JP5009063B2 - Mobile communication terminal and method for improving sensitivity suppression of mobile communication terminal - Google Patents

Description

  The present invention relates to a mobile communication terminal such as a mobile phone terminal and a method for improving sensitivity suppression used in the mobile communication terminal.

  Mobile phone terminals are equipped with display devices (display modules) such as LCDs (Liquid Crystal Displays) and organic EL panels (Organic Electroluminescence Panels) that have a relatively large display screen, and also realize camera functions. In order to improve user convenience, such as mounting a camera device (camera module) for this purpose, the functions have been expanded.

  However, the operation of devices that realize functions other than the original communication function, such as display devices and camera devices, causes secondary electromagnetic noise, which is a communication signal used in mobile phone terminals. There is a case of interference. In this case, so-called sensitivity suppression that prevents good communication from being performed even though a communication signal with a signal level higher than the sensitivity point (minimum signal level at which normal communication can be performed) of the mobile phone terminal is transmitted and received. May occur.

  In order to deal with such a problem, for example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 2004-179861), in a mobile phone terminal equipped with a camera device, the frequency of the received signal is the clock frequency used by the camera device. An invention is disclosed in which the clock frequency of the camera device is changed when the received electric field strength is an integer multiple and the received electric field strength is equal to or less than a threshold value.

  Patent Document 2 (Japanese Patent Application Laid-Open No. 2005-328425) discloses a camera device in which a harmonic component of a clock signal used by the camera device does not correspond to a reception frequency in a mobile phone terminal equipped with the camera device. An invention for changing the frequency of a clock signal to be used is disclosed.

Patent Document 3 (Japanese Patent Laid-Open No. 2005-159939) discloses an invention in which the frequency of a clock signal for driving an LCD mounted on a mobile phone terminal is lowered during a call of the mobile phone terminal. Has been. Patent Document 4 (Japanese Patent Application Laid-Open No. 2000-332861) discloses that when the mobile phone terminal is in a call state, the backlight of the LCD display unit is turned off, and noise generated by the backlight affects the communication signal. An invention that prevents this from happening is disclosed.
JP 2004-179861 A JP 2005-328425 A JP 2005-159939 A JP 2000-328661 A

  By the way, the invention described in Patent Document 1 to Patent Document 4 described above actually affects when there is a probability that the communication signal is affected by the operation of the camera device or the LCD device. It controls the frequency of the drive clock signal of the camera device or LCD device regardless of whether it is present or not. For this reason, even when the communication signal is not actually affected, it is considered that the frequency of the drive clock signal of the camera device or the LCD device may be controlled.

  Also, in recent years, various kinds of functions for providing new functions to mobile phone terminals such as a GPS (Global Positioning System) device and an interface device for enabling connection to other electronic devices are available. New devices are being installed.

  As described above, when a plurality of devices are mounted, it is not sufficient to control only the camera device or the LCD device. In other words, when multiple devices for implementing functions other than the communication function are installed in a mobile phone terminal, good communication quality can be achieved if the devices that actually affect communication cannot be controlled. It may happen that it disappears.

  In view of the above, the present invention provides a device that affects communication processing only when necessary in a portable communication terminal equipped with one or more devices for realizing functions other than communication functions. The purpose is to allow proper control.

In order to solve the above problem, the mobile communication terminal of the invention according to claim 1 is:
Detecting means for detecting a communication error rate during communication;
Determining means for determining whether or not the communication error rate detected by the detecting means is greater than a predetermined threshold;
Stop control means for controlling to stop the operation of a predetermined device portion when the error rate is determined by the determination means to be greater than a predetermined threshold ;
Detection control means for controlling the detection means to detect a new communication error rate after the operation of the predetermined device portion is stopped by the control of the stop control means;
Improvement discriminating means for discriminating whether or not the new communication error rate detected by the control of the detection control means has improved below the predetermined threshold;
When the improvement determining means determines that the new communication error rate has not improved below the predetermined threshold, the operation of the device that has stopped operating is restarted and the stop control means is controlled. , by controlling to stop the operation of other devices, Ru and a change control means for controlling to change the device for stopping the operation.

  According to the portable communication terminal of the first aspect of the invention, the communication error rate is detected by the detecting means during communication. The detected communication error rate is monitored by the determining means, and it is determined whether or not the communication error rate is larger than a predetermined threshold, that is, whether or not the communication error rate is worse than the reference value.

  If it is determined that the communication error rate is greater than the predetermined threshold, the stop control unit controls the operation of the predetermined device portion to stop, and noise generated by the operation of the device portion is generated. The communication signal is not affected.

  As a result, the problem of sensitivity suppression can be solved by stopping the operation of the device that affects communication processing only when the communication error rate actually deteriorates and communication is hindered. Be made possible.

In addition , after the operation of the predetermined device is stopped, the detection unit is controlled by the detection control unit, and a new communication error rate is detected. Thereafter, it is determined by the improvement determining means whether or not the newly detected communication error rate has improved below a predetermined threshold.

  If it is determined that the new communication error rate has not improved below the predetermined threshold, the change control means restarts the operation of the device portion that was previously stopped, and the stop control means Is controlled to stop the operation of other devices.

  As a result, a device that actually affects communication processing is identified, and by stopping the operation of the identified device, noise that affects communication processing is not generated, and sensitivity suppression is ensured. Will be able to prevent.

A mobile communication terminal according to a second aspect of the present invention is the mobile communication terminal according to the first aspect ,
Storage means for storing and holding the number of operation stop maintenance for each device that is subject to operation stop control;
An update means for updating the number of times of stoppage of the storage means when the improvement determination means determines that the new communication error rate has improved to be equal to or less than the predetermined threshold;
Based on the stop maintaining the number stored and held for each device in the storage means, Ru and a priority setting means for locating more devices stop order of the stop maintaining the number at a higher level.

According to the portable communication terminal of the second aspect of the present invention, when the new communication error rate is improved to a predetermined threshold value or less by the improvement determination means, the operation of the device that is stopped is stopped. The stop of the operation is maintained, and the number of times of maintaining the stop for the device stored in the storage unit is updated.

  This makes it possible to grasp which device is operating and often has an adverse effect on communication processing. Then, it is possible to perform control so that a device having a high possibility of adversely affecting communication is given priority as an operation stop target. Therefore, it is possible to avoid the occurrence of sensitivity suppression reliably and quickly.

  According to the present invention, in consideration of the possibility that the clock signal used in various devices mounted to enhance the function may cause sensitivity suppression by affecting the communication signal. It is possible to appropriately control the device causing the suppression so as not to deteriorate the communication quality.

  Hereinafter, an embodiment of an apparatus and a method according to the present invention will be described with reference to the drawings. In the embodiment described below, a case where the present invention is applied to a mobile phone terminal will be described as an example.

[Configuration of cellular phone terminal of embodiment]
First, the configuration of the mobile phone terminal according to this embodiment will be described. FIG. 1 is a block diagram for explaining the configuration of a mobile phone terminal according to this embodiment, to which an embodiment of the apparatus and method according to the present invention is applied. As shown in FIG. 1, the mobile phone terminal of this embodiment includes a control line (control bus) 101 used for transmission of control signals, and a data line (data bus) 102 used for transmission of various data. Is provided.

  As shown in FIG. 1, the control line 101 includes a CPU (Central Processing Unit) 130, a communication circuit 104, a ROM (Read Only Memory) 109, a RAM (Random Access Memory) 110, and an EEPROM (Electrically Erasable and Programmable ROM) 111. , Display control unit 112, press detection unit 115, sound generation control unit 116, vibration device 117, LAN module 118, camera module 120, USB (Universal Serial Bus) interface (hereinafter abbreviated as USB I / F) 121, GPS. A module 122 and a clock signal generator 140 are connected.

  As shown in FIG. 1, the data line 102 includes a communication circuit 104, a ROM 109, a RAM 110, an EEPROM 111, a display control unit 112, a press detection unit 115, a D / A converter 105, an A / D converter 108, A sound control unit 116, a LAN module 118, a camera module 120, a USB I / F 121, and a GPS module 122 are connected.

  Furthermore, the communication circuit 104 is connected to the transmission / reception antenna 103, the display control unit 112 is connected to the LCD 113 as a display unit, the press detection unit 115 is connected to the key operation unit 114, and the LAN module 118 is connected. The LAN transmitting / receiving antenna 119 is connected, and the GPS receiving antenna 123 is connected to the GPS module 122.

  The D / A converter 105 and the sound control unit 116 are connected to a speaker 106 that is also used as a receiver, and the A / D converter 108 is a microphone that is used as a transmitter (in FIG. 1). , Described as a microphone.) 107 is connected. Here, although it has been described that the speaker 106 is connected to the sound control unit 116 and the D / A converter 105, the present invention is not limited to this. Of course, it is also possible to provide individual speakers.

  Although the cellular phone terminal of this embodiment is not shown, for example, when a rechargeable battery pack is used as a power source and the cellular phone terminal is turned on, the driving power is supplied to each circuit portion. A power supply circuit is provided.

  In the mobile phone terminal of this embodiment, a CPU 130, ROM 109, RAM 110, and EEPROM 111 constitute a microcomputer, and this microcomputer controls each part of the mobile phone terminal of this embodiment. It has a function as.

[Basic operation of mobile communication terminal]
Next, the operation of the mobile phone terminal of this embodiment having the configuration shown in FIG. 1 will be described. First, a process at the time of incoming call to the own apparatus, that is, a process in the case of responding to a phone call received by the own apparatus will be described. The incoming call notification signal transmitted is received and selected by the transmission / reception antenna 103 and the communication circuit 104. The signal selected in the communication circuit 104 is demodulated in the communication circuit 104, and the demodulated signal is notified to the CPU 130 via the control line 101.

  When the received and tuned signal is an incoming notification signal addressed to the own device, the CPU 130 reads out the ring tone data that forms the ring tone such as the ring melody prepared in advance in the ROM 109, for example. The sound is supplied to the sound control unit 116. The sound control unit 116 forms an incoming ring tone of an analog signal from the incoming ring tone data supplied thereto, and supplies this to the speaker 106. As a result, a ring tone is emitted from the speaker 106, and the user of the mobile phone terminal is notified that there is an incoming call.

  Similarly, when CPU 130 detects an incoming call notification signal addressed to itself, it vibrates by controlling vibration device 117 so as to notify the user of the mobile phone terminal that there is an incoming call due to this vibration. You can also do that. Note that it is possible to use both the incoming call notification by the ringtone and the incoming call notification by vibration, or it is possible to use only one of them.

  When the user of the mobile phone terminal notices that there is an incoming call to his / her mobile phone terminal due to a ring tone or vibration, the user can use a call start key ( Off-hook key). When the call start key is operated, this is detected by the press detection unit 115 and notified to the CPU 130 through the control line 101.

  When the CPU 130 receives a notification that the call start key is pressed from the press detection unit 115, the CPU 130 controls the communication circuit 104 to perform a predetermined communication line connection process such as sending a response signal. As a result, a communication line is connected between the communication terminal that has called the own device and the own device, and a call can be made.

  That is, the signal from the other party who made the call is received and tuned through the transmission / reception antenna 103 and the communication circuit 104, and is demodulated in the communication circuit 104 to be a baseband signal. The signal is supplied to the D / A converter 105 through the line 102.

  The D / A converter 105 converts the baseband signal supplied thereto into an analog signal and supplies the analog signal to the speaker 106. Thereby, sound corresponding to the signal transmitted from the other party is emitted from the speaker 106.

  The voice from the user of the cellular phone terminal is collected by the microphone 107 and supplied to the A / D converter 108 as an analog electric signal. The A / D converter 108 converts the analog audio signal supplied thereto into a digital signal and supplies it to the communication circuit 104 through the data line 102.

  The communication circuit 104 forms a transmission signal including the digital signal supplied thereto and transmits it through the transmission / reception antenna 103. As a result, the user's voice is transmitted to the communication partner. In this way, it is possible to make a call by answering a call received from the own device and connecting a communication line to the other party who made the call.

  When making a call from the mobile phone terminal of this embodiment, for example, the user presses the numeric key provided in the key operation unit 114 of the mobile phone terminal and inputs the telephone number of the intended destination. Then, the pressed numeric key is detected by the pressing detection unit 115 and notified to the CPU 130 through the control line 101. The CPU 130 temporarily stores this in, for example, the RAM 110, and when detecting that the call start key has been pressed, the CPU 130 forms a transmission signal including the received telephone number and transmits it through the communication circuit 104 and the transmission / reception antenna 103.

  This outgoing signal is transmitted to the telephone terminal of the intended destination through the equipment of the telephone company such as a base station or an exchange. Then, when the other party performs a response operation in response to the transmission signal, a response signal is transmitted from the other party. When this response signal is received, the communication circuit 104 controls the purpose of the circuit under the control of the CPU 130. Confirm that the communication line is connected to the other party, and transmit / receive antenna 103, communication circuit 104, D / A converter 105, speaker 106, microphone 107, as in the case of responding to the incoming call described above. , A call can be made through the A / D converter 108.

  When making a call, select the desired phone number from the so-called phone book data to be registered in advance in the mobile phone terminal, and press the call start key, It is also possible to make outgoing calls.

  In addition, when a call is received, the phone number of the other party who made the call is displayed, or the current time is displayed, or when the above phone book data is registered or selected, A display control unit 112 and an LCD 113 are provided for displaying a telephone number, a name and name corresponding to the telephone number, or displaying various guidance messages and warning messages. That is, the display control unit 112 displays various types of information on the LCD 113 under the control of the CPU 130. The LCD 113 has a relatively large display screen, so that various display information can be provided to the user with high visibility.

  In this way, the mobile phone terminal of this embodiment can respond to an incoming call or make a call to a target destination.

  Furthermore, the mobile phone terminal of this embodiment accesses the Internet via a function provided by the telephone company, accesses the target home page, searches for information, or downloads necessary information. Or, e-mail can be sent and received.

  When connecting to the Internet through the mobile phone terminal of this embodiment, the user operates the predetermined Internet connection key provided in the key operation unit 114, and this is detected by the press detection unit 115, A request for connection to the Internet is notified from the press detection unit 115 to the CPU 130 through the control line 101.

  In response to this, the CPU 130 controls the communication circuit 104 through the control line 101, forms a connection request to the Internet in the communication circuit 104, and transmits this through the transmission / reception antenna 103. The system on the telephone company side that has received the request for connection to the Internet connects the requesting mobile phone terminal to the Internet in response to the request.

  As a result, the cellular phone terminal of this embodiment is connected to the Internet, accesses a target server, sends and receives packet data, requests provision of necessary information, and provides information corresponding to this. You will be able to receive.

  In addition, the cellular phone terminal according to this embodiment inputs characters through the key operation unit 114 and the press detection unit 115, and transmits the characters while confirming the input characters displayed on the display unit 113 through the display control unit 112. The e-mail to be created can be created in the transmission folder of the EEPROM 111. In this case, the input character information is supplied to the EEPROM 111 and the display control unit 112 through the data line 102 under the control of the CPU 130.

  The transmission e-mail formed in the transmission folder in the EEPROM 111 in this manner is detected by the press detection unit 115 by performing an operation of transmitting the e-mail to the key operation unit 114, and is controlled. The CPU 130 is notified through the line 101. The CPU 130 controls the communication circuit 104 so that the electronic mail created in the transmission folder of the EEPROM can be transmitted to the designated mail server of the destination.

  Further, when the e-mail to the own machine is stored in the own mail server, when the operation for instructing the reception of the e-mail addressed to the own machine is performed on the key operation unit 114, this is detected as the press detection unit 115. And is notified to the CPU 130 through the control line 101. In this case, the CPU 130 controls the communication circuit 104, accesses its own mail server, downloads the electronic mail addressed to itself, and stores it in the reception folder of the EEPROM 111.

  The e-mail addressed to the own device stored in the reception folder in the EEPROM 111 in this way is read out under the control of the CPU 130, supplied to the display control unit 112 through the data line 102, and sent to the LCD 113 through the display control unit 112. It is supplied so that it can be displayed on the display screen. As a result, an e-mail addressed to the own device from the other party can be acquired, displayed on the LCD 113, and read.

  As described above, the mobile phone terminal according to this embodiment can not only perform telephone communication but also have a function of connecting to the Internet, and can also acquire information and send / receive e-mails through the Internet. It can be done. That is, the cellular phone terminal of this embodiment can perform data communication over the Internet in addition to telephone communication as a wide area communication function.

  Furthermore, as described above, the cellular phone terminal of this embodiment also includes the LAN module 118, and is connected to a predetermined LAN and communicates between devices connected to the predetermined LAN. It also has a function to perform. In addition, a camera module is also provided, and an image of a subject is taken, captured as digital image data, stored in the EEPROM 111, read out as necessary, supplied to the LCD 113 through the display control unit 112, and displayed on the LCD 113. It can be used by displaying it on the screen.

  The mobile phone terminal of this embodiment also includes a USB I / F 121 and can connect various external devices including the USB I / F. For example, a USB memory is connected to back up digital image data stored in the EEPROM 111 to the USB memory, or a USB I / F 121 is connected to a personal computer to back up the data to a personal computer hard disk. Various data can be provided from a personal computer.

  Further, the mobile phone terminal of this embodiment includes a GPS module 112, and can accurately grasp the current position of the own device by receiving and analyzing signals from a plurality of artificial satellites. . For example, this GPS module uses map information acquired through the Internet or map information stored in a USB memory connected to the USB I / F 121, and displays a current position on the map information to provide route guidance. It can be used when performing.

  In FIG. 1, a clock signal generator 140 generates a clock signal to be supplied to each part of the mobile phone terminal of this embodiment and supplies it to a target part. The clock signal generator 140 can form and supply a clock signal having a different frequency for each supply destination of the clock signal. Further, the clock signal generator 140 can change the frequency of the clock signal generated for each supply destination of the clock signal in accordance with the control of the CPU 130.

  Although not shown, the mobile phone terminal of this embodiment has a so-called calendar function, and also includes a clock circuit that can provide the current date, current day, and current time.

  In the mobile phone terminal of this embodiment, when the CPU 130 controls the communication circuit 104 to connect to a wide area network and perform communication, the display control unit 112, the display unit 113, the LAN module 118, the camera It is considered that noise may be generated by the operation of the module 120, the USB I / F 121, the GPS module 122, and the like, which may adversely affect communication performed through the communication circuit 104.

  Therefore, in the mobile phone terminal of this embodiment, during the communication process through the communication circuit 104, a communication error rate is detected at every predetermined timing, and the detected communication error rate is larger than a predetermined threshold value. In such a case, the communication quality is not deteriorated by stopping the operation of a device that may affect the communication processing.

  Hereinafter, a process for improving sensitivity suppression performed in the mobile phone terminal of this embodiment will be described in detail.

  As can be seen from the above description, the communication circuit 104 has a reception processing function for demodulating a received signal and converting it to a baseband signal, and a transmission processing function for forming transmission data, modulating it, and transmitting it. Is realized. The communication circuit 104 has a function of detecting a communication error rate (communication error rate) for the received signal.

  The communication error rate includes various frame error rates detected during a call, packet error rates detected during data communication, message error rates detected during standby, CRC (Cyclic Redundancy Check) error rates, and the like. However, the communication circuit 104 of the mobile phone terminal according to this embodiment can detect an appropriate error rate in the communication processing being executed.

  For this reason, in the following description, in order to simplify the description, the communication circuit 104 detects that it is possible to detect an appropriate error rate in the communication processing executed by the communication circuit 104. The error rate for the received signal is simply described as a communication error rate.

[Sensitivity suppression improvement processing (1)]
First, the sensitivity suppression improvement process (1) will be described. This sensitivity suppression improvement process (1) stops the operations of devices (modules) that may affect the communication process in a predetermined order when the communication error rate is larger than a predetermined threshold. To go. Then, when the communication error rate after the device is stopped is improved to a predetermined threshold value or less, it is determined that the stopped device is affecting communication processing, and the stop state of the stopped device is determined. By maintaining the above, sensitivity suppression is improved.

  FIG. 2 is a diagram for explaining the sensitivity suppression improvement process (1) executed by the portable information terminal of this embodiment. The process illustrated in FIG. 2 is a process that is repeatedly executed by the CPU 130 at predetermined timings when the communication process is performed through the communication circuit 104.

  First, the CPU 130 controls the communication circuit 104 to detect the current communication error rate, and the detected communication error rate is, for example, a predetermined threshold value for the communication error rate preset in the ROM 109 or the like. It is determined whether it is larger (step S101).

  If it is determined in step S101 that the communication error rate is not greater than the predetermined threshold, the communication quality has not deteriorated, and the process shown in FIG. 2 is terminated. When it is determined in step S101 that the communication error rate is greater than a predetermined threshold value, it is determined that the communication quality has deteriorated. First, the display device comprising the display control unit 112 and the display unit 113 is determined. The operation is stopped (step S102).

  Then, the CPU 130 controls the communication circuit 104, acquires the latest communication error rate, and determines whether or not the new communication error rate has improved below the predetermined threshold (step S103). In the determination process of step S103, if it is determined that the new communication error rate has improved below the predetermined threshold, the display device including the display control unit 112 and the display unit 113 has affected communication. Determination is made to maintain the display device in a stopped state (step S104), and the processing shown in FIG.

  If it is determined in step S103 that the new communication error rate has not improved below the predetermined threshold, the display device including the display control unit 112 and the display unit 113 affects the communication. Therefore, the CPU 130 recovers the display device that has been turned off and stopped so that the display device is turned on and operated (step S105). Thereafter, the CPU 130 turns off the LAN module 118 and operates the LAN module 118. Is stopped (step S106).

  Then, the CPU 130 controls the communication circuit 104, acquires the latest communication error rate, and determines whether or not the new communication error rate has improved below the predetermined threshold (step S107). If it is determined in step S107 that the new communication error rate has improved below a predetermined threshold, it is determined that the LAN module 118 has affected communication, and the LAN module 118 is stopped. The process shown in FIG. 2 is terminated while maintaining the state (step S108).

  If it is determined in the determination process in step S107 that the new communication error rate has not improved below the predetermined threshold value, it can be seen that the LAN module 118 does not affect communication. Then, the LAN module 118 that has been turned off and stopped is restored to be turned on and operated (step S109).

  Thereafter, the CPU 130 of the mobile phone terminal of this embodiment changes the devices to be stopped in order, and checks whether the communication error rate has improved to a predetermined threshold value or less, thereby affecting the communication processing. The communication quality is prevented from deteriorating by identifying the device (module) that exerts the performance and maintaining the operation stop state of the identified device.

  In this example, when the communication error rate is larger than a predetermined threshold during the communication process, the CPU 130 determines (1) display device → (2) LAN module → (3) camera module → (4 ) USB I / F → (5) The device to be stopped is changed in the order of GPS modules.

  As a result, for all devices that may affect communication processing by operating, it is possible to identify which device is affecting communication processing and to influence that communication processing. By stopping the communication, the communication quality can always be kept good.

  Note that the device operation can be stopped by not supplying power to the device to be controlled or by not supplying a clock signal. Then, when the communication process is completed after maintaining the device stopped state, the device that maintains the stopped state is returned to the operating state.

  Of course, not only when the communication process is completed, but also when it is automatically restored, for example, when the stopped state is maintained and the device in which the stopped state is maintained is used, the operation state is restored. You may make it let it. In addition, when there is a device in a stopped state, this can be notified to the user, and the device can be returned to the operating state according to the user's instruction. That is, a device whose operation has been stopped because of affecting communication processing is restored to an operating state at an appropriate timing so that subsequent operations are not hindered.

[Modification of Sensitivity Suppression Improvement Process (1)]
In the case of the sensitivity suppression improvement process (1) described above, as described with reference to FIG. 2, the stop order of the devices to be stopped is determined in advance. However, there are cases where a device whose stop order is positioned at the lower level frequently affects communication processing. In such a case, a device that has no influence on the communication processing is preferentially subjected to stop control, and therefore it takes some time to cancel the sensitivity suppression state.

  Therefore, because the sensitivity suppression improvement process has affected the communication process, the number of times the stopped state is maintained is managed for each device, and the priority of the device with the highest number of times that the stopped state is maintained (the number of times the stop is maintained) Think of it as a top position. As a result, it is possible to prioritize a device that frequently affects communication processing by operating as a target of stoppage, and it is possible to more quickly resolve the state of sensitivity suppression.

  3 and 4 are diagrams for explaining a device table for managing the number of times of stop maintenance for each device. In this embodiment, the device tables shown in FIGS. 3 and 4 are formed in the EEPROM 111 in the mobile phone terminal of this embodiment.

  As shown in FIGS. 3 and 4, the device table includes information for specifying a device (module), the number of times of stop maintenance, and priority. Here, in order to simplify the description, the name of the device is used as information for specifying the device. However, generally, identification information unique to each device such as a device ID is used.

  In the default state (initial state) of the device table, as shown in FIG. 3, the number of times that each device is stopped is “0”, and the priority order is a predetermined order. As in the case of the processing described with reference to FIG. 2, the default priority order is as follows: (1) Display device → (2) LAN module → (3) Camera module → (4) USB I / F → (5) GPS module It is said that the order.

  When the communication error rate is larger than a predetermined threshold during the communication process, in the first sensitivity suppression improvement process, the devices are stopped in order according to the priority order of the device table shown in FIG. Is maintained below the predetermined threshold value, the device is kept stopped, and the value “1” is added to the number of times that the device has been stopped. Update.

  For example, as illustrated in FIG. 4, it is assumed that the number of times of maintaining each device is updated by repeatedly performing the sensitivity suppression improvement process. In the case of the example shown in FIG. 4, the number of stop maintenance times of the display device including the LCD 113 and the display control unit 112 is three times, the stop maintenance number of the GPS module 122 is two times, and the stop maintenance number of the USB I / F 121 is one time. It is.

  In this case, as shown in FIG. 4, the priority of the display device including the LCD 113 and the display control unit 112 is first, the priority of the GPS module 122 is second, the priority of the USB I / F 121 is third, The LAN module 118 and the camera module 120 with the number of times of stop maintenance being “0” are ranked after the USB I / F 121, and the order is the original order, that is, the order of the LAN module 118 and the camera module 120. Is done.

  As a result, when the communication error rate is larger than a predetermined threshold during communication processing, the device table shown in FIG. 4 is referred to, and (1) display device → (2) GPS module → (3) USB module The sensitivity suppression improvement processing is performed in the order of (4) LAN module → (5) camera module.

[Specific Processing of Modified Example of Sensitivity Suppression Improvement Processing (1)]
Next, a specific process of a modified example of the sensitivity suppression improvement process (1) performed using the device tables shown in FIGS. 3 and 4 will be described. FIG. 5 is a flowchart for explaining specific processing of a modified example of sensitivity suppression improvement processing (1). The process shown in FIG. 5 is a process that is repeatedly executed at predetermined timings by the CPU 130 when the communication process is performed through the communication circuit 104, as in the case of the process described with reference to FIG. It is.

  Also in the processing shown in FIG. 5, first, the CPU 130 controls the communication circuit 104 to detect the current communication error rate, and the detected communication error rate is preset in the ROM 109, for example. It is determined whether or not the communication error rate is greater than a predetermined threshold (step S201).

  If it is determined in step S201 that the communication error rate is not greater than the predetermined threshold, the communication quality has not deteriorated, and the process shown in FIG. 5 is terminated. If it is determined in step S201 that the communication error rate is greater than a predetermined threshold, it is determined that the communication quality has deteriorated, and a value “1” is substituted for the variable P indicating the priority ( Step S202).

  Then, the P-ranked device is identified from the device table information, and the identified device is turned off to stop the operation of the device (step S203). Then, the CPU 130 controls the communication circuit 104, acquires the latest communication error rate, and determines whether or not the new communication error rate has improved to be equal to or less than the predetermined threshold (step S204).

  In the determination process of step S204, when determining that the new communication error rate has not improved below the predetermined threshold, the CPU 130 turns on the device whose priority is P-th order whose operation was stopped in step S203. Then, the operation is resumed (step S205). Thereafter, it is determined whether or not the priority indicated by the variable P is the last priority (step S206).

  Whether or not the priority order is the last can be specified according to the number of registered devices in the device table. That is, in the case of the example shown in FIGS. 3 and 4, the registered devices are the display device, the LAN module, the camera module, the USB I / F, and the GPS module, so the final priority is 5th. become.

  When it is determined in step S206 that the priority indicated by the variable P is not the last priority, 1 is added to the variable P (step S207), and then the processing from step S203 is repeated. That is, the stop target is moved to the next priority device. When determining in step S206 that the priority indicated by the variable P is the last priority, the CPU 130 ends the processing shown in FIG.

  If it is determined in the determination process in step S204 that the new communication error rate has improved below a predetermined threshold value, the priority of the device whose priority is P is set to stop the operation in step S203. It continues to be turned off (step S208). Then, the CPU 130 accesses the device table formed in the EEPROM 111, and adds the value “1” to the number of times of maintaining the stop of the P-th priority device that maintains the stopped state this time (step S209). .

  After that, the CPU 130 updates the priority order of the device table in the EEPROM 111 based on the current number of stop maintenance (step S210). Specifically, the CPU 130 refers to the stop maintenance frequency of each device and assigns priorities in descending order of the stop maintenance frequency. If there is a device with the same number of times of stop maintenance, a new priority is assigned according to the order indicated by the immediately preceding priority. Thereafter, the CPU 130 ends the process shown in FIG.

  In this way, by stopping the operation of the device, the communication error rate is improved to a predetermined threshold value or less, and the device shown in FIGS. In addition to updating the number of stop maintenance times in the table, the stop order (priority order) in the sensitivity suppression improvement process can be appropriately updated in accordance with the updated number of stop maintenances.

  Then, as described with reference to FIG. 4, the priority order of the devices with the highest number of stop maintenance is made higher, which has an influence on the communication processing, and the devices with the higher number of stop maintenances are ordered in order. It can be used as a device to be stopped in the sensitivity suppression improvement processing.

  As a result, it is possible to identify a device that affects communication processing as quickly as possible and stop the operation of the device so that the sensitivity suppression state can be avoided in the shortest possible time. It is possible to prevent deterioration.

  Also, in the case of the modified example of the sensitivity suppression improvement processing (1), as in the case of the example described with reference to FIG. 2, the stop of the device may be configured not to supply power to the device to be controlled, Alternatively, it can be performed by not supplying a clock signal.

  As for the device whose operation has been stopped, as in the case of the example described with reference to FIG. 2, the device in which the communication processing is completed or the stopped state is maintained while the stopped state is maintained. May be returned to the operating state. In addition, when there is a device in a stopped state, this can be notified to the user, and the device can be returned to the operating state according to the user's instruction. That is, a device whose operation has been stopped because of affecting communication processing is restored to an operating state at an appropriate timing so that subsequent operations are not hindered.

[Sensitivity suppression improvement processing (2)]
In the case of the sensitivity suppression improvement processing (1) described with reference to FIGS. 2 to 5, the state of sensitivity suppression is avoided by stopping the operation of a device that may affect the communication processing. I did it. However, it is not limited to this. Sensitivity suppression occurs when noise leaks from an operating device to a communication signal.

  For this reason, noise leaking into the communication signal may be reduced by changing the frequency (clock frequency) of the clock signal for driving a device that may affect communication processing. . That is, the operation of a device that may affect the communication process is not stopped, but the frequency of the clock signal that drives the device that may affect the communication process is changed.

  As described above, the sensitivity suppression improvement process (2) described below affects the communication process in order to improve the communication error rate when the communication error rate exceeds a predetermined threshold during the communication process. The communication error rate is improved to a predetermined threshold value or less by changing the clock frequency of the device that may be present.

  FIG. 6 is a flowchart for explaining the sensitivity suppression improvement process (2) for changing the clock frequency of the device. The processing shown in FIG. 6 is also repeated at predetermined timings by the CPU 130 when the communication processing is performed through the communication circuit 104 as in the case of the sensitivity suppression improvement processing (1) described with reference to FIG. It is a process to be executed.

  First, the CPU 130 controls the communication circuit 104 to detect the current communication error rate, and the detected communication error rate is, for example, a predetermined threshold value for the communication error rate preset in the ROM 109 or the like. It is determined whether it is larger (step S301).

  If it is determined in step S301 that the communication error rate is not greater than the predetermined threshold, the communication quality has not deteriorated, and the process shown in FIG. 6 is terminated. If it is determined in step S301 that the communication error rate is greater than the predetermined threshold, it is determined that the communication quality has deteriorated, and the CPU 130 first includes the display control unit 112 and the display unit 113. The clock frequency of the display device is changed (step S302).

  In the mobile phone terminal according to this embodiment, the CPU 130 changes the clock frequency by controlling the clock signal generator 140. As described above, the clock signal generation unit 140 can change the frequency of the clock signal generated for each supply destination of the clock signal in accordance with the control of the CPU 130. The signal generator 140 is controlled to change the frequency of the clock signal supplied to the display controller 112 and the LCD 113.

  The clock frequency can be changed by, for example, increasing or decreasing the target clock frequency by a predetermined frequency for each device, or by determining the clock frequency to be changed in advance. Alternatively, the frequency may be changed to the determined frequency. Information regarding such a change in clock frequency is stored and held in the ROM 109 or the EEPROM 111, for example.

  Then, the CPU 130 controls the communication circuit 104, acquires the latest communication error rate, and determines whether or not the new communication error rate has improved to be equal to or less than the predetermined threshold (step S303). In the determination process of step S303, if it is determined that the new communication error rate has improved below the predetermined threshold, the display device including the display control unit 112 and the display unit 113 has affected communication. Determination is made to maintain the clock frequency of the display device after the change (step S304), and the processing shown in FIG. 6 ends.

  If it is determined in step S303 that the new communication error rate has not improved below the predetermined threshold, the display device including the display control unit 112 and the display unit 113 affects the communication. Therefore, the CPU 130 controls the clock signal generator 140 so as to restore the clock frequency of the display device whose clock frequency has been changed (step S305). The clock signal generator 140 is controlled so as to change the clock frequency of the clock signal to be supplied (step S306).

  Then, the CPU 130 controls the communication circuit 104, acquires the latest communication error rate, and determines whether or not the new communication error rate has improved to be equal to or less than the predetermined threshold (step S307). In the determination process of step S307, if it is determined that the new communication error rate has improved below the predetermined threshold, it is determined that the LAN module 118 has affected the communication, and the clock of the LAN module 118 is determined. The frequency shown in FIG. 6 is terminated by maintaining the frequency after the change (step S308).

  If it is determined in step S307 that the new communication error rate has not improved below the predetermined threshold, it can be seen that the LAN module 118 does not affect the communication. Then, the clock signal generator 140 is controlled so as to restore the clock frequency of the LAN module 118 whose clock frequency has been changed (step S309).

  Thereafter, the CPU 130 of the mobile phone terminal according to this embodiment changes the clock frequency changing device in order, and checks whether the communication error rate has improved to a predetermined threshold value or less, thereby performing communication. A device affecting the processing is specified, and the clock frequency of the specified device is maintained at the changed one so that the communication quality does not deteriorate.

  In this example, when the communication error rate is larger than a predetermined threshold during the communication process, the CPU 130 determines (1) display device → (2) LAN module → (3) camera module → (4 ) USB I / F → (5) The device that changes the clock frequency is changed in the order of the GPS module.

  As a result, for all devices that may affect communication processing by operating, it is possible to identify which device is affecting communication processing and to influence that communication processing. By changing the clock frequency, the communication quality can always be kept good.

  As described above, the clock frequency is changed to a predetermined frequency, but the changed frequency is selected so as not to be a divisor or multiple of the communication frequency. If the clock frequency of each part is a divisor or multiple of the communication frequency, it will synchronize with the communication frequency and the possibility of affecting the communication signal is increased. This is because the clock signal supplied to each device can be prevented from interfering with the communication signal without being a divisor or multiple of the communication frequency.

  In this way, it is possible to prevent each device from affecting the communication signal by changing the frequency of the drive clock signal of the device instead of stopping the operation of the device. In this case, the operation of the device that is not directly related to the communication process is not stopped, so other processes are performed in parallel with the communication process, or the process smoothly proceeds to the process after the communication process. There are advantages such as being able to.

  Further, when the communication process is completed after maintaining the changed frequency, the clock frequency of the device that maintains the changed frequency is restored to the original clock frequency. Of course, not only when the clock frequency is automatically restored when the communication process is completed, for example, a device that maintains the changed clock frequency and maintains the changed clock frequency is used. In such a case, the clock frequency may be restored to the original frequency.

  In addition, when there is a device that maintains the clock frequency after the change, it is possible to notify the user of this and return the clock frequency to the original clock frequency according to the user's instruction. In other words, the device whose clock frequency has been changed because it has affected the communication process is restored to the original clock frequency at an appropriate timing so that the subsequent operation is not hindered.

[Modification 1 of Sensitivity Suppression Improvement Process (2)]
In the case of the sensitivity suppression improvement process (2), as in the modified example of the sensitivity suppression process (1) described with reference to FIG. 5, priority is given to a device that frequently affects the communication process by operating. Thus, the clock frequency can be changed.

  Also in the first modification of the sensitivity suppression improvement process (2), the device tables as shown in FIGS. 3 and 4 are used. In the case of this example, the device table stop maintenance frequency is managed as the clock frequency change maintenance frequency in FIGS. Then, as the number of times the clock frequency change is maintained, the device that is the target of changing the clock frequency in the sensitivity suppression improvement processing is preferentially set.

  Therefore, also in the case of the modification 1 of the sensitivity suppression improvement process (2) described below, the device table shown in FIGS. 3 and 4 will be described as being formed in the EEPROM 111. In the case of this example, as described above, the number of times that the stop is maintained in FIGS. 3 and 4 is the number of times that the clock frequency is changed and maintained.

[Specific Processing of Modification 1 of Sensitivity Suppression Improvement Processing (2)]
Next, a specific process of Modification 1 of the sensitivity suppression improvement process (2) performed using the device tables shown in FIGS. 3 and 4 will be described. FIG. 7 is a flowchart for explaining specific processing of Modification 1 of the sensitivity suppression improvement processing (2). The process shown in FIG. 7 is a process that is repeatedly executed at predetermined timings by the CPU 130 when the communication process is performed through the communication circuit 104, as in the case of the process described with reference to FIG. It is.

  Also in the process shown in FIG. 7, first, the CPU 130 controls the communication circuit 104 to detect the current communication error rate, and the detected communication error rate is preset in the ROM 109 or the like, for example. It is determined whether or not the communication error rate is greater than a predetermined threshold (step S401).

  If it is determined in step S401 that the communication error rate is not greater than the predetermined threshold, the communication quality has not deteriorated, and the process shown in FIG. 7 is terminated. If it is determined in step S401 that the communication error rate is greater than a predetermined threshold, it is determined that the communication quality has deteriorated, and a value “1” is substituted for the variable P indicating the priority ( Step S402).

  Then, the P-ranked device is identified from the information in the device table, and the CPU 130 changes the clock frequency of the identified device by controlling the clock signal generator 140 (step S403). Then, the CPU 130 controls the communication circuit 104, acquires the latest communication error rate, and determines whether or not the new communication error rate has improved to be equal to or less than the predetermined threshold (step S404).

  If it is determined in step S404 that the new communication error rate has not improved below the predetermined threshold, the CPU 130 controls the clock signal generator 140 and changes the clock frequency in step S403. The clock frequency of the device with the priority ranking P is restored (step S405). Thereafter, it is determined whether or not the priority indicated by the variable P is the last priority (step S406).

  Note that whether the priority order is the last can be specified according to the number of registered devices in the device table, as described above. That is, in the case of the example shown in FIGS. 3 and 4, the registered devices are the display device, the LAN module, the camera module, the USB I / F, and the GPS module, so the final priority is 5th. become.

  If it is determined in step S406 that the priority indicated by the variable P is not the last priority, 1 is added to the variable P (step S407), and then the processing from step S403 is repeated. That is, the clock frequency change target is moved to the next priority device. When determining in step S406 that the priority indicated by the variable P is the last priority, the CPU 130 ends the process shown in FIG.

  If it is determined in step S404 that the new communication error rate has improved to a predetermined threshold value or less, the clock frequency of the device whose priority is changed to the P-th rank in step S403 is changed. Is maintained after the change (step S408). Then, the CPU 130 accesses the device table formed in the EEPROM 111, and adds the value “1” to the number of times of maintaining the stop of the P-th priority device that maintains the stopped state this time (step S409). .

  Thereafter, the CPU 130 updates the priority order of the device table in the EEPROM 111 based on the current clock change maintenance count (step S410). Specifically, as in the case of the modified example of the sensitivity suppression improvement process (1) described with reference to FIG. 5, the CPU 130 refers to the clock frequency change maintenance count of each device and increases the change maintenance count in descending order. Try to assign priorities. If there is a device having the same number of change maintenance times, a new priority is assigned according to the order indicated by the immediately preceding priority. Thereafter, the CPU 130 ends the process shown in FIG.

  In this way, by changing the clock frequency of the device, the communication error rate is improved to a predetermined threshold value or less, and the clock frequency of the device is maintained at the changed one. The clock frequency change maintenance count in the device table shown in FIG. 4 is updated, and the clock frequency change order (priority order) in the sensitivity suppression improvement processing is appropriately updated according to the updated change maintenance count. To be able to.

  Then, as described with reference to FIG. 4, the priority of a device having a large number of clock frequency change maintenance times is made higher, which affects communication processing, and the number of clock frequency change maintenance times increases. The devices can be used as devices that change the clock frequency in the sensitivity suppression improvement processing in order from the devices that are present.

  As a result, it is possible to identify a device that affects communication processing as quickly as possible and change the clock frequency of the device so that the sensitivity suppression state can be avoided in the shortest possible time. Is prevented from deteriorating.

  Also, in the case of the modified example 1 of the sensitivity suppression improvement process (2), the frequency after the change is maintained and then the frequency after the change is maintained when the communication process is completed. The device clock frequency is restored to the original clock frequency. Of course, not only when the clock frequency is automatically restored when the communication process is completed, for example, a device that maintains the changed clock frequency and maintains the changed clock frequency is used. In such a case, the clock frequency may be restored to the original frequency.

  In addition, when there is a device that maintains the clock frequency after the change, it is possible to notify the user of this and return the clock frequency to the original clock frequency according to the user's instruction. In other words, the device whose clock frequency has been changed because it has affected the communication process is restored to the original clock frequency at an appropriate timing so that the subsequent operation is not hindered.

[Modification 2 of Sensitivity Suppression Improvement Process (2)]
In the case of the modified example 1 of the sensitivity suppression improvement process (2) and the sensitivity suppression improvement process (2) in which the clock frequency is changed for each device, the clock frequency to be changed has been described as one predetermined. However, it is not limited to this. It is also possible to select an optimum one from a plurality of clock frequencies.

  In the case of modification 2 of the sensitivity suppression improvement processing (2) described below, a plurality of clock frequencies that can be changed for each device are determined in advance, and an optimum one is selected and used. Is something that can be done. In the following, for simplicity of explanation, the communication frequency used in the communication circuit 104 is 800 MHz, and the clock frequency of each device is set to a plurality of frequencies that are not divisors or multiples of the communication frequency. A case will be described as an example.

  FIG. 8 is a diagram for explaining a device table used in the mobile phone terminal of this embodiment in the case of the second modification of the sensitivity suppression improving process (2). In the device table of this example, in addition to the information specifying the device (module), the number of times the clock frequency is changed and maintained, and the priority order, there are provided columns of changeable clock frequency candidates (indicated as clock frequency in FIG. 8) It is what was done. The device table shown in FIG. 8 is also formed in the EEPROM 111.

  In the case of the example illustrated in FIG. 8, for the display device including the display control unit 112 and the LCD 113, four types of clock frequency candidates of 21 MHz, 22 MHz, 23 MHz, and 24 MHz are registered. For the LAN module 118, candidates for four types of clock frequencies of 96 MHz, 97 MHz, 98 MHz, and 99 MHz are registered.

  Similarly, for the camera module 120, four types of clock frequency candidates of 31 MHz, 32 MHz, 33 MHz, and 34 MHz are registered. For the USB I / F 121, four types of clock frequency candidates of 8 MHz, 9 MHz, 11 MHz, and 12 MHz are registered. For the GPS module 122, four types of clock frequency candidates of 41 MHz, 42 MHz, 43 MHz, and 44 MHz are registered.

  In the second modification, the same processing as that in the flowchart described with reference to FIG. 7 is performed. However, the clock frequency changing process performed in step S403 shown in FIG. 7 is optimum from among the clock frequency candidates registered in advance based on the clock frequency candidate information in the device table shown in FIG. To be chosen.

  FIG. 9 is a flowchart for explaining the clock change process to be performed in step S403 of the process shown in FIG. 7 in the case of the second modification of the sensitivity suppression improvement process (2).

  The CPU 130 first sets a value “1” to a variable i for designating a clock frequency candidate (step S501). Then, the clock frequency is changed to the i-th clock frequency in the device table shown in FIG. 8 (step S502), the communication circuit 104 is controlled to detect a communication error rate (communication error rate) (step S503), The communication error rate detected in step S503 is stored in the i-th storage area ERR (i) of the communication error rate (step S504).

  Next, the CPU 130 determines whether or not the variable i for designating a clock frequency candidate is a value “1” (step S505). In the determination process of step S505, when the variable i is “1”, the variable i is the first candidate of the clock frequency, and therefore the variable i is put into the variable x for specifying the clock frequency with the best communication error rate (step S505). S507).

  When determining that the variable i is not the value “1” in the determination process in step S505, the CPU 130 determines that the communication error rate ERR (i) detected in step S503 is the best communication detected so far. It is determined whether or not the error rate ERR (x) has been improved (step S506).

  If it is determined in step S506 that the current communication error rate ERR (i) is improved from the best communication error rate ERR (x) detected so far, the CPU 130 determines that the communication error rate is The variable i is entered into the variable x for specifying the best clock frequency (step S507).

  After the process of step S507 or in the determination process of step S506, it is determined that the current communication error rate ERR (i) is not improved from the best communication error rate ERR (x) detected so far. In this case, the CPU 130 determines whether or not the variable i is the last clock frequency candidate prepared in advance (step S508). In this embodiment, as shown in FIG. 8, since there are four clock frequency candidates, it is determined that the variable i is the last when “i = 4”.

  When it is determined in step S508 that the variable i is not the last, the CPU 130 adds 1 to the variable i (step S509), and repeats the processing from step S502.

  Further, when it is determined in step S508 that the variable i is the last, as described above, the variable x is the clock frequency with the lowest communication error rate among the clock frequencies prepared in advance. The x-th clock frequency is specified as the best clock frequency (step S510), and the x-th clock frequency is changed in step S403 shown in FIG. It will be used as.

  In the mobile phone terminal of this embodiment, the identification result in step S510 of the process shown in FIG. 9 is updated to the clock frequency candidate column in the device table shown in FIG. In this example, as shown in the column of clock frequency candidates in FIG. 8, “23 MHz” for the display device, “97 MHz” for the LAN module, “31 MHz” for the camera module, USB I / F It is shown that “12 MHz” is specified for “44 MHz” and “44 MHz” is specified for the GPS module.

  In this way, the clock frequency with the lowest communication error rate is selected and used as the clock frequency after the change from among a plurality of clock frequencies that can be changed. As a result, it is possible to change the clock frequency more appropriately and prevent the operation of each device from affecting the communication processing than when the changed clock frequency is fixed to one. Become.

[Others]
In the above-described embodiment, the case where a display device, a LAN module, a camera module, a USB I / F, and a GPS module are mounted as devices that may affect communication processing has been described as an example. However, it is not limited to this. The present invention can also be used when other various devices are mounted.

  Also, it is not always necessary to mount a plurality of devices that may affect communication processing, and it is sufficient that one or more devices are mounted.

  Further, even when the clock frequency is changed for each device, the number of clock frequencies as candidates prepared in advance as the changed clock frequency is four in the above-described embodiment, but is not limited thereto. It is not a thing. You may make it prepare the clock frequency as an appropriate number of 1 or more types of candidates.

  Further, the clock frequency to be changed may be created based on a predetermined calculation formula. For example, it is of course possible to create as many times as necessary, such as creating five types of candidates every 3 MHz with reference to a predetermined clock frequency.

  In the above-described embodiment, the case where the present invention is applied to a mobile phone terminal has been described as an example. However, the present invention is not limited to this. The present invention can be applied to various mobile communication terminals having a communication function.

In a broad sense, in various electronic devices, not only the communication function but also the target processing is performed, and if there are many errors in the result of the processing, the devices that are operating simultaneously are stopped. The present invention can be applied to the case where the target processing can be accurately performed by changing the clock frequency of the device portions operating simultaneously. However, in particular, when applied to a mobile communication device, a great effect can be achieved in that a communication function, which is an original basic function, can always be appropriately operated.

  In the mobile phone terminal of the above-described embodiment, the function of the communication error rate detection means is realized by the communication circuit 104, and each of the determination means, the stop control means, the detection control means, the improvement determination means, and the change control means. The control unit centering on the CPU 130 realizes its function. The function of the storage means is realized by the EEPROM 111, and the function of the updating means and the priority order setting means is realized by the CPU 130. Further, the CPU 130 also realizes the function of the clock control means.

  Also, a program for executing the processing shown in FIGS. 2, 5, 6, 7, and 9 is created and stored in the ROM 109, or recorded in the EEPROM 111 as necessary. The functions according to the present invention can be installed in various mobile phone terminals and mobile communication terminals.

It is a block diagram for demonstrating the mobile telephone terminal to which one embodiment of this invention was applied. It is a figure for demonstrating the sensitivity suppression improvement process (1) performed with the mobile telephone terminal shown in FIG. It is a figure for demonstrating the device table which manages the frequency | count of a stop maintenance for every device. It is a figure for demonstrating the device table which manages the frequency | count of a stop maintenance for every device. It is a flowchart for demonstrating the specific process of the modification of a sensitivity suppression improvement process (1). It is a flowchart for demonstrating the sensitivity suppression improvement process (2) which changes the clock frequency of a device. It is a flowchart for demonstrating the specific process of the modification 1 of a sensitivity suppression improvement process (2). It is a figure for demonstrating the device table used in the case of the modification 2 of a sensitivity suppression improvement process (2). It is a flowchart for demonstrating the clock change process performed in step S403 of the process shown in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 101 ... Control line, 102 ... Data line, 103 ... Transmission / reception antenna, 104 ... Communication circuit, 105 ... D / A converter, 106 ... Speaker, 107 ... Microphone, 108 ... A / D converter, 109 ... ROM, 110 ... RAM 111 111 EEPROM 112 Display control unit 113 Display unit 114 Key operation unit 115 Press detection unit 116 Ring control unit 117 Vibration device 118 LAN module 119 LAN transmission / reception Antenna, 120 ... Camera module, 121 ... USB I / F, 122 ... GPS module, 123 ... GPS receiving antenna

Claims (4)

Detecting means for detecting a communication error rate during communication;
Determining means for determining whether or not the communication error rate detected by the detecting means is greater than a predetermined threshold;
Stop control means for controlling to stop the operation of a predetermined device portion when the error rate is determined by the determination means to be greater than a predetermined threshold ;
Detection control means for controlling the detection means to detect a new communication error rate after the operation of the predetermined device portion is stopped by the control of the stop control means;
Improvement discriminating means for discriminating whether or not the new communication error rate detected by the control of the detection control means has improved below the predetermined threshold;
When the improvement determining means determines that the new communication error rate has not improved below the predetermined threshold, the operation of the device that has stopped operating is restarted and the stop control means is controlled. And change control means for controlling to change the device to stop the operation by controlling to stop the operation of the other device.
Mobile communication terminal. The mobile communication terminal according to claim 1 ,
Storage means for storing and holding the number of operation stop maintenance for each device that is subject to operation stop control;
An update means for updating the number of times of stoppage of the storage means when the improvement determination means determines that the new communication error rate has improved to be equal to or less than the predetermined threshold;
Based on the stop maintaining the number stored and held for each device in the storage means, Ru and a priority setting means for locating more devices stop order of the stop maintaining the number of the upper
Mobile communication terminal. A detection step of detecting a communication error rate during communication;
A determination step of determining whether or not the communication error rate detected in the detection step is greater than a predetermined threshold;
A stop control step for controlling to stop the operation of the predetermined device portion when the error rate is determined to be greater than a predetermined threshold in the determination step ;
A re-detection step of detecting a new communication error rate after stopping the operation of the predetermined device portion in the stop control step;
An improvement determination step of determining whether or not the new communication error rate detected in the re-detection step has improved to be equal to or less than the predetermined threshold;
In the improvement determination step, when it is determined that the new communication error rate has not improved below the predetermined threshold, the operation of the device that has stopped operating is restarted and the operation of other devices is also stopped. And a change control step for controlling to change the device to stop the operation by controlling
Desensitization method of improving mobile communication terminal. A method for improving sensitivity suppression of a mobile communication terminal according to claim 3 ,
In the improvement determining step, when it is determined that the new communication error rate has improved to be equal to or less than the predetermined threshold value, a predetermined number of times that the operation stop maintenance is stored and held for each device subjected to the operation stop control An update step for updating the number of times the memory has been stopped, and
Based on the stop maintaining the number stored and held for each device in the predetermined memory, that have a and priority setting step of positioning more devices stop order of the stop maintaining the number of the upper
Desensitization method of improving mobile communication terminal.

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