JPH1013322A - Mobile radio terminal and its operating method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a mobile radio terminal whereby power consumption during stand-by it saved. SOLUTION: A system is provided with a display equipment for displaying a character or a icon, etc., a driver 11 for driving the display equipment 12, a control part 10 for controlling the operation of the driver 11, a detecting means 21 for detecting information which indicates the outside/inside of a call service area, an operating means for detecting call service area outside information and also for stopping at least a part of display in the display equipment 12 after the lapse of a prescribed time and a returning means for returning the display of the display equipment 12 to the normal operation at the time of a key input or re-entry to the call service area when the display of the display equipment 12 is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile wireless terminal, and more particularly to a technique for extending standby time in a mobile wireless telephone terminal such as a portable telephone having a display function or a simplified portable telephone.

[0002]

2. Description of the Related Art A mobile radio telephone terminal is powered on,
The operating state includes a busy state, a standby state, and other states. During a call, a call or communication is being performed using a mobile radiotelephone terminal. During standby, a location is registered with a base station within a call service area, and a call from the base station is received. A state in which a call can be handled, and other than that means a state outside the call service area.

[0003] One of the performances of a mobile radiotelephone terminal is an available time, which includes a talk time and a standby time.
The talk time is a time during which a call can be made before the battery capacity runs out, and the standby time is a time during which the standby state can be maintained before the battery capacity runs out. Here, a technique for increasing the standby time will be described. The length of the standby time is determined by how small the current consumption during standby and how large the battery capacity is.

In order to satisfy the prolonged usable time, a battery having a large capacity is desired. However, since portability is important for mobile radiotelephone terminals, there is a strong demand for small size and light weight, and it has been difficult to achieve both small size and light weight and large capacity batteries. The battery capacity is limited not only by the size of the mobile radio telephone terminal but also by the price. In order not to increase the price more than necessary, the capacity of the battery needs to be as small as possible.

[0005] As described above, the capacity of a usable battery is as follows.
In order to increase the length of the "standby time", we would like to decide on a large "capacity", but it is limited by the relationship between "portability" and "price" and is determined by these relationships. Therefore, it is desired to reduce the current consumption and reduce the load on the battery. Here, in order to prolong the standby time, the current consumption in the standby mode is reduced, that is, power is saved.

The components of the current consumption during standby include a current consumption component required by the receiving circuit for standby, and a current consumption component required by the display in a mobile radio telephone terminal having the display. There is. With the advance of wireless circuit technology, the current consumption of the current components required by the receiving circuit has been reduced, and recently, the current consumption of the display has been desired to be reduced.

[0007] The reduction of the current consumption component required by the display circuit during standby has been dealt with by reducing the function of the display itself or adjusting the display time of the display. For example, in the former case, in the full dot type display, the number of rows to be displayed is reduced to reduce the display area, or the current consumption is reduced as a segment type display with low current consumption.

An example of adjusting the display time of the latter display device is disclosed in Japanese Patent Application Laid-Open No. 5-102910. This means that the power supply of the display driver circuit and the display control power supply are shut off when there is no incoming call or key input for a predetermined time, and the power supply is made when there is an incoming call or key input while the power is off. Is to resume.

[0009] If a mobile radiotelephone terminal is actually used, it is a normal state to repeatedly use a call and a standby. The terminal may be out of the call service area or in a state where the user does not need to be in sight during a break. For this reason, in addition to the above-described conventional example, it is desired to reduce current consumption so as to be suitable for a telephone system currently used. Specifically, there is a need to reduce the current consumption considering the situation inside and outside the call service area, reduce the current consumption considering the remaining battery level, and reduce the current consumption corresponding to various usage conditions. There is a demand for a longer reception time.

[0010]

In a mobile radiotelephone terminal such as a cellular phone or a simplified cellular phone, the use place is one.
There is great convenience in being able to carry around without being limited to a particular location. When carrying around, the user may move inside and outside the call service area. In particular, the call service area of a simplified cellular phone has a narrow range that can be covered by one base station, and thus it is commercially difficult to widen the area call service area. Out of the call service area, outgoing / incoming calls are of course not possible. Conventionally, low current consumption countermeasures in consideration of a call service area have not been taken. For this reason, there is a demand for a low current consumption countermeasure in consideration of a call service area.

Although it is convenient to be able to move and use the battery, it is easy to worry about the remaining available time when the remaining battery power decreases as the battery runs down. Batteries actually used in mobile phones and simplified mobile phones are mainly secondary batteries. As the type of the secondary battery, a lithium ion storage battery, a nickel hydride storage battery, or the like is mainly used. Even when the battery is used at normal charging intervals, the timing of charging may sometimes be delayed.When the battery is fully charged while going out, the demand for relatively low current consumption is relatively small, but the remaining battery power is low. As the number decreases, the demand for lower current consumption increases. Conventionally, measures for low current consumption corresponding to the remaining battery level have been
Had not been done. For this reason, a low current consumption countermeasure according to the remaining battery level is desired.

The frequency of use of the mobile radiotelephone terminal depends on the person who uses the mobile radiotelephone terminal, but is often in a standby state during the day. Furthermore, among them, there is no intention to use,
In other words, there are many times when display on the display is unnecessary. As a method of detecting a case where the key input is not used, there is a conventional method of detecting a case where a key input is not performed for a predetermined time or more. However, if the display is not displayed after a short period of key input, it may be inconvenient. For example, if the mobile radio telephone terminal with a timer function is moving and not used as a telephone, but using a display as a clock function or a stopwatch function, the usability is deteriorated. Therefore, in addition to the state that is not used as a phone,
Under certain conditions, the display on the display is unnecessary,
There is a need for a flexible and low-current consumption countermeasure that can be selected from the viewpoint of the user.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide a mobile wireless terminal such as a mobile phone or a simplified mobile phone which can further save power during standby. I do.

A first object of the present invention is to provide a mobile radio terminal capable of saving power during standby by setting a display to a power saving state in response to detection of information outside a call service area. I do.

A second invention provides a mobile radio terminal capable of saving power during standby by setting a display to a power saving state after a lapse of a predetermined time from detection of information outside a call service area. Aim.

According to a third aspect of the present invention, the display is set to a power-saving state in response to the detection of information outside the call service area, and the display is returned from the power-saving state to a normal state by a key input so that the standby power-saving state is established. It is another object of the present invention to provide a mobile wireless terminal capable of securing display during key operation.

According to a fourth aspect of the present invention, there is provided a mobile radio terminal capable of saving power during standby by stopping display of at least a part of a display after a predetermined time has elapsed from detection of information outside a call service area. The purpose is to provide.

According to a fifth aspect of the present invention, a mobile radio terminal capable of saving power during standby by intermittently operating at least a part of the display of a display after a predetermined time has elapsed from detection of information outside a call service area. The purpose is to provide.

According to a sixth aspect of the present invention, at least a part of the display is intermittently operated after a predetermined time has passed since the detection of the information outside the call service area, and the time display frequency of the intermittent operation in the display of the display is determined by: It is an object of the present invention to provide a mobile wireless terminal capable of saving power during standby by decreasing the value according to the elapse of time from the detection of the information outside the call service area.

According to a seventh aspect of the present invention, there is provided a mobile radio terminal capable of saving power during standby by stopping display of at least a part of a display when a remaining battery level becomes a predetermined value or less. The purpose is to provide.

According to an eighth aspect of the present invention, there is provided a mobile radio terminal capable of saving power during standby by intermittently operating at least a part of the display when the remaining battery power falls below a predetermined value. The purpose is to provide.

According to a ninth aspect of the present invention, a pictogram "battery remaining amount" indicating the remaining battery level of the display when the remaining battery level falls below a predetermined value.
It is an object of the present invention to provide a mobile wireless terminal capable of saving power during standby by performing an intermittent operation of.

A tenth aspect of the present invention provides a mobile radio terminal capable of saving power during standby by stopping display of at least a part of the display when it is not in use. The purpose is to:

According to an eleventh aspect of the present invention, there is provided a mobile radio terminal capable of saving power during standby by intermittently operating at least a part of a display when the display is not in use. The purpose is to do.

According to a twelfth aspect, a state not used is
It is an object of the present invention to provide a mobile radio terminal capable of detecting by utilizing the fact that the received electric field strength is a fluctuation equal to or less than a predetermined value while the received electric field strength is constant and saving power during standby.

According to a thirteenth aspect, the state not used is
It is an object of the present invention to provide a mobile radio terminal capable of detecting by utilizing the fact that the base station unique number does not fluctuate for a certain period and saving power during standby.

According to a fourteenth aspect, there is provided an operation method of a mobile radio terminal capable of saving power during standby by setting a display to a power saving state in response to movement outside a call service area. With the goal.

A fifteenth aspect of the present invention provides an operation method of a mobile radio terminal capable of saving power during standby by setting a display to a power saving state after a lapse of a predetermined time from movement outside a call service area. The purpose is to do.

According to a sixteenth aspect of the present invention, the display is set to a power saving state in response to movement to the outside of the call service area, and the display is returned from the power saving state to a normal state by a key input, thereby saving power during standby. It is another object of the present invention to provide an operation method of a mobile wireless terminal capable of ensuring display at the time of key operation.

According to a seventeenth aspect of the present invention, at least a portion of the display is intermittently operated after a predetermined time has elapsed from the movement to the outside of the call service area, and the time display frequency of the intermittent operation in the display of the display is determined by: It is an object of the present invention to provide an operation method of a mobile wireless terminal that can reduce power consumption during standby by reducing the power consumption as time elapses from the time of moving out of a call service area.

[0031]

According to a first aspect of the present invention, there is provided a mobile radio terminal, a display for displaying predetermined information, a driver for driving the display, and a control unit for controlling the operation of the driver. And detection means for detecting information indicating the inside and outside of the call service area, and, in response to detection of the information outside the call service area by the detection means, sets the display to a power saving state, and detects information in the call service area. The display is returned to the normal state from the power saving state in response.

In the mobile radio terminal according to the second invention,
A display for displaying predetermined information, a driver for driving the display, a control unit for controlling the operation of the driver, and a detecting unit for detecting information indicating inside and outside of the call service area, Means for setting the display to a power saving state after a predetermined time has elapsed from the detection of the information outside the call service area by the means, and returning the display from the power saving state to the normal state in response to the detection of the information within the call service area. Features.

In the mobile radio terminal according to the third invention,
If there is a key input in the power saving state of the display,
The display is returned from a power saving state to a normal state.

In the mobile radio terminal according to the fourth invention,
A display for displaying characters or pictograms, a driver for driving the display, a control unit for controlling the operation of the driver, detection means for detecting information indicating inside and outside of the call service area, and a call service area Operating means for detecting outside information and stopping the display of at least a part of the display after a predetermined time has elapsed, and when the display of the display is stopped, there is a key input or a call service area. When it is re-entered, it has a return means for returning the display on the display to a normal operation.

In the mobile radio terminal according to the fifth invention,
A display for displaying characters or pictograms, a driver for driving the display, a control unit for controlling the operation of the driver, detection means for detecting information indicating inside and outside of the call service area, and a call service area Operating means for intermittently operating at least a part of the display on the display after detecting outside information and after a lapse of a predetermined time; and performing a key input or a call service when the display on the display is stopped. A return means is provided for returning the display of the display to a normal operation when the user reenters the area.

In the mobile radio terminal according to the sixth invention,
A display for displaying characters or pictograms, a driver for driving the display, a control unit for controlling the operation of the driver, a detection unit for detecting information indicating inside and outside of the call service area, and the detection unit Operating means for intermittently operating the display of at least a part of the display in response to the detection of information outside the call service area by the user, and when the display of the display is stopped, there is a key input or re-enter the call service area In the case of having, a return means for returning the display of the display to a normal operation, the time display frequency of the intermittent operation in the display of the display, the time elapsed from the time of detecting the information outside the call service area, It is designed to be reduced accordingly.

In the mobile radio terminal according to the seventh invention,
A display for displaying characters or pictograms, a driver for driving the display, a control unit for controlling the operation of the driver, a detecting means for detecting the remaining battery power, and a battery remaining below a predetermined value. Operating means for stopping the display of at least a part of the display when the display becomes invalid, and when the display of the display is stopped, if there is an incoming call or a key input, the display of the display is normally displayed. And a return means for returning to the above operation.

In the mobile radio terminal according to the eighth invention,
A display for displaying characters or pictograms, a driver for driving the display, a control unit for controlling the operation of the driver, a detecting means for detecting the remaining battery power, and a battery remaining below a predetermined value. Operating means for intermittently operating at least a part of the display of the display when the display becomes inoperative, and displaying the display when there is an incoming call or key input during the intermittent operation of the display. And a return means for returning to the normal operation.

In the mobile radio terminal according to the ninth aspect,
A display for displaying characters or pictograms, a driver for driving the display, a control unit for controlling the operation of the driver, a detecting means for detecting the remaining battery power, and a battery remaining below a predetermined value. In this case, an operation means is provided for intermittently operating the pictogram "remaining battery level" indicating the remaining battery level of the display in the event of the occurrence.

In the mobile radio terminal according to the tenth aspect, a display for displaying characters or pictograms, a driver for driving the display, a control unit for controlling the operation of the driver, and a state of use are provided. Detecting means for detecting, operating means for stopping the display of the display when it is not in use, and when there is an incoming call or key input when the display of the display is stopped Has a return means for returning the display of the display to a normal operation.

In the mobile radio terminal according to the eleventh aspect, a display for displaying characters or pictograms, a driver for driving the display, a control unit for controlling the operation of the driver, Detecting means for detecting, operating means for intermittently operating the display of the display when it is not in use, and an incoming call or a key input during the intermittent operation of the display In such a case, there is provided a return means for returning the display on the display.

In the mobile radio terminal according to the twelfth aspect, the detection means for detecting the use state utilizes the fact that the received electric field strength fluctuates below a predetermined value during a certain period.

In a mobile radio terminal according to a thirteenth aspect of the present invention, a plurality of base station unique numbers are used as detecting means for detecting a use state, and the fact that the base station unique number does not fluctuate for a predetermined time is used. It is.

[0044] In the operation method of the mobile radio terminal according to the fourteenth aspect, when the mobile radio terminal moves out of the call service area,
The display is set to a power saving state, and the display is returned from the power saving state to a normal state in response to movement into the call service area.

[0045] In the method of operating a mobile radio terminal according to a fifteenth aspect of the present invention, the display is set to a power saving state after a lapse of a predetermined time from the movement outside the call service area, and in response to the movement into the call service area. The display is returned to a normal state from a power saving state.

According to a sixteenth aspect of the present invention, in the operation method of the mobile radio terminal, when a key input is made in the power saving state of the display, the display is returned from the power saving state to the normal state. Features.

In the method for operating a mobile radio terminal according to the seventeenth aspect, when the mobile radio terminal moves out of the call service area,
While the display is in the intermittent operation state, the display is returned from the power saving state to the normal state according to the movement into the call service area, and the time display frequency of the intermittent operation in the display of the display is displayed. Is reduced as time elapses from the point of time of moving out of the call service area.

[0048]

Embodiments of the present invention will be described below.

Embodiment 1 FIG. 1 is a configuration diagram for explaining the operation of the mobile radio telephone terminal according to the first embodiment. In FIG. 1, 1 is a microphone, 2 is an audio circuit,
3 is a modulation / demodulation circuit, 4 is a transmission circuit, 5 is a transmission / reception switching circuit,
6 is an antenna, 7 is a receiving circuit, 8 is a speaker, 9 is a key, 10 is a control unit, 11 is a driver, 12 is a display, 2
1 is a call service area detection circuit.

The signal flow in the figure is as follows.
The electric signal obtained by converting the input sound by the microphone 1 is amplified by the audio circuit 2 and modulated by the modulation / demodulation circuit 3. This is converted and amplified to a high frequency by the transmission circuit 4 and radiated into the air from the antenna 6 via the transmission / reception switching circuit 5. On the other hand, the high frequency received by the antenna 6 is amplified and frequency-converted by the receiving circuit 7 via the transmission / reception switching circuit 5, and the modulation / demodulation circuit 3
, And is amplified by the audio circuit 2 to generate sound at the speaker 8.

The operation of the terminal is performed by the key 9, whereby the control unit 10 controls each circuit to perform a predetermined operation. The result of the key operation can be confirmed on the display 12 by the driver 11 controlling the display operation of the display 12 via the control unit 10.

FIG. 2 shows a power supply system of the mobile radio telephone terminal. In FIG. 2, 13 is a battery, 14 is a control unit power supply, 1
5 is a transmission / reception switching power supply, 16 is a transmission circuit power supply, 17 is a reception circuit power supply, 18 is a modulation / demodulation circuit power supply, 19 is an audio circuit power supply, and 20 is a display / driver power supply.

The battery 13 supplies DC power to the control unit power supply 14, transmission / reception switching power supply 15, transmission circuit power supply 16, reception circuit power supply 17, modulation / demodulation circuit power supply 18, audio circuit power supply 19, display unit, and driver power supply 20. . Control unit power supply 14
The other power supply circuits operate according to control signals from the control unit 10.

The display 12 also displays the operation status of the terminal. For example, FIG. 3 shows a display example. In the figure, three pictographs and two 10-digit numbers are shown. The pictograph located on the left of the three pictographs indicates "antenna mark and electric field strength", and indicates the magnitude of the received electric field strength by the number of vertical bars (antenna bars). 4 stages from weakest to strongest, "no antenna bar", "one antenna bar", "antenna bar 2"
Book "and" three antenna bars ". “Public” indicates that when the terminal is in the call service area, the location can be registered by communication with the base station and the terminal can be received. The emoticon at the far right of the emoji is "Battery level"
The number of vertical bars (battery bars) indicates the amount of remaining battery capacity. The state from the low battery level to the large battery level is represented by four stages, “no battery bar”, “one battery bar”, “two battery bars”, and “three battery bars”.

In the call service area, when the terminal operates the key 9 and turns on the power, the power is supplied from the battery 13 to the control unit power supply 14 and the control unit 10 operates. The control unit 10 controls the transmission / reception switching power supply 15, the transmission circuit power supply 16, the reception circuit power supply 17, the modulation / demodulation circuit power supply 18, the audio circuit power supply 19, the display / driver power supply 20, and the transmission / reception switching circuit 5, the transmission circuit 4, Power is supplied to the receiving circuit 7, the modulation / demodulation circuit 3, the audio circuit 2, the display 12, and the driver 11.

Each circuit enters a standby state, and under the control of the control unit 10, the terminal performs a sequence operation for location registration with a nearby base station. The call service area detection circuit 21 confirms that a control channel with the base station has been established as an “area signal”. When the “area signal” indicates a state within the call service area, the control unit 10 controls the driver 11 to display “public” on the display 12. Thereafter, the display 12 displays “public” and further displays a pictogram “antenna mark and electric field intensity” representing the electric field intensity according to the electric field intensity.

The location registration procedure is performed in accordance with a standard established as a technical standard for mobile phones and simplified mobile phones. The call service area detection circuit 21 is shown for the sake of explanation, and is actually a part of software for controlling the mobile radio telephone terminal. When "public" is displayed, the terminal can make and receive calls. Therefore,
All states are continuously displayed on the display for convenient use.

On the other hand, outside the call service area, the control channel is not established and the "area signal"
Does not indicate that you are in a call service area,
"Public" is not displayed. Further, in this state, outgoing / incoming calls cannot be made. Therefore, the display unit displays only the pictogram "remaining battery level" or displays "Kengai" to indicate that the user is out of the service area.

When the user of the terminal is out of the call service area for a long time, the terminal cannot actually make a call, so that the display on the display unit 12 becomes unnecessary. For this reason, outside the call service area, even if the display of the display unit 12 is partially or completely stopped or the operation is intermittently performed, there is no major problem in usability.

The signal is set to “ON” inside the call service area and “OFF” outside the call service area. This is set as an “area signal”. Can be controlled.

That is, "OFF" is detected as an "area signal" outside the call service area, and when a certain period of time has elapsed since the detection, a part or all of the display is stopped, or The intermittent operation of at least a part of the display is started, and a power saving state is set.

Then, the following display operation can be performed. For example, when performing the intermittent operation, if the period is P and the length of the display time is T, the display time frequency: duty is represented by T / P × 100 (%). This duty is normally set to 100% when the “area signal” is “ON” (inside the call service area), and when the “area signal” is “OFF” (outside the call service area),
By setting the value close to 100% until the predetermined time elapses and decreasing the value with the elapsed time, it becomes possible to cope with a change in the situation near the call service area without impairing usability. This is performed because the state of the "area signal" may become unstable at the end of the call service area. However, even if the user is outside the call service area, the remaining battery level may be checked, so if there is a key input, the display is re-displayed.

Next, when the mobile terminal again moves into the communication service area, the communication service area detection circuit 21 establishes a control channel, and the "area signal" indicates "ON" indicating that the communication signal is within the communication service area. ", So that" public "is displayed again. At this time, a standby state accompanied by a normal display operation is set.

According to this embodiment, it is possible to reduce the standby current after a predetermined time outside the call service area, and to increase the standby time. There is an effect that can be done.

Embodiment 2 FIG. 4 is a configuration diagram for explaining the operation of the mobile radio telephone terminal according to the second embodiment. In FIG. 4, 1 is a microphone, 2 is an audio circuit,
3 is a modulation / demodulation circuit, 4 is a transmission circuit 4, 5 is a transmission / reception switching circuit, 6 is an antenna, 7 is a reception circuit, 8 is a speaker, 9 is a key, 10 is a control unit, 11 is a driver, 12 is a display,
Reference numeral 22 denotes a battery voltage / battery level detection circuit.

The battery voltage / remaining battery level detection circuit 22 detects the battery voltage and calculates the remaining battery level, and sends a remaining battery level signal to the control unit 10. Others are the same as FIG. The power supply system is the same as in FIG.

The voltage drop characteristic of the battery 13 generally indicates a characteristic in which the voltage decreases as the battery is discharged, that is, a characteristic in which the output voltage monotonously decreases with the lapse of time, and the characteristics specific to the battery type must be grasped in advance. Thus, the remaining battery level can be predicted. However, the voltage drop characteristics of the battery differ depending on the type of battery.

FIG. 5 shows an example of the voltage drop characteristics of the battery. In the figure, the horizontal axis represents the elapsed time, and the vertical axis represents the output voltage of the battery when the current consumption of the load is constant. For the sake of simplicity, it is shown by a straight line, but a curved line shows a similar tendency.

A fully charged battery 13 is used, and its voltage drop characteristic is the characteristic shown in FIG. 5 under the condition that the current consumption of the load is constant. Initial voltages V ₁ in use start time t _1, the battery 13
When used continuously throughout until the voltage V ₂ is the use limit of the use time t _2. However, the minimum voltage that can be used in the mobile radiotelephone terminal and V _3. In this case, the time available until the voltage V _3, which is t _3.

From this, it is possible to predict the remaining battery level by monitoring the voltage V ₄ . Now, when a voltage at a time t ₄ and V _4, the voltage drop characteristic is a straight line, the battery remaining time can be calculated in the following. Usage time t ₄ −t ₁ (1) Remaining usable time t ₃ −t ₄ (2) t ₄ = t ₁ + (t ₃ −t ₁ ) × (V ₁ −V ₄ ) / (V ₁ −V ₃ ) (3) If t ₁ = 0, the remaining usable time is expressed by the following equation. t ₃ −t ₄ = t ₃ −t ₃ × (V ₁ −V ₄ ) / (V ₁ −V ₃ ) = t ₃ × (V ₄ −V ₃ ) / (V ₁ −V ₃ ) (4) Here And the remaining usable time t ₃ −t ₄ is used as the usable time ratio R
R = (t ₃ −t ₄ ) / t ₃ × 100 (%) (5)

The remaining available time t is used as the remaining battery signal.
This is sent to the control unit 10 using _3- t ₄ or the available time ratio R. In the control unit 10, for example, R
Becomes 50%, in order to stop a part or all of the operation of the display 12 or to make it operate intermittently,
A control signal can be sent to the driver 11. However, even if the remaining battery level is low, the display is meaningful as confirmation of the remaining battery level. Therefore, when the key 9 is operated, the display is performed again. If there is an incoming call, it is displayed again.

Note that, depending on the terminal, the display contents may be different from those shown in FIG.
Some of them have a time display function in addition to the contents of the above.
In this case, the entire display may be intermittently operated, or only the pictogram “battery remaining amount” indicating the remaining battery level may be intermittently operated as a part of the display.

According to this embodiment, it is possible to reduce the standby current when the remaining battery power is lower than the predetermined value. And according to this embodiment,
Either canceling part or all of the display or operating it intermittently, etc., the effect that the battery level is low is better than the indication of the number of battery bars in the pictogram "Battery level", There is an effect that strongly feels the need.

Embodiment 3 FIG. 6 is a configuration diagram for explaining the operation of the mobile radio telephone terminal according to the third embodiment. In FIG. 6, 1 is a microphone, 2 is an audio circuit,
3 is a modulation / demodulation circuit, 4 is a transmission circuit 4, 5 is a transmission / reception switching circuit, 6 is an antenna, 7 is a reception circuit, 8 is a speaker, 9 is a key, 10 is a control unit, 11 is a driver, 12 is a display,
23 is a use state detection circuit.

The signal flow shown in FIG.
3 detects a use state and generates a use state signal. Others are the same as FIG. The power supply system is the same as in FIG.

Here, using the change in the received electric field strength,
A method for detecting the unused state will be described.
In a mobile radiotelephone terminal, the received electric field intensity changes relatively largely during moving or talking. On the other hand, when the mobile radiotelephone terminal is stationary at one place, the received electric field strength is relatively small unless the surrounding environment changes largely. The use state signal is, for example, an average change rate of the electric field intensity within a predetermined time when the electric field intensity is continuously monitored. This is sent from the use state detection circuit 23 to the control unit 10. When the use state signal is equal to or less than a predetermined value, the control unit 10 determines that the display unit 12 is not in use, and stops the display of part or all of the display unit 12 or performs an intermittent operation. Can send a control signal to the driver 11. However, even when the terminal is not in use, when there is an incoming call or an operation of the key 9, the display is performed again.

According to this embodiment, for example, when no key input is performed, but it is desired to continuously display on the display while moving, for example, as described above, the standby mode is used when the timer function is used. This is advantageous in that the standby current can be reduced while the usability is maintained.

Further, other methods can be considered to detect the use state. The terminal has one base station for location registration, but can usually receive radio waves from multiple base stations,
A plurality of base station unique numbers can be obtained. Some of these have a small electric field strength near the reception sensitivity limit of the terminal. Therefore, by monitoring the radio wave with this small electric field strength, it is possible to receive the radio wave of this base station unique number, You can see that it can no longer be done. The fact that the base station unique number can be stably received for a predetermined time means that the base station unique number monitoring method is considered to be determined to be stationary and not used.

As the use state signal, for example, a radio wave of a base station which can receive the received electric field strength below a predetermined value is used.
By continuously monitoring this base station unique number,
This base station unique number is transmitted from the use state detection circuit 23 to the control unit 10. When the base station can stably receive the signal within a predetermined time, the control unit 10 determines that the terminal is not in use and stops displaying part or all of the display unit 12, or , For intermittent operation,
The control unit 10 can send a control signal to the driver 11. However, even when the terminal is not in use, when there is an incoming call or an operation of the key 9, the display is performed again.

According to this embodiment, as described above, for example, when there is no key input, but it is desired to continuously display on a display while moving by train or car, for example, as described above, This is convenient in the case of standby when the timer function is used, and has the effect that the standby current can be reduced.

As described above, according to the embodiment of the present invention, when the vehicle goes out of the call service area, the display of a part or all of the display is stopped or the display is intermittently operated. Can be achieved. In addition, when the remaining battery power is less than or equal to a predetermined value, for part or all of the display, the display is stopped or intermittent operation is performed.
The standby time can be extended. In addition, the usage state is monitored, and if it is determined that the display is not being used, the display of some or all of the display is stopped or intermittently operated, so that the standby time can be extended. . Since the method depends on various use situations, there is an effect that the standby time can be extended without deteriorating usability. In this way, the effect of extending the standby time and
If the standby time is the same, the battery capacity can be reduced, which is effective in reducing the size and cost.

[0082]

According to the first aspect of the present invention, it is possible to provide a mobile radio terminal capable of realizing power saving during standby by setting a display in a power saving state in response to detection of information outside a call service area. it can.

According to the second aspect of the present invention, it is possible to provide a mobile radio terminal capable of realizing power saving during standby by setting the display to a power saving state after a lapse of a predetermined time from the detection of information outside the call service area. it can.

According to the third invention, the display is set to the power saving state in response to the detection of the information outside the call service area, and the display is returned from the power saving state to the normal state by a key input, and is in a standby state. In addition to saving power, it is possible to provide a mobile wireless terminal capable of realizing secure display during key operation.

According to the fourth aspect of the present invention, there is provided a mobile radio terminal capable of realizing power saving during standby by stopping display of at least a part of a display after a predetermined time has elapsed from detection of information outside a call service area. Can be provided.

According to the fifth aspect of the present invention, at least a part of the display is intermittently operated after a predetermined time has elapsed from the detection of the information outside the call service area, so that the mobile radio terminal capable of realizing power saving during standby can be realized. Can be provided.

According to the sixth invention, at least a part of the display is intermittently operated after a predetermined time has elapsed from the detection of the information outside the call service area, and the time display frequency of the intermittent operation in the display of the display is displayed. Is reduced as time elapses from the detection of the out-of-call service area information, whereby a mobile wireless terminal capable of realizing power saving during standby can be provided.

According to the seventh aspect of the present invention, there is provided a mobile radio terminal capable of realizing power saving during standby by stopping display of at least a part of the display when the remaining battery power falls below a predetermined value. Can be provided.

[0089] According to the eighth invention, when the remaining battery power becomes equal to or less than the predetermined value, at least a part of the display is intermittently operated, thereby realizing a power saving during standby. Can be provided.

According to the ninth aspect of the present invention, when the remaining battery power becomes equal to or less than the predetermined value, the pictograph “battery remaining power” indicating the remaining battery power of the display is intermittently operated, thereby saving power during standby. A mobile wireless terminal that can be realized can be provided.

According to the tenth aspect of the present invention, there is provided a mobile radio terminal capable of realizing power saving during standby by stopping display of at least a part of the display when it is not in use. be able to.

According to the eleventh aspect, there is provided a mobile radio terminal capable of realizing power saving during standby by intermittently operating display of at least a part of a display when not in use. can do.

According to the twelfth aspect, a state in which the mobile terminal is not in use is detected by using the fact that the received electric field strength is fluctuating below a predetermined value while the received electric field strength is constant, and power saving during standby can be realized. Wireless terminal can be provided.

According to the thirteenth aspect, there is provided a mobile radio terminal capable of detecting an unused state using the fact that the base station unique number does not fluctuate for a certain period of time and realizing power saving during standby. Can be provided.

According to the fourteenth aspect, there is provided an operation method of a mobile radio terminal capable of realizing power saving during standby by setting a display to a power saving state in response to movement outside a call service area. Can be.

[0096] According to the fifteenth aspect, the operation method of the mobile radio terminal capable of realizing power saving during standby by setting the display to the power saving state after a predetermined time has elapsed from the movement outside the call service area. Can be provided.

According to the sixteenth aspect, the display is set to the power saving state after a lapse of a predetermined time from the movement to the outside of the call service area, and the display is returned from the power saving state to the normal state by key input, and the standby state is established. It is possible to provide an operation method of a mobile wireless terminal capable of realizing power saving during reception and realizing secure display at the time of key input.

According to the seventeenth aspect, at least a part of the display is intermittently operated after a lapse of a predetermined time from the movement to the outside of the call service area, and the time display frequency of the intermittent operation in the display of the display is displayed. Is reduced as time elapses from the point of time when the mobile radio terminal moves out of the call service area, whereby it is possible to provide a method of operating a mobile wireless terminal capable of realizing power saving during standby.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a mobile radio telephone terminal for describing Embodiment 1 of the present invention.

FIG. 2 is a configuration diagram for explaining a power supply system of the mobile radio telephone terminal.

FIG. 3 is a diagram showing display contents of a display device of the mobile radiotelephone terminal.

FIG. 4 is a configuration diagram of a mobile radio telephone terminal for describing Embodiment 2 of the present invention.

FIG. 5 is a diagram showing voltage drop characteristics of a secondary battery.

FIG. 6 is a configuration diagram of a mobile radio telephone terminal for describing Embodiment 3 of the present invention.

[Explanation of symbols]

1 microphone, 2 audio circuit, 3 modem circuit, 4
Transmission circuit, 5 transmission / reception switching circuit, 6 antenna, 7
Receiver circuit, 8 speakers, 9 keys, 10 control unit, 1
1 driver, 12 display, 13 battery, 14 control unit power supply, 15 transmission / reception switching power supply, 16 transmission circuit power supply, 17
Receive circuit power supply, 18 modulation / demodulation circuit power supply, 19 audio circuit power supply, 20 display / driver power supply.

Claims (17)

[Claims] 1. A display for displaying predetermined information, a driver for driving the display, a control unit for controlling the operation of the driver, and a detecting means for detecting information indicating inside and outside of a call service area. The display device is set to a power saving state in response to the detection of the information outside the call service area by the detection means, and the display device is returned from the power saving state to a normal state in response to the detection of the information in the call service area. A mobile wireless terminal characterized in that: 2. A display for displaying predetermined information, a driver for driving the display, a control unit for controlling the operation of the driver, and a detecting means for detecting information indicating inside and outside of the call service area. The display unit is set to a power saving state after a predetermined time has elapsed from the detection of the information outside the call service area by the detection means, and the display unit is returned from the power saving state to a normal state in response to the detection of the information within the call service area. A mobile wireless terminal characterized in that: 3. The display device according to claim 1, wherein when a key input is made in the power saving state of the display, the display is returned from the power saving state to a normal state. Mobile wireless terminal. 4. A display for displaying characters or pictograms, a driver for driving the display, a control unit for controlling the operation of the driver, and a detecting means for detecting information indicating inside and outside of a call service area. Operating means for detecting information outside the call service area and stopping display of at least a part of the display after a predetermined time has elapsed; and And a return means for returning the display of the display unit to a normal operation when the mobile terminal reenters the call service area. 5. A display for displaying characters or pictograms, a driver for driving the display, a control unit for controlling the operation of the driver, and a detecting means for detecting information indicating inside and outside of a call service area. Operating means for detecting information outside the call service area and intermittently operating at least a part of the display after a predetermined time has elapsed, and key input when the display of the display is intermittently operated. Or a return means for returning the display of the display unit to a normal operation when there is a communication service area. 6. A display for displaying characters or pictograms, a driver for driving the display, a control unit for controlling the operation of the driver, and a detecting means for detecting information indicating inside and outside of a call service area. And operating means for intermittently operating at least a part of the display on the display in response to the detection of the information outside the call service area by the detecting means,
When the display on the display is intermittently operated, if there is a key input or the telephone service area is re-entered, the display unit is provided with a return unit for returning the display to a normal operation. A mobile wireless terminal configured to reduce an operation time display frequency as time elapses from detection of out-of-call service area information. 7. A display for displaying characters or pictograms, a driver for driving the display, a control unit for controlling the operation of the driver, a detecting means for detecting the remaining battery power, Operating means for stopping the display of at least a part of the display when the value becomes equal to or less than a predetermined value, and displaying the display when there is an incoming call or key input when the display of the display is stopped. A mobile radio terminal comprising: a return unit that returns a display of the display to a normal operation. 8. A display for displaying characters or pictograms, a driver for driving the display, a control unit for controlling the operation of the driver, a detecting means for detecting the remaining battery power, Operating means for intermittently operating at least a part of the display when the value becomes equal to or less than a predetermined value, and when there is an incoming call or key input during the intermittent operation of the display And a return unit for returning the display of the display to a normal operation. 9. A display for displaying characters or pictograms, a driver for driving the display, a control unit for controlling the operation of the driver, a detecting means for detecting the remaining battery power, A mobile radio terminal comprising an operating means for intermittently operating a pictogram "remaining battery level" indicating the remaining battery level of the display when the value of the remaining battery level becomes equal to or less than a predetermined value. 10. A display for displaying characters or pictograms, a driver for driving the display, a control unit for controlling the operation of the driver, a detecting means for detecting a use state, and not being used. An operating means for stopping the display of the display when the state is reached, and, when there is an incoming call or a key input when the display of the display is stopped, the display of the display is changed to a normal operation. A mobile wireless terminal, comprising: a return unit that returns to the mobile terminal. 11. A display for displaying characters or pictograms, a driver for driving the display, a control unit for controlling the operation of the driver, a detecting means for detecting a use state, and no use. In the case of a state, the operation means for intermittently operating the display of the display, and during the intermittent operation of the display, if there is an incoming call or if there is a key input,
A mobile wireless terminal comprising: a return unit that recovers a display on a display. 12. The mobile radio terminal according to claim 10, wherein the detection means for detecting the use state utilizes that the received electric field intensity fluctuates below a predetermined value during a certain period. 13. The mobile device according to claim 10, wherein a plurality of base station unique numbers are used as the detecting means for detecting the use state, and the fact that the base station unique number does not fluctuate for a predetermined time is used. For wireless terminals. 14. The display device is set to a power saving state in response to movement out of the call service area, and is returned from the power saving state to a normal state in response to movement into the call service area. A method for operating a mobile wireless terminal, comprising: 15. After a lapse of a predetermined time after moving out of the call service area, the display is put into a power saving state, and the display is returned from the power saving state to a normal state according to the movement into the call service area. An operation method of a mobile wireless terminal characterized by the above. 16. The display device according to claim 14, wherein, when a key input is made in the power saving state of the display, the display is returned from the power saving state to a normal state. The operation method of the mobile wireless terminal. 17. An intermittent operation state of the display in response to movement out of the call service area, and a return of the display from the intermittent operation state to a normal state in response to movement into the call service area. And a method for operating the mobile radio terminal, wherein the time display frequency of the intermittent operation in the display of the display unit is reduced in accordance with the lapse of time from the time of moving out of the call service area. .