JP2000004479A - Portable telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the portable telephone set where transmission of a radio wave to induce malfunction of various precision devices is completely stopped so as to surely prevent a heavy accident due to malfunction. SOLUTION: A transmission regulation device 102 sends a transmission regulation signal from a transmission antenna section 106. At application of power to a portable telephone set 101, a reception antenna section 107 receives the transmission regulation signal and a demodulation circuit section 108 demodulates it. Then a control section 109 compares the demodulated signal with a predetermined signal. When the demodulation signal is coincident with the predetermined signal, the control section 109 discriminates that the received signal is the transmission regulation signal and controls the operation of a radio wave transmission section 110 to stop transmission of a radio wave.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone device, and more particularly to a portable telephone device that stops transmitting radio waves when a transmission control signal is received.

[0002]

2. Description of the Related Art Conventionally, a portable telephone device which is subject to transmission restriction by a transmission restriction device is disclosed in JP-A-10-42371.
Is described in Japanese Patent Application Publication No. This portable telephone device is a general portable telephone device having no special additional functions or components, but the transmission restricting device has components including a receiving / transmitting unit, a control unit, and a speaker. Operation can be performed.

[0003] First, a transmission / reception unit of a transmission control device transmits a dummy signal. Since this dummy signal is the same type of signal as the signal transmitted by the base station to the portable telephone device, when the portable telephone receives this dummy signal, it performs the same operation as in a normal incoming call, and sends a signal to the base station. Reply. Since the signal for the base station can also be received by the transmission / reception unit of the transmission control device, the transmission control device receives this signal, detects that the portable telephone device is in use, and outputs the signal to the transmission control device. The speaker issues a warning by sound, and the transmission / reception unit emits a radio wave that interferes with the call of the portable telephone device.

[0004]

However, in the conventional portable telephone device, although the speaker of the transmission restricting device warns that the call is stopped, the speaker using the portable telephone device is specified and warned. It is difficult to do so, and warnings are not effective if they are not specified. Further, when the person using the portable telephone device is not in a position where the warning of the speaker of the transmission restricting device can be heard, the warning effect is ineffective.

Further, although the transmission / reception section of the transmission restricting device interferes with the telephone call, it cannot reliably stop the transmission of the radio wave from the portable telephone device. In a facility or the like, there is a problem that various precision devices may malfunction and cause a serious accident.

The present invention has been made in view of the above, and has been made in the vicinity of a user of a medical pacemaker, in an airplane,
It is an object of the present invention to provide a portable telephone device that can completely stop transmission of radio waves that may cause malfunctions of various precision devices in a medical facility or the like and can reliably prevent a serious accident caused by a malfunction.

[0007]

Means for Solving the Problems In order to solve the above problems, the present invention has taken the following means.

[0008] The invention relating to the portable telephone device according to the first aspect is a receiving means for receiving a transmission restriction signal transmitted from the transmission restriction device, and stops transmission of radio waves when the receiving means receives the transmission restriction signal. And a transmission stopping means.

According to this configuration, the portable telephone device stops transmitting radio waves when the receiving means receives the transmission restriction signal transmitted from the transmission restriction device, so that the user turns off the power supply of the portable telephone device. Even if the user has forgotten to turn off, the transmission of radio waves can be reliably stopped. Therefore, it is possible to fundamentally solve the problem of causing various precision devices to malfunction and cause a serious accident near a user of a medical pacemaker, in an airplane, in a medical facility, and the like.

According to a second aspect of the present invention, in the portable telephone device of the first aspect, when the receiving unit receives the transmission restriction signal, a warning display unit for displaying a warning indicating that transmission is restricted is provided. It adopts the configuration to do.

According to this configuration, the receiving means receives the transmission restriction signal transmitted from the transmission restriction device,
Since the portable telephone device stops transmitting radio waves and displays a warning indicating that transmission is restricted, the user of the portable telephone device is informed that he / she is currently in an area where telephone communication is restricted. It can notify the person directly and does not cause anxiety that the portable telephone device may be out of order.

According to a third aspect of the present invention, there is provided a transmission control apparatus according to the first or second aspect, wherein the portable telephone apparatus has a frequency band other than a communication frequency band, and A configuration is provided that includes a transmitting unit that transmits a transmission restriction signal in a frequency band other than the frequency band that causes malfunction of devices existing around the device.

[0013] According to this configuration, the transmission regulation signal is not a frequency band that may cause a malfunction due to malfunction of various precision devices in a medical pacemaker, an airplane, a medical facility, or the like. Since it is in the band, not only the radio wave transmitted from the portable telephone device but also the transmission control signal itself does not cause the above-mentioned serious accident. The malfunction of various precision devices can be caused not only by radio waves in the frequency band in which electronic components inside the various precision devices operate, but also by harmonics and other factors that can occur due to the environment around the devices. Therefore, the frequency band other than the frequency band that causes a malfunction in the device differs depending on the target device,
For example, the frequency band of AM radio can be considered.

According to a fourth aspect of the present invention, there is provided a transmission control method in which the transmission control device transmits a transmission control signal, and the portable telephone device stops transmitting radio waves when the transmission control signal is received. Are adopted.

According to this configuration, the transmission restricting device transmits the transmission restricting signal, and the portable telephone device receives the transmission restricting signal and stops transmitting the radio wave. Even if the user forgets to turn off, the transmission of radio waves can be reliably stopped. Therefore, it is possible to fundamentally solve the problem of causing various precision devices to malfunction and cause a serious accident near a user of a medical pacemaker, in an airplane, in a medical facility, and the like.

[0016]

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

FIG. 1 is a block diagram showing the configuration of a portable telephone device 101 and a transmitting telephone device 102 according to one embodiment of the present invention. The portable telephone device 101 is carried by a user, and the transmitting telephone device 102 is installed in a medical facility, an airplane, or the like.

First, the configuration and operation of the transmitting telephone device 102 will be described with reference to FIG. Transmission telephone device 10
2 includes a signal generation unit 103, a modulation circuit unit 104, a power amplification unit 105, and a transmission antenna unit 106. The signal generation unit 103 is a unit that generates a transmission restriction signal, generates a predetermined signal with the portable telephone device 101, for example, a signal sequence based on a pseudo random noise code, and outputs the signal sequence to the modulation circuit unit 104. I do.

The modulation circuit unit 104 is a circuit unit that performs AM modulation in the AM radio band on the signal output from the signal generation unit 103. The modulated signal is output to the power amplification unit 105 as a transmission control signal. Here, the reason why the AM modulation of the AM radio band is performed is that the radio wave in this band does not cause the transmission control signal itself to malfunction the precision equipment and is easy to transmit and receive.

The power amplifying section 105 amplifies the transmission restriction signal output from the modulation circuit section 104, amplifies the transmission restriction signal so that it reaches a predetermined range, and outputs the amplified signal to the transmission antenna section 106. This predetermined range is a range sufficient to prevent the malfunction of the precision equipment, and is set according to the resistance of the precision equipment to unnecessary radiation.

The transmission antenna unit 106 includes the power amplifying unit 10
5 is an antenna for transmitting the transmission restriction signal amplified in 5 to the air. For example, the transmission antenna unit 1 is mounted on a precision medical device.
06 can be installed to transmit weak radio waves in the AM radio frequency band that can reach several meters around it. In this case, the portable telephone device 101 within a range of several meters around the medical precision instrument is restricted from transmitting radio waves.

The transmission control signal may be transmitted at all times, may be transmitted only while the precision medical equipment is turned on, or may be transmitted only when a specific operation of the precision medical equipment is performed. It may be performed only during the state.

Next, the configuration of the portable telephone device 101 will be described with reference to FIG. The portable telephone device 101
Receiving antenna unit 107, demodulation circuit unit 108, control unit 10
9, a radio transmission unit 110 and a warning display unit 111. The receiving antenna unit 107 is a bar antenna that receives the transmission restriction signal transmitted from the transmitting telephone device 102, and is an antenna for the AM radio frequency band, which is different from the transmitting and receiving antenna for communication.

The demodulation circuit unit 108 includes the receiving antenna unit 10
7 is a circuit section for demodulating the transmission restriction signal received at 7, and outputs the demodulated signal to the control section 109. The control unit 109 controls the operation of the radio wave transmission unit 110 and the warning display unit 111, and stops the operation of the radio wave transmission unit 110 while receiving the transmission restriction signal, and issues a warning to the warning display unit 111. indicate.

Radio wave transmitting section 110 is a section for transmitting radio waves for a call to a base station. The warning display unit 111
This part displays a warning when transmission restrictions are imposed.
The warning display unit 111 may be a display unit that performs a text warning by also using as a liquid crystal display unit that displays a telephone number of a caller, a message received from the caller, and the like. A display unit that issues a warning by lighting the element may be used.

Next, the operation of the portable telephone device 101 having the above configuration will be described with reference to the flowchart of FIG. When the portable telephone device 101 is turned on, in steps (hereinafter abbreviated as ST) 201 to ST203, the reception antenna unit 107 receives a radio wave in some AM radio band and the demodulation circuit unit 108 transmits the received radio wave. Demodulate.
Next, control section 109 compares the demodulated signal with a predetermined signal. When the two signals do not match, the receiving antenna unit 107 receives the radio wave again. However, when the demodulated signal matches the predetermined signal, ST204
Proceed to.

Next, in ST204, control section 109 controls the operation of radio wave transmission section 110 and stops transmission of radio waves.
Therefore, it is no longer possible to make a call using the portable telephone device 101, and it is possible to completely prevent transmission of radio waves that would cause a malfunction of precision equipment.

Further, in ST205, a warning indicating that transmission is restricted for the portable telephone device 101 is displayed on the warning display section 111. Therefore, the user of the portable telephone device 101 can be directly notified that he / she is in the area where the call is currently restricted, and the portable telephone device 10
It does not cause anxiety that 1 is out of order.

As described above, the portable telephone device 101 according to the present embodiment is capable of transmitting the transmission restriction signal by installing the transmission telephone device 102 in a medical facility or the like and transmitting the transmission restriction signal.
Since it becomes impossible to transmit radio waves from the portable telephone device 101 in the vicinity of the device 02, malfunction of the precision equipment can be reliably prevented.

[0030]

As described above, according to the portable telephone device of the present invention, transmission of radio waves that may cause malfunctions of various precision equipment can be completely stopped, and serious accidents due to malfunctions can be reliably prevented. Can be.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a portable telephone device according to one embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the portable telephone device of the embodiment.

[Explanation of symbols]

 Reference Signs List 101 portable telephone device 102 transmission control device 103 signal generation unit 104 modulation circuit unit 107 reception antenna unit 109 control unit 110 radio wave transmission unit 111 warning display unit

Claims (4)

[Claims] 1. A receiving means for receiving a transmission restriction signal transmitted from a transmission restriction device, and transmission stopping means for stopping transmission of radio waves when the receiving means receives the transmission restriction signal. Portable telephone device. 2. The portable telephone device according to claim 1, further comprising a warning display unit for displaying a warning that transmission is restricted when said receiving unit receives said transmission restriction signal. 3. The portable telephone device according to claim 1 or 2, wherein malfunctions occur in devices that are in a frequency band other than the frequency band for telephone calls and that are present around the portable telephone device. A transmission restricting device comprising transmitting means for transmitting a transmission restricting signal in a frequency band other than a frequency band to be generated. 4. A transmission control apparatus according to claim 1, further comprising: a transmission step of transmitting a transmission restriction signal by the transmission restriction apparatus; and a transmission stop step of stopping transmission of radio waves when the portable telephone device receives the transmission restriction signal. Transmission regulation method.