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Button judging method and device thereof

A technology for judging devices and keys, applied in instruments, dynamic coding, computing, etc., can solve problems such as increased production costs and missing keys, and achieve the effect of avoiding the phenomenon of ghost keys

Active Publication Date: 2018-08-10
MSI ELECTRONICS KUN SHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first method uses the firmware program to exclude, but when ghost key phenomenon occurs, this method will judge all key input as invalid, and the key will be missed.
The second method is to install a diode at each intersection for detection, but its production cost is greatly increased

Method used

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  • Button judging method and device thereof

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Embodiment Construction

[0062] The detailed features and advantages of the present invention are described in detail below in the implementation manner, and its content is enough to make any person familiar with the relevant art understand the technical content of the present invention and implement it accordingly, and according to the content of the invention in this specification, the scope of the patent application and the drawings , anyone skilled in the relevant art can easily understand the related objects and advantages of the present invention. The following examples are to further describe the viewpoints of the present invention in detail, but not to limit the scope of the present invention in any respect.

[0063] Please refer to figure 1 , which is a flowchart of a method for determining a key according to an embodiment of the present invention. Wherein, the step of the method for determining the button may include the following steps. A trigger signal is received, and the trigger signal...

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Abstract

The invention discloses a button judging method and a device thereof. The button judging method is applicable to a keyboard input device, which includes receiving a trigger signal, and the trigger signal corresponds to a first circuit cross point and a second circuit cross point of the keyboard input device at the same time. It is judged whether a first key definition of the first circuit intersection point is an empty key. When the first key definition of the first circuit intersection is an empty key, a signal corresponding to the second key definition of the second circuit intersection is output. The button judging device is used for executing the button judging method.

Description

technical field [0001] The present invention relates to a key judgment method and its device, in particular to a key judgment method and its device for avoiding ghost key (Ghost Key) phenomenon. Background technique [0002] Among today's input devices, the keyboard is the most common and most commonly used device. In order to reduce the production cost and simplify the design, the keyboard gradually evolves from a high-cost mechanical type to a low-cost thin-film type, and uses a matrix (Matrix) circuit. [0003] Since the principle of the keyboard is to use a matrix circuit, it may cause ghost keys (Ghost key) phenomenon. For example, assume that there are two circuits in the vertical and horizontal directions of the matrix circuit. Wherein, the two circuits in the vertical direction are the upper vertical circuit and the lower vertical circuit respectively, and the two circuits in the horizontal direction are the upper horizontal circuit and the lower horizontal circuit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M11/20
CPCG06F3/0233G06F3/023
Inventor 李侑俟蔡欣晃黄建明
Owner MSI ELECTRONICS KUN SHAN