JPH081526U - Wireless telephone peripheral equipment control circuit - Google Patents

Abstract

(57) [PROBLEMS] To provide a kind of peripheral equipment control circuit for a wireless telephone that determines whether or not the wireless telephone is in use and enhances the function of the peripheral device. According to the present invention, a control circuit is provided with an antenna, a metal rod, a coil, or a connection terminal of a copper foil or an element directly on a circuit wiring board, receives a radio wave emitted from a wireless telephone, and uses this antenna as a diode or the like. Connect one end of the detector, connect the other end of the detector to the ground, send the voltage obtained by the radio wave received by the antenna to the voltage amplifier or comparator, and control the peripheral equipment of the wireless telephone by the amplified voltage To do.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a type of peripheral equipment control circuit for a wireless telephone, and more particularly to a circuit for determining whether or not the wireless telephone is in use and enhancing the functions of peripheral equipment.

[0002]

[Prior art]

 Recently, wireless telephones have become widespread, but conventional general wireless telephones automatically transmit one high-frequency signal to the base station when a signal transmitted from the base station is received, and perform two-way communication. However, high-frequency signals are not transmitted in the standby state.

To describe the shortcomings of conventional wireless telephones, for example, when used in a vehicle, it is necessary to talk while driving with one hand, which may be dangerous. For this reason, devices have been devised that allow users to talk without holding the handset. However, such a conventional device has been designed to avoid the inconvenience and danger of opening the power supply of the device when a call is received while the wireless telephone is waiting in the vehicle. Was increased, which caused discomfort to the driver. In addition, the ringing tone of a wireless telephone is annoying during meetings and in public places such as movie theaters. In addition, the use of wireless phones at construction sites caused inconvenience in work, and in some cases the ringing tone could not be heard.

[0004]

[Problems to be solved by the device]

 It is an object of the present invention to provide a control circuit that determines whether the wireless telephone is ringing, in use, or on standby. That is, the present invention mainly provides an antenna in the peripheral equipment control circuit of the wireless telephone to receive the radio wave emitted by the wireless telephone, converts it into a current, processes this current with a detector, and then removes one weak voltage difference. Then, this is amplified by a voltage amplifier or a comparator. Therefore, it is an object to control peripheral equipment such as an auto switch of a voice amplifier without a handset, a vibration device instead of a bell, a remote distance bell warning device, and an automatic opening / closing device of an answering machine tape recorder.

[0005]

[Means for Solving the Problems]

 According to the present invention, a control circuit is provided with an antenna, a metal rod, a coil, or a connection terminal of a copper foil or an element directly on a circuit wiring board, which receives a radio wave emitted by a wireless telephone and uses this antenna as a detector such as a diode. It connects to one end and connects the other end of the detector to the earth, sends the voltage obtained by the radio wave received by the antenna to the voltage amplifier or comparator, and controls the peripheral equipment of the wireless telephone by the amplified voltage.

[0006]

[Mode for Carrying Out the Invention]

 An antenna mainly provided in the peripheral equipment control circuit of the wireless telephone receives the radio waves emitted by the wireless telephone, converts it into a current, processes this current with a detector, and then obtains one weak voltage difference and uses this as a voltage amplifier. Alternatively, it is amplified by a comparator. This controls peripheral equipment such as an auto switch for a voice amplifier without a handset, a vibration device in place of a bell, a remote distance bell alarm device, and an automatic opening / closing device for an answering machine tape recorder.

[0007]

【Example】

 Examples 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 of a radio telephone, in which an antenna 10 is provided in a control circuit. The antenna 10 is a metal rod, a coil, a lead wire, or a circuit wiring board. It may be replaced with the upper copper foil or the connection leg of the element, and receives radio waves emitted from the wireless telephone. When the antenna 10 receives a radio wave, both ends of the antenna 10 generate a varying voltage difference. This voltage difference is in an alternating current state, and its plus and minus values are substantially equal. The resulting average potential difference is therefore zero potential. The antenna 10 is connected to the end 22 of the diode 20 of the circuit and the other end 21 of the diode 20 is connected to earth (COM). The current that flows in this diode 20 is unidirectional, and when the top end of the antenna has a negative potential with respect to the ground end, this negative potential is forward biased with respect to the diode 20, so the current at the ground end is Although it is possible to flow 20, the potential at the 0 point is maintained at approximately zero potential. When the top end of the antenna 10 has a positive potential with respect to the ground, this positive potential is reverse biased with respect to the diode 20, and no current flows to the ground. At this time, the average voltage at the 0 point is about 1/2 of the voltage. That is, when the antenna 10 receives a radio wave, the zero point generates a weak positive voltage of the automatic telephone receiver, which is amplified by the voltage amplifier or the comparator 30 and is then connected to the audio amplifier. The contact leg 51 or the voice signal input end or the output end is driven, and the power contact leg 51 or the input / output end switch of the voice signal is controlled. In the activated state, the voice signal amplifier 50 of the voice amplifier of the radio telephone automatic reception device continuously emits radio waves when the radio telephone is hung up, so that this circuit continuously activates the voice signal amplifier 50. After the communication is stopped, that is, when the radio telephone returns to the standby state and does not emit the radio wave, the antenna 10 does not receive the radio wave. That is, the potential obtained by this circuit also disappears, the switch 40 is opened, and the speaker of the radio telephone does not generate any sound.

The control circuit described above is composed of the antenna 10, the diode 20, the voltage amplifier or the comparator 30, and the switch 40, and is safe and convenient because it is quiet and does not require manual operation.

FIG. 2 is a circuit diagram of another embodiment of the present invention. One oscillator 60 is connected to the output 31 of the voltage amplifier or comparator 30 of the control circuit described above so that the output 31 of the voltage amplifier or comparator 30 produces a voltage when the radio telephone is in use. The transmitter 60 drives a signal to generate a signal, and the receiver 70 receives the signal, and then controls a warning device (vibration motor, warning by voice or light, etc.). Therefore, even if the wireless telephone cannot be held, it is possible to know that the telephone is being called.

FIG. 3 is a circuit diagram of still another embodiment of the present invention. Here, the output terminal 31 of the voltage amplifier or the comparator 30 is directly controlled by a warning device (a warning by a vibration motor, voice or light, etc.). Alternatively, when connected to an answering machine controller 90 and a radio call is received, the output 31 of the voltage amplifier or comparator 30 produces a voltage to control the watch or answering machine controller 90, as described above. As a result, you can receive quietly within a short distance, do not disturb people, and know whether or not you are on a call. You can also open and close the answering machine.

[0011]

[Effect of device]

 By providing the peripheral equipment control circuit of the wireless telephone of the present invention, it is possible to determine whether the wireless telephone is ringing, in use, or on standby.

[Brief description of drawings]

FIG. 1 is a circuit diagram of the present invention.

FIG. 2 is a circuit diagram of another embodiment of the present invention.

FIG. 3 is a circuit diagram of still another embodiment of the present invention.

[Explanation of symbols]

 10 antenna 20 diode 21 terminal part 22 terminal part 30 voltage amplifier or comparator 31 output terminal 40 switch 50 voice signal amplifier 51 power contact leg 60 transmitter 70 receiver 90 answering machine controller

Claims (2)

[Scope of utility model registration request] 1. A peripheral equipment control circuit for a wireless telephone, which is mainly provided with an antenna in the control circuit, receives an electric wave emitted by the wireless telephone, and connects the antenna to one end of a detector such as a diode to detect a wave. A peripheral equipment control circuit for a radio telephone that connects the other end of the equipment to ground, sends the voltage obtained by the radio waves received by the antenna to a voltage amplifier or comparator, and controls the peripheral equipment of the radio telephone by the amplified voltage. 2. The peripheral equipment control circuit for a wireless telephone according to claim 1, wherein the antenna provided in the controller may be replaced by a metal rod, a coil, or a connection terminal of a copper foil or an element directly on a circuit wiring board.