JP2515077Z - - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incoming call notification device for a portable radio telephone as peripheral equipment of the portable radio telephone. 2. Description of the Related Art In recent years, wireless telephones, particularly portable wireless telephones, have become widespread. In general, these portable wireless telephones automatically receive a signal transmitted from a base station. One high-frequency signal (response signal) is transmitted to the base station to perform two-way communication, and no response signal is transmitted in the standby state. In the above-mentioned wireless telephone, for example, when used in a car, it is necessary to drive while talking with one hand, and there is a danger of causing a danger. (For example, in-vehicle communication devices for wireless telephones) have been devised. [0004] However, in the in-vehicle communication device for a wireless telephone as described above, the inconvenience and danger of opening the power supply of the device when a call is received from the wireless telephone in a standby state is reduced. In order to avoid this, the volume of the sound emitted from the audio amplifier circuit and the speaker is increased, which causes a problem of discomfort for the driver. In addition, especially in the case of a portable radio telephone, there is a problem that a ring tone in a public place such as a conference or a movie theater is annoying. There was an inconvenience of not being able to hear. The present invention has been made to solve the above problems and inconveniences, and an incoming call notification device that determines an operation according to whether or not a wireless telephone is in use, for example, a wireless telephone independent of a wireless telephone. It is an object of the present invention to provide an in-vehicle communication device, a vibration device instead of a bell, or a drive signal transmission device such as a long-distance bell alarm device and an answering machine tape recorder. [0005] Means for Solving the Problems] apparatus informing message received for portable wireless telephone of the present invention is independent of the portable radiotelephone,且
An incoming call notification device for a portable radio telephone carried by the portable radio telephone holder together with the portable radio telephone, wherein the specific frequency band transmitted by the portable radio telephone in response to a call signal from a base station to the portable radio telephone. The response radio wave of the portable radio telephone
Is a member equivalent to an antenna for receiving near-field radio waves that is received at a short distance, and the antenna phase
AC generated in the member corresponding to the antenna due to the response radio wave received by the member
Including at least one diode for detecting a voltage,
A detection circuit that outputs a detection voltage of the diode according to the change;
An amplifier for amplifying the detection voltage to be input, and a notification device driven by an output voltage of the amplifier. The incoming call alerting device of the present invention receives a response signal emitted when a portable radiotelephone located at a short distance from the incoming call alerting device by an antenna equivalent member receives a call from a base station or the like,
A current is obtained and detected by a detecting means to obtain a voltage corresponding to a change in the electric field. Next, the output voltage of the detecting means is amplified by the amplifying means, for example, a vibrating device instead of a bell,
It drives incoming notification means such as a light generator, a display, and a sound generator. An embodiment will be described with reference to the drawings. First, FIG. 1 is a circuit diagram of an embodiment of an auto switch of a voice amplifier (for example, an in-vehicle communication device for portable portable radio) of a portable radio telephone, and shows an antenna 10, a diode 20, a voltage amplifier or a comparator 30.
Is a control circuit. The control circuit connects the antenna 10 to the diode 2 of the circuit.
0 end 22 and the other end 21 to ground (COM). The voltage at the zero point (point 0) is used as one input of the voltage amplifier or the comparator 30, and the other input terminal is grounded. The antenna 10 may be changed to a metal rod, a coil, a lead wire, or a connection leg to a copper foil or an element on a circuit wiring, and receives a radio wave emitted from a portable wireless telephone. When the antenna 10 receives a radio wave, both ends of the antenna 10 generate a changing voltage difference. This voltage difference is in an AC state, and its absolute value is almost equal. The resulting average potential difference is a zero potential. The current flowing through the diode 20 is unidirectional, and when the top end of the antenna is at a negative potential with respect to the ground terminal, the current at the ground terminal may flow through the diode 20 because this negative potential is unevenly distributed with respect to the diode 20 in the forward direction. Although possible, the potential at the zero point is kept at almost zero potential. When the top end of the antenna 10 is at a positive potential with respect to the ground, the top end is located in the reverse direction with respect to the diode 20, so that no current flows to the ground and the average voltage at the zero point is about 1/2. That is, when the antenna 10 receives a radio wave, the zero point generates a weak positive voltage, and is amplified by the voltage amplifier or the comparator 30 and then connected to the power supply contact end 51 of the audio signal amplifier 50 or the audio signal. The input terminal or the output terminal is driven, and the open / close switch 40 of the power contact terminal 51 or the input terminal or the output terminal of the audio signal is controlled. When a call is being received, the portable radio telephone continuously emits radio waves. Therefore, if the audio signal amplifier 50 is in the operating state, the control circuit continuously operates the audio amplifier 50. After the communication is stopped, that is, when the portable radio telephone returns to the standby state and does not transmit a radio wave, the antenna 10 does not receive the radio wave. The speaker does not output sound either. The control circuit described above is a simple circuit composed of the antenna 10, the diode 20, the voltage amplifier or the comparator 30, and automatically switches to the voice signal amplifier 50 when a call is made to the portable radio telephone. Therefore, for example, when a call is made to a portable radio telephone in a standby state, such as the above-described in-vehicle communication device for a conventional radio telephone, there is no inconvenience of opening the power supply of the device, and It is quiet because there is no need to increase the volume in order to know that the driver has been hit, and there is no discomfort for the driver. FIG. 2 is a circuit diagram of another embodiment of the present invention. Here, a signal generation circuit (not shown) is connected to the voltage amplifier of the control circuit described in FIG.
And one transmitter 60 having a transmitting antenna is connected to form a control signal transmitter, and a receiver 70 having a receiving antenna is provided. During use of the mobile radiotelephone, the transmitter 60 is driven by the voltage output from the voltage amplifier or the comparator 30 to transmit a control signal, and the receiver 70 receives the control signal and receives the notification signal (vibration motor, The driving of a means (notifying that the portable radio telephone is being called) 80 by voice or light is controlled. According to the configuration of the present embodiment, it is possible to know that a call is being received even when the portable wireless telephone cannot be held. FIG. 3 is a circuit diagram of another embodiment of the present invention. Here, the output terminal of the voltage amplifier or the comparator 30 of the control circuit described in FIG. 1 is connected to the driving unit (the answering machine controller 90 in FIG. 3) of the incoming call notification device, and the output voltage from the voltage amplifier or the comparator 30 is connected. Controls the driving of the incoming call notification device (answering machine controller in the example of FIG. 3). As described above, when the portable radio telephone receives a call, the incoming call notification device (the answering machine controller 90 in the example in the figure) uses the voltage output from the voltage amplifier or the comparator 30.
, It is possible to quietly know the incoming state of the portable wireless telephone within a short distance (for example, if a vibrating device is used as the incoming call notification device, the incoming state of the portable wireless telephone within a short distance without sound can be detected. Can know). In addition, the switch of the answering machine can be opened and closed. [0011] By using the incoming call notification device for a portable radio telephone of the present invention, the portable radio telephone is calling from the base station at another position, especially in a short distance from the portable radio telephone, or You can know if you are waiting. The detection means and control circuit of the incoming call alerting device of the present invention can be constituted by a simple circuit, and the portable wireless telephone is configured to be driven by radio waves emitted during an incoming call. An incoming call notification device for a telephone can be provided.

[Brief description of the drawings]     FIG.   FIG. 3 is a circuit diagram of one embodiment of the present invention.     FIG. 2   FIG. 4 is a circuit diagram of another embodiment of the present invention.     FIG. 3   FIG. 4 is a circuit diagram of still another embodiment of the present invention.     [Explanation of symbols]   10 Antenna   20 Diode (detection means)   30 Voltage amplifier or comparator (amplifying means)   50 audio amplifier   60 transmitter   70 receiver   80 Incoming call notification means   90 Answering machine controller

Claims (1)

[Claims for Registering Utility Model] [Claim 1] Independent of a portable wireless telephone and by a portable wireless telephone holder
Wherein a portable apparatus informing message received for portable wireless telephone set mobile with radiotelephone I, especially of the portable radio telephone sends in response to the call signal from the base station for its own device
Near radio wave that receives a response radio wave in a constant frequency band at a short distance from the portable radio telephone
A receiving antenna-equivalent member and the antenna corresponding to the response radio wave received by the antenna-equivalent member
Said at least one diode for detecting an AC voltage generated in the member;
It has a detection circuit that outputs a detection voltage of the diode according to a change in an electric field due to radio waves, an amplifier that amplifies the detection voltage output by the detection circuit, and a notification device that is driven by the output voltage of the amplifier. An incoming call notification device for a portable radio telephone.