Abstract:
본 발명에서 제안하고 있는 정전용량 터치 패널에서의 스캔 방향 스위칭에 의한 노이즈 제거 방법에 따르면, 정전용량 터치 패널에서의 스캔 방향을 교대로 수행하도록 함으로써 정전용량 터치 패널의 동일 열 혹은 동일 행상에서 발생하는 노이즈를 분산시켜 효과적으로 제거할 수 있다.
Abstract:
본 발명에서 제안하고 있는 터치스크린 패널을 이용한 커패시터 캘리브레이션 방법에 따르면, 커패시터 변화를 측정하는 터치스크린 패널에서 부가회로 없이도 캘리브레이션 진행시에 필요한 입력되는 신호(TX 파형)와 보정신호(TX 반대 파형)만을 터치스크린 패널에 입력하여 캘리브레이션을 진행할 수 있도록 함으로써, 전류 구동회로 및 커패시터를 내장하는 부가회로를 필수로 구비하는 기존에 비해 제품 면적이 줄어들게 되므로 제품의 면적 감소 효과가 크고, 또한 터치스크린 패널의 변화에 큰 영향을 받지 않아 광범위한 터치스크린 패널에서 적용이 가능하다.
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: An electrostatic capacity noise removing apparatus through a random scan method is provided to accurately calculate a touch coordinate value by efficiently filtering a noise. CONSTITUTION: A multiplexing unit(100) controls a scan axis direction and a scan order and outputs conductive capacity of a touch panel to a single output line. An ADC(Analog-Digital Converter)(200) converts the conductive capacity into a digital signal. A controlling unit(300) controls a sequence of a scan channel and a scan start and disperses a noise component of a conductive capacity signal. A data filter(500) removes the noise component from the conductive capacity signal.
Abstract:
PURPOSE: An adaptive noise removing method of touch input is provided to remove a noise from a signal which is inputted to a touch panel by determining a touch area according to the distribution of a CDC value. CONSTITUTION: A processor receives a CDC(Change Data Capture) value from a memory which stores an input signal of a touch panel(S200). The processor sets up a center channel and a neighboring data area(S300). The processor measures the average and standard deviation of a CDC value(S400). The processor determines a state of the center channel as a touch or noise state according to the average and the standard deviation(S500).
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 capacitor calibration method using a touch screen panel is provided to reduce product area by processing calibration without an additional circuit. CONSTITUTION: A calibration signal is inputted to a channel within a specific axis of a touch screen panel(S100). The signal is a square wave(S200). A compensation signal of an inverse square wave is inputted to the other channel.
Abstract:
PURPOSE: A noise removing method by scanning direction switching of an electrostatic capacitive touch panel is provided to efficiently remove noise which generates on the same row or the same column by converting a scanning direction. CONSTITUTION: Electrostatic capacitive is measured by scanning to a first scanning direction(S100). The electrostatic capacity is measured by scanning to a second scanning direction which crosses with the first scanning direction(S200). The scanning direction is switched into the second scanning direction(S300). Predetermined filtering is applied to the measured electrostatic capacity.