JPS6231458A - Method for preventing unfair use of software - Google Patents

Abstract

PURPOSE:To prevent the unfair use of the charged software by providing a check program for copy of software to a floppy disk and a collating this program with the fault recognizing information stored previously. CONSTITUTION:The software having a prescribed logic is started at first when the software stored in a floppy disk is executed. Then the fault recognizing information is read out of a defective sector on the floppy disk and collated with the fault recognizing information stored previously. When the coincidence is obtained between both information, an access is permitted to the charged software on the floppy disk. While the subsequent accesses are disabled to the floppy disk if no defective sector exists or no coincidence is obtained between both information.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a method for preventing unauthorized use of software, particularly for preventing unauthorized copying and use of software that has usage rights in a computer system equipped with a floppy disk. Concerning methods to prevent unauthorized software use.

[Problems to be solved by conventional technology and invention] Conventionally,
Although the paid software on the floppy disk has copy protection on a per-file basis, the floppy disk itself has no copy protection, so you can easily copy the contents of the floppy disk by using a copy utility etc. was completed.

In other words, since the above-mentioned conventional paid software on floppy disks can be easily backed up regardless of the floppy disk, users were able to copy the software and use it illegally without the seller's permission. For this reason, a problem has arisen in that even if computer manufacturers charge for software, they are unable to actually achieve the desired effect.

[Means for solving problems]

According to the present invention, in a converter system having a floppy disk, one or more pinholes are drilled at any accessible location on the floppy disk that serves as a software medium, and fault information of bad sectors destroyed by the pinholes is recorded. The bad sector address is read and stored on the floppy disk, and when the floppy disk is accessed, the fault information of the bad sector destroyed by the pinhole is read out and compared with the fault information stored in advance. A method for preventing unauthorized use of software is obtained, which is characterized in that a floppy disk is provided with software that is accessible if the floppy disc matches the software, and is inaccessible if the floppy disc does not match.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, and is a logic flow diagram for comparing and checking failure information read from a bad sector with previously stored failure information of the bad sector.

A pinhole is intentionally drilled in any readable location on a floppy disk to create a bad sector. Bad sector addresses, the number of bad sectors, and their bit patterns are forcibly read out and stored on a floppy disk as failure recognition information, and paid software is recorded on this medium.

When you try to run the software on this floppy disk, the software with the logic shown in Figure 1 is first started, reads the fault recognition information from the bad sector on the floppy disk, and combines it with the previously stored fault recognition information. Verify. If the verification results match, access to the paid software on the floppy disk is allowed. If there are no bad sectors or if they do not match, the floppy disk will no longer be accessible. Even if the floppy disk is accessed again, only the software having the logic shown in FIG. 1 will be activated, and the paid software on the floppy disk will not be executed.

That is, according to the method of this embodiment, even if user A copies the software X that he/she purchased (a 70 disk disk serving as a medium is Fl) to user B's floppy disk F2, the 70 disk drive Tupee disk F2 cannot be accessed because there is no pinhole and the failure recognition information does not match. Even if you make a pinhole in floppy disk F2, it is impossible to make a pinhole with the same fault recognition information in the same position as on 70 disk Ft, and software X must be executed even if it is copied to floppy disk F2. I can't. This means that software X can only be executed on floppy disk Fl.

〔Effect of the invention〕

As explained above, the present invention includes a software copy check program on a floppy disk, and by comparing it with pre-stored failure recognition information,
If the software is illegally copied, the paid software cannot be executed, which is effective in preventing unauthorized use of the paid software.

[Brief explanation of the drawing]

FIG. 1 is a logic flow diagram for checking failure recognition information read from a bad sector and previously stored failure recognition information of the bad sector according to an embodiment of the present invention.・', that's it.

Claims (1)

[Claims] In a computer system having a floppy disk, one or more pinholes are drilled at any accessible location on the floppy disk that serves as a software medium, and fault information and bad sector addresses of bad sectors destroyed by the pinholes are read out. When the floppy disk is accessed, the fault information of the bad sector destroyed by the pinhole is read out, and if it matches the fault information stored in advance, it is accessed. A method for preventing unauthorized use of software, characterized in that a floppy disk is provided with software that is permitted and cannot be accessed if they do not match.