Triggering method and device of key detection and key detection method

A technology of a trigger device and a detection method, which is applied in the electronic field, can solve problems such as detection omissions, and achieve the effect of improving the detection success rate

Active Publication Date: 2013-01-09
JIANGSU HUITONG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] What the present invention aims to solve is the problem that the existing trigger method for button detection is likely to cause detection omissions due to the use of one-way frequency hopping to receive external signals

Method used

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  • Triggering method and device of key detection and key detection method
  • Triggering method and device of key detection and key detection method
  • Triggering method and device of key detection and key detection method

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Embodiment Construction

[0033] Aiming at the problem that the existing trigger button detection method uses one-way frequency hopping to receive external signals and easily causes detection omissions, the inventor of the present invention proposes a method of using two-way frequency hopping to receive external signals to generate a trigger signal. The two-way frequency hopping reception includes positive frequency hopping reception and anti-frequency hopping reception. The positive frequency hopping refers to increasing from the third frequency to the fourth frequency, and the anti-frequency hopping refers to decreasing from the fourth frequency to the third frequency.

[0034] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the following embodiments use capacitive touch keys as an example for illustration. In other embodiments, the keys are not limited to The capacitive touch ...

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Abstract

The invention relates to a triggering method and device of key detection and a key detection method. The triggering method of the key detection comprises the following steps: receiving external signals in a frequency hopping mode, i.e. only receiving the external signals of which the frequency is the same as the hopping frequency, wherein the hopping frequency progressively increases from the third frequency to the fourth frequency and then progressively decreases from the fourth frequency to the third frequency, the progressively increasing process and the progressively decreasing process are repeated, and the progressively increased hopping frequency is different from the progressively decreased hopping frequency; and when the frequency of the external signals is in the range between the first frequency and the second frequency, generating triggering signals, wherein the third frequency is less than the first frequency, and the fourth frequency is greater than the second frequency. The triggering method and device of the key detection and the key detection method can improve the success ratio of the key detection.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a key detection trigger method and device, and a key detection method. Background technique [0002] At present, various types of keys have been widely used in various electronic products, and the success rate of key detection directly affects the use of electronic products. Key detection generally refers to detecting an operation on a key to determine whether the key is pressed. [0003] The existing button detection method comprises the following basic steps: detecting the button, obtaining the button signal; sampling the button signal at a fixed frequency, and when the number of times the effective signal of the button is sampled within a predetermined time range reaches or exceeds the predetermined number of times, output control signal. [0004] Usually, the above key detection is triggered by a trigger signal, and the trigger signal is generated when it is detected th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/327G08C17/02
Inventor 龙涛刘正东龙江
Owner JIANGSU HUITONG GRP
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