A control method of an electronic device and an electronic device

By acquiring touch signals and transmitting uplink synchronization signals after scanning S rows of pixels in the display driver circuit of the electronic device, the problem of stylus disconnection during screen frame rate switching is solved, and the stability and continuity of stylus input are achieved.

CN122152152APending Publication Date: 2026-06-05HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Filing Date
2022-05-13
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

When the screen refresh rate of an electronic device changes, stylus input is prone to interruptions, especially when the screen refresh rate changes from 120Hz to 90Hz. This makes it difficult to align the timing of the touchscreen and stylus, resulting in discontinuous input.

Method used

By acquiring a touch signal once every S rows of pixels after scanning the display driver circuit of the electronic device, and taking the N consecutively acquired signals as a group, an uplink synchronization signal is transmitted in the Kth acquisition time slot of each group to align with the stylus and negotiate downlink parameters to ensure the downlink signal timing of the stylus is aligned.

Benefits of technology

It effectively reduces the probability of stylus input disconnection on electronic devices, improves user experience, and ensures the continuity and stability of input.

✦ Generated by Eureka AI based on patent content.

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Abstract

A control method of an electronic device, which can be applied to an electronic device with a touch screen, the electronic device being provided with a display driving circuit and a touch sensor matched with the touch screen, the method comprising: the display driving circuit performing pixel scanning; the touch sensor collecting a touch signal each time the display driving circuit scans S rows of pixels, S >= 1; wherein N times of continuously collected touch signals are taken as a group, and an uplink synchronization signal is transmitted to the outside in the time slot of the Kth time of collecting the touch signal in each group, 1 <= K <= N, the uplink synchronization signal being used for time alignment with an external device. In this way, no matter how the frame rate of the touch screen of the electronic device changes, the time of collecting the touch signal of the electronic device is fixed each time, so as not to affect the collection of the downlink signal of the handwriting pen, reduce the probability of handwriting pen disconnection, and improve the user experience.
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