Key detection method and device
A detection method and a technology of a detection device, which are applied in the electronic field, can solve problems such as the low success rate of key presses, and achieve the effect of reducing the probability of interference
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[0044] The inventor found that in the existing key detection technology, since the key signal is sampled at a fixed frequency, the signal of the constantly changing external environment is easier to track the frequency of the sampling signal, and then interferes with the sampling signal, resulting in the inability to detect an effective key signal , or mistake the interference signal for a valid key signal. Therefore, the inventor proposes a method of frequency-variable sampling of the button signal, so as to reduce the probability that the sampling signal is affected by external interference signals.
[0045] 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 key, for example, may also be a resistive ke...
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