Key detection method, keyboard and key system

Abstract

The invention relates to the field of key detection, and discloses a key detection method, a keyboard and a key system. The key detection method is applied to a keyboard, and comprises the following steps: when a key event occurs, detecting a level change signal of a key detection pin connected with a key; when the level jump of the key detection pin occurs for the first time, a first level of thejumped key detection pin is obtained, and the first level is located in a leading edge jitter area of the level change signal; and according to the level type of the first level and the level type ofa preset pressing level, executing a key pressing subprogram of the key in the front edge jitter area, and stopping detecting a level change signal of the key detection pin. The embodiment of the invention is not influenced by the leading edge jitter signal, and the response speed of key execution is improved.

Description

technical field [0001] The invention relates to the field of key detection, in particular to a key detection method, a keyboard and a key system. Background technique [0002] The key detection method is widely used in key input modules of various devices, such as keyboards, to detect key events. The key events include key press and key release, thereby realizing the simplest human-computer interaction. [0003] At present, the level change signal of the button detection pin is acquired after a preset time delay, so as to avoid the influence of the leading edge jitter signal on the button detection result. However, for special application scenarios, such as game competitions, even a millisecond-level delay is enough to change the result of the game. The debounce delay will increase the response time of the button to execute the button press subroutine and reduce the sensitivity of the button. In order to solve the above problems, the embodiment of the present invention prop...

AI Technical Summary

Problems solved by technology

However, for special application scenarios, such as game competitions, even a millisecond-level delay is enough to change the result of the game. The debounce delay will increase the response time of the button to execute the button press subroutine and reduce the sensitivity of the button.

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