Input device, input method and keyboard

Abstract

The invention provides an input device. The input device comprises a key module, a capacitance detection module and a control module, wherein the key module receives a physical pressing signal and correspondingly feeds back a capacitance change signal, and the capacitance detection module receives the capacitance change signal from the key module and judges a working state signal of the key module. The control module is used for receiving a judgment result from the capacitance detection module and correspondingly generating an input signal, the key module comprises a key switch and a capacitance circuit which are arranged in series, and the key module responds to an external physical pressing signal and correspondingly adjusts the capacitance value change of the key module. According to the key module, the working state judgment sensitivity of the key module is improved in a mode of connecting the capacitor circuit in series, the requirement for the assembly precision of the key switchis lowered, and the requirement for the product installation difficulty is lowered. Meanwhile, the invention further provides an input method and a keyboard adopting the key module.

Description

technical field [0001] The invention relates to a key switch, in particular to an input device, an input method and a keyboard for capacitive mechanical keys as an input system. Background technique [0002] With the development of modern electronic technology, electronic products have gradually penetrated into people's lives. Various electronic products, such as telephones, mobile phones, laptops, remote controls, etc., accompany people's daily life. [0003] The role played by the input system of the above-mentioned electronic products is particularly important. Currently, the input systems widely used in the industry mainly include mechanical keyboards and capacitive keyboards. [0004] The key module of the mechanical keyboard in the prior art usually adopts the contact principle, relying on the contact conduction of two electrode sheets as a key switch to allow the main control chip to obtain the touch or press of the key, judge the working status of the key module, an...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the technical problem that the capacitive mechanical key input device in the prior art cannot recognize whether the key unit is pressed due to poor contact of the electrode sheet, and the technical problem that the function of the capacitive keyboard is abnormal and the consistency is poor, the present invention provides a In the case of poor chip contact, it can accurately determine whether the key unit is pressed, and the input device and input method have good consistency and reliability.

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