JPH11355957A - Electronic appliance and electromagnetic wave interference preventing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic appliance and an electromagnetic wave interference device which capable of positively-restricting usage, at such a place as to permit no negligence of an influence of an electromagnetic wave. SOLUTION: A function of automatically shutting off power supply if a power supply OFF command signal is detected from a received signal is provided for an electronic appliance 1 generating electromagnetic waves. There is also provided an electromagnetic wave interference preventing device 2 which announces that power supply should be shut off if it detects electromagnetic waves generated from the electronic appliance 1, and transmits a power supply OFF command signal if it receives electromagnetic waved again after a fixed time passes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a portable telephone, a PH
The present invention relates to an electronic device such as a computer, a personal computer, a word processor or the like that directly or indirectly generates an electromagnetic wave, and an electromagnetic wave interference prevention device for preventing an electromagnetic wave interference by the electronic device.

[0002]

2. Description of the Related Art Conventionally, some electronic devices which are easily affected by electromagnetic waves are provided with measures such as providing a shield. Further, for example, there is an electronic device disclosed in Japanese Patent Application Laid-Open No. 6-21904, which detects an electromagnetic wave which becomes an obstacle and issues a warning if the strength is greater than a predetermined value.

[0003]

By the way, in recent years, mobile phones and PHSs have become remarkably widespread, and as a result, there are more opportunities to affect other electronic devices (malfunction) or to inconvenience others. ing. Therefore, places where the effects on electronic devices cannot be ignored (for example, hospitals and aircraft)
Also, use is restricted in places where discomfort to the surroundings cannot be ignored (for example, in a car), but since it is uncertain that can be left to the consciousness of the carrier, Not necessarily, it causes various problems.

[0004] Also, electronic devices such as personal computers and word processors that generate electromagnetic waves in a secondary manner may affect other electronic devices such as noise.

SUMMARY OF THE INVENTION In view of the above circumstances, it is an object of the present invention to provide an electronic device and an electromagnetic wave prevention device capable of reliably restricting use in a place where a device which may be affected by electromagnetic waves is installed. .

[0006]

In order to achieve the above object, according to the present invention, a power-off command signal is detected from a received signal in an electronic device mainly for generating electromagnetic waves, such as a mobile phone or a PHS. And a power-off means for turning off the power of the device main body when the power-off command signal is detected by the detection means.

According to a second aspect of the present invention, in an electronic device such as a personal computer or a word processor which generates an electromagnetic wave in a secondary manner, a receiving means for receiving a power-off command signal, and a power-off command signal received by the receiving means. And a power-off means for turning off the power of the device main body.

According to a third aspect of the present invention, there is provided an electromagnetic wave detecting device for detecting an electromagnetic wave generated from an electronic device such as a mobile phone or a PHS which mainly generates an electromagnetic wave or a secondary device such as a personal computer or a word processor which generates an electromagnetic wave. Means, an alarm generating means for generating an alarm when an electromagnetic wave is detected by the electromagnetic wave detecting means, and a power-off command transmission for transmitting a pulse-like power-off command signal when the electromagnetic wave is detected by the electromagnetic wave detecting means. Means.

According to a fourth aspect of the present invention, in the electromagnetic interference prevention apparatus according to the third aspect, the power-off instruction transmitting means continuously transmits a power-off instruction signal.

According to a fifth aspect of the present invention, in the electromagnetic wave interference prevention device according to any one of the third and fourth aspects, the power-off command transmitting means is configured to be fixed after the electromagnetic wave detecting means first detects the electromagnetic wave. A power-off command signal is transmitted when the electromagnetic wave is detected again by the electromagnetic wave detection means at the time when the time has elapsed.

According to the first aspect of the present invention, when the power-off command signal is detected from the received signal, the power of the main body of the apparatus is automatically turned off, so that the location where the apparatus which may be affected by the electromagnetic wave is installed or the noise is not allowed is specified. In this place, the power-off command signal is always transmitted, so that the use of the present electronic device can be reliably restricted. That is, when the electronic device is brought to a place where an electronic device which may be affected by electromagnetic waves is installed or a specific place where noise is not allowed, the power is automatically turned off and the electronic device becomes unusable.

According to the second aspect of the present invention, when the power-off command signal is received, the power supply of the main body of the apparatus is automatically turned off. Therefore, in a place where an electronic apparatus which is likely to be affected by electromagnetic waves is installed or in a specific place where noise is not allowed, By transmitting the power-off instruction signal, use of the electronic device can be reliably restricted. That is, as described above, when the electronic device is brought to a place where the electronic device which may be affected by the electromagnetic wave is installed or a specific place where noise is not allowed, the power is automatically turned off and the electronic device becomes unusable.

According to a third aspect of the present invention, when an electromagnetic wave generated from an electronic device such as a portable telephone, a PHS, a personal computer, a word processor or the like that directly or indirectly generates an electromagnetic wave is detected, an alarm is generated and a power-off command signal is transmitted. At this time, if the electronic device turns off its own device by receiving the power-off command signal, the power is automatically turned off by receiving the power-off command signal transmitted from the electromagnetic interference prevention device. . Therefore, it is possible to reliably restrict the use of the electronic device for turning off the power of the own device by receiving the power off command.

The power-off command signal may be of a continuous output type in addition to the pulse output type.

In addition to transmitting the power-off command signal simultaneously with the detection of the electromagnetic wave, when the electromagnetic wave is detected again after a lapse of a predetermined time (for example, 15 seconds) from the first detection of the electromagnetic wave, the power-off command signal is transmitted. May be transmitted (claim 5). In this way, the time for turning off the power can be given to the holder of the electronic device that is the electromagnetic wave generation source, so that it is possible to avoid a situation in which the caller is disconnected without permission during a call.

[0016]

FIG. 1 is a block diagram showing the configuration of an embodiment of an electronic apparatus and an electromagnetic wave interference prevention device according to the present invention.

The electronic device 1 shown in FIG. 1 is a portable telephone having a function of turning off the power of the device main body by detecting a power-off command signal from a received signal. In addition, the electromagnetic wave interference prevention device 2 according to the present embodiment receives the electromagnetic wave from the electronic device 1 and announces that the owner of the electronic device 1 should be turned off, and after receiving the electromagnetic wave first, It has a function of transmitting a power-off command signal if the power is not turned off within a predetermined time (for example, 15 seconds).

The electronic device 1 includes a power-off signal receiving circuit 3 and a power-on / off control circuit 4 as shown in FIG. The power-off signal receiving circuit 3 detects a power-off command signal from the received signal, and when detecting the power-off command signal, outputs the signal. The power-on / off control circuit 4 turns off the power by receiving a power-off command signal from the power-off signal receiving circuit 5.

As shown in FIG. 1, the electromagnetic wave interference prevention device 2 includes an antenna 5, an electromagnetic wave reception circuit 6, an attenuation detection circuit 7, an announcement control circuit 8, a speaker 9, a power-off instruction circuit 10, , A transmission method selection circuit 11 and a power-off signal transmission circuit 12.

The electromagnetic wave receiving circuit 6 receives an electromagnetic wave having a transmission frequency used in the electronic device 1 and outputs it as an electromagnetic wave reception signal. The attenuation amount detection circuit 7 limits an unusable area of the electronic device 1 and outputs an announcement command signal only when the electromagnetic wave reception circuit 6 receives an electromagnetic wave of a predetermined level or more. The announcement control circuit 8 takes in the announcement command signal from the attenuation detection circuit 7 to generate a voice message prompting the power-off of the electronic device 1 by voice synthesis, and outputs the voice message from the speaker 9 (for example, “power off immediately”). Please ”). When the announcement control signal is fetched again after a predetermined time (for example, 15 seconds) from the time when the announcement command signal is fetched for the first time, the electronic control unit 8 determines that the power of the electronic device 1 has not been turned off. Is output. The power-off command circuit 10 outputs a power-off command signal by receiving a power control signal from the announcement control circuit 8.

The transmission method selection circuit 11 receives the electromagnetic wave of the electronic device 1 and transmits a power-off command signal after receiving the electromagnetic wave as shown in FIG. 2, and a constant power-off command signal as shown in FIG. One of the continuous output types to be transmitted is selected, and an arbitrary one can be selected by a selection switch (not shown). If the continuous output type is selected, the power off command signal is not used. The pulse output type is preferably used in places where the influence of electromagnetic waves is severe, and the continuous output type is preferably used in places where the effects of electromagnetic waves are relatively moderate. In any case, the most suitable one can be selected according to the installation location and surrounding conditions.

When the pulse output type is selected by the transmission selection method selection circuit 11, the power-off signal transmission circuit 12 outputs a power-off command signal from the power-off command circuit 10.
According to the transmission command signal from the transmission selection method selection circuit 11,
The power off command signal shown in FIG. 2 is transmitted. The power of the electronic device 1 is turned off at the fall of the pulse-like power-off command signal. On the other hand, when the continuous output type is selected by the transmission selection method selection circuit 11, a power-off command signal is constantly transmitted as shown in FIG. Then, the transmission command signal is no longer output from the transmission selection method selection circuit 11, and the transmission of the power-off command signal is stopped. The power of the electronic device 1 is turned off at the transmission stop timing (fall) of the power-off command signal.

Next, the operation of the electronic device 1 and the electromagnetic wave interference prevention device 2 having the above-described configurations will be described. In this case, the electromagnetic wave interference prevention device 2 is installed in an unusable area where use of the electronic device 1 is prohibited, and the power is always turned on.

<When the Pulse Output Type is Selected> The user carrying the electronic device 1 enters the unusable area and uses the electronic device 1, or enters the unusable region while using the electronic device 1. Upon entry, the electromagnetic wave from the electronic device 1 is received by the electromagnetic wave prevention device 2. When receiving the electromagnetic wave from the electronic device 1, the electromagnetic wave interference prevention device 2 first outputs a voice message prompting to turn off the power and starts timekeeping. Then, if the electromagnetic wave from the electronic device 1 cannot be received after a lapse of a predetermined time (15 seconds), the output of the voice message is stopped assuming that the user of the electronic device 1 has turned off the power. On the other hand, if the electromagnetic wave from the electronic device 1 can be received even after the elapse of the predetermined time, the power-off instruction signal is transmitted assuming that the power of the electronic device 1 has not been turned off. The electronic device 1 detects this power-off command signal at the rising timing, and turns off the power at the falling timing.

<When Continuous Output Type is Selected> A power-off command signal is continuously transmitted from the electromagnetic wave interference prevention device 2, and in this state, the user carrying the electronic device 1 enters the unusable area. When the user uses the electronic device 1 or enters an unusable area with the electronic device 1 used, the electromagnetic wave interference prevention device 2 first outputs a voice message prompting to turn off the power and starts timekeeping. . Then, if the electromagnetic wave from the electronic device 1 cannot be received after a lapse of a predetermined time, the user of the electronic device 1 turns off the power and stops outputting the voice message. On the other hand, if the electromagnetic wave from the electronic device 1 can be received even after the elapse of the certain time, the transmission of the power-off command signal is stopped assuming that the power of the electronic device 1 has not been turned off. The electronic device 1 turns off the power at the falling timing of the power-off command signal.

As described above, in this embodiment, the function of automatically turning off the power when the power-off command signal is received by the electronic device 1 is provided, and an announcement to turn off the power when an electromagnetic wave from the electronic device 1 is detected is issued. An electromagnetic wave interference prevention device 2 having a function of transmitting a power-off command signal for turning off the power of the electronic device 1 when an electromagnetic wave is detected again after a certain time has elapsed.

Therefore, in a place where a device susceptible to electromagnetic waves is installed or in a specific place where noise is not allowed, the power of the electromagnetic wave source device is forcibly turned off, thereby preventing any accidents due to the influence of the electromagnetic waves. Not only can it be possible, but also the uncertain state relying on the manners of the wearer can be assured. Further, since the power-off command signal transmission method can be selected from two types, a pulse output type and a continuous output type, it is possible to select the most suitable one according to the installation location and surrounding conditions. In this way, the effects of electromagnetic waves from a wide variety of electronic devices that can become electromagnetic wave source devices such as mobile phones, PHSs, personal computers, and word processors, which have become widespread in recent years, can be reduced, and social responsibility for the mobile phone is avoided in advance. can do.

In the above embodiment, the electromagnetic wave from the electronic device 1 such as a mobile phone which directly generates the electromagnetic wave is detected. However, the electromagnetic wave is generated as a secondary device such as a personal computer or a word processor. Similarly, an electronic device that performs the detection may detect an electromagnetic wave and transmit a warning and a power-off command signal. In this case, it is needless to say that the personal computer, the word processor and the like are provided with a receiving means for receiving the power-off command signal, and a power-off means for turning off the power of the device main body when the power-off command signal is received by the receiving means. No. Further, in the above-described embodiment, the power-off command signal is transmitted after a certain time from when the electromagnetic wave from the electronic device 1 is first received, but the power-off command signal is transmitted when the first electromagnetic wave is received. You may do it.

[0029]

As described above, according to the first and second aspects of the present invention, electromagnetic waves are forcibly applied to a place where a device susceptible to electromagnetic waves is installed or a specific place where noise is not allowed. By turning off the power of the source device, it is possible to prevent any accidents due to the influence of electromagnetic waves, and to ensure the uncertain state relying on the manners of the wearer.

According to the third, fourth and fifth aspects of the present invention, an alarm is generated when an electromagnetic wave generated from an electronic device such as a mobile phone, a PHS, a personal computer, a word processor or the like that directly or indirectly generates an electromagnetic wave is detected. At the same time, a power-off command signal is transmitted. At this time, if the electronic device has a function of automatically turning off the power of its own device by receiving the power-off command signal, the power of the electromagnetic wave source device is forcibly turned off, and thereby the influence of the electromagnetic wave In addition to preventing any accidents, it also ensures that the uncertain situation that relied on the manners of the wearer can be assured.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an electronic apparatus and an electromagnetic interference prevention apparatus according to an embodiment of the present invention.

FIG. 2 is a waveform diagram showing a pulse output type power-off command signal of the electromagnetic wave interference prevention device of the embodiment shown in FIG. 1;

3 is a waveform diagram showing a continuous output type power-off command signal of the electromagnetic wave interference prevention device of the embodiment shown in FIG. 1;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 electronic equipment 2 electromagnetic wave interference prevention device 3 power off signal receiving circuit 4 power on / off control circuit 5 antenna 6 electromagnetic wave receiving circuit 7 attenuation amount detection circuit 8 announcement control circuit 9 speaker 10 power off command circuit 11 transmission method selection circuit 12 power off Signal transmission circuit

Claims (5)

[Claims] An electronic device mainly for generating electromagnetic waves, such as a mobile phone or a PHS, detects a power-off command signal from a received signal, and the power-off command signal is detected by the detecting device. An electronic device comprising: a power-off means for turning off the power of the device body. 2. An electronic device, such as a personal computer or a word processor, which generates an electromagnetic wave as a secondary signal, a receiving means for receiving a power-off command signal, and a power-off command signal received by the receiving means. An electronic device, comprising: power-off means for turning off power. 3. An electromagnetic wave detecting means for detecting an electromagnetic wave generated from an electronic device mainly for generating electromagnetic waves such as a mobile phone or a PHS or a secondary electronic device such as a personal computer or a word processor for generating electromagnetic waves. An alarm generation unit that generates an alarm when an electromagnetic wave is detected by the electromagnetic wave detection unit, a power-off command transmission unit that transmits a pulse-like power-off command signal when an electromagnetic wave is detected by the electromagnetic wave detection unit, An electromagnetic interference prevention device comprising: 4. The electromagnetic interference prevention device according to claim 3, wherein the power-off instruction transmitting means continuously transmits a power-off instruction signal. 5. The electromagnetic wave interference prevention device according to claim 3, wherein the power-off command transmitting unit has passed a predetermined time after the electromagnetic wave detection unit first detected the electromagnetic wave. An electromagnetic wave interference prevention device, wherein a power-off command signal is transmitted when an electromagnetic wave is detected again by the electromagnetic wave detecting means at a point in time.