JPH08314715A - Data processor - Google Patents

Abstract

PURPOSE: To prohibit the use of software for a data processor of a different protection code and also to freely copy the software. CONSTITUTION: A data processor starts a program to process data and is provided with an NVRAM 25 which previously stores a main body protection code to judge whether a program should be carried out or not. Then, it is judged whether the program protection code included in the program to be carried out is coincident with the main body protection code received from the NVRAM 25. When both codes are judged to be not coincident with each other, the execution of the program is prohibited, and the program is carried out when the coincidence is judged between both protection codes.

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 for activating a program to perform data processing.

[0002]

2. Description of the Related Art In this type of data processing apparatus, the software is protected so that it cannot be copied in order to prevent the data processing from being executed by an illegally copied software program. I am trying.

For example, there is a method in which a predetermined execution protect code is input when a program is executed, and the program can be executed only when it matches the program code included in the program.

Further, in recent years, hard disks have become widespread, and even if they can be installed by using dedicated software, protection is applied at the time of installation so that they cannot be executed even if the software on the hard disk is copied. There are also things.

[0005]

However, such a data processing device has a problem that it is troublesome because the protection code is applied and the execution protection code must be input each time the program is executed. .

[0006] Further, if the protection is applied, a backup copy cannot be freely made, so that a legitimate user is forced to inconvenience that a substitute cannot be used when an accident occurs.

Therefore, the present invention can be executed only when the protect code of the software matches the protect code of the device, thereby preventing the use of the software in the device having different protect codes.
Moreover, it is an object of the present invention to provide a data processing device in which software can be freely copied and operation such as code input is unnecessary at the time of execution.

[0008]

According to a first aspect of the present invention, in a data processing device for activating a program to perform data processing, a protect code for a main body for determining whether or not to execute the program is provided in advance. The stored non-volatile storage means, the code matching determination means for determining whether or not the program protection code included in the program to be executed and the main body protection code from the non-volatile storage means match, When the code matching judging means judges that the protect codes do not match, a protecting means for prohibiting the execution of the program is provided.

According to a second aspect of the present invention, in a data processing device for activating a program to perform data processing, a nonvolatile memory in which a main body protect code for determining whether or not to execute the program is stored in advance. Means, a protect code presence / absence determining means for determining whether or not the program to be executed contains a protect code, and the program is executed when the protect code presence / absence determining means determines that the program does not include a protect code. When the program executing means to be executed and the protect code presence / absence determining means determine that the protect code is included, whether or not the program protect code included in the program and the main body protect code from the non-volatile storage means match each other. Code matching determining means for determining whether When a match determination unit determines that protect code do not match, it is provided with a a protection means for inhibiting the execution of the program.

[0010]

According to the present invention, when the program is executed, the code coincidence determining means determines whether or not the program protect code contained in the program coincides with the main body protect code from the non-volatile storage means. To judge. Then, when it is determined that the protect codes match, the program is executed, and when it is determined that the protect codes do not match, the execution of the program is prohibited.

In the present invention according to claim 2, when the program is executed, the protect code presence / absence determining means determines whether or not the program includes the protect code. When it is determined that the protection code is not included, the program executing means executes the program. When it is determined that the protect code is not included, the code matching determining means determines whether or not the program protect code included in the program and the main body protect code from the non-volatile storage means match. At this time, if it is determined that the protect codes match, the program is executed, and if it is determined that the protect codes do not match, execution of the program is prohibited.

[0012]

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

FIG. 1 is a perspective view showing the external structure of this embodiment, and 1 is a data processing device. This data processing device 1
A keyboard 2, a floppy disk device 3, a display device 4 for displaying a liquid crystal display, an insertion portion 5 for inserting paper such as slip paper and form paper, and a serial printer 6 are provided in the center of the front surface of the A platen knob 7 for manually rotating the platen of the printer 6 is provided on the side.

FIG. 2 is a block diagram showing the configuration of the data processing device 1, and 11 is a CPU constituting the control unit main body.
(Central processing unit), 12 is a ROM (read only memory) in which program data of processing performed by the CPU 11 and the like are stored, and 13 is an area of various memories used when the CPU 11 performs processing. RAM (random access memory), 14 is a hard disk interface for controlling data transmission with a hard disk device 15 in which a plurality of application programs and various data are stored, and 16 is a floppy disk device in which application programs and various data are stored. This is a floppy disk interface for controlling data transmission with the device 17.

The CPU 11, ROM 12, RAM 1
3. The hard disk interface 14 and the floppy disk interface 16 are connected to each other via a bus line 18 such as a data bus, a system bus, a control bus, or the like.

Further, the CPU 11 temporarily stores, via the bus line 18, a CG (character generator) 21 for converting code data such as characters into image data and image data to be displayed on the display 4. V
A RAM (video RAM) 22, a display controller 23 for controlling the display 4 based on image data from the VRAM 22, and a keyboard interface 24 for controlling data transmission with the keyboard 2 are connected.

Further, in the CPU 11, the stored contents are not erased even when the power is turned off and the contents can be read / written via the bus line 18, and the NVRAM (nonvolatile RAM) 25, the printer controller 26 for controlling the printer 6, the communication. An external interface 2 to which an external device is connected via a line or the like
7 is connected.

A program as shown in FIG. 5 is stored in the floppy disk or the hard disk device 15 to be inserted into the floppy disk device 3. This program consists of data 31a that consists of 16 bytes and indicates the business name.
At the beginning, a program protect code 31b composed of 16 bytes for prohibiting program execution due to illegal copying and a program body 31c consist of continuous data. Further, the NVRAM 22 stores in advance a main body protect code for determining whether or not to execute the floppy disk program.

The CPU 11 is adapted to perform a protect control process as shown in FIG. 3 when executing a program for data processing. That is, the CPU 11
First, in ST (step) 1, the main body protect code is read from the NVRAM 25.

Then, in ST2, the program protect code in the program to be executed is searched and read. Then, in ST3, it is determined whether or not there is a program protect code in the program, that is, whether or not the program protect code is read (protect code presence / absence determining means).

At this time, when it is judged that the program protect code has been read, it is judged at ST4 whether or not this program protect code matches the main body protect code from the NVRAM 25 (code matching judging means). ). If it is determined that the protect codes match, the program is executed in ST5, and the protect process ends.

On the other hand, if it is determined in ST4 that the protection codes do not match, the display 4 is driven in ST6 to warn the user that the program cannot be executed. For example, "Protection code does not match, execution cannot be performed." Is displayed on the display unit 4 and the protection process is terminated (protection means). In this case, the program will not be executed.

If it is determined in ST3 that the program protect code cannot be read, the program is executed in ST5 (program executing means), and this protect processing is terminated. As a result, it is possible to execute a program without the program protection code.

By the way, when setting the main body protect code in the NVRAM 25, the CPU 11 operates as shown in FIG.
The protection code input process as shown in FIG. That is, the CPU 11 first NVs at ST11.
The main body protect code is read from the RAM 25.

Subsequently, in ST12, it is determined whether or not the main body protect code can be read from the NVRAM 25, that is, whether or not the main body protect code has been set. At this time, if it is determined that the protect code for the main body is set, the user is instructed to NVRAM2
Prompt for the protection code for the main unit that has already been set to 5. For example, "Please input the previous protect code" is displayed on the display unit 4.

Then, in ST14, it is determined whether or not a code is input. If it is determined that the code has been input, the code input in ST15 is already NVRAM2.
It is determined whether or not it matches the protection code for the main body set to 5.

At this time, if it is determined that the main body protect code matches, the user is prompted to input the main body protect code in ST16. For example, the message “Please enter the protect code.” Is displayed on the display unit 4.

Subsequently, in ST17, it is determined whether or not a code is input. When it is determined that the code has been input, the code input in ST18 is written in the NVRAM 25 as the main body protect code, and the protect code input process ends.

When it is determined that the code input in ST15 does not match the body protection code already set in the NVRAM 25, the user is informed in ST19 that the body protection code cannot be set. To do. For example, the message "Protect codes do not match." Is displayed on the display unit 4 and the protect code input process is terminated. Therefore, in this case, the protect code for the main body cannot be rewritten or set.

If it is determined in ST12 that the main body protect code is not set in the NVRAM 25, the process proceeds to ST16 and the main body protect code is set.

In the present embodiment having such a structure, when the program having the program protect code is executed, if the program protect code matches the main body protect code set in the NVRAM 25 of the data processor. Runs the program and, if they do not match, does not run the program.

As a result, it is possible to prevent the software from being used in devices having different protect codes. Further, when the program is copied, the protect code for the program is also copied, so that the copied program can be executed if it matches the protect code for the main body. Therefore, software (program) can be freely copied and backup can be made. Moreover, since a troublesome operation such as inputting a protect code is not necessary when executing the program, the burden on the user can be reduced.

More specifically, for example, as shown in FIG. 6, all programs used in a sales agency A having a data processing device A in which "ABC00001" is preset as a body protection code are protected by the program. It is assumed that “ABC00001” is included as a code in advance.

On the other hand, as the protect code for the main body, "X
All programs used by the sales agent B having the data processing device B in which “YZ00009” is preset are provided with “XYZ000” as the program protection code.
09 ”is included in advance.

In such a case, user A of sales agent A
When 1, A2 and A3 respectively perform data processing using the data processing device A based on the program including the program protect code of "ABC00001",
Since the protect codes match, the program can be executed without problems.

Also, the users B1 and B2 of the sales agent B use the data processing device B to select "XYZ0000".
When the data processing is performed based on the program including the program protect code of "9", the protect codes match and the program can be executed without any problem.

However, when the sales agent B illegally obtains the program from the user A3 of the sales agent A,
Since this program includes “ABC00001” as the program protect code, it does not match the main body protect code of the data processing device B of the sales agent B. Therefore, the program illegally obtained from the sales agency A cannot be executed by the data processing device B of the sales agency B.

Moreover, since there is no means for knowing the program protection code of the sales agent A, the data processor B
It is also impossible to change the main body protect code of the main body of the data processor A to the main body protect code of the data processing apparatus A. further,
You cannot edit the program. In this way, it is possible to effectively prohibit the execution of the program by illegal copying.

Further, since the program which does not include the program protect code is executed as it is as usual, the protect processing can be performed regardless of the presence or absence of the program protect code. Therefore, it can be applied to various data processing devices. Further, by selectively including a program protection code, it is possible to selectively prohibit the execution of an important program.

By the way, when changing the protect code for the main body of such a data processing apparatus, the code cannot be changed unless the preset protect code for the main body is input. Thereby, it is possible to prevent the protect code for the main body from being freely changed.

However, if the main body protect code is not set yet, for example, before shipment, the main body protect code can be freely input. As a result, it is possible to eliminate a troublesome operation such as code input at the time of initial input, and it is possible to quickly perform initial setting at the time of shipping.

In this embodiment, the NVRAM is used as the non-volatile storage means, but the non-volatile storage means is not necessarily limited to this, and the non-volatile storage means may be a P (Programmable) ROM or EP (Eras).
A programmable and programmable ROM, EEPROM, flash memory or the like may be used.

[0043]

As described above in detail, according to the present invention, the software can be executed only when the protect code of the software matches the protect code of the apparatus, so that the software of the apparatus having the different protect code can be executed. It is possible to provide a data processing device which can prevent the use of the software, can copy the software freely, and does not require operations such as code input at the time of execution.

Further, since the program which does not include the program protect code is executed as it is as usual, the protect processing can be performed regardless of the presence or absence of the program protect code. Therefore, it can be applied to various data processing devices. Further, by selectively including a program protection code, it is possible to selectively prohibit the execution of an important program.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external configuration of an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of data processing shown in FIG.

FIG. 3 is a flowchart showing a protect process performed by the CPU shown in FIG.

FIG. 4 is a flowchart showing a protect code input process performed by the CPU shown in FIG.

FIG. 5 is a diagram showing an example of a program configuration executed by the data processing apparatus according to the embodiment.

FIG. 6 is a view for explaining the operation of the same embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Data processing device 11 ... CPU 25 ... Nonvolatile storage means (NVRAM)

Claims (2)

[Claims] 1. In a data processing device for activating a program to perform data processing, a non-volatile storage means in which a main body protection code for determining whether or not to execute the program is stored in advance, and an attempt is made to execute it. And a code match judging means for judging whether or not the protect code for the program included in the program and the protect code for the main body from the non-volatile storage means match, and the code match judging means determines that the protect codes do not match. A data processing device comprising a protect means for prohibiting execution of the program when a judgment is made. 2. In a data processing device for activating a program to perform data processing, a non-volatile storage means in which a main body protect code for determining whether or not to execute the program is stored in advance, and an attempt is made to execute it. A protect code presence / absence determining means for determining whether or not the program to be protected includes a protect code; a program executing means for executing the program when the protect code presence / absence determining means determines that the program does not include a protect code; A code for determining whether or not the program protect code included in the program and the main body protect code from the non-volatile storage means match when the protect code presence / absence determining means determines that the protect code is included. The matching judgment means and this code matching judgment means A data processing device comprising: a protection means for prohibiting execution of the program when it is determined that the protection codes do not match.