JPH0595328A - Portable telephone set - Google Patents

Abstract

PURPOSE:To easily find out the portable telephone set even in the case of missing or misplacing by comparing an electric field strength of a specific signal with a threshold level stored in a memory and using a light emitting section and a speaker so as to inform it when the electric field intensity is smaller. CONSTITUTION:A control signal generated from a control signal generating section 17 of a control signal generator 16 is sent from a transmission section 18 via an antenna 19. Then the control signal received by a reception section 19 via an antenna 9 of the portable telephone set 8 is inputted to an electric field intensity measurement section 11. The electric field intensity of the control signal is measured by the section 11 and the electric field intensity is compared with a threshold level stored in advance in a memory 12. When the electric field intensity is less than the threshold level, the electric field intensity measurement section 11 sends a signal to activate a control section 13, then a sound is outputted from a speaker 15 or a light emitting section 14 lights up an LED. Thus, a control signal generator 16 is carried, then it is informed to the possessor when the distance between the generator 16 and the portable telephone set 8 is apart over a prescribed distance and missing is prevented.

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 which can be searched for even when the portable telephone is lost or misplaced and which can be prevented from being illegally used at this time.

[0002]

2. Description of the Related Art In recent years, mobile phones for the purpose of being able to talk to anyone anytime, anywhere have become popular.

Only when a company handling such a mobile phone lends or sells an available mobile phone to a contractor who has exchanged a contract with this company In the hands of the contractor, the contractor can use the mobile phone. As long as the contractor has a contract to use the mobile phone with this company,
Each time you use a mobile phone, a telephone charge will be added, and this charge will be collected from the contractor.

At present, even if a person other than the contractor uses the mobile phone, the company assumes that the contractor used the mobile phone, and collects a telephone charge from the contractor. In this case, this fraud cannot be proved because no one other than the contractor can prove that it has been used. The reason is that the function to prevent fraud is not added to the mobile phone. When such fraud may occur, it is considered that the contractor has left the mobile phone somewhere or the mobile phone has been lost. However, if the mobile phone has a function of notifying the user of this when the mobile phone is about to be misplaced, the misplacement can be prevented in advance. Further, even when the mobile phone is lost, it is possible to prevent the unauthorized use of the mobile phone by a third party depending on whether or not the mobile phone has a function not to be used by a third party.

However, there have not been many measures taken against a case where the mobile phone is about to be misplaced or dropped. In addition, as a means to prevent third parties from using the mobile phone when it is lost, you can use the mobile phone only after inputting the personal identification number registered in advance on the mobile phone and then matching the personal identification number. That is the function to do. As a result, a person who does not know the personal identification number cannot use the mobile phone, so that an illegal number can be prevented. However, with such a conventional mobile phone, it is necessary to perform a troublesome operation in which the personal identification number must be input each time the user normally makes a call. Also, it was very inconvenient because I had to remember my PIN.

[0006]

As described above, in the conventional mobile phone device, no measures have been taken in the mobile phone in the case where it is about to be left behind or lost. In addition, if you lose this mobile phone, there is a method of entering a personal identification number each time you call, as a measure to prevent third parties from using it, but you must enter your personal identification number one by one. It was very inconvenient to handle a mobile phone as usual, including having to remember the number.

The present invention has been made in view of the above points, and even when a mobile phone is lost or misplaced, the whereabouts of this phone can be accurately grasped and the unauthorized use of this phone by a third party can be prevented. It is an object of the present invention to provide a portable telephone device that can be used.

[0008]

In order to achieve the above object, the present invention comprises a specific signal transmission device for transmitting a specific signal by radio waves and a mobile phone for receiving the specific signal. The telephone has an electric field strength measuring unit that measures the electric field strength of the received specific signal, a comparing unit that compares the electric field strength measured by the electric field strength measuring unit with a predetermined threshold value, and this comparing unit. As a result of the comparison of 1., when the electric field strength becomes smaller than the threshold value, a notification unit that emits light or sound is provided.

[0009]

The mobile phone, which has received the specific signal transmitted from the specific signal transmitting device, measures the electric field strength of this signal by the electric field strength measuring section provided therein. When the comparison unit determines that this value is larger than the threshold value, it is transmitted to the mobile phone by light or voice so that it can be found even if it is lost or misplaced.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to screens.

FIG. 1 is a block diagram showing the inside of a portable telephone device which is an embodiment of the present invention. In the figure,
Only the blocks of the configuration necessary for the present invention are shown, and the configuration normally attached to a mobile phone is not shown, but it is assumed that the configuration similar to the conventional one is provided.
First, the block diagram shown in FIG. 1 shows a configuration capable of realizing the following. Forget to leave your mobile phone
When lost, if a specific sound information known only to the owner of this phone is emitted, the specific sound information can be picked up by the microphone provided in the mobile phone device. When the information stored in the mobile phone device matches the information picked up by the microphone, the mobile phone device emits sound or light to notify the owner of the location of the mobile phone device. You can The sound information used here is information that collectively refers to voices and sounds. It is assumed that the mobile phone device shown in FIG. 1 is lost or misplaced due to some circumstances. The owner of the mobile phone device 1 (expressed as a contractor in the conventional example) is the information of a specific sound that only this owner has previously registered in this mobile phone, for example, the word "phone" is the owner. Yell out to reach as wide as possible. If the information "phone" can be picked up by the microphone 2 of the mobile phone device 1, the information "phone" is input from the microphone 2 into the mobile phone device 1. Microphone 2 of this mobile phone device 1
The information “Denwa” input from is converted into an electrical signal and input to the comparison unit 3. On the other hand, information about a specific sound stored in advance in the memory 4, in this case, the information “phone” is read from the memory 4 and input to the comparison unit 3. The comparison unit 3 compares the information “phone” read from the memory 4 with the information “phone” input from the microphone 2. As a result of the comparison by the comparison unit 3, if the two match, the control unit 5 is operated. The control unit 5 operates the speaker 6 and the light emitting unit 7. Then, the speaker 6 can make a beeping sound in a line, or the light emitting section 7 can make an LED, for example, illuminate to inform the owner of the location of the mobile phone device. In this example, the case where both the speaker 6 and the light emitting unit 7 are operated has been described, but only one of them may be operated.

Next, another embodiment of the present invention shown in FIG. 2 will be described below. FIG. 1A shows an internal block diagram of the mobile phone device. Further, FIG. 2B shows an internal block diagram of the control signal generator. By operating these devices, even if the mobile phone device 8 is about to be dropped or misplaced, if the distance between the control signal generation device 16 and the mobile phone device 8 is increased to some extent, the mobile phone device 8 will notify the owner. You can tell where you are. First, as is apparent from the block diagram shown in FIG. 2B, the control signal generator 1
In 6 as an example, the control signal generator 17 that constantly generates a control signal and the control signal generated by the control signal generator 17 are input to the transmitter 18. The control signal input to the transmitter 18 is transmitted from the transmitter 18 via the antenna 19.
It is transmitted as radio waves. In this case, the control signal generator 1
The control signal transmitted from 6 may not always be transmitted or may be intermittent transmission. This transmitted radio wave is shown in FIG.
The signal is received by the receiving unit 10 via the antenna 9 of the mobile phone device 8 shown in (a). The control signal received by the receiving unit 10 is input to the electric field strength measuring unit 11. The electric field strength measuring unit 11 measures the electric field strength of the control signal and obtains the electric field strength value. This electric field strength value is stored in the memory 1
2 is compared with a threshold value stored in advance, and when the electric field strength value is lower than this threshold value, the electric field strength measuring unit 1
A signal is output from 1 to operate the control unit 13. Then, the control unit 13 outputs a sound from the speaker 15 or causes the light emitting unit 14 to emit, for example, an LED. In this case as well, it does not matter if both the speaker 15 and the light emitting unit 14 are not operated, or only one is operated. Therefore, if the owner of the mobile phone device always wears the control signal generation device 16, the mobile phone device 8 and the control signal generation device 16 will be separated when the mobile phone device 8 is about to be dropped or lost. When the distance is a certain distance, the owner is informed by sound and light, so that the mobile phone device can be prevented from being lost in advance. Since the control signal generator has a simple structure and can be extremely miniaturized, a card-like one is desirable as a form that can be easily carried.

Next, still another embodiment will be described with reference to FIG. FIG. 3A shows an internal block diagram of the mobile phone device. Further, FIG. 3B is a block diagram showing the configuration of the base station. First, it is assumed that the mobile phone device 21 is lost and cannot be searched for. At this time, the owner of the mobile phone device performs the following operation because it is not used by a third party. The owner of the mobile phone device makes a call to the mobile phone device 21 from a general line regardless of a wireless line or a wired line. As shown in FIG. 3B, when a call is made to the mobile phone device 21 from a general line, the mobile phone device 21 is first connected to the base station 28 and specific voice information is input from the transmitter of this phone. For example, the voice information "phone" is input from the transmitter. This voice information is input to the voice information detection unit 32 of the base station 28.
If the voice information "phone" is detected by the voice information detecting unit 32, this causes the specific code generating unit 31 to operate. The specific code generation unit 31 generates a specific code and causes the transmission / reception unit 30 to input the specific code. Transmitter / receiver 30
Transmits this specific code via the antenna 29.
When this specific code is transmitted by radio wave, this radio wave is
It is received by the mobile phone device 21 shown in FIG.
The operation of the mobile phone device 21 after receiving this radio wave will be described below with reference to FIG. The transmitted radio wave is received by the antenna 20 of the mobile phone device 21,
At this time, since the mobile phone device 21 is in the normal state, the switch 22 is closed by the control unit 27. Then, this radio wave is received by the transmitter / receiver 23 via the switch 22, and the signal representing the specific code is transmitted to the comparator 2
Input to 4. On the other hand, the specific code stored in advance in the memory 25 is read out and input to the comparison section 24. The comparison unit 24 compares the two and if they match, a signal for operating the control unit 27 is output.
Then, the control unit 27 opens the switch 22 to stop the transmission / reception state of the mobile phone device 21. by this,
It is possible to prevent a third party from picking up this mobile phone device and using it illegally. In addition, when the mobile phone device 21 is currently not in the owner's hand and is lost, the mobile phone device 2 is lost.
When 1 is called, it is possible to inform the person who called now of the state of this call. This function will be described below. When a call is made to this mobile phone device from another telephone, the antenna 2 of the mobile phone device 21 is called.
A radio wave is received at 0, and this is input to the control unit 27.
The control unit 27 reads out the message stored therein from the memory 26. This message is, for example, for notifying the person who made the call that the mobile phone device 21 is currently lost, such as "This phone is not at the owner's hand." With such a function, it is possible to prevent the person who calls the mobile phone device 21 from being uncomfortable. In such an embodiment, the specific code is supposed to be transmitted from the base station 28, but the voice information is directly transmitted to the base station 28.
The same effect can be obtained by using the method of transmitting from the mobile phone device 21 and comparing it with the mobile phone device 21. Also, an example has been described in which specific voice information is sent from the general line to the base station, but it may be voice information instead of voice. Furthermore,
As means for stopping the transmission / reception state of the mobile phone device 21,
The example in which the switch 22 that interrupts signal transmission is provided between the antenna 20 and the transmission / reception unit 23 has been described. However, any means that can stop the transmission / reception of the mobile phone device by partially stopping the operation of the transmission / reception system or stopping the supply of power has the same effect as the present invention.

[0014]

As described above, according to the present invention, even if the mobile phone is lost or misplaced, the location of the mobile phone can be accurately grasped by the information of the specific sound. Further, even if the mobile phone cannot be found out, transmission / reception of the mobile phone from another phone can be stopped, so that the unauthorized use of the mobile phone device by a third party can be prevented in advance.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

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

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

[Explanation of symbols]

5, 13, 27 ... Control unit 3, 24 ... Comparison unit 4, 1
2, 25, 26 ... Memory 23, 30 ... Transceiver 6,
15 ... Speaker 7, 14 ... Light emitting part 11 ... Electric field intensity measuring part 17 ... Control signal generating part 30 ...
Specific code generator

Claims (1)

[Claims] 1. A specific signal transmitting device for transmitting a specific signal by radio waves, and a mobile phone for receiving the specific signal, wherein the mobile phone is an electric field for measuring the electric field strength of the received specific signal. An intensity measuring unit, a comparing unit that compares the electric field intensity measured by the electric field intensity measuring unit with a predetermined threshold value, and as a result of comparison of this comparing unit, the electric field intensity becomes smaller than the threshold value. A mobile phone device, comprising: a notification unit that emits light or sound when turned on.