency and prevent performance degradation of touch sensitivity in a state that a sheet resistance value of a touch screen panel is big. CONSTITUTION: A touch screen panel(100) arranges a driving electrode functioning a transmitter and a sensing electrode functioning a receiver as an orthogonal coordinates system form and forms electrode patterns. A constant current source supplying unit(200) applies a current to the driving electrode as an excitation signal. A capacitance measuring unit(300) senses capacitance changed in the electrode patterns through the sensing electrode. The constant current source supplying unit supplies set current quantity within set time without a resistance value of a sheet of the touch screen panel and applies a fixed current capable of charging desired electric charge quantity. [Reference numerals] (100) TSP; (200) Constant current source supplying unit; (300) Capacitance measuring unit; (310) Integrator; (400) Output circuit unit
Abstract:
PURPOSE: An electronic pickpocket preventing RFID tag or personal information storing device with an NFC(Near Field Communication) tag is provided to activate RFID/NFC tags by an intention of a user through a switching unit and enable the RFID/NFC tags to communicate with RFID/NFC readers. CONSTITUTION: A switching unit(120) is connected to an RFID(Radio Frequency Identification System) tag(110). The switching unit turns power supply to an RFID chip on/off. The switching unit is turned on/off by a touch of a user. A touch screen includes a touch area which turns the switching unit on/off. When the switching unit is turned on, a terminal power source(113) supplies power to an RFID chip(111).
Abstract:
PURPOSE: A high voltage amplifier circuit for minimizing an area is provided to reduce parasitic capacitance by designing a low voltage part within a high voltage amplifier circuit. CONSTITUTION: A low voltage part receives a voltage from an inverting input terminal(T1) and a non-inverting input terminal(T2). A high voltage part outputs an amplified voltage through an output terminal(T3) by amplifying the voltage inputted into the low voltage part. A voltage isolating part is connected between the low voltage part and the high voltage part. The voltage isolating part isolates the voltage of the low voltage part and the voltage of the high voltage part. The low voltage part includes a first transistor(P21) which is connected to a bias current source(C2) and the inverting input terminal and a second transistor(P22) which is connected to the bias current source and a non-inverting input terminal.
Abstract:
PURPOSE: A spread spectrum type noise removing method for removing noise by modulating the phase of a touch input signal is provided to insert different delay time during sample and hold processes by a control unit, thereby extending hold time as much as the delay time. CONSTITUTION: A control unit sets delay time between sampling time and holding time(S100). The control unit receives an analog touch signal from a touch panel through a sampling circuit(S200). The control unit inserts the set delay time when the sampling circuit periodically samples and holds data according to a set time interval about the analog touch signal(S300).
Abstract:
PURPOSE: A method for generating haptic effect through variation of sound volume is provided to supply haptic feedback by generating haptic effect according to a change type. CONSTITUTION: Sound data is sampled from an electronic device equipped with a sound signal outputting unit(S100). The sound data is a digital signal which is extracted from an analog signal or a PWM(Pulse Width Modulation) signal. A candidate value is extracted from the sound data(S300). Haptic effect is differentially generated according to variation type(S600).
Abstract:
PURPOSE: A method and a circuit for generating a high voltage are provided to minimize power consumption by generating an output power voltage interlocked with the size of a load driving signal when the high voltage is generated. CONSTITUTION: A high voltage transform unit(10) boosts input power to an output power voltage with a preset size. A sensor(20) senses the output voltage of the high voltage transform unit. A comparison unit(30) compares a power control signal with the voltage sensed by the sensor. A driving controller interlocks the output power voltage of the high voltage transform unit with the output signal of the driving circuit by controlling the operation of the high voltage transform unit according to the output signal of the comparison unit. A power control signal is identical to or correlated to the input signal of the load driving circuit.