JP2002319245A - Data recording medium, method and device for data reproduction, and method and device for data output - Google Patents

Abstract

PROBLEM TO BE SOLVED: To add identification information for identifying individual media to package media, such as an existent disk. SOLUTION: A groove area 4 where solid identification information (individual ID) is previously recorded is provided further inside the periphery side than for a read-in area 3 on the inner peripheral side of a recording area 2 for main data on a disk-like recording medium 1. The solid identification information (individual ID) is used to identify individual disks.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a data recording medium,
The present invention relates to a data reproducing method and apparatus, and a data output method and apparatus, and particularly to a so-called compact disc (CD).
TECHNICAL FIELD The present invention relates to a data recording medium such as a DVD or a DVD which can be easily mass-produced, a data reproducing method and apparatus using the data recording medium, and a data outputting method and apparatus.

[0002]

2. Description of the Related Art A compact disk (CD) is widely known as a digital audio signal recorded optically on a disk-shaped medium. This CD is a recording medium capable of recording 600 MB or more with a diameter of 12 cm. The format of this CD is called the Red Book, and is based on this CD-R for computers and games.
OM, CD-R that can be written once, CD-RW that can be rewritten, and the like are spreading.

[0003] A so-called DVD (digital versatile disk or digital video disk) is known as a medium for providing a high quality digital video signal.

[0004] Since these package media are intended for mass copying and mass distribution, they cannot be identified one by one, and in the case of the same software, basically the same media are all manufactured and supplied. become.

[0005]

By the way, in order to identify the above-mentioned mass-produced package media, conventionally, a serial number is written in a box (package) containing the package media, a questionnaire postcard, or the like. Or a sticker on which a serial number is written is affixed. However, in this method, it is impossible at present to identify the package medium alone. If the sticker is peeled off or the package or card with the serial number is lost, the serial number may not be compatible with the media, or the serial number may not be known at all. However, it is difficult to manage when the information is passed on to others.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to read individual identification information or an individual ID for distinguishing individual media such as a serial number from a data recording medium itself. It is an object of the present invention to provide a data recording medium capable of performing the above, and a data reproducing method and apparatus and a data output method and apparatus using the data recording medium.

[0007]

In order to solve the above-mentioned problems, a data recording medium according to the present invention is a data recording medium on which digital data is recorded, wherein the data recording medium is distinguished from another data recording medium. Individual identification information for performing the operation is previously recorded in a groove provided inside the lead-in area.

Further, the data recording medium according to the present invention comprises:
In order to solve the above-mentioned problem, in a data recording medium on which first digital data is recorded, the second digital data is recorded by a method different from the recording method of the first digital data. Is individually recorded in advance in a groove provided inside the lead-in area.

In the data reproducing method and apparatus according to the present invention, individual identification information for distinguishing a data recording medium from another data recording medium is first read.

[0010] The data reproducing method and apparatus according to the present invention may further include the step of providing individual identification information for identifying a data recording medium from another data recording medium in a groove provided inside a lead-in area of the data recording medium. Go to read,
A data reproducing method is controlled according to the read individual identification information.

In the data output method and apparatus according to the present invention, digital data is recorded, and individual identification information for identifying the individual is recorded in advance in a groove provided inside the lead-in area. When the data recording medium is reproduced and the reproduced data is output, the reproduced data is converted and output using the individual identification information.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a recording medium, a data reproducing method and apparatus, and a data output method and apparatus according to the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a schematic configuration of a data recording medium according to an embodiment of the present invention. In FIG. 1, a disk-shaped recording medium 1 is provided with a main data recording area 2 and a lead-in area 3 on the inner circumference side of the disk. A wobble area 4 in which individual identification information is recorded is provided.

The disc-shaped recording medium 1 is, for example, a so-called CD (compact disc) or a so-called DVD
(Digital versatile disc or digital video disc) is assumed, and a new recording format is assumed in which, in addition to recording data (first data) in an existing recording format, second data having a different recording method is added. are doing. The second data (additional data) is recorded by, for example, changing the shape and position of a recording pit formed according to an existing recording format (hereinafter, referred to as an old format). It does not affect the reproduction of the data in the old format, and the second data can also be read only when the data is reproduced by a reproduction device corresponding to the new recording format (hereinafter, referred to as a new format).
This guarantees upward compatibility. Specifically, while the first data is a so-called pit edge recording in which the recording pit is modulated by the edge or the length of the recording pit in the track longitudinal direction, the second data sets the recording pit in the tracking direction ( The second data is recorded by displacing the pits in the track width direction or changing the width of the recording pits (dimensions in the track width direction). However, the error is kept within the range of the error in the existing reproducing apparatus so that the reproduction of the old format data is not hindered.

The second data includes compressed music data, image data, text data, and the like. Specific contents thereof include, for example, posters, jackets, lyrics, liner notes, interview articles, New song information, concert lottery, online live viewing,
Karaoke, graffiti and the like.

The disc-shaped recording medium of such a new format has individual identification information or an individual ID (Unique IDentification :) for individually identifying each medium.
UID) is recorded in a recording form readable by the optical head. In the example of FIG. 1, the individual identification information or the individual ID is recorded in the wobble area 4 on the inner side of the lead-in area 3.

A read-only optical disk in the so-called CD or DVD family is mass-produced by a stamper. When the disk is near the final step of the manufacturing process, the individual identification information or the individual ID is assigned to each medium. Writing to a wobble area is mentioned. A specific example of a method of manufacturing a disc with this individual identification information or individual ID will be described later.

FIG. 2 shows the individual identification information or individual I
FIG. 3 is a diagram illustrating an example of a recording format of D. This figure 2
In the above, for example, the leading 32 bits are used as a synchronization (Sync) part, and in an area following the synchronization part, an information body for individually identifying a medium is subjected to data conversion, specifically, encrypted and recorded. Encryption area. The encrypted area includes, for example, a 16-bit record company (generally, a content production and / or supply company) ID, 32
It consists of a 128-bit record number (serial number), a 16-bit manufacturing device ID, a 48-bit serial number, and a 16-bit error correction code (ECC-A) or error detection code (EDC-A). ing. The manufacturing apparatus ID is identification information of the manufacturing apparatus that records the 48-bit serial number, and the manufacturing apparatus ID itself is used as a part of the information of the individual ID for identifying the medium. The 48-bit serial number is a main part of individual identification information or an individual ID for individually identifying a medium,
The record company (content production / supply company) can freely assign the number, and does not have to be a serial number.

In this embodiment, the 48-bit serial number includes time information indicating the date of manufacture of the disk-shaped recording medium 1, a position by GPS indicating the manufacturing location,
Information (URL) for connecting to a network such as the Internet or information for connecting to a mobile phone is assigned by a record company (content production / supply company). An additional area that allows additional information may be provided. An error correction code (ECC-B) of, for example, 64 bits is added to the encrypted area continuously, and the entire area including the synchronization section at the head is composed of 224 bits.

Here, for the 16-bit error correction code (ECC-A) or error detection code (EDC-A), for example, a generator polynomial is generated by a CRC (cyclic redundancy code) of g (x) = x16 + x12 + x5 + 1. Is done. This generating polynomial g (x) may be arbitrarily set by a record company (content production / supply company). As a result, random "bit strings" can be reliably eliminated. This code has a different purpose from the 64-bit error correction code (ECC-B), and is used not for the original purpose of error correction and error detection but for authentication of an individual ID. That is,
It can be determined whether such an individual ID exists.

The 64-bit error correction code (EC
For CB), for example, a generator polynomial of f (x) = x8 + x4 + x3 + x2 + 1 is used. When f (α) = 0, G (x) = (x + 1) (x + α) (x + α2). (x + α7) such as (24, 16, 9) Reed-Solomon code. This code has a correction capability capable of performing 4-byte detection correction or 8-byte erasure correction.

In summary, two or more error correction codes (ECC) or error detection codes (EDC) are used, one of which is used for original error correction or error detection,
The other is used for authentication of the individual identification information or the individual ID.

For the above-mentioned encryption area, for example, 128-bit data is transferred to an RSA (Rivest, Shamir a
nd Adleman) public key method, DES (Data Encry
(Ption Standard) method or the like to protect the individual ID from being stolen.

The format of the individual ID shown in FIG. 2 is merely an example, and the number of bits and arrangement of each area can be arbitrarily set, and the type of each area may be increased or decreased. Further, a part of the individual ID, for example, the manufacturing apparatus ID is written in a predetermined portion of the second data recorded in the recording area 2 of the main data in FIG. In addition, safety and reliability such as prevention of illegal copying can be improved.

Further, the disk-shaped recording medium 1 shown in FIG.
In the lead-in area 3, presence / absence determination information indicating whether or not the individual ID exists is recorded at a predetermined position, for example, a user area. This may be used as discrimination information of the presence or absence of the individual ID, or as discrimination information of whether the disc is a new format disc to which the second data is added. Conversely, the discrimination information as to whether or not the disc has the new format may be used as the discrimination information of the individual ID, or these may be recorded together as one discrimination information. Further, presence / absence determination information indicating whether or not a groove in which the individual identification information is recorded may be recorded in advance.

FIG. 3 is a block diagram showing a schematic configuration of a digital signal reproducing apparatus to which the embodiment of the present invention is applied. In FIG. 3, the disk-shaped recording medium 1 described with reference to FIG.
And the reproduced RF signal from the RF amplifier 12 is
(8-14 modulation) After being sent to the demodulation circuit 13 and subjected to EFM demodulation, it is sent to the lead-in reading circuit 14. Also,
Various servo signals (such as a tracking error signal and a focus error signal) from the RF amplifier 12 and a reproduced clock signal from the EFM demodulation circuit 13 are transmitted to the servo circuit 1.
5 and the servo circuit 15 outputs various servo signals. That is, the spindle servo signal from the servo circuit 15 is transmitted to the spindle motor 1 for driving the disk rotation.
6, the tracking servo signal and the focus servo signal are sent to a so-called biaxial device of the optical head 11, and the sled servo signal is sent to (a sled drive motor of) a sled mechanism 17 for moving the optical head 11 in the disk radial direction. Can be Commands and control data are transmitted and received between the servo circuit 15 and a CPU (processor unit) 18.

The lead-in read circuit 14 reads the lead-in area 3 of the disk-shaped recording medium 1 and sends it to the presence / absence determination circuit 21. The presence / absence determination circuit 21 detects the individual ID presence / absence determination information, The presence or absence is determined. When the presence / absence determination circuit 21 determines that there is no disc, the disc of the old format is reproduced and the output terminal 2
2 to output reproduced data. When the presence / absence determining circuit 21 determines that the individual ID is present, the control signal is sent to the lead-in reading circuit 14 to read the lead-in again, and the switch 23 is turned on. Is sent to the individual ID identification circuit 24. In this example, the individual ID
Alternatively, it is assumed that the individual identification information is also recorded in the lead-in area. However, as shown in FIG. 1, the individual ID or the individual identification information is stored in the groove area 4 on the inner peripheral side of the lead-in area 3. If is recorded,
The information in the groove area 4 is read and sent to the individual ID identification circuit 24. The individual ID identification circuit 24 determines whether the individual ID has been normally identified and determines whether the individual ID is normal (OK).
In this case, the disc of the new format including the second data is reproduced, and the reproduced data is output from the output terminal 25. If the identification is not normal (NG), a reproduction inhibition signal is output from the terminal 26.

FIG. 4 shows a summary of the above operations.
When a disc is inserted in the first step S41 of FIG. 4, the presence / absence determination information of the individual ID is determined in the next step S42, and if there is, the process proceeds to step S43, and if not, the process proceeds to step S47. Step S4
At 3, it is determined whether or not there is an individual ID. If YES, the process proceeds to step S44, and if NO, the process proceeds to step S4.
Proceed to 6 to stop (or prohibit) reproduction. The determination in step S43 may be only a determination as to whether or not the individual ID is actually written. However, if the individual ID has the format of the individual ID as shown in FIG. 2, the error correction code (ECC-A ) And error detection code (EDC-A)
It may be determined whether the individual ID has been normally recognized. In step S44, it is determined whether or not the second data is present. If YES, the flow proceeds to step S45 to reproduce the disk of the new format, and if NO, the flow proceeds to step S46 to stop (or inhibit) the reproduction. I do. In step S47, the individual I
It is determined whether or not D exists, and if YES, step S4
6 to stop the reproduction, and if NO, step S4
Proceed to 8. In step S48, it is determined whether or not the second data is present. If YES, the process proceeds to step S46 to stop the reproduction, and if NO, the process proceeds to step S49 to reproduce the old format disc. In addition,
Steps S47 and S48 are to eliminate the case where the individual ID or the second data exists even when the discrimination information of the individual ID is not recorded, such as when the disc of the new format is dead copied. However, one or both of these steps may be omitted.

Here, as one specific example of the operation of determining whether or not there is an individual ID in step S43 or the like,
The details of the operation of determining whether the individual ID has been normally recognized will be described with reference to FIG. 5 for an example of the format of the individual ID (individual identification information) shown in FIG.

In step S161 of FIG. 5, when the individual ID (individual identification information) in the format of FIG. 2 is received (or input), in the next step S162,
The error correction using the error correction code ECC-B is performed, and it is determined in step S163 whether the error correction has been completed normally. When it is determined that YES (error correction has been performed normally), the process proceeds to step S164, and when NO, the process proceeds to step S170 to perform a retry. In step S164, the 128-bit encrypted data in the encryption area of FIG. 2 is decrypted, and the process proceeds to step S165.
An error check is performed using the 16-bit error correction code (ECC-A) or error detection code (EDC-A).
In the next step S166, it is determined whether or not there is no error.
That is, the individual ID is authenticated, and if NO (there is an error), the process proceeds to a step S171 to execute a process (a reproduction prohibition process or the like) for an error (an unauthorized disk).
If YES (no error) is determined in step S166, that is, if the authentication of the individual ID is normally performed, the process proceeds to step S167 to perform authentication or confirmation of the serial number or the like in FIG. In step S168,
It is determined whether or not the authentication in the step S167 has been normally performed. If the determination is NO, the process in the case where the authentication is not possible is performed in the step S172. If the determination is YES, the process proceeds to the next step. This is because if the series of operations in FIG. 5 corresponds to, for example, the operation in step S43 in FIG. 4, step S167
If the answer is YES, the process proceeds to the next step S44 in FIG.

In the above description, an example is described in which presence / absence determination information indicating whether or not an individual ID exists is recorded. However, such presence / absence determination information may be omitted.
For example, when the recording position of the individual ID is predetermined as in the wobble area 4, the individual ID may be directly read. FIG. 6 shows a main part of such an example.

That is, FIG. 6 shows that the reproduced RF signal is
D readout circuit 27, and the individual ID is read out by the individual ID readout circuit 27 (individual ID
If there is no individual ID, the old format disc is played back by the old format playback system 29. It is. FIG. 6 is a diagram for explaining the concept.
For example, it is not necessary to separately provide the new format reproduction system 28 and the old format reproduction system 29.

In addition, information for discriminating whether or not the disc is the new format is recorded. According to the discrimination information for the disc type (new or old format), the individual I
The presence or absence of D may be determined. Furthermore, even if the discrimination information is not recorded, the recording pit is changed by a predetermined recording method different from the recording method of the old format, for example, by changing the shape and position of the recording pit in the track width direction,
The discrimination may be made by discriminating that the second data is recorded, and by discriminating between the new and old formats of the disc, thereby determining the presence or absence of the individual ID.

Next, FIG. 7 is a diagram for explaining a procedure for manufacturing a disc to which the above-mentioned individual identification information or individual ID is added.

In FIG. 7, a resist coating step 51 is performed.
Then, a photoresist is applied to a glass master disk (glass substrate), and in a cutting step 52, laser cutting is performed using a cutting apparatus as shown in FIG. Here, the wobble area 4 is formed. The laser-cut master is developed and fixed in a developing / fixing step 53, and then the surface is subjected to electrolytic plating in a metal master forming step 54 to form a metal master. next,
A transparent resin substrate such as polycarbonate (PC) or acrylic is formed through a stamper step 55 and a substrate forming step 56, and a reflective film is formed on the transparent resin substrate by sputtering in a subsequent reflective film forming step 57. Will be
As a target for this sputtering, a material for forming a special reflective film that can be recorded is used,
For example, a recording material containing Ag as a main component or a recording material containing Al as a main component, and is a conventional so-called CD or DVD.
A material that has a reflectivity similar to that of a reflective film or a reflectivity that can be read by a conventional optical head, and that can form a special reflective film that changes its reflectivity by irradiating a laser with a power larger than the reproducing laser power. Used. In the next protective film applying step 58, a protective film is applied and formed by spin coating, and in the next individual ID recording step, the wobble area 4 is formed.
The above-mentioned individual ID is recorded by irradiating a laser beam to the laser beam and modulating the reflectance.

FIG. 8 is a view for explaining a schematic configuration of an example of a cutting apparatus used in the cutting step 52 of FIG.

In FIG. 8, the laser light source 61 includes:
A He-Ne gas laser, an Ar gas laser, or the like is used, and the laser light from the laser light source 61 is sent to an optical modulator 62 where it is modulated, and a mirror 66 of a feed mechanism for moving the laser light in the disk radial direction. And irradiates the disk (original master coated with resist) 67. The optical modulator 62 has an EOM whose refractive index changes according to an applied voltage.
It has an (electro-optic modulator) 62a and an EOD (electro-optic polarizer) 62b whose polarization changes according to the applied voltage. A type of AO that generates ultrasonic waves (compression waves) in a medium by a piezoelectric element instead of these EOMs and EODs
M (acousto-optic modulator) or AOD (acousto-optic polarizer) may be used. In the case of a so-called CD, the signals from the music source 63 and the subcode signal generator 64 are sent to the CD data signal generator 65 and sent to the EOM 62a of the generated CD data signal light modulator 62, The additional data (the second data) 68 is sent to the new CD data signal generator 69, and the generated new CD data signal is sent to EODb. The EOM 62a is used to form recording pits for existing CD data,
Are used to record the second data by displacing the recording pits in the track width direction.

Next, a description will be given, with reference to FIG. 9, of how to use the disc of the new format to which the second data with the individual ID as described above is added. In FIG. 9, the user who has purchased the disc with the individual ID (step S31) performs a data reproduction step S3.
In step S33 through step 2, the UID is read, and the URL of a record provider, movie company, artist, or the like that is a provider or supplier of the content, or a creator or a copyright holder, is read. Then, in step S34, for example, via a communication network such as the Internet,
The homepage is accessed by the read URL, and the UID is authenticated to provide various services.

That is, the disc of the new format is linked to a homepage of a record company, a movie company, an artist, or the like, and a homepage administrator or a management program checks the validity of the individual ID of the disc of the new format. Authenticate the number of accesses, etc.
Provide various services. These services include:
Free viewing of the artist's net live program, distribution of discount tickets for concerts, sending graffiti, and the like.
Also, various lotteries can be performed using the individual ID. This may be carried out at a disk dealer, an event site, or the like, other than via a network.

FIG. 10 shows that the disk 1 of the new format is read by the disk drive 37 for the new format of the home personal computer 36 and communicates with the server 39 as a service provider via the Internet 38. The schematic structure of the system in the case is shown.

FIG. 11 is a flow chart for explaining the operation in the case of performing data communication relating to the above-mentioned new format disk using the system of FIG.
In FIG. 11, square blocks with rounded corners indicate processing on the user side, and square blocks with right angles indicate processing on the server side (the record company, movie company, artist, etc.).

In FIG. 11, the user inserts the disc of the new format in step S101, reads out the URL, which is the network address of the server homepage, from the individual ID in step S102, and accesses the homepage in step S103. I do. The server makes a transmission request for the individual ID in step S104, authenticates the individual ID in step S105, and determines whether or not the authentication was successful (OK). The authentication of the individual ID is performed, for example, according to the procedure of FIG. 5 described above. If the authentication of the individual ID is OK, in the next step S106, the server requests the user to transmit the data in the disk, and in the next step S107, determines whether the disk content authentication is OK. These steps S10
6. Even if only the information of the individual ID and the URL is obtained from another by S107, the authentication is not normally performed unless the disc itself of the new format is owned. Therefore, whether the disc is actually owned is determined. It will be possible to determine whether or not. The data in the disk requested to be transmitted in step S106 may be, for example, authentication data pre-recorded at a predetermined position of the second data in the disk, or recorded at a position in the disk arbitrarily designated by the server. Data etc. can be used.

In steps S105 and S107, N
When it is determined to be O (authentication was not performed normally), for example, as shown in step S112, a notice such as "service is not available with this disc" is displayed on the user's display.

When YES (normally authenticated) is determined in step S107, the process proceeds to step S108,
The server sends the service download menu to the user and causes the display to be displayed on the user's display. The items on this download menu include, for example, posters, jackets, lyrics, liner notes, interview articles, new song guidance, concert lottery, online live viewing,
Karaoke, graffiti and the like. The user selects a menu in step S109, and proceeds to the next step S1.
In step 10, the server performs re-checking or lottery of the individual ID. In the case of OK, the server performs the download service in step S111. In the case of inconvenience (NG), the server causes step S112 to be displayed as necessary. S10
The state shifts to a state of waiting for menu selection of No. 9.

FIG. 12 shows the procedure shown in FIG. 11 more specifically and in more detail. In particular, the additional data (the second data) of the new format disk
When the encrypted content is included in the URL, or when the encrypted content is also included in the main data in the case of a CD-ROM or the like, the encryption is performed from the server side of the URL homepage. Shows a specific example in the case of obtaining the key of (1).

In FIG. 12, the user inserts the disk of the new format in the first step S121, and reads out the URL in the next step S122.
In the example of FIG. 12, it is assumed that there are a plurality of accessible homepages. In step S123, URLs corresponding to the plurality of homepages A, B, C,.
To choose. Here, for example, when homepage A is selected, access to homepage A is attempted in step S124, and step S14 on the server side is attempted.
The homepage A is accessed at 1. On the server side,
In the next step S142, a user name is requested, and in response to this, the user inputs the user name in step S125. This is sent to the server side, the user name is stored (registered) in step S143, and a transmission request for the individual ID is issued in the next step S144. The user reads and transmits the individual ID in step S126. On the server side, in step S145, the individual ID from the user side
Is authenticated and stored, and it is determined in step S146 whether or not the authentication is OK. In the case of NO, the server prohibits access to the user and displays an error as shown in step S132, and the server records the communication history TR (transaction) in step S154, and terminates the communication. In step S146, YES (authentication of individual ID
If determined as K), the server proceeds to step S147.
Requests the transmission of a predetermined portion of the additional data, and the user reads out and transmits the predetermined portion of the additional data in step S127. In step S148, the server authenticates (the predetermined part of) the additional data, and determines in step S149 whether the authentication is OK.

These steps S147-S149 are
This corresponds to the in-disk data transmission request and authentication in steps S106 and S107 in FIG. If NO is determined in the step S149, the server prohibits the access to the user and displays an error as shown in a step S133, and the server executes the step S133.
At 155, the communication history TR (transaction) is recorded,
End the communication. YES (authentication OK) in step S149
When the server is determined to be, the server proceeds to step S150, and issues a billing request for decryption, for example. At this time, the user approves the charge in step S128 (OK).
Select whether or not. In this step S128, the user
If O is selected, the server notifies the server of the homepage A of that fact, and the server records the TR (communication history) in step S156 to terminate the communication, and the user ends the communication in step S123. Returns to the state of selecting a URL for accessing another home page.
If the user selects YES (account OK) in step S128, the server performs an accounting process in step S151, generates a decryption key KID in step S152 and transmits it to the user, and then, in step S153, TR (Communication history) is recorded, and the communication is terminated. Here, the decryption key KID is obtained by encoding or encrypting the key K for decrypting the encrypted content with the individual ID (the serial number or the like), and obtains the decryption key KID. It is preferable that even if the ID is stolen, it cannot be used without the individual ID. Next, in step S129, the user decodes or decrypts the decryption key KID with the individual ID to obtain the content decryption key K. In the next step S130, the key K
Is used to decode or decrypt the encrypted content, and the content is reproduced in step S131.

Next, FIG. 13 shows the individual ID as described above.
FIG. 3 is a diagram illustrating a configuration example of a playback apparatus for describing a copy control or copy management method using the RP. This FIG.
In FIG. 6, the same parts as those in the configuration of FIG.

Since the conventional package medium does not have the above-mentioned individual ID, even if a copy of the package medium is made, for example, it is not known at all which one was made by the parent. This made it difficult to crack down on piracy and piracy. Therefore, in a specific example of the present embodiment, a watermark (WM) based on an individual ID is embedded in the content itself by, for example, spectrum spreading or the like (so-called data hiding) so as not to hinder viewing, so that only digital output is performed. Instead, it is embedded in the analog signal and is inherited even if copying is repeated, so that the source and history of the source can be tracked.

That is, in FIG. 13, the content data obtained from the EFM demodulation circuit 13 via the CIRC (cross-interleaved Reed-Solomon code) error correction circuit 19 is sent to the adder 20 and is obtained from the RF amplifier 12. The obtained individual ID is sent to the individual ID identification circuit 1
The data is identified and extracted at 61, sent to the WM (watermark) generation circuit 162, sent to the adder 20 by the above-described method such as spread spectrum, and superimposed and added to the content data itself. The digital content data from the adder 20 is taken out from the output terminal 163 as a digital output, or converted into an analog signal by a D / A (digital / analog) converter 164 and taken out from the output terminal 165 as an analog output.

The digital content data from the adder 20 shown in FIG.
The individual ID from the D identification circuit 161 (at least part of the information) may be used as an encryption key, encrypted by the encryption circuit 166, and extracted from the output terminal 167. As a result, the encrypted data output becomes an encrypted output unique to the individual ID, and becomes an extremely secure encrypted output.

In the present embodiment, the groove area 4
May be recorded in the recording area 2 of the main data. A part of the individual identification information recorded in the groove area 4;
By collating the same information recorded in the website, countermeasures against piracy and piracy can be taken.

The groove area 4 is not a pit-by-pit wobble, but is, for example, 22.05 kHz.
The pit can be wobbled in the form of a sine wave, and a key for encryption can be inserted.

By the way, in the above-described embodiment, an example has been given in which the individual identification information includes the URL and information for connecting to a mobile phone, but the second data includes the URL and the mobile phone. Of course, it may include information for connecting to the telephone.

In addition to connecting to a network or a mobile phone according to the URL and the mobile phone connection information,
The depth of the connection may be controlled by the individual ID, or a data service system may be constructed such that the level of service received by the ID is controlled. Also, as described above, the individual ID
The lottery number may be used as the lottery number. further,
When a disc is supplied to the market, the above-mentioned individual ID can be distinguished between rental and cell, and a part of the cell service can not be received with the rental individual ID. In addition, the first layer records the first data of the old format, and the second layer has a low reflectance, for example, so that it cannot be read by an existing disk reproducing apparatus. 2 may be recorded.

The present invention is not limited to the above-described embodiment. For example, in the above-described embodiment, an optical disk has been mainly described, but the present invention can be applied to a recording medium such as a card or a tape. Also, the data modulation method is not limited to EFM (8-14 conversion), and various modulation methods such as EFM plus can be used. In addition, it goes without saying that various changes can be made without departing from the spirit of the present invention.

[0057]

According to the data recording medium of the present invention, individual identification information (individual ID) for distinguishing the data recording medium from other data recording media is recorded in advance in the groove area inside the lead-in area. Therefore, a recording medium with an individual ID and a medium without an individual ID can be handled with compatibility.

Further, according to the data recording medium of the present invention, the second digital data is recorded by a method different from the recording method of the first digital data, and the data recording medium is distinguished from other data recording media. Is stored in advance in the groove area inside the lead-in area, the second data can be used for providing various services, and the added value can be increased. That is, various services can be provided through individual IDs by linking to the homepages of data providers such as record companies, movie companies, and artists using URLs.

Further, by combining the individual ID and the second data, it is possible to prevent illegal copying of only the individual ID. In addition, WM (watermark) and encryption can be applied to the output of the reproduction-only software using the individual ID.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a disk-shaped recording medium to which an embodiment of the present invention is applied.

FIG. 2 is a diagram for explaining an example of a recording format of an individual ID, which is information for individual identification.

FIG. 3 is a block diagram illustrating a schematic configuration of a data reproducing apparatus to which an embodiment of the present invention is applied;

FIG. 4 is a flowchart for explaining a procedure for reproducing a disc of a new format.

FIG. 5 is a flowchart illustrating a procedure for authenticating an individual ID.

FIG. 6 is a diagram for describing an example in which an individual ID is directly read to switch a reproduction operation.

FIG. 7 is a diagram for explaining an example of a procedure for manufacturing a disc of a new format.

FIG. 8 is a diagram for explaining a schematic configuration of a cutting device for manufacturing a disc.

FIG. 9 is a diagram for explaining an example of a method of using a disc of a new format.

FIG. 10 is a diagram illustrating an example of a system for using a disk of a new format.

FIG. 11 is a diagram for explaining a procedure for performing data communication using a disk of a new format.

FIG. 12 is a diagram for explaining another specific example of a procedure for performing data communication using a disk of a new format.

FIG. 13 is a block diagram showing a schematic configuration of a data reproducing apparatus to which another embodiment of the present invention is applied.

[Explanation of symbols]

1 disk-shaped recording medium, 3 lead-in area, 4
Individual identification information recording area, 11 Optical head, 12
RF amplifier, 13 EFM demodulation circuit, 14 lead-in readout circuit, 15 servo circuit, 21 individual ID presence / absence determination circuit, 24 individual ID identification circuit

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Claims (47)

[Claims] 1. A data recording medium on which digital data is recorded, wherein individual identification information for identifying the data recording medium from another data recording medium is recorded in advance in a groove provided inside a lead-in area. A data recording medium characterized by the above-mentioned. 2. The data recording medium according to claim 1, wherein presence / absence determination information indicating whether or not the individual identification information exists is recorded in advance. 3. The data recording medium according to claim 1, wherein presence / absence determination information indicating whether or not there is a groove in which the individual identification information is recorded is recorded in advance. 4. The data recording medium according to claim 1, wherein information similar to a part of said individual identification information recorded in said groove is recorded in a data recording area. 5. The data recording medium according to claim 4, wherein a part of the individual identification information recorded in the groove and similar information recorded in the data recording medium area are collated. . 6. The data recording medium according to claim 1, wherein the individual identification information includes time information and / or location information related to manufacturing. 7. The data recording medium according to claim 1, wherein the individual identification information includes information for connecting to a network. 8. The data recording medium according to claim 1, wherein the individual identification information includes information for connecting to a mobile phone. 9. The data recording medium according to claim 1, wherein additional information is recorded in a predetermined area on the groove where the individual identification information is recorded. 10. The data recording medium according to claim 1, wherein said individual identification information includes serial number information. 11. The data recording medium according to claim 1, wherein the individual identification information includes data provider information. 12. The data recording medium according to claim 1, wherein said individual identification information includes information of a data recording device. 13. The data recording medium according to claim 1, wherein the individual identification information has been converted. 14. The data recording medium according to claim 13, wherein said data conversion is encryption. 15. The data recording medium according to claim 1, wherein said individual identification information is error correction encoded. 16. The personal identification information, wherein a plurality of code sequences are subjected to error correction encoding or error detection encoding, and at least one sequence code is used to authenticate the individual identification information. The data recording medium according to claim 1. 17. The digital data is EFM or EFM.
2. The data recording medium according to claim 1, wherein the data is recorded according to an FM plus modulation method. 18. The data recording medium according to claim 1, wherein said data recording medium is read-only. 19. The data recording medium according to claim 1, wherein pits are wobbled in a sine wave shape of a predetermined frequency in said groove for recording. 20. A data recording medium on which the first digital data is recorded, wherein the second digital data is recorded by a method different from the recording method of the first digital data, A data recording medium, wherein individual identification information for identifying the recording medium is recorded in advance in a groove provided inside the lead-in area. 21. The data recording medium according to claim 20, wherein presence / absence determination information indicating whether or not said second digital data and / or said individual identification information exists is recorded in advance. 22. The data recording medium according to claim 20, wherein presence / absence determination information indicating whether or not there is a groove in which the individual identification information is recorded is recorded in advance. 23. An apparatus according to claim 23, wherein information similar to a part of said individual identification information recorded in said groove is recorded in a recording area of said first digital data and / or second digital data. The data recording medium according to claim 1, wherein 24. A part of the individual identification information recorded in the groove and similar information recorded in a recording medium area of the first digital data and / or the second digital data are collated. 3. The method according to claim 2, wherein
3. The data recording medium according to 3. 25. The data recording medium according to claim 20, wherein the individual identification information includes time information and / or location information on manufacturing. 26. The apparatus according to claim 20, wherein the individual identification information includes information for connecting to a network.
The data recording medium described in the above. 27. The data recording medium according to claim 20, wherein the individual identification information includes information for connecting to a mobile phone. 28. The data recording medium according to claim 20, wherein additional information is recorded in a predetermined area on the groove where the individual identification information is recorded. 29. The data recording medium according to claim 20, wherein said individual identification information includes serial number information. 30. The data recording medium according to claim 20, wherein said individual identification information includes data provider information. 31. The data recording medium according to claim 20, wherein the individual identification information includes information of a data recording device. 32. The data recording medium according to claim 20, wherein said individual identification information is data converted. 33. A data recording medium according to claim 32, wherein said data conversion is encryption. 34. The data recording medium according to claim 20, wherein said individual identification information is error correction encoded. 35. The personal identification information, wherein a plurality of code sequences are subjected to error correction coding or error detection coding, and at least one sequence code is used to authenticate the individual identification information. The data recording medium according to claim 20. 36. The digital data is EFM or EFM.
21. The data recording medium according to claim 20, wherein the data recording medium is recorded according to an FM plus modulation method. 37. The data recording medium according to claim 20, wherein said data recording medium is read-only. 38. The data recording medium according to claim 20, wherein pits are wobbled and recorded in the groove in a sine wave shape of a predetermined frequency. 39. A data reproducing method for reproducing a data recording medium on which digital data is recorded, wherein individual identification information for distinguishing the data recording medium from other data recording media is provided in a lead-in area of the data recording medium. A data reproduction method, wherein the data reproduction method is controlled to read data into the groove provided inside the data storage device and according to the read individual identification information. 40. A data reproducing method for reproducing a data recording medium on which first digital data is recorded, wherein there is second digital data recorded by a method different from the first digital data recording method. And when it is determined that the second data is recorded, it is distinguished from another data recording medium recorded in advance in a groove provided inside the lead-in of the data recording medium. A data reproducing method for reading individual identification information for reading. 41. The data reproducing method according to claim 40, wherein when the individual identification information recorded in advance in the groove can be read, the data reproducing method is controlled according to the read individual identification information. 42. A data reproducing apparatus for reproducing a data recording medium on which digital data is recorded, wherein individual identification information for distinguishing the data recording medium from another data recording medium is provided in a lead-in area of the data recording medium. A data reproducing apparatus, comprising: reading means for reading data into a groove provided inside the device; and control means for controlling a data reproducing method according to the individual identification information read by the reading means. 43. A data reproducing apparatus for reproducing a data recording medium on which first digital data is recorded, wherein there is second digital data recorded by a method different from the first digital data recording method. Determining means for determining whether or not the second data has been recorded; and another data recording medium previously recorded in a groove provided inside a lead-in of the data recording medium when it is determined that the second data has been recorded. Readout means for reading out the individual identification information for identifying the information, and when the readout means can read out the individual identification information recorded in advance in the groove, controlling a data reproducing method according to the readout individual identification information. A data reproducing apparatus, comprising: 44. A data recording medium in which digital data is recorded and individual identification information for identifying the individual is recorded in advance in a groove provided inside the lead-in area, and the reproduced data is reproduced. A data output method for outputting data, wherein the reproduced data is subjected to data conversion using the individual identification information and output. 45. The data output method according to claim 44, wherein in the data conversion, information generated using the individual identification information is superimposed on the reproduced data. 46. A data reproducing means for reproducing a data recording medium in which digital data is recorded and individual identification information for identifying the individual is previously recorded in a groove provided inside the lead-in area. A data conversion unit for converting the reproduced data into data using the individual identification information. 47. The data output device according to claim 46, wherein said data conversion means superimposes information generated using said individual identification information on said reproduced data.