KR19990034880A - Car radio with cordless phone function - Google Patents

Abstract

The present invention relates to a vehicle radio, and more particularly to a vehicle radio having a wireless telephone function, the present invention does not need to install a separate wireless telephone by adding a wireless telephone function to the vehicle radio, so The advantage is that space can be used efficiently. In addition, the same elements, such as an antenna, a signal receiver, a signal amplifier, and a speaker, among the elements constituting the vehicle radio and the wireless telephone can be used as a combination, thereby reducing the parts and the cost.

Description

Car radio with cordless phone function

The present invention relates to a vehicle radio, and more particularly to a vehicle radio having a radiotelephone function.

In general, as shown in FIG. 1, a vehicle radio includes an antenna 10 for receiving FM / AM broadcasting radio waves of a broadcasting station, and a tuner unit for separating and outputting an audible frequency from radio waves received from the antenna 10 ( 11), a signal processing section 12 configured to perform a signal processing of an audible frequency signal output from the tuner section 11, including a filter or a gain control circuit for passing only a specific frequency region, and an analog voltage of an audible frequency. And a speaker 14 for outputting the signal amplified by the signal amplifier 13.

On the other hand, an automobile radiotelephone consists of an antenna for both transmitting and receiving, a radio and a telephone. The radio has a reception and transmission function for performing wireless communication with the radio base station, and not only transmits and receives calls and voice signals, but also wireless line control (calling, calling signal processing, etc.) according to instructions from the base station, and signal reception functions of the telephone. It also has a control circuit. The telephone is composed of a microphone, a speaker, a power switch, a ten key and a function key, and is operated by a person using the telephone. In addition, recently, a mobile phone that is simply organized by integrating an antenna, a radio, and a telephone function has become popular.

These conventional car radios and cordless telephones are used completely independently, but in terms of their functions, there is a signal reception function for wirelessly receiving signals from the outside of the vehicle, and a function of designating a radio channel and tuning a radio telephone. Similarities exist in mechanical configuration, such as the need for a separate key for functioning.

Therefore, the present invention has been made in view of this point, the purpose is to mount the function of the radiotelephone in the car radio to reduce the parts for performing the same function, such as signal reception and the efficient use of space accordingly It is to provide a vehicle radio with a radiotelephone function that is made possible.

In order to achieve this object, a vehicle radio having a radiotelephone function according to the present invention is a radio base station in a vehicle radio which separates an audible frequency from an FM / AM broadcast wave of a broadcasting station received through a radio antenna and outputs it through a speaker. An antenna for transmitting / receiving a signal for wireless communication with the antenna, a transceiver for selectively controlling signal transmission and reception through the dual transmission / reception antenna, and an audible frequency separated from radio waves received from the transmission / reception antenna and the radio antenna A signal receiver for identifying and outputting data and voice signals required for communication control while outputting, a mode selection switch for selecting whether to perform a function of a radio or a cordless telephone, a radio broadcasting channel selection, and a call channel number are inputted. Received key input section and voice input from user The signal receiving unit and the signal transmitting unit are controlled according to an input signal of a microphone receiving a call, a voice signal input from the microphone, and amplifying and amplifying the amplified voice signal and outputting the signal to the antenna through a transceiver. And a control unit which collectively controls the radiotelephone function and the radio function.

The key input unit of the vehicle radio with a wireless telephone function of the present invention is characterized in that it is provided in the handle center of the vehicle.

In addition, the key input unit is provided on one side of the instrument panel of the vehicle.

1 is a block diagram showing the configuration of a conventional vehicle radio,

2 is a control system showing a schematic configuration of a vehicle radio with a radiotelephone function according to the present invention;

3 is a schematic configuration diagram of a vehicle radio of the present invention.

*** Explanation of symbols for main parts of drawing ***

20: radio antenna, 21: signal receiver,

22: signal amplifier, 23: speaker,

24: key input section, 25: telephone transmission and reception antenna,

26: water splitter, 27: signal transmitter,

28: microphone, 29: mode selector switch,

30: control unit.

Hereinafter, with reference to the accompanying drawings, the configuration and operation effects of a vehicle radio having a radiotelephone function according to a preferred embodiment of the present invention will be described in detail.

2 is a control system diagram showing a schematic configuration of a vehicle radio with a wireless telephone function according to the present invention.

As shown in FIG. 2, a vehicle radio having a wireless telephone function according to the present invention transmits and receives a signal for radio communication with a radio antenna 20 and a radio base station for receiving an FM / AM broadcast wave of a broadcasting station. An audible frequency from a radio wave received from the radio antenna 20, a transmitter / receiver antenna 25 for a telephone, a transmitter and receiver 26 for selectively controlling signal transmission and reception through the transceiver antenna 25, A signal receiver 21 for discriminating and outputting data and a voice signal for communication control from a signal input through the transmitter / receiver 26 and outputting the voice signal output from the signal receiver 21. A signal amplifier 22 for amplifying a signal, a speaker 23 for outputting a signal amplified by the signal amplifier 22, and a wireless telephone function and a radio function collectively controlled Is a control unit 30, a mode selection switch 29 for selecting a function of a radio and a cordless telephone from a user, a key input unit 24 provided for selecting a radio broadcasting channel and dialing a telephone number, The microphone 28 receives a voice signal, and under the control of the controller 30, modulates and amplifies the voice signal input from the microphone 28, and outputs the voice signal to the antenna 25 through the transceiver 25. It comprises a signal transmitting unit 27 to be.

On the other hand, Figure 3 is a schematic configuration diagram of a vehicle radio having a wireless telephone function according to the present invention, the key input section 24 is provided on the front operation portion of the radio for channel selection and dialing of the radio. In this case, the key input unit 24 may be provided with a plurality of function keys including a separate ten key and a transmission key for dialing in the center of the instrument panel or the handle if necessary. In addition, the radio antenna 20 for receiving the radio waves of the radio can be used in combination with the transmitting and receiving antenna 25 for the wireless telephone, and if necessary, the transmitting and receiving antenna for the wireless telephone can be provided separately from the antenna for the radio. .

Hereinafter, the operation and operational effects of the vehicle radio with a wireless telephone function of the present invention having the above-described configuration will be described in detail.

First, when the user selects the mode selection switch 29 in the radio mode, the control unit 30 determines this and controls the signal receiver 21 to receive only broadcast radio waves received from the radio antenna 20. At this time, the signal receiver 21 selects a broadcast wave of a desired frequency from among various types of broadcast station wavelengths received from a radio station, and separates and outputs a signal wave (audible frequency) from the broadcast wave (high frequency called a carrier wave).

In addition, the signal amplifier 22 amplifies an analog signal of an audible frequency output from the signal receiver 21 and outputs it through the speaker 23.

On the other hand, when the user selects the mode selection switch 29 in the telephone mode, the control unit 30 controls the signal receiving unit 21 to block the signal received from the radio antenna 20 and the dual-use antenna 25 for the telephone It receives a signal received from. At this time, the signal receiving unit 21 receives the incoming control channel and checks whether there is a call from the base station. In addition, since the data necessary for the communication control is transmitted by voice while the call is started and the communication channel is received, the data and the voice are identified so that each signal is sent to the speaker through the controller and the signal amplifier.

On the other hand, if it is determined that the user inputs the telephone number of the counterpart to which the user wants to call, the controller 30 determines whether the key input unit 24 operates the call request signal to the corresponding call channel of the counterpart through the signal transmitter 27. Will be sent. At this time, when a call with the other party is connected, the controller 30 controls the signal transmitter 27 to receive a user's voice signal input from the microphone 28, modulate and amplify the voice signal, and output the modulated signal to the handset splitter 26. In this case, the transmitter and splitter 26 outputs a signal received from the base station through the antenna 25 and a signal input from the signal transmitter 27. In addition, the call signal received from the call counterpart is converted into an audible frequency through the signal receiver 21 and then amplified by the signal amplifier 22 and output through the speaker 23 so that the user can listen.

The vehicle radio having a wireless telephone function according to the present invention can be implemented without various modifications within the range allowed by the technical idea of the present invention without being limited to the above-described embodiment.

As described above, a vehicle radio having a wireless telephone function according to the present invention does not need to install a separate wireless telephone by adding the wireless telephone function to the vehicle radio, thereby effectively utilizing the space inside the vehicle. . In addition, the same elements, such as an antenna, a signal receiver, a signal amplifier, and a speaker, among the elements constituting the vehicle radio and the wireless telephone can be used as a combination, thereby reducing the parts and the cost.

Claims (3)

In the vehicle radio which separates an audible frequency from the FM / AM broadcast wave of the broadcasting station received through the radio antenna 20 and outputs it to the speaker 23, An antenna 25 for transmitting and receiving signals for wireless communication with a wireless base station, A transmitter and receiver 26 for selectively controlling signal transmission and reception through the transmission and reception antenna 25; A signal receiver 21 which separates and outputs an audible frequency from radio waves received from the transmission and reception antenna 25 and the radio antenna 20 and identifies and outputs data and voice signals necessary for communication control; A mode selection switch 29 for selecting whether to use a radio and a cordless telephone, A key input unit 24 for receiving a radio broadcast channel selection and a call channel number; A microphone 28 for receiving a voice signal input from a user, A signal transmitter 27 for modulating and amplifying a voice signal input from the microphone 28 and outputting the modulated and amplified voice signal to the antenna 25 through the transceiver 26; And a controller 30 which controls the signal receiver 21 and the signal transmitter 27 according to the input signal of the mode selection switch 29 to collectively control the radio telephone function and the radio function. Car radio with cordless phone function. 2. The vehicle radio according to claim 1, wherein the key input unit (24) is provided at the center of the handle of the vehicle. 2. The vehicle radio according to claim 1, wherein the key input unit (24) is provided on one side of the instrument panel of the vehicle.