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Mobile phone volume adjusting device

A volume adjustment, mobile phone technology, applied in the electronic field, to achieve the effect of comfortable call experience, improved compactness and aesthetics

Inactive Publication Date: 2014-11-19
SHINAN BRANCH OF QINGDAO BLUEPRINT CULTURE COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention proposes a mobile phone volume adjustment device, which solves the problem in the prior art of realizing volume adjustment by pressing keys

Method used

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  • Mobile phone volume adjusting device

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Embodiment Construction

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0016] Such as figure 1 As shown, the mobile phone volume adjustment device of the present invention includes: an audio input device 100 and an audio output device 400, the audio input device 100 is connected to a speaker 800 through an audio amplifier circuit 700, and the speaker 800 outputs to the user another terminal received The audio signal of the device, the audio output device 400 receives the user's voice signal and transmits it to another terminal device ...

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Abstract

The invention provides a mobile phone volume adjusting device. The mobile phone volume adjusting device comprises an audio input device and an audio output device, wherein the audio input device is connected to a first sampling circuit; the first sampling circuit is used for acquiring the volume value of the audio input device and converting the acquired volume value into a corresponding first voltage value; the audio output device is connected to a second sampling circuit; the second sampling circuit is used for acquiring the volume value of the audio output device and converting the acquired volume value into a corresponding second voltage value; a first comparator is a hysteresis comparator, and is used for comparing the first voltage value with the second voltage value, and outputting difference voltage to a first compensating circuit when the difference value between the first voltage value and the second voltage value surpasses a preset range; and the first compensating circuit is an on-off controller, and is used for outputting a pulse signal with an adjustable duty ratio according to the difference voltage, controlling the switch-on and switch-off of a switching tube in an audio amplifying circuit, and adjusting power output to a loudspeaker.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a mobile phone volume adjustment device. Background technique [0002] The emergence of mobile phones has changed people's living and working habits. In April 1973, Martin Cooper, a well-known American engineer and technician at Motorola, developed the first mobile phone in the United States to be used by civilians. Therefore, Martin Cooper is also known as The father of the modern mobile phone. [0003] Existing mobile phones are divided into smart phones and non-smart phones. Generally, the performance of smart phones is better than that of non-smart phones, but non-smart phones are more stable than smart phones. Most non-smart phones and smart phones use the CPU of the British ARM company architecture. The main frequency of smart phones is higher, the running speed is fast, the smart phone processes program tasks faster, and the daily life is more convenient, while the main frequen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/725
Inventor 田海红王海伟田攀
Owner SHINAN BRANCH OF QINGDAO BLUEPRINT CULTURE COMM
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