WO2005076261A1 - 情報記録媒体、情報再生装置及び方法 - Google Patents
情報記録媒体、情報再生装置及び方法 Download PDFInfo
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- WO2005076261A1 WO2005076261A1 PCT/JP2005/001754 JP2005001754W WO2005076261A1 WO 2005076261 A1 WO2005076261 A1 WO 2005076261A1 JP 2005001754 W JP2005001754 W JP 2005001754W WO 2005076261 A1 WO2005076261 A1 WO 2005076261A1
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- information
- recording
- reproduction
- reproducing
- recorded
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Classifications
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- 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
- G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
- G11B19/122—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark involving the detection of an identification or authentication mark
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- 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
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- 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
- G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
- G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
- G11B20/00797—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of times a content can be reproduced, e.g. using playback counters
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- 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
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
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- 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
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
Definitions
- the present invention relates to a technical field of an information recording medium such as an optical disc which can be recorded and reproduced by irradiating a laser beam, and an information reproducing apparatus and a method for reproducing such an information recording medium.
- the range of the light intensity (referred to as “reproducing power range” in the present application as appropriate) is larger than the range of the power of the laser beam capable of erasing the recorded information (referred to as “erasing power range” in the present application). Is also set low. Further, the range of the power of the laser beam in which information can be recorded (hereinafter, appropriately referred to as “recording power range”) is set higher than the erasing power range.
- reproduction power range, erasing power range, and recording power range are specific to the recording layer, and generally such settings can be obtained depending on the material and thickness of the recording layer.
- the information recording / reproducing apparatus is configured to irradiate the recording laser with much higher power than the reproducing laser.
- Patent Literature 1 discloses that the power of a reproducing laser of an information recording / reproducing apparatus is increased to near the power at which information data on an information recording medium is erased, and the reproducing laser is controlled a certain number of times. There is disclosed a technique for erasing recorded information by irradiating the information.
- a recordable recording area similar to a recordable optical disk such as a CD-R or a DVD-R and a read-only recording area similar to a read-only optical disk such as a CD-ROM or a DVD-ROM.
- the recording area of the optical disc to the area near the outer circumference and the area near the inner circumference of one optical disc.
- a hybrid type optical disk that has been divided and combined has also been proposed.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2001-331942
- Patent Document 2 JP 2001-67731 A
- Patent Document 1 it is possible to perform reproduction at a power that cannot actually be recorded by merely bringing the reproduction power close to the recording power, and there is an erasure avoiding means. Further, according to the above-mentioned No. 1 and No. 2 hybrid type optical discs, there is a means for avoiding the combination with the technique of limiting the number of times of reproduction for the same reason.
- An object of the present invention is to provide an information recording medium capable of performing the information recording, and an information reproducing apparatus and a method for reproducing the information recording medium.
- the information recording medium according to claim 1 of the present invention has a structure in which the first recording information is recorded so as not to become unreproducible with a reproducing operation.
- An information recording medium having a reproduction-only area and a reproduction number limited area in which the second recording information is recorded so as to be unreproducible with a predetermined number of reproduction operations, wherein the second recording information is It is associated with the first record information.
- an information reproducing apparatus has the first and second recording media recorded on the information recording medium according to claim 1.
- An information reproducing apparatus for reproducing information comprising: reproducing means for reproducing the first and second recorded information; and reproducing the first recorded information, the reproducing means corresponding to the first recorded information.
- Determining means for determining whether or not the reproduction of the first recording information corresponding to the above has been completed.
- An information reproducing method solves the above-mentioned problem.
- the first and second information recorded on the information recording medium according to claim 1 are provided.
- a determining step of determining whether or not the reproduction of the recorded information is completed.
- FIG. 1 shows a basic structure of an optical disc according to an embodiment of the information recording medium of the present invention, and an upper part is a schematic plan view of an optical disc having a plurality of recording areas, and The side part is a schematic conceptual diagram of the recording area structure in the radial direction.
- FIG. 2 is a graph showing a specific example of a reproduction power range, an erasure power range, and a recording power range of a recording layer in an optical disc reproduction limit area according to an embodiment of the present invention.
- FIG. 3 is a schematic enlarged perspective view of a part of the optical disc according to the embodiment of the present invention as viewed from the recording surface side of the optical disc.
- FIG. 4 is a schematic structural diagram showing a structure of a recording area, a read-only area, and a read count limiting area of an optical disc according to an embodiment of the present invention.
- FIG. 5 is an external perspective view showing a track count direction on a recording surface of the optical disc according to the embodiment of the present invention.
- FIG. 6 is a conceptual diagram showing a state of second record information recorded in a reproduction count restriction area according to another embodiment of the present invention.
- FIG. 7 is a block diagram showing an overall configuration of an optical disc information reproducing apparatus according to an embodiment of the present invention.
- FIG. 8 is a flowchart showing a reproducing operation of the optical disc by the information reproducing apparatus according to the embodiment of the present invention.
- 60— ⁇ ⁇ 1st data is also Nth data, 150... Restricted number of playback times, 150 ⁇ 1 to 150-N... 160: read-only area, 160-1 to 160-N: 1st data zone Nth data zone, 200: information reproducing device, 202: optical pickup, 203: spindle motor, 204: head amplifier, 210 ... Sum generation circuit, 211... pit data demodulation circuit, 212 ⁇ pit data correction circuit, 213 ⁇ Interface, 220, push-pull signal generation circuit, 221, low-pass filter, 222, servo unit, 300, CPU, G: gnoreve track, L: land track, ⁇ ⁇ Readable emboss area, EP... Emboss pit, ES... Emboss space
- the first recording information cannot be reproduced along with the reproducing operation! / Recorded information has been An information recording medium having a number-of-reproductions-restricted area recorded so as to be unreproducible with the number of reproduction operations, wherein the second recording information is associated with the first recording information.
- the second recording information recorded in the reproduction number limitation area by the information reproduction device is reproduced once or plural times by a predetermined number of times. Can only be played. At the same time, before or after this, the first record information recorded in the read-only area can be reproduced. After that, after the reproduction is performed a predetermined number of times, the second recording information can no longer be reproduced, for example, the second recording information is erased in accordance with the reproduction operation of the predetermined number of times.
- the first recording information may be kept reproducible.
- the reproduction of the first recording information may be disabled.
- the second record information and the number of times the first and second record information are reproduced can be relatively easily limited.
- the second record information is reproduced a predetermined number of times and the second record information is reproduced. (1) If only the second record information is recorded again after the record information becomes unreproducible, the first record information is maintained as it is, so that the first and second record information can be reproduced after all. Can be restored.
- the information recording medium can be reused.
- the second recording information may be configured to be reproducible only once as a predetermined number of times in the reproduction number limited area.
- the reproduction may be performed only a plurality of times, such as two, three, or four times, as a predetermined number of times.
- the number of reproduction times may be strictly limited, for example, only once or twice, or the number of reproduction times may be restricted in a certain number range, for example, about five times or about ten times.
- the second recording information is associated with the first recording information.
- each of the plurality of second record information is associated with a corresponding one of the plurality of first record information.
- Such an association may be a logical association or a physical association.
- the “logical association” means, during reproduction and recording, a reproduction-only area in which the first recording information is recorded and a reproduction frequency limit in which the second recording information corresponding to the first recording information is recorded.
- the association with the area is based on the logical address assigned to both areas. Specifically, for example, identification numbers of a plurality of first recording information and addresses of a plurality of read-only areas are registered in a table management information or the like in which the identification numbers are registered.
- the identification numbers of the plurality of pieces of second recording information and the addresses of the plurality of reproduction count restriction areas are registered in the same management information or the like in which a registered table is registered. Therefore, for example, each of the plurality of second record information can be logically associated with a corresponding one of the plurality of first record information. Alternatively, the identification numbers of the plurality of read-only areas and their respective addresses are registered in the registered table management information or the like. On the other hand, a table or the like in which the identification numbers of the plurality of reproduction count restriction areas and their respective addresses are registered in the management information or the like.
- each of the plurality of reproduction count limited areas in which the second recording information is recorded can be logically associated with a corresponding one of the plurality of reproduction-only areas in which the first recording information is recorded.
- “physical association” refers to a reproduction-only area in which the first recording information is recorded and a reproduction frequency limit area in which the second recording information corresponding to the first recording information is recorded during reproduction and recording. And are related based on the physical structure of the recording area. Specifically, the area before the start or after the end of the N-th read-only area is defined as the N-th number-of-times-restricted area, and before or at the end of the start of the N + 1-th read-only area.
- each of the plurality of second recording information is physically associated with a corresponding one of the plurality of first recording information.
- whether the second record information is associated with the first record information is registered in, for example, the management information or the memory of the information recording device. It is known when the first record information is reproduced.
- the second recorded information is reproduced and erased by a discontinuous reproduction operation. It may be configured to include a plurality of minimum information units that can be removed.
- the “minimum information unit” is a constituent unit of the minimum size of the second record information that can be reproduced and erased. More specifically, each time the progress of reproduction is determined, the determination can be made by reproducing only a small amount of each second record information, that is, at least a minimum information unit. Therefore, after the determination, one or more minimum information units remain in each second record information. Therefore, it is possible to predict how many times the information recording medium will be played back according to the content of each piece of first recording information, such as the content of the game, for example.
- the second record information is recorded for the minimum amount of information unit that exceeds the quantity, the second record information will be completely erased within the life of the information recording medium within the range of normally expected usage. It will not be lost. That is, in practice, it is possible to determine the progress of the reproduction to the end by using each piece of the second recording information. If all of the second recorded information is reproduced by an abnormal usage, it is determined that the reproduction of the information recording medium has been completed, but there is no particular problem.
- the second recording information associated with the first recording information becomes, for example, continuous.
- the reproduction becomes impossible due to a specific reproduction operation, that is, the data is erased simultaneously with the reproduction.
- the playback of the first recorded information which is the content data of the first stage of a game for home PC
- the first second recording information recorded in the reproduction count restriction area cannot be reproduced, for example, with a continuous reproduction operation.
- the second recording information includes a plurality of minimum information units that can be reproduced and erased by a discontinuous reproduction operation, at the time of continuous reproduction or the next insertion of a disc, for example, track jump or For example, only a small amount of the first second record information, which is recorded in the reproduction limit area by the discontinuous reproduction operation by scanning or the like, that is, the minimum information unit cannot be reproduced. It is detected that the second record information does not exist. This makes it possible to determine that the reproduction of the first first record information, which is the content data of the first stage, recorded in the read-only area, for example, has been completed.
- the reproduction of the second first record information which is the content data of the second stage, for example, recorded in the reproduction-only area, is not completed.
- the reproduction power of the second first record information which is the content data of the second stage
- the reproduction processing can be performed up to the N-th first recording information which is the content data of the N-th stage.
- the presence / absence of each piece of second recording information detected at the time of reproduction of the information recording medium depends on whether the reproduction of each piece of first recording information associated with each piece of second recording information has been completed. Serves as a binarized flag indicating whether or not. Therefore, it is possible to relatively easily detect or judge whether or not the force of the completion of the reproduction in the first recording information has been applied, while restricting the number of times of reproduction. Therefore, for example, it is possible for the user to reliably or easily determine at what level or up to which stage the reproduction of the content data has been completed.
- the first force also follows the order of reproduction of the Nth first recorded information, for example, the inner force on the outer periphery based on the temporal and spatial locality in the operation of an optical pickup or the like. They may be arranged alternately. Therefore, the stage is completed for the N-th first and second recorded information and data closer to them, which are likely to be incomplete until the end of the reproduction of the information recording medium. Opportunities for irradiating the laser beam for reproduction by the track jump or the scan of whether or not it is not required are reduced.
- the information recording medium of the information recording medium is unnecessarily irradiated. It is possible to prevent the N-th first and second recorded information and data close thereto from being used up as flags before the reproduction is completed. However, they can be arranged arbitrarily according to the use or purpose of the Nth first recorded information from the first first recorded information.
- the first recording information such as content data recorded on the information recording medium can be normally recorded for each hierarchical level by a normal optical disc player, optical disc recorder, etc. The information can be reproduced, and the entire information recording medium can be reused very efficiently.
- the information processing apparatus includes a plurality of the limited number of reproduction times, and the read-only area is arranged between the plurality of restricted number of reproduction times. I have.
- the second recording information is recorded in, for example, at least one of the plurality of reproduction frequency restriction areas separated from each other by the reproduction-only area. Therefore, it is possible to reproduce and erase the second recording information recorded in at least one of the plurality of reproduction frequency restriction areas according to the logical reproduction order of the first recording information recorded in the reproduction-only area.
- information indicating an association between the second recording information and the first recording information is recorded in the read-only area.
- information such as a pointer indicating the association between the first record information and the second record information is recorded in the read-only area as at least a part of the first record information. Therefore, for example, at the same time as or before or after the first recording information is reproduced by the information reproducing apparatus, the address and the like of the corresponding second recording information are known.
- the first recording information and the second recording information are more easily and quickly performed than when the information indicating the association is collectively recorded in the management information or the like. Can be associated with
- the second recording information includes content information reproduced after reproducing the first recording information.
- the second record information is used to indicate that the second record information exists. For example, instead of dummy information such as “Null” or “0”, for example, content information indicating at least one of an image and music is included. Therefore, compared with the case where this content information is recorded in the first recording information, for example, the second recording information can be deleted at the same time as the reproduction, so that time and recording area can be saved. Becomes possible.
- the embodiment according to the information reproducing apparatus of the present invention includes the first and second recording information recorded in the above-described embodiment of the information recording medium of the present invention (including its various aspects).
- Control means for controlling the reproducing means so as to reproduce the second recording information, and presence / absence of the second recording information recorded in the reproduction number-limited area is detected.
- Determining means for determining whether or not reproduction of the first recording information has been completed.
- the management information is reproduced by the reproducing means including, for example, a processor, a demodulator, and an optical pickup before the actual reproducing operation.
- the reproducing means including, for example, a processor, a demodulator, and an optical pickup before the actual reproducing operation.
- the read management information may be stored by, for example, a processor, a memory, or the like.
- the reproduction means may use the first recorded information, for example, one of the plurality of first recorded information, more specifically, the content data of the first stage of a game for a personal computer for home use.
- the reproduction of the first recorded information is executed.
- the reproduction means completes the reproduction of the first first record information, it is logically or physically associated with the first first record information under the control of the control means.
- the first second recording information becomes unreproducible with, for example, a continuous reproducing operation, that is, is erased at the same time as being reproduced.
- the determination means for example, the number of times of reproduction is performed by the reproduction means for executing track jump, scanning, or the like.
- the absence of the first second record information is detected by, for example, the small amount of the second record information recorded in the restricted area, for example, the smallest information unit cannot be reproduced. This makes it possible to determine that the reproduction of the first first record information recorded in the read-only area has been completed! /.
- the information is recorded in the number-of-reproductions-restricted area by the reproducing means.
- the presence of the second second record information is detected. This makes it possible to determine that the reproduction of the second first record information, which is the content data of the second stage, recorded in the reproduction-only area, for example, is not completed.
- the playback means should start the playback power of the second first record information, which is the content data of the second stage.
- playback processing can be performed up to the N-th first recording information, which is the content data of the N-th stage.
- the second second record information for example, even after the reproduction and determination relating to one minimum information unit are performed, the other minimum information units are still deleted from the second record information. It is recorded in a reproducible state next time that it cannot be done.
- the information reproducing apparatus of the present invention when reproducing the information recording medium, is associated with each piece of the first recording information and indicates whether or not the reproduction of each piece of the first recording information is completed. It is possible to detect the presence / absence of each piece of second recording information that plays a role as a binarized flag. Therefore, the information reproducing apparatus can relatively easily determine whether or not the reproduction of the first recording information has been completed while limiting the number of times of reproduction. Therefore, for example, the user can reliably or easily determine at what level or to what stage the reproduction of the content data has been completed.
- the determining means controls the reproducing means such that the reproducing laser beam moves in a direction crossing the recording track in the reproduction frequency limit area. In the moving time of the reproducing laser beam, the presence or absence of the second recording information is detected based on the reproducing signal obtained from the reproducing means.
- the reproducing means under the control of the determining means, records the disc-shaped information.
- the laser beam is emitted while moving in the radial direction of the recording medium. Therefore, the determination means can more easily detect the presence or absence of the second record information based on the reproduced signal obtained from the reproduction means.
- the determining means determines whether or not the second recording information exists based on the number of recording tracks traversed when the reproducing means moves. Detect presence / absence.
- the determination unit can detect the presence or absence of the second recording information with higher accuracy based on the number of recording tracks traversed when the reproducing unit moves. .
- the reproducing means irradiates, for example, a reproducing laser in a radial direction of the disc-shaped information recording medium in the reproduction frequency limited area, thereby recording the recording track.
- the number is measured.
- the recording track is constituted by, for example, a row strength of recording marks formed by a phase change of the recording layer according to the second recording information.
- the reproducing laser is irradiated.
- the number of recording tracks in the frequency limit area is measured. It should be noted that a small amount of second recording information recorded in a minute area of the reproduction frequency limitation area irradiated with the reproduction laser in the direction perpendicular to the recording track described above, that is, in the radial direction of the disc-shaped information recording medium.
- An example of the aforementioned “minimum information unit” is configured. Then, every time the number of recording tracks is measured, a small amount of the second recording information, that is, the minimum information unit is reproduced and erased at the same time.
- the determining means controls the reproducing means so as to reproduce the second recording information in a predetermined order, and based on a reproduction signal obtained from the reproducing means, controls the reproduction of the second recording information. It may be configured to detect the presence or absence.
- the predetermined order may be a descending order toward a larger address.
- the second record information in a predetermined order that is a descending order in which the sector number indicating the address of the second record information is smaller. Furthermore, if the data is erased, it is possible to detect the presence or absence of the second record information more accurately and quickly. This is because when searching for an address, it is common to search for an address smaller than the target address, and then play back normally to obtain the target address, so that the address size, information unit (for example, 1 ECC block) Etc.) The force is also small in the address, and the force is directed to the information unit. If the information is reproduced in descending order, the second record information recorded in the address smaller than the target address is not always erased.
- the reproduction may erase the second recorded information almost or completely. If the search cannot be performed at the next detection (check), a problem will occur.
- the determining means determines whether or not the reproduction has been completed. The presence or absence of the second record information is detected in the order in which the second record information is performed.
- the reproduction of the first recording information power of the first stage on which the content of the first stage is recorded, which is different from the Nth first recording information power on which the content of the final stage is recorded, is completed. It is determined whether or not the force is applied. That is, it is determined in the order of the first stage, the second stage,..., The final stage whether or not the reproduction is completed.
- the second record information corresponding to the Nth first record information in which the content of the final stage which is not completed to the end is recorded is inadvertently erased by the minimum information unit. Can be prevented beforehand.
- the embodiment according to the information reproducing method of the present invention uses the first and second recording information recorded in the above-described embodiment of the information recording medium of the present invention (including its various aspects).
- An information reproducing method in an information reproducing apparatus including a reproducing unit for reproducing, After the reproduction of the first recording information, a control step of controlling the reproducing means so as to reproduce the second recording information corresponding to the first recording information; and (2) a determination step of detecting the presence / absence of recorded information and determining whether or not the reproduction of the first recorded information corresponding to the second recorded information is completed.
- the embodiment of the information reproducing method of the present invention as in the case of the above-described embodiment of the information recording apparatus of the present invention, for example, a user Alternatively, it is possible to reliably or easily know to which stage the reproduction of the content data has been completed.
- the first recording information cannot be reproduced! / Since the second record information has a reproduction count limit area recorded so that it cannot be reproduced, and the second record information is associated with the first record information, it is determined whether or not the second record information exists. Only by detecting, it is possible to determine whether or not the force has completed the reproduction of the first recording information, and it is possible to determine the progress of reproduction of the entire information recording medium. According to the embodiment of the information reproducing apparatus and method of the present invention, since the reproducing apparatus, the controlling means and the step, and the determining means and the step are provided, only the presence or absence of the second record information is detected. Thus, it is possible to determine whether or not the force has completed the reproduction of the first recording information, and it is possible to determine the progress of the reproduction of the entire information recording medium.
- the information recording medium of the present invention for example, a plurality of pieces of first recording information are recorded in such a manner that they cannot be reproduced with a reproducing operation, respectively.
- An information recording medium having an area and a reproduction count limited area in which a plurality of second recording information are recorded so that reproduction is impossible with a predetermined number of continuous reproduction operations.
- Each of the second record information corresponds to a corresponding one of the plurality of first record information. It contains a plurality of minimum information units that are associated with one another and can be reproduced and erased by a discontinuous reproduction operation! /, So it is only necessary to detect the presence or absence of the second record information.
- each of the plurality of pieces of second recording information is recorded in a partial area as a part of the reproduction count restriction area, Since these partial areas are mutually separated by the read-only area, it is relatively easy to determine whether or not the reproduction of the first record information has been completed simply by detecting the presence or absence of the second record information. This makes it possible to determine the progress of reproduction for the entire information recording medium.
- FIG. 1 shows the basic structure of an optical disc according to an embodiment of the information recording medium of the present invention.
- the upper part is a schematic plan view of an optical disc having a plurality of recording areas, and the lower part corresponding to this is shown in FIG.
- the part is a schematic conceptual diagram of the recording area structure in the radial direction.
- the optical disc 100 is, for example, on a recording surface on a disc body having a diameter of about 12 cm like a DVD, with the center hole 1 as the center and the inner peripheral force directed toward the outer peripheral side.
- a lead-in area 101, a data zone 102, and a lead-out area 103 according to the example are provided.
- tracks 10 such as groove tracks and land tracks are alternately provided spirally or concentrically with the center hole 1 as a center.
- data is divided and recorded in units of ECC blocks 11.
- the ECC block 11 is a data management unit based on a preformat address in which recording information can be corrected for errors. Note that the optical disc 100 of the present invention does not have to have a single-layer structure.
- the optical disc according to the present embodiment is constructed as a hybrid type optical disc having two types of recording areas classified in terms of physical characteristics, more specifically, a reproduction count restriction area 150 and a reproduction only area 160. Being done.
- the recording information (that is, the "second recording information" according to the present invention) is recorded as a recording mark due to, for example, a phase change of the recording layer. It is possible to reproduce the recorded information by irradiating the reproducing laser a plurality of times. At the same time, the recorded information is erased by the reproduction by the irradiation of the reproduction laser once or a limited number of times. Furthermore, it is possible to re-record the recorded information by irradiating the recording laser again after erasing.
- the recording information (that is, the “first recording information” according to the present invention) is recorded as, for example, embossed pits, and the reproduction laser is physically repeated many times. It has the property of a ROM-type optical disc that can reproduce recorded information by irradiation of light.
- the arrangement of the number-of-reproductions-restricted area 150 and the reproduction-only area 160 may be mixed in extremely fine units such as, for example, for each pit or for each ECC block. It may be mixed in an extremely coarse unit such as one closer to the outer peripheral side.
- an area for recording content information such as video information and music information is generally a reproduction-only area 160, and at least a part of an area for recording information for controlling reproduction of the content information is reproduced.
- the number-of-times limit area is 150.
- the reproduction only area 160 is almost or completely eliminated, and almost or completely the reproduction count restriction area 150 is used. It may be.
- the “recording mark” according to the present embodiment is different from the recording mark carrying the recording information whose reproduction number is restricted (that is, the “second recording information” according to the present invention) in the reproduction number restriction area 150.
- information such as NULL data has no meaning, and it includes a "dummy recording mark". is there.
- FIG. 2 is a graph showing a specific example of the reproduction power range, the erasure power range, and the recording power range of the recording layer in the reproduction count restriction area of the optical disc according to the embodiment of the present invention.
- the vertical axis represents the value of the laser power in units of mW (milliwatts)
- the horizontal axis represents the type of laser of the optical disk according to the embodiment (in FIG. Recording laser).
- the recording layer of the optical disk according to the embodiment of the present invention is formed such that the reproduction power range is 0.7 mW or less in principle. Further, the recording layer may be formed so that the reproducing power range is not less than 0.2 mW and not more than 0.7 mW so that the erasing power range and the reproducing power range overlap each other. The recording layer is formed so that the erasing power range is 0.2 mW or more and 1.OmW or less, and the recording power range power is 0.7 mW or more and 2.OmW or less! Puru.
- the reproduction power range and the implementation recommended when reproducing a reproduction-only medium such as a DVD-ROM are recommended. If reproduction is performed by irradiating a laser having a power within a range where the erasing power range according to the example overlaps as a reproduction laser, it is possible to simultaneously erase and erase recorded information. It should be noted that the recorded information may be erased by reproducing the information once or several times.
- the recording layer is changed in phase from an amorphous state in which the reflectance is low and the reflectance is somewhat high to a crystallized state by the irradiation of the reproduction laser from the amorphous state in which the recording mark is formed and the reflectance is low. It becomes possible.
- the reproducing power range and the erasing power range may overlap at a rate of, for example, 50% or more.
- the erasing power range may include the reproducing power range.
- the recording power range of the recording layer of a rewritable information recording medium such as a commercially available DVD-RZW or a write-once information recording medium such as a DV D-R and the optical disc according to the present embodiment are described.
- the recording power ranges of the recording layers of the disks do not overlap. Therefore, it is not possible to record on the optical disk according to the present embodiment by a commercially available rewritable or write-once type information recording medium writer. For this reason, the recording information is re-recorded in a manner not intended by the provider of the optical disk, and unauthorized reproduction exceeding the number of times the restricted answer is reproduced can be prevented.
- the person who collects the optical disk (for example, the provider) can re-record the recorded information by irradiating the recording laser as shown in FIG. 2, and the optical disk can be reused.
- FIG. 3 is a schematic enlarged perspective view of a part of the optical disk according to the embodiment of the present invention, as viewed from the recording surface side force of the optical disk.
- the optical disc 100 includes a substrate 32, a recording layer 30, a reflective layer 31, and a protective layer 33, which are stacked on the substrate 32. Have been.
- a dielectric layer or the like may be disposed above or below the recording layer 30, or a cover substrate or the like may be attached to the lower layer side of the protective layer 33 composed of an adhesive layer or the like. May be
- a groove track G and a land track L are formed by embossing or the like.
- An embossed pit EP and an embossed space ES are formed on the groove track G in the readable embossed area EA.
- the recording mark 20 is formed on the recording layer 30 on the double track G in the reproduction number limitation area 150.
- the recording mark 20 is formed as a pit due to a phase change (a pit blackened by the phase change) by irradiating a recording laser.
- the reflection layer 31 is formed on the recording layer 30 formed on the embossed substrate 32 directly or via a dielectric layer (not shown) or an insulating film, for example, an A1 (aluminum) film or the like. It is.
- the optical disc 100 is configured as a kind of phase change type disc having the recording layer 30 for the reproduction count restriction area 150.
- the recording mark 20 is formed in a part of the recording layer 30, data is recorded so as to be erasable together with reproduction. More specifically, a laser beam is applied to the crystalline recording layer 30 having a high reflectivity, and the recording layer 30 is partially melted. As soon as it is understood, it is rapidly cooled. As a result, the recording layer 30 is partially turned into an amorphous state, whereby the reflectance can be reduced.
- the recording mark 20 is formed on a part of the recording layer 30 in the amorphous state as described above.
- the recording layer 30 in the amorphous state is irradiated with a laser beam, whereby the recording layer 30 is partially melted and slowly cooled. As a result, the recording layer 30 is returned to the crystalline state, so that the reflectance can be largely returned. That is, data can be erased.
- the optical disc 100 has a readable emboss area EA, and is configured as a kind of ROM type disc having an embossed pit EP irrespective of the existence of the recording layer 30.
- a groove track G is formed on the polycarbonate substrate 32 as a guide track for guiding a beam such as a laser beam.
- an area between adjacent groove tracks G is called a land track L.
- the names of the groove track G and the land track L are such that when viewed from the substrate 32 as a base, the concave portion is called a groove track G, and the convex portion is called a land track L. That is, when viewed from the side of the optical pickup (ie, from the upper side in FIG. 3), the group (groove) corresponds to the convex portion, and the land (hill) corresponds to the concave portion.
- the optical disc 100 is configured such that the reproduction count restriction area 150 is configured as a kind of phase change type disc and is connected to the readable emboss area EA which is an example of the reproduction only area. It is configured as a type of type disk, and is configured as a hybrid type disk as a whole.
- the readable emboss area EA may be formed on the same recording layer 30 as the reproduction count restriction area 150, and the same recording film as the reproduction count restriction area 150 may be deposited. . If the recording layer 30 formed in the readable emboss area EA is not recorded by the phase change as described above, the presence of the recording layer 30 has an adverse effect on the reproduction of the embossed pit EP. None.
- the recording layer 30 is also formed in the readable embossed area EA as described above, if the recording layer 30 is formed on the entire surface of the substrate 32, the subsequent partial removal of the recording layer 30 or Since there is no need to perform peeling or the like, it is convenient in manufacturing. Even in this case, at the time of playback, since the mode is equivalent to the erasing mode with a constant light amount, the recording mark 20 is not formed, and there is no problem.
- the groove track G is preferably wobble at a frequency corresponding to the rotation speed of the disc. The wobbled groove track G is formed in advance before the optical disc 100 is shipped, similarly to the land prepit described later.
- the information recording / reproducing apparatus described later extracts the wobbling frequency of the groove track G. By doing so, the rotation of the optical disc 100 may be controlled at a predetermined rotation speed.
- land prepits (not shown) corresponding to the pre-information may be formed on the land track L.
- the land pre-pits are generally formed before the optical disc 100 is shipped. Further, by detecting the land pre-pits, pre-information is obtained in advance, and based on the pre-information, an optimum output of laser light as recording light and the like are set, and on the optical disc 100 on which recording information is to be recorded. The address information and the like indicating the position are obtained, and the recording information is recorded at the corresponding recording position based on the address information.
- FIG. 4 is a schematic structural diagram showing a basic structure of a recording area, a read-only area, and a number-of-times-of-reproduction limiting area of the optical disc according to the embodiment of the present invention.
- the left side in FIG. 4 is the inner side of the optical disk, and the right side in FIG. 4 is the outer side of the optical disk.
- FIG. 5 is an external perspective view showing the direction of track count on the recording surface of the optical disc according to the embodiment of the present invention.
- FIG. 6 is a conceptual diagram showing the state of the second record information recorded in the reproduction count restriction area according to another embodiment of the present invention.
- a lead-in area 101 exists on the innermost side of the recording area, and a data zone 102 exists adjacent to the outer side of the lead-in area 101.
- a lead-out area 103 exists adjacent to the outer peripheral side of the data zone 102.
- control information refers to data that is a main target of reproduction or execution.
- content data such as image data, audio data, and document data, and data for a computer program.
- the control information is information for controlling recording and reproduction to and from the data zone 102, and includes, for example, information indicating the attribute and type of the information recording medium, information for managing the address of data, for example, information on a disk drive or the like.
- the information includes information for controlling the recording and reproducing operations of the recording and reproducing device.
- a control data area 101A is provided on the outer peripheral side inside the lead-in area 101.
- the control data area 101A is an area for recording control information for controlling recording and reading on the data zone 102.
- the data zone 102 is a main area for recording data. More specifically, the inner peripheral side force inside the data zone 102 is also directed to the outer peripheral side, and the file management information recording area 102A, the first data zone and the first band zone, the second data zone and the second band zone,. In addition, an Nth data zone and an Nth band zone are provided.
- the file management information recording area 102A for example, space bitmap information indicating a recorded or unrecorded state for each logical or physical block of the file system or the recording area is recorded. The first data zone and the first band zone, the second data zone and the second band zone,..., The Nth data zone and the Nth band zone will be described later.
- control information, management information, and data recorded on the information recording medium described above cannot always be clearly distinguished according to their contents.
- control information and management information are mainly used directly for controlling the operation of an information recording / reproducing device such as a disk drive, whereas data is mainly used for information recording / reproducing in an information recording / reproducing device.
- This data is only data to be processed, and is mainly used for, for example, data reproduction processing of a back end or a host computer, or program execution processing.
- data is recorded in the data zone 102, and control information and management information are stored in the control data area 101A, the lead-out area 103, or the data zone 102 in the lead-in area 101. Recorded in file management information recording area 102A.
- the file management information recording area 102A inside the data zone 102, the lead-in area For example, all the areas inside the lead-out area 103 and the lead-out area 103 are configured as a read-only area 160 in which embossed pits are formed, and these areas constitute an example of the “first recording information” according to the present invention. User data, etc. are recorded.
- the region from the first band zone 150-1 to the Nth band zone 150—N inside the data zone 102 is, for example, the reproduction frequency limit region 150 where the recording mark is formed. It is configured as In the region from the first band zone 150-1 to the N-th band zone 150-N, the first band 50-1 which constitutes an example of the "second recording information" according to the present invention also has the N-th band 50-N (Where N is a natural number of 2 or more) is recorded by forming a recording mark on the recording layer.
- the first band 50-1 to the N-th band 50-N may be, for example, dummy recording information having no information such as NULL data.
- data recording information for displaying characters and patterns and image information such as a diploma / clear screen on a display and reproducing music may be used.
- the first band 50-1 to the N-th band 50-N can be deleted, for example, at the same time as the music is played, thus saving time.
- the area N is configured, for example, as a read-only area 160 in which embossed pits are formed.
- the first data 60-1 to the N-th data 60- which constitute an example of the "first recording information" according to the present invention, are provided.
- N is recorded by forming embossed pits.
- the first data 60-1 to the N-th data 60-N may be content data adapted to learning stages such as, for example, beginner, intermediate, and advanced.
- content data corresponding to a hierarchical level such as the first, second,..., Nth stage may be used.
- the first band 50-1 to the N-th band 50-N recorded in the region from the first band zone 150-1 to the N-th band zone 150-N are respectively It is logically or physically associated with the corresponding one of 1 data 60-1 to N-th data 60-N.
- the logical association means, for example, in reproducing and recording, for example, a data zone (160-1 etc.) in which data (60-1 etc.) is recorded and a zone corresponding to these data. This means that the area of the band zone (150-1 etc.) where the band (50-1 etc.) is recorded is related based on the logical address assigned to both areas.
- the identification numbers of the first data zone 160-1 to the Nth data zone 160-N and their respective addresses are registered in the registered table management information or the like.
- the identification numbers of the first band zone 150-1 to the Nth band zone 150-N and their respective addresses are registered in the registered table management information and the like. Therefore, the first band zone 150-1 to the Nth band zone 150-N where the first band 50-1 to the Nth band 50-N are recorded are the first data 60-1 to the Nth data 60, respectively. It is possible to logically associate the first data zone 160-1 in which -N is recorded with the corresponding one of the Nth data zone 160-N.
- the physical association means, during reproduction and recording, an area of a data zone in which one of a plurality of data is recorded, and an area of a band zone in which a band corresponding to the data is recorded. Is related based on the physical structure of the recording area.
- the first band zone 150-1 is defined as the first band zone 150-1 before or after the start of the first data zone 160-1, and is defined before or at the end of the second data zone 160-2. After the start of the Nth data zone 160-N or after the end of the Nth data zone 160-N is the Nth band zone 150-N. If a band zone is specified according to the rules, a data zone physically corresponding to the band zone can be specified. Therefore, the first band 50-1 to the N-th band 50-N can be physically associated with the corresponding one of the first data 60-1 to the N-th data 60-N, respectively. Become.
- each of the plurality of bands (50-1, etc.) includes a plurality of minimum information units that can be reproduced and erased by a discontinuous reproduction operation.
- the “discontinuous playback operation” refers to an operation of performing playback while the playback laser light moves in a direction perpendicular to the track.
- the “minimum information unit” refers to a small-sized constituent unit of a plurality of bands (50-1, etc.) that can be reproduced and erased. More specifically, as shown in FIG. 5, the reproducing laser does not irradiate the reproducing laser along the tangential direction of the track, but in a direction perpendicular to the track, that is, in the radial direction of the optical disc 100.
- a small amount of the first band 50-1 recorded in a minute area of the first band zone 150-1 is irradiated. Then, every time the "number of recording tracks" according to the present invention is measured, this minimum information unit is reproduced and erased at the same time.
- the information recording medium is configured as described above, a plurality of data
- the band associated with this data! /, (50-1 etc.) becomes unplayable due to the continuous playback operation. In other words, it is erased at the same time as playback.
- the first data 60-1 recorded in the first data zone which is the content data of the first stage of a game for a personal computer for home use
- the first data 60-1 is logically added to the first data 60-1.
- the physically associated first band 50-1 recorded in the first band zone is rendered unreproducible due to continuous playback operation.
- the first band 50-1 includes a plurality of minimum information units that can be reproduced and erased by a non-continuous reproduction operation.
- the non-continuous reproduction operation of the first band 50-1 due to the non-continuous reproduction operation of the first band 50-1, only a small amount of the first band 50-1 recorded in the first band zone 150-1, that is, the smallest information unit cannot be reproduced, The absence of band 50-1 is detected.
- the minimum information unit of the second band 50-2 recorded in the second band zone 150-2 is reproduced by a discontinuous reproduction operation such as a track jump, so that the second band 50-2 is reproduced.
- the presence of 2 is detected. This makes it possible to determine that the reproduction of the second data 60-2, which is the content data of the second stage, for example, recorded in the area of the second data zone 1602 is not completed.
- reproduction power of the second data 60-2 which is the content data of the second stage
- reproduction processing can be performed up to the N-th data 60-N, which is the content data of the N-th stage.
- the presence or absence of the first band 50-1 to the N-th band 50-N detected at the time of reproduction of the optical disc 100 is determined by the first data 60-1 to the N-th data 60-N. Plays the role of a binarized flag indicating whether or not the reproduction has been completed. Therefore, the information reproducing apparatus can relatively easily detect or judge whether or not the reproduction has been completed in the first data 60-1 to the N-th data 60-N while limiting the number of times of reproduction. And Therefore, for example, the user can reliably or easily determine at what level or to what stage the reproduction of the content data has been completed.
- the first band zone 150—1 to the Nth band zone 150-N in which the 1st to the Nth band 50-N are recorded are basically the reproduction of the 1st data 60-1 to the Nth data 60—N. In accordance with the order, for example, they may be alternately arranged on the inner peripheral side and the outer peripheral side based on temporal and spatial locality in the operation of the optical pickup or the like.
- the possibility that the stage is not completed is closer to the N-th data 60-N, which is high until the end of the reproduction of the optical disc 100, and is closer to the N-th data 60-N. Opportunities are reduced. Therefore, by irradiating the reproduction laser beam unnecessarily to the N-th data 60-N and the N-th band 50N and the data close to the N-th data, which are highly likely to be incomplete, the optical disc 100 It is possible to prevent the N-th data 60-N and the N-th band 50-N and data close thereto from being used up as flags before the reproduction of the data is completed. However, they can be arranged arbitrarily according to the use or purpose of the first data 601 to the N-th data 60-N.
- the first band zone 150-1 to the Nth band zone 150-N are, for example, 10 tracks or the like. Na, it's better! / ,.
- the information is recorded in the reproduction number limitation area 150 by a reproduction means such as an optical pickup and a determination means such as a CPU described later in a discontinuous reproduction operation.
- a reproduction means such as an optical pickup and a determination means such as a CPU described later in a discontinuous reproduction operation.
- the power to detect (check) the presence or absence of the second recording information such as the first band 50-1 is used.
- the address is reproduced in descending order of the address from the information unit (for example, one ECC block) to the information unit, and the presence or absence of the second recording information can be detected based on the reproduced signal. More specifically, when detecting (checking) the first second information unit, the information unit indicated by “circle (1)” in FIG. 6 is searched to detect the presence or absence of the second record information.
- the second information unit when the second information unit is detected (checked), the presence or absence of the second recorded information is detected by searching the information unit indicated by "circle (2)" in FIG. It is desirable.
- searching for an address it is common to search for an address that is smaller than the target address and then reproduce it normally to obtain the target address. This is because if the reproduction is performed in descending order of the information unit, the second recording information recorded at the address will not be erased, and will not be erased. Conversely, if the information units are detected (checked) in ascending order from the information unit with the lower address to the information unit with the higher address, the second recorded information is almost completely reproduced by the reproduction. If the search cannot be performed at the next detection (check), a problem will occur.
- FIG. 7 is a block diagram showing the overall configuration of the optical disc information reproducing apparatus according to the embodiment of the present invention.
- the information reproducing apparatus 200 includes an optical disc 100, an optical pickup 202, a spindle motor 203, a head amplifier 204, a sum generation circuit 210, a pit data demodulation circuit 211, and a pit which constitute an example of the “reproducing means” according to the present invention.
- the data correction circuit 212, the buffer 213, the interface 214, the push-pull signal generation circuit 220, the low-pass filter 221, the servo unit 222, and the CPU that constitutes an example of the "control means” and “determination means” according to the present invention. (Central Processing Unit) 300.
- the optical disc 100 On the optical disc 100, pit data DP synchronized with the first clock signal CK1 is recorded according to the length of the recording mark 20.
- the first clock signal CK1 of the RF reproduction signal component is, as described in the above-described various embodiments of the optical disk 100, the RF reproduction signal component of the optical disk 100 that fluctuates at a substantially constant cycle in accordance with wobbling or unreadable embossing. Therefore, the signal is a signal that can be generated by the information reproducing apparatus 200, and is generated by the pit data demodulation circuit 211 in the present embodiment.
- the recording mark 20 can be interpreted as a pit, and the track is constituted by this pit row.
- the information reproducing apparatus 200 includes an optical pickup 202 that irradiates the optical disc 100 with a reproducing beam and outputs a signal corresponding to the reflected light, and a spindle motor 203 that controls the rotation of the optical disc 100. And a servo unit 222.
- the first clock signal CK1 and the pit synchronization signal SYNCp are supplied to the servo cut 222.
- the servo unit 222 executes a spindle servo for controlling the rotation of the spindle motor 203 and a focus servo and a tracking servo for controlling the relative position of the optical pickup 202 with respect to the optical disc 100 in synchronization with these signals.
- the optical pickup 202 includes a laser diode for irradiating a reproduction beam and a quadrant detection circuit (not shown).
- the quadrant detection circuit shows the reflected light of the reproduction beam in the upper part of Fig. 7. It divides into 4 areas, 1A, 1B, 1C, and ID, and outputs signals according to the light intensity of each area.
- the head amplifier 204 amplifies each output signal of the optical pickup 202, and outputs the divided read signal la corresponding to the area 1A, the divided read signal lb corresponding to the area IB, the divided read signal lc corresponding to the area 1C, and the area. Outputs divided read signal Id corresponding to 1D.
- the sum generation circuit 210 adds the divided read signals la, lb, lc, and Id and generates an addition circuit that outputs the sum read signal SRF.
- the total reading signal SRF is a signal indicating the length of the recording mark.
- the pit data demodulation circuit 211 reproduces the pit data DP based on the total read signal SRF and generates the first clock signal CK1. More specifically, the pit data demodulation circuit 211 generates reproduced data by demodulating the reproduced pit data DP using a predetermined table, using the pit synchronization signal SYNCp as a reference position. For example, when EFM modulation is adopted as a modulation method, a process of converting 14-bit pit data DP into 8-bit reproduction data is performed. Then, a descrambling process for rearranging the order of the reproduction data according to a predetermined rule is executed, and the processed reproduction data is output.
- the reproduced data thus obtained is supplied to the pit data correction circuit 212, where it is subjected to error correction processing, interpolation processing, and the like, and then stored in the buffer 213.
- the interface 214 sequentially reads the data stored in the buffer 213, converts the data into a predetermined output format, and outputs it to an external device.
- the push-pull signal generation circuit 220 calculates (la + ld)-(lb + lc) to generate a push-pull signal.
- the component (la + ld) corresponds to the areas 1A and 1D on the left side in the reading direction, while the component (lb + lc) corresponds to the areas 1B and 1C on the right side in the reading direction.
- the value of the push-pull signal indicates the relative positional relationship between the reproduction beam and the pit.
- the push-pull signal is output to the servo unit 222 via the low-pass filter 221.
- the servo unit 222 performs tracking control based on the push-pull signal.
- the CPU 300 is connected via a bus or the like (not shown), and controls the entire information reproducing apparatus 200 by giving an instruction to each circuit or means. Normally, software for operating the CPU 300 is stored in a memory (not shown) or the like. (Flow of Reproduction Operation by Information Reproduction Apparatus)
- FIG. 8 is a flowchart showing a reproducing operation of the optical disc by the information reproducing apparatus according to the embodiment of the present invention.
- optical disc such as DVD-Video, DVD-ROM, DVD-R or DVD-RW is determined (step S100).
- the optical disk according to the embodiment of the present invention in the DVD format (video) is inserted.
- step S 11 it is determined whether or not it is possible to recognize the recorded information or the like.
- step S110 Yes
- step S1 the control data is read, and the basic information necessary for the reproducing operation is read (step S1).
- step S110 determines whether record information or the like cannot be recognized.
- Step S110: No the reproducing operation by the information reproducing apparatus ends.
- the file system also reads the file management information recording area (step S130).
- step S150 it is determined whether or not the variable “n” is larger than a constant “N” (step S150), where the constant “N” is a natural number.
- the measurement hereinafter referred to as Track Count (TC) as appropriate determines whether or not the first band has been recorded in the first band zone, that is, the track count recorded in the first band zone. It is detected whether or not the force has a predetermined number (step S160).
- step S160 if a certain number of tracks exist (step S160: Yes), since the first band is recorded in the first band zone, the first data of the first data logically or physically associated with the first band is recorded. Since the playback has not been completed, it is determined whether the first data should be played or not. Is performed (step S170). Specifically, when the game is applied to a disc on which a game for a personal computer for home use is recorded, it is determined whether the first data, which is the content data corresponding to the hierarchical level of the first stage, should be reproduced. Here, if the first data should be reproduced (step S170: Yes), the reproduction of the first data is started (step S180).
- Step S190 it is determined whether the reproduction of the first data is completed or not.
- Step S190: Yes when the reproduction of the first data is completed (Step S190: Yes), the first band recorded in the first band zone logically or physically associated with the first data is reproduced, and at the same time. It is deleted (step S200).
- step S170 determines whether or not the disc should be ejected.
- Step S210 a series of reproducing operations by the information reproducing apparatus ends.
- step S 160 No
- step S210 if the disc should not be ejected (step S210: No), the variable "n" is incremented by "1" and incremented to perform track counting for the next band. (Step S220).
- step S150 it is determined whether or not the force at which the variable “n” becomes larger than the constant “N” is determined.
- step S150: No the processing from step S160 is repeated.
- step S150: Yes the variable “n” is larger than the constant “N” (step S150: Yes)
- step S150: Yes a series of reproducing operations by the information reproducing device ends.
- the present invention is not limited to the embodiments described above, and may be modified as appropriate without departing from the spirit or spirit of the readable invention.
- the medium, the information reproducing apparatus and the method are also included in the technical scope of the present invention.
- the information recording medium, the information reproducing apparatus and the method according to the present invention provide an information recording medium such as an optical disk which can be recorded and reproduced by irradiating a laser beam, and a method for reproducing such an information recording medium.
- the present invention can be used for an information reproducing apparatus and method.
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Abstract
Description
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JP2005517766A JPWO2005076261A1 (ja) | 2004-02-09 | 2005-02-07 | 情報記録媒体、情報再生装置及び方法 |
US10/588,764 US20090003157A1 (en) | 2004-02-09 | 2005-02-07 | Information Recording Medium, and Information Reproducing Apparatus and Method |
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JPH11312363A (ja) * | 1998-04-28 | 1999-11-09 | Sony Corp | 光記録媒体および光記録装置 |
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US5473584A (en) * | 1992-01-29 | 1995-12-05 | Matsushita Electric Industrial Co., Ltd. | Recording and reproducing apparatus |
JP2783941B2 (ja) * | 1992-05-29 | 1998-08-06 | 三洋電機株式会社 | 音声データダビング制御回路 |
TW401573B (en) * | 1997-01-10 | 2000-08-11 | Victor Company Of Japan | Methods, apparatuse, and systems for producing and writing cipher keys, reproducing information with a cipher key, and for permitting reproduction of information with a cipher key, and optical disc recorded with a cipher key |
JP2000276834A (ja) * | 1999-03-19 | 2000-10-06 | Sony Corp | 記録装置、再生装置、記録再生システム、及びダビング動作管理方法 |
US6973016B2 (en) * | 2000-03-13 | 2005-12-06 | Matsushita Electric Industrial Co., Ltd. | Information recording/reproduction method and apparatus incorporating temperature based recording/reproduction conditions |
WO2002039434A1 (fr) * | 2000-11-07 | 2002-05-16 | Matsushita Electric Industrial Co., Ltd. | Disque optique, dispositif d'enregistrement pour disque optique, dispositif de reproduction pour disque optique, procede de reproduction de disque optique et procede de production de disque optique |
US20040151098A1 (en) * | 2001-04-04 | 2004-08-05 | Hideki Nagano | Data carrier, its manufacturing method, reproduction control method, and drive |
JP4880140B2 (ja) * | 2001-09-07 | 2012-02-22 | 任天堂株式会社 | 光ディスクならびに光ディスク再生装置および記録装置 |
JP3888353B2 (ja) * | 2004-01-07 | 2007-02-28 | ソニー株式会社 | データ編集装置及びデータ編集方法 |
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2005
- 2005-02-07 JP JP2005517766A patent/JPWO2005076261A1/ja active Pending
- 2005-02-07 WO PCT/JP2005/001754 patent/WO2005076261A1/ja active Application Filing
- 2005-02-07 US US10/588,764 patent/US20090003157A1/en not_active Abandoned
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JPH11312363A (ja) * | 1998-04-28 | 1999-11-09 | Sony Corp | 光記録媒体および光記録装置 |
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