WO2009017289A1 - Procédé d'émulation de disque optique, lecteur de disque optique l'utilisant et disque optique comprenant une zone de sécurité - Google Patents

Procédé d'émulation de disque optique, lecteur de disque optique l'utilisant et disque optique comprenant une zone de sécurité Download PDF

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Publication number
WO2009017289A1
WO2009017289A1 PCT/KR2008/000362 KR2008000362W WO2009017289A1 WO 2009017289 A1 WO2009017289 A1 WO 2009017289A1 KR 2008000362 W KR2008000362 W KR 2008000362W WO 2009017289 A1 WO2009017289 A1 WO 2009017289A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical disk
memory unit
contents memory
contents
file system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2008/000362
Other languages
English (en)
Inventor
In Chang Yang
Byung Ju Dan
Young Mo Goo
Byeong Rim Jo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020070115775A external-priority patent/KR20090012010A/ko
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Priority to US12/670,793 priority Critical patent/US8199622B2/en
Priority to CN200880100702A priority patent/CN101765882A/zh
Publication of WO2009017289A1 publication Critical patent/WO2009017289A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/10—Control of operating function, e.g. switching from recording to reproducing by sensing presence or absence of record in accessible stored position or on turntable
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
    • G06F21/80—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in storage media based on magnetic or optical technology, e.g. disks with sectors
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/0608—Saving storage space on storage systems
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/062—Securing storage systems
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0662—Virtualisation aspects
    • G06F3/0664—Virtualisation aspects at device level, e.g. emulation of a storage device or system
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
    • G06F3/0671—In-line storage system
    • G06F3/0673—Single storage device
    • G06F3/0674—Disk device
    • G06F3/0677—Optical disk device, e.g. CD-ROM, DVD
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00137—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to contents recorded on or reproduced from a record carrier to authorised users
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/28—Re-recording, i.e. transcribing information from one optical record carrier on to one or more similar or dissimilar record carriers

Definitions

  • the present disclosure relates to a method for emulating a separate contents memory as an optical disk, an optical disk drive using the same, and an optical disk including a security zone.
  • Examples of the high-density rewritable optical recording medium include a blue lay disk (BD), a high definition digital versatile disk (HD-DVD), etc.
  • the DVD has an about 4.7 GB recording capacity and the BD has an about 25 GB recording capacity.
  • the next generation high density/ultra miniature optical storage device After the BD standard has been introduced, the next generation high density/ultra miniature optical storage device has been developed. Examples of the next generation high density/ultra miniature optical storage device include technologies such as a super-lens, holography, near field recording, etc.
  • optical storage devices e.g., compact disk (CD), DVD, BD,
  • HD-DVD high definition digital versatile disk
  • a home or office of company keeps several tens to hundreds of optical storage disks containing various contents.
  • FIG. 1 is a block diagram of a structure of a related art optical disk drive.
  • the related art optical disk drive includes an optical disk 21, a pick-up unit 11, a servo unit 12, a signal processing unit 14, a memory 15, and a micom 13.
  • the optical disk 21 is a recording medium on which data are recorded, reproduced, and erased by a laser.
  • the pick-up unit 11 records/reproduces management information including data recorded on the optical disk 21.
  • the servo unit 12 controls operations of the pick-up unit 11.
  • the signal processing unit 14 demodulates a reproduction signal received from the pick-up unit 11 into a desired signal value, or modulates a signal to be recorded into a signal having a form necessary for performing a recording operation on the optical disk 21 to transmit the signal.
  • the memory 15 stores various information necessary for reproducing the optical disk 21.
  • the micom 13 controls operations of the above components.
  • the components form a recording/reproducing unit 10.
  • the pick-up unit 11 includes a laser light source such as a laser diode, a collimator lens, an objective lens driven by a focus actuator or a tracking actuator, a polarized beam splitter, an optical component such as a cylindrical lens, a photodetector converting light into an electrical signal, and a front monitor diode monitoring a laser output during a recording or reproducing operation.
  • a laser light source such as a laser diode, a collimator lens, an objective lens driven by a focus actuator or a tracking actuator, a polarized beam splitter, an optical component such as a cylindrical lens, a photodetector converting light into an electrical signal, and a front monitor diode monitoring a laser output during a recording or reproducing operation.
  • the micom 13 detects reflected light from the optical disk 21, and calculates an amount of the reflected light through the detected reflected light to generate a radio frequency (RF) signal representing a total sum of the reflected light with respect to each area of photodiodes. Additionally, the micom 13 generates a focus error signal FE, which is a signal detecting an out-of-focus laser illuminated by the pick-up unit 11 through an astigmatism method. Additionally, the micom 13 generates a tracking error signal TE detecting an out-of-track laser illuminated by the pick-up unit 11 through a push-pull method.
  • RF radio frequency
  • the memory 15 stores various information necessary for reproducing the optical disk
  • RAM random access memory
  • ROM read only memory
  • a controller 23 is responsible for controlling entire components.
  • a decoder 22 finally decodes output data in response to control of the controller 23 and then provides the decoded data to a user.
  • an encoder 24 converts an input signal into a signal of a predetermined format, e.g., a motion picture experts group 2 (MPEG2) transport stream, and then provides the converted signal to the signal processing unit 14 in response to control of the controller 23.
  • MPEG2 motion picture experts group 2
  • Fig. 1 illustrates components of recording and reproducing units of the related art optical disk drive.
  • the optical disk 21 the recording/reproducing unit 10, and the decoder 22 are used.
  • the recoding/reproducing unit 10, and the decoder 22 are used in response to control of the controller 23.
  • optical disk drive reproduces/executes only the contents stored on the optical disk 21, there is inconvenience that the optical disk 21 should be replaced with a new optical disk when a user intends to execute other contents.
  • optical disk cannot satisfy the demand of a user who desires to receive a great amount of contents.
  • Embodiments provide a method for emulating a separate contents memory as an optical disk and an optical disk drive that realize a virtual optical disk even when an optical disk is not present in the optical disk drive, and provide the virtual optical disk to a user.
  • Embodiments also provide a method for emulating a separate contents memory as an optical disk, an optical disk drive, and an optical disk that reinforce security to allow only a user who passes a predetermined authentication process to access a memory unit in which contents have been stored.
  • a separate contents memory unit is provided to an optical disk drive, and the contents memory unit is emulated (virtualized), so that a virtual optical disk can be executed.
  • the present disclosure relates to a method for emulating a separate contents memory as an optical disk, an optical disk drive using the same, and an optical disk including a security zone.
  • a method for emulating an optical disk in an optical disk drive having a separate contents memory unit includes: when an optical disk processing command from a host is present, judging whether the optical disk is present in the optical disk drive; when the optical disk is not present in the optical disk drive as a result of the judgment, executing the contents memory unit as a virtual optical disk; and displaying an application stored in the contents memory unit.
  • the executing of the contents memory unit as the virtual optical disk may include: copying a file system of the optical disk to apply the copied file system to the contents memory unit; and performing the optical disk processing command from the host using an optical disk processing instruction.
  • the copying of the file system may include: one of directly copying information of the file system of the optical disk to apply the copied information to the contents memory unit, and compressing information of the file system of the optical disk to apply the copied information to the contents memory unit.
  • the contents memory unit may be recorded in the same data form as that of the optical disk, and executed as a virtual optical disk regardless of an operating system operating the optical disk drive.
  • the method may further include, when the optical disk is present in the optical disk drive, displaying an application list of the optical disk.
  • an optical disk drive includes: an optical disk storage unit storing or reproducing contents using an optical disk; a contents memory unit storing contents therein and executed as a virtual optical disk when the optical disk is not present; and a controller controlling the optical disk storage unit and the contents memory unit, and controlling an access to be made, subject to the contents memory unit.
  • the controller may include: an optical disk management unit controlling the optical disk storage unit and performing an optical disk processing command of a host to return a result to the host; a contents memory management unit copying a file system of the optical disk to apply the file system to the contents memory unit so that the contents memory unit is executed as a virtual optical disk; and an optical disk judgment unit judging whether an optical disk is present when the optical disk processing command of the host is present.
  • the contents memory management unit may execute the contents memory unit as a virtual optical disk.
  • the contents memory management unit may copy and apply the file system of the optical disk to the contents memory unit, perform the optical disk processing command from the host using an optical disk processing instruction, and return one of a result and a state to the host in response to the command from the host.
  • the optical disk processing instruction may include an advanced technology attachment packet interface.
  • an optical disk includes: a fake zone that is accessible by all users without an authentication procedure; and a security zone that is accessible through the authentication procedure.
  • a program containing the authentication procedure may be embedded in the fake zone, and the fake zone and the security zone may use the same optical disk file system.
  • a start position that is accessible by the user may be changed into a start position of the security zone.
  • a user can use a virtual optical disk even when an optical disk is not present in an optical disk drive, and the virtual optical disk provides the same physical characteristic that that of a real physical optical disk, so that user convenience can improve.
  • the virtual optical disk performs the same operation as that of a real physical optical disk
  • the virtual optical disk in a disk drive can be read by any device regardless of an operating system (OS).
  • OS operating system
  • an optical disk is realized in the form of a virtual optical disk, there is no limit in size, access speed, and no limitation such as recognition time of a physical disk.
  • Fig. 1 is a block diagram illustrating the construction of a general optical disk drive.
  • Fig. 2 is a block diagram illustrating the construction of an optical disk drive according to an embodiment.
  • FIG. 3 is a flowchart of an optical disk emulation process according to an embodiment.
  • FIGs. 4 to 6 are schematic views explaining a process of copying a file system of an optical disk and applying the copied file system to a contents memory unit according to an embodiment.
  • Fig. 7 is an exemplary view illustrating a display screen for the case where an optical disk is not present according to a related art.
  • Fig. 8 is an exemplary view illustrating a display screen for the case where an emulation method is applied and an optical disk is not present according to an embodiment.
  • FIGs. 9 to 11 are schematic views illustrating the construction of a contents memory according to an embodiment.
  • Fig. 12 is a schematic view of an optical disk including a security zone according to an embodiment. Best Mode for Carrying Out the Invention
  • FIG. 2 is a block diagram illustrating the construction of an optical disk drive according to an embodiment.
  • the optical disk drive 100 includes: an optical disk storage unit 110 storing or reproducing contents using an optical disk; a contents memory unit 120 storing contents therein and executed as a virtual optical disk when the optical disk is not present; and a controller 130 controlling the optical disk storage unit 110 and the contents memory unit 120, and controlling an access to be made, subject to the contents memory unit 120.
  • the controller 130 can include an optical disk management unit 132 controlling the optical disk storage unit 110 and performing an optical disk processing command of a host to return a result to the host; a contents memory management unit 133 copying a file system of an optical disk to apply the file system to the contents memory unit 120 so that the contents memory unit 120 is executed as a virtual optical disk; and an optical disk judgment unit 131 judging whether an optical disk is present when an optical disk processing command of the host is present.
  • the optical disk drive 100 can further include an interface connection unit 140 providing an interface path to the host.
  • the optical disk drive 100 according to an embodiment can include not only the optical disk storage unit 110 reproducing/storing contents but also the separate contents memory unit 120 for emulation to an optical disk.
  • the contents memory unit 120 can include a separate memory unit, for example, a memory unit such as a RAM and a ROM, or can include a spare space of an internal memory of the optical disk drive. [51] Therefore, a limitation in the capacity of an optical disk can be solved by realizing the contents memory unit 120 as a virtual optical disk. [52] A user can access the optical disk drive 100 through a personal computer (PC) interface, and use the optical disk drive 100 through the interface connection unit 140. [53] When receiving a command from the host, the controller 130 controls the optical disk storage unit 110 or the contents memory unit 120. [54] More specifically, when an optical disk processing command from the host is received through the interface connection unit 140, the optical disk judgment unit 131 of the controller 130 judges whether an optical disk is present in the optical disk drive
  • the optical disk judgment 131 can judge whether the optical disk is present using various methods.
  • the various methods include a method of illuminating laser light and judging an optical disk is present when there is reflected light, and a method of rotating an optical disk and measuring a change in a rotation momentum to judge whether the optical disk is present.
  • the optical disk management unit 132 controls the optical disk storage unit 110 in response to a command from the host, and returns a result to the host.
  • the contents memory management unit 133 controls the contents memory unit 120 to be executed as a virtual optical disk in response to a command from the host, and returns a result to the host.
  • a method for realizing the contents memory unit 120 as a virtual optical disk will be described in detail.
  • Virtualization according to an embodiment, that is, an emulation process means a series of processes executing the contents memory unit 120 as a virtual optical disk.
  • characteristics to be checked to emulate the contents memory unit 120 as the optical disk There are characteristics to be checked to emulate the contents memory unit 120 as the optical disk. Examples of the characteristics include a disk characteristic (whether a disk has a ROM type or R/RW type), a disk size, a disk details (tracks, session information, etc.), and read/write information.
  • the optical disk processing command can include advanced technology attachment packet interface (ATAPI).
  • ATAPI advanced technology attachment packet interface
  • the ATAPI will be exemplarily described.
  • Examples of the ATAPI include an instruction of Get Configuration, an instruction of Test Unit Ready, an instruction of Read Capacity, an instruction of Read TOC/PMA/ATPI or Read Disc Information, an instruction of Read Track Information, an instruction of Read, and instructions of Write, Verify, and Write and Verify.
  • the instruction of Get Configuration returns profile information (e.g., type, size, power control characteristic) of the contents memory unit 120 as virtual disk information.
  • the instruction of Test Unit Ready returns a drive ready state.
  • the instruction of Read Capacity returns the maximum capacity of a disk.
  • the instruction of Read TOC/PMA/ATPI or Read Disc Information returns information of virtually set track/session.
  • the instruction of Read Track Information returns detail information of a track.
  • the instruction of Read maps a predetermined address zone of the contents memory unit 120 to a predetermined zone of an optical disk, so that the predetermined address zone can be recognized as if it were an optical disk.
  • the instructions of Write, Verify, and Write and Verity map a predetermined address zone of the contents memory unit 120 to a predetermined zone of an optical disk, so that the predetermined address zone is emulated as a zone for performing a data writing operation.
  • the contents memory management unit 133 can return a state or a result in response to the optical disk processing instruction.
  • Fig. 3 is a flowchart of an optical disk emulation process according to an embodiment.
  • the optical disk judgment unit judges whether an optical disk is present in the optical disk drive (S210 and S220).
  • Figs. 4 to 6 are schematic views explaining a process of copying a file system of an optical disk and applying the copied file system to a contents memory unit according to an embodiment.
  • FIG. 4 is a schematic view of a general file system of an optical disk.
  • the file system used for a general optical disk may be ISO9660, universal disk format (UDF), and UDF-bridge.
  • the file system can be divided into a file system zone
  • a representative name of a disk, a disk size, and a pointer indicating a data position can be stored in the file system zone 41.
  • Real data can be stored in the file data zone
  • Fig. 5 illustrates a file system copying method according to an embodiment.
  • the file system of an optical disk includes a plurality of blocks (not shaded portions) filled with zero. [79] Therefore, the file system can be copied using a small memory space by extracting only actually existing data blocks and not extracting blocks filled with zero from the file system zone. [80] Next, the file system of the optical disk can be completely copied using only a small memory space and can be applied to the contents memory unit by allocating a virtual zero-block space while emulation is performed.
  • FIG. 6 illustrates a file system copying method according to another embodiment.
  • the file system of an optical disk includes a plurality of blocks (not shaded portions) filled with zero.
  • the file system can be copied using a small memory space by extracting only actually existing data blocks and not extracting blocks filled with zero from the file system zone.
  • a virtual zero block space is allocated while emulation is performed. Unlike the case shown in Fig. 4B, since a zero block at the lowermost end of the file system zone does not need to be accessed, it does not need to be realized upon virtualization. Therefore, in this case, management can be facilitated by compressing the file system through update of position information using address shift, and consequently reducing a shift distance upon address mapping.
  • Fig. 7 is an exemplary view illustrating a display screen for the case where an optical disk is not present according to a related art
  • Fig. 8 is an exemplary view illustrating a display screen for the case where an emulation method is applied and an optical disk is not present according to an embodiment.
  • a related art optical disk drive displays DVD/CD-RW drive (E:) 51 on the screen of a PC to inform an empty state as illustrated in Fig. 7.
  • an optical disk drive using emulation an internal contents memory unit can be emulated and realized as if an optical disk were present even when the optical disk is not present.
  • Fig. 8 exemplarily illustrates VIRTUAL 52. Instead of this, a disk volume label name of the file system zone can be displayed.
  • FIGs. 9 and 11 are schematic views illustrating the construction of a contents memory according to an embodiment.
  • FIG. 9 is a schematic view of the contents memory unit 120 before a user authentication procedure is performed according to an embodiment.
  • the contents memory unit 120 of the present disclosure can include a fake zone 500 and a security zone 600. Also, a portion of the contents memory unit 120 that excludes the fake zone 500 and the security zone 600 exists as a spare memory zone 700.
  • the contents memory unit can include only the fake zone 500, include only the security zone 600, and include a proper combination of the fake zone 500 and the security zone 600.
  • the fake zone 500 is a zone that is accessible by all users, and the security zone 600 is a zone that is accessible only through user authentication.
  • the security zone 600 can include a plurality of consecutive zones.
  • a zone that can be accessed by a user before the authentication of the user is performed is only the fake zone 500.
  • FIG. 10 is a schematic view of the contents memory unit 120 after the user authentication procedure has been performed according to an embodiment.
  • a start position that is accessible by the user is changed into a start position of the security zone 600.
  • FIG. 11 is a schematic view illustrating the construction of the contents memory unit
  • the file system table of the file system (for example, ISO9660 or UDF) of an optical storage medium is stored in a portion 510 or 610 of the fake zone 500 or the security zone 600.
  • the fake zone 500 and the security zone 600 have the same file system configuration, and only a start point of a position accessible by a user is simply changed. Therefore, the existing format is maintained and a data zone can be protected.
  • Fig. 12 is a schematic view of an optical disk 800 including a security zone according to an embodiment.
  • the optical disk 800 including the fake zone 810 and the security zone 820 is illustrated in Fig. 12.
  • the fake zone 810 is a zone accessible by all users upon insertion of a disk.
  • the security zone 820 is a zone that can be accessed only when the user passes through a predetermined authentication procedure.
  • the security zone can include a plurality of consecutive zones. Since a program containing an authentication procedure is embedded in the fake zone 810, a process of having to install the authentication procedure is omitted, so that user convenience improves.
  • the fake zone 810 and the security zone 820 of the optical disk use the same file system. Also, when a user passes through the authentication procedure, a start position that is accessible by the user is changed into a start position of the security zone 600, so that the user can recognize the security zone as if it were the exiting disk.
  • a rest portion excluding the fake zone 810 and the security zone 820 is a spare memory zone 830.
  • the spare memory zone 830 denotes an extra memory zone that can be used for various purposes.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Software Systems (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

La présente invention concerne un procédé d'émulation d'une unité de mémoire de contenus séparée dans un disque optique, un lecteur de disque optique l'utilisant et un disque optique comprenant une zone de sécurité. Lors d'une commande de traitement de disque optique émanant d'un hôte, le procédé évalue s'il y a un disque optique dans le lecteur de disque optique. Lorsque l'évaluation révèle qu'il n'y a pas de disque optique dans le lecteur de disque optique, l'unité de mémoire de contenus est exécutée sous forme de disque optique virtuel. Une application stockée dans l'unité de mémoire de contenus s'affiche. Le lecteur de disque optique comprend une unité de stockage de disque optique, une unité de mémoire de contenus et un contrôleur. L'unité de stockage de disque optique stocke ou reproduit des contenus à l'aide d'un disque optique. L'unité de mémoire de contenus stocke des contenus et est exécutée sous forme de disque optique virtuel en l'absence du disque optique. Le contrôleur commande l'unité de stockage de disque optique et l'unité de mémoire de contenus, il commande également un accès devant avoir lieu en fonction de l'unité de mémoire de contenus. Le disque optique comprend une zone factice accessible à tous les utilisateurs sans procédure d'authentification et une zone de sécurité accessible grâce à la procédure d'authentification. Par conséquent, un utilisateur peut recevoir et utiliser des contenus désirés en se servant du lecteur de disque optique même en l'absence de disque.
PCT/KR2008/000362 2007-07-27 2008-01-21 Procédé d'émulation de disque optique, lecteur de disque optique l'utilisant et disque optique comprenant une zone de sécurité Ceased WO2009017289A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/670,793 US8199622B2 (en) 2007-07-27 2008-01-21 Method for emulating optical disk, optical disk drive using the same, and optical disk including security zone
CN200880100702A CN101765882A (zh) 2007-07-27 2008-01-21 用于仿真光盘的方法、使用该方法的光盘驱动器和包括安全区的光盘

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20070075626 2007-07-27
KR10-2007-0075626 2007-07-27
KR1020070115775A KR20090012010A (ko) 2007-07-27 2007-11-13 광디스크 에뮬레이션 방법 및 이를 이용한 광디스크드라이브
KR10-2007-0115775 2007-11-13

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102081932A (zh) * 2009-11-30 2011-06-01 日立民用电子株式会社 记录再现装置
KR101416322B1 (ko) * 2012-09-11 2014-07-08 도시바삼성스토리지테크놀러지코리아 주식회사 복사 방지된 타이틀의 인증 방법 및 이를 적용하는 재생장치

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0488419A (ja) * 1990-07-25 1992-03-23 Nec Corp 光磁気ディスク媒体の領域管理方式
JPH04111113A (ja) * 1990-08-31 1992-04-13 Kawasaki Steel Corp ハードディスクエミュレータ
JPH04192027A (ja) * 1990-11-27 1992-07-10 Canon Inc 情報処理装置
JP2001092602A (ja) * 1999-09-21 2001-04-06 Kowa Co 情報再生システム
US20010014883A1 (en) * 2000-02-15 2001-08-16 Shigeaki Yamane Portable recording medium and method of using portable recording medium
KR20040039679A (ko) * 2002-11-04 2004-05-12 주식회사 뮤즈텔 에물레이터를 갖는 휴대용 저장 장치
KR20060089491A (ko) * 2005-02-04 2006-08-09 삼성전자주식회사 플래시 메모리를 포함한 데이터 저장 장치 및 그것의 머지방법

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0488419A (ja) * 1990-07-25 1992-03-23 Nec Corp 光磁気ディスク媒体の領域管理方式
JPH04111113A (ja) * 1990-08-31 1992-04-13 Kawasaki Steel Corp ハードディスクエミュレータ
JPH04192027A (ja) * 1990-11-27 1992-07-10 Canon Inc 情報処理装置
JP2001092602A (ja) * 1999-09-21 2001-04-06 Kowa Co 情報再生システム
US20010014883A1 (en) * 2000-02-15 2001-08-16 Shigeaki Yamane Portable recording medium and method of using portable recording medium
KR20040039679A (ko) * 2002-11-04 2004-05-12 주식회사 뮤즈텔 에물레이터를 갖는 휴대용 저장 장치
KR20060089491A (ko) * 2005-02-04 2006-08-09 삼성전자주식회사 플래시 메모리를 포함한 데이터 저장 장치 및 그것의 머지방법

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102081932A (zh) * 2009-11-30 2011-06-01 日立民用电子株式会社 记录再现装置
US8665680B2 (en) 2009-11-30 2014-03-04 Hitachi Consumer Electronics Co., Ltd. Recording/reproducing apparatus
KR101416322B1 (ko) * 2012-09-11 2014-07-08 도시바삼성스토리지테크놀러지코리아 주식회사 복사 방지된 타이틀의 인증 방법 및 이를 적용하는 재생장치
US9087186B2 (en) 2012-09-11 2015-07-21 Toshiba Samsung Storage Technology Korea Corporation Device and method for authenticating contents-protected information

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