JP2003169426A - Data processing device and program thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To set an operation quaranteeing time from the time of the occurrence of a momentary power failure to a power failure process in accordance with a consumed current at the time of the occurrence of the momentary power failure and with a power supplying state to each functional block, in a data processing device that has an auxiliary power supply that supplies electric power when the momentary power interruption of a main power supply occurs. <P>SOLUTION: When the power supply from the main power supply 8 is interrupted, a CPU 1 obtains the present consumed current value detected by a current detecting part 11, and obtains a timer value corresponding to the so- obtained consumed current value from a current value table 51 stored in a storage device 5 to set the value to a timer 10. Unless the power supply from the main power supply 8 is restored even after the counting by the timer 10 is finished, the CPU 1 shifts to a power failure process. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data processing device having an auxiliary power supply for supplying power when the main power supply is momentarily interrupted,
And its programs.

[0002]

2. Description of the Related Art In a mobile terminal such as a mobile phone or a PDA, when a shock such as a drop occurs, a battery (main power supply) installed in the device and a battery spring may separate from each other to cause an instantaneous power failure. . At this time, the operating voltage is guaranteed for a certain period of time by holding the potential with a capacitor (auxiliary power supply) provided in the device so that the operation of the entire device does not stop. Move to.

[0003]

However, in the conventional portable terminal, the operation guarantee time from the momentary power failure to the power failure state is calculated based on the maximum current value assumed in the system. When not operating at the maximum current, there was a problem that the operation time was shortened due to a transition to a power failure state although the operation was still possible.

An object of the present invention is, in a data processing device having an auxiliary power supply for supplying power during an instantaneous power failure of a main power supply, the operation guarantee time from the occurrence of the instantaneous power failure to the power failure processing, the consumption current at the time of the instantaneous power failure, and the , According to the state of power supply to each functional block.

[0005]

The invention according to claim 1 is
A data processing device having an auxiliary power supply for supplying power when an instantaneous power failure of the main power source occurs, the current measuring means for measuring the current consumption value at the time of the instantaneous power failure, and the current measuring means. Setting means for setting a time for guaranteeing the operating voltage by the power supply from the auxiliary power source according to the current consumption value, time measuring means for measuring the operation guaranteed time set by the setting means, and time counting by the time measuring means If the momentary power failure does not recover by the end of, the power failure processing means for performing power failure processing is provided.

According to the first aspect of the invention, when the current consumption value is small, the time for guaranteeing the operating voltage by the power supply from the auxiliary power supply is set in accordance with the current consumption value at the momentary power failure. The operation guarantee time can be set to be long, and even if an instantaneous power failure occurs, the degree of power failure processing is reduced, and unnecessary power failure processing as in the conventional case can be prevented.

According to a third aspect of the present invention, there is provided a data processing device having a plurality of functional blocks and an auxiliary power supply for supplying power when an instantaneous power failure of the main power source occurs. Setting means for detecting a power supply state for each block, and setting a time period for guaranteeing an operating voltage by the power supply from the auxiliary power source according to the power supply state for each block detected by the detection means Means, a clocking means for clocking the operation guarantee time set by the setting means, and a power failure processing means for performing a power failure process if the instantaneous power failure is not recovered by the time the time counting by the time measuring means ends, It is characterized by having.

According to the third aspect of the present invention, the power supply is set by setting the time for guaranteeing the operating voltage by the power supply from the auxiliary power supply according to the power supply state to each functional block at the moment of a momentary power failure. If the number of supplied functional blocks is small, the guaranteed operation time can be set longer, and even if a momentary power failure occurs, the degree of power failure processing will be reduced to eliminate unnecessary power failure processing as in the past. Can be prevented.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

[First Embodiment] FIGS. 1 to 3 are views for explaining a first embodiment of the present invention. First, the configuration will be described.

FIG. 1 is a diagram showing an internal configuration of a mobile terminal 100 to which the first embodiment of the present invention is applied. As shown in FIG. 1, the mobile terminal 100 includes a CPU 1, a display unit 2,
The input unit 3, the RAM 4, the storage device 5, the voltage detection unit 6, the power supply control unit 7, the main power supply 8, the auxiliary power supply 9, the timer 10, and the current detection unit 11 are configured, and each unit is connected by the bus 12. .

CPU (Central Processing Unit) 1
Reads out various application programs stored in the storage device 5, develops them in a program storage area (not shown) in the RAM 4, executes various processes based on these programs, and outputs the processing results to a work area (not shown) in the RAM 4. ) And temporarily display it on the display unit 2. The CPU 1 further stores the processing result in the designated storage destination in the storage device 5 based on the instruction signal input from the input unit 3.

Specifically, the CPU 1 executes an instantaneous power failure detection process (see FIG. 3) in which the timer 10 sets the operation guarantee time until the power failure process in accordance with the current consumption at the time of the instantaneous power failure detection.

The display unit 2 is an LCD (Liquid Crystal Display).
play) etc., and performs display processing according to a display signal input from the CPU 1.

The input unit 3 has a ten-key pad and various function keys.
Output to.

A RAM (Random Access Memory) 4 is a C
The processing program and various application programs executed by the PU 1 are expanded in a program storage area (not shown) in the RAM 4, and input instructions, input data, processing results generated when the processing program is executed, etc. are illustrated. Not stored temporarily in the work area.

The storage device 5 is pre-stored with programs, data and the like, and has a structure including a recording medium readable by the CPU 1, such as a magnetic or optical recording medium or a semiconductor memory. This recording medium is a CD-ROM,
Includes portable media such as memory cards and fixed media such as hard disks. In addition, some or all of programs, data, and the like stored in this recording medium are transferred from a server or client to a WAN (Wide Area Network) or LA.
It may be configured to receive from a transmission control unit (not shown) via a network such as N (Local Area Network),
Further, the recording medium may be a recording medium of a server or a client constructed on the network.

The storage device 5 stores various application programs corresponding to the mobile terminal 100, an instantaneous power failure detection processing program, and data processed by each processing program.

Further, the storage device 5 has a current value table 51 which stores, for each current consumption value at the time of momentary power failure, a guaranteed operation time from the occurrence of the momentary power failure to the power failure processing. As shown in FIG. 2, the current value table 51 stores both “current value” and “timer value” items in association with each other. As the “current value”, the current consumption value at the moment of a momentary power failure occurs The “timer value” is stored as the operation guarantee time set in the timer 10 at the moment of a power failure, and the longest time that can be backed up by the auxiliary power supply 9 for each current consumption value. In the current value table 51 of FIG. 2, the smaller the current consumption at the time of the momentary power failure, the smaller the timer value.
The set value is stored so that (Operation guaranteed time) becomes longer. That is, the longer operation guarantee time is set in the timer 10 as the current consumption value decreases.

When the output voltage from the main power source 8 drops below a predetermined value, the voltage detecting section 6 outputs a detection signal indicating the interruption of the main power source 8 to the CPU 1.

The power supply control unit 7 controls the voltage supplied from the main power supply 8 to a predetermined voltage and supplies it to each unit of the mobile terminal 100. In addition, the power supply control unit 7 converts the voltage discharged from the auxiliary power supply 9 into a voltage commensurate with the current consumption value at the time of the momentary power failure at the time of the momentary power failure, and supplies the voltage to each unit for the time set in the timer 10. I do.

The main power source 8 is composed of a battery such as a dry battery or a secondary battery, and is a power source for supplying power to each part of the mobile terminal 100. The main power supply 8 takes in the power supply voltage of the battery by mechanically bringing the electrode terminals (battery springs) into mechanical contact with a battery such as a dry battery or a secondary battery. The electrical connection with the terminal is momentarily cut off, resulting in a momentary power failure.

The auxiliary power supply 9 is composed of a large-capacity capacitor or the like and is a backup power supply at the time of momentary power failure. When the main power supply 8 is equipped with a battery, it is charged by the control of the power supply control unit 7 and at the time of momentary power failure. Discharge.

The timer 10 sets a timer value designated by the CPU 1, measures the elapsed time from the time when the timer value is set, and when the elapsed time reaches the timer value, outputs a timing end signal to the CPU 1. To do. That is, the timer 10 counts an operation guarantee time in which the operating voltage from the occurrence of the instantaneous power failure to the power failure processing can be guaranteed by the power supply from the auxiliary power supply 9.

The current detector 11 detects the current consumption of the entire mobile terminal 100 and outputs it to the CPU 1. That is, the current detector 11 measures the current consumption value of the entire mobile terminal 100 when an instantaneous power failure occurs.

Next, the operation of the first embodiment will be described. FIG. 3 is a flowchart for explaining the operation of the first embodiment according to the present invention. This flowchart is for explaining a program for causing a computer constituting the portable terminal 100 of the present invention to realize each function. This program is described as an example in which it is stored in the recording medium in the form of a program code that can be read by the CPU 1. However, it is not necessary to store all the functions in the recording medium, and some or all of the functions may be stored as necessary. It may be realized by receiving from a transmission control unit (not shown) via a communication network.

With reference to FIG. 3, the instantaneous power failure detection processing executed in the mobile terminal 100 will be described.

The output voltage of the main power source 8 becomes a predetermined value or less,
When a detection signal indicating interruption of the main power supply 8 is input from the voltage detection unit 6, the CPU 1 determines that an instantaneous power failure has occurred (step S1; YES), and the current consumption value detected by the current detection unit 11 Is acquired (step S2).

Next, the CPU 1 acquires a timer value corresponding to the current consumption value acquired in step S2 from the current value table 51 stored in the storage device 5 (step S3), and stores this timer value in the timer 10. Set (step S4).

If the power supply by the main power source 8 is restored before the time counting by the timer 10 is finished (step S5; NO) (step S6; YES), the CPU 1 finishes the time counting by the timer 10 and returns to step S1. Again, the signal input from the voltage detection unit 6 is awaited again.

If the power supply from the main power supply 8 is not yet restored during the time counting by the timer 10 (step S6; N).
O), the CPU 1 continues the time measurement, and if the power supply from the main power supply 8 is not restored even after the time measurement by the timer 10 is finished (step S5; YES), the CPU 1 shifts to the power outage process.

As described above, according to the portable terminal 100 of the first embodiment, the timer 10 is the longest time during which the auxiliary power supply 9 can be backed up to the timer 10 according to the current consumption value at the momentary power failure. By setting a value, if the current consumption during an instantaneous power failure is small, the time until power failure processing is extended (long operation guarantee time is set), so useless power failure processing as in the past is performed. Can be prevented.

[Second Embodiment] The second embodiment of the present invention will be described below.
Embodiments will be described with reference to FIGS. 4 to 6. First, the configuration will be described.

FIG. 4 is a block diagram showing the internal structure of the portable terminal 200 according to the second embodiment. In FIG. 4, the same components as those of the mobile terminal 100 shown in FIG. 1 in the first embodiment are designated by the same reference numerals, and when they have the same function, the functional description thereof will be omitted.

As shown in FIG. 4, the portable terminal 200 has a C
PU1, display unit 2, input unit 3, RAM 4, storage device 5,
Voltage detection unit 6, power supply control unit 7, main power supply 8, auxiliary power supply 9,
Timer 10, power supply control state detection unit 20, USB unit 21,
The IrDA unit 22 and the wireless unit 23 are provided, and each unit is connected by the bus 12.

The CPU 1 reads various application programs stored in the storage device 5 and stores them in the RAM 4
The program is expanded in a program storage area (not shown) inside, various processings based on these programs are executed, and the processing result is R
The data is temporarily stored in a work area (not shown) in the AM 4 and displayed on the display unit 2. The CPU 1 further stores the processing result in the designated storage destination in the storage device 5 based on the instruction signal input from the input unit 3.

Specifically, the CPU 1 executes an instantaneous power failure detection process (see FIG. 6) for setting the operation guaranteed time until the power failure process in the timer 10 according to the power supply state at the moment of the power failure. In addition, the CPU 1 is a setting unit according to claim 3,
It has a function as a power failure processing means.

The storage device 5 is pre-stored with programs, data and the like, and has a structure including a recording medium readable by the CPU 1, such as a magnetic or optical recording medium or a semiconductor memory. This recording medium is a CD-ROM,
Includes portable media such as memory cards and fixed media such as hard disks. Further, a part or all of the programs, data, and the like stored in this recording medium may be received from a transmission control unit (not shown) from a server or client via a network such as WAN or LAN. The medium may be a recording medium of a server or a client constructed on the network.

The storage device 5 stores various application programs corresponding to the mobile terminal 200, an instantaneous power failure detection processing program, data processed by each processing program, and the like.

The storage device 5 is also provided with functional blocks (USB unit 21, IrDA unit 22, wireless unit 2) at the time of momentary power failure.
It has a current value table 52 that stores the operation guarantee time from the momentary power failure to the power failure processing for each power supply state to 3). In addition, each functional block (USB unit 21, IrDA
The power consumption of the unit 22 and the wireless unit 23) is equal.

As shown in FIG. 5, the current value table 52 stores both items of "power supply state" and "timer value" in association with each other. The number of functional blocks consumed is stored, and as the "timer value", the operation guaranteed time set in the timer 10 at the moment of a power outage is backed up by the auxiliary power supply 9 for each number of blocks consumed at the moment of a power outage. Remembers the longest possible time. Current value table 52 of FIG.
Then, the set value is stored such that the timer value becomes longer as the number of function blocks consuming power at the time of the instantaneous power failure is smaller. That is, the longer operation guarantee time is set in the timer 10 as the number of functional blocks to which power is supplied decreases.

The timer 10 sets the timer value designated by the CPU 1, measures the elapsed time from the time when the timer value is set, and when the elapsed time reaches the timer value, outputs a timing end signal to the CPU 1. To do. The timer 10 has a function as a time measuring unit according to the third aspect.

The power supply control state detecting section 20 includes the USB section 2
1, the power supply state (power consumption state) of each functional block of the IrDA unit 22 and the wireless unit 23 is detected, and this detection signal is output to the CPU 1. The power control state detection unit 20
Has a function as a detecting means.

The USB section 21 includes a peripheral device and a USB (Un
Wired data communication according to the iversal Serial Bus standard is performed, and the IrDA unit 22 is connected to an external device and IrDA (Infrar).
The wireless unit 23 transmits / receives a radio wave signal to / from an external device by performing infrared communication according to an infrared communication standard by the ed Data Association).

Next, the operation of the second embodiment will be described. FIG. 6 is a flow chart for explaining the operation of the second embodiment according to the present invention. This flowchart is for explaining a program for causing a computer constituting the mobile terminal 200 of the present invention to realize each function. This program is described as an example in which it is stored in the recording medium in the form of a program code that can be read by the CPU 1. However, it is not necessary to store all the functions in the recording medium, and some or all of the functions may be stored as necessary. It may be realized by receiving from a transmission control unit (not shown) via a communication network.

The instantaneous power failure detection process executed by the mobile terminal 200 will be described with reference to FIG.

The output voltage of the main power source 8 becomes a predetermined value or less,
When the detection signal indicating interruption of the main power supply 8 is input from the voltage detection unit 6, the CPU 1 determines that an instantaneous power failure has occurred (step S21; YES), and the power supply control state detection unit 20
The power supply state corresponding to each block of the USB unit 21, the IrDA unit 22, and the wireless unit 23 is detected (step S2).
2).

Next, the CPU 1 obtains the timer value corresponding to the power supply state detected in step S22 from the current value table 52 stored in the storage device 5 (step S23), and stores this timer value in the timer 10. It is set (step S24).

When the power supply from the main power supply 8 is restored (step S26; YES) before the timer 10 has finished counting (step S25; NO), the CPU 1
The time measurement by the timer 10 is ended, the process returns to step S21, and the signal input from the voltage detection unit 6 is again waited.

If the power supply from the main power supply 8 is not yet restored during the time counting by the timer 10 (step S26;
If NO), the CPU 1 continues the time measurement, and if the power supply from the main power source 8 is not yet restored even after the time measurement by the timer 10 ends (step S25; YES), the CPU 1 shifts to the power outage process.

As described above, according to the portable terminal 200 of the second embodiment, each functional block (U
The number of blocks consuming power by setting the timer value, which is the longest time that the auxiliary power supply 9 can back up, in the timer 10 according to the power supply state to the SB unit 21, the IrDA unit 22, the wireless unit 23) If there are few,
Since the time until the power outage process is extended (long operation guarantee time is set), unnecessary power outage process as in the past is prevented.

The contents of the description in the second embodiment can be changed as appropriate without departing from the spirit of the present invention. For example, in the second embodiment, the power consumption of each functional block is the same, and the timer value is set according to the number of blocks that are consuming power during an instantaneous power failure, but the power consumption differs for each functional block. , Depending on which functional block is consuming power during the momentary power failure,
A timer value may be set.

[0053]

According to the first and fifth aspects of the present invention, the current consumption is set by setting the time for guaranteeing the operating voltage by the power supply from the auxiliary power source according to the current consumption value at the momentary power failure. If the value is small, the guaranteed operation time can be set longer, and even if an instantaneous power failure occurs, the degree of power failure processing will be reduced to prevent unnecessary power failure processing as in the past. be able to.

According to the third and sixth aspects of the present invention, by setting the time for guaranteeing the operating voltage by the power supply from the auxiliary power source in accordance with the power supply state to each functional block at the time of momentary power failure, If the number of function blocks that are supplied with power is small, the operation guarantee time can be set longer, and even if an instantaneous power failure occurs, the degree of power failure processing will be reduced, making it unnecessary as in the past. It is possible to prevent power outage processing from being performed.

[Brief description of drawings]

FIG. 1 is a block diagram showing an internal configuration of a mobile terminal 100 to which a first embodiment of the present invention has been applied.

FIG. 2 is a diagram showing a data configuration of a current value table 51 stored in a storage device 5 in the mobile terminal 100.

FIG. 3 is a flowchart showing an instantaneous power failure detection process executed by the mobile terminal 100.

FIG. 4 is a block diagram showing an internal configuration of a mobile terminal 200 to which the second embodiment of the present invention has been applied.

5 is a diagram showing a data configuration of a current value table 52 stored in a storage device 5 in the mobile terminal 200. FIG.

FIG. 6 is a flowchart showing an instantaneous power failure detection process executed by the mobile terminal 200.

[Explanation of symbols]

1 CPU 2 Display 3 input section 4 RAM 5 storage devices 6 Voltage detector 7 Power control unit 8 main power supply 9 Auxiliary power supply 10 timer 11 Current detector 12 buses 20 Power supply control state detector 21 USB section 22 IrDA section 23 Radio 100,200 mobile terminals

Claims (6)

[Claims] 1. A data processing device having an auxiliary power supply for supplying power when an instantaneous power failure of the main power source occurs, the current measuring means for measuring a current consumption value at the time of the instantaneous power failure, and the current measurement. Depending on the current consumption value measured by the means, setting means for setting the time for guaranteeing the operating voltage by the power supply from the auxiliary power supply, and a clocking means for timing the operation guarantee time set by the setting means, A data processing device comprising: a power failure processing means that performs power failure processing when the instantaneous power failure is not recovered before the time counting by the time counting means ends. 2. The setting means stores a plurality of operation guarantee times corresponding to a plurality of consumption current values, respectively, and stores the operation guarantee time longer as the consumption current value becomes smaller, based on the stored contents of the storage means. The operation guarantee time is set according to the current consumption value.
The described data processing device. 3. A data processing device having a plurality of functional blocks and an auxiliary power supply for supplying power when an instantaneous power failure of the main power source occurs, the power source for each block in the case of the instantaneous power failure. Detecting means for detecting a supply state; setting means for setting a time period for guaranteeing an operating voltage by the power supply from the auxiliary power source according to the power supply state for each block detected by the detecting means; and the setting means And a power failure processing means that performs power failure processing when the instantaneous power failure does not recover by the time the time counting by the time counting means ends. Data processing device. 4. The storage means stores a plurality of guaranteed operation times corresponding to the number of blocks to which power is supplied, and a longer guaranteed operation time as the number of blocks to which power is supplied decreases. 4. The data processing device according to claim 3, wherein the operation guarantee time is set according to the power supply state to each block based on the stored contents of the means. 5. A current measuring function for measuring a current consumption value in the event of an instantaneous power failure in a computer, and an operating voltage guaranteed by a power supply from an auxiliary power source according to the current consumption value measured by the current measurement function. Setting function for setting the time to be set, a time counting function for measuring the operation guaranteed time set by the setting function, and if the instantaneous power failure does not recover before the time counting by the time counting function ends, perform a power failure process. A power outage processing function to perform, and a program to realize the function. 6. A detection function for detecting a power supply state for a plurality of functional blocks at the time of a momentary power failure in a computer, and an auxiliary power source according to the power supply state for each block detected by the detection function. A setting function for setting the time for guaranteeing the operating voltage by the power supply, a time counting function for measuring the operation guaranteed time set by the setting function, and the instantaneous power failure is recovered before the time counting by the time counting function is completed. If not, a power outage processing function that performs power outage processing, and a program to implement the function.