Vehicle-mounted volume adjusting device

A technology of audio input and audio output, applied in the field of electronics, to achieve the effect of improving the experience and making the call experience comfortable

Inactive Publication Date: 2014-12-17
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 vehicle-mounted volume adjustment device, which solves the problem in the prior art of realizing volume adjustment through buttons

Method used

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  • Vehicle-mounted volume adjusting device
  • Vehicle-mounted volume adjusting device

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Embodiment Construction

[0020] 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.

[0021] Such as figure 1 As shown, the vehicle-mounted 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 devi...

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Abstract

The invention provides a vehicle-mounted volume adjusting device which comprises an audio input device, an audio output device, a first comparator and a first compensation circuit. The audio input device is connected to a first sampling circuit which collects a volume value of the audio input device and converts the volume value into a corresponding first voltage value, and the audio output device is connected to a second sampling circuit which collects a volume value of the audio output device and converts the volume value into a corresponding second voltage value; the first comparator is a hysteresis loop comparator, compares the first voltage value with the second voltage value and outputs difference voltage to the first compensation circuit when difference of the first voltage value and the second voltage value exceeds a preset range; the first compensation circuit is a switch controller, outputs pulse signals adjustable in duty ratio according to the difference voltage, controls connection and disconnection of a switch tube in an audio amplifying circuit and adjusts power output to a loudspeaker.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a vehicle volume adjusting device. Background technique [0002] Looking forward to the development of automotive electronics technology, modern automotive electronics has entered a new stage of substantial improvement from the electronic components used to the architecture of the electronic system in the car. With the development of automotive semiconductor technology, cars will become more and more humanized, and even electrification of all functions will be realized. The operation will be more comfortable, convenient, and environmentally friendly. The needs of automotive safety, environmental protection, and entertainment will promote the rapid development of the automotive sensor market. . [0003] In order to enhance the assisted driving function of the system, an intelligent car voice system technology with voice function has been developed rapidly. Connect to realize answering...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
Inventor 王海伟郇文杰田攀
Owner SHINAN BRANCH OF QINGDAO BLUEPRINT CULTURE COMM
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