CN100541614C - Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disk - Google Patents

Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disk Download PDF

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CN100541614C
CN100541614C CN 200610100727 CN200610100727A CN100541614C CN 100541614 C CN100541614 C CN 100541614C CN 200610100727 CN200610100727 CN 200610100727 CN 200610100727 A CN200610100727 A CN 200610100727A CN 100541614 C CN100541614 C CN 100541614C
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data
signal
optical disc
circuit
optical
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CN 200610100727
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CN1881424A (en
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小林诚司
藤木敏宏
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索尼株式会社
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Priority to JP1998-332222 priority
Priority to JP1998-371795 priority
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Priority to CN200610074118.4 priority
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Abstract

一种光盘制造装置,包括根据多个密钥信息对输入的数字数据加密的加密单元;光盘基片制造单元,在其制造的基片上,通过物理结构变化记录经加密的数字数据和密钥信息;在基片上形成反射膜的反射膜形成单元;以及密钥信息记录单元,用于在形成反射膜的光盘基片上记录密钥信息。 An optical disc manufacturing apparatus, comprising a plurality of key information in accordance with input digital data encrypted encryption unit; means for producing an optical disk substrate, a substrate in the manufacture thereof, recording encrypted digital data and the key information by physical changes in the structure ; reflection film forming unit forming a reflective film on the substrate; and a key information recording unit for recording the key information on the optical disc substrate is formed a reflective film. 局部改变光盘的反射系数,给予每个凹坑边缘的位置信息一抖动。 Locally changing the reflectance of the optical disc, the position information given to each edge of a pit jitter. 根据抖动附加记录所需的数据。 The data required for additional recording jitter. 使凹坑从光盘的轨迹中心向内/外区偏移,以便将子数据记录为密钥信息。 Inwardly from the track so that the pit center of the disc / outer zone offset, so that the sub data is recorded as key information.

Description

造光盘、记录或再现光盘数据的装置和方法 Making an optical disk, a recording apparatus and method for an optical disc or reproducing data

本申请是申请号为200610074118.4、申请日为1999年10月8日、发明名 This application is the application number 200610074118.4, filed on October 8, 1999, the name of invention

称为"光盘和用于制造光盘、记录或再现光盘数据的装置和方法"的发明专利申请的分案申请。 Patent Application invention called "an optical disc and for producing an optical disc, an optical disc recording apparatus and method or data reproducing" of divisional applications.

技术领域 FIELD

本发明涉及一种用于制造光盘的装置和方法、 一种用于将数据记录在光盘上的装置和方法、 一种用于从光盘再现数据的装置和方法,以及光盘。 The present invention relates to an apparatus and a method for manufacturing an optical disc, an apparatus and method for recording data on an optical disc, the data reproducing apparatus for and method, and an optical disk from the optical disk. 例如, 本发明可以用于CD光盘(COMPACTDISK)、 CD光盘播放机、用于记录音频数据的光盘以及可用于光盘的记录装置和再现装置。 For example, the present invention may be used in CD-ROM (COMPACTDISK), CD disk player, an optical disc for recording audio data and a means for recording and reproducing optical disk apparatus.

背景技术 Background technique

本发明局部地改变光盘的反射率,由此给予每一个凹坑边缘的定位信息一个抖动,从而将所需的数据附加记录在光盘上。 The present invention locally changing the reflectivity of the optical disc, thereby giving each dimple edge location information of a dithering, so that the desired data is additionally recorded on the optical disc. 结果,可以将各种数据记录在光盘上,以便通过再现数据串的光学拾音器进行再现,并且不会被非法复制, 对以凹坑串形式记录的数据串再现没有任何不利影响。 As a result, various data can be recorded on the optical disc, an optical pickup for reproducing the reproduction data string, and will not be illegally copied, without any adverse effect on the pit string in the data string recorded in the form of reproduction.

此外,本发明向光盘的内/外区域改变位(bit)等,从而将这种子数据记录成为密钥信息等,由此可以将各种数据记录在光盘上,以便通过再现数据串的光学拾音器进行再现,并且不会被非法复制,对以凹坑串形式记录的数据串再现没有任何不利影响。 Further, the optical disk of the present invention / an outer area change bit (bit) and the like, so that these records become the seed data key information, whereby various data can be recorded on the optical disc, the optical pickup strings to reproduce data by reproduction, and it will not be illegally copied, without any adverse effect on the pit string in the data string recorded in the form of reproduction.

在传统CD光盘(CD)的情况下,要记录的数据串已经经过处理,然后须经EFM调制(八到十四调制),由此记录音频数据之类的数据。 In the case of the conventional CD disc (CD), a data string to be recorded has been treated, and subject to EFM modulation (eight to fourteen modulation), thereby recording data such as audio data.

另一方面,在光盘内区的引导区中形成一管理数据记录区,记录在这个记录区上的TOC(TABLEOFCONTENTS,内容表)用于有选择地再现所需的音乐表演数据等。 On the other hand, a management data recording area is formed in a region within the region of the guide disc, the recording TOC (TABLEOFCONTENTS, table of contents) recorded in this region for selectively reproducing a desired music data and the like. 如上所述的具有各种记录数据的CD光盘在引导区的内区上提供有用于 CD-ROM recorded with various data as described above is provided for the inner region of the lead-in area

IFPI(照相工业联盟)代码的记录区,其中,记录了由目标用户使用的诸如音频信号和TOC(内容表)等信号。 The IFPI recording area (photographic industry alliance) code, which is recorded such as an audio signal used by the target user and TOC (Table of Contents) and other signals. 在这区中还有诸如工厂名称、光盘编号等标题代码,根据这些,能目测检查CD光盘的历史。 In this area there are plants such as name, CD title number and other codes, these can be visually inspected history CD disc.

同时,将诸如制造者名字、工厂名称、盘片编号等标题数据编在每一CD 光盘上,由此可以目测检查CD光盘的历史,并用这种标题数据来鉴别从原始光盘制造的非法复制光盘。 At the same time, such as manufacturer name, the name of the factory, the disc number and other header data compiled on each CD-ROM, which can be visually inspected history of CD disc, and use this data to identify the title illegally copying discs made from the original CD-ROM . 然而,由于记录了以便目测检查的标题数据,所以标题数据产生了一个问题,即CD光盘播放机的光学拾音器不能容易地再现数据。 However, since the recording of the header data for visual inspection, the header data causes a problem that the optical pickup of the CD player can not be easily reproduced data. 为了解决这个问题,需要一种用于再现标题数据的专用再现装置,该装置可从非法复制的光盘上鉴别标题数据。 To solve this problem, a need for a dedicated reproducing apparatus for reproducing the header data, the apparatus can identify the header data from the illegally duplicated optical disc.

例如,如果能够通过从目标光盘上剥落保护膜和铝反射膜而产生的压模来复制,则要记录的标题数据是用普通的凹坑形式记录的,并且能目测检査。 For example, if the stamper can be produced by peeling the protective film and aluminum reflection film from the optical disk to copy the target, it will have to record title data is recorded in the form of an ordinary pit, and can be visually inspected. 而这正是不能保护CD光盘不被非法复制的原因。 And this is the reason the CD does not protect illegal copying.

为了解决上述问题,例如,日本专利公开号9-67843揭示了一种方法,该方法改变记录激光的输出,以改变记录在光盘上的凹坑宽度,从而将固有代码记录在光盘上。 To solve the above problems, for example, Japanese Patent Publication No. 9-67843 discloses a method of changing the output of the recording laser, in order to change the width of the recording pits on the optical disk, thereby recording a unique code on the optical disc.

例如,第一个例子是一个众所周知的方法,该方法根据上述专利申请所述的方法,对光盘上的记录信号进行加密,并将解密用的密钥信息记录为凹坑宽度的变化。 For example, the first example is a well known method of the above-described method according to the patent application, the signal recorded on the optical disk is encrypted, and recorded as the change in the pit width of the key information for decryption. 包括一再现装置,由此可以检测上述被记录的密钥信息,并按照检测到的密钥信息对密码解密。 Comprising a reproducing means, thereby detecting the key information is recorded, and according to the detected decryption key information. 由于在盗版光盘上没有记录密钥信息,因而不能对密码解密,光盘的内容不能正常再现。 Since the key information is not recorded on the pirated optical disk, and therefore can not decrypt password, the contents of the disc can not be reproduced properly. 因此,如果再现装置如上述构造,则盗版光盘变成无用,从而可以基本上阻止盗版复制品。 Accordingly, if the reproducing apparatus configured as described above, the pirated optical disk becomes useless, thereby substantially preventing pirated copies.

现在,有两种众所周知的制造盗版光盘的方法; 一种方法是,将来自光盘的再现信号照原样地提供给记录单元;另一种方法是,照原样地传送光盘的物 Now, the method for producing the two well-known pirated optical disc; a method, according to the reproduced signal from the optical disk as it is supplied to the recording unit; Another method is, according to the optical disc was transferred as it

理结构。 Physical structure. 如果用按照上述第一例制造的光盘来制造将再现信号照原样提供给记录单元的盗版光盘,那么虽然可以将以"凹坑/无凹坑"的变化形式记录的信息记录在盗版光盘上,但在盗版光盘上并没有记录以凹坑宽度变化形式记录的密钥信息。 If the optical disc according to a first embodiment manufactured by pirated discs manufactured by the reproduced signal as it is supplied to the recording unit, although it will be information "pit / no pit" records the variations recorded on pirated discs, However, the key information is not recorded and the width of variation in the pit recorded on the pirated optical discs. 因此,通过采用上述第一个例子的方法,有可能阻止制造将再瑰信号照原样地提供给记录单元的盗版光盘。 Thus, by the method using the above-described first example, it is possible to prevent the manufacture Jiangzai Rose signal as it is supplied to the recording unit of pirated optical discs. 然而,如果将按照上述第一例制造的光 However, if made in accordance with the first embodiment light

6盘用来制造照原样传送光盘之物理结构的盗版光盘,则以凹坑宽度变化形式记录的密钥信息也记录到盗版光盘上。 6 as it is used to make the physical structure of the optical disk transfer pirated optical disk, the pit width variation places the key information recorded on the pirated optical disk is also recorded. 因此,不能阻止制造基于物理传送的盗版光盘是第一例方法的缺点。 Thus, not prevent the manufacture of pirated optical discs based on the physical transfer of a first embodiment of the method is the disadvantage.

现在,第二个例子是解决这个问题的众所周知的方法。 Now, the second example is a well-known solution to this problem. 在第二个例子中, 不是以物理结构的形式记录密钥信息,而是以射率变化的形式记录该信息。 In the second example, the key information is not recorded in a form of a physical structure, but in order to record the information in the form of reflectance change. 详细地说,在诸如光盘引出区的区域中,形成一个槽,使强激光束照射到该区的反射膜上,从而改变反射特性,并且记录与一位串相同的信息。 In detail, in a region such as a lead-out area of ​​the optical disc, a groove is formed, so that the strong laser beam is irradiated to the region of the reflective film, thereby changing the reflection characteristic, and records the same information bit string.

如果以反射率变化的形式记录密钥信息,则密钥信息是以反射膜的反射特性变化的形式记录的。 If the key information is recorded in the form of a change in reflectivity, the reflection characteristic of the key information is a change in the reflection film in the form of records. 由于密钥信息不是以物理结构(坑)的形式记录的,所以在按照物理传送制造盗版光盘时,密钥信息将不复制在其上。 Since the key information is not in the form of a physical structure (pits) recorded, so in accordance with the physical production of pirated optical disk transfer, the key information will not be copied thereon. 因此,这方法补救了第一个例子的不足之处,有可能阻止釆用按物理传送方法制造盗版光盘。 Accordingly, this method to remedy the shortcomings of the first example, it is possible to prevent the manufacture of pirated optical discs according to preclude the use of physical transfer methods.

但是,第二个例子也有缺点,如果按将来自光盘的再现信号照原样地提供给记录单元的方法制造光盘,则记录在引出区上的密钥信息被照原样地复制。 However, the second example also has disadvantages, if the press according to the reproduced signal from the optical disk to provide a method for manufacturing an optical disc as a recording unit, the key information is recorded on the lead-out area is copied as it is.

如上所述,所建议的阻止盗版光盘的各种方法仅对这里所建议的制造盗版光盘的两种方法中的一种方法有效。 As described above, various methods to prevent pirated optical disc only suggested a method proposed here two methods for producing effective in pirated optical discs. 此外,如果按照上面未曾描述的方法制造盗版光盘,这些方法完全无效。 Further, if the pirated optical disc manufacturing method according to never described above, these methods are completely ineffective.

发明内容 SUMMARY

在这种情况下,本发明的目的是提供用于制造光盘的装置和方法,不能通过将再现信号直接提供给记录单元的方法和物理地传送光盘结构的方法用该 In this case, the object of the present invention is to provide an apparatus and a method for manufacturing an optical disc, a signal is directly supplied to the recording method of the unit and physical structure of the optical disc can not be transmitted by the reproduction

装置和方法制造盗版光盘,因而排除了传统盗版再现的不足之处;以及提供应 Apparatus and methods for making pirated optical discs, thus eliminating the shortcomings of conventional reproducing pirated; and should provide

用这种防盗版再现的光盘和提供用于对应用这种防盗版再现的光盘进行再现 CD-ROM and provide this anti-piracy optical disc playback for this application is reproduced reproduction antipiracy

的方法。 Methods.

此外,也有可能通过使用这数据而排除非法复制,如果可以记录各种数据而要用再现音频数据的光学拾音器进行再现,而且在作为凹坑串的音频数据的再现方面,难于非法复制而没有任何不利的影响。 In addition, it is also possible by using these data exclude illegal copying, and various data may be recorded if the reproducing optical pickup to use the audio data is reproduced, and the reproduction in terms of pit strings as audio data, illegal copying difficult without any negative effect.

因而本发明的另一个目的是提供一种光盘、 一种光盘记录单元、 一种光盘 Thus a further object of the present invention is to provide an optical disk, an optical disk recording unit, an optical disc

记录方法、 一种光盘再现装置以及一种再现方法,所述方法能记录各种禁止非法复制的数据,因而可以用再现以凹坑串形式记录的音频数据的光学拾音器进行再现,而且在作为以凹坑串的的格式记录的音频数据的再现方面,难于非法复制而没有任何不利的影响。 The recording method, an optical disk reproducing apparatus and a reproducing method that can record various illegal copying of data is prohibited and can thus be reproduced by the optical pickup to reproduce pit string recorded in the form of audio data, but also as to reproduce aspects of audio data recorded in the format of the pit strings, it is difficult to copy illegally without any adverse effects.

为了解决上述传统的问题,根据本发明的第一个方面,用于制造光盘(该光盘具有已记录的数字数据,可以通过激光束的照射而读出)的光盘制造装置包括:加密单元,用于根据多个密钥信息对输入数字数据加密;光盘基片制造机, 用于制造光盘基片,在所述基片上,以物理结构变化的形式记录经加密的数字数据和密钥信息;反射膜形成单元,用于在光盘的基片上形成反射膜;以及密钥信息记录单元,用于在有反射膜的光盘基片上记录密钥信息。 In order to solve the conventional optical disk manufacturing apparatus of the above problems, a first aspect of the present invention, for manufacturing an optical disc (optical disc having digital data recorded can be read out by irradiating a laser beam) comprises: an encryption unit for according to the data of a plurality of input digital encryption key information; disc substrate manufacturing machine for manufacturing the optical disc substrate, on the substrate, recording the encrypted digital data and the key information in the form of a physical change in the structure; a reflective film forming unit for forming a reflective film on the optical disc substrate; and a key information recording unit for recording the key information on the optical disc substrate with a reflective film.

根据本发明的第一个方面,加密单元根据多个密钥信息对输入数字数据加密;光盘基片制造机制造光盘基片,在所述基片上,以物理结构变化的形式记录经加密的数字数据和密钥信息;反射膜形成单元在光盘的基片上形成反射膜;以及密钥信息记录单元在有反射膜的光盘基片上记录密钥信息。 According to a first aspect of the present invention, a data encryption unit according to the plurality of input digital encryption key information; disc substrate producing machine manufacturing an optical disc substrate, on the substrate, in the form of a physical change in the structure of recording encrypted digital data and the key information; reflection film forming unit forming a reflective film on the optical disc substrate; and a key information recording unit records the key information on the optical disc substrate with a reflective film.

根据本发明的第一个方面,提供用于制造光盘(该光盘具有已记录的数字数据,可以通过激光束的照射而读出)的光盘制造装置包括:加密单元,用于根据多个密钥信息对输入数字数据加密;光盘基片制造机,用于制造光盘基片,在所述基片上,以物理结构变化的形式记录经加密的数字数据和密钥信息;反射膜形成单元,用于在光盘的基片上形成反射膜;以及密钥信息记录单元,用于 Optical disc manufacturing apparatus according to a first aspect of the present invention, there is provided for manufacturing an optical disc (optical disc having digital data recorded can be read out by irradiating a laser beam) comprises: an encryption unit for a plurality of keys encryption information input digital data; disc substrate manufacturing machine for manufacturing the optical disc substrate, on the substrate, recording the encrypted digital data and the key information in the form of a physical change in the structure; a reflection film forming unit for forming a reflective film on the optical disc substrate; and a key information recording means for

在有反射膜的光盘基片上记录密钥信息。 Key information recorded on the optical disc substrate with a reflective film.

本发明的第二个方面提供上述的光盘制造装置,其中,光盘基片制造单元包括:曝光单元,用于根据经加密的数字数据和密钥信息将激光束会聚在光盘上使原版光盘曝光;压模形成单元,用于通过在经曝光的原版光盘上应用化学处理而形成压模,从而改变在其上的物理结构;以及再现单元,用于传送在压模上的物理结构变化,从而产生多个光盘基片。 A second aspect of the present invention provides an optical disc manufacturing apparatus described above, wherein the optical disc substrate production unit comprises: an exposure unit for encrypted digital data and the key information so that the laser beam converged on the optical disc master disc exposure; stamper forming unit, for forming a stamper by applying a chemical treatment on the exposed master disc, to change the physical structure thereon; and a reproduction unit configured to transmit a change in the physical structure of the stamper, thereby generating a plurality of optical disc substrate.

本发明的第三个方面提供上述的光盘制造装置,其中,曝光单元包括:激光束强度调制单元,用于根据经加密的数字数据调制激光束的强度;以及激光束会聚位置变化单元,用于根据密钥信息改变激光束的会聚位置。 A third aspect of the present invention provides an optical disc manufacturing apparatus described above, wherein the exposure unit comprises: a laser beam intensity modulating means, according to the intensity of the laser beam is modulated digital data encrypted; and a laser beam condensing position change means for condensing position of the laser beam changes according to the key information.

本发明的第四个方面提供上述的光盘制造装置,其中,激光束强度变化单元包括:调制单元,用于根据经加密的数字数据产生调制信号;光学调制单元, 用于根据调制信号控制激光束的通/断。 A fourth aspect of the present invention provides an optical disc manufacturing apparatus described above, wherein the laser beam intensity changing means comprises: a modulation unit for generating a modulation signal based on the encrypted digital data; an optical modulation unit, for controlling the laser beam in accordance with a modulation signal on / off. 本发明的第五个方面提供上述的光盘制造装置,其中,密钥信息记录单元包括:用于产生激光束的激光束产生单元;光强度调制单元,用于根据密钥信息调制激光束;以及会聚单元,用于将经调制的激光束会聚和照射在光盘上的预定位置上。 A fifth aspect of the present invention provides the above-described optical disk manufacturing apparatus, wherein the key information recording unit comprising: a laser for generating a laser beam of the beam generating means; light intensity modulation means for modulating the laser beam according to the key information; and converging unit, for applying a predetermined position of the laser beam is condensed and irradiated on the optical disc is modulated on.

本发明的第六个方面提供用于制造光盘(该光盘具有经记录的数字数据,可以通过激光束的照射而读出)的光盘制造方法,包括:加密步骤,用于根据多个密钥信息对输入数字数据加密;光盘基片制造步骤,用于制造光盘基片,在其上记录以物理结构变化形式的经加密数字数据和密钥信息;反射膜形成步骤, 用于在光盘基片上形成反射膜;以及密钥信息记录步骤,用于在形成反射膜的基片上记录密钥信息。 Providing a sixth aspect of the present invention (having a digital data by the optical disk recording and to be read out by irradiating a laser beam) to the optical disc manufacturing method for manufacturing an optical disc, comprising: an encryption step of, in accordance with a plurality of key information for encryption of the input digital data; disc substrate manufacturing step of manufacturing a disc substrate, in order to record the encrypted digital data structure in the form of a physical change and the key information thereon; a reflection film forming step for forming on the optical disc substrate reflective film; and a key information recording step for recording the key information on the substrate forming a reflective film.

本发明的第七个方面提供上述的光盘制造方法,其中,光盘基片制造步骤包括:曝光步骤,用于根据经加密的数字数据和密钥信息将激光束会聚在光盘上,以使原版光盘曝光;压模形成步骤,用于在经曝光的原版光盘上应用化学处理以改变其上的物理结构;以及再现步骤,用于传送在压模上的物理结构变化,因而产生多个光盘基片。 A seventh aspect of the present invention provides the above method for manufacturing an optical disc, wherein the disc substrate manufacturing step comprising: an exposure step, according to the digital data and the encrypted key information, the laser beam converged on the optical disk, so that the original CD exposure; stamper forming step for use in the exposed master disc chemically treated to alter the physical structure thereon; and a reproduction step of transmitting a physical structural change on the stamper, thereby producing a plurality of optical disk substrates .

本发明的第八个方面提供上述的光盘制造方法,其中,密钥信息记录步骤包括:用于产生激光束的激光产生步骤;调制步骤,用于根据密钥信息调制激光束;以及激光照射步骤,用于在光盘基片上会聚和照射激光束。 An eighth aspect of the present invention provides the above optical disc manufacturing method, wherein the key information recording step comprises: a laser for generating a laser beam generating step; modulating step, a laser beam modulated in accordance with the key information; and a step of laser irradiation , for converging on a disc substrate, and irradiating a laser beam.

本发明的第九个方面提供一种光盘,它具有以物理结构变化形式记录的数字数据,如此地组成,因而通过从其反射膜反射的入射激光束来再现数字数据, 其中,数字信号根据多个密钥信息加密,将多个密钥信息中的一个以物理结构变化的形式记录在光盘上,而且至少将多个密钥信息中的一个以反射膜的反射率变化形式记录在光盘上。 A ninth aspect of the present invention to provide an optical disk having a physical change in the form of digital data structure to be recorded, so the composition, and thus the digital data reproduced by the incident laser beam reflected from the reflection film, wherein the digital signal is a multi- information encryption keys, one of a plurality of the key information recorded in the form of a physical change in the structure of the optical disc, and at least one of the plurality of the key information recorded in the form of reflectance change of the reflection film on the optical disc.

本发明的第拾个方面提供一种光盘再现方法,用于再现具有己记录经加密的数字数据的光盘,其中,所述方法包括:第一再现步骤,用于再现以物理结构变化形式记录在光盘上的第一密钥信息;第二再现步骤,用于再现以反射率变化形式记录在光盘上的第二密钥信息;以及解密步骤,用于再现记录在光盘上的数字数据和通过使用第一和第二密钥信息对再现的数字数据解密。 The first aspect of the present invention pickup provides an optical disc reproduction method for reproducing an optical disc having already recorded encrypted digital data, wherein said method comprises: a first reproducing step for reproducing the recorded physical variations in structure the first key information on the optical disc; and a second reproducing step for reproducing a second key information recorded on the optical disk in the form of reflectance change; and a decryption step for reproducing the digital data recorded on the optical disk and by the use the first and second key information decrypting the reproduced digital data. One

本发明的第拾个方面应用于一种光盘装置或光盘记录方法,根据边缘检测 The first aspect of the present invention, the pick-up is applied to an optical disk apparatus or an optical disc recording method, according to the edge detection

9的结果和记录信号,照射到光盘上的记录激光束的光束强度间歇地升高,局部地改变光盘的反射率,因此当反射光束接收结果通过预定的参考强度时,改变了定时。 9 results and the recording signal, recording beam intensity irradiated to a laser beam on the optical disk intermittently raised locally changing the reflectivity of the optical disc, so that when reflected by the beam receiving result of the predetermined reference strength, the timing of the change.

在应用于一种光盘的本发明中,反射率局部地变化,因而从在凹坑和标记上扫描激光束而得到的反射光束接收结果有抖动,根据局部反射率变化,记录附加的数据。 In the present invention applied to an optical disc, the reflectance locally varies, and thus receives the light beam reflected from the pit and the results of marks obtained by scanning the laser beam jitter, local reflectivity changes according to the recording of additional data.

当通过预定参考强度的反射光束接收结果改变时,间隙性地升高照射到光盘上的记录激光束的光束强度,局部地改变光盘的反射率和定时,因而再现了附加数据而不是非法地再现光盘,记录了诸如光盘鉴别代码等附加数据,通过处理和再现信号再现附加数据,以在以凹坑或标记图案形式记录的数据再现中没有任何对再现不利的影响。 When the result is changed by a predetermined receiving intensity of the reflected reference beam, the intensity of the light beam intermittently raising the recording laser beam irradiated on the optical disc, locally changing the reflectivity of the optical disc and timing, thereby reproducing the additional data instead of the reproduced illegally optical disc, such as an optical disc recorded identification codes and other additional data, the additional data reproduced by the reproduction signal processing and no effect on reproduction in the negative to reproduce data pits or marks recorded in the form of a pattern.

在应用于一种光盘的本发明中,反射率局部地变化,因而从在凹坑和标记上扫描激光束而得到的反射光束接收结果有抖动,根据局部反射率变化,记录附加的数据,因而再现了附加数据而不是非法地再现光盘,记录了诸如光盘鉴别代码等附加数据,通过处理和再现信号再现附加数据,以在以凹坑或标记图案形式记录的数据再现中没有任何对再现不利的影响。 In the present invention applied to an optical disc, the reflectance locally varies, and thus the beam reception result of scanning a laser beam reflected from the pit and the mark on the obtained jitter, local reflectivity changes according to the recording of additional data, thus reproducing additional data instead of reproducing the optical disk illegally, the optical disc recording such as authentication codes and other additional data, and reproduce the additional data by processing the reproduced signal to reproduce data in the form of a pattern of pits or marks recorded on the reproducing no adverse influences.

此外,根据本发明的另外的发明,当应用于一种光盘装置或光盘记录方法时,根据主数据产生主调制信号,根据主调制信号使激光束照射在光盘上,因而在其上形成凹坑串或标记串,因而产生子调制信号和根据子调制信号使激光束的照射点偏向光盘的内/外区。 Further, according to the present invention further, when applied to an optical disc apparatus or an optical disc recording method, the master generates a modulated signal based on the master data on the optical disk, thereby pits are formed thereon based on the main signal modulated laser beam mark string or strings, thereby generating a modulation signal and a sub-inner / outer region of the optical disc according to the sub deflecting the modulated signal beam irradiation point of the laser.

此外,根据本发明,当应用于一种光盘时,如果根据凹坑或标记的长度和沿轨迹方向凹坑或标记之间的时间间隔记录主数据,那么就根据凹坑或标记从轨迹的中心向内/外区的偏差记录子数据。 Further, according to the present invention, when applied to an optical disc, if the time interval between the recording main data according to the lengths of pits or marks and pits or marks in the track direction, then in accordance with pits or marks from the track center inwardly offset / outer sub data recording region.

此外,根据本发明,当应用于一种光盘装置时,输出偏差检测信号,然后参考再现信号进行处理,因而再现的子信号以凹坑或标记从轨迹的中心为基准向内/外区的偏差的形式记录。 Further, according to the present invention, when applied to an optical disk apparatus, output deviation detection signal, and then reproducing the reference signal is processed, and therefore sub-signal reproduced from the pits or marks to the track center as a reference inner / outer region deviation in the form of records.

按照根据本发明的光盘装置的结构,如果根据主数据产生主调制信号以及根据主调制信号用激光照射形成凹坑串或标记串,根据子数据产生子调'制信号以及根据该子调制信号朝光盘的内/外区的方向偏移激光束的照射点,那么可以用在内/外区中的偏差的选择记录子数据,因此不干扰以凹坑或标记的形式记录的主数据的再现。 Sub-modulation 'system based on the sub-signal and a modulation signal toward the structure of an optical disk apparatus according to the present invention, if a primary modulated signal in accordance with the main data, and a pit string or a mark string formed by laser irradiation according to the main modulated signal generated in accordance with the subdata the direction of the optical disk / offset region outside the irradiation point of the laser beam, then the selected sub-data can be recorded with the inner / outer area deviation, and therefore does not interfere with reproduction of the main data in the form of pits or marks recorded. 也能使子数据记录成防止非法复制和用再现主数据的光学拾音器和其它各种分配的数据一起再现以禁止非法的再现等等。 Also enables to prevent the sub-data recording reproduction prohibit illegal reproduction and illegal copying of data and the like together with the optical pickup for reproducing the main data, and other various distribution.

按照根据本发明的光盘的结构,如果根据凹坑或标记的长度和沿轨迹方向凹坑或标记之间的时间间隔记录主数据,根据凹坑或标记以轨迹的中心为基准向光盘的内/外区的偏差记录子数据,那么用凹坑或标记向光盘的内/外区的偏差的选择可以正确地再现主数据。 The structure of the optical disk according to the present invention, if the recording main data interval according to the length of time between the pits or marks and pits or marks in the track direction, according to a track of pits or marks with reference to the center of the disc / deviation outer sub data recording region, then the main data can correctly be reproduced to a selection bias in / out area of ​​the optical disc with pits or marks. 此外,可以记录子数据而难于非法地再现, 用再现主数据的光学拾音器和其它各种分配的数据一起再现以禁止非法的再现等等。 Further, the sub-data may be recorded and difficult to reproduce illegally, the optical pickup to reproduce data with the main data, and other various illegal distribution reproduced along the reproduction is prohibited and the like.

此外,按照根据本发明的光盘再现装置的结构,如果输出偏差信号并且参考再现信号进行处理,因而根据凹坑或标记以轨迹的中心为基准向光盘的内/ 外区的偏差再现记录的子数据,以及从如上述构造的光盘能再现作为凹坑串或标记串的主数据,同样地,以朝向光盘的内/外区的凹坑和标记偏差的形式记录的子数据可以从同样的光盘再现。 Further, according to the structure of the optical disc reproducing apparatus according to the invention, if the output deviation signal and the reference signal for reproduction processing, and thus pits or marks in accordance with the track center as a reference sub data to reproduce the recorded deviation of the inner / outer region of the optical disc , and can be reproduced from the optical disk configured as described above can reproduce the main data as a pit string or a mark string, similarly, toward the sub-data in the form of disc / pits and deviation marks recorded from the outer region of the same disc . 偏差检测信号的电平根据朝向光盘的内/外区的凹坑和标记的偏差而变化。 Deviation detection signal level varies in accordance with pits and marks the deviation of the optical disc toward the inner / outer region.

此外,根据光盘再现方法的组成,如果用照射在光盘上的激光光束的反射光束再现以凹坑串和标记串形式记录的主数据,用相同的激光光束的反射光束再现以凹坑和标记向光盘的内/外区的偏差的形式记录的子数据,那么可以从光盘再现主和子两种数据,所述光盘具有用于禁止非法复制的各种记录的数据, 因此可以用用于再现以凹坑串等形式记录的数据的光学拾音器进行再现,并且难于非法复制。 Further, depending on the composition of the optical disk reproducing method, if the main data to reproduce pit string and mark string recorded in the form of a reflected beam of the laser beam is irradiated on the optical disc, the reproducing light beam reflected by the same laser beam to pits and marks sub-data in the form of a deviation of the CD-ROM / outer area of ​​the record, then the main and sub two data can be reproduced from the optical disk, said optical disk having a data for prohibiting illicit copying of various recording, and thus can be used for reproducing a concave the optical pickup data pit string recorded in the form of reproduction and the like, and an illegal copy difficult.

附图说明 BRIEF DESCRIPTION

图l是一方框图,例示了根据本发明一实施例的用于制造光盘的装置。 Figure l is a block diagram illustrating an apparatus for fabricating an optical disk according to an embodiment of the present invention. 图2是一方框图,示出了为图1所示的光盘制造装置提供的切割机。 FIG 2 is a block diagram showing a cutter provided for the optical disc manufacturing apparatus 1 shown in FIG. 图3A到3D例示了根据本发明一实施例的光盘;A是光盘的透视图;B是引导区的示意图;C是数据区的示意图;以及D是引出区的示意图。 3A to 3D illustrate an optical disc according to an embodiment of the present invention embodiment; A is a perspective view of an optical disc; B is a schematic view of the boot; C is a schematic view of the data area; and D is a schematic view of the lead-out area.

图4是一方框图,例示了根据本发明实施例的用于再现光盘的再现装置。 FIG 4 is a block diagram illustrating an optical disc playback device according to an embodiment of the present invention. 图5是一流程图,示出了为图4所示用于再现光盘的再现装置提供的系统控制器的工作情况。 FIG 5 is a flowchart showing the operation of the system shown in FIG. 4 for reproducing controller reproduces an optical disc apparatus provided.

图6是一方框图,示出了根据本发明一实施例用于处理CD光盘的光盘装 FIG 6 is a block diagram showing an optical disk apparatus for processing a CD disc according to an embodiment of the present invention,

图7A到7E是CD光盘的截面图和定时图,所述CD光盘由图6所示的光盘装置处理。 7A to 7E is a cross-sectional view and a timing chart of a CD-ROM, a CD-ROM optical disc processing apparatus shown in FIG. 6.

图8A-1到8J-2是图6所示光盘的工作定时图。 An operation timing chart shown in FIG. 8A-1 of the optical disc to 8J-2 in FIG. 6.

图9是一方框图,示出了图6所示光盘装置的延迟电路、边缘检测电路和调制电路。 FIG 9 is a block diagram showing an optical disk apparatus of the delay circuit shown in Figure 6, the edge detection circuit and a modulation circuit.

图10是一方框图,示出了一CD播放机,它用于再现通过使用图6所示的光盘装置而记录的CD光盘。 FIG 10 is a block diagram showing a CD player, a CD which is used by using an optical disc reproducing apparatus shown in FIG. 6 and recorded.

图11是一方框图,示出了图IO所示的CD播放机的光盘鉴别代码再现电路。 FIG 11 is a block diagram showing an optical disk authentication code of the CD player shown in FIG reproducing circuit IO.

图12是一方框图,示出了根据本发明一实施例用于产生光盘的光盘装置。 FIG 12 is a block diagram showing an optical disk apparatus for producing an optical disc according to an embodiment of the present invention. 图13是一方框图,示出了为图12所示的光盘装置提供的密钥调制电路。 FIG 13 is a block diagram showing a modulation circuit to provide the key to the optical disk apparatus 12 shown in FIG. 图14是图13所示的密钥调制电路的工作定时图。 FIG key 14 is an operation timing chart of the modulation circuit 13 shown in FIG. , 图15是光盘装置的方框图,所述光盘装置用于再现来自光盘的数据,所述光盘是通过使用图12所示的光盘装置而产生的。 FIG 15 is a block diagram of an optical disk apparatus, the optical disk apparatus for reproducing data from an optical disc, the optical disc by using the optical disk apparatus shown in FIG. 12 is generated.

图16是一方框图,示出了为图15所示的光盘装置提供的密钥调制电路。 FIG 16 is a block diagram showing a modulation circuit provided for the key optical disc apparatus 15 shown in FIG. 图17是图16所示的密钥调制电路的工作定时图。 FIG key 17 is an operation timing chart of the modulation circuit 16 shown in FIG.

具体实施方式 Detailed ways

(ll)在一实施例中的结构 (LL) structure of an embodiment

下面,参考附图,将详细描述根据本发明一实施例制造光盘的装置和方法, 以及光盘。 Hereinafter, with reference to the accompanying drawings, it will be described in detail apparatus and a method of manufacturing the optical disc, and an optical disk according to an embodiment of the present invention.

首先,参考图l,描述根据本发明一实施例的、用于制造光盘的装置和方法。 First, referring to FIG. L, described in accordance with an embodiment of the present invention, apparatus and a method for manufacturing an optical disc. 在本实施例中,用于制造光盘的装置是用于制造CD光盘(CD)的装置。 In the present embodiment, the apparatus for manufacturing an optical disc apparatus for manufacturing a CD disc (CD) is used. 在图1中,将数字磁带录音机从磁带中再现出来数字音频信号SA提供给第一加密电路22,并且根据第一密钥信息发生电路24提供的第一密钥信息信号KY1 对数字音频信息SA加密。 In FIG 1, the digital audio tape recorder tape from the reproduced digital audio signal SA is supplied to a first encryption circuit 22, and the digital audio information SA information signals based on the first key KY1 first key information generating circuit 24 provides encryption. 将来自第一加密电路22的经加密的数字音频信号 The digital audio signal from the encrypted first encryption circuit 22

12SB提供给第二加密电路23,并且根据第二密钥信息发生电路25提供的第二密钥信息信号对信号SB加密。 12SB encryption circuit 23 is supplied to the second, and the signal SB in accordance with a second encryption key information the second key information signal generating circuit 25 is provided. 将来自第二加密电路23的经双重加密的数字音频信号SC和来自第二密钥信息发生电路25的第二密钥信息信号KY2提供给光盘基片制造单元2,以制造光盘基片,在所述基片上以凸-凹坑的形式记录经双重加密的数字音频信号SC和第二密钥信息信号KY2。 The second key information from the second signal KY2 encryption circuit 23 via the double encrypted digital audio signal SC and the second key information from the generating circuit 25 is supplied to the optical disc substrate manufacturing unit 2, to fabricate a disc substrate, in convex on the substrate - by recording the doubly encrypted digital audio signal SC and the second key KY2 information signal in the form of pits.

在为光盘基片制造单元2提供的切割机3中,用第二加密电路23提供的经双重加密的数字音频信号SC和第二密钥信息发生电路25提供的第二密钥信息信号KY2来调制激光束,并且使原版光盘26在经调制的激光束下曝光。 In the second key information to the optical disc substrate signal producing unit 2 provided in the cutting machine 3, with the encryption circuit 23 through the second double encrypted digital audio signal SC and the second key information generating circuit 25 to provide KY2 modulated laser beam, and the master optical disc 26 exposed to a laser beam modulated.

通过显影和电镀单元27,经曝光的原版光盘26经过显影工艺和电镀工艺, 因而获得压模28。 And plating by the developing unit 27, the master optical disc 26 exposed through the developing process and the plating process, thereby obtaining the stamper 28. 将压模28设置在注模机29上,由注模机29对诸如聚碳酸酯等形成光盘基片4的塑料材料进行模压。 The stamper 28 is disposed on the injection molding machine 29, an injection molding machine for molding disc substrate 29 is formed of plastic material 4, such as a polycarbonate or the like. 以极小的凸-凹(凹坑)的形式,将经双重加密的数字音频信号SC和密钥信息信号KY2记录在上述光盘基片4上。 Very small convex - concave (pit) in the form of the double-encrypted by the digital audio signal SC and the key KY2 recorded information signals on said disc substrate 4.

接着,通过反射膜形成单元41在光盘基片4上形成反射膜,因而得到一半成品的光盘5。 Next, a reflective film unit 41 is formed on the optical disk substrate 4 formed by the reflection film, thereby obtaining a semi-finished optical disc 5. 在半成品光盘5上,以凸-凹坑的形式,记录经双重加密的数字音频信号SC和来自第二密钥信息发生电路25的第二密钥信息信号KY2,并且使用于反射激光束的反射膜形成于凹坑的对面。 On the semi-finished optical disc 5, a convex - form of pits, by recording the doubly encrypted digital audio signal SC and the second key KY2 25 information signal from the second key information generating circuit, and to use the reflected laser beam reflected film is formed opposite the pits. 但是,来自第一密钥信息发生电路24的第一密钥信息信号KY1不记录在半成品光盘5上。 However, the first key KY1 information signal generating circuit 24 from the first key information is not recorded on the optical disc 5 semifinished product. 因此,不可能再现经记录的音乐,因为当将半成品光盘5装到光盘播放机中时,通过第一加密电路22进行的加密不能按原样解密。 Thus, impossible to reproduce by the musical recording, because the semi-finished optical disc 5 when the disc loaded into the player, a first encryption by the encryption circuit 22 as such can not be decrypted.

最后,将半成品光盘5装到CD-R记录单元7中。 Finally, the semi-finished optical disc 5 loaded into the CD-R recording unit 7. 在CD-R记录单元7中, 将来自第一密钥信息发生电路24的第一密钥信息信号KY1提供给计算机6, 响应于计算机6的命令,在没有记录用户数据的区(引出区)接受一个访问,并且附加记录来自第一密钥信息发生电路24的第一密钥信息信号KY1。 In the CD-R recording unit 7, the first key information from the signal circuit 24 KY1 information generating first key to the computer 6, the computer 6 in response to a command in the user data area not recorded (lead-out area) receiving an access, and additional recording information signal from the first key KY1 circuit 24 first key information generating. 由CD-R 记录单元7附加记录的信息信号是以反射膜的反射率变化的形式记录的,所述反射膜由反射膜形成单元形成。 Information from the CD-R signal recording unit 7 is reflectance of additional recording in the reflective film changes in the form of recording, the reflective film is formed of a reflection film forming unit.

在如上所述完成的CD光盘(成品光盘)8上,记录了来自第二密钥信息发生电路25的第二密钥信息信号KY2、来自第一密钥信息发生电路24的葶一密钥信息信号KY1、以及从数字磁带录音机21得到的再现音频信号。 As described above on the finished CD-ROM (compact disc finished) 8, the second key information is recorded KY2 25 second signal from the key information generation circuit Ting circuit 24 a first key information from the key information occurs signal KY1, and a reproduction signal 21 obtained from the audio digital tape recorder. 当用下述光盘再现装置来再现记录在CD光盘8上的音乐数据等时,有可能从CD光盘8上得到第一密钥信息信号KY1和第二密钥信息信号KY2,可以对双重加密解密,并且用户可以在如同传统CD光盘的相同状态下欣赏音乐。 When the optical disk reproducing apparatus with the following reproduction of the music data recorded on the CD-ROM 8 or the like, it is possible to obtain the first key information and second key information signal KY1 KY2 signal from CD-ROM 8, the double encryption can decrypt the and the user can listen to music in the same state as in a conventional CD discs.

第一加密电路22按照DES代码,根据第一密钥信息发生电路24生成的第一密钥信息信号KY1对数字音频信号SA加密,并且生成经加密的数字音频信号SB。 DES encryption circuit 22 in accordance with a first code in accordance with the first key information generating circuit 24 generates first key KY1 information signal encrypted digital audio signal SA, and to generate encrypted digital audio signal SB. 这里,DES代码是数据加密标准的縮写。 Here, DES is an abbreviation of Data Encryption Standard Code of. 这是广泛使用的一种加密方法。 This is a widely used encryption method. 同样,第二加密电路23按照DES代码,根据第二密钥信息发生电路25 生成的第二密钥信息信号KY2对数字音频信号SB解密,并且生成经双重加密的数字音频信号SC。 Similarly, the second DES encryption circuit 23 in accordance with the code signal in accordance with the second key information the second key KY2 information generating circuit 25 generates the decrypted digital audio signal SB, and generate double encrypted digital audio signal SC.

每当切割一新的光盘时,第一密钥信息发生电路24和第二密钥信息发生电路25产生第一密钥信息信号KY1和第二密钥信息信号KY2。 Whenever a new cutting disc, generating a first key information generating first key information signal 25 and the second key KY1 KY2 information signal circuit 24 and second circuit information generating key. 己知用于产生这种密钥信息信号的电路包括:例如, 一个LFSR(线性反馈移位寄存器)。 This known circuit for generating key information comprising a signal: for example, a LFSR (Linear Feedback Shift Register).

接下来,参考图2,描述图1所示的切割机3的结构。 Next, with reference to FIG 2, the structure of the cutting machine shown in FIG. 3. 如上所述,在激光束的曝光下,用切割机3在原版光盘26上记录经双重加密的数字音频信号SC 和第二密钥信息信号KY2。 As described above, in the exposure laser beam, with a cutter 3 on the recording master disc 26 by the double-encrypted digital audio signal SC and the second key information signal KY2. 调制电路31用CD光盘专用的数据处理过程,对经双重加密的数字音频信号SC进行处理,从而产生EFM信号SD,并且将其输出到光调制器35。 The modulation circuit 31 with a dedicated CD-ROM data processing for double-encrypted by the digital audio signal SC is processed to generate the EFM signal SD, and outputs it to the optical modulator 35. 更详细地说,将经双重加密的数字音频信号SC与误差校正信号相加,然后经过交错处理,EFM调制,产生EFM信号SD。 More specifically, the double-encrypted by the digital audio signal SC and the error correction signal are added, and after interleaving, EFM modulation, EFM signal generating SD. 调制电路31将子代码数据插入EFM信号SD的子代码区中,其中子代码数据包括由子代码生成器提供的TOC(内容表)子代码发生器,附图中未示出子代码生成器。 Modulation circuit 31 inserts the subcode data region codes in the EFM signal SD, which includes subcode data supplied by subcode generator TOC (Table of Contents) subcode generator, not shown in the drawings subcode generator.

调制电路32对第二密钥信息信号KY2进行FM-调制,并且将其作为模拟波密钥信息调制信号KYD,输出到光调制器34。 Modulation circuit 32 for the second key KY2 FM- modulated information signal, and sends it as an analog modulated wave signal KYD key information, output to the optical modulator 34. FM调制的原理与记录光盘(例如,MD(小型光盘))之地址信息所用的原理相同,其详细描述省略。 The same principle and the principle of FM modulation recordable optical disc (e.g., MD (Mini Disc)) is used for address information, and a detailed description thereof will be omitted. 在FM调制中,嵌入一时钟信号或类似信号,以便例如可以从密钥信息调制信号KYD 中恢复出密钥信息信号KY2。 In FM modulation, embedding a clock signal or the like, for example, to recover the key information from the key information modulation signal KY2 in KYD signal.

调制电路32由图中未示的系统控制器设置,因此它仅在切割机3对引导区作切割时才工作。 Modulation circuit 32 is set by a controller not shown in the drawing the system, so it works only when the cutter unit 3 for cutting the boot area. 因此,在切割机3切割数据区和引出区的时间期间,密钥信息调制信号KYD保持恒定电压,并且光调制器34不调制信号。 Thus, during the time cutter 3 cutting the data area and a lead-out area, the key information modulated signal KYD voltage remains constant, and the optical modulator 34 does not modulate the signal.

主轴马达38使原版光盘26旋转。 The spindle motor 38 causes rotation of the master disc 26. 主轴伺服电路39控制主轴马逸。 The spindle servo circuit 39 controls the spindle motor Yi. 实际上,在每个预定的旋转角处,输出信号电平上升的FG信号。 Indeed, rising at every predetermined rotation angle, the output signal level of the FG signal. FG信号由位于主轴马达38底部的FG信号发生器(未图示)输出。 FG signal from the spindle motor located in the bottom 38 of the FG signal generator (not shown) outputs. 主轴伺服电路39驱动主轴马达38,以便将FG信号的频率调节到预定的频率。 The spindle servo circuit 39 drives the spindle motor 38 so as to adjust the frequency of the FG signal to a predetermined frequency. 如上所述,原版光盘26以预定的转速旋转。 As described above, the original optical disc 26 at a predetermined rotational speed.

记录激光源33将激光束Ll发射到光调制器34和光调制器35。 Recording laser light source 33 a laser beam Ll emitted to the light modulator 34 and the optical modulator 35. 记录激光源33包括:例如,气体激光器。 Recording laser light source 33 comprises: for example, a gas laser. 光调制器34和光调制器35包括电-声-光元件或类似元件。 Optical modulator 34 and the optical modulator 35 includes an electric - acoustic - optical element or the like. 光调制器34根据调制电路32提供的密钥信息调制信号KYD改变由记录激光源33发射的激光束的传播方向。 The key information 34 changes the modulation signal modulating circuit 32 provides KYD emitted light modulator by the recording laser light source 33 propagation direction of the laser beam. 换言之,光调制器34根据密钥信息调制信号KYD的电平,射出发射角略微变化的激光束L2。 In other words, the optical modulator 34 in accordance with the level of the key information of the modulated signal KYD emits a laser beam emission angle slightly modified L2. 一般将这种对激光束发射角的调制用于AOD(声光偏转器)。 Such general laser beam emission angle modulation is used for the AOD (acoustic optical deflector).

将传播方向被密钥信息调制信号KYD改变的激光束L2加到光调制器35 上,并且对应于调制电路31提供的EFM(八到十四调制)信号SD,由光调制器35对其进行接通/断开控制,并且发射成为激光束L3。 The direction of propagation of the modulated signal is applied to the key information KYD changed laser beam L2 on the light modulator 35, and corresponds (Eight to Fourteen Modulation) signal SD to the EFM modulation circuit 31 provided by its light modulator 35 ON / OFF control, and emits a laser beam becomes L3.

反射镜36沿这样的光路径方向反射激光束L3,其反射角例如与原版光盘26成卯度。 Such mirror 36 along the optical path direction of the reflected laser beam L3, which is for example the reflection angle to the original optical disk 26 d degrees. 物镜37将来自反射镜36的反射光束会聚在原版光盘26的记录面上。 The reflected light beam from the objective lens 37 converging mirror 36 on the recording surface of the optical disc master 26. 以使会聚光束点发生位置偏离的形式,将反射镜36反射的激光束L3之传播方向的变化(对应于密钥信息调制信号KYD)记录在光盘上。 Converging beam so that the spot form of a positional deviation occurs, the laser beam reflected by the mirror 36 changes the direction of propagation of L3 (corresponding to the modulated signal KYD key information) recorded on the optical disc.

刻螺纹装置(未图示)沿径向与原版光盘26的同步旋转, 一步一步地移动反射镜36和物镜37。 Engraved screw means (not shown) radially disc rotates in synchronization with the original 26, the step by step moving mirror 36 and the objective lens 37. 如上所述,激光束L3的会聚位置一步步地移动,例如,从原版光盘26的内区向外区移动,从而在原版光盘26上形成螺旋形轨迹。 As described above, the converging position of the laser beam L3 is moved step by step, e.g., moving outwardly from the inner region of the optical disc master zone 26 to form a spiral track on the optical disc master 26. 对应于EFM信号SD,在轨迹上连续形成凹坑。 Corresponding to the EFM signal SD, pits are formed continuously on the track. 如上所述,由于光调制器34对激光束L2和L3的传播方向进行调制,使形成在引导区上的凹坑串的中心位置对应于密钥信息调制信号KYD,相对轨迹作横向偏移。 As described above, since the optical modulator 34 modulates the laser beam propagation direction of L2 and L3, formed on the center position of the lead-in area of ​​the pit string corresponding to the key information modulation signal KYD, relative trajectory transversely offset.

将原版光盘26曝光在由经双重加密的数字音频信号SC和第二密钥信息信号KY2调制的激光束L3中。 The master optical disc 26 exposed to the beam by a doubly encrypted digital audio signal SC and the second key KY2 modulated information signal in the laser light L3.

如图1所示,经曝光的原版光盘26经过显影工艺和电镀工艺,形成压模28。 As shown in FIG. 1, the master optical disc 26 exposed through the developing process and the plating process, the stamper 28 is formed. 压模28设置在注模机29上,形成由诸如聚碳酸酯等塑料材料形成的光盘基片4。 The stamper 28 is disposed on the injection molding machine 29, is formed optical disc substrate 4 formed of a plastic material such as polycarbonate. 在光盘基片4上形成反射膜,得到一半成品光盘5上。 Forming a reflective film on the disc substrate 4, to obtain a semi-finished product on the optical disk 5. 最后,将半成品光盘5装到CD-R记录单元7中。 Finally, the semi-finished optical disc 5 loaded into the CD-R recording unit 7. 在CD-R记录单元7中,响应于计算禾九6 的命令,访问没有记录用户数据的区域(引出区),并附加记录来自第一密钥信 In the CD-R recording unit 7, in response to the calculated command Wo nine 6, no access to the user data recording area (lead-out area), and a first key from the additional recording channel

15息发生电路24的第一密钥信息信号KY1。 A first key 24 of the information signal circuit 15 KY1 interest occurs. 附加记录在CD-R记录单元的信息信号是以反射膜之反射率变化的形式记录的,所述反射膜由反射膜形成机41 形成。 Additional recording in CD-R recording unit information signal is a change of reflectance of the reflective film is recorded in the form of the reflective film is formed of a reflective film-forming machine 41.

基本上,CD-R记录单元7与市场上可得到的CD-R单元具有相似的结构, 除了将CD-R单元改成可以访问引出区。 Substantially, CD-R recording unit 7 and the CD-R units available on the market has a similar structure, except that the CD-R into access units lead-out area.

图3A示意地示出了如上所述完成的CD光盘8。 3A schematically illustrates the CD-ROM 8 is completed as described above. 如图3A所示,将CD光盘8分成三个区。 3A, the CD-ROM 8 is divided into three regions. 最里面的圆周区域是引导区(导入)LI,中间区域是数据区DA, 而最外面的区域是引出区(引出)LO。 Innermost peripheral area is a boot area (introduction) LI, middle area is a data area DA, while the outermost area is the lead-out area (lead-out) LO.

在引导区LI上,记录用于访问CD光盘8的TOC信息和第二密钥信息信号KY2。 In the lead-in area LI, a recording TOC information for accessing the CD-ROM signal and the second key information is KY2 8. 图3B例示了当用显微镜观察引导区时所得到的示意图,其中,以凹坑的形式记录TOC信息。 3B illustrates a schematic view of a lead-in area, when viewed with a microscope obtained, wherein TOC information is recorded in the form of pits. 每个凹坑的中心位置略微偏离轨迹的中心,以偏离的形式记录第二密钥信息信号KY2。 The center position of each pit is slightly offset from the center of the track, the second key information recorded in the form of offset signals KY2.

数据区DA用于记录经双重加密的数字音频信号SC。 DA data area for recording the doubly encrypted by the digital audio signal SC. 当用显微镜观察这一区域时,可发现经双重加密的数字音频信号SC是以凹坑的形式记录的,例如,如图3C所示。 This region when viewed with a microscope, it was found by the double encrypted digital audio signal SC is recorded in the form of pits, for example, as shown in Figure 3C. 由于数据区不记录第二密钥信息信号KY2,因此每一凹坑的位置不偏移。 Since the data area of ​​the second key information is not recorded signal KY2, and therefore does not shift the position of each pit.

在引出区LO上,通过CD-R记录单元7记录第一密钥信息信号KY1。 In the lead-out area LO, recorded CD-R 7 by the recording means first information signal key KY1. 当用显微镜观察这一区域时,可发现第一密钥信息信号KY1是以反射率变化的形式记录的,例如,如图3D所示。 This region when viewed with a microscope, it was found first key KY1 information signal is recorded as a change in reflectivity, for example, shown in Figure 3D. 不用说,该信息不是作为物理变化(凹-凸)而记录的。 Needless to say, the information is not a physical change (concave - convex) and recorded.

例如,假定一个盗版光盘制造者得到一如上所制造的CD光盘8,试图通过将从CD光盘8获得的再现信号提供给切割机来制造盗版光盘。 For example, assuming a manufacturer to obtain a pirated disk as a CD-ROM manufactured 8 attempting to reconstruct the signal from the CD-ROM 8 obtained is supplied to the cutting machine to manufacture pirated optical discs. 结果,将记录在引导区LI的TOC信息、数据区的信息以及引出区的信息全都提供给了切割机,并且记录在盗版光盘上。 As a result, the TOC information recorded in the lead-in area LI, data area information, and information supplied to all the lead-out area of ​​the cutting machine, and is recorded on the pirated optical discs. 然而,以每个凹坑位置偏离的形式记录在引导区LI上的第二密钥信息信号KY2没有在再现信号中出现,因此没有记录在盗版光盘上。 However, each of the pits recorded in the form of a position deviation signal of the second key information on the lead-in area LI KY2 does not appear in the reproduced signal, and therefore not recorded in pirated optical discs. 由于使用以上述方式制造的盗版光盘不能对第二密钥信息信号KY2 解密,所以不可能再现音乐信号等。 Since the use of pirated discs manufactured as described above can not decrypt the second key KY2 information signal, it is impossible to reproduce music signals. 因此,盗版光盘没有用,并且通过上述方法的使用,阻止了盗版光盘的制造。 Thus, the pirated optical disk is not used, and by using the above method, to prevent the manufacture of pirated optical discs.

接下来,假定一个盗版光盘制造者得到一如上所制造的CD光盘8,试图通过物理传送凹坑的方法制造盗版光盘。 Next, assume that the manufacturer to obtain a pirated disk as a CD-ROM 8 fabricated, trying to make pirated disks by physical transfer pits. 在这种情况下,很可能将以位置偏离 In this case, the positional deviation will likely

的形式记录在引导区LI上的第二密钥信息信号KY2按原样传送到盗版光盘上。 Second key information recorded in the form KY2 signal on the lead-in area LI as it is transmitted to the pirated optical discs. 但是,记录在引出区LO的第一密钥信息信号KY1是以反射率变化的形式记录的,因而没有造成物理的凸-凹。 However, the first key information recorded in the lead-out area LO signal KY1 the change in reflectivity is recorded in the form of, and thus did not cause a physical convex - concave. 因此,没有将第一密钥信息信号KY1传送到盗版光盘上。 Thus, the first key information is not transmitted to the signal KY1 pirated optical discs. 由于使用以上述方式制造的盗版光盘不能对第一密钥信息信号KY1的加密结果进行解密,所以不可能再现。 The use of pirated disks can not be produced in the above manner on the result of the first encryption key KY1 information signal is decrypted, it is impossible to reproduce. 因此,盗版光盘没有用,通过上述方法的使用,阻止了盗版光盘的制造。 Thus, the pirated optical disc does not work, by using the above method, to prevent the manufacture of pirated optical discs.

如上所述,根据本发明的实施例,通过以物理方式传送光盘的方法和直接将再现信号提供给切割机的方法中的任何一种方法,有可能防止盗版光盘的制造。 As described above, according to embodiments of the present invention, by a method of the optical disc physically and directly transfer any signal to one of the methods of reproducing cutter, it is possible to prevent the manufacture of pirated disks.

下面,参考图4,描述用于再现如上所制造的CD光盘的再现装置50。 Next, referring to FIG. 4, for reproducing the optical disc apparatus 50 CD reproducing manufactured as above.

图4所示的再现装置50受到系统控制器64的控制。 The reproducing apparatus shown in FIG 50 is controlled by the system controller 64. 主轴马达51使CD 光盘8转动。 A spindle motor 51 so that the CD disc 8 rotates. 伺服电路52控制主轴马达51和光学拾音器53,由此进行预定的操作。 The servo circuit 52 controls the spindle motor 51 and optical pickup 53, thereby performing a predetermined operation. 将光学拾音器53产生的再现RF信号提供给二进制化电路54。 The reproduction RF signal of the optical pickup 53 is supplied to the binary circuit 54. 将来自光学拾音器53的推挽信号PP提供给A/D转换器61 。 The push-pull signal PP from the optical pickup 53 is supplied to the A / D converter 61.

二进制化电路将所提供的再现RF信号与预定的限制电平相比较,因而产生一个二进制信号。 Binarizing the reproduction RF signal circuit provided with a predetermined slice level, thereby generating a binary signal. 将二进制信号提供给EFM解调电路55。 The binary signal is supplied to the EFM demodulating circuit 55. EFM解调电路55 从二进制信号中解调出EFM,因而产生一个8位信号,并且将所产生的8位信号提供给ECC(误差校正电路)电路56。 EFM demodulating circuit 55 demodulates the binary EFM signal, thereby generating an 8-bit signal, and supplies the 8-bit signal to the generated ECC (error correction circuit) circuit 56.

ECC电路56根据在记录期间编码而增加的ECC(误差校正代码)校正在EFM解调电路55之输出中的误差。 ECC circuit 56 corrects errors in the output of the EFM demodulating circuit 55 in accordance with the increase of coding during recording ECC (error correction code). 这种误差是由于,例如,CD光盘8的缺陷而造成的。 This error is due to, for example, CD-ROM 8 of defects caused.

另一方面,A/D转换器61使推挽信号数字化(量化),并且把它提供给DSP62,作为数字再现信号DRF。 On the other hand, A / D converter 61 so that the push-pull signal is digitized (quantization), and supplies it to the DSP62, as a digital reproduction signal DRF. 由于推挽信号PP正比于凹坑相对轨迹中心的位置偏离,所以推挽信号包括被记录为第二密钥信息信号KY2的信息。 Since the position of the push-pull signal PP is proportional to the deviation of the pit relative to the track center, it comprises a push-pull signal information is recorded as the second key KY2 information signal. DPS62是进行数字信号处理处理器,它根据记录在内部的程序,处理数字再现信号DRF,并且对由调制电路32调制的FM调制进行解调,从而求得第二密钥信息信号KY2。 DPS62 processor is a digital signal processing, it is within the recording program, the DRF processes the digital reproduction signal, and the FM modulation by the modulation circuit 32 demodulates the modulated, information signal so as to obtain the second key KY2.

第一密码处理电路57对加密进行解密,所述加密是通过如上所确定的第二密钥信息信号KY2的使用而施加到ECC电路156的输出信号的。 A first encryption processing circuit 57 to decrypt the encrypted, the encrypted key information by using the second signal KY2 determined as above is applied to the output signal of the ECC circuit 156. 将从中解密出第二加密(由图1所示的第二加密电路加密)的信息相继地提供给第二加密处理电路58。 Decrypting information from a second encrypted (encrypted second encryption circuit shown in FIG. 1) is sequentially supplied to the second encryption processing circuit 58. 同时,将来自ECC电路56的信号也提供给存储器63。 Meanwhile, the signal from the ECC circuit 56 is also supplied to the memory 63. 系统控制器64控制存储器63,将第一密钥信息信号KY1存储在存储器63中。 The system controller 64 controls the memory 63, the first key KY1 information signal stored in the memory 63. 结果, 将存储在存储器63中的第一密钥信息信号KY1提供给第二密码处理电路58, 因此第二密码处理电路58可以对第一加密(由图1所示的第一加密电路22加密) 进行解密。 As a result, the first key KY1 information signal stored in the memory 63 is supplied to a second encryption processing circuit 58, the second encryption processing circuit 58 may encrypt the first encryption 22 (a first encryption circuit shown in FIG. 1 ) to decrypt.

由于如上所述对加密信号进行解密,所以使数字音频信号SA在第二密码处理电路58的输出处恢复。 Since as described above to decrypt the encrypted signals, so that the digital audio signal SA recovered second encryption processing circuit 58 at the output. 如上所述所得到的数字音频信号SA通过D/A转换器59转换成模拟音频信号,并且送到输出端60,提供给扬声器或类似的用于发声的装置。 The digital audio signal SA obtained as described above by D A converter 59 converts / into an analog audio signal and to an output terminal 60, is supplied to a speaker or similar device for utterance.

由系统控制器64完成上述的解密操作。 The above-described decryption operation by the system controller 64. 系统控制器64是如此地构造的, 每次装载了一个新的光盘8时,通过再现装置50执行如图5所示的流程图中示出的操作,因而始终如一地实现解密处理。 The system controller 64 is so configured, loaded each time a new optical disc 8, the flowchart is executed by the reproducing apparatus 50 shown in Figure 5 shown in operation, and thus the decryption process to achieve consistently.

在由图5所示的系统控制器64完成的处理中,首先,在步骤ST-1中,系统控制器64给出一个命令到系统的各个部件,包括伺服电路52,指令从光学拾音器发射的光束焦点移动到光盘8的引导区LI。 In the process performed by the system controller 64 shown in FIG. 5, first, at step ST-1, the system controller 64 gives a command to the various components of the system, includes a servo circuit 52, emitted from the optical pickup instruction to move the beam focus lead-in area LI of the optical disc 8. 其次,在步骤ST-2中,来自光学拾音器53的推挽信号PP通过A/D转换器61量化,并且由DSP62处理, 从而对作为第二密钥信息信号KY2记录的信息解码。 Next, in step ST-2, the push-pull signal PP from the optical pickup 53 through the A / D converter 61 quantization, and the processing by the DSP62, whereby as the second key information for decoding the information signal recorded KY2. 接着,在步骤ST-3中, 将经解码的第二密钥信息信号KY2提供给DSP62的输出端,并且保留该值。 Next, at step ST-3, the second key information provided by the decoded signal to the output terminal KY2 DSP62, and retains that value.

在步骤ST-4中,系统控制器64命令将光学拾音器发射的光束焦点移动到引出区LO。 In step ST-4, the system controller 64 commands the focus of the optical beam emitted from the pickup is moved to the lead-out area LO. 接着,在步骤ST-5中,系统控制器64指令将读出的第一密钥信息信号KY1存储在存储器63中。 Next, at step ST-5, the system controller 64 commands the read first key KY1 information signal stored in the memory 63. 如上所述,获得了第一密钥信息信号KY1 和第二密钥信息信号KY2,然后,系统控制器64控制整个系统,以便从CD 光盘8再现数据,发出声音。 As described above, the information signal to obtain a first key and the second key KY1 the KY2 information signal, then the system controller 64 controls the entire system to reproduce data from the CD-ROM 8, a sound.

如上所述,系统控制器64控制整个系统,以便读出记录在引导区LI和引出区LO的密钥信息,并对密码解密,然后产生声音。 As described above, the system controller 64 controls the entire system, so as to read LO recorded in the boot area LI and the lead-out area key information, and decryption, and generates a sound. 结果,可以防止当扬声器产生大的噪声声音时,不对加密进行解密。 As a result, the speaker can be prevented when a large noise sound, no encryption and decryption. ,

在CD光盘8是正常光盘(不是盗版光盘)的情况下,第一和第二密钥信息 In a normal optical disc is a CD 8 (not piracy optical disc), the first and second key information

18信号KY1和KY2都被正确地解码。 18 KY1 and KY2 signals are decoded correctly. 结果,第一和第二密码处理电路57和58 可以得到解密所需要的信息。 As a result, the first and second encryption processing circuits 57 and 58 can get the information needed to decrypt it. 因此,将第二密码处理电路58的输出提供给D/A 转换器59,将D/A转换器59的输出转换成例如音乐信号,由此用户可以欣赏记录在CD光盘8上的音乐。 Thus, the output of the second encryption processing circuit 58 is supplied to a D / A converter 59 converts the output of D / A converter 59 into, for example, a music signal, whereby the user can enjoy music recorded on the CD-ROM 8.

在再现由本发明制造光盘的装置得到光盘并再次将再现信号提供给切割机用以制造盗版光盘的情况下,盗版光盘没有以凹坑的位置偏离形式记录的第二密钥信息信号KY2。 In the optical disc reproducing apparatus obtained by the present invention for producing an optical disk and reproducing again the second key signal to the information signal KY2 cutting machine for manufacturing a case of the pirated optical disk, in the form of pirated optical discs without departing from the position of the recording pits. 因此,当试图用图4所示的光盘再现装置再现盗版光盘时,用户不能从如此的盗版光盘欣赏音乐。 Thus, when attempting to reproduce the optical disc reproducing pirated optical disk apparatus shown in FIG. 4, the user can listen to music from such a pirated optical discs. 在通过如前所述以传送光盘之物理结构的方法而得到盗版光盘的情况下,用户也不能欣赏音乐。 In the case where the method as described above to the physical structure of the optical disk transfer pirated optical disc obtained by the user can not listen to music.

在本实施例的上述例子中,虽然描述了第二密钥信息信号KY2是以凹坑的位置偏离形式记录的,但本发明不仅限于这种情况;例如,可以以凹坑宽度稍微变化的形式记录第二密钥信息信号KY2。 In the above example of the present embodiment, although the described second key KY2 information signal is deviated from the position recorded in the form of pits, but the present invention is not limited to this; for example, slight variations in pit width form second key information signal recording KY2. 在这情况下,对于光盘再现装置, 不需要用于检测推挽信号的光学检测系统,这简化了光盘再现装置的结构和降低了成本。 In this case, the optical disc reproducing apparatus, the optical detection system does not require a push-pull signal, which simplifies the structure of the optical disk reproducing apparatus and reduce costs.

(l-2)上述实施例的效果 Effect (l-2) the above-described embodiment

根据本发明的第一到第五个方面,因为用于制造光盘(光盘具有要由激光束的照射读出的经记录的数字数据)的光盘制造装置包括:加密单元,用于根据多个密钥信息对输入信号加密;光盘基片制造单元,用于制造光盘基片,以物理结构变化的形式将经加密的数字数据和密钥信息记录在其上;反射膜形成单元,用于在光盘基片上形成反射膜;以及密钥信息记录单元,用于在具有反射膜的光盘基片上记录密钥信息;所以可以得到呈现下述效果的光盘制造装置。 According to the first to the fifth aspect of the invention, because for manufacturing an optical disc (optical disc having to be read is irradiated by the laser beam by the digital data recording) an optical disc manufacturing apparatus comprising: an encryption unit for a plurality of dense encrypting the key information of the input signal; an optical disc substrate production unit, for producing an optical disc substrate, in the form of a physical change to the structure of the encrypted digital data and the key information recorded thereon; reflection film forming unit for optical disc a reflective film formed on a substrate; and a key information recording unit for recording the key information on the optical disc substrate having a reflection film; an optical disc manufacturing apparatus can be obtained exhibits the following effects. 详细地说,根据本发明的第一到第五个方面,因为用两种不同的方法(即物理结构变化和反射膜的反射率变化)来记录密钥信息,所以不仅通过物理传送不能对用本发明的制造装置制造的光盘进行再现,而且通过将本发明制造装置制造的光盘所再现出来的再现信号直接提供给切割机,也不能得到盗版光盘。 In detail, according to the first to fifth aspects of the present invention, since (i.e., change in reflectivity and changes in the physical structure of the reflective film) using two different methods for recording key information, not only by the physical transfer can not use an optical disc manufacturing apparatus for manufacturing the present invention is reproduced, and a reproduction signal reproduced by the optical disc manufacturing apparatus according to the present invention is made directly to the cutting machine, pirated disk can not be obtained. 因此, 根据本发明的第一到第五个方面的光盘制造装置,制造了保护版权所有者权益的光盘。 Thus, the optical disc manufacturing apparatus of the first to the fifth aspect of the present invention, the manufactured optical disk protection rights of copyright owners. ' '

根据本发明的第六到第八个方面,因为用于制造光盘(光盘具有要通过照射激光束而读出的经记录的数字数据)的光盘制造方法包括:加密步骤,用于根据多个密钥信息对输入的信号加密;光盘基片制造步骤,用于制造光盘基片,以物理结构变化的形式将经加密的数字数据和密钥信息记录在光盘基片上;反射膜形成步骤,用于在光盘基片上形成反射膜;以及密钥信息记录步骤,用于在具有反射膜的光盘基片上记录密钥信息;所以得到呈现下述效果的光盘制造方法。 According to the sixth to eighth aspect of the present invention, because for manufacturing an optical disc (an optical disc having a recording to be read out by the laser beam irradiation of digital data) of an optical disc manufacturing method comprising: encrypting step, encrypted according to a plurality of key information for encrypting an input signal; an optical disc substrate manufacturing step of manufacturing a disc substrate, in the form of a physical change to the structure of the encrypted digital data and the key information recorded on the optical disc substrate; a reflective film forming step for formed in the reflective film on the disk substrate; and a key information recording step for recording the key information on the optical disc substrate having a reflective film; thus obtained optical disc manufacturing method exhibits the following effects. 详细地说,根据本发明的第六到第八个方面,不仅通过物理传送不能对用本发明的光盘制造方法制造的光盘进行再现,而且利用下述方法不能得到盗版光盘,在所述的方法中,将本发明光盘制造方法所制造的光盘上再现出来的再现信号直接提供给切割机。 In detail, according to the sixth to eighth aspect of the present invention, not only by the physical transfer of the optical disk produced by the optical disc manufacturing method according to the present invention is reproduced, and can not be obtained by the following method of pirated optical discs in said method in the reproduction signal reproduced from the optical disc manufacturing method according to the present invention, an optical disc manufactured directly to the cutting machine. 根据本发明第六到第八个方面的光盘制造方法,制造了保护版权所有者权益的光盘。 The optical disc manufacturing method of the sixth to eighth aspect of the present invention, for producing a disc protection rights of copyright owners.

根据本发明的第九个方面,因为光盘具有以物理结构变化形式记录的数字数据,并且通过其反射膜反射入射激光束,来再现数字数据,其中,数字信号根据多个密钥信息加密,将多个密钥信息中的一个以物理结构变化的形式记录在光盘上,而且至少将多个密钥信息中的一个以反射膜的反射率变化形式记录在光盘上,因而得到呈现下述效果的光盘。 According to a ninth aspect of the present invention, an optical disc having digital data as variations in the physical structure of the recording, and the reflection film through which the incident laser beam to reproduce digital data, wherein the digital information signal is encrypted according to a plurality of keys, the one of a plurality of the key information recorded in the form of a physical change in the structure of the optical disc, and at least one of the plurality of the key information recorded on the optical disc variation in reflectance of the reflective film, thereby obtaining the following effects of the present CD. 详细地说,根据本发明的第九个方面,因为根据多个密钥信息对记录在光盘上的数字数据加密,将多个密钥信息中的一个以物理结构变化的形式记录在光盘上,而且至少将多个密钥信息中的一个以反射膜的反射率变化形式记录在光盘上,所以不仅通过物理传送不能复制本发明第九方面的光盘,而且利用下述方法不能得到盗版光盘,在所述的方法中,将从本发明光盘再现出来的再现信号直接提供给切割机。 In detail, according to a ninth aspect of the present invention, since the encrypted digital data recorded on the optical disc, a plurality of the key information is recorded on the optical disk in accordance with a plurality of key information in the form of changes in the physical structure, and at least one of the plurality of the key information recorded in the form of reflectance change of the reflection film on the optical disc, not only the optical disk of the ninth aspect of the present invention can not be copied by a physical transfer, and can not be obtained by the following method of pirated optical discs in the method of the reproduction signal of the optical disc, is reproduced from the present invention directly to the cutting machine. 因此,根据本 Thus, according to the present

发明第九个方面的光盘制造方法,可以制造保护版权所有者权益的光盘。 Optical disc manufacturing method of the ninth aspect of the invention, can protect the rights of copyright owners for producing the optical disc.

根据本发明的第十个方面,因为本发明提供了一种光盘再现方法,该方法从光盘(光盘以物理结构变化形式记录数字数据,以便通过激光束照射其反射膜而读出数据)中再现数据,其中,数字信号根据多个密钥信息加密,将多个密钥信息中的一个以物理结构变化的形式记录在光盘上,而且至少将多个密钥信息中的一个以反射膜的反射率变化形式记录在光盘上,所以得到呈现下述效果的光盘再现方法。 According to a tenth aspect of the present invention, since the present invention provides an optical disk reproducing method (optical disk recording digital data in the form of changes in the physical structure, so that data is read by irradiating a laser beam whose reflection film) reproduced from the optical disc data, wherein the digital signal according to a plurality of encryption key information, a plurality of the key information is recorded in the form of a physical change in the structure of the optical disc, and at least a plurality of the key information is reflected to the reflective film variation rate recorded on the disk, the optical disk so obtained exhibits the following effects reproducing method. 详细地说,根据本发明的第十个方面,可以得到用于对记录在光盘上的数据正确解密和再现的光盘再现方法,即使光盘通过加密受盗版保护。 In detail, according to the tenth aspect of the present invention, can be used to record data on the optical disc correctly decrypting and reproducing an optical disk reproducing method, even if the disc piracy protection by encryption. (2-l)另一实施例中的结构 The structure of the (2-l) a further embodiment

图6是根据本发明一实施例的光盘装置的方框图。 FIG 6 is a block diagram of an embodiment of an optical disk apparatus according to the present invention. 光盘装置1在CD光盘2上记录光盘鉴别代码ED,在CD光盘制造过程中,已经以凹坑串的形式,在CD光盘上记录了数字音频信号。 The optical disk apparatus recording on the optical disc identification code ED 2 CD-ROM, CD-ROM in the manufacturing process, has been in the form of pit string, the CD recorded on the digital audio signal.

详细地说,如图7所示,用诸如聚碳酸酯等塑料,通过压模注模,用与制造普通的CD光盘相同的方法制造CD光盘2的光盘基片3(示于图7D)。 More specifically, as shown in Figure 7, a plastic such as polycarbonate, the stamper by injection molding, and a method of producing the same conventional CD-ROM disc for manufacturing an optical disc substrate 2 CD 3 (shown in FIG. 7D). 在注模过程中,在光盘基片3的信息记录面上,形成对应于凹坑和岛(LAND)的凹-凸精细结构。 In the injection molding process, the information recording surface of the optical disc substrate 3 is formed corresponding to the pits and islands (the LAND) concave - convex fine structure. 如带有箭头a的放大视图(图7E)所示,通过例如蒸发沉积等方法, 在CD光盘2之光盘基片3的信息记录面上,形成用于反射激光束的反射记录膜4,然后形成用于保护反射记录膜4的保护膜5,以防止腐蚀。 The enlarged view with arrow a (FIG. 7E), by methods such as evaporation deposition or the like, on the information recording surface of the CD-ROM disc substrate 2 is 3, 4 form a reflective recording film for reflecting the laser beam, and 5 a protective film for protecting the reflection recording film 4, to prevent corrosion.

用普通CD光盘所用的相同方法,在CD光盘2上,以重复的凹坑和岛的形式,记录用于指定音频信号再现位置的子代码信息绝对时间,并且使激光束L通过光盘基片3照射到反射记录膜4上,并且接收反射光束,从而再现了记录在CD光盘2上的音频信号等。 Normal CD-ROM by the same method as used in the CD-ROM 2, in the form of repeated pits and islands, the absolute time recording subcode information for specifying the reproduction position of the audio signal, and the laser beam L by the optical disk substrate 3 irradiated onto the reflection recording film 4, and receives the reflected light beam, thereby reproducing audio signals recorded on the optical disc 2 is a CD.

用普通CD光盘所用的相同方法,为如上形成的每秒重复的凹坑和岛分配75CD帧(图7A),并且为每一CD帧(图7B)分配98EFM帧(图7B)。 Normal CD-ROM by the same method used, and repeated every second pit thus formed island 75CD distribution frame (FIG. 7A), and for each CD frame (FIG. 7B) assigned 98EFM frame (Fig. 7B). 此外,将每一EFM帧分成588信道时钟,为第一22信道时钟分配一帧同步。 Further, each EFM frame is divided into 588 channel clocks, the first channel 22 a sync clock distribution. 由凹坑和岛结构构成的基本周期是1信道时钟1周期。 Basic cycle consisting of the pit structure and the island 1 is 1 channel clock cycle. 凹坑和岛结构以该基本周期的整数倍长度进行重复,帧同步由IIT的周期组成。 Pits and island structure is repeated substantially an integer multiple of the length of the cycle, the frame synchronization of the IIT periods.

在该实施例中,形成反射膜4,以便获得与CD-R的信息记录面相同的膜结构。 In this embodiment, the reflective film 4 is formed, in order to obtain the information recording surface of the CD-R same film structure. 因此,当把强度大于某一强度的激光束L照射到CD光盘2上时,在激光束照射的位置上,反射记录膜4的反射率被不可逆地改变,而用反射光束的强度变化的形式,可以检测反射率的变化。 Thus, when the intensity is greater than the laser certain intensity beam L is irradiated to the upper 2, at the position of the laser beam is irradiated on the reflectivity of the recording film 4 is irreversibly changing the CD-ROM, and a change in intensity of the reflected beam in the form of , change in reflectance can be detected.

在光盘装置1中(图6),包括微机的系统控制电路IO控制整个操作,并且在CD光盘人上记录光盘鉴别代码ED。 In the optical disk apparatus 1 (FIG. 6), the system control circuit including a microcomputer controls the entire operation of IO, and the recording on the optical disk authentication code ED human CD-ROM.

在光盘装置l中,在伺服电路12的控制下,主轴马达11使CD光盘2以恒定的线速度旋转。 L in the optical disc device, under control of the servo circuit 12, the spindle motor 11 so that the CD disc 2 is rotated at a constant linear velocity.

光学拾音器13A先于光学拾音器13B检测来自CD光盘2的再现信号RF, The optical pickup in the optical pickup 13A to 13B disc detected from the reproduction signal RF 2 CD's,

21然后光学拾音器13B根据光学拾音器13A检测到的再现信号RF的处理结果, 在CD光盘2上记录光盘鉴别代码ED。 21 then process the results of the reproduced signal RF detected by the optical pickup 13B according to the optical pickup 13A, recorded on the optical disc identification code ED in the CD 2.

详细地说,光学拾音器13A和13B通过一刻螺纹装置联结,沿CD光盘2 的径向运动,因而在相同的轨迹上邻近地照射激光束。 In detail, the optical pickup 13A and 13B by screw means coupled minute, radial motion along the CD 2, thereby irradiating a laser beam adjacent on the same track. 根据在CD光盘2上照射激光束而得到的反射光束的接收结果,光学拾音器13A和13B处于独立的跟踪控制和聚焦控制之下,因此,正好在光学拾音器13A扫描之后,光学拾音器13B扫描相同的位置。 The reception result of the reflected light beam in the laser beam is irradiated on the optical disk 2 CD obtained, the optical pickup 13A and 13B are under separate tracking control and focus control, and therefore, just after scanning the optical pickup 13A, 13B of the optical pickup scans the same position.

光学拾音器13A在预定元件中接收反射光束,并且检测再现信号RF,所 The optical pickup receives reflected light beam 13A in a predetermined element, and detects a reproduction signal RF, the

述再现信号的信号电平对应于接收元件之接收面上的反射光束的光束强度变化而变化。 The signal level of the reproduction signal corresponding to said beam intensity variation of the reflected light beam received by the receiving surface of the element varies. 在APC(自动功率控制)电路14的控制下,光学拾音器13B在预定的定时下升高激光束的光束强度,从而局部地改变CD光盘2的反射记录膜4 的反射率。 Under the control of APC (Automatic Power Control) circuit 14, the optical pickup 13B increased beam intensity of the laser beam at a predetermined timing, thereby locally changing the reflectivity of the CD reflection recording film 4 2.

放大电路15以预定的增益放大由光学拾音器13A提供的再现信号RF,并且将其输出。 Amplifying circuit 15 amplifies the predetermined reproduced signal RF gain provided by the optical pickup 13A, and outputs it. 二进制化电路16根据预定的参考电平使由放大电路15提供的再现信号RF 二进制化,并且输出二进制信号BD。 Binarizing circuit 16 so that a reproduced signal RF amplifying circuit 15 provided in accordance with a predetermined reference level binarized, and outputs a binary signal BD. PLL电路从二进制信号BD中再现信道时钟CK。 PLL circuit reproduces a channel clock CK from the binary signal BD.

延迟电路22使二进制信号BD的定时延迟一段时间,并且输出经延迟的定时,所述时间段是从光学拾音器13A扫描一个位置的时间到光学拾音器13B 扫描同一个位置的时间。 A delay circuit so that the timing of the binary signal BD is delayed by a time 22, and the delayed output timing, the time period is from a time of the scanning position of the optical pickup of the optical pickup 13A to a position 13B of the same scan time.

光盘鉴别代码发生电路20包括子码检测电路20A和只读存储器(ROM)20B。 The optical disc discrimination code generation circuit 20 includes a sub-code detecting circuit 20A and read only memory (ROM) 20B. 子码检测电路20A处理由延迟电路22延迟了预定时间的二进制信号DBD,从而再现包含在二进制信号DBD中的子码信息。 Sub-code detecting circuit 20A is processed by the delay circuit 22 delays the binary signal DBD predetermined time, thereby reproducing the subcode information comprising a binary signal of the DBD. 此外,光盘鉴别代码发生电路20有选择地产生分(AMIN)和秒(ASEC)的时间信息,这些时间信息分别由来自包含在子代码中的分、秒和帧的绝对时间表示。 Further, the optical disc discrimination code generation circuit 20 selectively generates minutes (AMIN) and second (ASEC) time information, the time information contained in each fraction from the sub-code, and the second absolute time is represented by frame. 那时,子码检测电路20A还产生同步于秒(ASEC)时间信息的复位脉冲,并且将它输出到转换电路21。 Then, the sub-code detecting circuit 20A also generates a reset pulse synchronized with the second (ASEC) time information, and outputs it to the conversion circuit 21.

在这里,表示CD光盘上数据位置的分(AMIN)和秒(ASEC)的时间信息是作为CD光盘2的标准规定的子代码信息。 Here, the CD-ROM data points represents the position (AMIN) and second (ASEC) time information is the sub-code information specified in the standard optical disk 2 as the CD. 换句话说,分(AMIN)时间信息表示按分钟记录在CD光盘2上的数据,并且取值为,例如,从0到74。 In other words, minute (AMIN) time information represented by the data recorded on the CD-ROM min 2, and a value of, e.g., from 0-74. 秒(ASEC)时间信息将按分钟(AMIN)规定的以分为单位的位置按秒进行更精确的规定,并且取值为,例如,从0到59。 A predetermined second (ASEC) time information will be minute (AMIN) unit into the position predetermined by the more precise second, and the value of, e.g., from 0 to 59.

只读存储器20B保存光盘鉴别代码ED,并且产生数据,该数据是根据来自子码检测电路20A的分(AMIN)和秒(ASEC)时间信息而保存的。 Disc read-only memory 20B stored authentication code ED, and generates data which is a fraction (AMIN) from the sub-code detecting circuit 20A and a second (ASEC) time information stored. 在这里,光盘鉴别代码ED包含在每个光盘中固定地设置的ID信息,制造工厂的信息、制造的数据、以及用于控制允许再现的信息,并且还进一步包含用于指示光盘鉴别代码ED起动的同步信号和误差校正代码。 Here, the disc ID information comprises identification code ED is fixedly disposed in each optical disk manufacturing factory information, manufacturer, and for controlling the reproduction permission information, and further comprising means for indicating disc start authentication code ED the synchronization signal and error correction code. 只读存储器20B保存光盘鉴别代码ED作为位数据,将】位光盘鉴别代码ED输出到由分(AMIN)和秒(ASEC) 时间信息决定的"1"地址。 Disc read-only memory 20B authentication code ED as stored bit data, the output bit disc identification code ED] of the fraction (AMIN) and second (ASEC) "1" of the address information determination time. 因此,对于每一秒,只读存储器20B产生1位光盘鉴别代码ED。 Thus, for each second, read-only memory 20B generates a disc authentication code ED.

为了如上所述产生光盘鉴别代码ED并将其输出,在CD光盘2中,如图7和图8之间的比较所示,1秒包括75 CD帧,l CD帧包括98EFM帧(图8(Al) 至U(A-3)),光盘鉴别代码发生电路20产生1位光盘鉴别代码ED(图8D),其单位为7350(735(^75X98)EFM帧,并且将其输出。因而,光盘鉴别代码发生电路20产生和输出光盘鉴别代码ED,以致在CD光盘上至少有10个凹坑边缘对应于光盘鉴别代码ED的1位。 To produce an optical disk and outputs authentication code ED As described above, in the CD-ROM 2, as shown in the comparison between FIGS. 7 and 8, one second frame including CD 75, CD L 98EFM frame comprising a frame (FIG. 8 ( al) to U (A-3)), an optical disk authentication code generating circuit 20 generates a disc authentication code ED (FIG. 8D), in units of 7350 (735 (^ 75X98) EFM frames, and outputs it. thus, the optical disc authentication code generating circuit 20 generates and outputs an optical disk authentication code ED, 10 such that at least one edge of the pit corresponding to the optical disc identification code ED on a CD-ROM.

转换电路21参考同步图形对光盘鉴别代码ED加扰,并且将其输出。 Synchronization pattern conversion circuit 21 with reference to the optical disc identification code ED is scrambled, and outputs it. 因此很难找到光盘鉴别代码ED。 It is difficult to locate the disc discrimination code ED.

换句话说,在转换电路21中,同步图形检测电路21A检测同步图形,该同步图形重复地出现在由延迟电路22提供的二进制信号DBD中。 In other words, in the conversion circuit 21, sync pattern detecting circuit 21A detects the sync pattern, the sync pattern appears repeatedly in the binary signal DBD provided by the delay circuit 22. 在那时,二进制信号DBD的信号电平对应于形成在CD光盘上的凹坑串作切换,在分配给每帧起始的帧同步上,信号电平升高一段时间HT,然后信号电平下降一段时间IIT。 At that time, the signal level of the binary signal corresponding to the pit string DBD for switching on the CD-ROM is formed, at the start of each frame allocated to the frame synchronization, the signal level of the HT increased period of time, then the signal level a period of decline IIT.

因此,参考信道时钟CK(图8B),通过多连接触发电路的应用,同步图形检测电路21A决定接连而来的二进制信号DBD的信号电平,从而检测帧同步。 Thus, with reference to the channel clock CK (FIG. 8B), applications, sync pattern detecting circuit is connected via a multi-trigger circuit 21A successively determines the signal level of the binary signal from the DBD, thereby detecting frame synchronization. 在本实施例中,同步图形检测电路21A产生帧脉冲FP(图8C),它的信号电平在时间周期T期间上升,根据帧同步的检测结果,与要由子码检测电路20A处理的二进制信号DBD的定时作了比较,所述时间周期T是在帧同步起始前的1 信道时钟。 In the present embodiment, sync pattern detecting circuit 21A generates a frame pulse FP (FIG. 8C), its signal level rises during the time period T, the detection result of frame synchronization, and a binary to a sub-code detecting circuit 20A processes signals DBD timing are compared, the time period T of 1 channel clock frame sync before starting. M-系列发生电路21B包括多个级联的触发器和异或电路,它根据来自子码检测电路20A的复位脉冲,按对应于秒(ASEC)时间变化的定时,对多个触发器中的每一个设置初始值,然后用帧脉冲将设置内容接连地同步地传送,并且将其反馈回预定的中间级,因此产生了M-系列随机数数据MS,其中,逻辑电平1和0以相同的概率出现。 M- series generating circuit 21B comprises a plurality of cascaded flip-flops and an exclusive OR circuit for the reset pulse from the sub-code detecting circuit 20A, to press the corresponding second (ASEC) time variation timing of the plurality of flip-flops each set an initial value, and then set the frame pulse successively transmit the content in synchronization, and it is fed back to a predetermined intermediate stage, thus creating the MS M- series random number data, wherein a logic level 1 and 0 at the same the probability of occurrence.

异或电路21C接收M-系列信号MS和光盘鉴别代码ED,并且产生异或信号,该信号将用作为转换信号MD(图8E)。 Exclusive OR circuit 21C receives M- series signal MS and the disc authentication code ED, and generates an exclusive OR signal which will be used as the switching signal MD (FIG. 8E). 详细地说,在光盘鉴别代码ED的逻辑是0的情况下,异或电路21C根据M-系列信号MS的逻辑电平产生转换信号MD。 In detail, in the optical disk identification code ED is logic in the case of 0, the exclusive OR circuit 21C generates switching signal MD according to the logic level of the M- series signal MS. 另一方面,在光盘鉴别代码ED的逻辑电平是1的情况下,异或电路21C产生具有与M-系列信号MS的逻辑电平相反的转换信号MD。 On the other hand, the logic level of the disc identification code ED is 1, the exclusive OR circuit 21C generates a logic level signal MS having opposite M- series switching signal MD. 因此,异或电路21C根据M-系列随机数对光盘鉴别代码ED进行调制。 Accordingly, the exclusive OR circuit 21C M- series random number authentication code ED modulated optical disk according to.

根据由延迟电路22提供的二进制信号DBD,边缘检测电路23检测在CD 光盘2上形成的每一凹坑边缘的定时,并且将其输出。 The DBD binary signal supplied from the delay circuit 22, an edge detecting circuit 23 detects the timing of each edge of the pit formed on the CD-ROM 2, and outputs it. 调制电路24在该边缘的定时上选通转换信号MD,从而使用于APC电路14的控制信号MX升高。 Modulation circuit 24 at the timing of the edge of the gate switching signal MD, thereby using a control signal MX APC circuit 14 rises. 激光束的光束强度因此而升高一个量,所以局部地改变CD光盘2的反射率。 Thus the beam intensity of the laser beam is raised by an amount, thus locally changing the reflectivity of the optical disc 2 is CD.

详细地说,如图9所示,通过使用级联触发器22A到220的预定级,延迟电路22信道时钟CK同步地连续传送二进制信号BD,因此延迟了二进制信号BD,并且将经延迟的信号输出。 In detail, as shown in FIG. 9, by using cascaded flip-flops of a predetermined stages 22A to 220, the delay circuit 22 continuously transmits the channel clock CK in synchronization with the BD binary signal, the binary signal thus delaying the BD, and the delayed signal output. 设置触发器22A到220的级数,致使因传送二进制信号而给予二进制信号BD的延迟时间变成等于从光学拾音器13A扫描一个位置的时间到光学拾音器13B扫描同一个位置的时间之间的时间周期。 22A to set the flip-flop stages 220, resulting in a binary signal by transmitting a binary signal BD to give a delay time becomes equal to the time period between the time the same position from a position of the scanning time of the optical pickup of the optical pickup 13A to 13B scanning .

边缘检测电路23将触发器220的输入信号提供给根据信道时钟而工作的触发器22A,并且将触发器23A的输入/输出提供到"与"电路23B。 Edge detection circuit 23 trigger input signal 220 is supplied to the flip-flop 22A operates in accordance with the channel clock, and the flip-flop 23A is input / output to "and" circuit 23B. "与"电路23B的一个输入端设置成反向输入端,以致当两个输入端的逻辑电平彼此不相同时,使输出端的逻辑电平升高。 "And" an input of the circuit 23B is provided to the inverting input, such that when the logic levels of the two input terminals are not identical to each other, and the logic level of the output terminal rises. 当二进制信号BD的逻辑电平转换时,边缘检测电路23检测定时,并且输出"与"电路23B的输出信号,该输出信号是作为边缘检测信号EP(图8F)的检测结果。 When the logic level of the binary signal BD converted, the edge detection circuit 23 detects a timing, and outputs a "and" an output signal of the circuit 23B, the output signal is a detection result as edge detection signal EP (FIG. 8F) is.

调制电路24将边缘检测信号EP和转换信号MD提供给"与"电路24A, 由此根据边缘检测信号EP选通转换信号MD,并且产生转换信号MXA(图8G), 转换信号MXA的逻辑电平在对应于转换信号MD之逻辑电平的西坑边缘定时 Modulation circuit 24 and the edge detection signal EP is supplied to the switching signal MD "and" circuit 24A, whereby the gate switching signal MD in accordance with the edge detection signal EP, and generates a switching signal MXA (FIG. 8G), the logic level of the switching signal MXA Xikeng a timing corresponding to the edge transition logic level of the signal MD

24上升高。 24 high-rise.

根据信道时钟CK工作的D-触发器24B从调制信号MXA中除去gridge噪声,并且输出除去噪声的信号MXA ,单稳多谐振荡器(MM)24C对D-触发器24B 输出的脉冲信号的脉冲宽度整形,并且输出调制脉冲MX(图8H)。 The operating channel clock CK D- flip-flop 24B is removed from the modulation signal MXA gridge noise, and outputs the signal to remove noise MXA, of the pulse signals monostable multivibrator (MM) 24C 24B of flip-flop output D- width shaping, and outputs the modulated pulse MX (FIG. 8H).

APC电路14 (图6)相应于光束强度调制脉冲MX,将光学拾音器13B发射的激光束强度从再现用的光束强度切换与记录用的光束强度。 The APC circuit 14 (FIG. 6) corresponding to the beam intensity modulation pulse MX, the optical pickup 13B laser beam intensity emitted from the reproducing beam intensity is switched with the recording beam intensity. 这里,记录用的光束强度是指足以改变CD光盘2之反射膜的反射率的光束强度。 Here, recording beam intensity used that is sufficient to change the beam intensity reflectivity of the reflective film 2 of the CD-ROM.

结果,在光学拾音器13B发射的激光束扫描凹坑P的边缘的定时时间,对应于根据随机数数据MS调制的光盘鉴别代码ED,光盘装置1升高激光束的光束强度,形成标记M以便横跨复盖相应的边缘以附加地记录光盘鉴别代码ED(图81-1和81-2)。 As a result, the timing of the edge of the laser beam scanning time pits P in the optical pickup emitted 13B, corresponds to the random number data MS authentication code ED modulated optical disk, the beam intensity of the laser beam increases the optical disk apparatus 1, for forming a cross mark M cross covering respective edges to additionally recording the optical disk authentication code ED (FIG. 81-1 and 81-2). 因此,在CD光盘2中,在没有附加地记录光盘鉴别代码ED的情况下,得到信号波形的再现信号RF,在所述信号波形中,在扫描这些凹坑边缘的定时时间,信号电平近似地与平均电平相遇(图8J-1)。 Thus, in the CD-ROM 2, without additionally recorded disc identification code ED, the signal is reproduced RF signal waveform in the signal waveform, the scan time at the timing of the edge of the pit, the signal level is approximately encounter with the average level (FIG. 8J-1). 另一方面, 在如上所述的附加地记录光盘鉴别代码ED的情况下,得到信号波形的再现信号RF,在所述信号波形中,在扫描凹坑边缘的定时时间,由于在相应的边缘处反射率局部地变化,所以对于反射率的变化,信号电平局部地偏离。 On the other hand, the case where the optical disc identification code ED is recorded in the appended as described above to obtain a reproduced signal RF signal waveform, the signal waveform, the scan time at the timing edge of the pit, since the respective edges change in the reflectance locally, so the change in the reflectance, the signal level of the local offset. 相应地, 反射率的变化使抖动增加(图8J-2)。 Accordingly, the change in reflectance causes the jitter increases (FIG. 8J-2). 根据从再现信号RF检测到的抖动,CD光盘2上记录光盘鉴别代码ED,并且参考再现信号RF的信号电平变化,再现光盘鉴别代码ED。 The detected from the reproduced signal RF to jitter, CD disc recording disc identification code ED is 2, and the reference signal reproduction RF signal level changes, the optical disc discrimination code ED is reproduced.

在光盘装置l中,设置由APC电路14提高的激光束的光束强度,以及设置调制脉冲MX的脉冲宽度,该脉宽控制激光束之被升高光束强度的时间周期, 以便用与产生音频信号的传统再现方法同样的可靠性处理再现信号RF,即使再现信号RF的信号波形如上所述地变化。 L in the optical disc apparatus, set by the APC circuit 14 to improve the beam intensity of the laser beam, and a pulse width modulated pulses provided MX, which controls the pulse width of the laser beam is increased the beam intensity of the time period, and to generate an audio signal with the conventional method of reproducing process of reproducing the same reliability signal RF, even if the signal waveform of the reproduction signal RF changes described above. 换言之,用足够的相位和幅度的裕度对再现信号RF进行二进制鉴别,因而正确地产生信道时钟CK。 In other words, a binary identification of the reproduced signal RF with a sufficient margin of phase and amplitude, thereby accurately generate the channel clock CK.

图10是用于再现CD光盘2的CD光盘播放机的方框图。 FIG 10 is a block diagram showing a CD-ROM disc CD player 2 is reproducing. 在CD光盘播放机30中,在伺服电路33的控制下,主轴马达32使CD光盘2以恒定的线速度旋转。 In a CD player 30, under control of the servo circuit 33, the spindle motor 32 so that the CD disc 2 is rotated at a constant linear velocity.

光学拾音器34将激光束照射到CD光盘2上,并且在预定的接收元件上接收反射光束,然后产生再现信号RF,其中再现信号的信号电平对应于在接收元件上的接收区上的反射光束的光束强度而变化。 The optical pickup 34 irradiates a laser beam to the CD 2, and receives the reflected light beam on the predetermined receiving element, and then generates a reproduction signal RF, wherein the reproduction signal level of a signal corresponding to the reflected light beam on the receiving area on the receiving element the beam intensity varies. 再现信号RF的信号电平对应于记录在CD光盘2上的每一凹坑而变化。 The signal level of the reproduction signal RF corresponding to the record in each of the pits on the optical disc 2 CD change. 在那时,根据记录的光盘鉴别代码ED, CD光盘2的反射率对应于每一凹坑边缘而局部地变化,并且对应于由于光盘鉴别代码ED的反射率变化,再现信号RF的信号电平因此而微微地改变。 At that time, according to the disc identification code ED is recorded, CD reflectance of the optical disc 2 corresponding to each edge of the pit is locally changed, and corresponds to the signal level of the RF signal due to the change in reflectance of the optical disk authentication code ED reproduced thus slightly changed.

二进制化电路35参考预定的参考电平,使再现信号RF成为二进制,由此产生二进制信号BD。 Binarizing circuit 35 with reference to a predetermined reference level, the playback RF signal becomes a binary, thereby generates a binary signal BD.

PLL电路参考二进制信号BD而工作,因此再现再现信号RF的信道时钟CCK。 A binary signal BD with reference to the PLL circuit operates, and therefore the channel clock reproducing signal RF CCK.

EFM解调电路37参考信道时钟CCK,接连地锁存二进制信号BD,从而再现对应于EFM解调信号S2的数据。 EFM demodulating circuit 37 with reference to the channel clock CCK, the binary signal latched successively BD, thereby reproducing the demodulated data corresponding to the EFM signal S2. 此外,EFM解调电路37对再现数据进行EFM解调,然后参考帧同步将经解调数据分成8-位段,并且对每一所产生的8-位信号去交错,并且将它输出到ECC(误差校正代码)电路38。 Further, the EFM demodulating circuit 37 EFM demodulates the reproduced data and the reference frame sync segment into the demodulated 8-bit data, and each of the 8-bit signal generated by deinterleaving, and outputs it to the ECC (error correction code) circuit 38.

根据加到EFM解调电路37的输出数据中的误差校正代码,ECC电路38 使输出数据经过校正处理,因此再现和输出音频数据D1。 The output data of the EFM demodulating circuit 37 is added to the error correction code, the ECC circuit 38 through the output data correction processing, thus reproducing and outputting the audio data D1.

数/模转换电路(D/A)39使来自ECC电路的音频数据D1经过数/模转换处理,并且输出模拟音频信号S4。 Digital / analog conversion circuit (D / A) 39 so that the audio data from the ECC circuit D1 via the digital / analog conversion processing, and outputs the analog audio signal S4. 此时,在系统控制电路40的控制下,当检测到CD光盘2是非法复制的CD光盘时,数/模转换电路39停止音频信号S4的输出。 At this time, the system control circuit 40, when detecting the optical disc 2 is a CD illegally duplicated CD-ROM, digital / analog conversion circuit 39 stops outputting the audio signal S4.

系统控制电路40包括用于控制CD光盘播放机30工作的计算机。 The system 30 includes a control circuit 40 for controlling operation of the CD player of the computer. 根据来自光盘鉴别代码再现电路41的光盘鉴别代码ED,系统控制电路40确定CD 光盘2是否为非法复制光盘。 The optical disc reproducing from the optical disk authentication code authentication code ED circuit 41, the system control circuit 40 determines whether the CD-ROM 2 is an illegal copy disc. 如果确定CD光盘是否非法复制的光盘,则系统控制电路40控制数/模转换电路39使之停止音频信号S4的输出。 If the disc is a CD if the illegal copy of the determination, the system control circuit 40 controls the number of D / A converter circuit 39 so as to stop outputting the audio signal S4.

光盘鉴别代码再现电路41从再现信号RF对光盘鉴别代码ED解码,并且将其输出。 Disc discrimination code reproducing circuit 41 from the reproduced signal RF on the disc identification code ED is decoded, and outputs it.

图11是光盘鉴别代码再现电路41的详细的方框图。 FIG 11 is a detailed block diagram of the optical disk discrimination circuit 41 codes reproduced. 在光盘鉴别代码再现电路41中,子代码检测电路42参考信道时钟监视二进制信号BD,并且从二进制信号BD中对子代码信息解码。 In the optical disk discrimination code reproducing circuit 41, the sub code detecting circuit 42 monitors the reference channel clock binary signal BD, and decodes the information from the binary signal BD in the code pair. 子代码检测电路42监视包括在经解码子代码中的时间信息,并且产生1秒检测脉冲SECP,每当时间信息改变l秒,该 Subcode detection circuit 42 monitors the time information included in the decoded sub-code, and generates a one second detection pulse SECP, each time the time information is changed l seconds, the

26检测脉冲的信号电平上升。 The signal level of the detection pulse 26 rises.

参考图9,边缘检测电路44的结构和上述的边缘检测电路23的结构相似, 它从二进制信号BD中检测每一凹坑的变化点,并且产生边缘检测信号EP。 Referring to FIG 9, the structure of the edge detection circuit and said edge detection circuit 44 is similar to structure 23, which detects a change point of each pit from the binary signal BD, and generates edge detection signal EP.

同步图形检测电路45参考信道时钟CCK接连地将二进制信号BD锁存, 并且鉴别连续的逻辑电平,因此检测同步电平和产生帧脉冲FP。 Sync pattern detecting circuit 45 with reference to the channel clock CCK latches the binary signal BD successively, and the identification of contiguous logical level, the sync level detector generates a frame pulse FP.

M-系列发生电路46参考1秒检测脉冲SECP对只读存储器地址初始化, 然后根据帧脉冲FP,通过一个一个地址访问机内的只读存储器,因此产生M-系列随机数数据MZ,它相当于由光盘装置1产生的M-系列随机数数据MS。 46 Reference 1 second detection pulse generating circuit SECP M- series of initialization of read-only memory address, then in accordance with the FP frame pulse, a read-only memory via an address within the access mechanism, thus creating the MZ M- series random number data, which is equivalent to M- series random number data generated by the optical disc apparatus 1 MS.

结果,相当于光盘装置1中的处理,在光盘鉴别代码再现电路41中,产生再现光盘鉴别代码ED所需要的各种参考信号。 As a result, the optical disc 1 is equivalent to the processing apparatus, the optical disc discrimination code reproducing circuit 41, the optical disc reproducing generates various reference signals required authentication code ED.

在光盘鉴别代码再现电路41中,参考信道时钟CCK,再现信号RF在模/ 数转换电路47中经过模/数转换处理,产生8-位数字再现信号。 In the optical disk authentication code reproducing circuit 41, with reference to the channel clock of CCK, reproduced signal RF in analog through analog / digital conversion circuit 47 A / D conversion processing to generate 8-bit digital reproduction signal. 反极性电路(-l)48使数字再现信号的极性反相并且将反极性信号输出。 Reverse polarity circuit (-l) 48 inverts the polarity of the digital playback signal and the reverse polarity signal.

选择器49选择由模/数转换电路47直接提供的数字再现信号,数字再现信号的极性是反相的,然后从反极性电路48提供信号,相当于来自M-系列发生电路46的M-系列随机数数据MZ的逻辑电平。 The selector 49 selects the digital by the A / D converter circuit 47 is directly supplied playback signal, the polarity of the digital reproduction signal is inverted, and then provides the opposite polarity signals from the circuit 48 from circuit 46 corresponds to the sequence generator M M- - series random number data MZ logic level. 详细地说,如果M-系列随机数数据MZ的逻辑电平是1,选择器49选择输出直接提供的数字再现信号。 In detail, if M- series random number data MZ is logic level 1, the selector 49 selects the output of the digital directly reproduced signal. 另一方面,如果M-系列随机数数据MZ的逻辑电平是O,选择器40选择具有反极性的数字再现信号。 On the other hand, if the M- series random number data MZ logic level is O, the selector 40 selects a digital reproduction signal of opposite polarity. 因此选择器49根据多-值数据再现了以M-系列随机数数据MS调制的光盘鉴别代码ED,因而产生多-值数据的再现数据RX。 The multi selector 49 so - identification code ED is reproduced in the optical disc M- series random number data MS modulated value data, thereby generating the multi - value data reproduction data RX.

16-位数字加法器52将再现数据RX和来自累加器(ACU)53的输出数据AX 相加,并且输出总值。 16-bit digital adder 52 and outputs the reproduction data RX data from the accumulator (ACU) 53 by adding the AX, and outputs the total. 累加器53包括16-位存储器,用于保存加法器52的输出数据,以及包括与加法器52—起的累加加法器,因为使保存的数据反馈回加法器52。 The accumulator 53 comprises a 16-bit memory for storing the output data of the adder 52, and comprises from adder 52- accumulated jerk adder, so as to save the data fed back to the adder 52. 详细地,累加器53用1秒检测脉冲SECP清除保存的数据,然后与来自边缘检测电路44的输出信号EP同步地记录来自加法器52的输出数据。 In detail, the accumulator 53 clears stored data SECP 1 second detection pulse, and then records the output data from the adder 52 in synchronization with the output signal from the edge detection circuit EP 44. 因此,加法器52累加对应于凹坑边缘的逻辑值,它是从再现数据RX的逻辑值中选出的,所述再现数据RX是由选择器49在子码信息中设置的时间信息的每一秒(7350帧)时再现的,因而产生累加值AX。 Accordingly, the adder 52 accumulates the logical value corresponding to the edge of the pit, which is selected from the logical value of the reproduction data RX of the reproduction time information of each RX data is provided by the selector 49 in the sub-code information one second reproduced (7350), the accumulated value thereby producing AX.

在定时时间为1秒检测脉冲SECP上升时,根据预定的参考值,二进制化电路54使来自累加器53的输出数据AX变成二进制,并且输出二进制数据。 Rising SECP 1 second detection pulse at the timing of time, according to a predetermined reference value, binarizing circuit 54 from the output data AX of the accumulator 53 into binary, and outputs binary data. 由选择器49再现的光盘鉴别代码ED的再现数据RX因此而转换成二进制光盘鉴别代码ED。 Reproducing the optical disc 49 by the selector identification code ED is thereby reproduced data RX into a binary disc identification code ED.

在ECC电路中,通过加到光盘鉴别代码ED的误差校正代码的使用而使光盘鉴别代码ED经过误差校正处理,以致输出误差校正代码。 In the ECC circuit, by using the authentication code ED is applied to the optical disk error correction code of the identification code ED disc after error correction processing, so that the output of the error correction code.

(2-2)另一实施例的工作情况 The operation of the embodiment (2-2) Another embodiment

通过应用上述组成,在根据本发明的CD光盘2的制造过程中,通过原始的主光盘装置形成母光盘,通过使用由母光盘制造的压模制造光盘基片3。 By applying the above composition, the present invention is in the CD manufacturing process 2, the master disc is formed from the original master disk device, manufactured by using a stamper manufactured by the master disc of the optical disk substrate 3. 此外,在光盘基片3上还附加地形成反射记录膜4和保护膜5,因而制造了CD 光盘2(图7)。 Further, on the optical disk substrate 3 is additionally formed reflective recording film 4 and the protective film 5, thereby producing the CD optical disk 2 (FIG. 7). 使具有分别对应于预定的基本周期T的基本长度的整数倍的凹坑和岛重复,数字视频信号等记录在CD光盘2上。 So that the recording pits and islands have a length substantially corresponding to the predetermined basic cycle T of an integral multiple of repetition, the digital video signals on a CD-ROM 2.

在这里,CD光盘2有一反射记录膜4,它具有和CD-R的信息记录膜相同的膜结构,当使光束强度大于预定值的激光束L照射到CD光盘2上时,在激光束照射的位置上反射记录膜4的反射率不可逆地变化,并且将子数据附加地记录在主数据上,它是以重复的凹坑和岛的形式记录的。 Here, the CD-ROM 2 has a reflection recording film 4, which information has the CD-R recording the same membrane film structure, when the beam intensity is greater than a predetermined value of the laser beam L is irradiated to the CD 2, the irradiation of the laser beam reflectivity of the recording film 4 to irreversibly change the position, and the sub-data additionally recorded in the main data, which is in the form of repeated pits and islands recorded.

在光盘装置1中(图6),将光盘鉴别代码ED记录在如上制造的CD光盘上, 以致光盘鉴别代码ED对以重复的凹坑和岛的形式记录的数字音频信号的再现没有负面的影响。 In the optical disk apparatus 1 (FIG. 6), the disc identification code ED is recorded on the CD-ROM produced as described above, so that the disc identification code ED is no negative effect on reproduction of the digital audio signal in the form of repeated pits and islands recorded .

详细地说,在光盘装置l中,通过二进制化电路16从光学拾音器13A得到的再现信号RF转换成二进制信号BD,通过PLL电路17从二进制信号BD 再现信道时钟CK, 二进制信号BD由延迟电路22延迟,延迟时间根据当光学拾音器13A扫描一个位置的时间和当用于记录光盘鉴别代码ED的光学拾音器13B扫描同一个位置的时间之间的时间差。 In detail, in the optical disk apparatus l, the reproduction signal RF obtained from the optical pickup 13A by a binarizing circuit 16 into a binary signal BD is reproduced channel clock from the binary signal BD by the PLL circuit 17 CK, the binary signal BD by the delay circuit 22 delay, the delay times based on a scanning position of the optical pickup when the optical pickup 13A and 13B scan the optical disk for recording identification code ED same time between when a position difference.

在光盘装置1中,由子码检测电路20A从来自延迟电路22的二进制信号DBD检测子码,根据包含在子码中的分(AMIN)和秒(ASEC)信息,通过访问只读存储器20B,在极低的位速率下与子码同步地产生光盘鉴别代码ED(低至每1秒1位)。 In the optical disc apparatus 1, the sub-code detecting circuit 20A from the binary signal DBD detects the sub-code from the delay circuit 22, according to the contained points subcode (AMIN) and second (ASEC) information, by accessing the ROM 20B, in generating authentication code disc ED (as low as 1 bit per 1 second) with very low bit rate of a subcode synchronization. . .

同时,在同步图形检测电路21A中,从二进制信号DBD检测同步图形,根瑪在M-系列发生电路21B中的同步图形的检测图形,产生M-系列随机数数据MS,其中,在定时同步于同步图形时,逻辑电平1和0以相同的概率出现。 Meanwhile, the sync pattern detecting circuit 21A, the binary signal from the DBD detects the synchronization pattern, the synchronization pattern detection pattern Ma root circuit 21B in place in the series M-, M- produce the MS series random number data, wherein, in synchronization with the timing when the sync pattern, a logic level 0 and 1 appear with equal probability.

还是在光盘装制l中,根据M-系列随机数数据MS,异或电路21C调制光盘鉴别代码ED,因而使光盘鉴别代码ED变得难于寻找。 L or the optical disk system installed in accordance with the MS M- series random number data, the exclusive OR circuit 21C disc identification code ED modulated, thus making disc discrimination code ED becomes difficult to find.

述是在光盘装制1中,当光学拾音器13B经过凹坑的边缘时,边缘检测电路23检测定时,参考定时检测结果,调制电路24接着选通来自异或电路21C 的输出信号,并且对输出信号整形成作为选通结果而得到的脉冲,并且使它具有窄宽度,因而所得到的转换信号MD使从光学拾音器13B间歇地发射的激光束的光束强度提高。 Said system is installed in the optical disc 1, when the optical pickup passes the edge of the pit 13B, the edge detection circuit 23 detects a timing, the reference timing detection result, the modulation circuit 24 then the gate signal output from the exclusive OR circuit 21C, and the output as a whole form a pulse signal obtained as a result of the gate, and it has a narrow width, and thus the switching signal MD obtained from the beam intensity of the laser beam intermittently transmitted optical pickup 13B is improved.

结果,根据控制信号MX,在对应于激光束的光束强度上升的位置上,局部地改变CD光盘2的反射记录膜4的反射率。 As a result, the MX in accordance with the control signal, the beam intensity corresponding to the elevated position of the laser beam, locally changing the reflectivity of the CD reflection recording film 4 2. 此时,在光学拾音器13B扫描凹坑的边缘的时间,选通来自异或电路21C的输出信号,因此使激光束的光束强度上升,而且对应于异或电路21C的输出信号形成标志M,所以复盖横跨每一凹坑的边缘。 In this case, at the time the optical pickup 13B scans the edge of the pit, the gate output signal from the exclusive OR circuit 21C, thus making the beam intensity of the laser beam is increased, and corresponds to the exclusive OR circuit 21C an output signal of flag M is formed, so coverage across the edge of each pit.

在如上所述形成标志M的CD光盘2上,虽然再现信号RF的抖动增加, 但因为如上所述引入的反射率变化极微小,反射率变化对以凹坑串形式记录的再现信息没有负面影响,稳定和正确地产生时钟以及正确地再现记录数据。 2, although the jitter of the reproduced signal RF increased formation of the flag M CD-ROM as described above, but because the reflectance changes introduced extremely small as described above, the change does not adversely affect the reflectivity of the recorded information reproduced in the form of pit string , correctly and stably generate a clock and correctly reproduce the recorded data.

在CD光盘2的情况下,在异或电路21C中,通过其中逻辑电平1和0以相同概率出现的M-系列的应用而干扰光盘鉴别代码ED,因而记录了经干扰的光盘鉴别代码ED,当在示波器上观察再现信号RF的信号波形时,光盘鉴别代码ED的信息作为噪声出现,难于找到光盘鉴别代码ED。 In the case of a CD optical disk 2, the exclusive OR circuit 21C, and by which the logic level 0 M- Series application appears to interfere with the same probability disc identification code ED, thereby recording the interference-disk identification code ED , when viewed in the reproduced signal RF is a signal waveform on an oscilloscope, the information on the disc identification code ED appears as noise, disc identification code ED is difficult to find. 此外,难于再现光盘鉴别代码ED。 Further, the optical disk is difficult to reproduce authentication code ED.

除了上述的之外,由于将1位光盘鉴别代码ED规定为l秒时间周期,艮口, 因为在总的7350(7350-75X98)EFM帧中l位是漫布地记录的,即使再现信号受到噪声干扰,始终如一地记录光盘鉴别代码ED。 In addition to the outside, since the disc identification code ED is a predetermined second time period is l, Burgundy port, because the total 7350 (7350-75X98) EFM frame is a l-bit diffuse distribution of recording, even if a reproduction signal is affected by noise interference, the optical disc recording consistently authentication code ED.

虽然在CD光盘2上以凹坑串的形式记录的数字音频信号D1(如上所述也记录光盘鉴别)是通过传统的非法复制方法再现的,但不能再现光盘鉴别代码ED。 Although the CD-ROM 2 in the form of pit strings recorded digital audio signal D1 (also as described above recordable optical disc discrimination) by the conventional illegal copy reproducing method, an optical disc but can not reproduce authentication code ED. :

要使非法复制的光盘完全和CD光盘一样,就需要以相同的标志形式记录光盘鉴别代码ED,要这样做的话,就必须使用一种光盘记录媒体,它具有反射记录膜,而且先前已在其上记录凹坑串形式的数字音频信号D1。 To complete an optical disk and illegally duplicated CD-ROM as an optical disc needs to record authentication code ED in the form of the same sign, do so, it must use a disc recording medium having a reflection recording film, and which has previously form a recording pit string digital audio signal D1. 此外必须使用一与光盘装置1有相似结构的单元。 Also an optical disc apparatus must have a similar cell structure. 结果,光盘鉴别代码ED变得难于再现。 As a result, the disc identification code ED is made difficult to reproduce.

当将激光束照射到如上制造的CD光盘2(图IO)时,在CD光盘播放机30 中,检测到再现信号RF,它的信号电平随照射到CD光盘2上的激光束的反射光束的光束强度所相应的时间而变化,因此再现信号的信号电平随凹坑和岛结构所相应的时间而变化,也对应于CD光盘2的反射率而变化,从而通过二进制化电路35将再现信号RF二进制化。 When the reflected light beam irradiating a laser beam to the above-produced CD optical disk 2 (FIG. The IO), in the CD player 30, the detected reproduction signal RF, its signal level with the laser beam irradiated on the 2 CD disc the beam intensity of the respective time changes, so the reproduced signal level depending on the pit and the island structure is changed corresponding to the time, also corresponds to the reflectivity of CD-ROM 2 changes, so that the binarizing circuit 35 through the reproducing RF signal binarization. 接着,EFM解调电路37对二进制信号BD进行二进制-鉴别,然后经过解调和交错处理,并且通过ECC电路38进行误差校正处理。 Next, the EFM demodulating circuit 37 binarizes the binary signal BD - identification, then demodulated and interleaved, and error correction processing by the ECC circuit 38. 相应地,再现数字音频信号。 Accordingly, the digital audio signal reproduced.

此时,由于标志的存在,接近每一凹坑边缘的信号电平有微小的改变,因为标志是通过局部地改变CD光盘2上的反射而形成的,在实际足够正确的电平上正确地鉴别二进制信号以产生时钟,根据所产生的时钟进行正确地再现。 At this time, due to the presence of the flag, a signal level close to the edge of each pit is changed slightly, because the CD flag is changed locally by the reflector 2 is formed on, in the actual correct level to sufficiently correct discriminating the binary signal to generate a clock, the clock correctly reproduced according to the generated. 结果,使用普通的CD光盘播放机正确地重播CD光盘2,即使在CD光盘2 上记录光盘鉴别代码ED。 As a result, using ordinary CD-ROM player to properly replay the CD 2, even in a CD recording on the disc identification code ED 2.

当再现数字音频信号如上所述时,光盘鉴别代码再现电路41同时再现来自CD光盘2的光盘鉴别代码ED。 When reproducing the digital audio signal as described above, the optical disc discrimination code reproducing circuit 41 simultaneously reproduced from the optical disk authentication code ED CD disc 2. 如果未能正确地再现光盘鉴别代码ED,则认为该光盘是非法复制光盘,立刻控制数/模转换电路39停止数/模转换处理。 Failure to correctly reproduce the optical disk authentication code ED, the optical disk is considered illegal copy disc is immediately controlled digital / analog conversion circuit 39 stops D / A conversion processing.

详细地说,当再现记录在CD光盘2上的光盘鉴别代码ED(图ll)时,同步图形检测电路45检测帧同步,M-系列发生电路46产生M-系列随机数数据MZ,它对应于用于参考经检测的帧同步一起记录的M-系列随机数数据MS。 In detail, when the optical disc discrimination code ED is recorded on the CD reproducing the optical disc 2 (FIG LL), sync pattern detecting circuit 45 detects frame synchronization, M- series generating circuit 46 generates the MZ M- series random number data, which corresponds to a reference frame synchronization with the detected recording M- series random number data MS.

此外,当激光束穿过凹坑边缘时边缘检测电路44检测定时,当子代码以秒发生时,子代码检测电路42检测定时。 Further, when the laser beam passes through the edge of the pit edge detection circuit 44 detects a timing when the sub-code occurs in seconds, a sub code detecting circuit 42 detects a timing.

模/数转换电路47将再现信号RF转换成数字再现信号,选择器49选择数字再现信号或参考M-系列随机数数据MZ使极性反相的数字信号,因而再现多值数据形式的再现数据RX,它表示光盘鉴别代码ED的逻辑电平。 Data reproducing analog / digital conversion circuit 47 converts the reproduced signal RF into a digital playback signal, the selector 49 selects the digital playback signal or a reference M- series random number data MZ digital signal polarity is inverted, and thus the reproduction of multi-value data in the form of RX, which represents an optical disk authentication code ED is logic level.

当再现CD光盘2时,累加器53和加法器52选择地累加再现数裾RX, 它对应于当子代码一步步进行时按秒计的每一凹坑。 When reproducing the CD 2, the accumulator 53 and the adder 52 accumulates the number of reproduced select the RX garment, which corresponds to a sub-code by one step for every dimple in seconds. 因而由光盘鉴别代码ED Thus the disc identification code ED

30再现结果而得的SN比得到改善。 30 playback results obtained SN ratio is improved. 二进制化电路54使累加结果变成二进制,因此使光盘鉴别代码ED解码,然后光盘鉴别代码ED经过由ECC电路55进行的误差校正处理并且提供给系统控制电路40。 Binarizing circuit 54 so that the accumulation result becomes binary, so that the disc identification code ED is decoded, and an optical disc identification code ED is performed after error correction processing by the ECC circuit 55 and supplied to the system control circuit 40.

当再现光盘鉴别代码ED时,虽然边缘反射率的变化较小,但得到的光盘鉴别代码ED是作为从许多凹坑边缘得到的总信号的。 When reproducing the disc identification code ED, although small changes in the reflectivity of the edge, but the disc identification code ED is obtained as a total signal obtained from a number of edge of the pit. 可以对光盘鉴别代码ED 进行充分和始终如一地解码而在光盘上没有随机噪声的负面效应。 Can be consistently and adequately decode the disc identification code ED without negative effects of random noise on the optical disc. 有效地避免了整个再现信号的电平起伏所造成的负面效应。 Effectively avoid the negative effects of the entire reproduced signal level fluctuations caused by. 当光盘鉴别代码ED根据总的信号进行解码时(因为在记录期间光盘鉴别代码ED受到M-系列的干扰)可以很稳定地再现光盘鉴别代码ED。 When the optical disc discrimination code ED is decoded in accordance the total signal (since the optical disc during recording identification code ED is disturbed M- series) can be stably reproduced identification code ED is an optical disc.

(2-3)又一个实施例的效果 (2-3) the effect of a further embodiment

根据如上所述的组成,使激光束照射到CD光盘上,因此局部地改变CD 光盘的反射率以形成抖动,通过使用抖动记录光盘鉴别代码。 The composition as described above, the laser beam is irradiated onto a CD, thus locally changing the reflectivity of the CD to form the jitter, the jitter by using the disc identification code is recorded. 如此记录光盘鉴别代码致使再现数字音频信号的光学拾音器可对其再现,而不是非法复制,对于以凹坑串形式记录的数字音频信号的再现没有任何负面效应。 Thus the optical disc recording identification code for causing the reproduction digital audio signal reproducing optical pickup may be made thereto, and not an illegal copy, the reproduction for the digital audio signal to form the recording pit string without any negative effect.

因为参考子代码,将光盘鉴别代码的1位规定为1秒,并且规定光盘鉴别代码的1位至少有IO个供记录的凹坑边缘,在再现时,始终如一地再现光盘鉴别代码,没有任何噪声的影响。 Since the reference sub-code, an authentication code of a predetermined optical disc 1 second, and IO has a predetermined pits recorded for at least the edges of the disc identification code, at the time of reproduction, the optical disc discrimination code reproduced consistently without any the effect of noise.

因为用M-系列随机数据调制光盘鉴别代码供记录,所以光盘鉴别代码被记录成不容易在噪声和光盘鉴别代码本身之间进行鉴别。 Because the authentication code modulated optical disc using random data series for M- recording, so the optical disc is recorded as the authentication code is not easy to discriminate between the noise and the disc identification code itself. 因此难于寻找和分析光盘鉴别代码。 It is difficult to find and analyze the disc identification code. 此外,始终如一地再现光盘鉴别代码在再现时没有任何噪声的影响。 Further, the optical disc discrimination code reproduced consistently without any influence of noise at the time of reproduction.

因为检测再现信号的信号电平,以对光盘鉴别代码进行解码,在CD光盘播放机中,对信号电平进行累加以除去混合在光盘鉴别代码中的噪声,可以始终如一地重播记录成不易从噪声中鉴别的光盘鉴别代码。 Since the detection of the reproduction signal level, to decode the disc identification code in the CD player, the signal level is accumulated to remove noise mixed in the disc identification code may be difficult to replay the recorded consistently from noise identified disc identification code.

由于选择器49.通过使用M-系列随机数据MZ选择地处理数字再现信号以产生光盘鉴别代码,可以始终如一地重播记录成不能寻找和分析的光盘鉴别代码。 Since the selector 49. MZ selectively processes the digital data by using a M- series random signal to produce the optical disc reproduction authentication code, recorded as the replay can not consistently find and analyze the disc identification codes. (3)又一个实施例 (3) A further embodiment

虽然在上述实施例中描述将CD-R膜结构应用到反射记录膜的情况,但本发明不仅仅限于这情况;例如,可以应用相位变化型光盘的膜结构,可以将这种数据类型附加地记录在传统CD光盘上,如果可能间歇地照射有足够高的强度的激光束。 Although the description will be applied to the CD-R where the reflective film structure of the recording film, the present invention is not limited to the case in which the above-described embodiments; for example, film structure can be applied to phase change type optical disk, this data type may be additionally recorded in the conventional CD disc, if possible is intermittently irradiated with a laser beam of sufficiently high intensity.

虽然在上述实施例中描述了形成标志以便横盖凹坑边缘,但本发明不仅仅限于这情况;例如,可以在接近边缘处形成这类标志而得到和上述实施例所得到的相同的效果。 Although described in the above embodiments flags formed so as transverse edge of the pit cover, but the present invention is not limited to these cases; e.g., the same effects can be obtained and the above-described embodiment is formed such markers obtained near the edges.

虽然在上述实施例中描述了M-系列按秒复位,但本发明不仅仅限于这情况;例如,可以用每一CD帧使M-系列复位而得到和上述实施例所得到的相同的效果。 Although a series M- reset in seconds, but the present invention is not limited to the case in which the above-described embodiments; for example, each CD may be used to make the frame reset M- series and the same effects as the above embodiments obtained.

虽然在上述实施例中记录了光盘鉴别代码,但本发明不仅仅限于这情况; 例如,可以记录解密所需要的各种数据,如果已记录根据凹坑和岛的长度加密的数字音频信号,如果记录了加密所需要的密钥信息,或如果记录了密钥信息选择或解码所需要的数据。 Although the optical disc discrimination codes recorded in the above embodiment, but the present invention is not limited to these cases; e.g., can record various kinds of data necessary for decrypting, if the length of recorded pits and islands encrypted digital audio signal, if recording the key information necessary for encryption, or if the recorded data or information selection keys required for decoding.

虽然在上述实施例中将光盘鉴别代码记录在CD光盘上,但本发明不仅仅限于这情况;例如,在应用CD光盘播放机中可以记录再现的计数。 Although the optical disk authentication code recorded on a CD in the above-described embodiment, but the present invention is not limited to these cases; e.g., a CD player application record count can be reproduced.

虽然在上述实施例中通过累加器的累加值经过二进制鉴别以再现光盘鉴别代码,但本发明不仅仅限于这情况;例如,可以使累加值经过用于再现的多-值鉴别。 Although in the above embodiment by accumulator embodiment accumulated value identification to reproduce the disc through binary identification code, but the present invention is not limited to this case; For example, the accumulated value for reproduction through a multi - value of the discrimination.

虽然在上述实施例中记录EFM调制数字音频信号,但本发明不仅仅限于这情况;例如,可以将本法明应用到各种调制诸如l-7调制、8-16调制和2-7调制。 Although the recording EFM modulated digital audio signal in the above embodiment, but the present invention is not limited to this case; for example, this law can be applied to various modulation such as Ming l-7 modulation, 8-16 modulation, and 2-7 modulation.

虽然在上述实施例中记录凹坑和岛的形式的数据,但本发明不仅仅限于这情况;例如,可以将本发明广泛地应用到记录标志和间隙形式的所需的数据。 Although the recording pits and the data in the form of islands in the above embodiment, but the present invention is not limited to this case; for example, the present invention can be widely applied to the desired mark and recording data in the form of a gap.

虽然在上述实施例中本发明应用于CD光盘及其外围设备以记录音频信号,但本发明不仅仅限于这情况;例如,可以将本发明广泛地应用到各种光盘诸如视频光盘及其外围设备。 Although in the above embodiment is applied to the present invention and its peripheral device to the CD audio recording signal, but the present invention is not limited to this case; for example, the present invention can be widely applied to various optical discs such as a video disc and their peripheral devices . (4-l)再一个实施例的结构 (4-l) A further embodiment of the structure

图12是本发明的再一个实施例光盘装置的方框图。 FIG 12 is a block diagram of an optical disc apparatus of a further embodiment of the present invention.

通过使激光束在原版光盘2上曝光,光盘装置1记录音频数据D1。 Exposed by the laser beam on a master disc 2, an optical disk apparatus for recording audio data D1. 从数字音频记录器得到音频数据Dl。 Dl audio data obtained from a digital audio recorder.

详细地说,在光盘装置l中,转轴马达4使原版光盘2旋转,保持在转轴马达4底部的FG信号发生电路输出FG信号,在旋转的每个预定的角度上, 该信号电平上升。 In detail, in the optical disk apparatus l, the spindle motor 2 rotates the optical disk master 4 so that, in the holding circuit outputs an FG signal FG signal occurs at the bottom of the spindle motor 4, at each predetermined angle of rotation, the signal level rises. 根据激光束在原版光盘上的曝光位置并且参考FG信号,转轴伺服电路5控制转轴马达4的旋转速度,因此以预定的旋转速度转动光盘2。 The exposure position of the laser beam on a master disc and with reference to the FG signal, the spindle servo circuit 5 controls the rotational speed of the spindle motor 4, so the optical disc 2 is rotated at a predetermined rotational speed.

用于记录的激光元件7包括气体激光元件等,它将激光束L1照射到要曝光的光盘2上。 7 laser element for recording element comprising a gas laser, etc., the laser beam L1 is irradiated will be exposed to the disc 2. 光调制器8A包括,例如,电声光元件。 8A comprises an optical modulator, for example, electro-acoustic optical element. 根据从调制器9输出的EFM(8-14调制)信号S2,光调制器8A使激光束经过通-断调制并且输出经调制的激光束L2。 The output from the EFM modulator 9 (8-14 modulation) signal S2, the optical modulator of the laser beam through the through 8A - off modulation and outputs the modulated laser beam L2.

光偏转器8B包括,例如,电声光元件。 8B light deflector comprising, for example, electro-acoustic optical element. 根据从密钥调制器IO输出的密钥调制信号KS,光偏转器8B使从光偏转器8A输出的激光束L2偏转,因而向光盘2的内/外区改变激光束L2的照射方向。 The key from the key signal KS modulated modulator output IO, 8B light deflector deflecting the laser beam L2 output from the optical deflector 8A, thereby changing the laser beam into the direction L2 / 2 of the outer area of ​​the disc.

反射镜12弯折从光偏转器10输出的激光束L3的路径,因而向光盘2输出激光束L3。 Folding mirror 12 from the laser beam path L3 output from the light deflector 10, and thus the output laser beam L3 to the optical disc 2. 物镜13将从反射镜12反射的激光束会聚在光盘2的记录面上。 The objective lens 13 from the mirror 12 reflecting the laser beam converged on the recording surface of the optical disc 2. 反射镜12和物镜13两者都通过刻螺纹装置(未图示)与光盘的旋转同步地从光盘2的内区一步步地移向外区。 Both mirror 12 and objective lens 13 are engraved screw means (not shown) rotating the optical disk from the inner region toward the outer region of the optical disc 2 through a step by step in synchronization.

结果,光盘装置1可以一步步地使激光束L3的聚焦点从光盘2的内区偏移到外区,因此,在光盘2上形成螺旋轨迹。 As a result, the optical disc apparatus 1 can be a step by step so that the focal point of the laser beam L3 is offset from the inner region to the outer region of the optical disc 2, thus forming a spiral track on the optical disc 2. 此外,在形成该轨迹的处理中, 光盘装置1根据EFM信号S2控制激光束Ll通过光偏转器8A的通/断状态, 因此,沿着轨迹顺次地形成凹坑串。 Further, in the process of forming the track, the optical disc device 1 controls the laser beam Ll ON / OFF state by the optical deflector according to the EFM signal S2. 8A, thus sequentially forming the pit string along the track. 此外,光盘装置1偏移激光束L2通过光偏转器8B的照射点。 Further, the optical disc apparatus 1 offset laser beam L2 is irradiated by the light deflector point 8B. 因此根据密钥调制信号KS使每一凹坑偏移到光盘的内/ 外区。 Thus each pit is shifted to the inner / outer area of ​​the disc according to a key modulated signal KS.

因此,在光盘装置1中,形成每一凹坑为了减小向光盘2的内/外区的偏差, 因此通过控制跟踪,使其与传统CD光盘播放机的跟踪有相同的特性,从以这原版光盘为基础而制造的光盘再现数据,即,记录数据的再现不受到任何凹坑串的干扰。 Thus, in the optical disc apparatus 1, each pit is formed in order to reduce the variation in / out area of ​​the disc 2, by controlling the tracing, so that the conventional CD disc player tracking have the same characteristics, in order that the disc master disc manufactured based on the reproduction data, i.e., reproducing the recorded data is not subjected to any interference in the pit string. 更具体地,在这实施例中,将每一凹坑到光盘内/外区的偏差压縮到 More specifically, in this embodiment, each pit of the optical disc into / compressed to bias the outer region

33即使在最大偏差时也不大于轨迹螺距的1/50。 Nor more than 33, even if the track pitch when the maximum deviation of 1/50.

数字音频磁带录音机3将音频数据Dl输出到加密电路15。 Digital audio tape recorder 3 outputs the audio data Dl to the encryption circuit 15. 加密电路15 根据DES(数据加密标准)代码并且参考密钥信息KY,对该音频数据加密,然后将结果输出。 The encryption circuit 15 DES (Data Encryption Standard) and the reference code for the key information KY, encrypt the audio data, and then outputs the result.

子代码发生器16顺次地产生子代码数据SC并且将所产生的数据SC以预定的用于CD光盘的格式输出。 Subcode generator 16 sequentially children property code data SC and SC to the generated data for a predetermined output format of the CD. 调制电路9处理从加密电路15输出的输出数据Sl,以及子代码SC,因此在预定的CD光盘格式中产生EFM信号S2。 A modulation processing circuit 9, thus producing output data from the EFM signal S2 Sl output from the encryption circuit 15, and the predetermined subcode SC in the CD format. 详细地说,调制电路9将校正代码加到从加密电路15输出的输出数据Sl和子代码数据SC两者上,然后交错和调制数据以产生EFM信号S2。 In detail, the modulation circuit 9 to the correction code is appended to both the code data from the output data of the encryption circuit 15 outputs Sl and sub-SC, and then interleaved data to generate modulated EFM signal S2.

结果,在光盘装置l中,可以以原始光盘2上凹坑串的形式对音频数据Dl加密和记录。 As a result, in the optical disk apparatus l may form pit string of the optical disk 2 to the original audio data and recording the encrypted Dl.

密钥调制电路10密钥信息KY产生密钥调制信号KS并且将结果输出。 Key modulation circuit 10 generates the key information KY modulated key signal KS and outputs the result. 结果,在光盘装置1中,根据向光盘的内/外区偏移的每一位记录密钥信息KY并且将结果输出。 As a result, in the optical disc apparatus 1, and outputs the result according to each information recording key KY is shifted to the inner / outer area of ​​the disc. 在这光盘装置l中,由只读存储器等产生密钥信息。 In this optical disc apparatus l, the key information is generated from the read-only memory or the like.

图13是密钥调制电路10的详细方框图。 FIG 13 is a detailed block diagram of the modulation circuit 10 of the key. 在密钥调制电路10中,如图14 所示,将EFM信号S2(图14A)输入PLL电路(锁相环)20并且在那里从EFM信号S2再现时钟CK(图14B)。 Modulation circuit 10 in the key, shown in Figure 14, the EFM signal S2 (FIG. 14A) input to the PLL circuit (Phase Locked Loop) 20 and a reproduction clock CK (FIG. 14B) where the EFM signal S2.

同步检测电路21顺次地参考时钟信号CK锁存EFM信号S2,并且确定信号S2的连续的逻辑电平,因此从EFM信号S2中检测同步图形。 Synchronization detecting circuit 21 to the reference clock signal CK sequentially latching the EFM signal S2, and determines a continuous logic level signal S2, and therefore detects the synchronization pattern from the EFM signal S2. 同步检测电路21输出帧时钟FCK,它的逻辑电平在每个同步图形时上升。 Synchronization detecting circuit 21 outputs a frame clock FCK, its logic level at each rising synchronous pattern. 结果,在CD 光盘的格式中,使同步图形位于每个帧的起始,包括588信道时钟。 As a result, the CD-ROM format, the synchronization pattern at the beginning of each frame 588 comprises a channel clock. 结果,同步检测电路21输出帧时钟FCK,它的逻辑电平以588个时钟为单位而上升。 As a result, the synchronization detecting circuit 21 outputs a frame clock FCK, its logic level in a clock unit 588 rises.

子代码检测电路22参考时钟CK监视EFM信号S2并且根据EFM信号S2 对子代码解码。 Subcode detection circuit 22 monitors the reference clock CK of the EFM signal S2 in accordance with the EFM signal S2 and the sub-code is decoded. 此外,子代码检测电路22监视包含在经解码的子代码中的时间信息并且输出1-秒检测脉冲SECP,每当时间信息变化1秒时它的信号电平上升。 In addition, the subcode detection circuit 22 monitors the subcode contained in the decoded time information and outputs the second detection pulse SECP 1-, each time the time information is changed its one second rising signal level. 结果,在CD光盘的格式中,规定1秒有98帧,因此子代码检测电路22输出1秒检测脉冲SECP以致它的信号电平以帧时钟(FCK)的98个脉冲为单位而上升。 As a result, the CD-ROM format, a predetermined one second frame 98, so the subcode detecting circuit 22 outputs a one second detection pulse SECP such that its signal level to the frame clock (FCK) in units of 98 pulses rises.

计数器23是用于帧时钟FCK的多级计数器。 Counter 23 is a multi-stage frame clock FCK counter. 如果1-秒检测脉冲SECP上升,则使计数器值CT复位。 If the second detection pulse SECP 1- rises, the value of the counter CT is reset. 计数器23组成为环形计数器,它使计数值CT在几秒内循环。 Counter 23 consists of a ring counter, which circulates in the count value CT in seconds. 计数值CT与帧时钟FCK同步地变化。 The count value CT and the frame clock FCK changes in synchronization.

数据选择器24根据计数器23的计数值CT输出由其保存的数据,将其用作为地址。 The data selector 24 the counter 23 outputs the count value CT of the stored data therefrom, which was used as the address. 计数器23的计数值CT与同步图形同步地周期性地以每秒98帧为单位而变化。 Counter value CT 23 and sync pattern 98 periodically varies in units of frames per second in synchronization. 因此数据选择器24输出98类数据,与从计数值CT得到的作为地址的同步图形同步地一个一个地输出。 Thus data selector 24 outputs 98 data class, one by one in synchronization with the output synchronization pattern as an address obtained from the count value CT. 计数器23的计数值根据1-秒检测脉冲SECP在数秒内周期性地变化,因而数据选择器24在数秒内周期性地重复输出这98类数据。 The count value of the counter 23 is periodically changed in seconds The second detection pulse 1- SECP, thus repeating the data selector 24 outputs the 98 class data periodically in seconds.

在这一实施例中,通过在数秒内重复l-位数据的输出(所述一位数据是对98类数据中的每一个规定的),数据选择器24与同步图形同步地输出98-位数据。 In this embodiment, the output data bits l- repeated in seconds (the data for each of a predetermined class of data 98), the data selector 24 and the output 98- bit sync pattern in synchronization data. 此外,规定54-位密钥信息KY中的每一位为98-位数据的每一预定位并且规定剩余的44位的每一位为无意义位。 The predetermined 54- bit key information KY of each of a predetermined and the remaining 44 bits of each bit is a meaningless bit for each predetermined 98- bit data. 在本实施例中,将值是固定的数据KZ 规定为这种无意义数据。 In the present embodiment, the value is fixed KZ predetermined data for such meaningless data.

M-系列发生电路25包括分别串联连接的多个触发器电路和异或电路。 M- series generating circuit 25 comprises a plurality of flip-flop circuits are connected in series and an exclusive OR circuit. 根据帧时钟FCK, M-系列发生电路25在这些触发器电路中的每一个中设置初始值。 The frame clock FCK, M- series generating circuit 25 sets the initial value of each of these flip-flop circuits in. 此外,M-系列发生电路25如此地将设置数据一个一个地与时钟CK同步地传送,并且产生M-系列随机数数据MS,由于将数据值在预定级之间反馈, 所以在该数据MS中,逻辑电平1和0出现的概率相同。 In addition, M- series generating circuit 25 is provided in such a way the data transmitted one by one in synchronism with the clock CK, and generates a M- series random number data MS, since the data value is fed back between predetermined stages, so that the MS data logic level and the same occurrence probability of 0 1. 结果,M-系列发生电路25输出随机数数据MS,它是与时钟CK同步的二进制系列的伪随机数,因此在一帧周期中重复相同的图形,它是588个时钟周期。 Results, M- series generating circuit 25 outputs random number data the MS, which is a binary pseudo-random number series with the clock CK synchronized so that one frame period is repeated in the same pattern, which is 588 clock cycles.

异或电路(X)27接收随机数数据MS和来自数据选择器24的输出数据KD, 然后输出数据MS和KD的异或的信号MS1(图14C)。 Exclusive OR circuit (X) 27 MS receives the random number data KD from the data and the output data selector 24, and the output signal MSl (FIG. 14C) and exclusive OR data KD of MS. 详细地说,如果从数据选择器24输出的数据KD的逻辑值是0,则异或电路27输出随机数数据MS, 如果从数据选择器24输出的数据KD的逻辑电平是1,则异或电路27输出具有反向逻辑电平的随机数数据MS。 In detail, if it is 0, the exclusive OR 27 outputs the circuit random number data MS from the logical value of the data KD of 24 outputs of the data selector, if it is 1, then different from the logic level of data KD of 24 output from the data selector the output circuit 27 or the reverse logic level has random number data MS. 结果,异或电路27可以用随机数调制组成输出数据KD的密钥信息KY并且输出经调制的密钥信息。 As a result, the exclusive OR circuit 27 and outputs the key information may be modulated key information KY random modulation of the composition of the output data KD.

触发器电路28参考EFM信号S2的上升沿锁存来自异或电路27的输出信号MS1并且输出经锁存的数据MS1(图14D)。 Flip-flop circuit 28 latches the rising edge of the reference output signal MS1 from the exclusive OR circuit 27 outputs the EFM signal S2 and the data latched MS1 (FIG. 14D). 在这个实施例中,由于使光盘2 根据EFM信号S2对激光束曝光,在以原版光盘2为基础而制造的光盘上,每一凹坑的扫描起始边缘对应于EFM信号S2的上升沿。 In this embodiment, since the optical disc 2 in accordance with the EFM signal S2 on the rising edge of the laser beam exposure, to master the optical disc 2 on the basis of an optical disc manufactured, a scanning start edge of each pit corresponding to the EFM signal S2. 结果,在一个时间间隔内,触发电路28保存所锁存的数据MS1的逻辑电平,所述时间间隔是在当顺次地从异或电路27输出数据MS1时(在作为用于形成每一凹坑的参考周期的时钟周期时)和当锁存输出数据MS1时(给其规定起动每一凹坑的定时和至少完成一个凹坑的形成)两时间之间的时间间隔。 As a result, within a time interval, the trigger circuit 28 the logic level latched data stored MS1, and when the time interval is sequentially output data from the exclusive OR circuit 27 when the MS1 (as for forming each when the cycle period of the reference clock pits) and the time when the latch output data MS1 (to which a predetermined start timing and completion of each of the at least one recess formed pit) between the two time intervals.

放大器电路29是一驱动放大器,用于驱动光偏转器8B并且放大来自触发器28的输出信号和将经放大的信号作为密钥调制信号KS输出到光偏转器8B。 The amplifier circuit 29 is a drive amplifier for driving the optical deflector and 8B amplified output signal from the flip-flop 28 and outputs the amplified signal to the modulated signal KS as a key optical deflector 8B. 结果,放大电路29能按位向原始光盘2的内/外区偏移激光束的照射点。 As a result, the amplifier circuit 29 of the laser beam irradiation spot can be shifted to the inner / outer area of ​​the original disc 2 bit. 在放大电路29中,设置增益以便限制位置偏移使之最大不超过轨迹螺距的1/50。 In amplifying circuit 29, to set the gain so as to limit the maximum position deviation not to exceed 1/50 of the track pitch. 因此能防止光盘装置1在再现凹坑串形式的记录数据时失败。 The optical disc apparatus 1 can be prevented at the time of failure reproducing the recorded data pit string form.

在本实施例中,因此,研制和处理用如此方法曝光于激光束的原始光盘2 用于电子成形,因此制造了母光盘。 In the present embodiment, therefore, the development and use such a method of processing an optical disk original is exposed to a laser beam 2 for forming an electronic, thus producing a disc master. 然后用母光盘制造压模。 Then a stamper disc masterbatch. 此外,用与原始CD光盘制造过程相同的方法用压模制造光盘。 Further, with the original CD disk manufacturing method for manufacturing the same process using the stamper disc.

结果,在本实施例中,可以制造光盘,以致记录以凹坑串形式加密的音频数据D1和用每一凹坑P向光盘的内/外区的偏移记录密钥信息KY(图14E-2)。 As a result, in the present embodiment, the optical disc can be manufactured, so that the pit string recorded in the form of encrypted audio data D1 recorded and the key information KY (FIG 14E- is offset inner / outer region of the optical disc with each pit P 2). 换言之,在通常的CD光盘中,根据EFM信号S2在轨迹中心沿着轨迹一个一个地形成凹坑P,并且根据每一凹坑的长度和凹坑之间的时间间隔记录音频数据(图14E-l)。 In other words, in the conventional CD disc, according to a S2 EFM signal are formed in a center of the track along the track pit P, and the interval recording audio data (FIG. 14E- The time between each pit length and the pit l). 反之,在本实施例的光盘的情况下,要记录的音频数据已经根据每一凹坑的长度和凹坑间的时间间隔加密,根据每一凹坑向光盘的内/外区的偏移记录用于对音频数据的加密进行解密的密钥信息KY。 Conversely, in the case of the optical disc according to the present embodiment, audio data to be recorded has been encrypted according to the time interval between each pit length and pit, an offset into the recording / outer area of ​​the disc according to each pit for the encrypted audio data is decrypted key information KY.

图15是光盘装置30的方框图,用于再现来自如上制造的光盘31的数据。 FIG 15 is a block diagram of an optical disk apparatus 30 for reproducing data from the optical disc 31 manufactured as described above. 在这光盘装置30中,在伺服电路33的控制下,转轴马达32以恒定的线速度转动光盘装置31。 In this optical disc device 30, under control of the servo circuit 33, the spindle motor 32 is rotated at a constant linear velocity optical disk apparatus 31.

光学拾音器34将激光束照射到光盘31上并且在预定的接收元件上接收反射激光束,然后输出再现信号RF,它的信号电平根据在接收元件上的反射激光束的光束强度而变化。 The optical pickup 34 irradiates a laser beam to the optical disk 31 and receives the reflected laser beam on a predetermined receiving element, and then outputs the reproduction signal RF, signal level which varies according to the intensity of the reflected laser beam on the beam receiving element. 再现信号RF的信号电平根据记录在光盘31上的每一凹坑而变化。 The signal level of the reproduction signal RF varies in accordance with each of the pits recorded on the optical disc 31.

此外,光学检测34处理反射激光束,在光束接收元件上用所谓的推挽方法接收该光束,因此产生推挽信号PP,在光盘31的内外区上,该信号根据每 Further, the optical detector 34 processes the reflected laser beam, the light beam receives a so-called push-pull method on the beam receiving element, thus generating a push-pull signal PP, on the inner and outer area of ​​the disc 31, the signal according to each of

36一凹坑位置相对于激光束照射点而变化。 36 varies a pit position with respect to the laser beam irradiation point. 光学检测装置34输出聚焦误差信号, 它的信号电平根据聚焦误差的量而变化。 Optical detection means 34 outputs a focus error signal, a signal level which varies according to an amount of focus error.

在伺服电路33中,该推挽信号PP用于限制频带,因而产生跟踪误差信号, 它的信号电平根据激光束离轨迹中心的偏移而变化。 In the servo circuit 33, the push-pull signal PP for limiting a frequency band, thereby generating a tracking error signal whose signal level varies according to an offset from the track center of the laser beam. 以及,用该跟踪误差信号控制光学拾音器34的跟踪。 And a tracking error signal with the tracking control of the optical pickup 34. 伺服电路33用聚焦误差信号控制光学检测34的聚焦。 A focus servo circuit 33 controls the optical detecting a focus error signal 34.

高通滤波器(HPF)35切除推挽信号的低频分量,因此从推挽信号PP中除去激光束照射点离轨迹中心的偏移,所述推挽信号的信号电平根据激光束离轨迹中心的偏移而变化。 A high pass filter (HPF) 35 low-frequency component removal push-pull signal, and therefore removed from the PP laser beam spots push-pull signal offset from the track center, the signal level of the push-pull signal in accordance with the laser beam from the track center changes shift. 结果,高通滤波器(HPF)检测偏移检测信号HPP,它的 As a result, the high-pass filter (HPF) of HPP shift detection signal is detected, it

信号电平根据每个凹坑离轨迹中心的偏移而变化。 The signal level of which varies according to an offset from the track center of each pit.

二进制电路36使再现信号RF在预定的参考电平上二进制化,因此产生二进制信号BD。 Binary circuit 36 ​​binarizes the reproduced signal RF at a predetermined reference level, and thus generates a binary signal BD.

PLL电路37参考该二进制信号BD而工作,因此再现了再现信号RF的信道时钟CCK。 A reference PLL circuit 37 operates the binary signal BD, and therefore the reproduction channel clock reproduced signal RF CCK.

EFM解调电路38参考信道时钟CCK接连地锁存二进制信号BD,因此再现对应于EFM解调信号S2的数据。 EFM demodulating circuit 38 with reference to the channel clock CCK successively latching the binary signal BD, thus reproducing the demodulated data corresponding to the EFM signal S2. 此外,EFM解调电路38,在解调该再现数据成为EFM后,参考帧同步将经解调数据分成8-位的单元,对每一所产生的8-位信号去交错并且将结果输出到ECC(误差校正代码)电路39。 Further, the EFM demodulating circuit 38, the reproduction data demodulated in the EFM becomes, with reference to the frame synchronization unit will be divided into 8-bit demodulated data, 8-bit signals for each of the generated deinterleaving and outputs the result to ECC (error correction code) circuit 39.

根据加到EFM解调电路37的输出数据中的误差校正代码,ECC电路39 校正在输出数据中的误差,然后再现经加密的音频数据和输出再现数据。 The output data of the EFM demodulating circuit 37 is added to the error correction code, the ECC circuit 39 corrects errors in the output data, and reproducing the encrypted data and audio data output. .

密码处理电路40根据由密钥检测电路42检测到的密钥信息KY对音频数据解密并且输出经解密的数据。 Cryptographic processing circuit 40 on the audio data decrypted by the key according to the detected key information KY detection circuit 42 and outputs the decrypted data.

数/模转换电路(D/A)41将来自密码处理电路40的数字音频数据Dl转换成模拟数据并且输出模拟音频数据S4。 Dl digital audio data is digital / analog conversion circuit (D / A) 41 from the cipher processing circuit 40 into analog data and outputs the analog audio data S4.

密钥检测电路42参考信道时钟CCK和二进制信号BD处理偏移检测信号HPP,因此再现密钥信息KY并且将再现数据输出到密码处理电路40。 42 with reference to the channel clock CCK, and processing the binary signal BD shift detection signal detecting circuit HPP key, key information KY thus reproducing the reproduction output data, and the cryptographic processing circuit 40.

图16是密钥检测电路42的详细方框图。 FIG 16 is a detailed block diagram of the key detection circuit 42. 在密钥检测电路42中,子代码检测电路52参考信道时钟CCK监视二进制信号BD并且从二进制信号BD中解调子代码。 In the key detection circuit 42, the sub code detecting circuit 52 monitors the reference channel clock CCK and demodulates the binary signal BD from the sub-code in the binary signal BD. 此外,子代码检测电路52监视包含在经解调子代码信息中的时间信息并且输出l-秒检测脉冲SECP,每当时间信息变化一秒时,它的信号电平上升。 In addition, the subcode detecting circuit 52 monitors the time information included in the demodulated sub-code information and outputs the second detection pulse SECP l-, every time one second time information is changed, its signal level rises.

凹坑检测电路54按信道时钟CCK的定时顺次地锁存二进制信号BD并且对连续两个经锁存BD信号相互比较,因此根据比较结果检测凹坑上升时间。 Pit detection circuit 54 according to the timing of the channel clock CCK sequentially latches the binary signal BD and BD of successive two latched signals compared with each other according to the comparison result of the rise time is detected pit. 凹坑检测电路54根据比较结果在凹坑上升定时时输出边缘检测信号PT。 Pit detection circuit 54 outputs the edge detection signal PT of the pit when the rise timing based on the comparison. 凹坑检测电路54还用相同的方法检测凹坑下降定时并且根据相应凹坑上升时间的检测结果围绕每一凹坑的中心输出中心检测信号CTP。 Pit detection circuit 54 also detects the same manner as the fall timing pit center and outputs a detection signal about the center of each pit CTP corresponding pits of the detection result of the rise time.

同步检测电路55顺次地参考信道时钟CCK锁存二进制信号BD,并且确定二进制信号BD的连续的逻辑电平,因此检测同步图形。 Synchronous detecting circuit 55 sequentially with reference to the channel clock CCK latches the binary signal BD, and determines the logic level of the continuous binarized signal BD, and thus the synchronization pattern detection. 结果,如图17所示, 同步检测电路55产生一设置脉冲FSET(图17A3、 17B和17D)和一清零脉冲fclr(國nc)并且输出这些脉冲,在同步图形开始定时时,设置脉冲的信号电平仅上升一个时钟周期,而清零脉冲的信号电平比设置脉冲FSET延迟一个时钟周期才上升。 The results, shown in Figure 17, the synchronization detecting circuit 55 generates a set pulse FSET (FIG 17A3, 17B and 17D) and a clear pulse FCLR (State nc) and the output pulses, the sync pattern at the start timing of the set pulse only the signal level rises one clock cycle, and the clear pulse signal level than the set pulse FSET rises delayed by one clock cycle before.

结果,因为在二进制再现信号BD中,是以588个时钟周期为单位和每秒98次来检测同步图形的(图17A1和17A2),用该同步图形,同步检测电路55 能同步地输出清零脉冲FCLR和设置脉冲FSET。 As a result, since the binary signal BD reproduction, is 588 clock cycles and 98 times per second to detect a synchronization pattern (Fig. 17A1 and 17A2), the synchronization pattern with the synchronization detection circuit 55 can be output in synchronization cleared set the pulse and pulse FCLR FSET.

M-系列发生电路56参考清零脉冲FCLR对每一地址初始化,然后根据信道时钟CCK通过地址访问内部只读存储器,因而对应于在光盘装置1中产生的M-系列随机数数据MS,产生M-系列随机数数据MX。 Reference circuit 56 clear pulse FCLR M- sequence generator initialization for each address, then in accordance with the channel clock CCK address by accessing the internal ROM, thus corresponds to a M- series random number data MS generated in the optical disc apparatus 1, a M - series random number data MX.

结果,对应于在光盘装置1中进行的处理,密钥检测电路42能再现各种再现密钥信息KY所必需的参考信号。 As a result, corresponding to the processing performed in the optical disc apparatus 1, key detection circuit 42 can reproduce various reference signal reproduced key information KY necessary.

在密钥检测电路42中,模/数(A/D)转换电路57参考信道时钟CCK,将模拟偏移检测信号HPP转换成数字HPP信号,然后输出8-位数字再现信号。 In the key detection circuit 42, an analog / digital (A / D) converting circuit 57 with reference to the channel clock of CCK, converts the analog shift detection signal HPP HPP into a digital signal, and then outputs the 8-bit digital reproduction signal. 反极性电路(-l)58使数字再现信号的极性反相并且输出反极性信号。 Reverse polarity circuit (-l) 58 inverts the polarity of the digital playback signal and outputs a reverse polarity signal.

在边缘检测信号PT的定时时间,锁存电路59将M-系列随机数数据MX 锁存,并在一个时间内保持所锁存的数据MX,所述时间是当异或电路在密钥调制电路10中处理数据MX时如参考图13所述,g卩,当开始形成凹坑时和当完成凹坑的形成时两个时间之间的时间间隔。 Edge detection signal at the timing of the PT time, the latch circuit 59 M- MX series random number data are latched and remain latched MX data at a time, the time when the exclusive OR circuit in the key modulation circuit the MX 10 processing data as described with reference to FIG 13, g Jie, when the start time and the formation of pits between the two pits are formed upon completion of the time interval. •'— • '-

选择器60根据从锁存电路59输出的输出数据MZ的逻辑电平选择从A/D The selector 60 selects the A / D output data according to the MZ output from the latch circuit 59 logic level

38转换电路57直接进入的数字信号或从反极性电路58进入的反极性数字信号, 并输出经选择的信号。 38 conversion circuit 57 or directly into a digital signal entering from the opposite polarity reverse polarity circuit 58 is a digital signal, and outputs the selected signal. 换言之,当数据MZ的逻辑电平是1时选择器选择和输出直接进入的数字信号,当数据MZ的逻辑电平是0时选择并输出反极性数字信号。 In other words, when the logic level of the data MZ is 1, the selector selects and outputs a digital signal directly into, MZ when the logic level of data is selected and output a digital signal of opposite polarity 0. 结果,选择器60再现密钥信息KY(KD)的逻辑电平并输出用多-值数据再现的数据RX,所述密钥信息通过使用多-值数据用M-系列随机数数据MS 调。 As a result, the reproduction selector 60 key information KY (KD) and the output logic level of multi - value data of the RX data reproduction, the key information by using a multi - value data series random number data MS M- tone.

加法器62是16-位数字加法器并使再现数据RX和从累加器(ACU)63输出的输出数据AX相加,并输出总值。 The adder 62 is a 16-bit adder and the digital reproduction data RX and the output data AX output from the accumulator (ACU) 63, and outputs the total. 累加器63包括16-位存储器,用于保存来自加法器62的输出数据。 The accumulator 63 comprises a 16-bit memory for storing the output data from the adder 62. 累加器63将其保存的输出数据反馈到加法器62,因而与加法器62—起组成累加加法器。 The accumulator 63 outputs its stored data back to the adder 62, the adder and thus accumulation adder 62- starting composition. 换言之,累加器63用清零脉冲FCLR对它自己清零,然后与来自凹坑检测电路54的输出信号CTP同步地累加来自加法器62的输出数据。 In other words, its own accumulator 63 is cleared by clear pulse FCLR, then accumulating the output data from the adder 62 in synchronization with the output signal from the CTP pit detection circuit 54.

结果,组合加法器62和累加器63,使它们根据M-系列随机数数据MS对在每一凹坑中心检测到的偏移值进行加或减。 As a result, a combination of the adder 62 and accumulator 63, so that they MS to add or subtract an offset value in the center of each pit detected by the M- series random number data. 对于每一个帧周期重复这种加/ 减处理。 For each frame this cycle is repeated addition / subtraction processing.

根据预定的参考值,二进制电路64使来自累加器63的输出数据AX变成二进制,并且输出二进制化的数据。 The predetermined reference value, the binary circuit 64 from the output data AX of the accumulator 63 into binary, and outputs binarized data. 结果,二进制电路64能将从密钥信息KY 再现的数据RX用由选择器60再现的多-值数据转换成二进制数据。 As a result, data from the binarizing circuit 64 can be reproduced key information KY multi RX reproduced by the selector 60-- value data into binary data.

移位寄存器(SR)65是一98-位移位寄存器。 A shift register (SR) 65 is a 98- bit shift register. 移位寄存器(SR)65在设置脉冲FSET的上升时间顺次地接收从二进制电路64输出的二进制数据,然后传送该数据。 A shift register (SR) 65 receives the binary data output from the binary circuit 64 at the rise time of the set pulse FSET sequentially, and then transmits the data.

触发器电路(F/F)55在1-秒检测脉冲SECP的时间间隔内以位-并行的状态取得从移位寄存器65输出的数据并保存该数据。 Flip-flop circuit (F / F) 55 1- seconds within a time interval of the detection pulse SECP bit - status acquired parallel data output from the shift register 65 and stores the data. 结果,在密钥检测电路42中的触发器电路66可以保存包含密钥信息KY和固定值数据KZ的数据KD。 As a result, flip-flop circuit 66 in the key detection circuit 42 may save the data containing the key information KD KY and KZ in the fixed-value data. 密钥检测电路42选择性地输出保存在触发器电路66中的预定位,因此将密钥信息KY提供给密码处理电路40并对加密的音频数据解密。 Key detection circuit 42 is selectively output in a flip-flop circuit 66 in a predetermined position, thus supplied to the encryption processing circuit 40 and encrypted audio data decryption key information KY.

(4-2)又一实施例的工作情况 The operation of the embodiment (4-2) A further embodiment

在上述的结构中,在本实施例中,在光盘31的制造过程中,光盘装置l使激光束曝光在原始光盘2上,研制和处理该原始光盘用于电子成形,因此制造了母光盘。 In the above configuration, in the present embodiment, the manufacturing process of the optical disc 31, the optical disc apparatus the laser beam exposed l on the original disc 2, and the development process for an electronic original disc shaped, thus producing a disc master. 然后用该母光盘制造压模和光盘。 Then the optical disc stamper and optical disc master.

当使激光束曝光在原版光盘2上时,在光盘装置l中,从数字音频磁带录制机3输出的音频数据Dl进入编码电路15并在那里用预定的密钥信息KY编码。 When the laser beam exposure on a master optical disc 2, the optical disc apparatus l, Dl audio data from the digital audio tape recorder 3 to a coding output circuit 15 and where the key information KY with a predetermined coding. 结果,对音频数据D1进行处理致使没有该密钥信息KY不能再现。 As a result, the audio data D1 is processed without causing the key information KY can not be reproduced. 此后, 在调制电路9中,用与传统CD光盘相同的方法,将音频数据D1转换成EFM 信号S2。 Thereafter, the modulation circuit 9, and in the same manner as the conventional CD disc, converts the audio data D1 into the EFM signal S2.

在光盘装置l中,EFM信号S2控制激光束L1的通/断状态,而使受控制的激光束L2顺次地从原版光盘2的内区会聚到外区,因而在目标光盘上从内区到外区形成螺旋轨迹。 L in the optical disc apparatus, the EFM signal S2 for controlling the laser beam L1 on / off state of the controlled laser beam L2 converged sequentially from the inner region of the optical disc master to the outer zone 2, and thus from the zone on the target disc the spiral track formed in the outer region. 因此将经编码的音频数据DI以凹坑串的形式沿轨迹记录。 Thus the DI is recorded in the form of pit string along the track encoded audio data.

当如此地将音频数据D1以凹坑串的形式记录时,在光盘装置1中的密钥调制电路IO可以调制密钥信息KY使之不容易解密,因而产生密钥调制信号KS。 When the audio data D1 thus recorded in the form of pit string, the optical disc 1 in the modulation circuit IO device key may modulate the key information KY so as not to be easily decrypted, thereby generating a modulation key signal KS. 以及,该密钥调制信号KS驱动光偏转器8B和将激光束的焦点移向原始光盘2的内/外区。 And a focus of the modulated key signal KS and 8B drives the light deflector of the laser beam toward the inner / outer zone 2 of the original disc. 根据每一凹坑向光盘2的内/外区的偏移,因此记录了密钥信息KY。 The offset of each pit of the optical disc 2 into the / out region, so that the recording key information KY.

因此,在本实施例中,可能提供经编码的音频数据D1致使没有密钥信息KY不能再现,同样,将密钥信息KY—起记录在一个媒体上。 Accordingly, in the present embodiment, may be provided by the resulting encoded audio data D1 can not be reproduced without the key information KY Similarly, KY- key information from a recording medium.

限制如上形成的每个凹坑的位置偏离不超过轨迹螺距的1/50,因此即使用显微镜也不容易识别凹坑的偏移。 Limit position of each pit is formed as described above without deviating more than 1/50 of the track pitch, so that the use of the microscope is not easy to identify the shifted pits. 这造成分析每个凹坑的位置偏移极为困难, 所以能有效地保护光盘使之不得非法复置。 This results in an offset position of each pit is extremely difficult, they are able to effectively protect the disc so that it may illegally re-set analysis.

此外,由于位置移差极小,在相位和幅度方面可以正确地用足够的裕度再现再现信号。 Further, since the shift position of the minimum difference, in terms of phase and amplitude may be sufficient margin correctly reproducing signal. 因此可以正确地再现以凹坑串形式记录的音频数据D1。 It is possible to correctly reproduce the audio data D1 is recorded in the form of pit string. 有时这种凹坑向光盘的内/外区的偏移会影响跟踪的控制,但是在本实施例中凹坑的如此小的偏移从不干扰跟踪的精度。 Sometimes affect this pit-tracking control is offset inner / outer area of ​​the optical disc, but the accuracy of such a small offset in the embodiment never interfere with tracking pits in the present embodiment. 因此,在实际应用中可以以足够的精确度来再现以凹坑串形式记录的音频数据。 Thus, in practical applications may be sufficient accuracy to reproduce the audio data is recorded in the form of pit string.

详细地说,因为在CD光盘上规定一秒有98帧,当对每一帧规定一位数据时,在数据选择器24中设置密钥信息KY(图13),因此将包含44'无意义固定位的数据KZ加到包含54-位DES代码的密钥信息KY中。 In detail, as specified in the CD-ROM 98 has one second, when a predetermined data for each frame, the data selector 24 is provided in the key information KY (FIG. 13), thus comprising 44 'meaningless KZ added to data of a fixed bit comprises bit DES key information KY 54- code.

40设置密钥信息,因此从数据选择器24输出对一帧规定的一位,以致根据在同步检测电路21中检测到的同步图形和在子代码检测电路22中检测到的SECP,使其按秒进行循环。 Setting the key information 40, and therefore from the data selector 24 outputs a predetermined one pair, and that detected in the subcode detecting circuit 22 detects the synchronization pattern in the synchronization detection circuit 21 SECP, so press seconds cycle.

同时,M-系列发生电路25产生随机数数据MS,它是二进制系列,其中逻辑电平1和O与时钟同步地以相同的概率出现,并根据指示检测同步图形的FCK在帧中重复。 Meanwhile, M- series generating circuit 25 generates random number data the MS, which is a binary series, wherein a logic level 1 and O with the clock synchronization occurs with the same probability and is repeated in the frame synchronization pattern is detected according to an instruction FCK.

当异或电路27从密钥信息KY(KD)和随机数数据MS之间得到异或时,从数据选择器24输出密钥信息KY(KD),并用随机数数据MS调制。 When the exclusive OR circuit 27 is obtained from between the different key information KY (KD) and the random number data MS or from the data selector 24 outputs key information KY (KD), and modulated with random number data MS. 此时,因为这随机数数据MS是二进制系列,其中逻辑电平1和0以相同的概率出现,来自异或电路27的经调制的输出数据使逻辑电平1和0以几乎相同的概率出现。 In this case, since it is a binary random number data MS series, wherein a logic level 0 and 1 appear with the same probability, the output data from the exclusive OR circuit 27 is modulated so that a logic level 1 and 0 at almost the same probability .

在密钥调制电路10中,在EFM信号S2上升时,以如此方法产生的输出数据MS1由触发器28锁存,因此在形成在原始光盘上的每一凹坑中选择地规定输出数据的一位。 Each pit modulation circuit 10 in the key, when the EFM signal S2 rises, the output data produced in such a method MS1 latched by the flip-flop 28, thus formed on the original optical disc to selectively output data of a predetermined bit. 以及,根据这一位的逻辑电平,通过光偏转器8B使激光束L3的聚焦点向光盘2的内/外区偏移,因此根据向光盘2的内/外区偏移记录密钥信息KY。 And, according to the logic level of this bit, 8B by the optical deflector so that the focal point of the laser beam L3 is shifted toward the inner / outer region of the optical disk 2, so that the recording information according to the key is shifted to the in / out area of ​​the optical disc 2 KY.

在本实施例中,从数据选择器输出以每帧单个位为单位的密钥信息KY(KD) 并将该密钥信息KY(KD)用随机数数据MS调制,因此使凹坑P按位置偏移。 In the present embodiment, a single bit output for each frame in units of key information KY (KD) from the data selector and the key information KY (KD) random number data MS modulation, pits P are thus position offset. 因而,在光盘上,凹坑P不规则地向光盘2的内/外区偏移。 Accordingly, on the optical disc, irregular pits P is shifted to the inner / outer area of ​​the disc 2.

因而,在本实施例中,以分布状态的多个位记录密钥信息KY(KD)的位, 因此对用这种从轨迹中心随机偏移的凹坑记录的密钥信息KY(KD)极难找寻。 Accordingly, in the present embodiment, a plurality of bits distributed state of the recording-bit key information KY (KD), and therefore the key information KY recording pit from the track center by this random offset (KD) electrode difficult to find. 更正确地,即使用显微镜检查光盘的数据记录面,只能看到好象经噪声调制的位串,因此用眼找这种密钥信息KY极为困难。 More correctly, i.e., using the data recording surface of the optical disc microscopy, can be seen as if the bit string after modulation noise, so this is very difficult to find the key information KY eye. 结果,在这种情况下,因为规定密钥信息KY的一位是588信道时钟,在分布状态时,密钥信息KY的一位至少以不少于50个凹坑来记录。 As a result, in this case, since a predetermined key information KY 588 is the channel clock, the state at the time of distribution, at least one key information KY of not less than 50 pits recorded.

此外,此时在随机数数据MS中,逻辑电平1和0以相同的概率出现,为了使凹坑向规定中心的内和外区偏移,它也以几乎相同的概率形成。 Further, in the random number data MS at this time, the logic level 1 and 0 at the same probability, in order to make the pit is shifted to the predetermined inner and outer regions of the center, it is formed at substantially the same probability. 以及,由于每个凹坑的位置偏移极小,当用显微镜对从光学拾音器得到的各种信号进行观察时,认为凹坑的偏移仅是噪声的混合。 And, since the position of each pit deviation is extremely small, when viewed various signals obtained from an optical pickup with a microscope, that the pit is shifted by noise mixing. 因此很难从这些信号的波形中检查是否有密钥信息KY存在。 It is difficult to check the waveforms of these signals if there exists the key information KY.

41另一方面,每一凹坑的偏移不包括任何直流的偏移元件。 41 On the other hand, each of the pits does not include any DC offset shift element. 此外,因为将输出数据MS1锁存在触发电路28中,以及每个凹坑根据数据MS1偏移其位置, 可以容易地检测凹坑的偏移,即使用极度降低的SN来检测。 Further, since the presence of the output data latch MS1 trigger circuit 28, and the offset data according to each pit MS1 offset position can be easily detected pit, i.e., the SN used to detect extremely reduced. 从用于检测跟踪误差的推挽信号PP中取得高频段分量而得到SN。 SN is obtained from the high band component to obtain a push-pull signal PP is used in detecting a tracking error. 结果,当在简单结构用传统光学拾音器再现密钥信息KY时,可以防止对光盘的非法复制。 As a result, when the reproduced key information KY of the conventional optical pickup with a simple configuration, can prevent illegal copying of the optical disc. 更具体地,正象在传统的CD光盘播放机中,如上制造的光盘30允许再现信号RF在二进制化电路36中二进制化,然后在EFM解调电路38中处理。 More particularly, just as in a conventional CD disc player, the optical disc 30 manufactured as described above allows the reproduction signal RF in a binarizing circuit 36 ​​binarizes then processed in the EFM demodulating circuit 38. 此外,在接下来的ECC电39中,对在信号RF中的误差进行校正,从而再现了经加密的音频数据。 Further, in the next 39 in the ECC, the error in correcting the RF signal to reproduce the encrypted audio data. 在接着的密码处理电路40中,根据分别得到的密钥信息KY对音频数据解密,因此将以凹坑串形式记录的音频信号通过D/A转换电路41可以再现成声音。 In the cipher processing circuit 40 then, according to the key information KY obtained audio data are decrypted, and therefore will pit string recorded in the form of an audio signal by D / A conversion circuit 41 can be reproduced as sound. 在光盘装置30中,由高通滤波器35限制通过光学拾音器34而得到的推挽信号PP的频带,从而可能检测偏离-轨迹-中心检测信号HPP,它的信号电平根据每个凹坑向具有简单结构的光盘2的内/外区的偏移而变化。 In the optical disc apparatus 30, the push-pull signal PP is band-limited by the optical pickup 34 is obtained by the high pass filter 35, which may detect departing - Track - central detection signal of HPP, its signal level according to each pit having inner / outer zone offset simple structure optical disc 2 varies. 此外,在光盘装置30中,由密钥检测电路42处理偏移检测信号HPP,因此可以再现密钥信息KY。 Further, in the optical disk apparatus 30, the processing by the key HPP shift detection signal detection circuit 42, it is possible to reproduce the key information KY. 详细地说,在密钥检测电路42中,由A/D转换电路57按信道时钟把偏移检测信号HPP转换成数字信号,然后由极性转换电路58使极性反相。 In detail, in the key detection circuit 42, the A / D conversion circuit 57 converts the channel-clock HPP shift detection signal into a digital signal, and the polarity switching circuit 58 by the polarity is inverted. 将这两类数字信号根据输出数据MZ选择地输入加法器62。 According to these two types of digital signal MZ output data selectively input to the adder 62. 对应于参考二进制信号BD的一个凹坑,产生数据MZ作为通过锁存电路59锁存随机数数据MS的结果。 Corresponding to the binary signal BD with reference to a pit, it is generated by random number data MZ, as the latch circuit 59 latches the result of MS data. 用这方式选择和输入加法器62的数字信号参考FCLR在那里经过累加,所述FCLR是经检测的同步图形。 Selection and input to the adder 62 is a digital signal FCLR reference through accumulation there, the FCLR sync pattern is detected by this method. 详细地说,当记录时,将来自A/D转换电路57的输出数据根据来自异或电路27(图13)的输出信号在EFM信号S2的上升时间加或减,作为加和减的结果的经累加的值AX(它是二进制鉴别的结果)对于每一帧在累加器63中累加。 In detail, when recording, from the A / D conversion circuit 57 outputs data in accordance with an output signal from the exclusive OR circuit 27 (FIG. 13) plus or minus in the EFM signal rise time S2 as addition and subtraction results the accumulated value AX (which is binary discrimination result) for each frame accumulated in the accumulator 63. 此外,当开始同步图形时,将在累加器63中的经累加的值AX送到移位寄存器65,从而对密钥信息KY进行了解调。 Further, when the sync pattern starts, the value in AX of the accumulator 63 is supplied to the accumulated shift register 65, whereby key information KY for demodulation. 结果,由于每一凹坑的偏移是如此地小以及将从每一凹坑得到的偏移检测信号HPP如此地对一帧累加,以致即使S/N比极低也经过二进制鉴别,在用高42S/N比二进制鉴别后,可以再现密钥信息KY。 As a result, since each pit is so small and the offset of each pit from a detection signal to be offset in such a way to a HPP accumulation, so that even if the S / N ratio is also low after the binary identification, with high 42S / N ratio of the binary discrimination can be reproduced key information KY. 因此肯定可以再现密钥信息, 当将它记录成不容易找寻时。 Thus certainly reproducing the key information, when it is not easy to record when looking. 在密钥检测电路42中,当电路42累加偏移检测信号HPP的信号电平时, 对应于每个凹坑的中心,累加器63取得来自加法器62的数据。 In the key detection circuit 42, the accumulation circuit 42 when the signal level of HPP shift detection signal level, corresponding to the center of each pit, the accumulator 63 to obtain data from the adder 62. 结果,在稳定的定时上对偏移检测信号HPP的信号电平进行累加,从而密钥检测电路42在检测精度方面更为改善。 As a result, the signal level of the accumulating the offset detection signal in a stable HPP timing detection circuit 42 so that the key is more improved in detection accuracy. 通过使用来自二进制电路36的二进制信号BD控制激光束的通/断状态也可以进行从上述原版光盘2的非法复制。 A laser beam by using a binary signal BD from the binary circuit 36 ​​controls the on / off state may also be illegally copied from the master disc 2. 然而,在这种非法复制中,记录与每一凹坑的位置离轨迹中心的偏移有关的密钥信息KY极为困难。 However, in such an illegal copy, the recording key information KY of the position of each pit from the track center offset related extremely difficult. 在本实施例中, 使非法复制原版光盘31成为极为困难。 In the present embodiment, the optical disk 31 so that illegal copy of the original becomes extremely difficult. 在从非法复制的光盘(仅如此地再现凹坑串)上再现音频数据的情况下,将不再现根据凹坑从轨迹中心的偏移而记录的密钥信息,因此输出仅像加密噪声的音频信号。 Case of reproducing audio data from the illegally duplicated optical disc (so only reproduce pit string), the key information is not reproduced in accordance with the track center offset from the pits and recorded, as only the output encrypted audio noise signal. 因此,不能正常地再现记录的音乐,从而非法复制的光盘变成无用,因而阻止了非法复制。 Therefore, it can not normally reproduce recorded music, which illegally copied discs becomes useless, thus preventing illegal copying. 因此,在本实施例中,可以记录密钥信息以便用供再现音频数据的光学拾音器再现,在再现以凹坑串形式记录的音频数据方面,不能非法记录而不存在任何负面效应。 Accordingly, in the present embodiment, the key information may be recorded so that the optical pickup of audio data used for reproducing, in the reproduction of audio data is recorded in the form of pit string, illegal recording is not without any negative effects. (4-3)又一个有效实施例的效果根据如上所述的光盘装置的结构,由于是以从轨迹中心向光盘的内/外区偏移的凹坑串的形式记录密钥信息,可以记录密钥信息以便用供再现音频数据的光学拾音器再现,在再现以凹坑串形式记录的音频数据方面,不能非法记录而不存在任何负面效应。 (4-3) the effect of a further embodiment according to the effective structure of the disc apparatus described above, since the form of pit string offset from the track center toward the inner / outer area of ​​the disc recording key information, may be recorded embodiment the optical pickup used for reproducing the key information for audio data reproduction, in reproducing the audio data recorded in the form of pit string, illegal recording is not without any negative effects. 结果,可以将用此密钥信息加密的音频数据以凹坑串的形式记录以致有效地防止非法复制。 As a result, the key information with the encrypted audio data recorded in the form of pit string so as to effectively prevent illegal copying. 此外,'因为在记录密钥之前已用二进制级对它进行调制,这种以从轨迹中心偏移的凹坑串形式记录的密钥信息难于找寻,这有效地阻止了非法复制。 Furthermore, 'because it has been used prior to recording its key binary level modulation, which in the form of pit string is offset from the track center of the recording of the information it is difficult to find the key, which effectively prevents illegal copying. 此外,由于对二进制级应用了造成逻辑电平1和0以相同概率,出现的M-系列随机数,来自光学拾音器的输出信号看起来像噪声混合,从而不容易找寻所记录的密钥信息并有效地防止非法复制。 Further, since the result of the logic level 1 and 0 at the same series of random numbers M- probability of occurrence of binary-level applications, the output signal from the optical pickup looks like noise mixing, so as not to easily find the key information is recorded and effectively prevent illegal copying. 本实施例也使对密钥信息的一位规定至少有50个凹坑成为可能,并设置这些凹坑使它们微微地偏离轨迹中心,从而可以可靠地再现所记录的密钥信息o详细地说,参考二进制级以对偏移检测信号的信号电平积分。 This embodiment also makes a predetermined key information is at least 50 pits becomes possible, and these recesses provided that they are slightly offset from the track center, so that the key can be reliably reproduce the recorded information o detail , binary level to the reference level of the integrated signal offset detection signal. 因此可以再现使之微微地偏离轨迹中心而记录的密钥信息。 Thus the key information can be reproduced so as to be slightly offset from the track center of the recording. 此外,由于将每个凹坑从轨迹中心的偏移限制到不超过轨迹螺距的1/50, 难于找寻以如此地微微偏离的凹坑形式记录的密钥信息。 Further, since the offset of each pit from the track center to limit to no more than 1/50 of the track pitch, it is difficult to find the key information in the form of pits in such a way slightly offset recorded. (5)又一个实施例在上述实施例中,虽然对一帧规定密钥的一位,但本发明不仅限于这情况; 例如,可以对一帧规定多个密钥位以及此外,可以对多个帧规定密钥信息的一位。 (5) In a further embodiment, the above-described embodiment, although a key to a predetermined, but the present invention is not limited to these cases; for example, for a predetermined plurality of bits and keys Further, the multi- a frame defining a key information. 以及,代替参考音频数据帧对这种密钥信息的规定,可以参考凹坑数规定密钥信息的一位。 And, instead of the key information out for this reference audio frame, reference may be a predetermined number of pits in the key information. 在上述实施例中,通过对一帧规定密钥信息的一位,虽然是以在分布状态的不少于50个凹坑记录密钥信息的一位,但本发明不仅限于这情况;例如, 可按需要变化对一位规定的凹坑数。 In the above embodiment, the key information by one of a predetermined, while a key information is recorded in the distribution of pits of not less than 50, but the present invention is not limited to these cases; e.g., You may need to change for a specified number of pits. 作为测试的结果发现,如果规定密钥信息的一位不少于20个凹坑,可以在足以满足实际应用的S/N比时记录密钥信息。 As a result of the test was found, the information recording key if a predetermined key information is not less than 20 pits may be sufficient for practical applications S / N ratio. 在上述实施例中,虽然使用了附加的无意义固定位来记录密钥信息,但本发明不仅限于这情况;例如,可以在要记录的密钥信息中附加误差校正代码和/或版权数据等。 In the above embodiment, although insignificant additional bit fixed key information is recorded, but the present invention is not limited to these cases; e.g., error correction code may be added and / or copyright in the data to be recorded in the key information and the like . 在上述实施例中,虽然是以凹坑串的形式记录所需的数据以及用于解密数据所需的密钥信息也是以凹坑从光盘的轨迹中心向/内外区的偏移的形式记录, 但本发明不仅限于这情况;例如,其它种类的数据,诸如用于对再现使能和禁止的鉴别数据,可以替代密钥信息。 In the above embodiment, although the form of pit string and the data required for recording key information required to decrypt the data are / is in the form of recording pits shifted from the track center of the disc to the inner and outer regions, However, the present invention is not limited to these cases; e.g., other kinds of data, such as a reproduction to enable disabled and authentication data, key information can be replaced. 在上述实施例中,虽然使在累加器中经累加的值经过二进制鉴别,从而再现密钥信息,但本发明不仅限于这情况;例如,可以使累加值经过多-值鉴别。 In the above embodiment, although the value in the accumulator so that the accumulated through binary identification, thereby reproducing the key information, but the present invention is not limited to this case; For example, the integrated value after multi - value of the discrimination. 在这情况下,可以以从轨迹中心偏移的凹坑记录多-值数据。 In this case, pits shifted from the track center of the recording multi - value data. 在上述实施例中,虽然在记录数字音频信号之前将它们调制为-EFM信号, 但本发明不仅限于这情况;例如,可以以各种调制对数字音频信号进行调制,44诸如1-7、 8-1、 2-7调制。 In the above embodiment, although the digital audio signals before recording them -EFM modulated signal, but the present invention is not limited to these cases; e.g., may be modulated in a variety of modulated digital audio signal, such as 44 1-7, 8 -1, 2-7 modulation.

在上述实施例中,虽然在光盘的整个表面记录密钥信息,但本发明不仅限于这情况;例如,可以仅在有限区内记录,诸如引导区。 In the above embodiment, although the key information is recorded on the entire surface of the optical disc, but the present invention is not limited to these cases; for example, only a limited recording area, such as a boot sector.

在上述实施例中,虽然以凹坑串的形式记录所需要的数据,但本发明不仅限于这情况;例如,可以以标记串的形式记录所需要的数据。 In the above embodiment, although the data is to be recorded in the form of pit string, but the present invention is not limited to these cases; e.g., data can be recorded in the form of a string tag.

虽然本发明应用于用于记录音频数据的光盘和它的外围装置,从而记录音频信号,但本发明不仅限于这情况;例如,本发明可以应用于各种类型的光盘, 诸如视频光盘以及它的外围装置。 Although the present invention is applied to an optical disc for recording audio data and its peripheral devices, to thereby record the audio signal, but the present invention is not limited to these cases; e.g., the present invention can be applied to various types of optical disc, such as a video disc and its peripheral devices.

如上所述,根据本实施例的光盘装置,当使用上述方法中的任一种时,每种盗版光盘的价值会大大地降低,从而可以防止这种盗版光盘的流行。 As described above, the optical disk apparatus according to the present embodiment, when any one of the above-described methods, the value of each of the pirated optical disc will be greatly reduced, thereby preventing prevalence of such pirated disks.

此外,根据本发明,由于局部地改变光盘的反射率,给予每个边缘位置信息一抖动,并且用抖动来附加记录所需的数据,所以可以记录诸如光盘鉴别代码等数据,对以凹坑串形式记录的数据串的再现没有不利的影响,以便用再现数据串的光学拾音器再现数据,但不被非法复制。 Further, according to the present invention, since locally changing the reflectivity of the optical disc, the position information given to each edge of a jitter, and to record additional data required by the jitter, it is possible to record data such as an optical disk authentication code, on the pit string to no reproduction data string recorded in the form of an adverse effect, in order to reproduce data using the optical pickup to reproduce data string, but is not an illegal copy.

此外,根据本发明,由于以凹坑从光盘的轨迹中心向内/外区偏移的形式记录如密钥信息之类的子数据,所以可以记录各种数据,以便用用于再现凹坑串形式记录的数据串的光学拾音器产生各种数据,但不能根据再现的方法进行非法复制。 Further, according to the present invention, since the form of pits inwardly / outer zone offset from the track center of the disc record sub data such as key information and the like, various kinds of data can be recorded, in order to reproduce pit string used for a data string recorded in the form of an optical pickup to generate various kinds of data but not an illegal copy of a method of reproducing.

Claims (9)

1.一种光盘再现装置,包括: 光拾取装置,包括: 激光束照射装置,用激光束的照射区域照亮凹坑串或标记串,所述凹坑串或标记串根据子数据在光盘上的轨迹中心沿径向有位置偏移,以及光检测器,用于从自激光束照射装置反射的光中检测凹坑或标记的存在与否; 主解调装置,用于从所述光检测器的结果中检测主数据,其中子解调装置用于检测与所述主数据的同步模式同步开始的所述子数据。 An optical disk reproducing apparatus, comprising: an optical pickup apparatus, comprising: a laser beam irradiation apparatus, the irradiation area is illuminated with a laser beam a pit string or a mark string, the pit string or mark string on an optical disk according to the sub-data the track center in the radial positional deviation, and an optical detector for the presence of the laser beam irradiation means from the reflected light detecting absence of pits or marks; primary demodulation means for detecting light from the the results of the detection device main data, wherein the sub-sub-data demodulating means for detecting said synchronization pattern of said main data in synchronization start.
2. 如权利要求l所述的光盘再现装置,其特征在于, 所述子数据有多个比特,以及凹坑或标记的一个位置偏移对应于一个比特。 The optical disc reproducing apparatus according to claim l, characterized in that a plurality of said sub-data bits, and a shift position of pits or marks corresponding to one bit.
3. —种光盘再现方法,包括以下步骤:用照射区域照亮一主轨迹以及沿径向相对于所述主轨迹横向偏移的位置; 沿所述主轨迹和所述横向偏移的位置接收从光盘上的凹坑串或标记串反射的光;从所述反射的光中检测主数据;以及根据所述凹坑串或标记串的偏移量从所述凹坑串或标记串的一部分中检测子数据,其中所述检测子数据的步骤包括用所述主数据的同步模式同步地偏移所述照射区域。 3 - Species optical disc reproducing method comprising the steps of: illuminating a region irradiated with the main track and radially relative to said main track laterally offset; a position along the main track and the lateral offset of the received from the pit string on an optical disk or a mark string reflected; detecting light from the primary data of the reflector; and based on the pit string or a mark string portion offset from said pit string or a mark string sub data detection, wherein the step of detecting said sub-data comprises a synchronization pattern of said main data in synchronization with shift of the irradiation region.
4. 如权利要求3所述的光盘再现方法,其特征在于, 所述子数据有多个比特,以及凹坑或标记的一个位置偏移对应于一个比特。 4. The optical disc reproducing method of claim 3, wherein said plurality of sub data bits, and a shift position of pits or marks corresponding to one bit.
5. —种光盘再现装置,包括: 光拾取装置,包括:激光束照射装置,用激光束的照射区域照亮凹坑串或标记串,所述凹坑串或标记串从光盘上的轨迹中心沿径向有位置偏移,以及光检测器,用于从自激光束照射装置反射的光中检测凹坑或标记的存在与否;主解调装置,用于从所述光检测器的结果中检测主数据,其中子解调装置,用于根据所述凹坑串或所述标记串的所述位置偏移来检测所述子数据;以及输出,用于输出所述主数据和所述子数据的至少一个,其中所述子解调装置用于检测与主数据的同步模式同步开始的子数据。 5. - kind of the optical disk reproducing apparatus, comprising: an optical pickup apparatus, comprising: a laser beam irradiation apparatus, the irradiation area of ​​illuminating the pit train with a laser beam or mark string, the pit string or a mark string on an optical disc from the track center positional deviation in the radial direction, and a light detector for the presence of the self apparatus from the laser beam reflected irradiation light detecting absence of pits or marks; primary demodulation means, for a result from the light detector detecting the main data, wherein the sub-demodulating means in accordance with said pit train or the location of the mark string offset detecting the sub data; and an output for outputting the main data and the at least one of the sub data wherein the sub data demodulation means for synchronizing the sub-pattern detection and synchronization start of the main data.
6. 如权利要求5所述的光盘再现装置,其特征在于, 所述子数据有多个比特,以及凹坑或标记的一个位置偏移对应于一个比特。 The optical disc as claimed in claim 5, wherein the reproducing apparatus, wherein a plurality of said sub-data bits, and a shift position of pits or marks corresponding to one bit.
7. —种光盘再现方法,包括以下步骤-用照射区域照亮一主轨迹以及沿径向相对于所述主轨迹横向偏移的位置; 沿所述主轨迹和所述横向偏移的位置接收从凹坑串或标记串反射的光; 从所述反射的光中检测主数据;以及根据所述凹坑串或标记串的偏移量从所述凹坑串或标记串的一部分中检测子数据,以及检测与主数据的同步模式同步开始的子数据。 7. - kind of the optical disk reproducing method comprising the steps of - illuminating an irradiated region and the main track in a radial direction with respect to the main track laterally offset position; a position along the main track and the lateral offset of the received from a pit string or a mark string reflected light; detecting light from the primary data of the reflector; and based on the pit string or a mark string offset from said pit string or a mark string portion of the detector data, and a synchronization pattern detecting synchronization with the main data sub-data begins.
8. 如权利要求7所述的光盘再现方法,其特征在于, 所述子数据有多个比特,以及凹坑或标记的一个位置偏移对应于一个比特。 8. The optical disk reproducing method of claim 7, wherein said plurality of sub data bits, and a shift position of pits or marks corresponding to one bit.
9. 一种密钥检测电路,包括-被配置成接收一检测结果和主数据的输入;再现装置,被配置成从所述检测结果中再现子数据;以及被配置成输出所述子数据的输出;其中所述检测结果是来自光检测器的信号并且基于在凹坑串或标记串的径向上的位置偏移,以及所述再现装置检测与所述主数据的同步模式同步开始的所述子数据。 A key detecting circuit, comprising - an input configured to receive a main data and a detection result; reproducing means configured to reproduce sub data from said detection result; and is configured to output the sub-data output; wherein the signal detection result from the light detector and based on the position in the pit string or a mark string on the radial offset, and a synchronization pattern detecting means and said reproduction of said main data of the synchronization start sub-data.
CN 200610100727 1998-10-07 1999-10-08 Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disk CN100541614C (en)

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CN1831995B (en) 2012-08-29
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CN1920987B (en) 2010-05-26
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CN100552796C (en) 2009-10-21
CN1901065B (en) 2010-09-08

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