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Electronic device with touch function

A touch device and touch signal technology, applied in electrical digital data processing, data processing input/output process, instruments, etc., can solve problems such as extra circuits and time, save hardware costs, save processing time, The effect of signal transmission simplification

Active Publication Date: 2018-01-02
HIMAX TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in order to determine the touch position information or pressure information, the stylus needs to transmit two different signals, and processing these signals requires additional circuits and time

Method used

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  • Electronic device with touch function
  • Electronic device with touch function
  • Electronic device with touch function

Examples

Experimental program
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Embodiment Construction

[0057] Embodiments of the invention are discussed in detail below. It should be appreciated, however, that the embodiments provide many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments discussed are illustrative only, and do not limit the scope of the invention.

[0058] figure 1 It is a schematic diagram illustrating an electronic device 10 with a stylus according to an embodiment of the present invention. The electronic device 10 includes a touch device 100 and a stylus SS. The touch device 100 may be a tablet computer with a display panel, a notebook computer, a desktop computer, a liquid crystal display (Liquid Crystal Display; LCD) or an organic light emitting diode (Organic Light Emitting Diode; OLED) television, a handheld device or a global satellite system (Global Position System; GPS) navigation device, etc., but not limited thereto. The touch device 100 includes a touch sensing region 110 for rec...

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PUM

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Abstract

An electronic device with touch function. The touch device includes a touch sensing area, an analog-to-digital conversion unit, an in-phase multiplier, a quadrature multiplier, an in-phase adder, a quadrature adder and a Pythagorean operation unit. The touch sensing area receives touch signals from the object to generate sensing signals. The analog-to-digital conversion unit converts the sensing signal into a digital signal. The in-phase multiplier and the quadrature multiplier are used to multiply the digital signal by the first reference signal and the second reference signal respectively to generate an in-phase modulation signal and a quadrature modulation signal respectively. The in-phase adder and the quadrature adder are used to add elements in the in-phase modulation signal and in the quadrature modulation signal respectively to generate in-phase values ​​and quadrature values ​​respectively. The Pythagorean operation unit is used to obtain the amplitude value for determining the corresponding sensing pixel based on the in-phase value and the quadrature value.

Description

technical field [0001] The present invention relates to an electronic device, and in particular to an electronic device with a touch function and a related touch device and method. Background technique [0002] Nowadays, more and more electronic devices have a touch function to facilitate users' operations. The touch screen of the electronic device receives a signal from an object, such as a human finger or a stylus, and the control circuit of the electronic device processes the signal to determine touch information, such as touch position information or pressure information. For the known stylus, two types of stylus are widely used, one of which is active (active) stylus, which is used to transmit the touch signal generated by itself and is not controlled by the touch of the electronic device. The other type is a passive stylus, which is used to transmit a touch signal in response to a trigger signal from a touch device. [0003] However, regardless of the type of the sty...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041
CPCG06F3/04162G06F3/0442G06F3/0446
Inventor 黄冠颖张耀光林昌辉
Owner HIMAX TECH LTD
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