KR20040006853A - Wireless handfrees kit - Google Patents

Abstract

PURPOSE: A wireless handsfree kit is provided so that a user conveniently talks with an object by communicating with a mobile phone in a state in which the user carries the mobile phone. CONSTITUTION: The first wireless transmitting and receiving unit(13), inserted and installed in a microphone jack of a mobile phone(33) of a user, transmits and receives termination and origination signals or voice signals of a user and an object with the mobile phone(33) in an analog state by wire. The first wireless transmitting and receiving unit(13) transmits and receives the termination and origination signals or the voice signals of the user and the object with a body in a digital state by wireless. The second transmitting and receiving unit(19) transmits and receives the termination and origination signals or the voice signals of the user and the object with the first wireless transmitting and receiving unit(13) in the digital state by wireless. A keypad(21) inputs a key signal to a microcomputer(11) for hooking on or off the mobile phone(33), and connects or disconnects the second transmitting and receiving unit(19) with the first wireless transmitting and receiving unit(13) by wireless. A converting unit(23) converts the voice signal of the object transmitted to the second transmitting and receiving unit(19) into an analog signal, and converts the voice signal of the user received through a microphone(31) into a digital signal. If the digital voice signal of the object or the user is same or similar with a previous signal, a digital processing unit(25) equalizes the digital voice signal of the object or the user and outputs the voice signal of the user to the converting unit(23). An amplifying unit(27) amplifies the equalized voice signal of the object, and outputs the amplified voice signal to a speaker(29).

Description

Wireless handfrees kit {Wireless handfrees kit}

The present invention relates to a hands-free kit, and more particularly, to a wireless hands-free kit in which a user can wirelessly connect and talk with a counterpart while carrying a mobile phone in a pocket or a bag.

As mobile phones transmit and receive voice signals wirelessly, the number of users is rapidly increasing because they can easily talk with each other regardless of the place. Although a mobile phone can be used indoors where a landline phone is installed in a home or an office, it can be conveniently used while traveling, such as walking or driving a vehicle.

However, when the mobile phone is used during work, walking or driving a vehicle, in particular, when the mobile phone is used while driving, the user may drive with one hand while holding the mobile phone with one hand and making a phone call. As a result, the user's attention to the front and the concentration of the surrounding situation is lowered, causing a traffic accident.

Therefore, the vehicle is equipped with a hands-free kit that performs the function of the mobile phone instead, and the user is talking without carrying the mobile phone directly in his hand while driving. The hands-free kit is mounted at a predetermined position inside the vehicle, for example, a front panel, and is used while the mobile phone is mounted on the hands-free kit.

However, the conventional hands-free kit is inconvenient to use the hands-free kit by connecting the wired earphone to the microphone jack of the mobile phone as well as to mount the mobile phone to the hands-free kit after the user boards the vehicle. In addition, the present invention provides a wireless hands-free kit that can wirelessly transmit and receive using a mobile phone that outputs and inputs as an analog signal.

Accordingly, an object of the present invention is to provide a wireless hands-free kit that allows a user to communicate with the other party in a convenient state by carrying a mobile phone.

Another object of the present invention is to provide an economical wireless hands-free kit because it uses an existing mobile phone to input and output analog signals without purchasing a separate mobile phone for inputting and outputting digital signals.

The wireless hands-free kit according to the present invention for achieving the above objects is inserted into the microphone jack of the user's mobile phone and wired transmission / reception of incoming / outgoing signals or voice signals of the user and the other party in the analog state and wireless transmission / reception in the digital state with the main body. A first wireless transmitter / receiver, a microcomputer, a second wireless transmitter / receiver for wirelessly transmitting / receiving an incoming / outgoing signal from the transceiver and a voice signal of a user and the other party in a digital state, and a “hook on” or “hook off” the mobile phone; and a keypad for inputting a key signal to the microcomputer to wirelessly connect or block the second wireless transmitter / receiver to the transceiver, and convert the other party's voice signal transmitted in a digital state to the second wireless transmitter / receiver to analog. Voice signal received in analog state via microphone A converting unit converting the digital signal into a digital signal, and a digital processing unit outputting the user's voice signal to the converting unit by equalizing and removing the digital signal of the other party or the user's voice signal if it is the same as or similar to a previous signal; Amplifying unit for amplifying the voice signal and outputs to the speaker.

The first wireless transmitter / receiver converts an incoming signal or a voice signal of the other party from the mobile phone into an analog state into a digital state or transmits an outgoing signal or user voice signal of a digital state transmitted from the second wireless transmitter / receiver. A digital signal transmitted from the second wireless transmitter / receiver and a digital signal transmitted from the second wireless transmitter / receiver and a converter for converting the signal to the mobile phone and outputting the signal to the mobile phone. And a transceiver for receiving the signal.

In the above, the first and second radio transceivers are composed of a Bluetooth protocol communication chip.

1 is a circuit diagram of a wireless handsfree kit according to the present invention.

Explanation of symbols on the main parts of the drawings

10: wireless handsfree kit 11: micom

13: first wireless transmission and reception unit 15: converter

17: transceiver 19: second wireless transceiver

21: keypad 23: conversion unit

25: digital processing unit 27: amplifying unit

29: speaker 31: microphone

33: Cell Phone

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a circuit diagram of a wireless handsfree kit according to the present invention.

The wireless hands-free kit 10 according to the present invention includes a microcomputer 11, first and second wireless transceivers 13 and 19, a keypad 21, a converter 23, a digital processor 25, and an amplifier. 27, a speaker 29 and a microphone 31, wherein the first radio transceiver 13 is composed of a converter 15 and a transceiver 17. In the above, the wireless hands-free kit 10 includes a microcomputer 11, a second wireless transceiver 19, a keypad 21, a converter 23, a digital processor 25, an amplifier 27, and a speaker 29. And a first wireless transmission / reception unit 13 spaced apart from the main body formed of the microphone 31.

In the above, the microcomputer 11 controls the operations of the hands free kit, for example, the second wireless transceiver 19 and the digital processor 21.

The first wireless transmitter / receiver 13 is composed of a converter 15 and a transceiver 17, and is fitted into the microphone jack of the user's mobile phone 33. In the above, the first wireless transmission / reception unit 13 transmits / receives an incoming / outgoing signal or voice signals of the user and the other party to the cellular phone 33 in an analog state and wirelessly transmits and receives in the digital state with the main body. The converter 15 converts the incoming signal or the other party's voice signal input from the mobile phone 33 in the analog state into a digital state and outputs the digital signal to the transceiver 17, and inputs the digital state from the transceiver 17. The outgoing signal or the user's voice signal is converted into an analog state and output to the mobile phone 33. The transceiver 17 wirelessly transmits the digital signal converted by the converter 15 to the main body, and outputs the digital signal wirelessly transmitted from the main body to the converter 15.

Therefore, the first wireless transmitter / receiver 13 wirelessly connects the cellular phone 33 that inputs and outputs an analog signal to the main body of the wireless hands-free kit 10. Therefore, there is no cost to purchase a separate mobile phone that can be connected wirelessly with the main body of the wireless hands-free kit 10 is economical. The first wireless transmitter / receiver 13 may be implemented with various commercially available digital wireless communication chips, but is preferably implemented as a Bluetooth protocol communication chip.

The second radio transmitter / receiver 19 wirelessly transmits / receives an incoming / outgoing signal or voice signals of a user and the other party with the transceiver 17 of the first radio transmitter / receiver 13 in a digital state. Therefore, it is convenient because the user's mobile phone 33 can be used in the user's pocket or bag without being mounted on the main body of the hands-free kit 10. The second wireless transceiver 19 may be implemented with a variety of commercially available digital wireless communication chip, but preferably implemented as a Bluetooth protocol communication chip.

The keypad 21 inputs a key signal for " hook on " or " hook off " to the micom 11 by operating the key, and the micom 11 Under the control of the radio transceiver 17 of the first radio transceiver 13 and the second radio transceiver 19 is wirelessly connected or disconnected. In the above, when an incoming signal is transmitted from the other party's phone (not shown) to the mobile phone 33 or when an outgoing signal is transmitted from the user's mobile phone 33 to the other party's phone, by operation of a key of the keypad 21. Mobile phone 33 is "hooked on".

The converter 23 includes an A / D (Analog / Digital) converter and a D / A (Digital / Analog) converter. The conversion unit 23 converts a user's voice signal received in analog to a digital signal through a microphone 31 built into the main body of the wireless hands-free kit 10, and the transceiver of the first wireless transmission / reception unit 13 17) converts the other party's voice signal transmitted in the digital state to the second wireless transceiver 19 in analog.

The digital processing unit 25 adds and subtracts the other party's voice signal in the digital state input through the second wireless transmission / reception unit 19 and the user's voice signal digitally converted by the conversion unit 23 to reinforce the high and low sound and high frequency. Filter to remove the noise and equalize it to the actual sound quality. In this case, the digital processor 23 removes an input signal of the other party or the user's voice if it is the same as or similar to the previous signal to prevent an echo phenomenon. Also, the digital processor 23 processes the other party or the user's voice signal in a digital state to easily remove noise. So you can improve the call quality.

The user voice signal equalized by the digital processor 25 is transmitted to the transceiver 17 of the first radio transceiver 13 through the second radio transceiver 19, and the other party audio signal is amplified by After being amplified at 27), it is output through the speaker 29.

The operation of the wireless handsfree kit of the above-described configuration will be described.

When an incoming signal is generated from the other party's phone (not shown) to the user's mobile phone 33 or an outgoing signal is generated from the user's mobile phone 33 to the other party's phone, the keypad 21 is operated by pressing a key. Generate a hook on "signal. Accordingly, the microcomputer 11 controls the second radio transceiver 19 to be enabled by the "hook on" signal to "hook on" the mobile phone 33.

When the other party's voice signal is received in an analog state by the mobile phone 33, the signal is input to the first wireless transmitter / receiver 13, converted into digital signal by the converter 15, and then the wireless hands-free kit 10 is transmitted through the transceiver 17. Wirelessly transmits to the second radio transmitter / receiver 19. Accordingly, the voice signal of the other party transmitted to the second wireless transmitter / receiver 19 is inputted to the digital processor 25 and equalized by software under the control of the microcomputer 11 to completely remove, add and subtract high frequency noise to treble and bass. Reinforcement and output to the conversion unit (23). At this time, the digital processing unit 25 removes if the other party's voice signal input is the same as or similar to the other party's previously input voice signal to prevent the echo phenomenon.

Then, the other party's voice signal in the digital state equalized by the digital processor 25 is converted into analog by the converter 23 and then amplified by the amplifier 27 so as to be output as voice through the speaker 29.

When the user speaks while the mobile phone 33 is in the "hook on" state, the voice signal is input to the conversion unit 23 into the analog state through the microphone 31. Accordingly, the conversion unit 23 converts the voice signal to digital, and the digital processing unit 25 equalizes the digitally converted user voice signal by software under the control of the microcomputer 11 to completely remove and add high frequency noise. And subtract to reinforce the treble and bass. The user voice signal equalized by the digital processor 25 is wirelessly transmitted to the transceiver 17 of the first wireless transmitter 13 through the second wireless transmitter and receiver 19. Then, the converter 15 converts the user voice signal transmitted to the transceiver 17 into an analog state and inputs it to the user mobile phone 33. Accordingly, the mobile phone 33 inputs the input user voice signal in the analog state to the counterpart phone. To send.

As described above, the wireless hands-free kit according to the present invention inserts a first wireless transmitter / receiver configured as a converter and a transceiver into a microphone jack of a user's mobile phone, and wirelessly transmits and receives an analog signal in a digital state with a second wireless transmitter / receiver. You can use your phone in your pocket or bag without taking the handsfree kit.

Therefore, it is possible to use a mobile phone for inputting and outputting an analog signal, so it is economical because a mobile phone for inputting and outputting a digital signal is economical, and there is an advantage that the mobile phone can be conveniently used without taking the hands free kit.

Claims (3)

A first wireless transceiver configured to be inserted into a microphone jack of a user's mobile phone and wired / receive an incoming / outgoing signal or voice signals of the user and the other party in an analog state and wirelessly transmitting and receiving in a digital state with the main body; Microcomputer, A second wireless transmitter / receiver for wirelessly transmitting / receiving an incoming / outgoing signal or voice signals of a user and a counterpart in a digital state; A keypad for inputting a key signal for " hook on " or " hook off " to the microcomputer to wirelessly connect or block the second radio transceiver with the transceiver; A converter for converting the other party's voice signal transmitted in the digital state to the second wireless transmitter and receiver into an analog and converting the user voice signal received in the analog state through a microphone into a digital signal; A digital processor for equalizing and removing the voice signal of the counterpart or the user in the digital state if the same or similar to the previous signal, and outputting the equalized voice signal to the converter; Wireless hands-free kit comprising an amplifier for amplifying and outputting the equalized voice signal to the speaker. The method of claim 1, wherein the first wireless transmission and reception unit, Convert the incoming signal or the other party's voice signal input from the mobile phone into the analog state into the digital state or convert the digital signal from the second wireless transmitter / receiver from the digital state into the analog state and output it to the mobile phone. Converter, The wireless hands-free kit includes a transceiver for transmitting the incoming signal or the other party's voice signal digitally converted by the converter to a second wireless transmitter / receiver and receiving a digital signal or a user voice signal transmitted from the second wireless transmitter / receiver. . The wireless hands-free kit of claim 1 or 2, wherein the first and second wireless transceivers comprise a Bluetooth protocol communication chip.