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Method for driving motor of mobile phone and mobile equipment

A driving method and mobile phone technology, applied in branch equipment, telephone structure, linear DC motor control, etc., to achieve the effect of low-cost design, good control effect, and improved performance of the whole machine

Active Publication Date: 2010-06-09
QINGDAO HISENSE MOBILE COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If we can find a low-cost design scheme for linear motor drive control without adding hardware to the current mobile phone structure, it will be of great benefit to the cost control of mobile phones

Method used

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  • Method for driving motor of mobile phone and mobile equipment
  • Method for driving motor of mobile phone and mobile equipment
  • Method for driving motor of mobile phone and mobile equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment one, see figure 1 As shown, in the mobile phone circuit of this embodiment, in order to realize the drive control of the linear motor, one of the output terminals of the audio chip is connected to the linear motor, and the analog signal output by the audio chip is used to drive the linear motor to vibrate.

[0029] Since the audio chips in mobile phones generally use CODEC, that is, multimedia digital signal codec, it is mainly responsible for digital->analog signal conversion (DAC) and analog->digital signal conversion (ADC), and converts digital signals into analog signals during playback. When recording, the analog signal is converted into a digital signal. In order to meet the design requirements of driving and controlling the linear motor while playing the audio signal normally, in this embodiment, it is necessary to use an audio chip with a stereo DAC module and an auxiliary DAC module for circuit design, such as WM9713 and WM9712 of WOLFSON. chip. Am...

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Abstract

The invention discloses a method for driving a motor of a mobile phone and mobile equipment. The method comprises the following steps of: firstly, generating a specific audio data file according to a set frequency; secondly, supplying the specific audio data file to an audio chip for digital-to-analogue conversion when a linear motor in the mobile phone needs to be driven to vibrate; and finally,sending an analog signal generated by conversion to the linear motor via the audio chip so as to drive the linear motor to vibrate. The method drives the linear motor to vibrate via the analog signalproduced by the audio chip in the mobile phone, so driving control on the linear motor can be realized without adding a special driving chip or a peripheral circuit. The method not only realizes low-cost design of a hardware circuit, but also achieves an excellent control effect on the linear motor on the basis of not affecting normal audio play, so the overall performance of a mobile phone product is improved.

Description

technical field [0001] The invention belongs to the technical field of mobile communication terminals, and in particular relates to a method for driving a vibration motor in a mobile communication terminal and a mobile device designed using the method. Background technique [0002] With the development of mobile phone technology, the vibration function is more and more applied to various mobile phone products. The control of ordinary motors is relatively simple, and can be controlled through the GPIO port of the main processor. When the GPIO port outputs a high level, the motor vibrates; when the GPIO port outputs a low level, the motor stops vibrating. However, the response speed of ordinary motors is relatively slow, while linear motors respond quickly. Therefore, more and more mobile phone manufacturers choose to use linear motors instead of ordinary motors for hardware circuit design. [0003] Although the linear motor has fast response and long life, the cost is much h...

Claims

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Application Information

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IPC IPC(8): H04M1/02H04M1/725H02P7/02H04M1/72442
Inventor 孙增国
Owner QINGDAO HISENSE MOBILE COMM TECH CO LTD
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