JPH0626349U - Car phone - Google Patents

Abstract

(57) [Summary] [Purpose] Voice signals from a plurality of hands-free microphones arranged at each seat are set by the hands-free microphone switching means to set the call state, and at the same time, by the control means to the telephone number designation means of the other party. By selecting an arbitrary hands-free microphone with a corresponding number and putting it in a call state, it is possible to use the hands-free microphone limited to the driver from any seat in the vehicle interior. A plurality of hands-free microphones 171 to 174 are provided in an automobile telephone having a telephone number designating means for selectively designating a telephone number of the other party by pressing a ten-key.
And a hands-free microphone switching means for selecting any one of the hands-free microphone 171 among the hands-free microphones 171 to 174 by switching to call or no call. Control means is provided for controlling by the designating means and selecting any of the hands-free microphones 171 corresponding to the number of the telephone number designating means to either call or no call.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention provides an automobile telephone, and in particular, an automobile telephone that can be provided for use by a driver and other passengers by installing the hands-free function of the automobile telephone in a plurality of seats.

[0002]

[Prior art]

 Conventionally, as a car telephone, a device as shown in FIG. 6 has been known. The mobile phone 1 includes a cradle 12 to which a handset 10 is connected via a cable cord 11, a speaker 15 which is also connected to the cradle 12 via a cord 13 and a radio 14, and a handset connected to the cradle 12. It has a free microphone 16, a transceiver 18 connected to the cradle 12 via a cable 17, and an antenna 19 connected to the transceiver 18. Then, in a hands-free call, the voice signal from the hands-free microphone 16 is input to the transceiver 18 via the cradle 12, modulated, and transmitted. On the other hand, the incoming voice signal is demodulated by the transceiver 18 and output via the cradle 12 to the dedicated speaker 15 of the radio 14 of the car audio system.

[0003]

[Problems to be solved by the device]

 However, in such a conventional technique, hands-free calls are limited to the driver, and the use in the seats other than the driver is due to the handset, and it is difficult to use the hands-free function in each seat. Met. Therefore, when a person in another seat used a hands-free call, it was necessary to move the hands-free microphone to that position or to speak with a voice that could reach the hands-free microphone. For this reason, the other party of the call has unclear sound quality that is very difficult to hear, and it is practically difficult for multiple parties to talk at the same time.

The present invention arranges a plurality of hands-free microphones at each seat, synthesizes the audio signals from the hands-free microphones in a cradle, or selects and uses any hands-free microphone to input to a transceiver. , Modulate and transmit. Then, by demodulating the incoming signal with a transceiver and outputting it to multiple speakers via the cradle, the use of a hands-free microphone, which was limited to the driver, can be used from any seat in the vehicle. The purpose is to provide a telephone.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention connects a plurality of microphones in an automobile telephone having a telephone number designating means for selectively designating a telephone number of the other side by pressing a ten-key, and the plurality of microphones are connected. The microphone switching means for selecting any one of the microphones for calling and non-calling by switching, and the microphone switching means is controlled by the telephone number designating means, and any microphone corresponding to the number of the telephone number designating means is controlled. And a control means for selecting whether to call or not.

[0006]

[Action]

 Voice signals from a plurality of hands-free microphones arranged in each seat are set by the hands-free microphone switching means to set the call state, and the control means selects an arbitrary microphone corresponding to the other party's telephone number designating means to make a call. Put in a state.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a block diagram showing a car telephone of the present invention.

FIG. 2 is a control block diagram of the present invention.

The car telephone 100 includes a cradle 130 to which a handset 110 is connected via a cable cord 120, and a speaker group 160 (161 to 164) connected to the cradle 130 via a curl cord 140 and a speaker muting box 150. ) And a hands-free microphone group 170 (171 to 174) connected to the cradle 130, a transceiver 190 connected to the cradle 130 via the cable 180, and an antenna 200 connected to the transceiver 190. A radio 210 of the car audio system is connected to the speaker mute box 150. As shown in FIG. 5, these are arranged in the front and rear seats of the passenger compartment.

As shown in FIG. 3, the handset 110 includes a key operation section 111 provided with a plurality of shift keys and a display section 112 for displaying an erroneous operation of the key operation section 111.

The control means such as the hands-free microphone switching means, the control means and the telephone number designating means of the present invention are all mounted inside the cradle 130.

Next, a specific circuit of each control means will be described with reference to FIG. A plurality of hands-free microphone groups 170 (171 to 174) installed in a plurality of seats in the vehicle compartment are connected to the contact points 310 to 313 of the microphone selection switch 300, which is a hands-free microphone switching means in the cradle 130. There is. The voice signals input from the plurality of hands-free microphones 171 to 174 are input to the transmission voice amplification circuit 400 via the microphone selection switch 300, supplied to the transceiver 190, modulated, and transmitted.

On the other hand, when the user operates the handset 110 to select any of the handsfree microphones 171 to 174, for example, the handsfree microphone 171, the key operation unit 111 of the handset 110 is operated. The hands-free microphone switching control circuit 500 which is the control means is controlled to turn on the contact 310 of the microphone selection switch 300 to select the hands-free microphone 171. Turning off the hands-free microphone 171 can be achieved by performing the same operation again. Then, the state of the handsfree microphone selection is displayed on the display unit 112 of the handset 110 to inform the operator of the suitability of the handsfree microphone selection. The hands-free microphones 172 to 174 can be selected by the same operation.

The received voice signal is communicated by the microphone 113 and the ear speaker 114 inside the handset 110 when the telephone is talked by the handset 110.

On the other hand, when the handset 110 is installed on a stand and is used in a hands-free state, the received audio signal is amplified by the received audio amplification circuit 600 in the cradle 130 and output from the speaker 131. It

At the same time, the received audio signal is connected to the car audio system 700 via the speaker mute box 150. The amplified signal is output to the plurality of speakers 161-164. The signal of the car audio system 700 is automatically muted when the call is received by the signals of the radio mute control circuits 900 and 910 from the telephone in both the handset and hands-free states. To be done.

Further, the car audio system signal and the telephone receiving voice signal are used as the telephone receiving voice signal when the telephone is received inside the car audio system 700 and when the telephone is not used. The audio system signal is automatically switched by the signal of the radio / telephone switching control circuit 800 of the telephone.

FIG. 4 is a flowchart showing a microphone switching operation by the handset 110, and the microphone switching operation will be described based on this flowchart.

When the shift key 113 of the key operation unit 111 of the handset 110 is pressed, the control unit inside the handset 110 determines the operation at a, and determines that it is an ON / OFF switching operation of the hands-free microphone 171-174. Then, in step b, it is determined whether or not the ten key is pressed. If the numeric keypad is not pressed, an error message is displayed on the display unit 112 of the handset 110 with c.

When the ten-key is pressed, it is determined whether the number of the ten-key pressed in d corresponds to the number of installed hands-free microphones. In this embodiment, the four handsfree microphones are set to 171-174. Therefore, when the pressed numeric keypad is other than 1 to 4, an error is displayed on the display unit 112 of the handset 110 by e.

When the corresponding number is pressed, a signal is output from the control unit of the handset 110 to the hands-free switching control circuit 500 of the cradle 130 at f, and the contact 310 of the microphone selection switch 300 is turned on / off. To do. That is, when the microphone selection switch 300 is ON, it is switched OFF, and when it is OFF, it is switched ON. This information is then stored in a memory mounted in the controller within the handset 110 at g.

Finally, at h, the ON / OFF state of the hands-free microphone is displayed on the display unit 112 for a certain time.

As shown in FIG. 5, these are arranged in the front and rear seats of the passenger compartment.

[0025]

[Effect of device]

 As described above, the voice signals from the plurality of hands-free microphones arranged in each seat are switched by the microphone switching means to set the call state, and the control means responds to the telephone number designating means of the other party. By selecting any microphone of the number and putting it in a call state, the hands-free microphone use, which was limited to the driver, can be used from any seat in the passenger compartment.

[Brief description of drawings]

FIG. 1 is a block diagram showing a car telephone of the present invention.

FIG. 2 is a control block diagram of the present invention.

FIG. 3 is a front view of the handset.

FIG. 4 is a flowchart for a microphone switching operation.

FIG. 5 is a layout explanatory diagram of a hands-free microphone and a speaker.

FIG. 6 is a configuration diagram showing a conventional car telephone.

[Explanation of symbols]

 100 Car Phone 110 Handset 130 Cradle 150 Speaker Mute Box 160 Speaker Group 161 to 164 Speaker 170 Handsfree Microphone Group 171 to 174 Handsfree Microphone 190 Transceiver 300 Handsfree Microphone Switching Means 400 Transmitting Amplifying Circuit 500 Control Means 600 Receiving Voice Amplifying Circuit 700 car audio system 800 radio / telephone switching control circuit

Claims (1)

[Scope of utility model registration request] 1. A car telephone having a telephone number designating means for selectively designating a telephone number of the other party by pressing a ten-key pad, a plurality of microphones are connected, and any one of the microphones is switched to make a call, Microphone switching means for selecting either of the non-call and the microphone switching means is controlled by the telephone number designating means, and any microphone corresponding to the number of the telephone number designating means is selected for either the call or the non-call. An automobile telephone equipped with a control means for controlling.