A single contact induction positioning method and device
An induction positioning, single-contact technology, applied in the fields of instruments, computing, electrical digital data processing, etc., can solve the problems of inappropriate single-layer jumperless ITO touch screen, high power consumption, and achieve low power consumption, high precision, and high resistance. Interfering effects
Inactive Publication Date: 2015-12-02
NATIONZ TECH INC
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[0002] In current touch sensing applications, single-point detection generally adopts a double-layer self-capacitance screen structure, for example, Cypress's CSD (CapSenseDelta-Sigma), CSA (CapSenseApproximating), CSR (CapSenseRelaxationOscillator), Atmel's Qtouch technology, etc. It has mature and reliable advantages, but these technologies are only applied to double-layer self-capacitance screens, not suitable for single-layer ITO touch screens without jumpers, and these technologies are due to the use of ADC (Analog-to-DigitalConverter, analog / digital conversion device), resulting in generally high power consumption
At present, there is no better solution for the single-contact sensing positioning technology for single-layer jumper-free ITO touch screens. The solution for single-contact sensing positioning technology for single-layer jumper-free ITO touch screens is a current touch positioning technology. important research directions
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[0037] The invention proposes a single-contact induction positioning method applied to touch recognition devices such as single-layer jumper-free ITO touch screens. The method includes: applying pulse excitation signals to each input end of the touch recognition device; The row delay signal and the column delay signal when the touch recognition device is not touched, the row delay signal and the column delay signal when the touch recognition device is touched; the position of the contact is determined according to the row delay signal and the column delay signal.
[0038] Wherein, determining the position of the contact according to the row delay signal and the column delay signal can be specifically as follows:
[0039] Calculate the time difference between the row delay signal when the touch recognition device is touched and the row delay signal when it is not touched, and the time difference between the column delay signal when the touch recognition device is touched and the...
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The invention relates to a single-contact inductive locating method and a single-contact inductive locating device. The single-contact inductive locating method is applicable to a touch recognition device, such as single-layer wire-jumper-free ITO touch screens and the like. The single-contact inductive locating method comprises the following steps: pulse excitation signals are applied to input terminals of the touch recognition device; a row delayed signal and a line delayed signal when the touch recognition device is not touched and a row delayed signal and a line delayed signal when the touch recognition device is touched are detected at each output terminal respectively; and the touch point is located according to the row delayed signals and the line delayed signals. The single-contact inductive locating method and the single-contact inductive device are applicable to the touch recognition device, such as the single-layer wire-jumper-free ITO touch screens and the like and has the advantages of high precision, strong interference resistance and low power consumption.
Description
technical field [0001] The invention relates to touch positioning technology, in particular to a single-contact induction positioning method and device. Background technique [0002] In current touch sensing applications, single-point detection generally adopts a double-layer self-capacitance screen structure, for example, Cypress's CSD (CapSenseDelta-Sigma), CSA (CapSenseApproximating), CSR (CapSenseRelaxationOscillator), Atmel's Qtouch technology, etc. It has mature and reliable advantages, but these technologies are only applied to double-layer self-capacitance screens, not suitable for single-layer ITO touch screens without jumpers, and these technologies are due to the use of ADC (Analog-to-DigitalConverter, analog / digital conversion device), resulting in generally high power consumption. At present, there is no better solution for the single-contact sensing positioning technology for single-layer jumper-free ITO touch screens. The solution for single-contact sensing p...
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IPC IPC(8): G06F3/041
Inventor 梁洁律博苏建华王莹莹韩路栾昌海
Owner NATIONZ TECH INC