JP2001177639A - Portable telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable telephone set for stopping a communication function by a shock at the time of loosing it in order to prevent not only loosing but also illegal use by the third party. SOLUTION: The set is provided with a vibration sensor 16, a vibration detecting part 15, an incoming call sound generation part 19 and a CPU 11. Then, when a shock or strong vibration is added to the set, the sensor 16 generates a signal corresponding to the strength of this vibration. The part 15 compares the output of the sensor with a threshold and when the vibration exceeds the threshold, the part 15 outputs an interruption signal to the CPU 11. The part 19 receives a control signal outputted from the CPU 11 based on this interruption signal and generates an alarm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone having a function of preventing loss or a function of preventing unauthorized use.

[0002]

2. Description of the Related Art In recent years, the service of mobile phones has expanded,
Because it is now possible to send and receive not only telephone messages but also short messages and e-mails, the use of such devices is becoming increasingly widespread. In addition, portable telephone terminals have been reduced in size and weight, making it easier to carry, and the convenience of making a telephone call anytime, anywhere has been further improved, and the use thereof has been further promoted. However, while the portability is improved due to the reduction in size and weight, opportunities for loss and theft are increasing. In addition, there is an increasing number of cases in which a third party who has obtained a lost or stolen mobile phone is illegally used and a large telephone charge is charged to the user of the mobile phone registered with a mobile communication company. . This increase in fraudulent use is due to the lack of a quick way for users who have registered that they have been abused. Conventionally, as a countermeasure to prevent unauthorized use, a security number is set in advance on a mobile phone, and when using it, the user enters this security number to release the lock function or the user contacts the mobile communication company and loses it. For example, a method has been considered in which the telephone number of a stolen mobile phone is set to be unusable.

[0003]

However, in the above-mentioned conventional measures for preventing unauthorized use, in the case of using a security number, the lock function must be released by inputting the security number when using a mobile phone. There is a problem that operability is poor because it cannot be used. In the case of contacting the mobile communication company to change the settings, complicated procedures are required, and even if the registered phone number is set to unusable, it is stored in the mobile phone. Information may be read and misused.

[0004] The present invention has been made in view of the above points, and has as its object not only to prevent the loss of a mobile phone but also to prevent unauthorized use by a third party, and to prevent communication by an impact at the time of loss. It is an object of the present invention to provide a mobile phone whose function is stopped.

[0005]

Means for Solving the Problems In order to solve the above problems, the invention according to claim 1 includes a communication unit that performs transmission and reception by radio with a base station, an operation unit for a call operation, A vibration sensor that detects vibration of a mobile phone in a mobile phone including a ring tone generation unit that generates a ring tone, a memory that stores call information, and a control unit that controls the function of each unit. Is compared with the preset vibration threshold, and when the vibration intensity exceeds the threshold,
A vibration detection unit that generates a detection signal; and an alarm generation unit that receives a control signal output from the control unit based on a signal input from the vibration detection unit and generates an alarm sound.

[0006] The invention described in claim 2 is the invention according to claim 1.
Wherein the alarm generation means outputs an alarm from the ring tone generation unit using a frequency different from the frequency of the ring tone.

[0007] The invention according to claim 3 provides the invention according to claim 1.
2. The mobile phone according to claim 1, wherein the alarm output by the alarm generating means is a voice message.

According to a fourth aspect of the present invention, there is provided a communication unit for transmitting and receiving signals to and from a base station by radio, an operation unit for a call operation, a ring tone generation unit for generating a ring tone, and call information. In a mobile phone equipped with a memory for storing and a control unit for controlling the function of each unit, a vibration sensor for detecting vibration of the mobile phone, and comparing the output of the vibration sensor with a preset vibration threshold, A vibration detection unit that generates a detection signal when the vibration intensity exceeds a threshold value, and a function of stopping the function of the communication unit by a control signal output from the control unit based on a signal input from the vibration detection unit. Stopping means for releasing a function stop of the communication unit based on a control signal output by the control unit when a signal for canceling the function stop input from the operation unit matches the information stored in the memory; Characterized by providing the function stop canceling means for.

The invention described in claim 5 is the same as the claim 4.
3. The mobile phone according to claim 1, wherein the signal for canceling the function stop input from the operation unit is a password stored in the memory in advance.

[0010]

(First Embodiment) A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the mobile phone according to the embodiment. In this figure, a mobile phone includes a communication unit 18 that performs wireless transmission / reception via an antenna 22;
A voice processing unit 17 that encodes voice input from a microphone 20 or decodes an input digital signal and outputs voice from a speaker 21, a ring tone generation unit 19 that outputs a ring tone from a speaker 23, a vibration sensor 16 , A vibration detection unit 15, a memory 12 for storing a telephone number and a communication program, and a display unit 13 for displaying a reception state and a called number.
And an operation unit 14 for inputting a telephone number and a function selection, and a CPU (Central Processing Unit) 11 for controlling each unit of the mobile phone. Each unit is connected to the CPU 11 by a bus 24.

The communication unit 18 transmits a radio signal modulated by the digital signal input from the voice processing unit 17 to the base station via the antenna 22. Also, via the antenna 22
It demodulates the received radio signal and outputs a digital signal.
In order to improve the radio frequency utilization rate,
QPSK (four-phase modulation) or the like is used. Also, T
When the DD (time division two-way communication) system is used, transmission and reception are performed in a time division manner using the same frequency for transmission and reception.

The audio processing unit 17 has a coder / decoder, and performs A / D conversion for converting an audio signal input via the microphone 20 into a digital signal and D / A conversion for converting the input digital signal into an audio signal. I do. For A / D and D / A conversion, in order to extend the number of multiplexed voices, high-efficiency compression encoding / decoding using a band compression technique, such as ADPCM (adaptive difference PCM) or VSELP (vector sum excitation linear prediction) Encoding) method or the like is used. The vibration sensor 16 detects a shock or vibration applied to the mobile phone and outputs a signal corresponding to the strength of the vibration. The vibration detection unit 15 compares the output of the vibration sensor 16 with a threshold value, determines whether or not the shock or vibration exceeds a predetermined value, generates an interrupt signal when it exceeds the predetermined value, and outputs it to the CPU 11. .

The operation of the above configuration will be described below with reference to FIG. First, a case where a call is made in a normal state will be described. Turn on the power and input the telephone number of the partner terminal to make a call from the operation unit 14,
Operate the call button. The CPU 11 activates a communication program stored in the memory 12 in response to a signal input from the operation unit 14 and sends a call generation from the communication unit 18 to the base station via the antenna 22. The base station sends the received signal to the mobile switching center. The mobile switching center determines the base station of the partner terminal and sends a signal along the route. An incoming signal is sent from the base station to the other terminal, and the other terminal operates the incoming button to establish a line. Subsequently, the voice of the caller is input to the voice processing unit 17 via the microphone 20. The audio processing unit 17 converts the input audio signal into a digital signal band-compressed by a coder. The modulation unit of the communication unit 18 receives the digital signal generated by the audio processing unit 17 and outputs a modulated wireless signal. This radio signal is transmitted to the base station via the antenna 22.

On the other hand, the radio signal received via the antenna 22 is demodulated by the communication unit 18 to generate a digital signal. The audio processing unit 17 decodes the digital signal input from the communication unit 18 by a decoder and outputs an audio signal. This audio signal is output from the speaker 23. When the call ends and the line with the base station is disconnected, the CPU 1
1 recognizes the end of the call, ends the operation of each unit, and causes the display unit 13 to display the call time and the like.

Next, when the portable telephone is no longer in a normal carrying state and is subjected to impact or strong vibration for some reason, for example, when the portable telephone is dropped on the floor, the vibration sensor 16 detects the impact or vibration. And outputs a signal corresponding to the strength. The vibration detection unit 15 compares a signal input from the vibration sensor 16 with a preset threshold value, and outputs an interrupt signal when the input signal exceeds the threshold value. The CPU 11 receives the interrupt signal, determines that the mobile phone is not being carried, and sends a control signal to the ringtone generating unit 19. Ringtone generator 19
Generates an alarm signal having a frequency different from the ring tone based on the control signal sent from the CPU
And raises an alarm. In addition, instead of the alarm sound,
You may make it emit a voice message.

(Second Embodiment) Hereinafter, a second embodiment of the present invention will be described.
An embodiment will be described. The configuration of the mobile phone according to the second embodiment is the same as the configuration of the first embodiment shown in FIG. FIG. 2 is a flowchart showing an operation flow of the mobile phone according to the embodiment. Hereinafter, the operation of the second embodiment will be described with reference to FIG. The normal call operation is the same as described above. Next, a description will be given of an operation when a shock or strong vibration is applied after leaving the state where the portable telephone is carried.

When a shock or vibration is applied to the portable telephone, the vibration sensor 16 detects the shock or vibration and outputs a signal corresponding to the strength. The vibration detector 15 compares the signal input from the vibration sensor 16 with a threshold, and outputs an interrupt signal to the CPU 11 when the input signal exceeds the threshold. Based on the interrupt signal, the CPU 11 performs an interrupt process (step S101), and outputs a function stop command to the communication unit 18 and the voice processing unit 17 (step S1).
02). The control circuits of the communication unit 18 and the voice processing unit 17 are CP
The communication unit 18 and the voice processing unit 17 so that the mobile phone becomes unusable based on the function stop command input from U · 11.
Stop the function of. Further, the CPU 11 controls the communication program stored in the memory 12 not to be activated even if a line call is input from the operation unit 14 in this state.

When the mobile phone returns to a state where it can be used by a registered user, the password is stored in the memory 12 in advance from the operation unit 14 to release the function stop state (step S103; YES). ). CP
U · 11 compares the password input from the operation unit 14 with the password stored in the memory 12, and outputs a control signal for releasing the suspension of the function when they match (step S104). The control circuit of the communication unit 18 and the voice processing unit 17 receives the control signal input from the CPU
The suspension of the functions of the communication unit 18 and the sound processing unit 17 is released.

[0019]

As described above, according to the first aspect of the present invention, when the portable telephone is accidentally dropped, an alarm is issued by the impact, so that the owner can immediately know that the portable telephone has been dropped. Can be. According to the fourth aspect of the present invention, when the mobile phone is dropped and the user does not notice that the mobile phone has been dropped, the communication function of the mobile phone is stopped. The effect that it can be prevented is obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of first and second embodiments of the present invention.

FIG. 2 is a flowchart showing a flow of an operation according to a second embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 11 CPU (central processing unit) 12 memory 13 display unit 14 operation unit 15 vibration detection unit 16 vibration sensor 17 voice processing unit 18 communication unit 19 ringtone generation unit 20 microphone 21, 23 speaker 22 antenna

Continued on the front page (72) Inventor Imayoshi Yoshinobu 10-1 Nakazawa-cho, Hamamatsu-shi, Shizuoka Prefecture F-term in Yamaha Corporation (reference) 5K027 AA11 BB09 FF12 FF25 5K067 AA32 BB04 DD17 EE02 EE10 FF18 FF26 FF27 HH22 HH23 HH24

Claims (5)

[Claims] 1. A communication unit for transmitting and receiving wirelessly to and from a base station, an operation unit for a call operation, a ringtone generation unit for generating a ringtone, a memory for storing call information, and functions of each unit. A vibration sensor for detecting vibration of the mobile phone, comparing the output of the vibration sensor with a preset vibration threshold value, and determining when the vibration intensity exceeds the threshold value. A vibration detection unit that generates a detection signal, and an alarm generation unit that receives a control signal output from the control unit based on a signal input from the vibration detection unit and generates an alarm sound. Mobile phone. 2. The mobile phone according to claim 1, wherein the alarm generation unit outputs an alarm from the ring tone generation unit using a frequency different from a ring tone. 3. The mobile phone according to claim 1, wherein the alarm output by the alarm generating means is a voice message. 4. A communication unit for performing wireless transmission and reception with a base station, an operation unit for a call operation, a ringtone generation unit for generating a ringtone, a memory for storing call information, and functions of each unit. A vibration sensor for detecting vibration of the mobile phone, comparing the output of the vibration sensor with a preset vibration threshold value, and determining when the vibration intensity exceeds the threshold value. A vibration detection unit that generates a detection signal; a function stop unit that stops a function of the communication unit by a control signal output from the control unit based on a signal input from the vibration detection unit; and an input from the operation unit. When the signal for releasing the function stop coincides with the information stored in the memory, based on a control signal output by the control unit, function stop release means for releasing the function stop of the communication unit, Mobile phone, characterized by comprising. 5. The mobile phone according to claim 4, wherein the signal for canceling the function stop input from the operation unit is a password stored in the memory in advance.