JPH06302092A - Method for eliminating unauthorized copy - Google Patents

Abstract

(57) [Summary] [Object] To prevent illegally copied programs from being used in an information processing apparatus capable of using both a read-only disc-shaped recording medium and a rewritable disc-shaped recording medium. A disc-shaped recording medium that is loaded in an information processing device is discriminated in a read-only disc-shaped recording medium, and the disc-shaped recording medium is loaded in the information processing device only when the loaded disc-shaped recording medium is read-only. A program that causes processing to be performed according to the program recorded in the recording medium is recorded, and when the information processing device is loaded with the disk-shaped recording medium, the information processing device executes the program, and the loaded disk-shaped recording is performed. If the medium is rewritable, it is an error.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing apparatus, and more particularly to a method for excluding illegal copies of programs.

[0002]

2. Description of the Related Art Recently, a magneto-optical recording / reproducing device, a so-called mini disc (MD) device, which can use both a read-only type optical disc and a rewritable type magneto-optical disc, has been manufactured and sold.

[0003]

In the magneto-optical recording / reproducing apparatus of the type described above, since a rewritable type disc can be used, an illegal copy of a program can be easily made, and an illegal copy is made. It can operate even when a rewritable disc on which a program is recorded is loaded.

The present invention has been made in view of such a situation, and a program illegally copied in an information processing apparatus capable of using both a read-only disc-shaped recording medium and a rewritable disc-shaped recording medium. The purpose is to prevent the use of.

[0005]

According to the method for eliminating illegal copy of the present invention, a read-only disc-shaped recording medium can be used in an information processing apparatus which can use both the read-only disc-shaped recording medium and the rewritable disc-shaped recording medium. In addition, the type of the disc-shaped recording medium loaded in the information processing device is determined, and only when the loaded disc-shaped recording medium is read-only, the processing is performed according to the program recorded in the disc-shaped recording medium in the information processing device. The program to run (eg,
The program shown in FIG. 9 is recorded, and when the disc-shaped recording medium is loaded into the information processing device, the information processing device is caused to execute the program, and the loaded disc-shaped recording medium is rewritable type. When it is, it is characterized by making an error.

[0006]

According to the illegal copy elimination method of the present invention, when the disc-shaped recording medium is loaded in the information processing apparatus, the type of the loaded disc-shaped recording medium is discriminated and the loaded disc-shaped recording medium is reproduced. Only when it is dedicated, the information processing apparatus processes according to the program recorded in the disk-shaped recording medium, and when the loaded disk-shaped recording medium is a rewritable type, an error occurs and the processing cannot be performed any more.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of the configuration of an information processing apparatus to which the present invention is applied. The tablet 10 is a pressure-sensitive tablet that outputs data corresponding to the XY coordinate values of the position pressed by the user's finger or pen (see the pen 30 in FIG. 3). The output data of the tablet 10 is a microcomputer (hereinafter, abbreviated as microcomputer) 12
Is supplied to.

The microcomputer 12 includes a CPU 14 and this CP
ROM 16 in which programs used by U14 are stored in advance
A RAM 18 used as a work area, an external peripheral device, a timer 19 for outputting time information, and C
It is configured to include an input / output interface 20 that exchanges various data with the PU 14.

The magneto-optical recording / reproducing device 8 records the data supplied through the input / output interface 20 on the disc, and supplies the data reproduced from the disc to the input / output interface 20.

The LCD (liquid crystal display) driver 22 is
Based on the display data supplied from the microcomputer 12, L
A CD (liquid crystal display device) 24 is driven, whereby LC
The display content of D24 is controlled by the microcomputer 12.

FIG. 2 shows an example of the structure of the magneto-optical recording / reproducing apparatus 8 shown in FIG. Magneto-optical recording / reproducing apparatus (MDXD) of FIG.
8 is a system originally developed for use in personal audio equipment (portable type, stationary type, in-vehicle type). It is a read (playback) type optical disc having a diameter of 64 mm, and a rewritable MO (optical) type. Either a magnetic) disk or a partial ROM (hybrid) disk having a read / write (that is, rewritable) area and a read-only area is used as a recording medium in a cartridge. In the case of a read-only type optical disc that records data by the magnetic field modulation overwrite recording method, the read signal is detected by utilizing the diffraction phenomenon of light in the pit row of the target track, and in the case of a read / write type magneto-optical disc , The polarization angle of the reflected light from the target track (car rotation angle In the case of a partial ROM disk, the read signal is detected by utilizing the diffraction phenomenon of light in the pit row of the target track, and the read / write area is detected. On the other hand, the reproduction signal is detected by detecting the difference in the polarization angle (Kerr rotation angle) of the reflected light from the target track.

In the magneto-optical recording / reproducing apparatus 8 as described above, in the course of development as a personal audio apparatus, each circuit element is integrated and each mechanical component is optimized, and the overall size and weight of the apparatus is reduced. In addition, low power consumption enables battery operation. Furthermore, it has almost the same storage capacity (120 Mbytes) as the existing 3.5-inch MO disk drive, and the recording medium can be exchanged. It is possible to reduce the manufacturing cost of the device body and recording media,
From the track record of use as a personal audio device,
Reliability is also well proven.

The magneto-optical recording / reproducing apparatus 8 is controlled by the CPU 14 through the I / O interface 20, and the CP
When instructed to read by U14, the data of the disk is read and sent to the CPU 14, and when instructed to write by the CPU 14, the operation of writing to the disk is performed.

In the magneto-optical recording / reproducing apparatus shown in FIG. 2, the magnetic head 80 applies a modulating magnetic field according to the recording data to the disk 804 which is rotationally driven by the spindle motor 802 while the optical pickup 806 irradiates the laser beam.
The magnetic field modulation overwrite recording is performed along the recording tracks of the read / write area, that is, the rewriting area by applying the voltage from the optical disk 8, and the target track in the read-only area of the disk 804 is traced by the laser beam by the optical pickup 806, thereby The data is reproduced in a desired manner, and the target track in the read / write area of the disk 804 is traced with a laser beam by the optical pickup 806, whereby the data is reproduced magneto-optically.

The optical pickup 806 is composed of a laser light source such as a laser diode, optical components such as a collimator lens, an objective lens, a polarization beam splitter, a cylindrical lens, and a photodetector divided into a predetermined arrangement. The feed motor 81 is provided at a position facing the magnetic head 808 with the 804 in between.
Positioned by 0.

The optical pickup 806 is a disk 80.
4 when recording data on the magnetic head drive circuit 80
The magnetic head 808 is driven by 9 to irradiate a target track of the disk 804 to which a modulation magnetic field according to the recording data is applied, thereby performing data recording by thermomagnetic recording.

Further, the optical pickup 806 detects a focus error by, for example, an astigmatism method and a tracking error by, for example, a push-pull method by detecting the laser beam applied to the target track, and also the disk 804. When a reproduction signal is detected by utilizing the diffraction phenomenon of light in the pit row of the target track in the read-only area of, and when the data is reproduced from the read / write area of the disk 804, the polarization angle of the reflected light from the target track ( The reproduction signal is generated by detecting the difference in the car rotation angle).

The output of the optical pickup 806 is supplied to the RF circuit 812. The RF circuit 812 extracts the focus error signal and the tracking error signal from the output of the optical pickup 806, and the servo control circuit 814.
And the reproduced signal is binarized and supplied to the address decoder 816. Address decoder 816
Decodes the address from the supplied binarized reproduction signal and outputs it to the EFM / CIRC encoder / decoder 818, and also outputs the binarized reproduction data other than the binarized reproduction data related to the address to the EFM / CIRC. It is supplied to the encoder / decoder 818.

The servo control circuit 814 is composed of, for example, a focus servo control circuit, a tracking servo control circuit, a spindle motor servo control circuit and a sled servo control circuit.

The focus servo control circuit controls the optical pickup 806 so that the focus error signal becomes zero.
The focus control of the optical system is performed. The tracking servo control circuit controls the feed motor 810 of the optical pickup 806 so that the tracking error signal becomes zero.

Further, the spindle motor servo control circuit controls the spindle motor 802 so as to drive the disk 804 to rotate at a predetermined rotation speed (for example, a constant linear speed). Further, the sled servo control circuit moves the magnetic head 808 and the optical pickup 806 to the target track position of the disk 804 designated by the system controller 820 by the feed motor 810.

EFM / CIRC encoder / decoder 8
Reference numeral 18 denotes an encoding process for error correction, that is, a CI for the data supplied via the interface 800.
RC (Cross Interleave Reed-
In addition to performing the encoding process of Solomon code, the modulation process suitable for recording, that is, EFM (Eight)
to Fourteen Modulation) encoding processing is performed.

EFM / CIRC encoder / decoder 8
The encoded data output from 18 is supplied to the magnetic head drive circuit 809 as recording data. The magnetic head drive circuit 809 drives the magnetic head 808 so as to apply a modulation magnetic field according to the recording data to the disk 804.

When receiving a write command from the CPU 14 via the interface 800, the system controller 820 controls the recording position on the disk 804 so that the recording data is recorded on the recording track of the disk 804. This recording position is controlled by EFM
The system controller 804 manages the recording position on the disk 804 of the encoded data output from the CIRC encoder / decoder 818, and the system controller 820 outputs a control signal for designating the recording position of the recording track of the disk 804 to the servo control circuit. 814.

At the time of reproduction, the EFM / CIRC encoder / decoder 818 performs EFM demodulation processing and CIRC decoding processing for error correction on the inputted binarized reproduction data, and outputs the same to the interface 800. Output.

When receiving a read command from the CPU 14 via the interface 800, the system controller 820 controls the reproduction position with respect to the recording track of the disk 804 so that reproduction data can be continuously obtained. The control of the reproduction position is performed by managing the position of the reproduction data on the disc by the system controller 820 and supplying a control signal designating the reproduction position on the recording track of the disc 804 to the servo control circuit 814. .

FIG. 3 shows a compact information processing apparatus 100 in which all the components shown in FIG. 1 are housed in one case.
0 shows the appearance. The disk cartridge 102 (or 112) accommodating the disk 804 is the information processing device 1
000 slots 40. The tablet 10 is arranged on the screen of the LCD 24, and the coordinates of the point designated by the pen 30 are supplied to the microcomputer 12. An MD (disk) eject button 36 and a power button 38 are provided at the left end of the LCD 24 in front of the screen. When the eject button 36 is operated, the disk 804 contained in the cartridge is ejected from the slot 40, and when the power button 38 is operated, the power is turned on or off.

In the read-only type optical disc, an information signal is stored on a disc made of transparent plastic by a pit array formed by injection molding or the like, and a metal reflection film such as aluminum is deposited on the recording surface of the disc. , And is further covered with a protective film.

On the other hand, in the rewritable type magneto-optical disk, for example, a magneto-optical recording film (perpendicular magnetization film) made of a material such as TbFeCo is adhered on a disk made of transparent plastic, and the film is covered with a protective film. It has a different structure.

The optical reflectance of the read-only type optical disk and the rewritable type magneto-optical disk is about 0.2 when the read-only type optical disk is set to 1.

FIG. 4 is a front view of a disc cartridge for a read-only type optical disc, and FIG. 5 is a rear view thereof. In these figures, 102 denotes a cartridge as a whole, and 103 denotes a shutter plate. By moving the cartridge in the direction of the arrow in FIG. 3, the opening of the cartridge 102 is exposed and the internal disk 804 is exposed to the outside.

However, in the case of this reproduction-only type, as shown in FIG.
The quadrilateral region 104, which has no shutter opening and is slightly smaller than the outer shape of the cartridge 102, is lower than its surroundings, and for example, a label or the like including a picture showing recorded contents or a description part can be attached to this region 104. It is configured.

A shutter lock member 105 and a shutter return spring 106 are housed in the cartridge 102. When the cartridge 102 is inserted from the cartridge insertion port of the apparatus in the insertion direction shown in the drawing,
It is used to lock the shutter plate 103 in a state where the opening of the cartridge 102 is exposed and to close the shutter plate 3 again when the cartridge 102 is taken out from the apparatus.

Reference numeral 107 is an opening for inserting a spindle of a disk rotation drive motor of the magneto-optical recording / reproducing apparatus 8;
Reference numeral 09 is a recessed hole into which a positioning pin of the recording / reproducing apparatus is inserted when the cartridge 2 is inserted into the apparatus.

FIG. 6 is a front view of a disk cartridge 112 for a rewritable magneto-optical disk, and FIG. 7 is a rear view thereof. In this case, the cartridge 112 has shutter openings on both front and back surfaces. As shown in FIG. 3, when the cartridge 112 is inserted into the slot 40 in the direction of the arrow and the shutter plate 113 moves, the disks 804 stored on both sides are exposed. This cartridge 1
In the case of No. 12, there is no area 104 where the label like the cartridge 102 can be attached almost all over the front surface.
Others are the same as the cartridge 102, 115 is a shutter lock member, 116 is a shutter return spring, 117 is a spindle insertion opening of a disk rotation drive motor of a recording / reproducing apparatus, and 118 and 119 are concave portions into which positioning pins are inserted. It's a hole.

In the case of this example, the cartridge 10
The sizes of 2 and 112 are equal, and as shown in FIGS. 4 and 6, the horizontal and vertical lengths a and b are selected such that a is 72 mm, b is 68 mm, and thickness is 5 mm.

The disc cartridge 102 can identify the read-only type optical disc and the rewritable type magneto-optical disc.
It is possible to do this by detecting the identification recessed holes that are provided in the areas 112 and 112. The disc cartridge 102 for a read-only disc has only one identifying recessed hole 100a, and the disc cartridge 112 for a magneto-optical disc has two identifying recessed holes 100a and 100b.
To form. Thus, when the cartridge 102 or 112 is loaded in the apparatus, it is possible to identify which cartridge by detecting the number of identification recessed holes.

FIG. 8 shows the relationship between the disc type identifying recessed hole formed in the rewritable disc cartridge and its detecting device. The switch 120 is provided with a protruding piece 122 that is movable in the direction of the arrow, that is, in the direction perpendicular to the moving direction of the rewritable disk cartridge 112, by an external force. The protruding piece 122 protrudes when the identification recessed holes 100b and 100a of the cartridge 112 reach their positions, and the switch 120 generates a pulse in response to this. In the case of the rewritable disc cartridge 112, since there are two identification concave holes, the switch 120 outputs two pulses. Counter 124
Outputs the count value 2 by counting the pulses output from the switch 120. The disc type identification unit 126 determines from the output value of the counter 124 that the loaded disc is a rewritable type.

Read-only disc cartridge 102
When the disc is loaded, the switch 120 outputs only one pulse, the output value of the counter 124 becomes 1, and the disc type identification unit 126 determines that the loaded disc is read-only based on the output value of the counter 124. Judge as a type.

FIG. 9 is a flow chart showing the processing of the program recorded at the beginning of the read-only disc.
First, the CPU 14 inspects the type of the boot source disk via the disk type identification unit 126 shown in FIG. 8 (step S1). Then, when the boot source disc is a read-only disc (YES in step S2), CP
U14 executes the original program (step S
3) If the boot source disc is a rewritable disc instead of a read-only disc (N in step S2)
O), the CPU 14 performs error processing (step S).
4).

FIG. 10 shows an example of the error processing of FIG. In this example, the CPU 14 displays a message "This disc cannot be used" on the LCD 24 (step S11).

FIG. 11 shows another example of the error processing of FIG. In this example, the CPU 14 forcibly writes dummy data to the loaded disc (step S
21).

In the above-described embodiment, which cartridge is loaded is identified by detecting the number of the identifying recessed holes. However, it is possible to reflect light in the read-only type disc and the rewritable type disc. The rate is, as mentioned above, 1:
Since it is different from 0.2, it is possible to discriminate the two types of discs from the output of the optical pickup 806.

In the above embodiment, the data transfer between the RAM 8 and the input / output device such as the magneto-optical recording / reproducing device is performed under the control of the CPU 14, but the DMAC (D
direct Memory Access Controller
The DMAC may directly control the data transfer between the input / output device and the RAM 18 without using the CPU 14.

[0045]

According to the illegal copy elimination method of the present invention,
The type of the disc-shaped recording medium loaded in the information processing device is discriminated in the read-only disc-shaped recording medium, and the disc-shaped recording medium is recorded in the information processing device only when the loaded disc-shaped recording medium is read-only. A program for performing processing according to the loaded program is recorded, and when the disc-shaped recording medium is loaded in the information processing device, the type of the loaded disc-shaped recording medium is determined, and the loaded disc-shaped recording medium When the disk-shaped recording medium is a rewritable type, the information processing device performs processing according to the program recorded on the disk-shaped recording medium only when is read-only. Since it is not possible to use this function, it is possible to use both a read-only disc-shaped recording medium and a rewritable disc-shaped recording medium. Pirated program in the apparatus can be prevented from being used.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of an information processing apparatus to which an illegal copy elimination method of the present invention is applied.

FIG. 2 is a block diagram showing a configuration example of the magneto-optical recording / reproducing apparatus of FIG.

3 is a perspective view showing an example of an external configuration of the information processing apparatus of FIG.

4 is a diagram showing the surface of a read-only disc cartridge used in the magneto-optical recording / reproducing apparatus of FIG.

5 is a view showing the back surface of a read-only disc cartridge used in the magneto-optical recording / reproducing apparatus of FIG.

FIG. 6 is a view showing the surface of a rewritable disc cartridge used in the magneto-optical recording / reproducing apparatus of FIG.

7 is a view showing the back surface of a rewritable disc cartridge used in the magneto-optical recording / reproducing apparatus of FIG.

FIG. 8 is a diagram showing the relationship between a disc type identification hole formed in a rewritable disc cartridge and its detection device.

FIG. 9 is a flowchart showing processing of a program recorded on a read-only disc.

10 is a flowchart showing an example of the error processing of FIG.

11 is a flowchart showing another example of the error processing of FIG.

[Explanation of symbols]

 8 Magneto-optical recording / reproducing device 10 Tablet 12 Microcomputer 14 CPU 16 ROM 18 RAM 19 Timer 20 Input / output interface 22 LCD driver 24 LCD 30 Pen 100a, 100b Disc type identification concave hole 804 disc

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[Procedure amendment]

[Submission date] March 31, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 4]

[Figure 5]

[Figure 6]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 7]

[Figure 8]

[Figure 10]

FIG. 11

[Figure 9] ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] June 16, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

[0002]

2. Description of the Related Art Recently, a magneto-optical recording / reproducing apparatus called a mini disk ( MD: trademark ) apparatus, which can use both a read-only type optical disk and a rewritable type magneto-optical disk, has been manufactured and sold.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

FIG. 2 shows an example of the structure of the magneto-optical recording / reproducing apparatus 8 shown in FIG. The magneto-optical recording / reproducing apparatus of FIG. 2 ( MD data
The drive 8 is a system originally developed for use as a personal audio device (portable type, stationary type, in-vehicle type), and has a diameter of 64 mm, which is a read (playback) -only type optical disc, and a read / write type MO. (Opto-magnetic) disk or partial ROM with read / write (ie rewrite) and read-only areas
In the case of a read-only type optical disc, data is recorded by a magnetic field modulation overwrite recording method for an MO disc or a partial ROM disc using a recording medium in which any of (hybrid) discs is housed in a cartridge, The reproduced signal is detected by utilizing the diffraction phenomenon of light in the pit row of the target track, and in the case of a read / write type magneto-optical disk, the difference in the polarization angle (Kerr rotation angle) of the reflected light from the target track is detected. In the case of a partial ROM disk, the reproduction signal is detected by utilizing the diffraction phenomenon of light in the pit row of the target track, and in the case of the partial ROM disk, the reproduction signal is detected, and for the read / write area, It also detects the playback signal by detecting the difference in the polarization angle (Kerr rotation angle) of the reflected light from the target track. It is.

Claims (3)

[Claims] 1. An information processing device capable of using both a read-only disc-shaped recording medium and a rewritable disc-shaped recording medium, wherein the read-only disc-shaped recording medium is loaded into the information processing device. Determine the type of recording medium,
Only when the loaded disk-shaped recording medium is read-only, a program for causing the information processing apparatus to perform processing according to the program recorded on the disk-shaped recording medium is recorded, and the information processing apparatus is disk-shaped recorded. When a medium is loaded, the information processing apparatus is caused to execute the program,
An illegal copy excluding method, wherein an error occurs when the loaded disk-shaped recording medium is a rewritable type. 2. The disc-shaped recording medium for reproduction and the rewritable disc-shaped recording medium are distinguished from each other based on the difference in the shape of the cartridge of the disc-shaped recording medium. How to eliminate illegal copies. 3. The read-only disc-shaped recording medium and the rewritable disc-shaped recording medium are distinguished based on the difference in the holes formed in the cartridge of the disc-shaped recording medium. Item 1. The method for excluding illegal copy according to item 1.