JP2008028910A - Mobile terminal and control program for mobile terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a mobile terminal which can avoid influence of a built-in antenna on communication only when such influence occurs. <P>SOLUTION: When a touch sensor disposed in a casing portion in the vicinity of the built-in antenna of the mobile terminal detects the touch of a human body (step S201:Y), only during radio communication and only in a communication status below a threshold value (step S203:Y, stepS205:Y), warning is implemented (step S207, step S208). An increase in transmission power can be requested from a base station of a communicating party just during this period of time and transmission power of the its own terminal can also be increased, thereby avoiding the influence caused by capability reduction of the built-in antenna. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a mobile phone, a PHS, a PDA having a communication function, a portable terminal such as a small computer having a communication function, and a control program for the mobile terminal, and particularly considering the quality of wireless communication with a built-in antenna. The present invention relates to a mobile terminal and a control program for the mobile terminal.

  Mobile terminals such as cellular phones, PHS (Personal Handy-phone System), PDA (Personal Digital Assistant) with communication functions, and small computers with communication functions are widely used as personal terminals. In such a portable terminal, ensuring communication quality is the most important matter. For this reason, mobile phone companies and operators are making various capital investments such as the development of new technologies and the addition of base stations in order to provide stable communication quality.

  On the other hand, mobile terminals are becoming smaller and thinner, and the design is also regarded as important. Along with this, the tendency to change the external antenna protruding outside the device to a built-in antenna has become remarkable.

  In the case of a portable terminal equipped with an external antenna, the user can always grasp the position of the antenna. Therefore, when communication quality deteriorates, the user himself or herself has secured the communication quality by extending or changing the direction of the external antenna. Also, since the external antenna is often placed at the tip of the device, it is usually used away from the human body.

  However, when an antenna is housed inside the device, it is closer to the human body and more susceptible to the influence than an external antenna. Further, the user cannot know in which part of the device the antenna is housed. For this reason, there is a case where a finger is put on the device main body portion at a position where the internal antenna is easily affected by communication, and this causes deterioration of the antenna characteristics, which is also one cause of communication interruption. Yes.

Therefore, it has been proposed to issue a warning when a hand touches a housing part near the built-in antenna of the device (see, for example, Patent Document 1). In this proposal, a contact sensor is arranged in a housing part near the built-in antenna, and when the touch sensor detects a finger contact, the gain of the built-in antenna is reduced thereby, so that the speaker is not touched. I am going to warn you.

Japanese Patent Laying-Open No. 2005-064988 (paragraphs 0016 to 0018, FIG. 4)

  However, in this proposal, when the user is editing the built-in phone book or taking a picture with the camera, for example, when the gain reduction of the built-in antenna is not related to the function of the mobile terminal currently being performed. Also, a warning is given to release the finger from a specific area of the housing. For this reason, when operating a portable terminal, the area | region which must not always touch will exist, and it was inconvenient.

  Therefore, an object of the present invention is to provide a portable terminal that can avoid the influence only when communication is affected by the built-in antenna.

  In the first aspect of the present invention, (b) a wireless communication means housed in the housing, (b) a built-in antenna housed in the housing and connected to the wireless communication means, and (c) a built-in antenna. A human body approach detection sensor that detects when a part of the human body approaches the surroundings of the human body, and (d) a warning when the human body approach detection sensor detects the approach of the human body while the wireless communication means is performing wireless communication. The mobile terminal is provided with warning generation means for emitting

  That is, in the present invention, when the human body approach detection sensor detects that a part of the human body is approaching the built-in antenna, a warning is generated when the wireless communication means is performing wireless communication. That is, no warning is generated except in a state where the built-in antenna is used, so that the area touching the mobile terminal is not inadvertently limited.

  In the invention according to claim 2, (b) a wireless communication means housed in the housing, (b) a built-in antenna housed in the housing and connected to the wireless communication means, and (c) a built-in antenna. A human body approach detection sensor that detects when a part of the human body approaches the surroundings of the human body, and (d) when the human body approach detection sensor detects the approach of the human body while the wireless communication means is performing wireless communication. A transmission power increase request means for requesting an increase in transmission power to the terminal; and (e) a transmission power increase request when the human body approach detection sensor no longer detects the approach of the human body while the wireless communication means is performing wireless communication. The portable terminal is provided with transmission power increase request canceling means for canceling a request for increasing transmission power to the terminal by the means.

  That is, in the present invention, when the human body approach detection sensor detects that a part of the human body is approaching the built-in antenna, the wireless communication means requests an increase in transmission power to the own terminal when performing wireless communication. In the meantime, even when the reception capability of the built-in antenna is reduced, this decrease in capability is compensated. When the human body approach detection sensor no longer detects the approach of the human body, the transmission power increase requesting means cancels the request for increasing the transmission power to the own terminal, thereby avoiding adverse effects on the communication of other communication terminals.

  In the invention according to claim 3, (b) a wireless communication means housed in the housing, (b) a built-in antenna housed in the housing and connected to the wireless communication means, and (c) a built-in antenna. A human body approach detection sensor that detects when a part of the human body approaches the surroundings of the human body, and (d) a warning when the human body approach detection sensor detects the approach of the human body while the wireless communication means is performing wireless communication. And (e) a transmission power increase request means for requesting an increase in transmission power to the terminal when the human body approach detection sensor detects the approach of the human body while the wireless communication means is performing wireless communication. (F) When the wireless communication means is performing wireless communication and the human body approach detection sensor no longer detects the approach of the human body, the transmission power increase request means solves the request for increasing the transmission power to the terminal. Causing a transmission power increase request canceling means for being provided to the mobile terminal.

  That is, in the present invention, when the human body approach detection sensor detects that a part of the human body is approaching the periphery of the built-in antenna, the wireless communication means generates a warning while performing the wireless communication, while the built-in antenna Even if the reception capability of the built-in antenna is reduced by requesting an increase in transmission power to the terminal when the wireless communication means is performing wireless communication until a part of the human body moves away from the surroundings of the I made up for the decline. When the human body approach detection sensor no longer detects the approach of the human body, the transmission power increase requesting means cancels the request for increasing the transmission power to the own terminal, thereby avoiding adverse effects on the communication of other communication terminals.

  In the control program for a portable terminal according to claim 7, (a) a wireless communication means, a built-in antenna connected to the wireless communication means, and a human body that detects when a part of the human body approaches the built-in antenna (B) causing a computer of a portable terminal equipped with an approach detection sensor to execute warning generation processing that issues a warning when the human body approach detection sensor detects the approach of a human body in a state where the wireless communication means is performing wireless communication. It is characterized by.

  That is, according to the present invention, there is provided a portable terminal including a wireless communication unit, a built-in antenna connected to the wireless communication unit, and a human body approach detection sensor that detects a part of the human body when the human body approaches the built-in antenna. Let the computer execute a warning generation process that issues a warning when the human body approach detection sensor detects the approach of a human body while the wireless communication means is performing wireless communication, and generates a warning except when the built-in antenna is used Control that does not occur.

  9. The portable terminal control program according to claim 8, wherein: (a) a wireless communication means, a built-in antenna connected to the wireless communication means, and a human body that detects when a part of the human body approaches the built-in antenna. (B) When the human body approach detection sensor detects the approach of the human body in a state where the wireless communication means is performing wireless communication, the computer of the portable terminal provided with the proximity detection sensor is requested to increase the transmission power to the own terminal. Transmission power increase request processing, and (c) Transmission power increase request cancellation processing for canceling transmission power increase request processing when the human body approach detection sensor no longer detects approach of the human body while the wireless communication means is performing wireless communication. Are executed.

  That is, according to the present invention, there is provided a portable terminal including a wireless communication unit, a built-in antenna connected to the wireless communication unit, and a human body approach detection sensor that detects a part of the human body when the human body approaches the built-in antenna. Transmission power increase request processing for requesting an increase in transmission power to the terminal when the human body approach detection sensor detects the approach of the human body while the wireless communication means is performing wireless communication with the computer, and human body approach detection in this state Appropriate reception both when the reception capability of the terminal is reduced and when it recovers by executing the transmission power increase request cancellation processing that cancels the transmission power increase request processing when the sensor no longer detects the approach of the human body Is possible.

  In the portable terminal control program according to claim 9, (a) a wireless communication means, a built-in antenna connected to the wireless communication means, and a human body that detects when a part of the human body approaches the built-in antenna (B) When the human body approach detection sensor detects the approach of the human body in a state where the wireless communication means is performing wireless communication, a warning is issued to the computer of the mobile terminal provided with the proximity detection sensor and the transmission power to the own terminal is Warning output / transmission power increase request processing requesting increase, and (c) Warning output / transmission power increase request when the human body approach detection sensor no longer detects approach of the human body while the wireless communication means is performing wireless communication. A warning output / transmission power increase request canceling process for canceling the process is executed.

  That is, according to the present invention, there is provided a portable terminal including a wireless communication unit, a built-in antenna connected to the wireless communication unit, and a human body approach detection sensor that detects a part of the human body when the human body approaches the built-in antenna. Warning output / transmission power increase request processing for issuing a warning to the computer when the human body approach detection sensor detects the approach of the human body while the wireless communication means is performing wireless communication, and requesting an increase in transmission power to the terminal itself; In this state, when the human body approach detection sensor no longer detects the approach of the human body, it is possible to execute the warning output / transmission power increase request cancel processing to cancel the warning output / transmission power increase request processing, thereby receiving the reception capability of the own terminal Control that does not generate a warning except when the built-in antenna is used, while allowing proper reception both when the And it represents.

  As described above, according to the present invention, the place where the mobile terminal is touched is not particularly limited except in the communication state. Therefore, when the mobile terminal is used for a purpose other than communication as recently as a multifunctional mobile terminal, Does not cause any inconvenience. In addition, when a part of the user's body such as a hand accidentally approaches a position that reduces the capability of the built-in antenna during communication, transmission of radio waves is confirmed before confirming the decrease in transmission / reception capability. Since it is possible to request the transmission side to increase the transmission power, it is possible to maintain the communication quality by taking a quicker action particularly in the case of a device that communicates in the same frequency band such as 3GPP (3rd Generation Partnership Project). . In addition, when such an approach does not occur, the transmission power returns to the previous state, so that the influence of noise on other communication terminals can be minimized. Further, by limiting such control during communication, power consumption can be reduced.

  Hereinafter, the present invention will be described in detail with reference to examples.

  FIG. 1 shows a main part when viewed from the side with a foldable mobile phone as a mobile terminal according to an embodiment of the present invention opened. The mobile phone 100 includes a first housing 101 in which a liquid crystal display and a speaker (both not shown) are arranged on the front as the left side of the figure, and various operation keys and microphones on the front as the left side. A second housing 102 in which (not shown) is arranged is provided. The first housing 101 and the second housing 102 are connected by a hinge mechanism 103 and can be freely opened and closed.

  In the present embodiment, a built-in antenna 104 having a predetermined length is accommodated in the vicinity of the lower end portion of the first casing 101 in a vertical direction with respect to the paper surface in this drawing. In addition, a contact sensor 105 is attached to the vicinity of the lower end of the rear surface as the right surface of the first casing 101 in the same manner as the vertical direction with respect to the paper surface in this figure with the same length as the built-in antenna 104.

  FIG. 2 is a view of the cellular phone as viewed from the back with the cellular phone opened. In the vicinity of the lower end portion of the first casing 101 of the mobile phone 100, a built-in antenna 104 is arranged in parallel with an axis (not shown) of the hinge mechanism 103 as indicated by a broken line, and the contact sensor 105 is located at a corresponding position. Is arranged.

  FIG. 3 shows the main part of the circuit configuration of the mobile phone of this embodiment. The cellular phone 100 includes a baseband LSI (Large Scale Integration) 121. In addition to communication with a radio base station (not shown), the baseband LSI 121 performs signal processing of digital data used for transmission / reception to / from other devices such as a mobile phone (not shown) using a radio communication technology such as Bluetooth. Chip. The baseband LSI 121 can also be regarded as an integrated circuit in which main circuits including an RF (Radio Frequency) unit, a baseband unit, and peripheral circuits are integrated into one chip. The baseband LSI 121 includes a CPU (Central Processing Unit) 122 and a storage unit 123 that stores a control program for the CPU 122 to perform various controls. The storage unit 123 is also used as a working memory for the CPU 122 and a memory for storing various data.

  Baseband LSI 121 is connected to each part of mobile phone 100. Among these, the wireless device 125 connected to the built-in antenna 104 performs processing related to wireless transmission / reception. When data transmission is performed, data modulated from the baseband LSI 121 via the wireless device 125 is transmitted from the built-in antenna 104. In addition, data received from the built-in antenna 104 is demodulated by the wireless device 125 and input to the baseband LSI 121.

  The contact sensor 105 is called a touch sensor or a tactile sensor, and not only detects the presence / absence of contact by an electrical change such as a change in capacitance or a change in conductivity, but also takes into account the contact area of the finger. There are also multi-value contact sensors. If a multi-value contact sensor is used, it is possible to detect how much of the built-in antenna 104 is covered with a finger by multi-value.

  The sound source IC (Integrated Circuit) 126 is an IC circuit that incorporates, for example, a 3D (three dimension) audio function and can simultaneously generate a large number of sounds. A stereo ringing melody and various voice messages can be output to the receiver 127 according to the sound source data supplied from the baseband LSI 121. In the present embodiment, when the user presses a finger or a part of the body against the housing portion close to the built-in antenna 104 and there is a possibility of adversely affecting communication, the sound source IC 126 is used to generate an alarm sound. It is designed to output. It goes without saying that the sound source IC 126 and the receiver 127 can be used for various other purposes.

  Vibrator 128 is a vibration generator used to call mobile phone 100 for an incoming call or the like. For example, vibrator 128 rotates a vibrator motor to generate vibration due to its eccentricity. The vibrator 128 is also used to generate a warning under a predetermined condition when the user affects the built-in antenna 104. Of course, the vibrator 128 can be used for various other purposes such as notification of incoming calls. The vibrator 128 is connected to the power supply IC 129 and is driven under the control of the baseband LSI 121.

  By the way, the cellular phone 100 of this embodiment uses the built-in antenna 104 for wireless transmission and reception as is apparent from FIGS. 1 to 3, and does not project the antenna outside the housing. As described above, this is in response to the demand for diversification of the external design of the mobile phone. As a result, the user can know where the built-in antenna 104 is arranged on the mobile phone 100. Can not.

  However, the human body is a conductor rich in moisture. For this reason, when a part of a human body such as a finger is present in the immediate vicinity of the built-in antenna 104, a large part of radio waves to be propagated between the mobile phone 100 and an external base station or communication terminal (both not shown) Will be absorbed. As a result, when the communication environment is bad, there may be a case where a radio wave having a sufficient level does not reach the communication destination or a radio wave transmitted from the communication destination does not reach a sufficient level on the mobile phone 100 side. . In addition, even when a sufficient level of radio waves may reach the communication destination when the communication environment is good, the result may be that the transmission level of the mobile phone 100 itself is higher than usual. There arises a problem that the speed of power consumption becomes significant. Therefore, in this embodiment, when the user touches the contact sensor 105, the CPU 122 performs a predetermined warning operation based on the detection result.

  In this embodiment, whether or not the transmitted radio wave is at a sufficient level is determined by measuring the reception level or BER (Bit Error Rate). In addition, warnings to users are divided into a situation where communication is being performed and a situation where communication is not being performed. In the situation where communication is being performed, no warning is generated when the communication environment is not bad. I am doing so.

  Consider how the user holds the mobile phone with reference to FIGS. 4 and 5. FIG. 4 shows an unpreferable example of how to hold a mobile phone. In the case of FIG. 4, the user's index finger 142 is in contact with the lower contact sensor 105 in order to press the first casing 101 of the mobile phone against the user's head 141. Other fingers 143 such as a thumb (not shown) grip the second housing 102. In such a way of holding the mobile phone 100, the index finger 142 is disposed in the immediate vicinity of the built-in antenna 104, which greatly affects transmission / reception of the radio wave 146 and greatly reduces transmission / reception characteristics.

  FIG. 5 shows the correct way of holding the cellular phone. The user holds the second housing 102 of the mobile phone 100 with five fingers including the index finger 142. For this reason, a part of the human body such as the index finger 142 is not in contact with the contact sensor 105 in the immediate vicinity of the built-in antenna 104. Thereby, the user's hand 147 does not greatly affect transmission / reception of the radio wave 146.

  Since the built-in antenna 104 of the mobile phone 100 cannot be seen from the outside, the user cannot recognize its position. Further, the position of the built-in antenna 104 may be different if the model of the mobile phone 100 is different. Therefore, in this embodiment, when the mobile phone 100 is not held well and communication cannot be performed well, a warning is issued to guide the correct holding method.

  FIG. 6 shows a state of control in which a warning regarding the built-in antenna is generated in the present embodiment. This control is realized by the CPU 122 shown in FIG. 3 executing the control program stored in the storage unit 123 in the same manner as the control for stopping the warning described below. This will be described with reference to FIG.

  The CPU 122 monitors whether or not the contact sensor 105 is touched by the user (step S201). When contact of the contact sensor 105 is detected (Y), it is checked whether the warning execution flag is turned on (step S202). Here, when the warning execution flag is turned on / off, the state is stored in the storage unit 123. When the warning is given by sound at the receiver 127 or when the warning is given by vibration at the vibrator 128. Warning execution flag is on. If the warning execution flag is on (step S202: Y), the process returns to step S201 again (return).

  If contact with the contact sensor 105 has not been detected until now, or if contact with the contact sensor 105 has been detected once but the user has stopped following the warning, the warning is performed as described later. The flag is off. When contact of the contact sensor 105 is detected in this state (step S201: Y), the warning execution flag is off (step S202: N). In this case, the CPU 122 checks whether or not the mobile phone 100 is currently performing wireless communication (step S203). Even when the user touches the contact sensor 105 in a state where wireless communication is not performed (N), the user is not in a state of using the built-in antenna 104. Therefore, there is no need to issue a warning for this, and the processing is terminated as it is (return).

  On the other hand, if wireless communication is performed in a state in which the contact of the contact sensor 105 is detected (step S203: Y), a warning may have to be performed. Therefore, the CPU 122 acquires current information about the wireless communication state (step S204). For example, whether the reception level at the time of communication is a normal value or BER is measured to determine whether the bit error rate is within a predetermined normal range. Unless this result is a case where the result is less than a specific threshold value and it seems that the communication is adversely affected (step S205: N), it is not necessary to warn the user because wireless communication is possible. . Therefore, in this case as well, the process ends without giving a warning (return).

  On the other hand, as shown in FIG. 4, when a part of the user's index finger 142 or the like is in contact with the contact sensor 105 and the performance of the built-in antenna 104 is deteriorated, communication is interrupted (step) S205: Y), this state needs to be improved. Therefore, the CPU 122 warns the contact sensor 105 that the user's body is in contact, but checks whether or not the communication currently being performed is by voice in order to determine the form of the warning (step S206). ). As a result, if voice communication is being performed (Y), it is not preferable to generate sound, so the power supply IC 129 is controlled to start the vibration of the vibrator 128 (step S207).

  When voice communication is not performed, for example, when a home page is browsed using a browser, or when a television program is viewed (step S206: N), the sound source IC 126 is displayed. This warning data is sent to generate an alarm sound (step S208). Instead of the alarm sound, a melody or a warning message set by the user may be used. At this time, the start of vibration of the vibrator 128 may be used in combination.

  When the vibration of the vibrator 128 or the output of the alarm sound is started in step S207 or step S208, the warning execution flag is turned on (step S209). In a state where the warning execution flag is turned on, the warning is continuously performed. Of course, the warning may be turned off at a fixed time by a timer circuit (not shown).

  FIG. 7 shows a state of control for ending the warning regarding the built-in antenna in this embodiment. The CPU 122 periodically checks whether the warning execution flag is on (step S221). If it is not turned on, there is no warning by sound or vibration, so the processing is terminated as it is (return).

  On the other hand, when the warning execution flag is turned on (step S221: Y), whether the contact of the contact sensor 105 is not detected (step S222) or the wireless communication is ended (step S223). stand by. During this time, the alarm using the alarm sound by the receiver 127 or the vibration by the vibrator 128 continues.

  When the user notices a warning and stops contact with the human body from the contact sensor 105 (step S222: Y), when the wireless communication itself is terminated (step S223: Y), the CPU 122 performs voice communication as the wireless communication performed so far. Is checked (step S224). If it is voice communication (step S224: Y), the alarm sound is stopped (step S225). If the communication is other than voice communication (step S224: N), the vibration of the vibrator 128 is stopped (step S226). As described above, when the warning is performed using both the receiver 127 and the vibrator 128, both the warnings are stopped. When the stop process in step S225 or step S226 ends, the CPU 122 turns off the warning execution flag (step S227) and ends the process (return).

  <First Modification of Invention>

  By the way, in a CDMA (Code Division Multiple Access) system using spread spectrum technology, a plurality of users share the same frequency band. So, regardless of the distance from the base station, if each mobile phone transmits radio waves with the same transmission power, the signal sent from a distant mobile phone is strong because the radio waves from the mobile phone near the base station are strong. The problem that it becomes impossible to isolate | separate occurs. In order to solve such problems, communication quality is ensured by performing closed-loop transmission power control. In other words, the quality of the communication channel is measured on the receiving side, and the transmission power control (TPC: Transmitter Power Control) bit is used so that the communication channel being received satisfies the desired quality based on the measurement result. To transmit.

  By the way, for example, it is assumed that the user of the mobile phone 100 shown in FIG. 1 suddenly touches the contact sensor 105 with the index finger 142 as shown in FIG. As a result, the capability of transmission / reception using the built-in antenna 104 is reduced, and conventionally, the BER is measured on the radio wave reception side to determine the setting pattern of the transmission power control bits. Communication quality is improved by performing closed loop control.

  However, in this conventional method, control of increase in transmission power corresponding to the decrease in transmission / reception capability is performed unless the communication quality has once deteriorated due to a part of the user's human body touching the contact sensor 105. I can't. The first modification of the present invention solves this problem.

  FIG. 8 shows a state of power control instruction of the mobile phone in the first modification. This will be described with reference to FIG. When the CPU 122 detects that a human body has come into contact with the contact sensor 105 (step S301: Y), the CPU 122 checks whether or not the deterioration notification flag indicating that the communication quality has deteriorated is turned off (step S302). Here, the deterioration notification flag is stored in the storage unit 123.

  The case where the deterioration notification flag is off is a time point when the user has just suddenly brought the forefinger 142 into contact with the contact sensor 105 as shown in FIG. If the deterioration notification flag is off (step S302: Y), a power increase pattern based on the transmission power control bit is generated (step S303). Here, control for increasing the power by one step may be performed by closed-loop control, but this does not allow rapid control. Therefore, in the first modification, an amount of power increase corresponding to a decrease in communication capability of the built-in antenna 104 assumed when a human body such as the index finger 142 contacts the contact sensor 105 is obtained in advance and requested. Generate a pattern to do. This transmission power control bit is transmitted to a base station (not shown) through a return channel (step S304). Then, the deterioration notification flag is turned on (step S305).

  On the other hand, in the state where the human body is detected by the contact sensor 105 (step S301: Y), if it is detected in step S302 that the deterioration notification flag is turned on (N), again, this If a special transmission power control bit is transmitted, the amount of increase in transmission power will be exceeded, and the process ends without performing any processing (return).

  Of course, this is not the case when performing the process of controlling the amount of power step by step. Of course, the power may be increased by a preset increase amount, and then the BER may be measured on the receiving side to finely adjust the power level to an appropriate value.

  In this way, after performing power control commensurate with a decrease in the communication capability of the built-in antenna 104, it is assumed that the user releases the forefinger 142 from the contact sensor 105, for example, according to the warning described in the previous embodiment. The same applies when the human body stops touching the contact sensor 105 regardless of whether or not there is a warning. In such a case (step S301: N), if the deterioration notification flag is on (step S306: Y), the CPU 122 does not need to increase the transmission power, so the CPU 122 uses the power by the transmission power control bit. A power reset pattern for returning (resetting) the control is generated (step S307). Then, this is transmitted to the base station through the return channel (step S308), and the deterioration notification flag is turned off (step S309).

  In the first modification, the contact sensor 105 detects a part of the human body and requests the base station to increase the transmission power to keep the reception level constant. The transmission power to be transmitted may be increased correspondingly.

  <Second Modification of Invention>

  By the way, in the embodiment, the same warning is generated even if the tip of one finger touches the contact sensor 105 or many fingers touch. However, the influence of the touch on the built-in antenna 104 is taken into consideration. The state may be examined and a warning corresponding to this may be generated.

  FIG. 9 shows the main part of the circuit configuration of a mobile phone when a multi-value contact sensor that takes into account the finger contact area is used. A multi-value contact sensor 401 arranged in a relatively wide area corresponding to a built-in antenna (not shown) includes a plurality of detection sectors 402 in a matrix shape, whereby an area in contact with a human body such as a finger or a detection sector is provided. This is a sensor that detects the number 402 and outputs the result in multiple values. The output level 403 of the multi-value contact sensor 401 is input to the comparison circuit 404 and compared with one or more preset threshold values 405. Based on this comparison result, a determination signal 406 as to whether or not to issue a warning that the internal antenna is affected is output.

  Also in this modification, the determination signal 406 is combined with other conditions such as the current communication state to determine whether an alarm is finally output. In the case of this modification, since the influence on the built-in antenna can be determined in a plurality of stages, it is possible to finely set how to issue an alarm according to various situations. The multi-value output of the detection result as described above or the output of the analog detection level can be performed in the same manner even if a non-contact sensor is used.

  Moreover, if the second embodiment is applied to the first modification, it is possible to more accurately indicate the amount of power required for the base station to increase.

  In the embodiment described above, the warning that the built-in antenna 104 is too close is performed only when the communication quality is deteriorated during wireless communication. However, the warning may be performed regardless of whether the communication quality is good or bad. . Thereby, the mobile phone 100 can perform efficient wireless communication, and battery consumption can be further reduced.

  In the embodiment, the contact sensor 105 is used and a warning is generated on the condition that the human body comes into contact with the contact sensor 105. However, a part of the human body is also located near the built-in antenna 104 using the non-contact sensor. It is also possible to detect the presence and generate a warning.

  Furthermore, in the embodiment and the modification, a specially provided sensor is used as the contact sensor 105. However, depending on the location of the built-in antenna 104, it can be shared with a touch sensor used for other purposes in a mobile terminal such as a mobile phone. .

  In the embodiment, the warning by sound is performed by the receiver 127, but it may be performed by a speaker (not shown).

It is a side view of the state which opened the folding-type mobile phone as a portable terminal of one Example of this invention. It is a rear view of the state which opened the mobile telephone of a present Example. It is a block diagram showing the principal part of the circuit structure of the mobile telephone of a present Example. It is explanatory drawing showing the example unpreferable as how to hold the mobile telephone of a present Example. It is explanatory drawing showing a preferable example as how to hold the mobile telephone of a present Example. It is a flowchart showing the mode of the control which the warning regarding a built-in antenna generate | occur | produces in a present Example. It is a flowchart showing the mode of the control which is complete | finished when the warning regarding the built-in antenna is performed in a present Example. It is a flowchart showing the mode of the instruction | indication of the power control of the mobile telephone in the 1st modification of this invention. It is a block diagram showing the principal part of the circuit structure of the mobile telephone at the time of using the multi-value contact sensor which considered the contact area of the finger in the 2nd modification of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Mobile phone 101 1st housing | casing 102 2nd housing | casing 103 Hinge mechanism 104 Built-in antenna 105 Contact sensor 121 Baseband LSI
122 CPU
123 storage unit 126 sound source IC
127 Receiver 128 Vibrator 129 Power IC
401 Multi-value contact sensor 404 Comparison circuit

Claims (9)

Wireless communication means housed inside the housing;
A built-in antenna housed in the housing and connected to the wireless communication means;
A human body proximity detection sensor for detecting when a part of the human body approaches the built-in antenna, and
A portable terminal comprising: warning generation means for issuing a warning when the human body approach detection sensor detects approach of a human body while the wireless communication means is performing wireless communication. Wireless communication means housed inside the housing;
A built-in antenna housed in the housing and connected to the wireless communication means;
A human body proximity detection sensor for detecting when a part of the human body approaches the built-in antenna, and
Transmission power increase request means for requesting an increase in transmission power to the terminal when the human body approach detection sensor detects the approach of a human body in a state where the wireless communication means is performing wireless communication;
Increase in transmission power for canceling the request for increase in transmission power to the terminal by the transmission power increase request means when the human body approach detection sensor no longer detects approach of the human body while the wireless communication means is performing wireless communication A portable terminal comprising request release means. Wireless communication means housed inside the housing;
A built-in antenna housed in the housing and connected to the wireless communication means;
A human body proximity detection sensor for detecting when a part of the human body approaches the built-in antenna, and
Warning generating means for issuing a warning when the human body approach detection sensor detects the approach of a human body in a state where the wireless communication means is performing wireless communication;
Transmission power increase request means for requesting an increase in transmission power to the terminal when the human body approach detection sensor detects the approach of a human body in a state where the wireless communication means is performing wireless communication;
Increase in transmission power for canceling the request for increase in transmission power to the terminal by the transmission power increase request means when the human body approach detection sensor no longer detects approach of the human body while the wireless communication means is performing wireless communication A portable terminal comprising request release means.   The portable terminal according to any one of claims 1 to 3, wherein the human body approaching detection sensor is a contact sensor disposed on a surface portion of the housing in the vicinity of the built-in antenna.   The portable terminal according to any one of claims 1 to 3, wherein the human body approaching detection sensor is a non-contact sensor disposed inside the casing in the vicinity of the built-in antenna.   4. The portable terminal according to claim 1, further comprising a communication quality determination unit that determines whether the communication status is good, wherein the warning generation unit is a unit that issues a warning when the communication status is not good. To a computer of a portable terminal provided with wireless communication means, a built-in antenna connected to the wireless communication means, and a human body approaching detection sensor that detects when a part of the human body approaches the built-in antenna,
A control program for a portable terminal, wherein a warning generation process for issuing a warning when the human body approach detection sensor detects approach of a human body in a state where the wireless communication means is performing wireless communication is executed. To a computer of a portable terminal provided with wireless communication means, a built-in antenna connected to the wireless communication means, and a human body approaching detection sensor that detects when a part of the human body approaches the built-in antenna,
A transmission power increase request process for requesting an increase in transmission power to the terminal when the human body approach detection sensor detects the approach of a human body in a state where the wireless communication means is performing wireless communication;
A transmission power increase request canceling process for canceling the transmission power increase request processing is executed when the human body approach detection sensor no longer detects the approach of a human body while the wireless communication means is performing wireless communication. A mobile terminal control program. To a computer of a portable terminal provided with wireless communication means, a built-in antenna connected to the wireless communication means, and a human body approaching detection sensor that detects when a part of the human body approaches the built-in antenna,
A warning output / transmission power increase request process for issuing a warning when the human body approach detection sensor detects the approach of a human body in a state where the wireless communication means is performing wireless communication and requesting an increase in transmission power to the terminal,
A warning output / transmission power increase request cancellation process for canceling the warning output / transmission power increase request process when the human body approach detection sensor no longer detects approach of a human body while the wireless communication means is performing wireless communication; A control program for a mobile terminal, characterized in that

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