JPS63310044A - Controller - Google Patents

Abstract

PURPOSE:To recognize or predict the replacement/adjustment of a hardware equipment by managing the number of times of start of software. CONSTITUTION:After a system is raised, a CPU 5 reads data 11 of the number of execution times and data 12 of the number of limit times stored in a magnetic disk 3, displays a message of it on a CRT display device 1 if the data 11 exceeds the data 12 to complete the execution of the control program. When the data 11 does not exceed the data 12, the control program stored in a memory 6 is executed and the data 11 stored in the magnetic disk 3 is updated to complete the processing. Thus, the user can grasp the deterioration or wear of an electronic equipment controlled by the CPU 5 before the limit.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a control device in which a central processing unit (CPU) programmatically controls connected hardware devices based on a control program stored in a storage medium. be.

(Conventional technology) In recent years, with the advancement of electronic technology, C
Many electronic devices equipped with PU have been commercialized.

In such electronic devices, the cPU is configured to read a control program stored in a storage medium such as a ROM chip in an external storage device and control input and output of each hardware device.

In particular, a system has been developed that restricts the execution of the software (control program) stored on the storage medium due to the importance of the data to be processed, and prevents the desired program from being executed due to unnecessary operator access. ing.

Such systems usually have a flag related to software execution in the file management block, and a user ID.
By determining the correspondence with the code, it is determined whether the user is allowed to execute the requested software, and execution of a specific program is restricted to a specific user.

(Problem to be Solved by the Invention) However, even if the execution of software is restricted as described above, it is not possible to determine the state of deterioration of the hardware based on the number of times the software is actually activated. The condition of the hardware device that has reached the time of replacement is not taken into account, and the software is started up and abused, and as a result, the software is not started up in a state where errors are very likely to occur for hardware devices. There was a serious problem that caused a serious system error.

This invention was made to solve the above problems, and by managing the number of times the software is started,
The purpose of this invention is to obtain a control device that can restrict the activation of the software.

[Means for solving problems]

The control device according to the present invention includes a program storage means for storing a control program and a limit number of times the control program is started, and a program start-up number storage means for sequentially updating and storing the number of times the control program is executed when the control program is sequentially started by the processor. It was established.

(Operation) In the present invention, each time the processor starts the control program, the number of executions updated and stored in the program startup number storage means and the limited number of startups stored in the program storage means are referenced and compared to start the control program. control.

〔Example〕

FIG. 1 is a block diagram illustrating the configuration of a control device showing an embodiment of the present invention, in which 1 is a CRT display;
Displays data input from the keyboard 2, program execution results, etc. The keyboard 2 inputs data and commands to be processed by the CPU 5. 3 is a magnetic disk serving as a program storage means of the present invention, as shown in FIG.
The control procedure shown in FIG. 5 and the control program to be executed.

Data is stored in a rewritable manner. 4 is a floppy disk device in which predetermined general-purpose software is stored. Reference numeral 5 denotes a CPU serving as a microprocessor, which refers to and compares the execution count data sequentially updated and stored in the magnetic disk 3 with the start limit count data set in advance each time the control program is started, and controls the execution of the control program. Restrict. A memory 6 stores control programs and data executed by the CPU 5, and functions as a work memory.

FIG. 2 is a schematic diagram illustrating the memory space of the magnetic disk 3 shown in FIG. 1, and the same parts as in FIG. 1 are given the same reference numerals.

In this figure, 11 is execution count data, which is sequentially updated every time the CPU 5 executes the control program. Reference numeral 12 indicates start-up limit number of times (limited number of times) data, which is arbitrarily and rewritably stored depending on the type of electronic device controlled by the control program. 13 is a control program, which is a CPU
The data is read out onto the memory 6 every time the system is started up.

As can be seen from this figure, the execution count data 11 and the limit count data 12 are stored sequentially from the top address of the magnetic disk 3.

Next, the program startup control operation according to the present invention will be explained with reference to FIG.

FIG. 3 is a flowchart illustrating a program startup control procedure according to the present invention. Note that (1) to (4) indicate each step.

When the system is started, the CPU 5 reads the execution count data 11 and the limit count data 1 stored in the magnetic disk 3.
2) and judge whether the execution count data 11 exceeds the limit count data 12 (1), and if YES, C
Please display a message to that effect on RT Display 1 2)
, the process ends without executing the control program process.

On the other hand, if the judgment in step (1) is No, the control program stored in the memory 6 is executed (3), the execution count data 11 stored in the magnetic disk 3 is updated to "1" (4), Finish the process.

In the above embodiment, a case has been described in which one piece of limit number data 12 is stored in the magnetic disk 3, but it is also possible to store a plurality of pieces of data 12 and control the startup of the control program in stages as shown in FIG. good.

FIG. 4 is a schematic diagram illustrating the memory space of the magnetic disk 3 shown in FIG. 1, and the same parts as in FIG. 2 are given the same reference numerals.

In this figure, 12a is the first limit number of times data;
The limited number of times data 12a is smaller than the second limited number of times data 12b, and when the number of executions data 11 is updated to a value exceeding the first limited number of times data 12a, the number of executions data 11 is changed to the second limited number of times data 12b. Compared by reference.

FIG. 5 is a flowchart illustrating another program startup control procedure of the present invention. Note that (1) to (5) indicate each step.

When the system is started, the CPU 5 reads out the execution count data 11 and the first limit count data 12a stored in the magnetic disk 3, and determines whether the execution count data 11 exceeds the first limit count data 12a. Shiku1), Y
If it is ES, the execution count data 11 is the second limit count data 1
Please judge whether it exceeds 2b2), if NO, CR
Display that fact (that the set limit number of times has been reached) on the T-display 1 (3), and proceed to step (4).

On the other hand, if the determination in step (2) is NO, the number of times the control program is executed by the CPU 5 is determined by the second limit number data 12.
It is determined that the value exceeds b, and the process is terminated without executing the process of the control program.

On the other hand, if the determination in step (1) is No, the control program stored in the memory 6 is executed (4), the execution count data 11 stored in the magnetic disk 3 is updated to "1" (5), Finish the process.

This allows the user to understand the deterioration and wear and tear of the electronic equipment controlled by the CPU 5 before reaching the limit on the number of times the program is activated, and to prepare for processing when the original limit on the number of program starts is reached. .

〔Effect of the invention〕

As explained above, the present invention includes a program storage means for storing a control program and the limited number of times the control program is started, and a program start-up number storage means for sequentially updating and storing the number of times the control program is executed when the control program is sequentially started by a processor. This allows us to limit the number of times the software is executed to drive hardware that wears out or deteriorates as the control program starts, so we can replace hardware before system startup problems occur.

This has the advantage that adjustments can be recognized or predicted, increasing the reliability of a software-driven system.

[Brief explanation of drawings]

FIG. 1 is a block diagram explaining the configuration of a control device showing an embodiment of the present invention, FIG. 2 is a schematic diagram explaining the memory space of the magnetic disk shown in FIG. 1, and FIG. 3 is a block diagram explaining the configuration of a control device according to the present invention. FIG. 4 is a schematic diagram illustrating the memory space of the magnetic disk shown in FIG. 1, and FIG. 5 is a flowchart illustrating another program startup control procedure of the present invention. In the figure, 1 is a CRT display, 2 is a keyboard, 3 is a magnetic disk, 4 is a floppy disk device, and 5 is a CP
U, 6 is a memory. 11 is execution count data, and 12 is limit count data. Figure 1 Figure 2 Figure 3

Claims (3)

[Claims] (1) In a control device having a processor that program-controls an electronic device based on a control program, a program storage means for storing the control program and a limit number of times the control program is activated; 1. A control device comprising: program start-up number storage means for sequentially updating and storing the number of times a program has been executed. (2) Each time the control program is started, the processor refers to and compares the number of executions updated and stored in the program start-up number storage means with the start-up limit number of times to limit the start-up of the control program. The control device according to paragraph (1). (3) The control device according to claim (1), wherein the program start-up number storage means is configured to changeably store a plurality of start limit times having different priorities.