Rotary knob control device and rotary knob control method

Abstract

The invention provides a rotary knob control device which comprises a resistance type rotary knob module, a preprocessing model and a main processing module, wherein the resistance type rotary knob module is used for outputting rotary knob input signals to the preprocessing module, the strength of the rotary knob input signals is within a certain range, the preprocessing module is used for receiving the rotary knob input signals and is provided with a rotary knob threshold value upper limit and a rotary knob threshold value lower limit, no treatment is carried out when the rotary knob input signals are between the threshold value upper limit and the threshold value lower limit, interrupt signals are sent to the main processing module when the rotary knob input signals are higher than the threshold value upper limit or lower than the threshold value lower limit, and the main processing module receives the interrupt signals, sends out main control signals, and resets the threshold value upper limit and threshold value lower limit for the preprocessing module. Due to the fact that the interrupt signals are sent to a main processor to achieve regulation and control when the rotary knob input signals are beyond a threshold value, a large amount of resource space of the main processor is saved.

Description

technical field [0001] The invention relates to the field of knob control, in particular to a knob control device and a knob control method for completing control by sending an interrupt signal. Background technique [0002] There are two commonly used methods in the existing volume control methods for some handheld terminals. One is the method used by the radio, which directly changes the size of the resistance through the knob to achieve corresponding control of the volume. This method is not easy to be controlled during actual use, and it is difficult to grasp the degree of volume adjustment when adjusting. It is not suitable for devices that change the volume, such as walkie-talkies, which need to be adjusted according to the noise level of the environment. Adjustment, this method of volume adjustment directly by changing the size of the resistor is obviously not applicable. [0003] Another way is to continuously access the main processor in rotation when the audio kno...

AI Technical Summary

Problems solved by technology

This method is not easy to be controlled during actual use, and it is difficult to grasp the degree of volume adjustment when adjusting. It is not suitable for devices that change the volume, such as walkie-talkies, which need to be adjusted according to the noise level of the environment. Adjustment, this method of volume adjustment directly by changing the size of the resistor is obviously not applicable

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