KR20040045798A - Apparatus for wire wireless hand free have setting function multichannel - Google Patents

Abstract

PURPOSE: A wired/wireless handsfree device having a multi-channel setting function is provided to allow a user to transfer a mode of a call made to a mobile phone into a wireless mode or a wire mode according to places and circumstances. CONSTITUTION: The second low pass filter(210) filters a voice signal to remove noise. A wire/wireless selector(212) transfers the voice signal to a wire mode and a wireless mode. The second audio amplifier(214) amplifies the voice signal to a sufficient amplitude and outputs it to an internal speaker(216). A channel setting unit(218) sets a plurality of channels and outputs them. A radio frequency transmission module(220) modulates the received voice signal to the frequency set by the channel setting unit(218), amplifies power of the signal, and sends the power-amplified voice signal to a car radio receiver(30) so as to be reproduced and outputted to a speaker. A microphone(200) converts voice of a user into an electric signal. The first audio amplifier(202) amplifies the voice signal to a sufficient amplitude and outputs it. An echo preventing unit(208) generates a control signal to prevent feedback of an output sound from the interval speaker(216) to the microphone(200). An audio muting unit(204) determines whether there is an output of the voice signal inputted from the first audio amplifier(202). The first low pass filter(206) filters the voice signal inputted from the audio muting unit(204) and transmits it to a mobile phone(10).

Description

Apparatus for wire wireless hand free have setting function multichannel}

The present invention relates to, for example, a hands-free device used to prevent a risk of an accident caused by a telephone call while driving a vehicle. More particularly, the present invention relates to a speaker or a handsfree of a vehicle according to a user's request. The present invention relates to a wired and wireless hands-free device having a multi-channel setting function for making a direct call and setting a radio frequency set in each country so that call quality can be stabilized and ease of use.

In general, when a mobile communication terminal such as a cellular phone and a PCS phone is used while driving a vehicle (hereinafter, abbreviated as "mobile phone"), the steering wheel of the steering wheel is not only degraded because the driver must take the mobile phone by hand. As attention to the contents of the mobile phone is concentrated, the forward attention concentration is relatively lowered, and the caller's forward attention concentration is deteriorated by the process of manipulating a plurality of buttons installed on the mobile phone. Accordingly, if the mobile phone is taken directly while the vehicle is in use, it will have a significant adverse effect on the safety operation.

Therefore, in recent years, there is a situation in which a mobile phone is directly regulated by taking a mobile phone while driving. In consideration of this, a wired or wireless hands-free device for making a mobile phone call possible in a vehicle has been proposed and widely used. .

Such hands-free devices are generally powered by a vehicle and used as operating power, while an appropriate mounting structure including a magnet for mounting a mobile phone on the front thereof is mounted on a dashboard inside the vehicle, and the power of the cigarette lighter is turned on. The charging connector is applied to the mobile phone's operating power and battery charging power, and is connected to the call voice input / output port of the mobile phone so that the call voice connector for reproducing and outputting the call voice is input. A speaker for reproducing the call voice received from the mobile phone by the call voice connector, a microphone for inputting the call voice to the mobile phone side, and an earphone / microphone for detaching the call by the secret call function. Earphone / microphone connection jack is provided.

Therefore, when using the wired hands-free device as described above, the call voice input through the microphone in the state where the incoming call is generated is delivered to the mobile phone through the call voice connector, and the call voice is transmitted from the mobile phone to the other party. The call voice of the other party reaching the mobile phone is transmitted to the hands-free device through the call voice connector and reproduced through the speaker coupled to the main body. Thus, when using the hands-free device, the mobile phone does not take the mobile phone directly while driving the vehicle. It is possible to talk by mobile phone.

However, in the case of the conventional stationary wired hands-free device, the structure is simple and inexpensive, while the speaker coupled to the main body is not able to accurately listen to the received voice call due to the small relationship, and when the volume is loud, There is a problem of crushed and regenerated.

In addition, the radio hands-free device using the radio receiver and the speaker provided in the vehicle by using the radio frequency (RADIO FREQUENCY) can hear the clear sound quality because the speaker size is large, while to make a call, the frequency set in the general radio receiver is In addition to the hassle of tuning to match the transmission frequency of the hands-free device, there is a problem in that a lot of noise is generated depending on the environment, and the call is cut off at the moment.

On the other hand, most wireless hands-free devices used in Korea are set to a single frequency. As such, when the wireless hands-free device designed for domestic use is used abroad, the frequencies cannot be used differently. Therefore, it is difficult for a manufacturer to design and design a domestic hands-free device and an overseas hands-free device separately by setting a frequency suitable for each country in the case of overseas export models. There is a problem that comes with the economic difficulty of buying all of the hands-free device.

In addition, hands-free devices in Korea have been produced in two types, wired and wireless. However, the consumer has a problem that only one product can be selected from the two types of hands-free devices.

Therefore, as a low cost hands-free device having a wired / wireless complex function in terms of cost and a single product in terms of reliability, while being able to heal the above-mentioned problems, it is possible to make a telephone call at home and abroad at home and abroad according to a user's choice. In addition, it is desirable to provide a hands-free device with excellent call quality.

Accordingly, an object of the present invention is to provide a wired and wireless hands-free device having a multi-channel setting function that can ensure the safety of the vehicle operation by making a telephone call to a mobile phone by wire or wireless according to the user's request. For this reason, the wireless hands-free device is provided with a main body, a wired / wireless selecting means for selecting a wired call mode and a wireless call mode, and a high-frequency transmitting module for modulating a received voice signal of a cellular phone at high frequency and transmitting it to a radio receiver. When a voice signal is received from a mobile phone, the received voice signal is modulated to a high frequency according to a mode selected by the wire / wireless selecting means and output to a speaker of a vehicle through a radio receiver or to a speaker or earphone of a main body. .

Another object of the present invention is to provide a wired and wireless hands-free device having a multi-channel setting function to enable a wired call and a wireless call selectively in domestic as well as overseas as a single product. A channel setting means is provided in a high frequency transmission module connected to a receiver and a high frequency line, and the user sets and uses the radio frequency set according to each country.

It is still another object of the present invention to provide a wired and wireless handsfree device having a multi-channel setting function that can dramatically cover the economic and functional aspects that conventional wired or wireless handsfree devices cannot achieve.

Other objects of the present invention will become more apparent from the following description of the DTP and the accompanying drawings.

1 is a block diagram schematically showing an embodiment provided in the description of a wired and wireless hands-free device having a multi-channel setting function according to the present invention;

FIG. 2 is a block diagram illustrating in detail the wired and wireless hands-free device having the multi-channel setting function of FIG. 1.

<Description of the symbols for the main parts of the drawings>

10: mobile phone 20: U, wireless hands-free device

30: radio receiver 200: microphone

204: Audio muting unit 208: Echo blocking unit

212: wired / wireless selection unit 218: channel setting unit

220: high frequency transmission module

According to the wired and wireless hands-free device having a multi-channel setting function according to the present invention for achieving the above objects, low-pass filtering and amplifying the received voice signal connected to a mobile phone and outputs its own built-in speaker, the microphone In a vehicle hands-free device for amplifying and low pass filtering a transmitted voice signal input through a mobile phone and transmitting the same to a mobile phone:

(1) switching the received voice signal of the low-pass filtered mobile phone to a wired mode and a wireless mode according to a user's mode selection, and outputting the received voice signal to the built-in speaker through an audio amplifying means when selecting the wired mode. Wired and wireless selection means; (2) channel setting means for setting and outputting a plurality of channels according to a user's operation; And (3) a high frequency transmission module for modulating the received voice signal inputted by line switching in the wire / wireless selecting means to a frequency set by the channel setting means and transmitting the received voice signal to a vehicle radio receiver.

Preferably, the channel setting means is characterized by consisting of a dip (DIP) switch.

Optionally, an earphone jack for connecting an earphone to the wired or wireless selection means is provided.

In this way, when a voice signal is received from the mobile phone while the vehicle is in operation, the received voice signal may be listened to by the speaker of the vehicle through the radio receiver according to the call mode selected by the wired / wireless selecting means, or the speaker or earphone of the main body may be Listening through it can be seen that the call with the other party.

As a result, it is possible to make a telephone call to a mobile phone by wire or wirelessly depending on the place and surrounding environment so that it can secure safety and listen to clean sound according to the driving of a vehicle. Not only wireless communication is possible, but also economical and functional aspects that conventional wired and wireless hands-free devices cannot achieve are advantageously covered.

And, there may be a plurality of embodiments of the present invention, the following most preferred embodiments will be described in detail.

Through this preferred embodiment, the objects, other objects, features and advantages of the present invention will become more apparent from the following description with an embodiment according to the present invention in connection with the accompanying drawings shown for illustrative purposes.

Hereinafter, exemplary embodiments of a wired and wireless hands-free device having a multi-channel setting function according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically showing an embodiment provided in the description of a wired and wireless handsfree device having a multi-channel setting function according to the present invention, Figure 2 is a wired, wireless hands-free having a multi-channel setting function of Figure 1 A block diagram showing the device in more detail.

As shown in FIG. 1, the wired and wireless hands-free device 20 having the multi-channel setting function according to the present embodiment is connected to the cellular phone 10 by a wired line and is connected to the vehicle radio receiver 30 by a high frequency line. have.

That is, the voice signal received from the mobile phone 10 is output to its internal speaker through a wired line or transmitted to the radio receiver 30 through a high frequency line according to a user's selection, and received through its own microphone. The voice signal is transmitted to the mobile phone 10 through a wired line to have a phone call with the other party.

As shown in FIG. 2, the wired and wireless hands-free device 20 includes a power supply unit for rectifying power supplied from a cigarette lighter (not shown) to a predetermined level and supplying the power to each system, and received from the mobile phone 10. The second low pass filter 210 to remove noise by low heat filtering the voice signal and the received voice signal from which the noise is removed from the second low pass filter 210 according to the user's mode selection are wired and wireless. A wired / wireless selector 212 for switching, a? P2 audio amplifier 214 for amplifying the received voice signal selected by the wired mode selector 212 to a sufficient size, and outputting it to the built-in speaker 216; The channel setting unit 218 for setting and outputting a plurality of channels according to the operation, and the received voice signal inputted by being line switched from the wire / wireless selection unit 212 to the frequency set by the channel setting unit 218 and amplifying the power. And a high frequency transmission module 220 for transmitting the power-amplified received voice signal to the vehicle radio receiver 30 through an antenna ANT to be reproduced and output to the speaker of the vehicle, and converting the user's voice into an electrical signal. The microphone 200, a first audio amplifier 202 for amplifying and outputting a transmitted voice signal input through the microphone to a sufficient magnitude, and detecting the presence or absence of a received voice signal from the mobile phone 10 When received, the echo blocker 208 generates a control signal for blocking the output sound of the built-in speaker 216 from being fed back to the microphone 200 and the first signal according to the control signal of the echo blocker 208. The audio muting unit 204 determines whether to output the transmission voice signal input from the audio amplifying unit 202 and the transmission voice signal input from the audio muting unit 204 by low heat filtering to transmit the mobile phone 10. 1 low The reverse filter 206 is configured.

The wired and wireless hands-free device having the multi-channel setting function according to the present invention made as described above will be described in more detail with reference to FIGS. 1 and 2.

First, when a phone arrives to the mobile phone 10 and a voice signal is received therefrom, the second low pass filter 210 maximizes the voice signal among the received signals and suppresses noise to provide the wired / wireless selector 212. In this case, when the user operates the right and left wireless selection unit 212 to switch to the wired mode, the received audio signal filtered by the second low pass filter 210 is transferred to the second audio amplifier through the wired and wireless selection unit 212. 214).

The second audio amplifier 214 amplifies the received voice signal to a sufficient size, and then outputs it through the built-in speaker 216 provided in the wired and wireless hands-free device 20 or to make a secret call. When the earphone is not connected to the earphone jack of the wire / wireless selector 212, the received voice signal is output to the earphone so that the driver can listen to the voice signal of the other party through the earphone or the built-in speaker 216.

Meanwhile, the user switches the wire / wireless selection unit 212 to the wireless mode while the vehicle radio receiver 30 is turned on, and also operates the channel setting unit 218 such as a dip switch to set the frequency set for each country. In this case, the received voice signal from which the noise is removed by the second low pass filter 210 is input to the high frequency transmission module 220 through the wire / wireless selector 212.

The high frequency transmission module 220 modulates the transmission voice signal input from the wire / wireless selection unit 212 to the frequency set by the channel setting unit 218 and amplifies the power and transmits the power through the antenna. The received voice signal transmitted from the high frequency transmission module 220 is received through the antenna of the vehicle radio receiver 30 tuned to the transmission frequency of the hands-free device, that is, the frequency of the channel setting unit 218, and reproduced by the vehicle speaker. Output Here, at least 14 channels that can be set by the channel setting unit 218 such as a dip switch may be set by manipulating the dip switch as necessary.

Subsequently, when listening to the voice signal of the other party through the radio receiver 30 as described above, if the sound is cut off or a lot of noise occurs in accordance with the surrounding environment again by operating the wired / wireless selection unit 212 to the built-in speaker ( 216, or in the case where it is impossible to accurately listen to the voice signal of the other party through the built-in speaker 216, as described above, by operating the wired / wireless selector 212, a vehicle radio receiver ( 30) speakers can listen. As such, when a call is attempted through the speaker and the built-in speaker 216 of the radio receiver 30 provided in the vehicle, a wired or wireless call is possible by switching operation of one wire / wireless selector 212.

On the other hand, the microphone 200 converts a user's (driver's) voice into a transmission voice signal which is an electrical audio signal, and the converted transmission voice signal is amplified to a sufficient size by the first audio amplifier 202 and then the audio muting unit 204 is entered.

At this time, the echo blocking unit 208 detects the presence or absence of the received voice signal from the mobile phone 10, and when the received voice signal is detected, the output sound of the built-in speaker 216 is fed back to the microphone 200. The audio muting unit 204 provides a high signal that is a control signal for blocking a signal and a low signal that is a control signal for transmitting a transmission voice signal when there is no received voice signal.

Accordingly, the audio muting unit 204 blocks or transmits the transmitted voice signal of the first audio amplifier 202 to the first low pass filter 206 according to the control signal of the echo blocking unit 208. The low pass filter unit 206 maximizes the voice signal among the signals to be transmitted and suppresses the noise to the mobile phone 10 to transmit the transmitted voice signal to make a call with the other party. You can make calls and secret calls with the other party without taking 10).

On the other hand, as a comparative example, it is produced in two types of conventional technologies, that is, wired and wireless, so from the consumer's point of view, only one product should be selected from the two types of hands-free devices, and in the case of a wireless hands-free device, Unlike in the case where the frequency is fixed to one channel, when the voice signal is received from the mobile phone, the present invention can listen to the radio receiver or the speaker of the main body, and also set the channel to multi-channel at the user's selection. You can see that you can.

In this result, according to the present invention, it is possible to make a telephone call to a mobile phone in a wired or wireless manner according to the surrounding environment to ensure safety and clean sound according to the driving of the vehicle, and also as a single product wired at home and abroad There is an advantage in making calls and wireless calls.

In addition, although specific embodiments of the present invention have been described and illustrated above, it is obvious that the present invention may be variously modified and implemented by those skilled in the art.

Such modified embodiments should not be individually understood from the technical spirit or the prospect of the present invention, and such modified embodiments should fall within the appended claims of the present invention.

According to the wired / wireless hands-free device having a multi-channel setting function of the present invention, which is clear from the above description, it is possible to switch a telephone call to a mobile phone to a wired or wireless connection according to a place and a surrounding environment, thereby ensuring safety according to vehicle operation. This can be secured, of course, you can hear a clear sound.

In addition, the user can select and set a plurality of channels directly, thereby enabling wired and wireless calls at home and abroad as a single product, as well as economical and functional features that conventional wired or wireless handsfree devices do not achieve. There is an effect that the surface is significantly covered.

Claims (3)

A hands-free device for a vehicle for low pass filtering and amplifying a received voice signal connected to a mobile phone and outputting the same to a speaker, and amplifying and low pass filtering the input voice signal through a microphone and transmitting the same to a mobile phone; (1) wire-wired and wirelessly converting the received voice signal of the low-pass filtered mobile phone into a wired mode and a wireless mode according to a user's mode selection, and outputting the received voice signal to an internal speaker through an audio amplifying means when the wired mode is selected. Selection means; (2) channel setting means for setting and outputting a plurality of channels according to a user's operation; And (3) a multi-channel setting function, characterized in that it comprises a high-frequency transmission module for modulating the received voice signal inputted by being switched in the wire / wireless selecting means to a frequency set in the channel setting means and transmitting it to a vehicle radio receiver. U, wireless handsfree device. The method according to claim 1, The channel setting means is a wired, wireless hands-free device having a multi-channel setting function, characterized in that consisting of a dip (DIP) switch. The method according to claim 1, Wire and wireless hands-free device having a multi-channel setting function, characterized in that the earphone jack for connecting the earphone to the wired or wireless selection means.