JP2001257751A - Mobile phone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile phone that can detect a fault so as to inform a user of the fault. SOLUTION: Each of a communication section 6, a voice processing section 8, and an incoming tone generating section 11 is provide with a detection circuit that detects a fault in data processing and on the occurrence of a fault in any of the sections 6, 8, 11, which outputs a fault signal to a fault detection circuit 15. The fault detection circuit 15 receives the fault signal and generates an interruption signal to a CPU 1, and outputs data denoting fault contents to a bus line 17. The CPU 1 outputs character data denoting fault contents to a display section 5. Furthermore, the fault detection circuit 15 always checks an output signal of a temperature sensor 16 and outputs an interruption signal to the CPU 1 when the output signal exceeds a prescribed value and outputs data denoting an internal temperature fault to the bus line 17. The CPU 1 receives the interruption signal, instructs production of a predetermined alarm tone to the voice processing section 8 and deactivates a power supply after a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a portable telephone having a self-diagnosis function.

[0002]

2. Description of the Related Art In recent years, mobile phones have become widespread and used by many people. However, conventional mobile phones have no particular measures taken when an abnormality (failure) occurs, and therefore, the user carries around for a long time without noticing the occurrence of the abnormality, and cannot receive a call during this time. Alternatively, there has been a problem that an abnormal radio wave causes trouble to other mobile phones without knowing.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and has as its object to detect an abnormality by itself and notify the user of the abnormality, and to a telephone station. Is provided.

[0004]

In order to achieve the above object, according to the present invention, a communication means for transmitting and receiving a signal to and from a base station by radio, and an external device through the communication means. In a mobile phone provided with a communication means for making a call, an abnormality detection means for detecting an abnormality in each part of the circuit, and a display means for receiving the output of the abnormality detection means and displaying the occurrence of the abnormality are provided. . According to a second aspect of the present invention, there is provided the mobile phone according to the first aspect, further comprising an abnormality notifying unit that receives an output of the abnormality detecting unit and notifies an occurrence of an abnormality to a telephone station via the communication unit. It is characterized by having.

[0005] The invention described in claim 3 is based on claim 1.
Alternatively, in the mobile phone according to the second aspect, the abnormality detecting means is a temperature sensor that detects a temperature inside the mobile phone. According to a fourth aspect of the present invention, in the mobile phone according to the first or second aspect, the abnormality detecting means detects a processing abnormality in each part of the circuit.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a mobile phone according to an embodiment of the present invention.
In this figure, reference numeral 1 denotes a CPU that controls each part of the circuit.
(Central processing unit) 2 is a ROM (read only memory) in which a program of the CPU 1 is stored. Reference numeral 3 denotes a data storage RAM (random access memory), which is backed up by a battery. Reference numeral 4 denotes an operation unit provided with numeric keys for inputting telephone numbers, various function keys, and the like. Reference numeral 5 denotes a display unit including a liquid crystal display panel and a display control circuit.

Reference numeral 6 denotes a communication unit having an antenna 7, which transmits transmission data on a carrier wave and transmits it from the antenna 7, and also demodulates an incoming signal received via the antenna 7 to generate a C signal.
Output to PU1 or audio processing unit 8. The audio processing unit 8 converts the audio signal output from the microphone 9 into digital data, further compresses and outputs it as transmission data to the communication unit 6, and converts the audio data output from the communication unit 6 into an analog audio signal. Then, output to the speaker 10. Reference numeral 11 denotes a ring tone generation unit which forms a ring tone signal or a ring tone according to an instruction from the CPU 1 and outputs the signal to the speaker 12. The above configuration is the same as the configuration of the conventional mobile phone.

In the above configuration, when a call is received, the communication unit 6 demodulates the incoming signal received via the antenna 7 and outputs the obtained incoming data to the CPU 1. The CPU 1 receives the incoming data, stores the telephone number of the caller included in the incoming data in the RAM 3, and then outputs a ring tone generation command to the ring tone generating unit 11.
The ring tone generating section 11 receives this command, forms a ring tone melody, and outputs it to the speaker 12. Thereby, an incoming melody is generated from the speaker 21. When the user of the mobile phone listens to the incoming melody and presses the receive button of the operation unit 4, the CPU 1 detects this and outputs a ringing tone stop command to the ringing tone generating unit 11, and the voice processing unit 8 and communication unit. 6 and outputs a line connection instruction. Thereafter, the line is connected to the caller, and the voice signal of the microphone 9 is transmitted to the caller. Further, an audio signal based on the audio data from the transmission source is output from the audio processing unit 8 to the speaker 10, and the speaker 10 emits a sound.

At the time of making a call, when the user inputs the telephone number of the destination using the operation unit 4, the CPU 1 writes the telephone number into the RAM 3 once, and then the communication unit 6
Output to The communication unit 6 transmits the telephone number on a carrier wave. When the transmitted telephone number reaches the destination via the telephone exchange network and the line is connected, the communication unit 6
In addition, a call using the microphone 9 and the speaker 10 is performed with the other party via the voice processing unit 8.

Next, a configuration relating to the above-described abnormality detection of the portable telephone will be described. First, the communication unit 6, the audio processing unit 8,
Each of the ring tone generators 11 and the like is provided with the following abnormality detection function. (1) DSP (Digital Sig) is installed inside each section 6.8.11.
A data processing circuit constituted by a nal processor or the like is provided. In the data processing circuit, when an overflow or an underflow occurs in an adder / subtractor or a multiplier, a signal to that effect is sent to the abnormality detection circuit 15. Is output. (2) To download incoming melody data or the like, the received data is temporarily stored in a FIFO (first-in first-out memory) in the communication unit 6, and the data is sequentially read out and written in the RAM 3.
When further writing is performed when the FO is in the FULL state, or when reading is further performed when the FIFO is in the EMPTY state, a signal indicating abnormality is output to the abnormality detection circuit 15.

(3) When the ring tone generation unit 11 takes in the ring tone melody data in the ROM 2 or RAM 3, it temporarily stores it in an internal FIFO,
Data is extracted from the FO and processed. In this case, if further writing is performed when the FIFO is in the FULL state, or reading is further performed when the FIFO is in the EMPTY state, a signal indicating an abnormality is output to the abnormality detection circuit 15. (4) In the communication unit 6, the parity error of the transmission / reception data, F
A check circuit for checking a CS error is provided. When the check circuit detects an abnormality, an abnormal signal is output to the abnormality detection circuit 15. Note that FCS (Frame Ch
(eck sequence) is error detection data added to data transmitted by a high-level data link control procedure (HDLC), and an FCS error is an error detected based on FCS data.

(5) The communication section 6 is provided with a detection circuit for detecting an abnormality in the oscillation circuit or the modulation circuit that oscillates a high-frequency signal. An abnormal signal is output to the detection circuit 15. (6) A temperature sensor 16 is provided at a predetermined position inside the mobile phone, and its output is supplied to an abnormality detection circuit 15.

The abnormality detection circuit 15 includes the communication unit 6 described above.
Upon receiving the abnormal signal from the voice processing unit 8 and the ring tone generating unit 11, it outputs an interrupt signal to the CPU 1, and outputs data indicating the content of the abnormality to the bus line 17. The CPU 1 receives the interrupt signal, reads data on the bus line 17 to detect the content of the abnormality, and outputs character data indicating the content of the abnormality to the display unit 5. Thus, the occurrence of the abnormality and its contents are displayed on the display unit 5. In addition, for example, when an abnormality occurs in the ring tone generation unit 11, the CPU 1 stops the operation of the ring tone generation unit 11 and outputs the ring tone to the call speaker 10.
To be generated from.

The abnormality detection circuit 15 is provided with a temperature sensor 1
6 is constantly checked, and when the signal exceeds a predetermined first constant value, that is, when the internal temperature of the mobile phone exceeds the first constant value, an interrupt signal is sent to the CPU 1. Output and the internal temperature
Outputs data indicating that a certain value has been exceeded. Further, when the output signal of the temperature sensor 16 exceeds a predetermined second constant value, an interrupt signal is output to the CPU 1 and the bus line 17 is notified that the internal temperature has exceeded the second constant value. Output the data shown.

The CPU 1 receives these interrupt signals, reads the data on the bus line 17, and detects the contents of the abnormality.
When the internal temperature exceeds the first fixed value, only the telephone function is enabled, and functions other than the telephone function such as music reproduction and graphic display are disabled. When the internal temperature exceeds the second constant value, all the functions are disabled and the sound processing unit 8 is instructed to generate a predetermined alarm sound. Is turned off.
As a result, the power is turned off after the alarm sounds for a short time. In this case, as the alarm sound, for example, an incoming melody may be sounded for a short time, or an alarm signal may be prepared in advance. If a call is in progress when the internal temperature exceeds the second constant value, an alarm sound is given to the speaker 1.
A calling time limit may be applied in which the sound starts from 0 and the power is turned off after a certain period of time.

Further, when the content of the abnormality is an abnormality of the oscillation circuit or the modulation circuit in the communication section 6, the CPU 1 displays the fact on the display section 5 and a telephone station stored in the ROM 2 in advance. And notifies the telephone office that an error has occurred. Thus, when there is a possibility of affecting another mobile phone, it is possible to stop the use of the mobile phone in which the abnormality has occurred at the central office. Note that an abnormality in the oscillation circuit or the modulation circuit outputs abnormal radio waves, which may cause a nearby mobile phone to be unable to transmit or receive due to the influence of the radio waves or to occupy and release the communication channel.

The program of the CPU 1 is also provided with the following abnormality detection function. That is, CPU
1 requires execution of various programs associated with tone reproduction, color image display, and the like.
When the processing capacity of the PU 1 is exceeded, the CPU 1 detects that fact and outputs display data to the display unit 5 to display the occurrence of an abnormality. In the normal case, the processing time of the program only increases, but in the case of a program that requires real-time performance such as music reproduction, the above-described abnormal processing is performed. When an abnormality is detected in the graphic display program processing, the CPU 1 displays only character information on the display unit 5.

When ringing melody data is downloaded from an external distribution center, the CPU 1 checks the ringing melody data output from the communication section 6. If the incoming melody data is sent by mistake, the CPU 1 displays a character display to that effect on the display unit 5. Also, when an erroneous control signal is sent from the control channel, the CPU 1 similarly displays a character to that effect.

[0019]

As described above, according to the present invention, there are provided abnormality detecting means for detecting an abnormality in each section of the circuit, and display means for receiving the output of the abnormality detecting means and displaying the occurrence of the abnormality. The effect of being able to detect the abnormality by itself and notify the user is obtained. According to the second aspect of the present invention, since the abnormality notifying means for notifying the telephone station of the occurrence of the abnormality through the communication means is provided, the abnormality can be automatically notified to the telephone station. When there is a possibility of affecting the mobile phone, the use of the mobile phone in which the abnormality has occurred can be stopped at the central office.

[Brief description of the drawings]

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

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... CPU, 2 ... ROM, 3 ... RAM, 4 ... operation part, 5
... display unit, 6 ... communication unit, 8 ... voice processing unit, 11 ... ring tone generation unit, 15 ... abnormality detection circuit, 16 temperature sensor.

Claims (4)

[Claims] 1. A mobile phone comprising: communication means for transmitting and receiving a signal to and from a base station by radio; and communication means for making a call with the outside via said communication means. And a display unit for receiving the output of the abnormality detection unit and displaying the occurrence of the abnormality. 2. The mobile phone according to claim 1, further comprising an abnormality notifying unit that receives an output of the abnormality detecting unit and notifies the telephone station of the occurrence of the abnormality through the communication unit. 3. The mobile phone according to claim 1, wherein the abnormality detecting unit is a temperature sensor that detects a temperature inside the mobile phone. 4. The circuit according to claim 1, wherein said abnormality detecting means detects a processing abnormality of each part of the circuit.
A mobile phone according to claim 1.