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Method for restoring non-triggering of capacitor key

A repair method and button technology, applied in electrical components, electronic switches, response errors, etc., can solve problems such as capacitive buttons not triggering, and achieve the effect of a simple method

Inactive Publication Date: 2013-12-18
FUJIAN LANDI COMML EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a repair method for the non-triggering of the capacitive key, which can solve the problem of the non-triggering of the capacitive key

Method used

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  • Method for restoring non-triggering of capacitor key

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0012] The present invention provides a method for repairing the failure of a capacitive button, which is characterized in that: when the capacitive button has a button response, after the MCU processes and reads the value of the button, the MCU resets the capacitive button chip within a predetermined period of time, and releases the The IIC port line connected to the capacitive button chip.

[0013] Preferably, in this embodiment, the predetermined time is 100 MS. Resetting the capacitive button chip within this level of time can ensure that the continuous input of the button will not be affected. Moreover, the release of the IIC port line can prevent the capacitive button chip from being too heavy and unresponsive.

[0014] In this embodiment, the capacitive key is a capacitive key of an electronic payment terminal. In the field of electronic payme...

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Abstract

The invention relates to a method for restoring non-triggering of a capacitor key. The method is characterized in that when a key response of the capacitor key is available, and after a micro-controller unit (MCU) processes and reads a key value completely, the MCU resets a capacitor key chip within a predetermined time, and releases an inter-integrated circuit (IIC) bus which is connected with the capacitor key chip. By the method disclosed by the invention, a problem that the capacitor key is not triggered can be solved; in particular, the problems that after a capacitor key machine is placed in a high-temperature environment for a certain time, the key does not respond, the complete machine cannot quit, and a suspended crash issue occurs are solved.

Description

technical field [0001] The invention relates to the field of electronic payment, in particular to a repair method for failure to trigger a capacitive button. Background technique [0002] In the field of electronic payment, most of the existing buttons use traditional mechanical buttons, and the reading of the buttons is interpreted in a row-column scanning manner. Newly introduced capacitive buttons used in the home appliance industry, please refer to figure 1 , the use process is as follows: the finger triggers the button, resulting in a change in the capacitive reactance CT of the button surface→the button with the capacitive reactance change is recognized by the dedicated capacitive button chip, and the corresponding button value is confirmed→the dedicated capacitive button IC sends an interrupt to the MCU, and the MCU responds to the button value . However, if the capacitive button machine is placed in a high-temperature environment for a period of time, the butto...

Claims

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Application Information

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IPC IPC(8): G06F11/07H03K17/975
Inventor 曾德炎蒋锦扬黄桂登
Owner FUJIAN LANDI COMML EQUIP CO LTD