JP3946066B2 - Mobile phone, control program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mobile phone, and more particularly to a technique for suppressing the strength of a transmission radio wave transmitted from a mobile phone.
[0002]
[Prior art]
In recent years, transmission radio waves (electromagnetic waves) transmitted in mobile phones that are becoming widespread are transmitted regardless of when talking or in standby, as long as the mobile phone is powered on. The intensity of the transmission radio wave is automatically controlled according to the distance from the mobile phone to the base station, the surrounding environment where the mobile phone is present, and the like.
[0003]
[Problems to be solved by the invention]
By the way, there are voices concerned about the danger that strong transmission radio waves transmitted from a mobile phone will adversely affect electronic devices and human bodies existing in the vicinity.
For this reason, it is generally recommended to turn off the mobile phone in hospitals where there are many medical electronic devices or in places where unspecified people are crowded, such as in trains. There is a problem of forgetting to turn off the mobile phone.
[0004]
In view of the problem, the present invention provides a mobile phone capable of suppressing transmission radio waves transmitted from a mobile phone without the user turning off the power, and a control program used for the mobile phone. Objective.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a mobile phone according to the present invention is a mobile phone that controls the transmission power to increase or decrease reflecting the increase or decrease of the control value, and accepting means for accepting designation of a threshold value from a user; Threshold storage means for storing the accepted threshold value, and determination means for determining the control value to be equal to or less than the stored threshold value.
[0006]
Here, the transmission power is the magnitude of power amplified in the transmission amplifier circuit inside the mobile phone. The intensity of the transmitted radio wave increases as the transmission power value increases.
Since the mobile phone according to the present invention receives the specification of the threshold value from the user and determines the control value to be equal to or lower than the threshold value, the user does not have to turn off the power of the mobile phone by specifying the threshold value. The transmission radio wave transmitted from the mobile phone can be suppressed to some extent.
[0007]
The control program is a control program that includes a CPU and causes a mobile phone that controls the transmission power to increase or decrease to reflect the increase or decrease of the control value, and performs the transmission power determination process. And a reception step of receiving designation of a threshold value for transmission power control from a user, and a determination step of determining the control value to be equal to or less than the received threshold value.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
<Configuration>
FIG. 1 is a functional block diagram of mobile station 100 in the embodiment of the present invention. The mobile station 100 includes an antenna unit 101, a transmission unit 102, a reception unit 103, a control unit 104, a transmission power determination unit 105, a display unit 106, a speaker unit 107, an interface unit 108, and a storage unit 109. Note that functions that are not necessary for describing the present invention are omitted.
[0009]
The antenna unit 101 is a whip antenna for transmission and reception, transmits a received electromagnetic wave as a reception signal to the reception unit 103, and transmits a transmission signal transmitted from the transmission unit 102 as a transmission radio wave.
The receiving unit 103 has a function of amplifying and demodulating the reception signal transmitted from the antenna unit 101. The demodulated received signal is transmitted to the control unit 104.
[0010]
The received signal includes a TPC (Transmission Power Control) signal transmitted from the base station during a call. The TPC signal is a signal for the base station to instruct the magnitude of the transmission power of the mobile phone.
The base station continuously receives transmission radio waves transmitted from mobile phones in the cell, but when the mobile phone is in a call state and a communication channel is established, the received power value indicating the strength of the received transmission radio waves And a TPC signal indicating the magnitude of the transmission power necessary for the mobile phone to communicate based on the received power value is transmitted.
[0011]
The instruction by the TPC signal is an instruction to either increase or decrease the transmission power, and transmits a TPC signal indicating an instruction to increase when the reception power is small and an instruction to decrease when the reception power is large.
The transmission unit 102 has a function of modulating a transmission signal transmitted from the control unit 104 and amplifying the transmission signal to a desired transmission power value in accordance with an instruction from the control unit 104. The modulated and amplified transmission signal is transmitted to the antenna unit 101.
[0012]
The interface unit 108 has a function of accepting various types of input information from a numeric keypad operation by the user, and in particular, has a function of accepting a threshold value for transmission power control. The received input information is transmitted to the control unit 104.
The control unit 104 includes a CPU (Central Processing Unit) and a DSP (Digital Signal Processor) that perform general processing and control as a mobile phone.
[0013]
In addition, the control unit 104 has an RSSI (Received Signal Strength Indicator) circuit, and when receiving a signal transmitted from the base station during standby, the RSSI circuit detects a received power value of the received signal. It has a function.
The transmission power determination unit 105 is a function of the control unit 104 and has a function of determining a control value so as to be equal to or less than the threshold value when a transmission power control threshold value is received from the user.
[0014]
Specifically, at the time of a call, the threshold value received from the user is compared with the control value specified by the instruction of the TPC signal transmitted from the base station, and the received power value detected at the standby time is compared. Comparison with the required transmission power control value specified from The necessary transmission power control value is a control value that can be obtained from the reception power value and that outputs the transmission power necessary for the transmission radio wave to reach the base station.
[0015]
When a control value equal to or greater than the threshold value is required in each comparison, the transmission power control unit 105 has a function of determining the threshold value as a control value and further notifying the user that there is a possibility that call transmission may be disabled.
The display unit 106 is a display device such as an LCD (Liquid Crystal Display) and has a function of displaying characters, symbols, pictures, and the like. In particular, when a screen display request for setting a transmission power upper limit is received from the user by the interface unit 108, a transmission power upper limit setting screen is displayed.
[0016]
FIG. 2 is a transmission power upper limit setting screen displayed on the display unit 106. When this screen is displayed, the user can set a threshold value indicating the upper limit of transmission power by operating the numeric keypad and inputting a numerical value in the input field 201. In the present embodiment, it is possible to accept an input in 1 dB steps with a minimum transmission power of −24 dB and a maximum of 0 dB.
[0017]
FIG. 3 is a warning screen displayed on the display unit 106 when the transmission power is limited by the threshold.
The speaker unit 107 has a function of outputting a ring tone or the like. Further, when there is a possibility that communication cannot be performed with the threshold received from the user, it is also possible to notify the speaker unit 107 with sound as a warning.
[0018]
The storage unit 109 is a storage medium such as a non-volatile memory, and stores data transmitted from the control unit 104 and various processing programs executed by the control unit 104. Among them, in particular, a threshold value for transmission power control received from the user, a program for transmission power determination processing, and a control value table indicating a correspondence relationship between the received power value and the required transmission power control value are stored.
[0019]
FIG. 5 is a diagram illustrating a control value table stored in the storage unit 109. When the control unit 104 detects the reception power value 301, the control unit 104 refers to the control value table and identifies the necessary transmission power control value 302.
<Operation>
A transmission power determination process of the mobile phone according to the present invention, which is performed when a threshold value indicating an upper limit of transmission power is set by the user, will be described.
[0020]
FIG. 4 is a flowchart of a transmission power determination process performed by the transmission power determination unit 105 when a threshold is set.
First, the threshold for transmission power control received from the user is stored in the storage unit 109 (step S101).
When the state of the mobile phone is a call state (step S102: call), a TPC signal transmitted from the base station is received (step S103), and a control value (B) instructed from the TPC signal is received from the user. The threshold value (A) is compared (step S104).
[0021]
As a result of the comparison, when the control value (B) instructed is smaller than the threshold value (A) (step S105: Yes), the control value is determined to be the instructed control value (B) (step S108).
Further, when the control value (B) instructed is larger than the threshold value (A) (step S105: No), the control value is determined to be the threshold value (A) (step S106), and there is a possibility that communication cannot be performed. Is notified to the user (step S107).
[0022]
In step S102, when the state of the mobile phone is in the standby state (step S102: standby), the received power value is detected in the RSSI circuit (step S109).
The required transmission power control value (C) is identified from the detected received power value with reference to the control value table stored in the storage unit 109 (step S110). The received threshold value (A) is compared (step S111).
[0023]
As a result of the comparison, when the required transmission power control value (C) is smaller than the threshold (A) (step S112: Yes), the control value is determined as the required transmission power control value (C) (step S113).
If the required transmission power control value (C) is larger than the threshold value (A) (step S112: No), the control value is determined to be the threshold value (A) (step S106) and the user is informed that communication cannot be performed. Notification is made (step S107).
[0024]
<Supplement>
As described above, the embodiments of the cellular phone according to the present invention have been described, but the present invention is not limited to these embodiments. That is,
(1) In the mobile phone according to the present invention, the threshold for transmission power control received from the user is set in 1 dB steps, but may be 2 dB steps, 4 dB steps, and the unit may be mW or the like. Furthermore, not limited to specific transmission power values, levels indicated by A, B, C, etc. may be used as threshold values, and levels shown pictorially may be used as threshold values. That is, any value that reflects an increase or decrease in transmission power may be used.
[0025]
FIG. 6 is a transmission power level setting screen pictorially showing the transmission power level. The transmission power level 401 is a minimum transmission power level, the transmission power level 402 is a standard transmission power level, and the transmission power level 403 is a maximum transmission power level. When a certain transmission power level is set by a button operation from the user, the transmission power is controlled so that the threshold indicated by the transmission power level is set as the upper limit.
[0026]
(2) In the embodiment, when there is a possibility that communication may be disabled, the user is notified by a display screen or sound. However, the user may be notified by a vibrator provided in the mobile phone.
(3) When a control value for outputting the maximum transmission power of the mobile phone is determined, the user may be notified by displaying a warning screen, outputting a warning sound, or vibrating by a vibrator. FIG. 7 is a warning screen displayed when the maximum transmission power is output.
[0027]
(4) In the embodiment, when there is a possibility that communication may be disabled, the mobile phone a having the transmission power upper limit set is notified that communication may be disabled, but is communicating with the mobile phone a You may make it notify the other party's mobile telephone b that there exists a possibility that it may become impossible to communicate because the mobile telephone a has set the transmission power upper limit.
[0028]
In this case, the mobile phone a has a function of transmitting information indicating that the transmission power upper limit has been set to the partner mobile phone b via the base station before the communication becomes impossible. The other party mobile phone b becomes unable to communicate because the mobile phone a has a transmission power upper limit set by display on the mobile phone display, sound from the speaker, or vibration of the vibrator corresponding to the information. It has a function to notify that there is a fear.
[0029]
(5) In the embodiment, the necessary transmission power control value corresponding to the received power value detected by the RSSI circuit at the time of standby is specified from the control value table stored in the storage unit 109. Thus, the necessary transmission power control value may be calculated.
[0030]
【The invention's effect】
As is clear from the above description, the mobile phone according to the present invention is a mobile phone that controls the transmission power to increase or decrease by reflecting the increase or decrease of the control value, and a receiving unit that receives the designation of the threshold value from the user. Threshold value storing means for storing the received threshold value, and determining means for determining the control value to be equal to or less than the stored threshold value.
[0031]
A control program that includes a CPU and that causes a mobile phone that controls increase / decrease in transmission power to reflect increase / decrease in a control value, performs transmission power determination processing, wherein the transmission power determination processing includes transmission power control A receiving step of accepting designation of a threshold value for use from a user, and a determining step of determining the control value so as to be equal to or less than the accepted threshold value.
[0032]
Thereby, even if a user does not turn off a power supply, the transmission radio wave transmitted from a mobile telephone can be suppressed as much as possible by designating a threshold value.
Furthermore, since the power consumed as transmission power can be suppressed, the use time in one charge of the mobile phone is extended.
Further, the mobile phone is a mobile phone that receives control value instruction information for instructing the control value from a base station in a call state, and further includes a first specific control value specified by the control value instruction information; Comparing means for comparing with a threshold value stored in the threshold value storing means is provided, and in the comparison, if the first specific control value is larger than the threshold value, the user is notified that communication may be disabled. It is good also as providing a communication failure notification means.
[0033]
When calling, if the transmission power necessary for reaching the transmission radio wave to reach the base station is not output by designating the threshold value, the user is notified that there is a risk of communication failure, so the notification is not made. Meanwhile, the user can make a call while suppressing the strength of the transmission radio wave. Further, even if the base station considers communication impossible and disconnects the communication channel, the reason for disconnection becomes clear to the user.
[0034]
Further, the mobile phone further accepts an electromagnetic wave transmitted from the base station in a reception standby state, and detects the received power value of the electromagnetic wave, and the comparing means is based on the detected received power value. The specified second specific control value is compared with the threshold value stored in the threshold value storage means. If the second specific control value is larger than the threshold value in the comparison, communication is performed by the communication failure notification means. It is good also as notifying a user that there exists a possibility that it may become impossible.
[0035]
At the time of standby, if the transmission power necessary for reaching the transmission radio wave to reach the base station is not output by specifying the threshold value, the user is notified that there is a possibility that the communication may be disabled. While not being performed, the user can stand by in a state where the strength of the transmission radio wave is suppressed.
In addition, when a control value that maximizes the transmission power is determined, an adverse effect notification unit that notifies the user that the transmission radio wave may adversely affect an electronic device in the vicinity may be provided. Good.
[0036]
This makes it clear to the user when the maximum transmission radio wave is being transmitted from the mobile phone, and is a guideline for taking measures to suppress the transmission radio wave. The measure is, for example, lowering the threshold value for transmission power control.
[Brief description of the drawings]
FIG. 1 is a functional block diagram of a mobile phone according to the present invention.
FIG. 2 is a transmission power upper limit setting screen.
FIG. 3 is a warning screen displayed when necessary transmission power is limited by a threshold value.
FIG. 4 is a flowchart of transmission power determination processing.
FIG. 5 is a control value table showing correspondence between received power values and required transmission power control values.
FIG. 6 is a transmission power level setting display screen.
FIG. 7 is a warning screen displayed when transmission power is maximum.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 100 Cellular phone 101 Antenna part 102 Transmission part 103 Reception part 104 Control part 105 Transmission power determination part 106 Display part 107 Speaker part 108 Interface part 109 Storage part

Claims (5)

A mobile phone that controls the transmission power to increase or decrease reflecting the increase or decrease of the control value,
Accepting means for accepting specification of a threshold value from a user;
Threshold storage means for storing the received threshold;
Receiving means for receiving control value instruction information transmitted by the base station to instruct the magnitude of transmission power of the mobile phone in a call state;
Specifying means for specifying the first control value based on the control value instruction information received by the receiving means;
Comparison means for comparing the first control value with a threshold value stored in the threshold value storage means;
As a result of comparison, when the first control value is less than or equal to the threshold, it is determined to use the first control value as the control value, and when the first control value is greater than the threshold, the threshold is controlled. Determining means for determining to use as a value ;
A cellular phone comprising: a communication failure notification means for notifying a user that communication may be disabled when the first control value is greater than the threshold value as a result of comparison . A mobile phone that controls to increase or decrease the transmission power reflecting the increase or decrease of the control value,
Accepting means for accepting specification of a threshold value from a user;
Threshold storage means for storing the received threshold;
Detecting means for receiving an electromagnetic wave transmitted from the base station in a reception standby state and detecting a received power value of the electromagnetic wave;
Specifying means for specifying a first control value based on a received power value of the electromagnetic wave detected by the detecting means;
Comparison means for comparing the first control value with a threshold value stored in the threshold value storage means;
As a result of comparison, when the first control value is less than or equal to the threshold, it is determined to use the first control value as the control value, and when the first control value is greater than the threshold, the threshold is controlled. Determining means for determining to use as a value;
Comparison of results, wherein, when the first control value is larger than the threshold value, mobile phone you anda incommunicable notifying means for notifying that it may become incommunicable user. When the control value that maximizes the transmission power is determined, the apparatus includes an adverse effect notification means for notifying a user that a transmission radio wave may adversely affect an electronic device existing nearby. The mobile phone according to claim 1 or 2 . A control program that includes a CPU and causes a mobile phone that controls the transmission power to increase or decrease to reflect the increase or decrease of the control value, performs transmission power determination processing,
The transmission power determination process includes
An accepting step for accepting specification of a threshold value from a user;
A receiving step of receiving control value instruction information transmitted by the base station to instruct the magnitude of transmission power of the mobile phone in a call state;
A specifying step of specifying the first control value based on the received control value indicating information;
A comparison step of comparing the first control value with the received threshold;
As a result of comparison, when the first control value is less than or equal to the threshold, it is determined to use the first control value as the control value, and when the first control value is greater than the threshold, the threshold is controlled. A decision step to decide to use as a value ;
And a communication failure notification step of notifying a user that communication may be disabled when the first control value is larger than the threshold value as a result of comparison . A control program that includes a CPU and causes a mobile phone that controls the transmission power to increase or decrease to reflect the increase or decrease of the control value, performs transmission power determination processing,
An accepting step for accepting specification of a threshold value from a user;
A detection step of receiving an electromagnetic wave transmitted from the base station in a reception standby state and detecting a received power value of the electromagnetic wave;
A specifying step of specifying a first control value based on the detected received power value of the electromagnetic wave;
A comparison step of comparing the first control value with the received threshold;
As a result of comparison, when the first control value is less than or equal to the threshold, it is determined to use the first control value as the control value, and when the first control value is greater than the threshold, the threshold is controlled. A decision step to decide to use as a value;
As a result of the comparison, if the first control value is greater than the threshold value, a communication failure notification step for notifying the user that communication may be disabled; and
A control program comprising:

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