JP2000253142A - Communication terminal equipment and power consumption reduction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extend a speech time or a waiting time by reducing power consumption by stopping the operation of an additional function, when a remaining amount of a battery is small. SOLUTION: Remaining amount of a battery is detected by a remaining amount of battery detecting part 13, and the detected residual amount is compared with a threshold value by a control part 5, and when it is judged that the residual amount is small, power consumption is reduced by stopping the function of an incoming call LED 7, an incoming sound control part 8, and a display part 10 which is an additional function. Thus, speech time or waiting time can be extended.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication terminal device for reducing power consumption by limiting functions according to a remaining battery level and extending a talk time.

[0002]

2. Description of the Related Art Conventionally, in a communication terminal device such as a mobile phone, for example, a receiving operation for receiving an incoming call signal for starting a telephone call has been performed for the purpose of reducing the average power and extending the use time. Intermittent reception control has been devised to reduce the power consumption by providing a period in which the reception operation is not performed intermittently.

Also, Japanese Patent No. 2588640 discloses a mobile communication system in which, when the remaining battery power is low, transmission is performed only while the transmission switch is pressed, and when the transmission switch is not pressed, transmission is not performed and power consumption is reduced. Has been proposed.

[0004] Therefore, the power consumption can be reduced by performing the intermittent operation of the reception process or the transmission operation only at the time of transmission that needs to be transmitted, and transmission or reception is performed by the reduced power consumption. The call time, which is the operation time of the call function, can be extended.

[0005]

However, if the user can talk for a longer time than the conventional communication terminal device, the frequency of battery replacement or charging of the communication terminal device can be reduced, so that the power consumption per unit time is further reduced. It is desired to reduce it.

[0006] In addition to the call function, the communication terminal device often includes, as an additional function, an information notification function of notifying the user of the elapsed call time or notifying the incoming call.
For a user who wants a longer call time, there is a case where a user wants to give a higher priority to the call function than to the information notification function and stop the information notification function to increase the call time.

[0007] In addition, depending on the user, when the remaining battery level is large, use as many information notification functions as possible, and when the remaining battery level is not low, charging or replacement of the battery cannot be performed immediately. In some cases, it may be desired to stop the information notification function until the battery is replaced or the battery is replaced, thereby extending the talk time.

[0008] Further, it is also desired to lengthen the talk time for a particular party. For example, to a party who wants to avoid a disconnection due to a failure to secure a sufficient battery level during a call, It is desired to reduce the power consumption other than the call and extend the call time so that the call is hardly interrupted.

The present invention solves the above-mentioned conventional problem, and extends the talk time by restricting operations other than the talk function represented by the information notification function according to the remaining battery power to reduce power consumption. It is an object of the present invention to provide an excellent communication terminal device capable of performing such operations.

[0010]

In order to solve the above problems, the present invention has the following arrangement.

The communication terminal device of the present invention includes a battery remaining amount detecting means for detecting and outputting the remaining battery amount, and a function added to the device according to the battery remaining amount output from the remaining amount detecting means. An additional function control unit that performs control for restricting the operation of the additional function, which is at least one function that does not end the call even if the operation is restricted.

Further, the communication terminal device of the present invention includes a call state detecting means for detecting a call state or a non-call state, and the additional function control means detects the call state by the call state detecting means. Only in this case, the operation of the additional function is limited according to the remaining battery level output from the remaining battery level detecting means.

Further, the communication terminal device of the present invention includes a call state detecting means for detecting a call state or a non-call state, and the additional function control means detects the call state by the call state detecting means. In the case, the operation of the additional function is limited according to the remaining battery level output from the remaining amount detection means, and after the operation of the additional function is restricted, the state is detected regardless of the state detected by the call state detection means. The operation of the additional function is continuously restricted according to the remaining battery level.

Further, the communication terminal device of the present invention comprises a communication destination detecting means for detecting a communication destination of the device, and the additional function control means detects the presence of the battery when the communication destination detecting means detects the predetermined communication destination. The operation of the additional function is restricted according to the remaining amount.

Further, the communication terminal device of the present invention includes a power saving control selecting means for selecting execution or stop of the operation of the additional function controlling means, and the additional function controlling means selects the execution by the power saving control selecting means. When the power saving control selecting means is set to stop, the operation is stopped.

Further, the communication terminal device according to the present invention includes power saving control selecting means for selecting execution or stop of the operation of the additional function controlling means, and the additional function controlling means selects execution by the power saving control selecting means. When the call is detected or when the callee detection means detects a predetermined callee, the operation is executed, the power saving control selection means is set to stop and the callee detection means is not the predetermined callee. Stops operation when it is detected.

Further, in the communication terminal device according to the present invention, the battery remaining amount detecting means detects the battery remaining amount using at least one of a discharge current integrated value which is an integrated value of the discharge current and an output voltage value. .

Further, the communication terminal device of the present invention includes a battery unit which is detachable from the communication terminal device and includes the battery remaining amount detecting means.

In the communication terminal device according to the present invention, a battery type notifying unit for notifying a battery type indicating whether or not the battery unit uses the integrated discharge current value for detecting the remaining battery level. Prepare.

Further, in the communication terminal device of the present invention, the battery type notifying means notifies the battery type by the shape of the battery unit or a notification signal.

Further, in the communication terminal device according to the present invention, the additional function control means may have a display function of displaying a symbol or a graphic, and a backlight function of brightening the display function or an input switch as an input means using a light source. An incoming call notification function of notifying an incoming call, a digitizing processing function of converting a transmission analog signal, which is an input signal including voice, to a transmission digital signal, and an encoding processing function of converting the transmission digital signal to a transmission encoded signal. A modulation processing function of modulating the transmission coded signal into a transmission signal, a demodulation processing function of demodulating a reception signal into a reception coded signal, and a decoding processing function of decoding the reception coded signal into a reception digital signal And an analog processing function for converting the received digital signal into a received analog signal.

Further, the communication terminal device of the present invention includes transmission data storage means for storing transmission data which is a transmission digital signal or a transmission coded signal in advance, wherein the additional function control means determines that the transmission data is a transmission digital signal. When there is a digitizing processing function as an additional function, and when the transmission data is a transmission encoded signal, the digitizing processing function and the encoding processing function are added functions to the remaining battery level output from the remaining amount detecting means. Accordingly, the operation of the additional function is restricted, and the transmission data stored in the transmission data storage unit is converted into a transmission signal by a modulation processing function or an encoding processing function and a modulation processing function and transmitted.

Also, the communication terminal device of the present invention includes reception data storage means for storing reception data which is a reception digital signal or reception coded signal, and the additional function control means controls whether the reception data is a reception coded signal. The battery remaining amount output from the remaining amount detecting unit as an additional function when the decoding processing function and the analog processing function are added functions when the received data is a received digital signal. The operation of the additional function is restricted in accordance with the received data, and a received encoded signal or a received digitized signal is stored in the received data storage means.

The power consumption reducing method according to the present invention operates in a battery remaining amount detecting means for detecting a battery remaining amount, and when the battery remaining amount is smaller than a predetermined value, the function added to the communication terminal device. , The operation of at least one additional function that does not end the call even if the function is restricted is restricted to reduce power consumption.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, there is provided a battery remaining amount detecting means for detecting and outputting a battery remaining amount,
Addition for performing control to limit the operation of at least one additional function that does not terminate the call even if the operation is restricted among the functions added to the device according to the remaining battery level output from the remaining battery level detection means. A communication terminal device comprising a function control unit, wherein the additional function control unit stops the power supply or sets a setting to suppress power consumption in order to stop all or part of the operation of the additional function. By performing control that is executed when the remaining battery level detected by the remaining battery level detecting means is smaller than a predetermined threshold value, a call can be made and the power consumption of the additional function can be reduced entirely or partially.

According to a second aspect of the present invention, there is provided a call state detecting means for detecting a call state or a non-call state, and the additional function control means is in a call state by the call state detecting means. 2. The communication terminal device according to claim 1, wherein the operation of the additional function is limited according to the remaining battery amount output from the remaining amount detection unit only when the communication terminal device detects the communication. Only when the call state is detected by the call state detection means, by performing control to be executed when the power consumption of the additional function is smaller than a predetermined threshold value according to the remaining battery level, during a call, The power consumption of the additional function can be reduced, and the additional function can be used when the user is not talking.

According to a third aspect of the present invention, there is provided a call state detecting means for detecting a call state or a non-call state, and the additional function control means is in a call state by the call state detecting means. The operation of the additional function is limited according to the remaining battery level output from the remaining amount detection means when the remaining amount detection means is detected, and after the operation of the additional function is restricted, the state is detected by the call state detection means. The communication terminal device according to claim 1, wherein the operation of the additional function is continuously restricted in accordance with the remaining amount of the battery. When the power consumption of the additional function is detected and the power consumption of the additional function is smaller than the predetermined threshold value according to the remaining battery level, the power consumption of the additional function is reduced, so that the additional function can be used while the call is not being used For control means And after from the time when the additional function is not not be able to use, remaining battery power becomes low during a call Ri,
The operation of the additional function is limited only after the first call after the remaining battery power is low to reduce power consumption.

According to a fourth aspect of the present invention, there is provided a communication destination detecting means for detecting a communication destination of the apparatus, wherein the additional function control means detects when a predetermined communication destination is detected by the communication destination detecting means. 2. The communication terminal device according to claim 1, wherein the operation of the additional function is restricted according to the remaining battery level, and a call code for specifying a call destination at the time of calling or a call code for notifying at the time of receiving a call and specifying the call destination. For a specific call destination detected by the code, the power consumption of the additional function is reduced according to the remaining battery level during the call.

According to a fifth aspect of the present invention, there is provided a power saving control selecting means for selecting execution or stop of the operation of the additional function controlling means, wherein the additional function controlling means is a power saving control selecting means. 5. The communication terminal device according to claim 1, wherein when the execution is selected, the operation is performed, and when the stop is set by the power saving control selection means, the operation is stopped. In response to a request from the user, the additional function can be used when necessary, and when not necessary, the power consumption of the additional function is reduced according to the remaining battery power.

According to a sixth aspect of the present invention, there is provided a power saving control selecting means for selecting execution or stop of the operation of the additional function controlling means, wherein the additional function controlling means is a power saving control selecting means. The operation is executed when execution is selected or when a call is detected as a predetermined call destination by the call destination detection means, a stop is set by the power saving control selection means, and a predetermined operation is performed by the call destination detection means. The communication terminal device according to claim 4, wherein the operation is stopped when it is detected that the terminal is not the call destination, and execution or stop of a process of restricting operation of an additional function according to a remaining battery level can be designated by a user request. But,
However, when talking with a specific destination, the power consumption of the additional function is reduced when the remaining battery level is low even if the user has selected to use the additional function.

According to a seventh aspect of the present invention, the battery remaining amount detecting means uses at least one of an integrated discharge current value, which is an integrated value of the discharge current, and an output voltage value. The communication terminal device according to any one of claims 1 to 6, wherein a remaining battery level is detected as a result of measuring a discharge current integrated value or an output voltage value, and an additional function is provided based on the detected remaining battery level. Restrict operations.

The invention according to claim 8 of the present invention is the communication apparatus according to any one of claims 1 to 7, further comprising a battery unit detachable from the communication terminal device and including the battery remaining amount detecting means. A terminal device, which facilitates charging or replacement of a battery by attaching or detaching a battery unit.Also, when the remaining battery capacity of the battery unit attached to the communication terminal device changes due to charging or replacement of the battery, the battery unit is replaced. The power consumption of the additional function is reduced by the additional function control means according to the remaining battery power.

According to a ninth aspect of the present invention, there is provided a battery for notifying a battery type indicating whether or not the battery section uses the integrated discharge current value for detecting the remaining battery level. 9. The communication terminal device according to claim 8, further comprising a type notification unit, wherein when the discharge current integrated value is used for detecting the remaining battery level, the additional function control unit sets a threshold value for comparing with the remaining battery level with the discharge current. When the detection of the remaining battery level is other than the discharge current integrated value, for example, when the detection of the remaining battery level is an output voltage value, the threshold value to be compared with the remaining battery level is a value corresponding to the output voltage value. And the power consumption of the additional function is reduced by the additional function control means according to the remaining battery level according to the function of the battery unit.

According to a tenth aspect of the present invention, in the communication terminal apparatus according to the ninth aspect, the battery type notifying means notifies the battery type by a shape of the battery unit or a notification signal. Yes, the battery type of the battery unit can be notified by a difference in shape of a combination of recesses, protrusions, or irregularities provided in the battery unit, or a difference in a notification signal to be transmitted, and the additional function control according to the battery type. Means to reduce the power consumption of additional functions.

According to an eleventh aspect of the present invention, the additional function control means includes a display function for displaying a symbol or a graphic, and a backlight for brightening the display function or an input switch as an input means using a light source. A write function, an incoming call notification function for notifying an incoming call, a digitizing processing function for converting a transmission analog signal, which is an input signal including voice, into a transmission digital signal, and encoding for converting the transmission digital signal into a transmission encoded signal. A processing function; a modulation processing function of modulating the transmission coded signal into a transmission signal; a demodulation processing function of demodulating a reception signal into a reception coded signal; and a decoding processing of decoding the reception coded signal into a reception digital signal. Operation is limited to at least one of an analog processing function and an analog processing function of converting the received digital signal into a received analog signal. The communication terminal device according to claim 1, wherein the additional function control unit has a display function, a backlight function, and an incoming notification function of notifying an incoming call by sound, light, or vibration according to a remaining battery level. In addition, the power consumption is reduced by limiting at least one of the operations of the digitization processing function, the encoding processing function, the modulation processing function, the demodulation processing function, the decoding processing function, and the analog processing function.

According to a twelfth aspect of the present invention, there is provided transmission data storage means for storing transmission data, which is a transmission digital signal or a transmission coded signal, in advance, and the additional function control means determines whether the transmission data is transmitted. The battery output from the remaining amount detection unit as a digital signal when the transmission data is a transmission coded signal and a digitization processing function and an encoding function when the transmission data is a transmission coded signal. 2. The method according to claim 1, wherein the operation of the additional function is restricted according to a remaining amount, and the transmission data stored in the transmission data storage unit is converted into a transmission signal by a modulation processing function or an encoding processing function and a modulation processing function and transmitted. 11. The communication terminal device according to any one of claims 10 to 10, wherein when the remaining battery power is low, a transmission analog signal including an amplifier and a filter is converted into a transmission digital signal. Restrict the operation of the digitization processing function, or the digitization processing function and the encoding processing function, which is the conversion processing, and use the transmission data stored in advance as a transmission digital signal or transmission encoding signal to perform encoding processing and modulation processing. By transmitting and transmitting as a transmission signal,
Power consumption is reduced by not converting an input analog signal into a transmission signal, and predetermined transmission data is transmitted as a transmission signal to a call destination.

According to a thirteenth aspect of the present invention, there is provided a reception data storage means for storing reception data which is a reception digital signal or a reception coded signal, wherein the additional function control means determines that the reception data is a reception code. When the received data is a received digital signal, the analog processing function is added as an additional function, and the decoding processing function and the analog processing function are added functions. 11. The communication terminal device according to claim 1, wherein the operation of the additional function is restricted according to a remaining battery level, and a received encoded signal or a received digitized signal is stored in the received data storage unit. When the amount is small, restrict the operation of the process of converting the received coded signal or the received digital signal to a received analog signal including an amplifier and a filter, By storing the received encoded signal or the received digital signal that has also been subjected to decoding processing in the received data storage means, the received signal is not converted to a received analog signal, thereby reducing power consumption. By storing a signal or a received digital signal as received data, the stored received data is decoded and analogized after the battery capacity is increased or when power is not required for transmission after ending a call. Can be played.

According to a fourteenth aspect of the present invention, there is provided a battery remaining amount detecting means for detecting a battery remaining amount, and a function added to the communication terminal device when the battery remaining amount is smaller than a predetermined value. This is a power consumption reduction method that reduces the power consumption by restricting the operation of an additional function that is at least one function that does not terminate the call even if the operation is restricted. By limiting the operation of the additional function of the communication terminal device when the detected remaining battery level is smaller than the threshold value, the power consumption of the additional function is reduced when the remaining battery level is low, and the reduced addition It is possible to use the power consumption of the function in a call.

An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a block diagram showing a configuration of a portable wireless terminal device according to the first embodiment of the present invention, and FIG. 2 is a block diagram showing a configuration of a battery unit having discharge current integrating means according to the first embodiment of the present invention. FIG. 3 is a block diagram showing a configuration of a battery unit having no discharge current integrating means according to Embodiment 1 of the present invention.

FIG. 4 is a characteristic diagram showing the relationship between the output voltage and the discharge capacity of the battery, and FIG. 5 is a characteristic diagram showing the relationship between the discharge current integrated value and the discharge capacity of the battery.

FIG. 6, FIG. 7, FIG. 8, and FIG. 9 are flowcharts showing the processing of the portable radio terminal device according to the first embodiment of the present invention, and are block diagrams showing the configuration.

(Embodiment 1) First, the portable wireless terminal device according to Embodiment 1 of the present invention will be described with reference to FIG. 1 which is a block diagram showing the configuration of the portable wireless terminal device according to Embodiment 1 of the present invention. I do.

The portable wireless terminal device 1 is a device for performing wireless communication, and performs transmission and reception through the connected antenna 2.

The antenna 2 is a transmitting / receiving antenna that transmits a transmission signal output from the RF circuit 3 inside the portable wireless terminal device 1 as a radio wave and inputs the received radio wave as a reception signal to the RF circuit.

During a call, the RF circuit 3 modulates an input digital audio signal input from the audio processing unit 4 and outputs it to the antenna 2 as a transmission signal, and demodulates a reception signal input from the antenna 2 to perform audio processing. A circuit for outputting to the section 4 an output digital audio signal.

Further, the RF circuit 3 transfers the portable radio terminal device 1 to a call state when receiving a call reception signal from the antenna 2 during a non-call, or when the operator requests a call, and again at the end of the call. The control unit 5 performs control to shift to the call state or the non-call state, including processing for shifting to the non-call state.

Note that the RF circuit 3 also includes an incoming call waiting process for determining whether or not an incoming signal has been received from the antenna 2 during a non-call, and the control unit 5 also controls the incoming call waiting process.

The voice processing circuit 4 performs a decoding process and a D / A conversion process (digital / analog conversion process) on the output signal obtained by demodulating the received signal by the RF circuit 3, and outputs the output signal to the handset 6 as an output analog voice signal. An output signal obtained by performing A / D conversion processing (analog-to-digital conversion processing) and encoding processing on an input analog audio signal input from the handset 6 is output as an input signal to be modulated by the RF circuit 3.
The operation of the audio processing circuit 4 is also controlled by the control unit 5.

The control unit 5 includes the RF circuit 3 and the audio processing unit 4
Control of a transition from a non-talking state to a talking state or from a talking state to a non-talking state, an incoming call waiting process, and a process of transmitting a call in response to a request from a user. .

When it is determined in the incoming call waiting process that there is an incoming call, the control unit 5 controls the incoming call LED 7, the incoming sound control unit 8,
Alternatively, a process of notifying an incoming call through the vibrator control unit 9 is also performed.

The control unit 5 also includes a display unit 1 for displaying information.
0 and the backlight control unit 11 that controls the display unit 10 to be bright and easy to see.

The control unit 5 also uses the information input through the input device 12 as an input means to perform a call start permission, a call end permission, an input process for specifying a destination, and various operation setting processes. Do.

Further, the control unit 5 includes an incoming LED 7, a ring tone control unit 8, a vibrator control unit 9 according to the battery remaining amount detection result notified from the battery remaining amount detecting unit 13 for detecting the battery remaining amount. , Display unit 10 and backlight control unit 11
Also, a power saving control process for restricting the operation is performed.

The handset 6 includes a microphone, which is a voice input means (not shown), and a speaker, which is a voice output means (not shown), and outputs voice input to the microphone to the voice processing circuit 4 as an input analog voice signal. It is an input / output device that outputs an output analog audio signal input from the audio processing circuit 4 as audio from a speaker.

The incoming call LED 7 is an output device for notifying the incoming call by light using the lighting or blinking of an LED (light emitting diode).

The incoming call control section 8 is a functional section for controlling the operation of the buzzer 14 for notifying an incoming call by sound, and for performing a control process of incoming call notification.

The vibrator control section 9 is a functional section for controlling the operation of the vibrator 15 for notifying an incoming call by vibrating, and performing a control process of the incoming call notification.

The display unit 10 is composed of an LCD (Liquid Crystal Display), and displays information notified from the control unit 5 by symbols and figures.

The backlight control section 11 is a backlight 1 which is a light source for making the display on the display section 10 bright and easy to see.
6 is a functional unit for controlling the amount of light.

The input device 12 is composed of a plurality of key switches, and sets the operation of the portable wireless terminal 1 by operating the key switches.

The remaining battery level detecting section 13 is a functional section that detects the remaining battery level of the battery section 17 and notifies the control section 6 of the result of detecting the remaining battery level.

The battery unit 17 supplies power to the internal circuit of the portable wireless terminal device 1 through a power supply line (not shown), and notifies the remaining battery level to the remaining battery level detector 13. Here, the output voltage value of the battery unit 17 or the integrated discharge current value can be used as the battery remaining amount notified from the battery unit 17 to the battery remaining amount detection unit 13.

FIGS. 2 and 3 show the structure of the battery section 17.
This will be further described with reference to FIG.

The battery unit 17 supplies power to the internal circuit of the portable wireless terminal 1 and notifies the battery remaining amount detecting unit 13 of the battery remaining amount. The battery remaining amount is determined by the output voltage value of the battery unit 17. The notification may be made or the discharge current integrated value may be used.

FIG. 2 is a block diagram showing the configuration of the battery unit for notifying the remaining battery level by the integrated discharge current value in the first embodiment. FIG. 3 is notifying the remaining battery level by the output voltage value in the first embodiment. FIG. 2 is a block diagram showing a configuration of a battery unit to be used.

The battery unit for notifying the remaining battery level by the integrated discharge current value shown in FIG. 2 is a rechargeable nickel-cadmium battery,
Batteries 18 and 19, which are power sources using a secondary battery typified by a nickel-metal hydride battery, a lithium ion battery, or a primary battery such as a manganese battery or an alkaline battery, and output currents of the batteries 18 and 19 And a battery temperature measuring means 21 for measuring the temperatures of the batteries 18 and 19 and outputting the measurement results.

In FIG. 2, the battery 18 and the battery 19 are connected in parallel. However, in order to obtain sufficient voltage and current values necessary for the operation of the portable radio terminal 1, the battery 18 and the battery 19 are connected. And three or more batteries may be connected to the battery, or the battery 19 may be omitted and the battery 18 alone may be used, or a plurality of batteries may be connected in series.

The battery 18 and the battery 19 each have a positive electrode and a negative electrode, but since they are connected in parallel, the positive electrode of the battery 18 and the positive electrode of the battery 19 have the same potential. 22.

Similarly, the negative electrode of the battery 18 and the negative electrode of the battery 19 have the same potential.
And

In the following description, it is assumed that the battery negative terminal 23 is at the reference potential (0 V) and is at the ground potential of the portable wireless terminal device 1.

The battery positive terminal 22 is connected to the discharge current integrating means 2.
0, and further connected to a positive terminal 24, which is a terminal for supplying power from the discharge current means 21 to the internal circuit of the portable wireless terminal device 1.

The discharge current integrating means 20 is connected to the battery positive terminal 2
A discharge current integrated value obtained by calculating an integrated value of the current flowing from 2 to the positive electrode terminal 24 is output to a battery identification / discharge current integrated value reading terminal 25.

Here, the battery identification / discharge current integrated value reading terminal 25 notifies the battery unit 17 to the battery remaining amount detecting unit 13 whether the battery unit 17 has the discharge current integrating means 20. Battery unit 17 is discharge current integrating means 2
This terminal also serves to output a discharge current integrated value when it has 0.

The discharge current integrating means 20 resets the integrated value of the discharge current when the battery 18 and the battery 19 are fully charged by using the secondary batteries to the initial value, and discharges from the fully charged state. The discharge current amount can be measured by adding the discharge current amount to the integrated discharge current value while the battery 18 and the battery 19 are being charged. By performing the subtraction, the discharge current integrated value can be measured even when the portable wireless terminal device 1 is used during charging.

Even when a primary battery is used as the battery 18 and the battery 19, the discharge current integrated value can be similarly measured by resetting the discharge current integrated value to the initial value when the battery is replaced.

The battery negative terminal 23 is connected to the portable radio terminal 1
Connected to the negative electrode terminal 26, which is a terminal for supplying power to the internal circuit, and also connected to the battery temperature measuring means 21.

In order to supply power to the internal circuit of the portable wireless terminal device 1 through the positive terminal 24 and the negative terminal 26, the positive terminal 24 and the negative terminal 26 must be connected to a power line of the portable wireless terminal device 1 (not shown). Can be implemented.

The battery temperature measuring means 21 measures the temperatures of the batteries 18 and 19,
This can be realized by providing a temperature sensor around and measuring the temperature, and outputting the temperature measurement result to the battery temperature reading terminal 27.

Here, when the temperature measurement result does not exceed the set temperature, the battery temperature measuring means 21 connects the battery negative terminal 23 and the battery temperature reading terminal 27 connected to the battery temperature measuring means 21 to each other. When the connection is made and the battery negative electrode terminal 23 and the battery temperature reading terminal 27 are disconnected when the temperature measurement result exceeds the set temperature, the portable wireless terminal device 1 connected to the battery temperature reading terminal 27 is disconnected. The internal circuit or a separately provided charging circuit can determine the temperature measurement result depending on whether the battery temperature reading terminal 27 is connected to the battery negative terminal 23 or not.

The result of measuring the temperature of the battery can be used to lower the charging current value or stop the charging, particularly when the temperature of the battery becomes higher than a specified value during charging.

Next, a description will be given of a battery unit for notifying the remaining battery level with the output voltage value shown in FIG.

A battery 28 and a battery 29, which are power sources using a secondary battery or a primary battery, are connected in parallel in the same manner as the batteries 18 and 19; One or more batteries may be connected in parallel, or one may be removed by removing the battery 29, and a plurality of batteries may be connected in series. The positive electrode of the battery 28 and the positive electrode of the battery 29 may have the same potential. Yes, battery positive terminal 30
And the negative electrode of the battery 28 and the negative electrode of the battery 29 are connected to the battery negative terminal 31.

In the following description, it is assumed that the battery negative terminal 31 is at the reference potential (0 V) and is at the ground potential of the portable wireless device 1.

The battery positive terminal 30 is connected to the positive terminal 32, the battery negative terminal 31 is connected to the negative terminal 33, and the positive terminal 24 and the negative terminal 26 are connected to a power line (not shown) of the portable radio terminal 1. The power can be supplied to the internal circuit of the portable wireless terminal device 1.

Further, the battery negative terminal 31 is also connected to a battery temperature measuring means 34 and a battery identification / discharge current integrated value reading terminal 35, and the battery temperature measuring means 34 is connected to a battery temperature reading terminal 36.

Therefore, the terminal 35 for reading the battery identification / discharge integrated current value has the same potential (0
V).

The battery temperature measuring means 34 measures the temperatures of the batteries 28 and 29 in the same manner as the battery temperature measuring means 21, and outputs the temperature measurement results to the battery temperature reading terminal 3.
6 is output.

Here, the battery identification / discharge current integrated value readout terminal 25 and the battery identification / discharge current integrated value readout terminal 35 are connected to the battery whose battery remaining amount is measured by the discharge current integration means shown in FIG. If the battery does not have the discharge current integrating means shown in FIG. 3 and measures the remaining battery level by the output voltage value, and if the battery measures the remaining battery level by the discharging current integrating means, The remaining amount of the battery is notified to the amount detecting unit 13, and the remaining battery amount is detected by the remaining battery amount detecting unit 13.

Here, the potential of the connected battery identification / discharge current integrated value read terminal 25 or the battery identification / discharge current integrated value read terminal 35 is grounded. When the potential is 0 V, the terminal is connected to the battery unit 17. Can be detected as a battery whose remaining voltage is measured by an output voltage value without the discharge current integrating means shown in FIG. 3, and the remaining battery level detecting unit 13 detects the battery based on the voltage difference supplied by the power supply line. Positive terminal 3
The remaining battery level can be detected from the potential difference between the second terminal 2 and the negative terminal 33.

Next, the fact that the remaining battery level can be detected from the output voltage value and the discharge current integrated value is shown in FIG. 4 which is a characteristic diagram showing the relationship between the output voltage value and the discharge capacity of the battery, and the integrated discharge current value and discharge current of the battery. This will be described with reference to FIG. 5, which is a characteristic diagram showing the relationship between capacitances.

FIG. 4 shows a battery for measuring the remaining battery level by the discharge current integrating means shown in FIG. 2 or a battery for measuring the remaining battery level by the output voltage value without the discharge current integrating means shown in FIG. The change of the output voltage with respect to the discharge capacity is shown.

As can be seen from FIG. 4, generally, the characteristics of the battery are such that the output voltage value gradually decreases up to a certain discharge capacity, and the output voltage value sharply decreases as the discharge capacity increases.

Therefore, it is possible to detect that the discharge capacity is large, that is, the remaining battery level is small, using the output voltage value. Particularly, when the remaining battery level is low, the measurement error is reduced, and the remaining battery level is reduced. The excess corresponding to the measurement error to be included in the determination threshold can be reduced.

In FIG. 4, the low voltage value V1 is a process for stopping the operation of the portable radio terminal device 1 because sufficient power for operating the portable radio terminal device 1 is not obtained from the battery unit 17, ie, a low battery process. Is started, and is distinguished from other thresholds as a low battery judgment reference value.

[0096] The low voltage value V2 corresponds to the portable radio terminal device 1.
This is a threshold value for starting a power saving process, which is a process for limiting power consumption by limiting the function described above, and is used as a power saving start determination reference value in distinction from a low battery determination reference value.

FIG. 5 shows the change of the integrated discharge current value with respect to the discharge capacity of the battery whose remaining battery capacity is measured by the discharge current integrating means shown in FIG.

As can be seen from FIG. 5, generally, the discharge capacity and the discharge current integrated value have a substantially proportional relationship.

Therefore, the remaining battery level can be measured by the integrated discharge current value. However, the detection accuracy is almost constant irrespective of the remaining battery level, and the remaining battery level is larger than when the output voltage value is used. Even in such a case, the measurement error does not increase, and even when the remaining battery level is large, the excess corresponding to the measurement error to be included in the threshold for determining the remaining battery level can be reduced.

In FIG. 5, the low discharge current integrated value Ah1 is
The low battery judgment reference value which is a threshold value set for starting the low battery process is meant. The low discharge current integrated value Ah2 is a threshold value set for starting the power saving operation. It means the start judgment reference value.

In a battery whose remaining battery level is measured by the discharging current integrating means shown in FIG. 2, the integrated discharging current value output to the battery identification / discharging current integrated value reading terminal 25 is the remaining battery level which is the receiving side of the output value. Since it is sufficient that the battery level can be detected by the amount detection unit 13, the measurement result may be a value converted into a voltage value or a code string expressing the measurement value. The explanation will be made by using the calculated values.

For example, when the discharge capacity is 0%, which means full charge, the voltage is equivalent to the voltage of the battery positive terminal 22. When the remaining battery capacity is 100%, which means empty, the battery negative terminal 26 is used.
(0 V), it is possible to determine the remaining battery level from the voltage value output to the battery identification / discharge current integrated value read terminal 25.

At this time, when the discharge capacity increases, the voltage value of the battery positive electrode terminal 25 also changes and decreases in the same manner as in FIG. 4, and when the measured remaining battery level is expressed by the voltage value, the voltage value decreases. The battery level can be corrected by the battery unit 17 or the battery level detection unit 13 in accordance with the time, so that the battery level can be correctly notified.

Since the power saving control is performed when the remaining battery level of the battery unit 17 is sufficient to operate the portable wireless terminal device 1, the voltage value from the fully charged state to the low battery determination reference value is obtained. The battery level may be converted in consideration of only the change of the battery voltage, or the voltage value may be considered when setting the threshold value. The voltage value corresponding to the integrated discharge current value may be determined based on the output voltage when the discharge capacity is 0%. Alternatively, a value obtained by multiplying the instantaneous voltage value by a discharge current integrated value as a coefficient may be used.

In the battery shown in FIG. 3 for measuring the remaining battery power by the output voltage value without having the discharge current integrating means, the battery identification / discharge current integrated value reading terminal 35 is the battery negative terminal 31.

Therefore, a battery for measuring the remaining battery level by the discharge current integrating means shown in FIG. 2 or a battery which does not have the discharging current integrating means shown in FIG. When the battery unit 17 is used, when the battery unit 17 can supply sufficient power to operate the portable wireless terminal device 1, the battery identification / discharge current integrated value reading terminal 25,
Alternatively, a terminal 35 for reading the battery identification / discharge current integrated value
The battery value shown in FIG. 2 is determined by determining whether or not the voltage is 0 V, so that the battery shown in FIG. 2 (measured value is 0 V) and the battery shown in FIG. 3 (measured value is other than 0 V) can be distinguished. it can.

If the battery unit 17 cannot supply the power required to operate the portable wireless terminal device 1, it is determined that the battery is in the low battery state regardless of the battery identification result, and the operation of the portable wireless terminal device 1 is performed. Is stopped, the output value from the battery identification / discharge current integrated value reading terminal 25 is kept at 0 V until it is determined that the battery is in the low battery state.
The battery identification / discharge current integrated value reading terminal 25 or the battery identification / discharge current integrated value is set to a value that does not decrease to 0 V from the set value that does not decrease to 0 V to 0 V. The presence or absence of the discharge current integrating means can be identified by comparing the voltage value notified by the read terminal 35 with the battery identification threshold.

If the battery identification is performed based on the difference in shape such as unevenness attached to the battery unit 17 to identify the battery type, the battery identification / discharge current integrated value read terminal 25 is read out. It is also possible to eliminate the need for the battery identification / discharge current integrated value readout terminal 35 by using only this.

Next, in the battery unit 17, the battery remaining amount is measured by the discharge current integrating means shown in FIG. 2 or the battery remaining amount is measured by the output voltage value without having the discharge current integrating means shown in FIG. The operation of the mobile wireless terminal device 1 using a battery will be described with reference to FIGS. 6, 7, 8, and 9 using flowcharts illustrating the processing of the mobile wireless terminal device 1 in the first embodiment. .

First, when the portable radio terminal device 1 is used, the process starts from step S1 in FIG. 6, and in step S1, a startup process for turning on the power of the portable radio device 1 is performed.
Proceed to.

In step S2, the battery type of the battery unit 17 connected from the battery identification / discharge current integrated value read terminal 25 or the battery identification / discharge current integrated value read terminal 35 is read, and the flow advances to step S3.

In step S3, it is determined whether or not the battery type read in step S2 is a battery having discharge current integrating means. If it is determined that the battery type is a battery having discharge current integrating means, step S3 is reached. Proceeding to S4, if it is determined that the battery is not provided with the discharge current integrating means, the process proceeds to step S7.

In step S4, the battery measurement type, which is a flag, is set as the discharge current integrated value, so that the battery unit 17 is set to include the discharge current integrating means, and the flow proceeds to step S5.

In step S5, the low battery judgment reference value is set as the discharge current integrated value Ah1 shown in FIG. 5, and the flow advances to step S6.

In step S6, the power saving start determination reference value, which is a reference value for starting power saving control during a call, is shown in FIG.
The process proceeds to step S10 as the discharge current integrated value Ah2 shown in FIG.

In step S7, by setting the battery measurement type, which is a flag, to a voltage value, it is set that the battery unit 17 does not include the discharge current integrating means, and the flow advances to step S8.

In step S8, the low battery determination reference value is set to the low voltage value V1 shown in FIG. 4, and the process proceeds to step S9.

In step S9, the power saving start determination reference value is set to the low voltage value V2 shown in FIG. 4, and the process proceeds to step S10.

In step S10, it is determined whether or not the battery measurement type is a voltage value. If yes, that is, if it is determined that the battery measurement type is a voltage value, the process proceeds to step S11, and if no, that is, the discharge current integrated value is determined. Step S
Proceed to 12.

In step S11, the remaining battery level detector 13
, The voltage value of the battery unit 17 is obtained as the remaining battery power, and the process proceeds to step S13.

Here, the voltage value of the battery section 17 is
4 can be obtained by measuring the voltage value.

In step S12, the remaining battery level detector 13
Then, the integrated value of the discharge current of the battery unit 17 is obtained as the remaining battery charge, and the process proceeds to step S13.

The integrated discharge current value of the battery section 17 obtained in step S12 is measured by the discharge current integrating means 20 and notified through the battery identification / discharge current integrated value read terminal 25.

In step S13, the determination is made based on the low battery determination reference value. If the battery measurement type is a voltage value, the voltage value obtained in step S11 is equal to or less than the low battery determination reference value low voltage value V1. It is determined whether the answer is YES, that is, if it is determined that the voltage is equal to or less than the low voltage value V1, the process proceeds to step S14.
If it is determined that it is not the following, the process proceeds to step S20 in FIG.

In step S13, when the battery measurement type is the discharge current integrated value, it is determined whether or not the discharge current integrated value obtained in step S12 is equal to or greater than the discharge current integrated value Ah1, which is a low battery determination reference value. If YES, that is, if it is determined that the current is equal to or greater than the discharge current integrated value Ah1, the process proceeds to step S14.
If it is determined that it is not the above, the process proceeds to step S20 in FIG.

In step S14, since the battery is in the low battery state, a process of stopping the operation of the portable wireless terminal device 1 is performed, and the power is turned off.

At step S20 in FIG. 7, it is determined whether or not there is an incoming call of portable radio terminal device 1. If yes, that is, if there is an incoming call, the process proceeds to step S23, and if no, that is, if there is no incoming call, the process proceeds to step S21.

In step S21, the presence or absence of a call is determined.
If it is determined that the answer is yes, that is, there is a call, step S22
If the determination is no, that is, no call is made, the process returns to step S10 in FIG.

In step S22, it is determined whether or not the call is an emergency call. If YES, that is, if it is determined that the call is urgent, the process proceeds to step S24. Proceed to S23.

Whether or not an emergency call is made in step S22 depends on whether or not an emergency call is made to the registered emergency call partner by registering information on the emergency call partner with a telephone number in advance. judge.

[0131] The caller may be a caller specified in advance without being limited to an emergency.

In step S23, it is determined whether or not the power saving function is set. If yes, that is, if it is determined that the power saving function is set, the process proceeds to step S24. If no, that is, if it is determined that the power saving function is not set, step S25 is performed. Proceed to.
In step S24, a power saving control flag for controlling the power saving function is set to ON, and the process proceeds to step S26.

In step S25, the power saving control flag is set to off, and the flow advances to step S26.

In step S26, the power-saving flag for controlling the return from the power-saving processing operation to the normal processing (processing in which the power-saving processing is not performed) is set to OFF, and the flow advances to step S30 in FIG.

At step S30 in FIG. 8, a process for starting a telephone call is performed, and the process proceeds to step S31.

In step S31, it is determined whether or not the call has been completed. If yes, that is, if the call has been completed, the process proceeds to step S50 in FIG. 9, and if no, that is, it is determined that the call is ongoing. Proceed to step S32.

In step S32, the battery measurement type is determined in the same manner as in step S10. If YES, that is, if the battery measurement type is determined to be a voltage value, the flow advances to step S33.
If it is determined as No, that is, if it is the discharge current integrated value, the process proceeds to Step S34.

In step S33, as in step S11, the voltage value of the battery section 17 is obtained as the remaining battery power, and
Proceed to 35.

In step S34, as in step S12, the discharge current value of the battery unit 17 is obtained as the remaining battery level, and the flow advances to step S35.

In step S35, it is determined whether or not the power saving control section flag is on. If yes, that is, if it is on, the process proceeds to step S36. If it is not, that is, if it is off, step S42 is made. Proceed to.

In step S36, it is determined whether or not to execute the power saving control. If the battery measurement type is the voltage value, the voltage value obtained in step S33 is the low voltage value which is the power saving start determination reference value. It is determined whether or not the voltage is equal to or lower than V2. If yes, that is, if it is determined that the voltage is not lower than the low voltage value V2, the process proceeds to step S37. If it is determined that the voltage is not lower than the low voltage value V2, the process returns to step S31.

In step S36, if the battery measurement type is the discharge current integrated value, it is determined whether or not the discharge current value obtained in step S34 is equal to or greater than the discharge current integrated value Ah2 which is a power saving start determination reference value. If the determination is YES, that is, if it is determined to be equal to or greater than the discharge current integrated value Ah2, the process proceeds to step S.
The process proceeds to 37, and if it is determined that the current value is not equal to or greater than the discharge current integrated value Ah2, the process returns to step S31.

In step S37, the power supply to the display unit 10 is stopped to reduce the power consumption of the display unit 10,
Proceed to step S38. Even if the power supply is stopped, the display unit 10 performs a normal display operation by restarting the power supply.

Further, even if the power supply to the display unit 10 is not stopped, the power consumption can be reduced by reducing the power supply amount.

In step S38, the power supply to the backlight control unit 11 is stopped to reduce the power consumption in the backlight control unit 11 and the backlight 16, and the process proceeds to step S39.

Even if the backlight control unit 11 stops the power supply, the backlight control unit 11 and the backlight 16 operate normally by restarting the power supply.

In place of stopping the power supply to the backlight control unit 11, the power supply amount can be reduced to reduce the power consumption of the backlight control unit 11 and the backlight 16.

In step S39, the power supply to the ring tone controller 8 and the buzzer 14 is reduced by stopping the power supply to the ring tone controller 8, and the process proceeds to step S40.

Note that even if the power supply to the ring tone control unit 8 is stopped, the power supply is started again so that the ring tone control unit 8 is stopped.
And the buzzer 14 operates normally.

Instead of stopping the power supply to the ring tone control unit 8, the power supply amount can be reduced and the power consumption of the ring tone control unit 8 and the buzzer 14 can be reduced.

In step S40, the power saving control section flag is set to off, and the flow advances to step S41.

In step S41, the power saving flag is set to ON, and the flow returns to step S31.

In step S42, as in step S13, if the battery measurement type is a voltage value, step S3
It is determined whether or not the voltage value obtained in step 3 is equal to or lower than the low voltage value V1, which is the low battery determination reference value. If yes, that is, if the voltage value is equal to or lower than the low voltage value V1, the process proceeds to step S43. If it is determined that the voltage value is not lower than V1, the process returns to step S31.

In step S42, if the battery measurement type is the discharge current integrated value, it is determined whether or not the discharge current value obtained in step S34 is equal to or greater than the discharge current integrated value Ah1, which is the low battery determination reference value. If yes, that is, if it is determined that it is not less than the discharge current integrated value Ah1, the process proceeds to step S43, and if it is determined that it is not more than the discharge current integrated value Ah1, the process returns to step S31.

In step S43, the call is forcibly terminated, and the flow returns to step S14 in FIG.

In step S50 of FIG. 9, the call is terminated,
Proceed to step S51.

In step S51, it is determined whether or not the power saving flag is ON. If YES, that is, if the power saving flag is ON, the process proceeds to step S52.
If it is determined to be no, that is, it is off, the process returns to step S10 in FIG.

In step S52, power supply to the display unit 10 is restarted, and the flow advances to step S53.

In step S53, the power supply to the backlight control section 11 is restarted, and the flow advances to step S54.

In step S54, the power supply to the incoming call control unit 8 is restarted, and the process returns to step S10 in FIG.

The processing for reducing the power consumption in the processing from step S30 to step S50 during a call (steps S37, S38, S39)
When the call is terminated, the process for reducing power consumption is stopped (step S52, step S53, step S54) and the function is restored, but the threshold is set regardless of the call or standby state. Step S36 of comparing the power saving start determination reference value with the remaining battery level is performed,
When the remaining battery power is lower than the power saving start determination reference value, the process of reducing power consumption (steps S37, S38, and S39) may be continued, and the remaining battery power may be reduced. After it is determined that it is less than the power start judgment reference value, the process of reducing power consumption is continued without comparing the remaining battery level and the power saving start judgment reference value until a new charge or replacement of the battery is performed. However, only the comparison between the remaining battery level and the low battery determination reference value may be performed.

The order of steps S37, S38, and S39 for reducing power consumption may be changed, or the steps S37, S38, and S39 may not be performed at the same time. , At least one process may be realized,
Steps S37, S38, and S39
In addition to the above processing, the processing for stopping power supply to the vibrator control unit 9 or reducing the power consumption in the vibrator control unit 9 and the vibrator 15 for reducing the power supply amount, and stopping or supplying power to the incoming LED 7 are performed. In addition to the process of reducing the power consumption of the incoming LED 7 to be reduced, each process may be performed simultaneously or at least one of them may be realized.

Further, in addition to the processing for reducing the plurality of power consumptions, at least one of demodulation processing of a received signal in the RF circuit 3, decoding processing in the audio processing circuit 4, and D / A conversion processing in the audio processing circuit. The processing may be stopped to reduce the power consumption, and the power consumption may be reduced by limiting the function of the portable wireless terminal device 1 to only the transmission.

In the case where the power consumption is reduced by limiting the function of the portable radio terminal device 1 to only transmission, a storage device is added to the portable radio terminal device 1 to further perform demodulation processing of the received signal or demodulation processing in addition to the demodulation processing. It is also possible to store a data sequence representing digital voice data obtained as a result of performing the decoding process in the storage device, and to reproduce a data sequence that is a digital voice signal stored after newly charging or after replacing the battery. , D / A conversion, and power consumption at the analog audio output including the amplifier, the data string stored in the storage device at this time is compressed digital audio data before executing the decoding process. This is effective because the amount of storage device used is small and decoding processing is not required at the time of storage.

Further, the processing for reducing power consumption is not limited to the transmission only, but the modulation of the input signal in the RF circuit 3, the encoding processing in the audio processing circuit 4, and the A / D conversion processing in the audio processing circuit. By stopping at least one of the processes, the power consumption may be reduced, and the power consumption may be reduced by limiting the function of the portable wireless terminal device 1 to only reception.

When the power consumption is reduced by limiting the function of the portable radio terminal 1 to reception only, a storage device is added to the portable radio terminal 1 to replace the audio signal input to the portable radio terminal 1. Alternatively, by storing in advance a data sequence meaning digital voice data in the storage device, and performing a modulation process or an encoding process and a modulation process on the data sequence and transmitting the data sequence, the processing of the analog voice signal including the amplifier and the A It is possible to reduce the power consumption in the / D conversion processing and, depending on the setting, the encoding processing. At this time, the data string stored in the storage device may be digital audio data that has been encoded in advance. This is effective because the amount of storage used is small and no encoding process is required.

In addition, priorities are given in advance to the above-described five processes for reducing power consumption and processes for limiting functions only to transmission or reception only, and a plurality of power-saving start determination reference values are set. According to the comparison result between the power saving start determination reference value and the remaining battery power, if the processing for reducing the power consumption having a higher priority is performed in order from the case where the remaining battery power is higher, the remaining battery power can be reduced. It is possible to reduce the power consumption according to the remaining battery power while realizing the necessary functions as much as possible, starting from the functions that are not necessary much (functions that are reduced by the process of reducing power consumption with high priority) Becomes

Here, the priority order may be set in advance or may be set according to the user's preference.

If the user desires a function during the process of reducing power consumption, the process of reducing power consumption may be stopped and the function may be restored. In the case where the integrated current value is used, the measurement error with respect to the remaining battery level is smaller than in the case where the voltage value is used. This is advantageous because control of processing for reducing power consumption can be performed even in a state where the remaining battery capacity is sufficient.

[0170]

As described above, according to the present invention, since the control of the additional function is performed by the additional function control means in accordance with the remaining battery power obtained by the remaining battery power detection means, a call can be made. Thus, the power consumption of the additional function can be reduced entirely or partially.

Since the operation of the additional function is limited according to the remaining battery power only when the call state detecting means detects that the telephone is in the talk state, the power consumption of the additional function is reduced during the call and the call is made. When not, additional functions can be used.

When the call state detecting means detects that the telephone is in a talking state, the additional function control means restricts the operation of the additional function according to the remaining battery power, and the additional function control means restricts the operation of the additional function. Reduces the power consumption of the additional functions regardless of whether it is in a call state or a non-call state, so that the additional function control means does not disable the additional functions while the additional functions are being used in the non-call state. It is possible to reduce the power consumption by limiting the operation of the additional function only after the remaining battery level becomes low and after the first call after the low battery level.

When the destination detected by the destination detection means is a predetermined destination, the additional function control means limits the operation of the additional function according to the remaining battery power. Sometimes, the power consumption of the additional functions can be reduced according to the remaining battery power.

The power saving control selecting means selects whether or not to control the power consumption of the additional function by the additional function control means, so that the additional function can be used when the user needs it, and the battery can be used when the user does not need it. The power consumption of the additional function can be reduced according to the remaining amount.

The power saving control selecting means can select whether or not to control the power consumption of the additional function by the additional function controlling means. Only for a predetermined destination, regardless of the result of the selection by the power saving control selecting means. Since the power consumption of the additional function is controlled by the additional function control means, it is possible to specify execution or stop of the process of restricting the operation of the additional function according to the remaining battery level at the request of the user, but the user can talk with a specific destination. In some cases, even when the user has selected to use the additional function, the power consumption of the additional function can be reduced when the remaining battery level is low.

Further, the battery remaining amount detecting means detects the battery remaining amount using at least one of the discharge current integrated value which is the integrated value of the discharge current and the output voltage value. The remaining battery level can be detected based on the result of the measurement, and the operation of the additional function can be limited based on the detected remaining battery level.

Further, the battery section is detachable from the communication terminal device, and the battery remaining amount detecting means is provided in the battery section, so that the battery can be easily charged or exchanged, and the battery can be charged or exchanged for communication. Even when the remaining battery level of the battery unit attached to the terminal device changes, the power consumption of the additional function can be reduced by the additional function control unit according to the remaining battery level of the battery unit.

Since the battery type notifying means notifies as to the battery type whether or not the discharge current integrated value is used for detecting the remaining battery level, the additional function control means controls the power consumption of the additional function according to the remaining battery level which varies depending on the battery type. Can be reduced.

Since the notification of the battery type is notified by the shape of the battery unit or the notification signal, the power consumption of the additional function can be reduced by the additional function control means according to the battery type.

In addition, the additional function control means according to the remaining amount of the battery, wherein the additional function control means brightens the display function for displaying symbols and figures and the input switch which is the display function or input means using a light source. Backlight function,
Incoming call notification function for notifying the incoming call, digitization processing function to convert a transmission analog signal, which is an input signal including voice, to transmission digital signal, and encoding processing function to convert the transmission digital signal to transmission encoded signal, A modulation processing function of modulating the transmission coded signal into a transmission signal, a demodulation processing function of demodulating a reception signal into a reception coded signal, and a decoding processing function of decoding the reception coded signal into a reception digital signal; In addition, since at least one of the analog conversion processing function of converting the reception digital signal into the reception analog signal is limited as an additional function, the operation is limited, so that the power consumption of the additional function can be reduced.

The additional function control means restricts the operation according to the remaining battery power as a digitizing processing function or a digitizing processing function and an encoding processing function as additional functions, and transmits the transmission signal stored in the transmission data storage means as a transmission signal. Since data is transmitted after performing the modulation processing function or the encoding processing function and the modulation processing function, power consumption is reduced by not converting analog signals to transmission signals, and predetermined transmission data is transmitted to the other party It can be transmitted as a signal.

The additional function control means includes an analog processing function or a decoding processing function and an analog processing function as additional functions, and restricts the operation of the additional functions according to the remaining battery power. Since the received digitized signal is stored in the received data storage unit, the stored received data can be decoded and analogized after the battery capacity is increased or when the call is terminated and power supply for transmission is not required. You can go and play.

Also, the remaining battery level detecting means for detecting the remaining battery level, and when the remaining battery level is smaller than a predetermined value, the call is not terminated even if the operation is restricted among the functions added to the communication terminal device. A power consumption reduction method for reducing the power consumption by limiting the operation of at least one additional function,
When the remaining battery level is detected by the remaining battery level detection means, and when the detected remaining battery level is smaller than the threshold value, the operation of the additional function of the communication terminal device is restricted, so that the remaining battery level is reduced In addition, the power consumption of the additional function can be reduced, and the reduced power consumption of the additional function can be used in a call.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a portable wireless terminal device according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a battery unit including a discharge current integrating unit according to the first embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a battery unit without a discharge current integrating means according to the first embodiment of the present invention.

FIG. 4 is a characteristic diagram showing a relationship between an output voltage of a battery and a discharge capacity.

FIG. 5 is a characteristic diagram showing a relationship between a discharge current integrated value and a discharge capacity of a battery.

FIG. 6 is a flowchart showing processing of the portable wireless terminal device according to the first embodiment of the present invention.

FIG. 7 is a flowchart showing processing of the portable wireless terminal device according to the first embodiment of the present invention.

FIG. 8 is a flowchart showing processing of the portable wireless terminal device according to the first embodiment of the present invention.

FIG. 9 is a flowchart showing processing of the portable wireless terminal device according to the first embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Portable wireless terminal device 3 RF circuit 4 Voice processing unit 5 Control unit 7 Incoming LED 8 Ring tone control unit 9 Vibrator control unit 10 Display unit 11 Backlight control unit 13 Battery remaining amount detection unit 17 Battery unit 18 Battery 19 Battery 20 Discharge Current integration means 25 Battery identification / discharge current integrated value readout terminal 28 Battery 29 battery 35 Battery identification / discharge current integrated value readout terminal

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yuki Numazawa 2-5 Meido, Izumi-ku, Sendai-shi, Miyagi F-term in Matsushita Communication Sendai Laboratory Co., Ltd. 5G003 EA05 EA08 5K027 AA11 BB17 GG03 HH00 HH21 MM16 5K067 AA27 AA43 BB04 EE02 FF19 FF22 FF31 GG01 GG06 GG21 HH05 HH12 KK05

Claims (14)

[Claims] 1. A battery level detecting means for detecting and outputting a battery level, and an operation limited among functions added to the apparatus according to the battery level output from the battery level detecting means. A communication terminal device comprising: additional function control means for controlling operation of at least one additional function that does not terminate a call. 2. The apparatus according to claim 1, further comprising a call state detecting means for detecting a call state or a non-call state, wherein said additional function control means detects said remaining amount only when said call state detecting means detects a call state. 2. The communication terminal device according to claim 1, wherein the operation of the additional function is restricted according to the remaining battery level output from the means. 3. An apparatus according to claim 1, further comprising a call state detecting means for detecting a call state or a non-call state, wherein said additional function control means detects said remaining amount when said call state detecting means detects a call state. Restricting the operation of the additional function in accordance with the remaining battery level output from the, and after restricting the operation of the additional function, depending on the remaining battery level regardless of the state detected by the call state detecting means. The communication terminal device according to claim 1, wherein the operation of the additional function is continuously restricted. 4. An apparatus according to claim 1, further comprising: a destination detection means for detecting a destination of the device, wherein said additional function control means detects the additional destination according to the remaining battery power when the destination detection means detects a predetermined destination. The communication terminal device according to claim 1, wherein operation of the function is restricted. 5. An electric power saving control selecting means for selecting execution or stop of the operation of said additional function control means, wherein said additional function control means does not operate when said execution is selected by said electric power saving control selecting means. The communication terminal device according to any one of claims 1 to 4, wherein the communication terminal device executes the operation and stops the operation when the stop is set by the power saving control selection unit. 6. A power saving control selecting means for selecting execution or stop of the operation of the additional function control means, wherein the additional function controlling means selects the execution by the power saving control selecting means or the call. The operation is performed when the destination detection means detects a predetermined destination, and the operation is performed when the power saving control selection means has set a stop and the destination detection means detects that the destination is not the predetermined destination. The communication terminal device according to claim 4, wherein the communication terminal device stops. 7. The battery remaining amount detecting means detects a battery remaining amount using at least one of an integrated value of a discharge current and an output voltage value, which is an integrated value of a discharge current.
The communication terminal device according to any one of the above. 8. The communication terminal device according to claim 1, further comprising a battery unit detachable from the communication terminal device and including the battery remaining amount detecting means. 9. The battery unit according to claim 8, further comprising a battery type notifying unit for notifying a battery type indicating whether or not the battery unit uses the integrated discharge current value to detect the remaining battery level. The communication terminal device according to claim 1. 10. The battery type notifying unit notifies the battery type by a shape of the battery unit or a notification signal.
The communication terminal device according to claim 1. 11. The additional function control means includes a display function for displaying a symbol or a graphic, a backlight function for brightening the display function or an input switch as an input means using a light source, and an incoming call notification for notifying an incoming call. Function, a digitizing processing function of converting a transmission analog signal, which is an input signal including voice, into a transmission digital signal, an encoding processing function of converting the transmission digital signal into a transmission encoding signal, and the transmission encoding signal. A modulation processing function for modulating the transmission signal,
A demodulation processing function of demodulating a received signal into a received coded signal;
Claims: At least one of a decoding function for decoding the received encoded signal into a received digital signal and an analog processing function for converting the received digital signal into a received analog signal is added as an additional function to limit the operation. Item 11. The communication terminal device according to any one of Items 1 to 10. 12. A transmission data storage means for storing transmission data which is a transmission digital signal or a transmission encoded signal in advance, wherein said additional function control means performs a digitization processing function when said transmission data is a transmission digital signal. Is an additional function, and when the transmission data is a transmission encoded signal, the digitization processing function and the encoding processing function are added functions, and the operation of the additional function is performed in accordance with the remaining battery level output from the remaining amount detection unit. 11. The communication terminal device according to claim 1, wherein transmission data stored in said transmission data storage means is converted into a transmission signal by a modulation processing function or an encoding processing function and a modulation processing function and transmitted. 13. A reception data storage means for storing reception data as a reception digital signal or reception coded signal, wherein said additional function control means performs a decoding processing function when said reception data is a reception coded signal. And an analogization processing function as an additional function, and the analogization processing function as an additional function when the received data is a received digital signal, according to the remaining battery level output from the remaining amount detection means as the additional function. 11. The communication terminal device according to claim 1, wherein operation is restricted, and a received encoded signal or a received digitized signal is stored in said received data storage means. 14. A battery termination detecting means for detecting a remaining battery level, and when the remaining battery level is smaller than a predetermined value, the call is terminated even if the operation is restricted among functions added to the communication terminal device. A power consumption reduction method for reducing power consumption by restricting the operation of at least one additional function that is not used.