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A signal transmitting and receiving method, a processor chip, an active pen and a touch screen

A signal transmission and signal reception technology, applied in the field of signal processing, can solve problems such as affecting the user's touch experience, low reporting rate, long time for coordinate encoding and pressure encoding, etc.

Active Publication Date: 2020-04-03
SHENZHEN GOODIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The inventor found that the existing technology has at least the following problems: in the existing coding method, the coordinate coding and pressure coding take a long time, and the reporting rate is low, which affects the user's touch experience

Method used

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  • A signal transmitting and receiving method, a processor chip, an active pen and a touch screen
  • A signal transmitting and receiving method, a processor chip, an active pen and a touch screen
  • A signal transmitting and receiving method, a processor chip, an active pen and a touch screen

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Embodiment Construction

[0048] In order to make the purpose, technical solution and advantages of the present application clearer, some embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0049] The first embodiment of the present application relates to a signal transmission method, which is applied to an active pen, and the active pen is used to communicate with the touch screen, such as figure 1 Shown is a schematic diagram of the active pen communicating with the touch screen. Wherein, the active pen may be a capacitive active pen.

[0050] The following first introduces the communication method between the active pen and the touch screen.

[0051] The touch screen includes a sensing layer 11, a touch controller 12, and a multiplexe...

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Abstract

Some embodiments of the invention provide a signal transmitting and receiving method, a processor chip, an active pen and a touch screen. The signal transmitting method comprises: obtaining, accordingto detected pressure information, a code representing the pressure information and pen point position detection, the code comprising n code bits, n being an integer greater than 1 (101); generating ncoding signals corresponding to the n code bits (102); transmitting each coding signal in the n coding signals at a preset first frequency or a preset second frequency, wherein the first frequenciesand the second frequencies of the n coding signals are related to the pressure information (103). By the adoption of the scheme, the active pen can output more coordinates of the pen point position inunit time, the touch screen can detect more coordinates of the pen point position in unit time, and the point reporting rate is increased.

Description

technical field [0001] The present application relates to the technical field of signal processing, in particular to a signal transmitting and receiving method, a processor chip, an active pen, and a touch screen. Background technique [0002] With the popularity of capacitive touch screens, the application of capacitive active pens is becoming more and more extensive. When the user uses the capacitive active pen, the capacitive touch screen detects the coding signal of the screen body and the coding signal of the active pen in time-sharing; among them, the screen body detection time of the capacitive touch screen is a key factor affecting the reporting rate of the active pen. The higher the rate, the faster the screen responds to the writing of the active pen. With the improvement of users' requirements for the writing experience and touch experience of the active pen, the requirements for the reporting rate of the active pen are also getting higher and higher. [0003] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044G06F3/041G06F3/0354
CPCG06F3/044G06F3/0414G06F3/0416G06F3/03545
Inventor 梁启权
Owner SHENZHEN GOODIX TECH CO LTD
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