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Signal generating circuit of active pen, active pen and coding method

A signal generation circuit and active technology, applied in the signal generation circuit of the active pen, the field of active pen and coding, can solve the problem of high power consumption of the active pen for coding

Active Publication Date: 2020-08-28
SHENZHEN GOODIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technical solution, under certain coding effects, the coding power consumption of the active pen is relatively large

Method used

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  • Signal generating circuit of active pen, active pen and coding method
  • Signal generating circuit of active pen, active pen and coding method
  • Signal generating circuit of active pen, active pen and coding method

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Embodiment Construction

[0047] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of the present application, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application shall fall within the protection scope of the embodiments of the present application.

[0048] figure 1 Shown is a diagram of an application scenario where the active pen 101 is commonly used in conjunction with a terminal device 104 with a touch screen. The active pen 101 is used to write or input instructions to a terminal device 104, such as a computer screen, a mobile device, a drawing tablet, et...

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Abstract

The embodiment of the present application provides a signal generating circuit of an active pen, an active pen and a coding method, the signal generating circuit includes a power supply unit and a control unit, the power supply unit is used to provide coding voltage for the active pen, and the control unit When the power supply unit only generates a single voltage, it is used to control the pen tip and the pen shell of the active pen to alternately generate positive voltage and negative voltage. The signal generating circuit, the active pen and the coding method of the embodiments of the present application can reduce the coding power consumption of the active pen while ensuring the coding effect.

Description

technical field [0001] The present application relates to the field of touch technology, and more specifically, to a signal generating circuit of an active pen, an active pen and a coding method. Background technique [0002] With the development of touch technology and mobile terminal technology, more and more mobile terminals use touch mode for human-computer interaction. At present, the touch screens used in mobile terminals mainly include capacitive touch screens and resistive touch screens. Among them, capacitive touch screens have gained more and more popularity due to their good clarity, light transmittance and tactility. users' favor. [0003] In addition to direct touch operation with fingers, the capacitive touch screen can also be operated with an active touch stylus (hereinafter referred to as active pen) instead of fingers. At present, when the active pen realizes coding communication with the terminal equipment, its pen shell is connected to the system ground...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/537G06F3/044
CPCG06F3/044H02M7/537G06F3/0442G06F1/325G06F3/03545G06F3/0383G06F3/0412
Inventor 袁广凯
Owner SHENZHEN GOODIX TECH CO LTD