JPH08202633A - Data processor - Google Patents

Abstract

PURPOSE: To provide a data processor which controls the power supplied from a backup power supply in response to the data saving processing that is carried out by an application program in a service interruption mode. CONSTITUTION: A CPU 11 contains a data saving flag F1 and a service interruption flag F2 which can be set and referred to by an application program under execution. At the same time, a data saving execution flag F3 is provided in an application storage part 22 in accordance with an application that has a service interruption mode data saving processing function. In such a constitution, a backup power supply 1b supplies the power only in a data saving processing period and only when the service interruption mode data saving processing is carried out for the application itself in a service interruption mode.

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, and more specifically, it relates to the presence / absence of data saving processing at power failure executed by an application program at the time of power failure.
The present invention relates to a data processing device that controls power supply from a backup power supply.

[0002]

2. Description of the Related Art Conventional data processing devices include, for example, engineering workstations (Engineerin).
g Work station), personal computer (Personal
Computer) etc.

In these data processing devices, when power supply is suddenly or continuously interrupted due to power failure or disconnection, etc., a UPS unit for supplying power for a certain period to prevent damage to the devices. (Uniterruptible P
ower Supply).

As shown in FIG. 4, the UPS unit 1 comprises a power failure detection unit 1a and a backup power supply 1b.
The power failure detection unit 1a detects a state in which the supply voltage supplied from the AC power source to the data processing device is stopped by a power failure, and outputs a predetermined power failure detection signal to the CPU (Ce of the data processing device).
ntral Processing Unit: not shown).

The backup power supply 1b is constantly charged by an AC power supply, and in response to a predetermined supply start signal input from the CPU when a power failure is detected, the backup power supply 1b replaces the AC power supply and supplies power to each part in the data processing device for a certain period of time.

The conventional power outage process executed by the CPU of the data processing device is a process executed upon receipt of an input of a power outage detection signal from the power outage detection unit 1a of the UPS unit 1. Upon receiving the power failure detection signal, the CPU determines that there is a power failure and outputs a supply start signal to the backup power supply 1b. When the supply start signal is input, the backup power supply 1b supplies power to each part in the data processing device for a certain period of time.

On the other hand, among various application programs (hereinafter referred to as “application programs”) operated on the data processing apparatus, the application itself detects the power failure at the time of power failure, and the backup power supply 1b is used as the data processing apparatus. There is an application that executes a data saving process unique to an application during a period in which power is supplied to each unit for a certain period of time.

When an application having such a power failure monitoring function and a unique power failure data saving processing function detects a power failure state during operation, the input data currently being processed and the operation data temporarily stored, By saving and storing the program processing position in an external storage unit such as a hard disk, the damage such as data destruction due to power failure is minimized.

[0009]

However, such a conventional data processing apparatus does not have a power failure monitoring function, or when an application is operating that has a power failure monitoring function but does not have a data saving processing function during a power failure, Alternatively, even when the application's own power failure data save processing is not executed at the time of power failure such as when the application is not operating, the conventional power failure processing does not perform these determinations, so it is meaningless from the backup power supply. There is a problem in that the power is supplied, the power stored in the backup power is wasted, and the deterioration of the power storage function is accelerated.

Further, in the conventional data processing device,
Since the power supply signal from the CPU is used to supply power from the backup power source to each part of the data processing device for a certain period of time, an application having a data backup processing function during a power failure has already saved data during a power failure. Despite the completion of the process, the backup power supply has a wasteful part during the power supply period, such as continuing to supply power until the specified period, thus wasting the power stored in the backup power supply There was also the problem of accelerating the deterioration of functions.

An object of the present invention is to determine whether or not the application-specific data saving processing during a power failure is executed during a power failure by the power failure processing of the CPU in the data processing device.
The power is supplied from the backup power supply only when the power saving data saving process is executed. Furthermore, when the power failure processing of the CPU in the data processing device receives the completion of the power saving data saving process from the application, the backup power supply That is, by stopping the power supply of the power supply, unnecessary power supply from the backup power supply is avoided.

Further, as described above, the CP of the data processor is
Focusing on the fact that U can determine whether or not the application-specific data save processing during a power failure is performed, and when the application-specific data save processing during a power failure is executed when returning from a power failure state, save It is possible to immediately continue the application processing based on the data.

[0013]

The means of the present invention are as follows. According to the first aspect of the present invention, a detecting unit for detecting a power failure, a backup power supply for supplying power when a power failure is detected, and a program for executing data processing include a program for saving data during a power failure. If it is determined that a data saving process is incorporated in the program currently being processed when the power failure is detected, the determining unit that determines whether or not the If power is supplied from the backup power supply and the execution of the data save process is confirmed, then the power supply from the backup power supply is stopped and stopped, and if it is determined that the data save process is not incorporated, It is characterized by comprising a control means for stopping without supplying power from a backup power supply.

Further, in this case, as in the invention described in claim 2, when the data is saved at the time of power failure when the control means recovers from the power failure, based on the saved data, It is effective to provide a process continuation means for continuing the process.

[0015]

The operation of the means of the present invention is as follows. According to the first aspect of the invention, when the detecting means detects the power failure, the determining means determines whether or not the program for performing the data saving processing is incorporated, and the data saving processing is incorporated. If it is determined that the backup power is supplied, the control means confirms the completion of the execution of the data saving process, then stops and stops the power supply from the backup power, and the data saving process is incorporated. If it is determined that the backup power has not been supplied, the backup power supply is stopped without supplying power.

Therefore, it is possible to avoid unnecessary power supply from the backup power supply in the data processing device,
It is possible to reduce the deterioration of the power storage function of the backup power supply and improve the reliability.

According to the second aspect of the present invention, when the data is saved at the time of power failure when the control means recovers from the power failure, the control means writes the data saved by the processing continuation means. Based on this, processing is continued.

Therefore, it is possible to strengthen the support system for the application program at the time of power failure recovery and improve the usability of the data processing device.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, referring to FIG. 1 to FIG.
Embodiments of the described invention will be described in detail. 1 to 3 are
It is a figure which shows one Example of the data processing apparatus to which this invention is applied. First, the configuration will be described. FIG. 1 is a block diagram showing the overall configuration of the data processing device 10 of this embodiment. In this figure, the data processing device 10 includes a UPS unit 1 and a C unit.
PU 11, input unit 12, input control unit 13, display drive unit 1
4, a display unit 15, a ROM 16, a print control unit 17, a print unit 18, a memory 19, a timer 20, and an external storage unit 21, and includes a CPU 11, an input unit 12, an input control unit 13, a display drive unit 14, and a display. The unit 15, the ROM 16, the print control unit 17, the print unit 18, the memory 19, the timer 20, and the external storage unit 21 are connected to the bus 23.

The UPS unit 1 is composed of a power failure detection unit 1a and a backup power supply 1b, and when the power supply is suddenly or continuously interrupted due to a power failure or a disconnection, the data processing unit 10 Supply power to each part. The power failure detection unit 1a detects a state in which the supply voltage supplied from the AC power supply to the data detection device 10 is stopped by a power failure, and outputs a predetermined power failure detection signal to the CPU 11.

The backup power supply 1b is always charged by the AC power supply, and in response to a predetermined supply start signal input from the CPU 11 when a power failure is detected, the backup power supply 1b is replaced with the AC power supply to supply power to each part in the data processing device. , C
Power supply is stopped by a predetermined supply end signal input from the PU 11.

The CPU 11 executes the basic control program stored in the ROM 16 when the power of the data processing device 10 is turned "ON", checks the configuration of each part in the data processing device 10 and prepares an operating environment. At the same time, the designated application is transferred from the application storage unit 22 in the external storage unit 21 to the memory 19 according to the application designation from the input unit 13, and the process according to the application is executed.

Further, the CPU 11 causes the data saving flag F
1 and the power failure flag F2 are stored, and the data saving flag F1 and the power failure flag F2 are used when executing the timer interrupt processing described later, and the data saving processing function at the time of the power failure of the application being executed at the time of the power failure occurs. By determining the presence or absence, the backup power supply 1b in the UPS unit 1
Control the power supply operation to each part in the data processing device 10 from the.

The data save flag F1 is flag data used when determining whether or not the application being executed has the data save processing function during a power failure. When the data save flag F1 has the function, "1" is set. If there is no such function, "0" is set.

The power failure flag F2 is flag data used according to the presence or absence of the power failure detection signal input from the power failure detection unit 1a of the UPS unit 1. When the power failure detection signal is input, This is set to "0" when "1" is set, the power failure state is restored, and the continuation processing of the application processing that was executed before the power failure is restarted based on the saved data.

The input unit 12 is composed of a keyboard, a mouse and the like, and outputs various input information corresponding to various key input operations to the input control unit 13. The input control unit 13 is the input unit 1
Various input information from 2 is output to the CPU 11 via the bus 23.

The display drive unit 14 includes a CPU 11 and a bus 23.
The display unit 15 is driven and controlled by the data input from the CPU 11 via the bus 23 and the calculation result. The display unit 15 includes a CRT (Cathode Ray Tube), a liquid crystal display, and the like, and is drive-controlled by the display drive unit 14 to display data, calculation results, and the like.

The ROM 16 stores a basic control program and the like necessary for maintaining the configuration and operating environment of each unit in the data processing device 10. When the power of the data processing device 10 is turned "ON", the CPU 11 The basic control program is read out and used by. The print control unit 17
It is connected to the CPU 11 via a bus 23, and drives and controls the printing unit 18 according to print data input from the CPU 11 via the bus 23.

The printing unit 18 is driven and controlled by the printing control unit 17 and prints data and calculation results on a predetermined paper. The memory 19 forms a memory area for temporarily storing an application program being processed by the CPU 11 and calculation data being processed.

The timer 20 is a timer for setting the interrupt time of the timer interrupt process executed by the CPU 11, and outputs its time-up signal to the CP via the bus 23.
Output to U11. The external storage unit 21 is composed of a hard disk drive (Hard Disk Drive), a floppy disk drive (Floppy Disk Drive), and the like.
The input data from U11, the calculation result, and the like are stored, and various application programs are stored in the application storage unit 22.

The application program stored in the application storage unit 22 is the data processing device 1
0 is an application program operated on 0, for example, for office calculation, document creation, scientific and technological calculation, etc. These application programs are transferred from the external storage unit 21 to the memory 19 according to a designation from the CPU 11, Is activated.

Further, the application storage unit 22 is
The data save execution flag F3 is stored. This data save execution flag F3 is set to "1" when the application program executes its own data save processing during a power failure at the time of a power failure, and the data is saved from the power failure state. hand,
It is set to "0" when the continuing processing of the application program processing that was executed before the power failure is restarted based on the saved data.

Therefore, the CPU 11 can determine whether or not the application being executed has the data saving processing function during a power failure by referring to the data saving execution flag F3.

Next, the operation will be described. First, the power failure process executed by the CPU 11 of the data processing device 10 of the present embodiment will be described based on the flowchart shown in FIG. This power outage process is a timer interrupt process that is executed each time the timer 20 times up, and it is determined at regular time intervals whether or not a power outage detection signal is input from the power outage detection unit 1a of the UPS unit 1 (step S1). ), If the power failure detection signal is not input, terminate the power failure processing,
When the power failure detection signal is input, the power failure flag F2 is set to "1" (step S2).

The "1" set state of the power failure flag F2 is maintained until the continuation of the application processing which was executed before the power failure is restarted based on the saved data.

Next, it is determined whether or not the application program is in operation (step S3). If the application program is not in operation, the power outage process is terminated, and if it is in operation, the application program is in the power outage data saving process. Whether or not it has a function is determined by whether or not the data save flag F1 is set to "1" (step S4). If there is no data saving processing function during power failure, that is, if the data saving flag F1 is set to "0", power failure processing is terminated, and if there is a data saving processing function during power failure, that is, data saving flag F1 If is set to "1", the CPU 11 outputs a supply start signal to the backup power supply 1b to start power supply from the backup power supply 1b to each part in the data processing device 10 (step S5).

When the completion of the power saving data saving process unique to the application program is input to the CPU 11 of the data processing device 10 (step S6), the CPU 1
1 outputs a supply end signal to the backup power supply 1b,
The power supply from the backup power supply 1b is stopped (step S7), the power outage process is terminated, and the data processing device 10 is stopped. The above is the operation procedure of the power failure process executed by the CPU 11 of the data processing device 10.

Next, regarding the processing when starting the application program having the data saving processing function at the time of power failure, which is operated on the data processing apparatus 10 of this embodiment,
A description will be given based on the flowchart shown in FIG.

When the application program is started up, first, referring to whether or not the data save execution flag F3 inside the application storage unit 22 is set to "1", the data save processing during power failure unique to the application is executed when a power failure occurs. It is determined whether or not it has been performed (step S10).

When the application program executes its own data saving process before a power failure and the data saving execution flag F3 is set to "1",
That is, when the application program is started immediately after the power failure is recovered, the data saved at the time of the power failure is transferred from the external storage device 21 to the memory 19 (step S11), and based on the transferred data content, before the power failure. Continue the interrupted application processing (step S
12), power failure flag F2 and data saving execution flag F3
Is set to "0" (step S13), and then the application program is normally started (step S14).
Go to).

In step S10, if the application-specific data save processing during a power failure is not performed and the data save execution flag F3 is set to "0", that is, when the normal application program is started up. Sets a data save flag F1 indicating that the application program has a data save processing function at power failure to "1" (step S14).

Next, the power failure state is determined by referring to whether the power failure flag F2 stored inside the CPU 11 is set to "1" (step S15). When the power failure flag F2 is set to "0" instead of the power failure state, the processing based on the application program is executed, and it is determined whether or not an instruction to end the application processing is input at every constant time. (Step S1
7, S18). When an instruction to end the application processing is input, the data save flag F1 stored in the CPU 11 is set to "0" (step S19), and the application program starting processing is ended.

On the other hand, in step 15, when the power failure is in effect and the power failure flag F2 is set to "1", the CPU 11 outputs the supply start signal to the backup power supply 1b by the timer interrupt processing, and backs up. Power supply from the power supply 1b to each part in the data processing device 10 is started.

Then, the CPU 11 saves and stores the program name and the data of the program processing position of the application program being executed in the external storage unit 21 (step S20), and subsequently, the operation data being processed and the temporary storage data. The processed data is saved and stored in the external storage unit 21 (step S21).

Next, the data saving execution flag F3 indicating that the data saving processing during power failure unique to the application is executed is set to "1" (step S22), and the interruption processing is notified of the completion of the data saving processing during power failure. The application program startup process ends. The above is the processing procedure when the application program having the data saving processing function at the time of power failure is started.

Therefore, in the present embodiment, a data saving flag F1 and a power failure flag F2 that can be set and referenced by the application program being executed are provided in the CPU 11 of the data processing apparatus 10, and a data saving processing function at the time of power failure is provided. The data saving execution flag F3 corresponding to the application program having the above is provided in the application storage unit 22 to execute the power interruption process of the timer interrupt and the starting process of the application program having the data saving process function at the time of power failure It is possible to supply power from the backup power supply 1b to each part in the data processing device 10 only when the data saving process at the time of power failure is executed.

Further, in the above power failure process, when the completion of the data saving process unique to the application program is received, the power supply from the backup power supply 1b is stopped, and the backup is performed at the end of the data saving process unique to the application. The power supply from the power supply 1b can be stopped.

Further, when the application-specific data saving process at the time of power failure is executed when returning from the power failure state, the application processing can be immediately continued based on the saved data.

Although the present invention has been specifically described based on the embodiments, the present invention is not limited to the above embodiments, and it is needless to say that the present invention can be appropriately modified without departing from the scope of the invention. Is.

For example, in the present embodiment, the data save flag F3 indicating that the application has a data save processing function during a power failure, which is stored in the application storage unit 22, is stored in the CPU 11. It may be configured to be stored, or may be configured to be stored inside each application program stored inside the application storage unit 22.

[0051]

According to the first aspect of the present invention, it is possible to avoid unnecessary power supply from the backup power supply, reduce the deterioration of the storage function of the backup power supply, and improve the reliability. .

According to the second aspect of the invention, it is possible to strengthen the support system at the time of power failure recovery for the application program, and improve the usability of the data processing device.

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall configuration of a data processing device to which the present invention has been applied.

FIG. 2 is a flowchart of timer interrupt power outage processing executed by the CPU of FIG.

FIG. 3 is a flowchart showing a starting process of an application program having a data saving process function during a power failure executed by the CPU of FIG.

FIG. 4 is a block diagram showing a configuration of a UPS unit of a conventional data processing device.

[Explanation of symbols]

 1 UPS section 1a Power failure detection section 1b Backup power supply 10 Data processing device 11 CPU 12 Input section 13 Input control section 14 Display drive section 15 Display section 16 ROM 17 Print drive section 18 Print section 19 Memory 20 Timer 21 External storage section 22 Application storage Part 23 Bus

Claims (2)

[Claims] 1. A detection means for detecting a power failure, a backup power supply for supplying power when a power failure is detected, and a program for executing data processing, whether a program for saving data during a power failure is incorporated. If a judgment means for judging whether or not a power failure is detected and the judgment means judges that data saving processing is incorporated in the program currently being processed, the backup power source is used. After confirming that the data saving process has been completed, stop the power supply from the backup power source and stop it.If it is determined that the data saving process is not installed, the backup power source A data processing device comprising: a control unit that stops the power supply of the device without performing power supply. 2. The control means comprises a processing continuation means for continuing the processing based on the saved data when the data saving processing is performed at the time of power failure when the power is restored from the power failure. The data processing device according to claim 1.