JPH113153A - Radio portable information terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the consumtion of unnecessary power at the time of detecting battery voltage, to make it possible to extend using time and to prevent the misoperation of a device by switching an operation state by an operation state switching means when power disconnection is requested from a user at the time of detecting power supply voltage by a power supply voltage detection means. SOLUTION: A processing detection part 185 is periodically started until a power supply 110 for the device is turned off by a user or an input from the user disappears for a fixed time. The contents of processing executed by each processing part or the existence of processing is detected. A main CPU 150 is requested to switch the operation state based on the detected result, and when the operation state is switched, a battery residual level detection part 162 is informed of the switched result. The detection part 162 reads out a discharge data table corresponding to the operation state and a battery residual level is detected from the discharge data and a power supply voltage value and displayed on a display device 130.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless portable information terminal, and more particularly, to a wireless portable information terminal using a battery as a power source.

[0002]

2. Description of the Related Art A wireless portable information terminal device for exchanging information wirelessly is required to be portable, and therefore a battery is often used as a power source.

[0003] In a wireless portable information terminal device using a battery as a power source, a decrease in power supply voltage is determined according to the magnitude of current consumption in order to inform a user of the remaining life of the battery, and the determination result is displayed. Technology is used, and one example thereof is disclosed in Japanese Patent Application Laid-Open No. Sho 60-251416.

FIG. 13 is a block diagram showing the configuration of a wireless portable information terminal device disclosed in Japanese Patent Application Laid-Open No. 60-251416, which is a reference for judging a decrease in power supply voltage according to the magnitude of current consumption. In this example, the remaining battery life is detected by switching the voltage level and determining whether the battery power is lower or higher than the reference voltage level.

[0005] The portable terminal device shown in FIG. 13 is divided into parts according to the amount of current consumption. The printer interface unit 905 and the bar code input unit 907 are those which consume a large amount of current.
6 and a transmission interface unit 908, and a reference voltage level for determining a voltage drop is set according to the magnitude of current consumption.

[0006] In the above configuration, when controlling a device having a large current consumption, a lower reference voltage level is set for the battery voltage detecting means 903. A higher reference voltage level is set for the detecting means 903. Thereby, the battery voltage detecting means 903 operates at each reference voltage level, and it is determined whether the power supply voltage is higher or lower than the reference voltage level. When the battery voltage is lower than the reference voltage level, the display means 901 is driven to notify the operator that the battery voltage has dropped below the reference voltage level.

[0007] Similarly, as an example of a method of detecting a power supply voltage in an apparatus using a battery as a power supply, Japanese Patent Application No. Hei 8-3980 discloses.
No. 20132 proposes switching discharge data for detecting a remaining battery level according to the operating state of a terminal and the magnitude of current consumption depending on the presence or absence of operation of peripheral circuits.

[0008] The technique proposed in Japanese Patent Application No. 8-320132 is a technique disclosed in Japanese Patent Application Laid-Open No. 60-251416, in which a wireless portable terminal unit having communication control means is provided. Operation state switching means for switching to any one of operation states in which the amount of power supplied to the power supply is different from each other. Further, there is provided a means for preventing unnecessary power consumption for detecting the battery voltage and for accurately detecting the battery voltage level.

FIG. 14 is a block diagram showing a configuration of a wireless portable information terminal device proposed in Japanese Patent Application No. 8-320132.

In this conventional example, as shown in FIG.
A wireless portable terminal device 950 including a communication control unit that wirelessly transmits and receives signals to and from the mobile terminal 60, an input device 923 that receives and processes input from a user, and a portable device including a storage unit 928 that stores processed data. And a portable information processing terminal device 920.
Within, according to the processing amount, the CPU 924 including an operation state switching unit that switches to any one of operation states in which the amount of power supplied to the terminal device is different from each other, and when the battery voltage is detected, the operation state is made constant, A request processing unit 938 including a power supply voltage cycle setting means for detecting a remaining battery level based on previously prepared discharge data, and setting a cycle for performing a battery voltage detection request in accordance with the remaining battery level. Have.

[0011]

However, the conventional wireless portable information terminal device as described above has the following problems.

(1) Since it is necessary to keep the CPU operating at all times in order to detect the battery voltage and the remaining battery level, even when operating with the lowest power consumption,
The CPU must be started each time, which consumes unnecessary power and shortens the use time.

(2) In order to set a cycle for making a request for detecting a power supply voltage based on a remaining battery level, a remaining battery level is detected at a certain level, and a next detection request is made based on the detected level. If a large power consumption process such as communication control is performed after setting the time, there is a possibility that the battery remaining level detected next time may suddenly decrease,
In that case, it becomes impossible to accurately notify the user of the remaining battery level.

(3) Since it is necessary to keep the operation state of the apparatus constant during detection of the power supply voltage, the power supply of the apparatus cannot be turned off during detection of the power supply voltage.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has been made to reduce the use time by preventing unnecessary power from being consumed when detecting a battery voltage. It is an object of the present invention to provide a wireless portable information terminal device that can be extended and that can accurately notify a user of a remaining battery level to prevent a malfunction of the device due to a drop in power supply voltage.

[0016]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a wireless portable terminal unit having communication control means for wirelessly transmitting and receiving data to and from a base station, and a process for receiving an input from a user. And a portable information processing terminal unit having a data storage unit for storing processed data, and consuming power supplied to the terminal device in a wireless portable information terminal device using a battery as a power supply. Operating state switching means for switching to any one of the operating states having different amounts, and a power supply voltage detecting means for detecting a power supply voltage of the power supply. When a disconnection is requested, the operation state is switched by the operation state switching means.

Further, it is characterized in that it has an operation state fixing means for keeping the operation state constant when the power supply voltage is detected.

Further, the power supply apparatus further comprises a power supply voltage redetection requesting means for detecting the power supply voltage again when the presence or absence of the operation of the peripheral circuit changes upon the detection of the power supply voltage.

Further, there is provided a battery remaining level detecting means for detecting a remaining battery level from a power supply voltage value detected by the power supply voltage detecting means.

Further, the battery remaining level detecting means detects the battery voltage value from the detected power supply voltage value and at least one of discharge data according to an operation state and discharge data according to the presence or absence of a peripheral circuit. It is characterized by detecting a remaining level.

Further, the remaining battery level detecting means determines the power supply voltage value from the detected power supply voltage value and at least one of discharge data according to an operation state and discharge data according to the presence or absence of a peripheral circuit. The power supply apparatus further includes a power supply voltage detection cycle setting unit that sets a cycle for performing a power supply voltage detection request.

An operating state switching notifying means for notifying the remaining battery level detecting means that the operating state has been switched is provided.

[0023] Further, there is provided a peripheral operation change notifying means for notifying to the remaining battery level detecting means that the presence or absence of the operation of the peripheral circuit has changed.

[0024] Further, it is characterized in that it has a battery remaining level display means for displaying the battery remaining level.

Further, the apparatus has first and second arithmetic processing units, and the first arithmetic processing unit has the input processing means, the data storage means, the operation state switching means, the operation state fixing means, Power supply voltage re-detection requesting means, the operating state switching notifying means, and the peripheral operation change notifying means, wherein the second arithmetic processing unit includes the power supply voltage detecting means, the remaining battery level detecting means, and the remaining battery level. It is characterized by having level display means.

(Operation) In the present invention configured as described above, the operating state and the change in the presence or absence of the operation of the peripheral circuit are monitored, and the operating mode is kept constant during the detection of the battery voltage. And discharge data according to the presence or absence of the operation of the peripheral circuit, and the remaining battery level is detected from the detected voltage value, and when the presence or absence of the operation of the peripheral circuit changes during the detection of the battery voltage, the battery voltage is again detected. Perform detection. In addition, a cycle for performing a power supply voltage detection request based on the remaining battery level and the power supply voltage value is set. The functions associated with the battery voltage detection and the remaining battery level detection are executed in the second arithmetic processing unit.

Therefore, unnecessary power consumption for detecting the battery voltage is prevented, the use time of the terminal is extended as much as possible, the malfunction of the terminal due to the power supply voltage drop is prevented, and the stored data, It is possible to prevent the program from being destroyed.

[0028]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 is a block diagram showing a configuration example of a system to which a wireless portable information terminal device of the present invention is applied.

As shown in FIG. 1, in the wireless portable information terminal device 100 of the present embodiment, data is transmitted and received between the base station 30 and the service center 50 via the line network 40, and the base station 30 and the line Communication with the telephone 60 through the network 40, transmission and reception of data with the other terminal 100a by wire or wirelessly, address and the like input through the input device 10 such as a pen or a keyboard, Processing of information such as a schedule is performed. The wireless portable information terminal device 100 is provided with a communication control unit, an input processing unit, and a storage unit (all not shown).

FIG. 2 is a diagram for explaining an operation state with respect to power consumption in the wireless portable information terminal device of the present invention.

As shown in FIG. 2, in the wireless portable information terminal device of the present embodiment, operation states 1 to 4 having different execution processing speeds are set, and the operation states are set according to the power consumption. It has become. The higher the power consumption is, the closer to the operation state 1 in which the execution processing speed is faster, and conversely, the smaller the power consumption is, the closer to the operation state 4 in which the execution processing speed is slow.

As described above, the operation state of the terminal is switched according to the amount of power consumption, and the use time of the battery is extended.

FIG. 3 is a block diagram showing the configuration of the first embodiment of the wireless portable information terminal device of the present invention.

In this embodiment, as shown in FIG.
And an input device 120 including a pen, a keyboard, and the like, to which external information is input, a display device 130 for displaying data, a storage device 140 for storing data, and a second arithmetic processing device. Sub CPU 160 and RAM 1
70, a ROM 180, and a main CPU 150, which is a first arithmetic processing unit that controls the entire device, and are connected to common data and bus lines, respectively.
The ROM 180 includes an input processing unit 181 that receives data input via the input device 120,
A data conversion processing unit 182 that converts data input through the program into data receivable by a program such as an address book or a scheduler, and a storage processing unit 183 that stores data created on the program or received data.
A display processing unit 184 for displaying programs and data on the display device 130; detecting the content of processing in each processing unit and the presence / absence of processing;
A processing detection unit 185 that requests the switching of the operation state to U150 and a request processing unit 186 that issues a power supply voltage detection request at a set cycle and notifies that the power supply voltage is being detected are provided. And the sub CPU 160
Includes a power supply voltage detector 161 for detecting a power supply voltage used for the terminal, and a battery remaining level detector 162 for detecting a remaining battery level and displaying the detected remaining battery level on the display device 130. Is provided. Also, the processing detection unit 1
84 is a processing content detecting means for detecting the content of the processing performed in each processing unit and the presence or absence of processing, and an operation state switching request means for requesting the main CPU 150 to switch the operating state based on the detection result. Operating state switching notifying means for notifying the remaining battery level detecting unit 162 that the operating state has been switched, and operating state fixing means for keeping the operating state constant when the power supply voltage is detected. The remaining battery level detecting unit 13 includes a remaining battery level detecting unit that detects a remaining battery level from a power supply voltage value detected by the power supply voltage detecting unit 161 and a discharge table corresponding to an operation state; Is displayed on the display device 130, and the request processing unit 1
The power supply 86 includes a power supply voltage detection request unit that issues a power supply voltage detection request at a set cycle, and a power supply voltage detection notification unit that notifies the processing detection unit 185 that the power supply voltage is being detected.

Hereinafter, an operation of the wireless portable information terminal device configured as described above will be described.

FIG. 4 is a flowchart for explaining the operation of the wireless portable information terminal device shown in FIG.

The power supply 110 of the apparatus is turned on by the user.
When the state is set (step S1), the OS stored in the storage device 140 is expanded in the RAM 170, and operation confirmation and initial setting of the device are performed (step S2).

The processing detecting section 185 is periodically activated until the power supply 110 of the apparatus is turned off by the user or the input from the user is stopped for a certain time. Then, the content of the processing being performed in each processing unit and the presence or absence of the processing are detected (step S15), and based on the detection result, the main CPU 150 is requested to switch the operating state, and the operating state of the main CPU 150 is switched. When it is received, the remaining battery level detection unit 162 is notified of that fact.

After the initial setting, the request processing unit 186 starts up,
A start notification of power supply voltage detection is issued to the process detection unit 185 (step S5).

At this time, no command for switching the operation state is issued from the processing detection unit 185 to the main CPU 150, and the operation state is fixed to the current operation state (step S6).

After issuing the start notification, the request processing unit 186 issues a power supply voltage detection request to the power supply voltage detection unit 161 (step S7).

When the power supply voltage detection section 161 receives the power supply voltage detection request, the power supply voltage is detected (step S8). When the detection is completed, the processing detection section 13 notifies that the power supply voltage detection has been completed. (Step S9).

When the process detector 185 receives the notification from the power supply voltage detector 161, the operation state is released from being fixed (step S 10).

In the remaining battery level detecting section 162,
The discharge data table corresponding to the operation state is read (step S11), the remaining battery level is detected from the discharge data and the power supply voltage value (step S12), and the remaining battery level is displayed on the display device 130 (step S12). S13).

Next, a cycle at which a power supply voltage detection request is made is detected (step S12), and the request processing unit 186 is notified of a cycle at which a detection request is made.

The request processing unit 186 sets a timer for activating itself next in accordance with the notified cycle (step S14).

In parallel with the power supply voltage detection processing performed via the sub CPU 160, the main CPU 160 starts an application program.

The display processing unit 12 causes the display device 130
Displays an application screen, waits for an input from the user, and if there is an input, enters a normal processing state of performing processing using the input processing unit 181, the data conversion processing unit 182, and the data storage processing unit 183. (Step S4).

If the power of the apparatus is turned off by the user or if there is no input from the user for a certain period of time (step S15), the processing detection unit 131 sends the main CPU
An operation state switching request is issued to 50, and the operation state transitions to the operation state with the smallest power consumption (step S16).
Also in this state, the request processing unit 186 is started by the set timer and repeats the process of detecting the power supply voltage.

Table 1 below shows, more specifically, the operating states used in the wireless portable information terminal according to the first embodiment of the present invention, as shown in FIG.

[0052]

[Table 1] In Table 1 above, the operation state 1 is the main CPU 150
Is the fastest and the clock is supplied to all peripheral circuits related to the device. The operation state 2 is a state in which the processing clock of the main CPU 150 is delayed from the operation state 1 by about 1/4 to 1/32. The operation state 3 is a state in which the processing clock of the main CPU 150 and the clock supplied to the unused peripheral circuits are stopped. further,
The operation state 4 is a state in which the clock supplied to all circuits except the RTC timer is stopped, the display device 130 is turned off, and the RAM 170 is set in the self-refresh mode.

The concept of transition of the operation state of the wireless portable information terminal shown in FIG. 3 will be described below.

FIG. 5 is a diagram for explaining the concept of transition of the operation state of the wireless portable information terminal device shown in FIG.

Referring to FIG. 5, it is assumed that the first operation state when the power is turned on is 1.

First, a timer that is cleared by an input from the user is set. In operation state 1, if you do not want to disturb the communication state due to noise from the clock,
An instruction is issued to the main CPU 150 to switch to the operation state 2. If there is no process to be performed by the main CPU 150 in the operation state 1 or the operation state 2, the main CPU 150 is switched to the operation state 3.
Issue an instruction to

When an interrupt is generated by the timer set by the above-described operation, it is checked whether or not there is a process to be performed by the main CPU 150. If there is no process, an instruction is issued to the main CPU 150 to switch to the operation state 3. . When the user inputs data from the pen or keyboard, or when the set timer
When an interrupt occurs to the PU 150, the main CPU
150 automatically changes to the operating state 1.

Table 2 below shows an example of a discharge data table according to the operation state used in the wireless portable information terminal device according to the embodiment of the present invention.

[0059]

[Table 2] In Table 2, the remaining battery level and the cycle for requesting the next detection (indicated by () in the table) are determined based on the operation mode and the detected battery voltage value. In this example, five battery remaining levels are used. Level 5 is the discharge capacity of 0 to 20%, level 4 is the discharge capacity of 20 to 40%, and level 3 is 40 to 6 in the example of the discharge characteristics of the battery shown in FIG.
0% discharge capacity, level 2 is 60-80% discharge capacity,
Level 1 indicates a state of a discharge capacity of 80 to 100%, respectively. The discharge capacity indicates how much electricity is used for the total capacity of the battery.

FIG. 6 is a graph showing an example of the discharge characteristics of a battery used as a power supply.

(Second Embodiment) FIG. 7 is a block diagram showing a configuration of a wireless portable information terminal device according to a second embodiment of the present invention.

In the present embodiment, as shown in FIG.
A wireless portable terminal unit 202 for transmitting and receiving wirelessly to and from
A mobile information processing terminal unit 201 that receives and processes an input from a user, stores the processed data, and transmits and receives data to and from another terminal. A transmission / reception processing unit 298 having a unit for performing transmission / reception and a signal processing unit 299 for converting a received signal into data or transmitting data into a signal are processed through the CPU 296 and the RAM 297. The portable information processing terminal unit 201 includes a power supply 210, a sub CPU 260, an input device 220,
Display device 230, storage device 240, wired transmission / reception device 290, wireless transmission / reception device 291, main CPU 25
0, RAM 270, and ROM 280 are connected to common data and bus lines, respectively.

The ROM 280 includes an input processing unit 281, a data conversion processing unit 282, a data storage processing unit 283, a display processing unit 284, a request processing unit 286, a transmission / reception processing unit 288, and a power control processing unit 289. Is developed in the RAM 270 during operation and performs necessary processing. The sub CPU 260 includes a power supply voltage detection unit 261 and a remaining battery level detection unit 262. Here, the power supply 210
Is made of a portable material such as a battery.

The input processing section 281 forms an input processing means for receiving data input from the input device 220 such as a pen or a keyboard.

The data conversion processing section 282 constitutes a data conversion means for converting input data into data receivable by a program such as an address book or a scheduler.

The data storage processing unit 283 constitutes a data storage unit for storing data created on a program or received data.

The storage device 240 actually holds the data from the data storage means.

The display processing section 284 forms a display means for displaying programs and data on a display device.

The display device 230 actually displays data.

The transmission / reception processing unit 288 serves as a transmission / reception means for transmitting the created data or the held data to another terminal or receiving data from another terminal.

The wired transmitting / receiving device 290 and the wireless transmitting / receiving device 291 actually transmit and receive data.

The power supply control processing unit 289 turns ON / OFF the power supply to the circuits (hereinafter, peripheral circuits) related to each device.
Switch means for controlling OFF, and ON / O of the power supply
It comprises a peripheral operation change notification means for notifying the battery remaining level detection unit 262 that the FF has been switched.

The power supply voltage detecting section 261 forms a power supply voltage detecting means for detecting a power supply voltage.

The remaining battery level detecting section 262 detects the remaining battery level from the power supply voltage value detected by the power supply voltage detecting means and a discharge data table according to the presence or absence of operation of peripheral circuits. A detection request period detecting unit for detecting a period for performing a power supply voltage detection request, a detection request period notifying unit for notifying a process detection unit of a period for performing a detection request, and displaying the remaining battery level on the display device 230. Battery level display means.

The sub CPU 260 is connected to the power supply voltage detector 26
It mediates between 0 and the processing performed by the remaining battery level detection unit 262.

The request detection section 286 constitutes a power supply voltage detection request means for making a power supply voltage detection request at a set cycle.

The above-described processing units and devices are provided in the RAM 270
And the main CPU 250.

Hereinafter, the operation of the wireless portable information terminal device configured as described above will be described.

FIG. 8 is a flowchart for explaining the operation of the wireless portable information terminal device shown in FIG.

When the power of the apparatus is turned on by the user (step S21), the OS stored in the ROM 280 is expanded in the RAM 270, and the operation of the apparatus is checked and the initial setting is performed (step S22).

The request detecting section 286 is activated and issues a battery voltage detecting request to the power supply voltage detecting section 261 (step S25).

The power supply voltage detector 261 detects the power supply voltage upon receiving the power supply voltage detection request (step S2).
6).

The remaining battery level detector 262 reads the discharge data table according to the presence or absence of the operation of the peripheral circuit (step S27), and detects the remaining battery level from the discharge data and the power supply voltage value (step S28). Then, the detected remaining battery level is displayed on the display device 230.

Next, a cycle at which a power supply voltage detection request is made is detected (step S28), and the request detection unit 286 is notified of the cycle at which the detection request is made.

The request detecting unit 286 sets a timer for activating itself next according to the notified cycle.

In parallel with the power supply voltage detection processing performed through the sub CPU 260, the main CPU 250 starts an application program.

The display processing section 284 displays the application screen on the display device 230, waits for an input from the user, and if there is an input, enters a normal processing state for performing processing (step S23). In this state, the power control processing unit 289
The on / off of the power supply to the peripheral circuit is controlled, and when the on / off of the power is switched, the battery remaining level detection unit 262 is notified of that fact. Request detector 2
86 is started by the set timer and repeats the process of detecting the power supply voltage.

(Third Embodiment) FIG. 9 is a block diagram showing a configuration of a wireless portable information terminal device according to a third embodiment of the present invention.

In the present embodiment, as shown in FIG.
A wireless portable terminal unit 302 that wirelessly transmits and receives
The portable information processing terminal unit 301 receives and processes input from a user, stores the processed data, and transmits / receives data to / from another terminal. A transmission / reception processing unit 398 having a unit for performing transmission / reception and a signal processing unit 399 for converting a received signal into data or transmitting data into a signal are processed through the CPU 396 and the RAM 397. The portable information processing terminal unit 201 includes a power supply 310, a sub CPU 360, an input device 320,
The display device 330, the storage device 340, the wired transmitting / receiving device 390, the wireless transmitting / receiving device 391, and the main CPU 35
0, RAM 370, and ROM 380 are connected to common data and bus lines, respectively.

The ROM 380 includes an input processing section 381, a data conversion processing section 382, a data storage processing section 383, a display processing section 384, a processing detection section 384, a processing detection section 385, a request detection section 386, a transmission / reception processing section 388, and a power supply control section. A processing unit 389 is provided, and each processing unit is developed in the RAM 370 during operation and performs necessary processing.

The sub CPU 360 includes a power supply voltage detecting section 361 and a remaining battery level detecting section 362.
Here, the power supply 310 is made of a portable device such as a battery.

[0092] The input processing unit 381 forms input processing means for receiving data input from the input device 320 such as a pen or a keyboard.

[0093] The data conversion processing unit 382 constitutes a data conversion means for converting the input data into data receivable by a program such as an address book or a scheduler.

The data storage processing unit 383 serves as a data storage unit for storing data created on a program or received data.

The storage device 340 actually holds the data from the data storage means.

[0096] The display processing section 384 constitutes display means for displaying programs and data on a display device.

The display device 330 actually displays data.

[0098] The transmission / reception processing unit 388 serves as a transmission / reception means for transmitting created data or retained data to another terminal or receiving data from another terminal.

The wired transmission / reception device 390 and the wireless transmission / reception device 391 actually transmit / receive data.

The power control processing unit 389 includes a switch unit for controlling ON / OFF of power supplied to the peripheral circuit, and a peripheral operation for notifying the battery remaining level detecting unit 362 that the power has been switched ON / OFF. And change notification means.

The processing detecting section 385 includes a processing content detecting means for detecting the content of the processing performed by each processing section and the presence or absence of the processing, and an operating state for requesting the main CPU 350 to switch the operating state based on the detection result. Switching request means;
The switching of the operation state indicates that the remaining battery level is detected.
2 and an operation state fixing means for keeping the operation state constant when the power supply voltage is detected.

The main CPU 350 includes a process detection unit 385
Operating state switching means for switching the operating state in accordance with an instruction from the CPU.

The power supply voltage detecting section 361 comprises a power supply voltage detecting means for detecting the power supply voltage, and a power supply voltage detection completion notifying means for notifying the request detecting section 386 that the detection of the power supply voltage has been completed.

The remaining battery level detecting section 362 detects the detected power supply voltage value and turns on / off the power supply to peripheral circuits.
Battery level detecting means for detecting the remaining battery level from the discharge table according to the operating state, a detection request cycle detecting means for detecting a cycle for making a power supply voltage detection request, and processing detection for a cycle for making a detection request It comprises a detection request period notifying unit for notifying the unit 385 and a remaining battery level display unit for displaying the remaining battery level on the display device 330.

The sub CPU 360 is connected to the power supply voltage detector 36
1 and the process performed by the remaining battery level detection unit 362.

The request detection section 386 constitutes a power supply voltage detection request means for making a power supply voltage detection request at a set cycle.

The above-described processing units and devices are provided in the RAM 370
And the main CPU 350.

Hereinafter, the operation of the wireless portable information terminal device configured as described above will be described.

FIG. 10 is a flowchart for explaining the operation of the wireless portable information terminal device shown in FIG.

The user turns on the power supply 310 of the terminal.
When the state is set (step S41), the OS stored in the ROM 380 is expanded in the RAM 370, and the operation check and initial setting of the apparatus are performed (step S42).

The process detection unit 385 is started periodically until the user turns off the power supply 310 of the terminal or until there is no input from the user for a certain period of time.

Then, the content of the processing being performed in each processing unit and the presence or absence of the processing are detected (step S54), and based on the detection result, a request is made to the main CPU 350 to switch the operating state, and the main CPU 350 operates. When the state is switched, the state is notified to the remaining battery level detection unit 362.

After the initial setting, the request processing unit 386 starts up,
The power supply voltage detection start notification is issued to the process detection unit 385 (step S45).

At this time, the processing detection unit 385 sets the main CP
The command for switching the operation state is not issued to U350, and the current operation state is fixed (step S4).
6).

Further, after issuing the start notification, the request detector 386 issues a power supply voltage detection request to the power supply voltage detector 361 (step S47).

Upon receiving the request, the power supply voltage detector 361 detects the power supply voltage (step S48), and when the detection is completed, notifies the processing detector 385 that the power supply voltage detection has been completed (step S48). S49).

When the process detection unit 385 receives the notification,
The fixed operation state is released (step S50).

The remaining battery level detection unit 362 reads a discharge data table corresponding to the presence / absence of the operation of the peripheral circuit and the operating state (step S51), and detects the remaining battery level from the discharge data and the power supply voltage value (step S51). Step S52), the remaining battery level is displayed on the display device 330.

Next, a cycle at which a power supply voltage detection request is made is detected (step S52), and the request detection unit 386 is notified of the cycle at which the detection request is made.

The request detecting section 386 sets a timer for activating itself next according to the notified cycle (step S53).

In parallel with the power supply voltage detection processing performed through the sub CPU 360, the main CPU 350 starts an application program.

The display processing unit 384 displays an application screen on the display device 330, waits for an input from the user, and if there is an input, uses the input processing unit 381, the data conversion processing unit 382, and the data storage processing unit 383. Then, the process enters a normal processing state for performing the process (step S43).

In this state, the power control processing unit 389 controls ON / OFF of the power supplied to the peripheral circuit, and when the power is switched ON / OFF, the power control processing unit 389 notifies the battery remaining level detecting unit 362 to that effect. Notify.

When the user turns off the power supply 310 of the terminal or when there is no input from the user for a certain period of time (step S54), the processing detection unit 385 issues an operation state switching request to the main CPU 350, and A transition is made to an operation state with a small amount (step S55). Also in this state, the request detection unit 386 is started by the set timer and repeats the process of detecting the power supply voltage.

(Fourth Embodiment) In this embodiment, when the request detector shown in the third embodiment switches ON / OFF of the peripheral circuit while detecting the power supply voltage, the power supply voltage is detected again. The required re-power supply voltage detecting means is added.

The operation of this embodiment will be described below.

FIG. 11 is a flowchart for explaining the operation of the wireless portable information terminal device shown in FIG. 9 as a fourth embodiment.

Input processing section 381, data conversion processing section 38
When performing normal processing using the data storage processing unit 383 and the data storage processing unit 383 (step S61), first, the request detection unit 38
6, when started by the set timer, issues a start notification of power supply voltage detection to the process detection unit 385 (step S63).

Upon receiving the notification, the process detection unit 385 does not issue an instruction to switch the operation state to the main CPU 350, and fixes the current operation state (step S64).

The request detecting section 386 acquires the ON / OFF state of the peripheral circuit at that time from the power supply control processing section 389, and holds the acquired state in the RAM 370 (step S6).
7).

The request detection section 386 issues a power supply voltage detection request to the power supply voltage detection section 361 (step S65).

Upon receiving the request, the power supply voltage detector 361 detects the power supply voltage (step S66), and notifies the processing detector that the detection of the power supply voltage has been completed (step S69).

Upon receiving the notification, the process detection unit 385
The operation state is released from being fixed (step S70).

The remaining battery level detecting section 362 reads the discharge data table according to the operating state and whether or not the peripheral circuit is operating (step S71), and detects the remaining battery level from the discharge data and the power supply voltage value (step S71). Step S72).

Subsequently, a cycle at which a power supply voltage detection request is made is detected (step S73), and the request detection unit 386 is notified of the remaining battery level and a cycle at which the detection request is made (step S73).
73).

When the request detection unit 386 receives the notification,
ON / O of peripheral circuits at that time from power supply control processing unit 389
After acquiring the state of the FF and detecting the power supply voltage, it is confirmed whether or not the power supply to the peripheral circuit has been switched on / off before the cycle of performing the detection request is notified (step S74).

In the case of switching, the received remaining battery level is discarded, a start notification of power supply voltage detection is issued (step S63), and a battery voltage detection request is reissued.

On the other hand, if not switched, the received remaining battery level is displayed on the display device 330 (step S75), and a timer for activating itself is set in accordance with the notified cycle. Thereafter, the apparatus returns to the normal processing state.

(Fifth Embodiment) In the present embodiment, when the processing detector 385 shown in the third embodiment is requested by the user to turn off the apparatus during the detection of the power supply voltage. A battery remaining amount display end notification requesting unit for requesting the request detecting unit 386 to notify the end of the battery remaining amount display, and an operation state to the main CPU 350 when the battery remaining amount display end notification is received. An operation state switching means for issuing a switching request and transitioning to an operation state with the smallest power consumption is added.

The operation of this embodiment will be described below.

FIG. 12 is a flowchart for explaining the operation of the wireless portable information terminal device shown in FIG. 9 as a fifth embodiment.

Input processing section 381, data conversion processing section 38
2 and the normal processing using the data storage processing unit 382 (step S81), first, the request detection unit 38
6 is started by the set timer (step S
82), a start notification of power supply voltage detection is issued to the process detection unit 385 (step S83).

When receiving the request, the power supply voltage detecting section 361 detects the power supply voltage (step S86).

At this time, the user turns off the power of the apparatus.
When requested to be in the state, the process detection unit 385 displays the remaining battery level to the request detection unit 386,
A request is made to notify that the battery level display has ended (step S87).

When the detection is completed, the power supply voltage detecting section 361 notifies the processing detecting section 385 that the detection of the power supply voltage has been completed.
(Step S88).

Upon receiving the notification, the process detection unit 385 releases the fixation of the operation state (step S89).

The remaining battery level detection unit 362 reads a discharge data table corresponding to the presence / absence of operation of the peripheral circuit and the operation state (step S90), and detects the remaining battery level from the discharge data and the power supply voltage value (step S90). In step S91, the remaining battery level is displayed on the display device 330 (step S91).
93).

Next, a cycle at which a power supply voltage detection request is made is detected (step S92), and the request detection unit 386 is notified of the cycle at which the request is made.

The request detection unit 386 sets a timer for activating itself next according to the notified cycle. After that, the processing detection unit 385 is notified that the display of the remaining battery level has ended (step S94).

Upon receiving the notification, the processing detection unit 385 issues an operation state switching request to the main CPU 350, and
A transition is made to the operation state with the smallest power consumption (step S95).

In this state (step S96),
The request detection unit 386 is activated by the set timer (step S92), and repeats the process of detecting the power supply voltage.

[0152]

Since the present invention is constructed as described above, it has the following effects.

(1) Since it is not necessary to consume unnecessary power to detect the battery voltage, the use time of the terminal device can be extended.

(2) Since the battery voltage level can be accurately detected, it is possible to prevent a malfunction of the terminal device due to a drop in the power supply voltage, thereby preventing the destruction of data and programs accumulated due to the malfunction. be able to.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one configuration example of a system to which a wireless portable information terminal device of the present invention is applied.

FIG. 2 is a diagram for explaining an operation state with respect to power consumption in the wireless portable information terminal device of the present invention.

FIG. 3 is a block diagram illustrating a configuration of a wireless portable information terminal device according to a first embodiment of the present invention.

FIG. 4 is a flowchart for explaining an operation of the wireless portable information terminal device shown in FIG. 3;

FIG. 5 is a diagram for explaining a concept of transition of an operation state of the wireless portable information terminal device shown in FIG. 3;

FIG. 6 is a graph showing an example of a discharge characteristic of a battery used as a power supply.

FIG. 7 is a block diagram showing a configuration of a second embodiment of the wireless portable information terminal device of the present invention.

FIG. 8 is a flowchart for explaining the operation of the wireless portable information terminal device shown in FIG. 7;

FIG. 9 is a block diagram showing a configuration of a wireless portable information terminal device according to a third embodiment of the present invention.

FIG. 10 is a flowchart for explaining the operation of the wireless portable information terminal device shown in FIG. 9;

FIG. 11 is a flowchart for explaining the operation of the wireless portable information terminal device shown in FIG. 9 as a fourth embodiment.

FIG. 12 is a flowchart for explaining an operation of the wireless portable information terminal device shown in FIG. 9 as a fifth embodiment.

FIG. 13 is a block diagram showing a configuration of a wireless portable information terminal device disclosed in Japanese Patent Application Laid-Open No. 60-251416.

FIG. 14 is a block diagram showing a configuration of a wireless portable information terminal device proposed in Japanese Patent Application No. 8-320132.

[Description of Signs] 10 Input device 20 PC 30, 203, 303 Base station 40 Network 50 Center 60 Telephone 100, 100a Terminal 110, 120, 210, 310 Power supply 130, 230, 330 Display device 140, 240, 340 Storage device 150, 250, 350 Main CPU 160, 260, 360 Sub CPU 161, 261, 361 Power supply voltage detector 162, 262, 362 Battery level detector 170, 270, 297, 370, 397 RAM 180, 280, 380 ROM 181, 281, 381 Input processing unit 182, 282, 382 Data conversion processing unit 183, 283, 383 Data storage processing unit 184, 284, 384 Display processing unit 185, 285, 385 Processing detection unit 186 Request processing unit 201, 301 Mobile Information processing end End 202, 302 Wireless portable terminal 286, 386 Request detection unit 288, 297, 388, 397 Transmission / reception processing unit 289, 389 Power supply control processing unit 290, 390 Wired transmission / reception device 291, 391 Wireless transmission / reception device 296, 396 CPU 299, 399 Signal processing unit

Claims (10)

[Claims] 1. A wireless portable terminal unit having communication control means for wirelessly transmitting and receiving data to and from a base station, an input processing means for receiving and processing an input from a user, and a data storage means for storing processed data. Operating state switching means for switching to any one of operating states in which the amount of power supplied to the terminal apparatus is different from one another in a wireless portable information terminal apparatus having a portable information processing terminal unit that uses a battery as a power supply. Power supply voltage detection means for detecting a power supply voltage of the power supply, wherein when the power supply voltage detection means detects a power supply voltage from a user, the operation state switching means changes the operation state. A wireless portable information terminal device characterized by switching. 2. The wireless portable information terminal according to claim 1, further comprising an operation state fixing unit that keeps the operation state constant when the power supply voltage is detected. apparatus. 3. The wireless portable information terminal device according to claim 1, further comprising a power supply voltage re-detection requesting means for detecting a power supply voltage again when the presence or absence of an operation of a peripheral circuit changes upon detection of the power supply voltage. A wireless personal digital assistant device characterized by the above-mentioned. 4. The wireless portable information terminal device according to claim 2, further comprising a remaining battery level detecting means for detecting a remaining battery level from a power supply voltage value detected by said power supply voltage detecting means. A wireless portable information terminal device characterized by the following. 5. The wireless portable information terminal device according to claim 4, wherein said remaining battery level detecting means determines the detected power supply voltage value, discharge data according to an operation state, and presence / absence of a peripheral circuit. A wireless portable information terminal device for detecting a remaining battery level from at least one of discharge data. 6. The wireless portable information terminal device according to claim 5, wherein the remaining battery level detecting means determines the detected power supply voltage value, discharge data according to an operation state, and presence / absence of a peripheral circuit. A wireless portable information terminal device, comprising: a power supply voltage detection cycle setting unit that sets a cycle for performing the power supply voltage detection request from at least one of the discharge data. 7. The wireless portable information terminal device according to claim 6, further comprising an operation state switching notifying unit that notifies the remaining battery level detecting unit that the operating state has been switched. Wireless personal digital assistant. 8. The wireless portable information terminal device according to claim 7, further comprising a peripheral operation change notification unit that notifies the remaining battery level detection unit that the presence or absence of the operation of the peripheral circuit has changed. A wireless portable information terminal device characterized by the above-mentioned. 9. The wireless portable information terminal device according to claim 7, further comprising a remaining battery level display unit for displaying the remaining battery level. 10. The wireless portable information terminal device according to claim 9, further comprising a first and a second processing unit, wherein the first processing unit includes the input processing unit, the data storage unit, The operating state switching means, the operating state fixing means, the power supply voltage re-detection requesting means, the operating state switching notifying means, and the peripheral operation change notifying means; A wireless portable information terminal device comprising the battery remaining level detecting means and the battery remaining level displaying means.