A low-power touchpad key wake-up circuit for keyboards

By connecting the key signals of the touch unit to the matrix key rows and columns in the keyboard and using the main control chip to detect the touch key signals, the problem of high power consumption in the keyboard in sleep mode is solved, realizing low-power wake-up function and improving battery life and response speed.

CN224287384UActive Publication Date: 2026-05-26SHENZHEN INATECK TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN INATECK TECH CO LTD
Filing Date
2025-08-08
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing keyboards consume a lot of power in sleep mode and cannot wake up the host via the touch unit, affecting battery life and user experience.

Method used

The key signals of the touch unit are connected to the rows and columns of the matrix keys of the keyboard, so that the main control chip can directly detect the touch key signals, cancel the detection function of the touch chip, and only retain the main control chip to enter the sleep state.

Benefits of technology

The keyboard's overall sleep power consumption has been reduced, improving battery life, reducing signal latency, and resulting in faster response.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a low-power touchpad key wake-up circuit for a keyboard, comprising: a touch unit and a key unit. The key unit includes a main control chip, and the touch unit includes a touch chip and several touch keys. The touch chip is electrically connected to the main control chip, and has a circuit that allows the touch keys to be electrically connected to the main control chip without passing through the touch chip. This utility model reduces the sleep power consumption of the touch chip, thereby reducing the overall sleep power consumption of the keyboard.
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