KR100550393B1 - A car audio system having the function of wireless citizen band - Google Patents

Abstract

It is to integrate the car audio and the radio into the car audio by incorporating the transmitter and receiver of the radio into the car audio and to wirelessize the audio signal input terminal of the radio. The antenna, the FM / AM tuner, the signal processor, the signal amplifier and the speaker A sound source reproducing apparatus, a display, a key input unit and a micom, and an antenna for transmitting and receiving voice signals; A wireless voice signal input unit including a C-MIC for inputting a voice signal, an amplifier for amplifying the voice signal input to the C-MIC, and an FM transmitter for wirelessly transmitting the voice signal amplified by the amplifier; A radio comprising a living radio transmitter for amplifying and modulating a voice signal transmitted through an unvoiced voice signal input unit for wireless transmission through an antenna, and a radio receiver for receiving a radio signal amplified and modulated through a living radio transmitter. The walkie talkie module includes a walkie talkie module, which is connected to an antenna and is provided with car audio having a wireless walkie talkie function that is operated under the control of the microcomputer.

Wireless Home Radios, Car Audio, PTT Switches, FM Transmitters

Description

Car audio system with wireless walkie-talkie function {A CAR AUDIO SYSTEM HAVING THE FUNCTION OF WIRELESS CITIZEN BAND}

1 is a schematic structural block diagram of a conventional car audio system.

2 is a schematic structural block diagram of car audio having a wireless walkie-talkie function according to the present invention;

3 is a block diagram of a wireless voice signal input unit of the present invention.

4 is a flow chart showing operation in the wireless walkie talkie transmission mode of the present invention.

Figure 5 is a flow chart showing operation in the wireless walkie talkie reception mode of the present invention.

* Description of the symbols for the main parts of the drawings *

10, 10 ': antenna 20: FM / AM tuner section

30: signal processor 40: signal amplifier

50: speaker 60: sound source playback device

70: display 80: key input unit

90: micom 100: wireless home radio (CB) circuit module

110: wireless voice signal input unit

400: Wireless walkie talkie transmission mode operation flowchart

500: Wireless walkie-talkie reception mode operation flowchart

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to car audio, and more particularly, to car audio having a wireless walkie talkie function.

Referring to FIG. 1, a conventional car audio system is as follows.

As shown in FIG. 1, a conventional car audio system outputs an antenna 10 for receiving FM / AM broadcast radio waves transmitted from a broadcasting station, and separates an audible frequency from radio waves received by the antenna 10. A signal processing unit 30 for performing signal processing of an audible frequency signal output from the FM / AM tuner unit comprising a FM / AM tuner unit 20, a filter or a gain control circuit for passing a frequency in a specific range, A signal amplifier 40 for amplifying an analog voltage of an audible frequency into a power signal, a speaker 50 for outputting the signal amplified by the signal amplifier, a CDP 62, a cassette deck 64, and an MP3 player 66; A sound source playback device 60 such as a), a display 70 for displaying the operation state of the car audio, a key input unit 80 for inputting a key operation signal for controlling the operation of the car audio from the operator, and the respective It consists of a microcomputer 90 for controlling the components.

Since the conventional car audio as described above is basically installed in a vehicle, it is necessary to purchase and install a living walkie talkie (CB) separately in order to perform wireless communication, and there is no suitable position to mount such a walkie talkie inside the vehicle.

In addition, in order to use the living radio while using the car audio, the volume of the car audio should be used after turning off the car audio, and after use, the car audio needs to be reset again to an initial state, which causes troublesome drivers.

The present invention is to overcome the above-mentioned conventional problems, an object of the present invention is to integrate the car audio and the radio by embedding the transmitter and receiver of the radio in the car audio, and also the audio signal input terminal of the radio It is for the driver's convenience by wireless.

In order to achieve the above object, the present invention provides an antenna for receiving broadcast radio waves, an FM / AM tuner unit for separating an audible frequency from the radio wave received by the antenna, and an audio frequency signal separated by the FM / AM tuner unit. A signal processor for processing, a signal amplifier for amplifying the signal processed by the signal processor, a speaker for outputting the signal amplified by the signal amplifier, a sound source reproducing device for reproducing the stored sound source, and various operation signals of the operator are inputted A car audio comprising a key input unit, a display, and a micom for controlling each of the components, the car audio comprising: an antenna for transmitting and receiving a voice signal; A wireless voice signal input unit including a C-MIC for inputting a voice signal, an amplifier for amplifying the voice signal input to the C-MIC, and an FM transmitter for wirelessly transmitting the voice signal amplified by the amplifier; Life radio transmitter which amplifies and modulates the voice signal transmitted through the unvoiced voice signal input unit and transmits it wirelessly through an antenna, and a walkie-talkie receiver which receives the radio signal amplified and modulated through the radio unit. It includes a wireless walkie-talkie module, the walkie-talkie module is connected to the antenna, it is characterized in that it operates under the control of the microcomputer.

The wireless voice signal input unit may further include a remote mode switch key for transmitting a signal for switching the car audio to a wireless walkie talkie transmission mode, and the car audio may include a receiver for receiving a signal transmitted from the remote mode switch key. It further comprises.

According to the voice signal received by the wireless walkie talkie receiver, it is characterized in that the automatic switching to the walkie talkie reception mode.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

2 is a schematic structural block diagram of car audio having a wireless walkie-talkie function according to the present invention. The car audio having the wireless life radio function shown in FIG. 2 includes the antenna 10, the FM / AM tuner unit 20, the signal processing unit 30, the signal amplifier unit 40, and the speaker ( 50), a sound source reproducing apparatus 60, a display 70, a key input unit 80 and a microcomputer (90) is basically included, and for radio communication, an antenna 10 ', a wireless walkie talkie (CB) circuit The module 100 and the wireless voice signal input unit 110 are included.

The antenna 10 ′ is connected to the wireless walkie-talkie circuit module 100, and the wireless walkie-talkie circuit module 100 amplifies a voice signal transmitted through the wireless voice signal input unit 110 to provide a living radio. Receiving a signal from the radio transceiver (CB) transmitter 102 and the radio transceiver for wireless transmission through the antenna (10 ') by modulating the frequency band, and outputs through the speaker 50 of the car audio CB receiver 104 for the. The wireless walkie-talkie circuit module 100 is connected to the microcomputer 90, and performs the radio transmission and reception functions according to the control of the microcomputer.

3 is a block diagram illustrating a configuration of a wireless voice signal input unit of the present invention. The wireless voice signal input unit of FIG. 3 includes a condenser microphone (C-MIC) 112, an AMP 114, an FM transmitter 116, an antenna 118, and a remote mode switching key 119.

The driver's voice signal is input through the C-MIC 112. The voice signal input through the C-MIC is amplified by an amplifier (AMP) 114, and the amplified voice signal is transmitted to the FM transmitter 116 for wireless transmission. The voice signal is wirelessly transmitted to the car audio main body including the FM / AM tuner unit 20 via the FM transmitter 116 through the antenna 118.

In addition, the remote mode switching key 119 generates a signal for switching from the car audio function to the wireless lifestyle radio transmission mode. For example, a PTT (Push To Talk) switch or the like is replaced with a specific key of the remote mode switching key, and the remote mode switching key 119 generates a transmission mode switching signal according to the on / off of the PTT switch. Meanwhile, a receiving unit for receiving such a signal generated by the remote mode switching key is installed in the car audio main body, and according to the detection result of the receiving unit, the microcomputer switches the car audio to the wireless life radio transmission mode.

4 is a flowchart showing operation in the wireless walkie talkie transmission mode of the present invention.

First, a remote mode switching key is operated to generate a signal for switching the car audio function to the wireless walkie talkie transmission mode (410). The signal is detected by the receiver of the car audio, and the result detected by the receiver is recognized by the microcomputer (420), and the microcomputer converts the car audio into the wireless life radio transmission mode (430). The voice signal is transmitted through the car audio antenna through the C-MIC and the FM transmitter (440), and the transmitted voice signal is transmitted to the wireless life radio transmitter through the FM / AM tuner (450). The voice signal is transmitted through the wireless life radio transmitter 460.

5 is a flowchart illustrating an operation in a wireless walkie talkie reception mode of the present invention. First, the signal transmitted from the transmitting side is detected by the antenna (510). Then, the radio is detected as a voice signal through the CB receiver 520, and the microcomputer converts the car audio into the radio receiver receiving mode (530). Then, the signal received through the signal processor, the signal amplifier and the speaker outputs the signal (540).

As described above, the car audio having the wireless walkie-talkie function according to the present invention automatically switches from the car audio function to the wireless walkie talkie transmission and reception function when the walkie-talkie is used to perform the role of the wireless walkie-talkie.

What has been described above is only an exemplary embodiment of car audio having a wireless walkie talkie function according to the present invention, and the present invention is not limited to the above-described embodiment, and as claimed in the following claims, the present invention Without departing from the gist of the present invention, those skilled in the art to which the present invention pertains to the technical spirit of the present invention to the extent that various modifications can be made.

As described above, according to the car audio having the wireless walkie-talkie function of the present invention, by integrating the car audio and the walkie-talkie, the vehicle interior space utilization is increased. In addition, it can be used anywhere in the vehicle without limiting the length of the radio connector, and minimizes the driver's distraction.

Claims (3)

delete delete An antenna for receiving broadcast radio waves, an FM / AM tuner unit for separating an audible frequency from radio waves received by the antenna, a signal processor for processing an audible frequency signal separated by the FM / AM tuner unit, and processing at the signal processor A signal amplifier for amplifying the signal, a speaker for outputting the signal amplified by the signal amplifier, a sound source reproducing device for reproducing the stored sound source, a key input unit for inputting various operation signals of the operator, a display, and each component In the car audio composed of a microcomputer to control the, An antenna for transmitting and receiving a voice signal; A C-MIC for inputting the voice signal, an amplifier for amplifying the voice signal input to the C-MIC, an FM transmitter for wirelessly transmitting the voice signal amplified by the amplifier, and the car audio. A wireless voice signal input unit including a remote mode switch key for generating a signal for switching to a transmission mode; And A living radio transmitter for amplifying and modulating a voice signal transmitted through the wireless voice signal input unit and transmitting the radio signal through the antenna; and a radio receiver for receiving a radio signal amplified and modulated through the living radio transmitter; And, according to the voice signal received by the radio receiver, automatically switched to a radio receiver receiving mode; The car audio further includes a receiver for receiving a signal transmitted from the remote mode switch key, The walkie-talkie module is connected to the antenna and has a wireless walkie-talkie function, characterized in that operated under the control of the microcomputer.

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