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Hand-free device

A hands-free, ultrasonic technology, used in interconnection devices, telephone communication, branch office voice amplifiers, etc., can solve the problem of safe driving and other problems, and achieve the effect of improving use efficiency

Inactive Publication Date: 2008-01-09
LEJIN ELECTRONICS KUNSHAN COMPUTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If you must make an emergency call while driving, it will pose a great threat to safe driving

Method used

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Embodiment Construction

[0023] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] In the following description, in order to facilitate the understanding of the operation and application of the present invention, only the necessary parts will be described, and the description of other parts that deviate from the gist of the present invention will be omitted. Therefore, please pay attention.

[0025] In the following description, in order to have a more comprehensive understanding of the present invention, only the specific parts of the hands-free device of the present invention are described, and the specific parts that do not belong to the present invention are known to those in the technical field, so no further Detailed description.

[0026] Fig. 2 is a structural diagram of the hands-free device of the present invention.

[0027] Referring to FIG. 2 , the hands-free device 30 connected to the mobile phone 20 is composed of...

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Abstract

In invention can be attached to a mobile phone at calling state in order to realize the hands-free function of mobile phone. The device also comprises a microphone used for collecting and sending out user's voice; and a supersonic wave loud speaker used for receiving the modulated supersonic signals from opposite side, and enhancing and outputting the supersonic signals.

Description

technical field [0001] The invention relates to a hands-free device, in particular to a hands-free device capable of producing a larger volume nonlinear sound box speaker on a vehicle-mounted hands-free device. Background technique [0002] Recently, with the rapid spread of mobile phones, the use of mobile phones in cars has also increased. When the driver talks on the mobile phone during the operation of the vehicle, it is necessary to provide a hands-free function of the mobile phone that does not hinder safe driving. [0003] FIG. 1 is a block diagram of a hands-free device in the prior art. [0004] With reference to Fig. 1, under the situation that the other party calls in and talks, input driver's voice by the microphone 11 that is installed on the vehicle, pass the other party in the call by mobile phone 20 again. Conversely, the other party's voice is transmitted to the user through the output amplifier (not shown) for driving the speaker and the audio speaker 13 ...

Claims

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Application Information

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IPC IPC(8): H04M1/60H04B1/38H04M9/00H04B1/3822
Inventor 卓珍熙
Owner LEJIN ELECTRONICS KUNSHAN COMPUTER CO LTD
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