JPS63253734A - Telephone set system for automobile - Google Patents

Abstract

PURPOSE:To recognize the incoming call of an automobile telephone set and to hold the call remotely by providing a portable small sized transmitter-receiver and providing a means sending a weak radio wave including incoming information. CONSTITUTION:When a call arrives in an automobile telephone set 1 via an antenna 33, a transmitter 2 is started and the weak radio wave including the incoming information signal 111 is sent via an antenna 30 and when a small sized transmitter-receiver 5 receives it via all antenna 32, a call tone rings from a speaker 12 to inform the arrival of call to the automobile telephone set 1. In closing a holding switch 11, the weak radio wave including a hold command signal 112 is sent and when the receiver 3 receives it, a holding control circuit 4 holds the telephone set 1. Thus, when the user leaves its automobile, the call is recognized by carrying the small sized transmitter-receiver 5. Moreover, the call is kept in the holding state by remote control.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a car telephone device installed in a car, and in particular, a method for recognizing incoming calls on the car phone device even when the user is away from the car. The present invention relates to a car telephone device system that can be used.

[Conventional technology]

Conventionally, this type of car phone device is installed in a user's car, and when it receives a call signal from a base station, it enters an incoming call state and outputs a sound from a calling device in the car phone device, such as a speaker. The user was notified of an incoming call by sending a call.

(Problems to be Solved by the Invention) The conventional car phone device described above has a large sound insulation effect when the car door and window are closed, so even if you are near the car and can answer immediately, The disadvantage is that you cannot hear the ringing tone to notify you of an incoming call and cannot answer it.

Further, since the switch for performing a hold operation such as issuing a hold tone is located inside the car, there is a drawback that even if you are outside the car and notice an incoming call, it takes time to perform the hold operation.

Currently, mobile phones and the like are being considered and put into practical use as a means of compensating for this type of drawback, but they are expensive and inconvenient to carry around at any time due to their weight and shape.

For mobile phones to be carried at any time, it seems appropriate to have a superimposition of about 1009, a shape about the size of a cigarette pack, and a battery life of about one month. As such, it is unlikely that pumice will be small, long-lasting, and inexpensive.

[Means for solving problems]

The car telephone device system of the present invention is connected to a car phone device mounted on a vehicle and the car phone device, and when the car phone device receives a call, it sends out a weak radio wave containing the incoming call information. a small portable transmitter/receiver, each having a transmitting means for transmitting a weak radio wave containing the incoming call information, and a means for generating a sound based on the incoming call information; The small transmitter/receiver is equipped with a transmitting means for transmitting a weak radio wave including a signal instructing to hold the incoming call by operating a switch, and the mobile phone device includes a receiving means for receiving a weak radio wave including the hold instruction signal. A means for placing the mobile phone device on hold in response to the hold instruction signal is connected therebetween.

[Effect]

Therefore, according to the present invention, when a user leaves a car, by carrying a small transceiver with him, the user can be aware of an incoming call from the car telephone device, and can also remotely put the incoming call on hold.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic block diagram illustrating one embodiment according to the present invention. The stationary car telephone device 1 is connected to an antenna 33 for transmitting and receiving, and is also connected to a transmitter 2, and the transmitter 1112 is connected to the antenna 30 for transmitting. 31 is a receiving antenna;
1 is connected to the reserved control circuit 4 via the receiver 3,
The control circuit 4 is connected to a car telephone device i1.

In addition, car phone equipment! i1. Transmitter 2. The receiver 3 and the hold control circuit 4 are mounted in the same housing, for example, in a vehicle vh such as an automobile.

The small transmitter/receiver 5 shown in the lower right of FIG. 1 is of a portable type and includes a transmitting/receiving antenna 32, a receiving section 22 connected to the antenna 32, a transmitting section 21, a squelch circuit 23 connected to the receiving section 22, and a squelch circuit 23 connected to the receiving section 22. It is comprised of a low frequency oscillation circuit 24 connected to a squelch circuit 23, a speaker 12 connected to the oscillation circuit 24, a hold switch 11 for remote control connected to a transmitter 21, and the like.

Here, the operation of the ai1 diagram will be explained. automatic 4i telephone equipment rl
11 receives a call via the antenna 33, the transmitter 2 is activated and sends out a weak radio wave containing the incoming call information signal 111 via the antenna 30. A small transceiver 5 transmits this to the antenna 3.
As a result, the speaker 12 emits an oscillating sound to inform the user that the automatic 11?1 talking device 1 is receiving a call.

In this case, when the user closes the hold switch 11 for remote control, a weak radio wave containing the hold instruction signal 112 is sent out from the antenna 32 as a result.

When the receiver 3 receives this via the antenna 31, the hold control circuit 4 calls the car telephone! ! 1 is in a pending state.

As shown in FIG. 1, an example of the internal configuration of the small transmitter/receiver 5, when the receiving section 22 activates the low frequency oscillation circuit 24 via the squelch circuit 23 and makes the speaker 12 sound, demodulation is performed. There is no need for complex circuits such as circuits.

Further, if the transmitter 21 also transmits only the carrier wave by operating the remote control hold switch 11, there is no need for a complex n-way such as a modulator.

Therefore, if the internal configuration of the small transceiver 5 is configured as described above, the circuit will be simpler than that of a mobile phone.
Small size, light weight, and low power consumption can be easily realized.

Here, to summarize the car telephone device system which is the embodiment of FIG. a transmitter for emitting signals, a receiver for receiving radio waves containing a hold instruction signal at a frequency different from the frequency emitted by the transmitter, and a circuit for placing the car telephone device on hold when receiving a signal containing the hold instruction signal. and a receiving section for receiving radio waves containing incoming call information, which is a separate part attached to the car telephone device, a low frequency transmitter that is activated when the radio waves are received, and a hold signal. It has a small transceiver consisting of a transmitter that emits weak radio waves containing radio waves, and a switch that operates the transmitter.

〔Effect of the invention〕

As explained above, the present invention enables the user to hear the ring tone of the car phone even when the user is away from the car by carrying the small transceiver attached to the car phone. Even if you don't have one, you can know about incoming calls, and you can also put the incoming calls on hold by remote control.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment according to the present invention. DESCRIPTION OF SYMBOLS 1... Car telephone device, 2... Transmitter, 3... Receiver, 4... Hold control circuit, 5... Small transceiver, 11... Hold switch for remote control, 12. ...Speaker, 21...Transmitter, 22...Receiver, 23...Squelch circuit, 24...Low frequency oscillation circuit.

Claims (1)

[Scope of Claims] 1) A car telephone device mounted on a vehicle, and a transmission that is connected to the car phone device and sends out weak radio waves containing incoming call information when the car phone device receives an incoming call. A portable telephone device system comprising: a means for receiving weak radio waves containing the incoming call information; and a small portable transmitter/receiver, each having a means for generating a sound based on the incoming call information. 2) The portable small transceiver includes transmitting means for transmitting a weak radio wave including a signal instructing to hold the incoming call by operating a switch, and the car telephone device transmits the hold instruction signal. 2. The automobile telephone device system according to claim 1, wherein means for placing the automobile telephone device on hold in response to a hold instruction signal is connected via a receiving means for receiving weak radio waves containing weak radio waves.