WO2003046910A1 - Unauthorized copy recording medium use preventing method, and information recording medium to which the method is appied - Google Patents

Abstract

An unauthorized copy recording medium use preventing method for making it impossible to use an unauthorized copy. When a normal part recorded on an information recording medium (15) is copied to a copy-destination information recording medium (16), so as to adapt to the scheme that the normal record capacity value (Ch) is simultaneously written in a record capacity value storage area (28b) provided on the copy-destination information recording medium (16), unique information (M) other than the normal record capacity value (Ch) is recorded in a record capacity storage area (28a) provided on the information record medium (15), reference information of the same content as that of the unique information (M) is recorded in an area (29) of the information recording medium (15), a check program (30) for reading the information recorded in the record capacity value storage area, comparing the information with the reference information, and judging the copying to be an unauthorized copying if the information agrees with the reference information is recorded in the information recording medium (15), and thus the information recording medium (16) copied is checked by using the check program (30).

Description

 Details

Method of preventing use of unauthorized copy recording medium and information recording medium with countermeasures

Technical field

 The present invention relates to a method for preventing the use of an illegal copy recording medium and an information recording medium on which measures are taken, and more particularly, to a method for preventing the use of an illegal copy medium for an information recording medium such as a compact disk (hereinafter referred to as a CD). The present invention relates to a method and an information recording medium on which measures are taken.

Background art

 Games and other programs are developed by specialized programmers, etc., with time and expense, and their copyrights are legally protected. Recording media such as CD-ROMs (compact disk-read only memory) on which programs such as the game are recorded are generally provided for a fee, and CD-ROMs and the like obtained by paying a fee are provided. There is no problem with the use of this recording medium as long as only the recording medium itself is used.

 However, recently, the contents of this CD-ROM have been copied onto a recording medium such as a CD-R (Compact Disk-Recordable) recordable by the user, and illegal use has been carried out. In some cases, there is no copyright protection, such as copying from a single CD-ROM to multiple CD-Rs. Therefore, in order to prevent such copying, many technologies have been developed and put into practical use, such as the technology described in Japanese Patent Application Laid-Open No. 2000-231759.

By the way, a personal computer or the like to which a CD-ROM drive is connected is used to play back a CD-ROM, and illegal copying from a CD-ROM to a CD-R uses a CD-ROM drive and a CD-R drive. A connected personal computer or the like is used. Fig. 7 shows the structure of such a bathocon. In Fig. 7, 1 is the central processing unit (CPU), 2 is the hard disk drive (HDD), and 3 is the input control. Control unit, 4 is an output control unit, 5 is a keyboard, 6 is a CD-R0M drive, 7 is a CD-R drive, and 8 is a display (CRT).

 One method for preventing the above illegal copying is to provide a defective portion on a CD-ROM that cannot be read by a personal computer or the like to which such a CD-ROM drive or CD-R drive is connected.

 Here, the defective portion is not only a literal defect such as a flaw, dirt, deterioration, or the like that deviates from the physical characteristics stipulated by the standard of the information recording medium, but also a portion having a low read signal level or a recorded portion. This is a broad concept that includes physical formats and logical formats that are different from the standard, or those in which the recorded file format is different from the prescribed type, and that cannot be read normally by the above-mentioned personal computer etc. Are all included in this concept of defective part. FIG. 8 (a) shows an example of the arrangement of information recorded on a properly manufactured CD-ROM 31 provided with such a defective portion 43. FIG. In this case, a part of the information includes a program 41 for avoiding a defective portion. In this example, the program starts from n address 42 immediately before the defective portion 43 shown in FIG. It has the content to jump to n + 1 address 44 immediately after.

 If this legitimately manufactured CD-ROM 31 is read and executed by the personal computer shown in FIG. 7, it can be executed normally by the program 41 for avoiding a defective portion. Then, what happens when this CD-ROM31 is copied to a CD-R using the personal computer shown in Fig. 7? For such copying, usually, copy tool software installed in a personal computer or the like in FIG. 7 is used. This copy tool software reads the information recorded on the CD-ROM 31 and writes it on the CD-R, but the information recorded on the CD-ROM 31 is data Regardless of whether they are handled as data. Therefore, the personal computer attempts to read the defective portion 43, but cannot read the defective portion 43, so that an error occurs and the reading of the CD-ROM 31 is stopped. Cannot be copied, thus preventing copying to CD-R.

However, when copying from CD-ROM 31 to CD-R, A method of illegitimate copying has been devised by ignoring an unacceptable defective portion and copying only a portion which can be read normally. FIG. 8 (b) shows the CD—R〇M 3 1 when the information of the CD—R〇M 31 in the above example, which is a copy unit, is copied to the CD—R 32 that is the destination of the copy. This shows the arrangement of the information in (2). In this figure, although the CD-R 32 does not have the defective portion 43, the program 41 for avoiding the defective portion operates normally, so that it can be read and executed normally.

 Thus, it has become difficult to completely prevent unauthorized copying from CD-ROM to CD-R. Therefore, if the idea is changed and the illegally copied copy is made unusable, even if it is illegally copied, the illegal copy will no longer make sense and eventually the illegal copy It is thought that users can be encouraged not to do so.

 This investigation was based on this idea, and even if an illegal copy was made from CD-R〇M to CD-R, the copied product CD_R created by this illegal copy was used. It is intended to provide a method of preventing the use of unauthorized copy recording media and an information recording medium with the countermeasures to prevent the use of unauthorized copy recording media.

Disclosure of the invention

Standards are established for CDs such as CD-ROM, CD-R, and CD-RW, which are information recording media, and information is recorded on CD-ROMs based on these standards. . According to this standard, the entire recording capacity value of information recorded on this CD-R〇M is stored in a predetermined position of the CD-ROM. This also applies to writing information to an unwritten CD-R, and the above-mentioned copy tool software generally uses this mechanism. Accordingly, the present invention provides a method for copying the entire recording capacity of information copied to a CD-R in a predetermined position common to the CD-ROM when the CD-ROM is illegally copied to the CD-R. It is based on the fact that the value is written, and the predetermined position of the regular CD_R0M is Except where this total recording capacity value is originally stored, exceptionally, unique information other than this total recording capacity value is recorded, and a regular CD-ROM or a CD-R copied from this CD-ROM is used. At the time of use, the information recorded in the predetermined position is read, and it is determined whether or not the information is the above-mentioned unique information, thereby determining whether or not the information has been illegally copied. is there.

 That is, the first method of preventing use of an unauthorized copy recording medium according to the present invention is characterized in that at least the normal part of the information recording medium that can be read by the reading unit operating under the operating environment of the convenience where the unauthorized copying is performed is operated under the above operating environment. When the data is copied to the copy destination information recording medium by the writing section that operates in step 2, the normal recording capacity value, which is the total recording capacity value of the normal portion, is simultaneously stored in the recording capacity value storage area provided in the copy destination information recording medium. In order to conform to the writing mechanism, unique information other than the normal recording capacity value is recorded in the recording capacity value storage area provided on the information recording medium as well as the copy destination information recording medium. In addition, reference information having the same content as the unique information is recorded in a normal portion of the information recording medium. Further, information recorded in a recording capacity value storage area provided on the information recording medium and the reference information are When the information recording medium is used, it is read out and compared, and if it does not match, a check program for judging that an illegal copy has been made is recorded in a normal portion of the information recording medium. Then, the check program copied to the copy destination information recording medium at the time of copying makes a determination when the copy destination information recording medium is used. The first illegal copy recording medium use prevention method of the present invention has such features.

According to the first method for preventing the use of an illegal copy recording medium, when the information recording medium is used, the information recorded in the recording capacity value storage area and the reference information are read and compared. You. At this time, if the information recording medium is a regular one, the unique information is recorded in the storage capacity value storage area, and since the unique information and the reference information have the same content, the storage capacity value storage area has There is no discrepancy between the recorded information and the reference information. However, if the information recording medium has been illegally copied, the information recorded in the recording capacity value storage area is a normal recording capacity value which is the total recording capacity value of the normal portion of the information recording medium. Therefore, the storage capacity value storage error When the information recorded in the information recording medium is compared with the reference information, the reference information has the same content as the unique information, and the unique information is information other than the total recording capacity value of the normal portion of the information recording medium, and Since the information is different from the total recording capacity value, the information recorded in the recording capacity value storage area does not match the reference information. Therefore, it can be determined that an illegal copy has been made.

 In the first method for preventing the use of an unauthorized copy recording medium, the information recording medium is provided with a defective portion, and the unique information and the reference information include a normal recording capacity that is a total recording capacity value of a normal portion of the information recording medium. The total recording capacity value obtained by adding the value and the defective recording capacity value that is the capacity value of the defective portion may be used.

 That is, as a second method for preventing use of an unauthorized copy recording medium, in the first method for preventing use of an unauthorized copy recording medium, a defective portion which cannot be read normally by the reading unit is provided in the information recording medium. The total recording capacity value, which is the sum of the defective recording capacity value, which is the capacity value of the defective portion, and the normal recording capacity value, which is the total recording capacity value of the normal portion of the information recording medium, is used as the unique information. A method for preventing the use of unauthorized copy recording media is configured using the capacity value as reference information.

 In the second method for preventing the use of an illegal copy recording medium, when the information recording medium is used, the information recorded in the recording capacity value storage area and the reference information are read and compared. At this time, if the information recording medium is a regular one, the storage capacity value storage area includes a defective recording capacity value which is a capacity value of a defective portion of the information recording medium and a normal recording capacity which is a total recording capacity value of a normal portion. The total recorded capacity value is recorded as the sum of the values, and the total recorded capacity value is used for the reference information.Therefore, the information recorded in the storage capacity storage error does not match the reference information. Does not occur. Therefore, it is understood that the information is not an illegally copied one, that is, it is a legitimate information recording medium.

 In addition, even if an attempt is made to illegally copy this legitimate information recording medium, the information recording medium has a defective part. In general, the defective part cannot be read during the illegal copy, so that an error occurs and the illegal copy is prevented. .

However, if illegal copying is performed by any means, When the used information recording medium is used, the information recorded in the recording capacity value storage area and the reference information are read and compared. However, since the information recording medium is copied, the information recorded in the recording capacity value storage area is different from the normal recording capacity value, which is the total recording capacity value of only the normal part without the capacity value of the defective part. Has become. On the other hand, since the reference information is the total recording capacity value obtained by adding the defective recording capacity value and the normal recording capacity value, the information recorded in the recording capacity value storage area does not match the reference information, and In the second method for preventing the use of an unauthorized copy recording medium, the normal recording capacity value, which is the total capacity of the normal portion of the information recording medium, is actually examined instead of the reference information. The proof recording capacity value obtained by adding the defective recording capacity value to the result may be used. That is, as the third method for preventing the use of an unauthorized copy recording medium, in the second method for preventing an unauthorized copy recording medium, When a recording medium is used, a normal portion of the information recording medium is actually read to determine a normal recording capacity value, and the normal recording capacity value and the defective recording capacity value are summed to obtain a proof recording capacity value. The generated verification recording capacity value generation program is recorded on the normal part of the information recording medium, and unauthorized copy recording is performed using the verification recording capacity value generated by the verification recording capacity value generation program instead of the reference information. A method for preventing medium use is configured.

 This method is based on the fact that a normal portion of an information recording medium is actually read, a normal recording capacity value, which is the total recording capacity value, is checked, and a verification recording capacity value generated using the result is used instead of the reference information. Other than the above, the rest is the same as the above-mentioned method of preventing use of an illegally copied recording medium. The contents of the demonstration recording capacity value are the same as the total recording capacity value obtained by adding the normal recording capacity value and the defective recording capacity value, and have the same contents as the reference information. Therefore, it has the same effect as the above-described second method for preventing use of an illegal copy recording medium.

Further, it is possible to manufacture an information recording medium in which measures having the contents of the above-mentioned methods for preventing the use of an illegal copy recording medium are taken. These information recording media are as follows: It is something.

 The first information recording medium that has been subjected to measures to prevent use of an illegal copy recording medium is an information recording medium provided with a normal portion that can be read by a reading unit that operates at least in an operating environment of a computer in which an illegal copy is performed. When the normal part is copied to the copy destination information recording medium by the writing unit operating in the operating environment, the normal recording capacity value, which is the total recording capacity value of the normal part, is also provided in the copy destination information recording medium. The unique information other than the normal recording capacity value is recorded in the recording capacity value storage area provided in the same way as the copy destination information recording medium so that it conforms to the mechanism that is written to the specified storage capacity value storage area. In addition, the reference information of the same content as the unique information is recorded in its own normal part, and the information recorded in its own storage capacity value storage area, The use of an illegal copy recording medium characterized in that a check program for reading out and comparing quasi-information when used by itself and determining that an illegal copy has been made if they do not match is recorded in its normal part. This is an information recording medium on which preventive measures have been taken.

 The second information recording medium which has been subjected to the countermeasures for preventing the use of an illegal copy recording medium has a defective portion which cannot be read normally by the above reading section, and a defective recording capacity value which is a capacity value of the defective portion, and a normal value. The total recording capacity value, which is the sum of the normal recording capacity value, which is the total recording capacity value of the portion, is used as the unique information, and measures are taken to prevent the use of unauthorized copy recording media in which this total recording capacity value is used as reference information. This is an information recording medium.

 When the third information recording medium that has been used to prevent the use of an illegal copy recording medium is used, it reads the normal part and checks the normal recording capacity value when it is used, and checks the normal recording capacity value and the defective recording capacity value. The verification recording capacity value generation program that generates the verification recording capacity value by adding the verification recording capacity value generated by the verification recording capacity value generation program instead of the reference information This is an information recording medium with measures to prevent the use of unauthorized copy recording media.

The fourth information recording medium that has been protected against the use of unauthorized copy recording media uses the above information recording media as FD, CD, CD-ROM, CD-R, CD-RW, DVD , DVD-R, DVD-RW, DVD-RAM, MO, MD, HDD, semiconductor recording media, or any one of these devices virtually configured in a computer.

 When these information recording media are used, they have the effects of the above-described methods for preventing the use of unauthorized copy recording media. BRIEF DESCRIPTION OF THE FIGURES

 Fig. 1 shows the layout of information recorded on a properly manufactured CD-ROM, and Fig. 1 (b) shows the information recorded on a copied CD-R in the first embodiment. It is a layout diagram of a report.

 FIG. 2 is a flowchart showing a check operation of the first embodiment. FIG. 3 shows the arrangement of information recorded on a properly manufactured CD-ROM in the second embodiment, and (b) shows the information recorded on a copied CD-R. It is a layout diagram of a report.

 FIG. 4 is a flowchart showing a check operation of the second embodiment. Fig. 5 shows the arrangement of information recorded on a properly manufactured CD-ROM, and Fig. 5 (b) shows the information recorded on a copied CD-R in the third embodiment. It is a layout diagram of a report.

 FIG. 6 is a flowchart showing a check operation of the third embodiment. FIG. 7 is a configuration diagram of a personal computer used for executing a CD-ROM and illegally copying a CD-ROM to a CD-R.

 Fig. 8 shows the layout of the information recorded on a properly manufactured CD-ROM, and (b) shows the layout of the information recorded on the copied CD-R in the conventional example. FIG. BEST MODE FOR CARRYING OUT THE INVENTION

Next, embodiments of the present invention will be described in detail with reference to the drawings. In the first embodiment and the second embodiment, it is assumed that a defective portion is provided on the CD-ROM as an information recording medium. In particular, a check program utilizing the recording capacity value of the CD-R0M is used to prevent the use of an illegally copied recording medium. Further, the third embodiment relates to a method of preventing the use of an illegal copy recording medium without providing a defective portion on a CD-ROM. As described above, a personal computer or the like to which a CD-ROM drive is connected is used to reproduce the CD-ROM. Unauthorized copying from the CD-ROM to the CD-R is performed by using the CD-ROM drive and the CD-R0M drive. — A computer connected to the R drive is used. FIG. 7 shows the configuration of such a personal computer. In each of the embodiments described below, a personal computer having the configuration shown in FIG. 5 is used for executing the CD-ROM and illegally copying the CD-ROM to the CD-R.

 FIG. 1 (a) shows an arrangement of information recorded on a properly manufactured CD-ROM used in the first embodiment. This legitimately produced CD-ROM serves as a unit for illegal copying. In Fig. 1 (a), 1 1 is the CD-ROM that is properly manufactured, 2a is the storage capacity value storage area, 21 is the reference information storage area, 22 is the check program, and 23 is the defective part. Avoidance program, 24 is n address of this CD-ROM 11, 25 is defective part, 26 is n + 1 address of this CD-ROM 11. Then, the CD-ROM 11 1 is stored in a part other than the storage capacity value storage area 20 a, the reference information storage area 21, the check program 22, the defective part avoidance program 23, and the defective part 25. The main program (not shown) is recorded.

 As described above, the defective portion 25 is not only a literal defect such as a scratch, dirt, or alteration that deviates from the physical characteristics stipulated by the CD standard, but also a portion having a low read signal level or a recorded portion. This is a wide concept including physical formats and logical formats that differ from the standard, or those in which the recorded file format is different from the prescribed type. Are all included in this concept of defective part. In the first embodiment, the defective portion 25 is an unrecorded portion where nothing is recorded.

As described above, immediately before the defective portion 25 is the address n of the CD-ROM 11 that has been manufactured properly, and immediately after the defective portion 25, the n + 1 of this CD—R〇M l 1 Address. When this CD-ROM 11 is read and executed, it is necessary to prevent the defective part 25 from being read. The defective part avoiding program 23 is a program for avoiding the defective part 25. Yes, this CD-ROM 11 has a jump instruction from address n to address n + 1. The defective portion avoiding program 23 is used when executing the main program.

 In FIG. 1 (a), C 1 is the recording capacity value from the beginning of the information recorded on this officially manufactured CD—ROM 11 to immediately before the defective portion, and C 2 is the defective portion. Is the recording capacity value when normal information is recorded in the defective portion 25, and C3 is recorded on this CD-ROM 11 immediately after the defective portion. Indicates the recording capacity value up to the end of the information. Therefore, the normal recording capacity value Cr = Cl + C3, which is the total recording capacity value of the normal portion of the CD-ROM 11 not including the defective portion, and the defective recording capacity value Cw = C2 of the defective portion It is.

 As described above, standards are established for CDs such as CD-ROM11, CD_R, and CD-RW, which are information recording media, and recording of information on CD-ROM11 conforms to this standard. It is based on. According to this standard, the normal recording capacity value, which is the total recording capacity value of the information recorded on the CD-ROM 11, is stored in a predetermined position of the CD-ROM 11. This applies to all CDs other than CD-ROM 11, such as CD_R and CD-RW. The above-described storage capacity value storage area 20a in FIG. 1 corresponds to this predetermined position. In the first embodiment, the storage capacity value storage area 20a has a normal storage capacity value Cr that is the total storage capacity value of the normal portion of the CD-R〇Ml1 that has been properly manufactured, The total recording capacity value Ct = Cr + Cw = C1 + C2 + C3, which is the sum of the defective recording capacity values Cw of the portions, is recorded.

The check program 22 is a program for determining whether or not the information recording medium on which the check program 22 has been recorded has been illegally copied. That is, in the reference information storage area 21, the above total recording capacity value Ct is recorded as reference information used as a comparison reference. The program 22 reads the value recorded in the storage capacity value storage area 20a and this total storage capacity value Ct, compares them, determines whether they match, and if they do not match, it is illegally copied. It has an algorithm to determine that The check program 22 is executed prior to the execution of the main program when reading and executing the information recording medium in which the check program 22 is recorded.

 The above officially manufactured CD-ROM 11 must be able to be used normally when read out and executed. Therefore, this point will be discussed next. When the CD-ROM 11 manufactured as described above is read and executed by the personal computer shown in FIG. 7, first, the check program 22 is executed. FIG. 2 is a flowchart showing a check operation by the check program 22. In FIG. 2, the check program 22 is first recorded on the medium on which the check program 22 is recorded, that is, the recording capacity value storage area 20a of the CD-ROM 11 that is properly manufactured. The read information is read (S1). Next, the reference information in which the total recording capacity value Ct, which is the sum of the normal recording capacity value Cr that is the total recording capacity value of the normal portion and the defective recording capacity value Cw of the defective portion, is recorded as the reference information. The total recording capacity value Ct is read from the storage error 21 (S2A). Then, the information recorded in the read storage capacity value storage area 20a is compared with the total storage capacity value Ct (S3A). Since the total storage capacity value Ct is recorded in the storage capacity value storage area 20a as described above, no discrepancy occurs as a result of the comparison (S4). Therefore, the check program 22 determines that the CD-ROM 11 is not illegally copied (S5). Then, the main program is executed next. At this time, since the defective part avoiding program 23 operates, the defective part 25 is not read out, and the main program can be executed normally. it can.

Next, using the personal computer shown in Fig. 7 and the copy tool software installed on the personal computer, the above-mentioned copy source CD-R0Ml1 to the copy destination CD- Consider copying to R. This copy is stored on the CD-ROM drive 6 of the personal computer shown in Fig. 7 Insert ROM 11 and load an unwritten CD-R into CD-R drive 7. As described above, the copy tool software used for this copy reads information recorded on the CD-ROM 11 and writes it on the CD-R, but is recorded on the CD-ROM 11 Information is treated as data, whether it is a program or data. For this reason, the personal computer shown in Fig. 7 first reads the information on the CD-ROM 11, but this CD-ROM 11 has a defective part 25, which is a non-recorded part. Part cannot be read. As a result, an error occurs and reading is stopped, so writing to CD-R cannot be performed. That is, illegal copying becomes impossible.

 Normally, it should not be possible to write to CD-R as described above. However, by modifying copy tool software, etc., ignore defective parts that cannot be read and copy only those parts that can be read normally. The one that has been made appears. In this case, copying to CDR is performed. FIG. 1 (b) shows an arrangement of information of the CD_R copied in this way. In FIG. 1 (b), 12 is the copied CD-R. As can be seen from Fig. 1 (b), the copy was made by ignoring the defective part 25 of the CD-ROM 11 that was manufactured properly. It is missing. When recording on CD-R12, as described above, the recording capacity value storage area 20b of CD-R12 has the total recording capacity value of the information recorded on this CD-R12. At this time, the defective recording capacity value Cw of the defective portion that cannot be read from the CD-ROM 11 cannot be determined, and the normal recording capacity value is the total recording capacity value of the normally read portion. Only the value Cr is known. Therefore, the total recording capacity value C g = C r = C l + C 3 of the information recorded on the CD-R 12 is stored in the recording capacity value storage area 20 b of the CD-R 12.

Next, it will be examined whether or not the above-mentioned CD-R12 copied from the CD-ROM 11 that has been properly manufactured can be read and executed. When the above CD-R12 is read and executed by the personal computer shown in Fig. 6, first, the check program 22 shown in Fig. 1 (b) is executed, and the recording capacity value of this CD-R12 is firstly executed. Storage area 2 0 Read the information recorded in b (S1). Next, the total storage capacity value Ct, which is the reference information recorded in the reference information storage area 21, is read (S 2 A) and compared with the information recorded in the storage capacity value storage area 20 b. (S3A). As described above, the total recording capacity value Cg of the information recorded on CD-R12 is recorded in the recording capacity value storage area 20b, and this Cg is the same as the normal recording capacity value Cr. Therefore, since the total recording capacity value is different from the total recording capacity value Ct, the comparison results in a mismatch (S4). Therefore, the check program 22 determines that the CD-R has been illegally copied (S6). Therefore, the use of this CD—R12 can be prevented.

Next, a second embodiment will be described. FIG. 3 (a) shows the arrangement of information recorded on a properly manufactured CD—R0M13 used in the second embodiment. FIG. 3 (b) Shows the location of the information on CD-R 14 that has been illegally copied from this CD-ROM 13. In FIG. 3 (a), in the second embodiment, instead of the reference information storage area used in the first embodiment, a proof recording capacity value generation program 27 is recorded on the CD-ROM 13, Except for the above, the information is exactly the same as the information recorded on the CD-ROM 11 which is properly manufactured in the first embodiment. FIG. 4 is a flowchart showing a check operation by the check program 22 and the verification recording capacity value generation program 27 in the second embodiment. In FIG. 4, the check program 22 initially has a storage capacity value storage area 20a (20) of the CD-ROM 13 (or CD-R14) as a medium on which the check program 22 is recorded. The information recorded in b) is read (S1). Next, the normal recording capacity value, which is the total recording capacity of the medium on which the check program 22 is recorded, is independently checked, and the verified recording capacity value C is calculated by adding the defective recording capacity value Cw to the calculated value. Find e (S2B). Then, the total verified storage capacity value Ce is compared with the value stored in the storage capacity value storage area 20a (20b) (S3B). Subsequent processing is the same as in the first embodiment. Then, even if the CD-ROM 11 is properly manufactured, the CD-RO In the case of CD-R12 copied from M11, since the total recording capacity value is known from the part that can be read normally, this value includes the defective part of the CD-ROM11 that was manufactured properly. It is the same as the total recording capacity value Cr of the normal part that does not exist. Therefore, the proved recording capacity value C e = C r + C w = C l + C 2 + C 3 is equal to C t. As a result, the operation of the second embodiment is exactly the same as that of the first embodiment. Therefore, the effect is exactly the same as in the first embodiment.

 Next, a third embodiment will be described. FIG. 5 (a) shows an arrangement of information recorded on a CD-R0M which is properly manufactured and used in the third embodiment. In FIG. 5 (a), reference numeral 15 denotes a CD-ROM which has been properly manufactured, reference numeral 28a denotes a storage capacity value storage area, reference numeral 29 denotes a reference information storage area, and reference numeral 30 denotes a check program. This CD-ROM 15 does not have the defective portion provided in the CD-ROM 11 of the first embodiment or the CD-ROM 13 of the second embodiment. Therefore, all are normal parts, and the total recording capacity is the same as the normal recording capacity value Cr which is the total recording capacity of the normal part in the first embodiment. The main program (not shown) of the CD-ROM 15 is recorded in a portion other than the recording capacity value storage area 28a, the reference information storage area 29, and the check program 30, in the third embodiment, The recording capacity value storage area 28a of the CD-ROM 15 that is properly manufactured stores unique information other than the normal recording capacity value Cr, which is the total recording capacity value of the CD-ROM 15. I have. The specific information may be any information other than the normal recording capacity value Cr, which is the total recording capacity value of the CD-ROM 15, and may be, for example, an alphabet, a number, a symbol, or a combination thereof. Good. In the third embodiment, the letter M is used as the unique information. The reference information is stored in the reference information storage area 29. The content of the reference information is exactly the same as the unique information, and is an alphabetical letter M.

When the above officially manufactured CD-ROM 15 is read and executed by the personal computer shown in FIG. 7, first, the check program 30 is executed. FIG. 6 is a flowchart showing a check operation by the check program 30. No. In FIG. 6, the check program 30 is first recorded on the medium on which the check program 30 is recorded, that is, the recording capacity value storage area 28 a of the CD-ROM 15 that is properly manufactured. Read the information (S1). Next, the reference information recorded in the reference information storage area 29 is read (S2C). Then, the information recorded in the read storage capacity value storage area 28a is compared with the reference information (S3C). In the CD-ROM 15, the information recorded in the storage capacity storage area 28 a is unique information and is M in alphabet. Also, since the reference information has the same content as the unique information and is also an alphabetic M, no inconsistency occurs as a result of the comparison (S4). Therefore, the check program 22 determines that the CD-ROM 15 is not illegally copied (S5). There, the execution of the main program is allowed.

 Next, when this legitimately produced CD-ROM 15 is copied to a CD-R using the personal computer shown in Fig. 7 and the copy tool software installed on it, the CD-ROM 15 becomes Can be copied because there is no defective part. At the time of this copy, the recording capacity value storage area of the copy destination CD-R contains the total recording capacity value Ch of the information recorded on this CD-R. Fig. 5 (b) shows the arrangement of the information recorded on the copied CD-R16. In the recording capacity value storage area 28b, the total recording capacity value Ch of the information recorded on the CD-R 16 is recorded. This is the total recording capacity value of the CD-ROM 15 It is exactly the same as a certain normal recording capacity value Cr.

Next, it is examined whether or not the above copied CD-R 16 can be read and executed. When the above-mentioned CD-R16 is read and executed by the personal computer shown in FIG. 7, first, in FIG. 6, the above-described check program 30 shown in FIG. 5 (b) is executed. The information recorded in the storage capacity value storage area 28b of 6 is read (S1). Next, the reference information recorded in the reference information storage area 21 is read (S2C), and the information recorded in the storage capacity value storage area 28b is compared with the reference information (S3C). ). As described above, the information recorded in the recording capacity value storage area 28b is the total recording capacity value C of the information recorded on CD-R16. h, that is, the normal recording capacity value Cr which is the total recording capacity value of the CD-ROM 15. On the other hand, since the reference information is an alphabetical letter M, the comparison results in a mismatch (S4). Therefore, the check program 22 determines that the CD-R has been copied illegally (S6). Therefore, the use of CD-R16 can be prevented.

 In the third embodiment, as described above, any information may be used as the unique information to be recorded in the recording capacity value storage error, but the normal recording, which is the total recording capacity value of the CD-ROM 15, may be used. The capacitance value cannot be used. Because, as can be seen from the above description, the recording capacity value storage area of the CD-R copied from the CD-ROM that was manufactured properly contains the normal recording capacity that is the total recording capacity value of the normal part of the CD-ROM. Since the value is stored, if the normal recording capacity value is used as the unique information, if the data is illegally copied, the information and standard recorded in the recording capacity storage area of this illegally copied CD-R This is because a comparison with information does not result in inconsistency and an error in the judgment.

 In each of the embodiments described above, the case where a CD such as a CD-ROM or a CD-R is used as an information recording medium has been described. However, as a standard of the information recording medium, or as a common rule applied to the information recording medium, However, as long as there is a provision at a predetermined position of the information recording medium to accommodate the total recording capacity value of the information recorded on the information recording medium, the above-described operation can be performed on any information recording medium. The content of the example can be applied. These information recording media include CD-ROM and CD-R, as well as FD, CD-RW, DVD, DVD-R, DVD_RW, DVD-RAM, M〇, MD, HDD, semiconductor recording media, or These devices, etc., which are virtually configured within a short period of time are considered.

In addition, it is possible to manufacture the information recording medium as described above in which the countermeasures against the use of the illegal copy recording medium described in the above embodiment are taken. Has the effect of the recording medium use prevention method Industrial applicability

 According to the first method for preventing the use of an unauthorized copy recording medium, when reading the information recording medium, the information stored in the storage capacity value storage area is compared with the unique information and the reference information having the same contents. At this time, if the information recording medium is a legitimate one, the information stored in the storage capacity storage area and the reference information do not match because the storage capacity storage area contains the unique information. . However, if the information recording medium has been illegally copied, the value stored in the storage capacity value storage area is the normal storage capacity value and not unique information, so the information stored in the storage capacity value storage area Mismatch with the reference information, and it can be determined that unauthorized copying has been performed.

 In the second method for preventing the use of an unauthorized copy recording medium, when reading the information recording medium, the information stored in the recording capacity value storage area is compared with the reference information having the same content as the total recording capacity value. At this time, if the information recording medium is a regular one, the total storage capacity value is stored in the storage capacity storage area, so that the information stored in the storage capacity storage area does not match the reference information. Does not occur. However, if the information storage medium is illegally copied, the information stored in the storage capacity storage area is the normal storage capacity of only the normal part excluding the capacity of the defective part. Inconsistency occurs between the information contained in the data and the reference information, and it can be determined that the data has been illegally copied.

 The third method for preventing the use of unauthorized copy recording media is that instead of using the reference information, the actual recording capacity of the information recording medium is actually checked, and the verification recording capacity value generated based on this is used. It has the same effect as the second method of preventing the use of an illegal copy recording medium, except that the method is different from the method of preventing the use of an illegal copy recording medium.

 Each of the first to fourth information recording media that has taken measures to prevent the use of unauthorized copy recording media has taken one of the first to third methods to prevent the use of unauthorized copy recording media. Each of them has the same effect as any of the first to third methods for preventing the use of unauthorized copy recording media.

Claims

Range of request 1. At least the normal part of the information recording medium that can be read by the reading unit operating under the operating environment of the computer where the illegal copying is performed is copied to the copy destination information recording medium by the writing unit that operates under the operating environment. At the same time, a normal recording capacity value which is the total recording capacity value of the normal portion is provided on the copy destination information recording medium.  0 In order to conform to the mechanism to be written in the storage capacity value storage area, unique information other than the normal storage capacity value is stored in the storage capacity value storage area provided in the information storage medium in the same manner as the copy destination information storage medium. And record  Reference information having the same content as the unique information is recorded in a normal portion of the information recording medium,  The information recorded in the recording capacity value storage area provided in the information recording medium and the reference information are read out and compared when the information recording medium is used. Recording a program on a normal portion of the information recording medium,  A method for preventing use of an unauthorized copy recording medium, wherein the check program copied to the copy destination information recording medium at the time of the copying performs the determination when the copy destination information recording medium is used.  2. A defective portion that cannot be read normally by the reading unit is provided on the information recording medium,  A total recording capacity value obtained by adding the defective recording capacity value that is the capacity value of the defective portion and the normal recording capacity value that is the total recording capacity value of the normal part of the information recording medium, as the unique information, 2. The method according to claim 1, wherein the total recording capacity value is used as the reference information. 3. At the time of use of the information recording medium, the normal portion of the information recording medium is read to check the normal recording capacity value, and the normal recording capacity value is combined with the defective recording capacity value to obtain a proof recording capacity value. The verification recording capacity value generation program to be generated is recorded in a normal portion of the information recording medium, and 3. The method according to claim 2, wherein the verification recording capacity value generated by the verification recording capacity value generation program is used instead of the reference information.  4. An information recording medium provided with a normal part that can be read by a reading unit that operates at least in an operating environment of a computer where illegal copying is performed,  When the normal part is copied to the copy destination information recording medium by the writing unit operating in the operating environment, at the same time, the normal recording capacity value which is the total recording capacity value of the normal part is recorded in the copy destination information recording medium. In order to conform to the mechanism for writing to the provided storage capacity value storage error, a unique storage capacity value other than the normal storage capacity value is provided to the storage capacity value storage error provided in the same manner as the copy destination information recording medium. Information is recorded and  Reference information of the same content as the unique information is recorded in the normal part of the own,  A check program for reading and comparing information recorded in the recording capacity value storage area provided therein and the reference information when the user himself / herself is used, and judging that an illegal copy has been made if they do not match. Is an information recording medium that has been protected from unauthorized copy recording media, characterized by being recorded in its normal part.  5. A defective portion which cannot be read normally by the reading section is provided, and a defective recording capacity value which is a capacitance value of the defective portion and a normal recording capacity value which is a total recording capacity value of the normal portion are added. The total recording capacity value is used as the unique information, and  5. The information recording medium according to claim 4, wherein said total recording capacity value is used as said reference information. 6. When itself is used, the normal portion is read to check the normal recording capacity value, and the normal recording capacity value is combined with the normal recording capacity value to generate a verification recording capacity value. The generated program is recorded in its normal part, 6. The information recording medium according to claim 5, wherein the verification recording capacity value generated by the verification recording capacity value generation program is used instead of the reference information.  7. FD, CD, CD-ROM, CD-R, CD-RW, DVD, DVD-R, DVD-RW, DVD_RAM, MO, MD, HDD, recording media made of semiconductors, or virtual within the convenience store 7. An information recording medium on which an unauthorized copy recording medium use prevention measure according to any one of claims 4 to 6 is used, wherein the information recording medium is configured as one of these devices configured as a unit.