Abstract: A relationship between a length of a pixel formed by an image drawing operation along a disk circumferential direction, and a length of a pit formed by an data recording operation along the disk circumferential direction is set in such a manner that a plurality of pits are entered to the length of 1 pixel along the disk circumferential direction. While one pixel is being drawn by employing the image drawing beam, within such a section that the power of the data recording beam becomes recording power in order to form the pit, the power of the image drawing beam is temporarily lowered to such a power which does not change the visible light characteristic of the image drawing layer.

Abstract: A method of determining a recording power used to record information to an optical disc, includes carrying out test recording which records predetermined data to a predetermined area of the optical disc to determine the recording power, and recording predetermined data with a power equal to or more than the determined recording power to an area adjacent to the predetermined area.

Abstract: The present invention relates to a method of maintaining an optimal writing power for various recording modes during data recording onto a recording medium. The present method checks a recording speed at a recording position, reads a write strategy set for the checked recording speed, detects a reflected level while recording data with the read write strategy, and changes a level reference for ROPC according to the detected level. Accordingly, a writing power can be kept most optimal even though a recording speed changes during data recording, thereby improving the quality of reproduced signals.

Abstract: A method of recording information using a laser on a multilayer optical disk having a plurality of recording layers is provided. The plurality of recording layers include a first recording layer and a second recording layer adjacent the first recording layer. The first recording layer is provided with a first test writing area to be used for calibration of write power, and the second recording layer is provided with a second test writing area to be used for calibration of write power. The disk is arranged so that a first region of the first test writing area is superposed with a second region of the second test writing area when considered in the direction in which the laser is arranged to irradiate.

Abstract: In an exemplary embodiment of the present invention, after test write is performed with a predetermined test power to a first track on an optical disk, test write is performed with the same test power as the first track to a second track adjacent to the first track. Then, reproduction signals are obtained by reproducing the first track and the second track respectively, and a determination whether or not the test power is set to a recording laser power in recording main information is made based on a relationship between the obtained reproduction signals.

Abstract: An object of the present invention is to provide an optical recording/reproducing apparatus capable of improving medium usability through a laser power adjusting process while keeping compatibility with a read only type medium. The optical recording/reproducing apparatus adjusts laser power using a PCA till the PCA is used up. After the PCA is used up, an additional area is reserved at the outermost circumference position, thereafter when the additional area is used up, a new additional area is reserved at an inner circumference side of the used up additional area to adjust laser power. The additional area is reserved at an outer circumference than a lead-out area, and therefore format compatibility with a read only type optical disc can be maintained. The additional area is reserved only when the PCA is used up, thus capacity compatibility with a read only type optical disc can be maintained while laser power is adjusted with only the PCA.

Abstract: A writable optical record carrier comprising a plurality of recording layers L0, . . . , Ln?1 separated by a spacer material, each recording layer comprising an optimum power calibration area having a first portion with an average reflection value representative of a recorded layer and a second portion with an average reflection value representative of an unrecorded layer, a method, and an apparatus for forming optimum power calibration areas on such a writable optical record carrier are presented. The optimum power calibration areas partially overlap such that the optimum power calibration areas of each pair of consecutive recording layers form a step, and the first portions of said plurality of recording layers have the form of a staircase. Each step formed by a pair of consecutive recording layers k, k+1 has a preferred minimum step size.

Abstract: A method and apparatus to record data on an optical recording medium include generating a recording waveform having an erase pattern comprising a predetermined pulse having a high level which is higher than an erase power level and having a low level which is lower than the erase power level.

Abstract: A recording pulse condition for obtaining a reproduction result which fulfills predetermined signal quality is sought by performing testwrite and reproduction after uniformly changing predetermined recording pulse conditions corresponding to all mark lengths (S1, S2). If good result is not obtained, a recording pulse condition for obtaining a reproduction result which fulfills predetermined signal quality is sought by performing testwrite and reproduction after changing a predetermined recording pulse condition corresponding to at least one mark length (S4, S5). Then, a recording pulse condition is determined (S3). Thus provided are method and apparatus for efficiently setting such a recording condition that can reduce the influence of difference in characteristics of writable optical disks and difference in characteristics of optical recording and reproducing apparatuses, and to provide a recording and reproducing apparatus.

Abstract: An information storage medium on which data is recorded after performing optimum power control (OPC) and a method and apparatus to record/reproduce data on/from the information storage medium, wherein the recordable information storage medium has a plurality of recording layers and a pickup irradiates a beam onto the information storage medium, utilize operations of: recording data on at least a portion of a recording layer through which a test beam to find an optimum recording power passes before performing optimum power control (OPC) on a desired recording layer and performing OPC on the desired recording layer. The method and apparatus allow data to be recorded after performing a test to determine an optimum recording power, thus providing effective recording/reproducing quality.

Abstract: An optical disc has spatial features (notches, bumps, etc.) that intentionally distort the analog Read Data signal. For a mark or space that is centered on a spatial feature, the distortion does not affect the resulting binary Read Data signal. If an edge of a mark or space is near the spatial feature, the resulting binary Read Data signal is altered. For calibration, marks or spaces are written adjacent to spatial features, with a range of times for initiating the writes. The result is a range of write times that do not alter the binary Read Data signal. From these known times and spatial locations, it is known when a mark or space must be written to ensure accurate spatial placement.

Abstract: An information storage medium and an apparatus for recording and/or reproducing the information storage medium capable of controlling optimal recording power without an influence of an optimal power control (OPC) area in a layer upon an OPC area in a different layer. The information storage medium includes at least one information storage layer including an optimal power control area for obtaining an optical recording condition. OPC areas in adjacent information storage layers are disposed within different radiuses of the information storage medium. Accordingly, even when the information storage medium is made eccentric or has a manufacturing error, a recording property of the information storage medium is prevented from being degraded due to an influence of an OPC area in an information storage layer upon an OPC area in an adjacent information storage layer.

Abstract: The object of the present invention is to provide an optical recording method for recording data in an optical recording medium, which can reduce jitter of a reproduced signal even in the case where data are recorded at a plurality of linear recording velocities. The optical recording method according to the present invention can record data at a plurality of linear recording velocities or a continuously changing linear recording velocity and a recording waveform for modulating a recording beam includes a direct current section and a recording pulse section. Data are recorded so that the intensity Pbi of the direct current section and the intensity Pw of the recording pulse section satisfy PbiH/PbiL<1 and (PbiH/PwH)/(PbiL/PwL)<1 where PwL and PbiL are Pw and Pbi when data are to be recorded at a linear recording velocity VL and PwH and PbiH are Pw and Pbi when data are to be recorded at a linear recording velocity VH higher than the linear recording velocity VL and satisfying 1.1?VH/VL.

Abstract: An information recording/reproducing apparatus includes a use condition determination part that reproduces a specific area on a rewritable recording medium and determines whether an unused area exists. A recording linear velocity changing part changes a recording linear velocity in a radial direction of the medium. A recording clock cycle changing part changes a recording clock cycle in accordance with a change in the velocity. A test writing part performs test writing with a different recording power for each step. An optimum recording power determination part reproduces test-written information and determines an optimum recording power for a recording linear velocity in test writing based on a characteristic value of a reproduction signal. When the unused area exists, test writing is performed thereon at a recording linear velocity the same as that in recording, the optimum recording power for the area is determined, and information is recorded with the optimum recording power.

Abstract: A method and apparatus for processing information, method and apparatus for manufacturing an information recording medium, an information recording medium, and a computer program are provided. An information processing apparatus for playing back a content recorded on an information recording medium and includes a data transform processor performing a substitution process on content member data recorded on the information recording medium. The data transform processor substitutes transform data as substitute data for the content member data in accordance with a fix-up table holding recording position information of the transform data.

Abstract: An information storage medium having a plurality of information storage layers, each of which includes an optimal power control (OPC) area for obtaining an optimal recording condition, wherein OPC areas in odd-numbered and even-numbered information storage layers are disposed not to face each other and not to contact each other, or partially overlap each other and lock out use of the overlapped portion. Therefore, when an OPC area of one information storage layer performs OPC, this OPC does not affect another information storage layer.

Abstract: A method for formatting a phase-change optical disk, using an apparatus for formatting phase-change optical disk, which apparatus includes (a) a drive control substrate on which a CPU for controlling an optical disk drive, a ROM for storing data, and an interface are mounted, and (b) an optical disk drive, is provided, and the method is carried out conducting power calibration a plurality of times to obtain a plurality of recording powers corresponding to the number of the power calibrations conducted, calculating an average recording power from the plurality of recording powers, multiplying the average recording power by a predetermined coefficient to obtain a recording power for formatting, and formatting a phase-change optical disk in accordance with the recording power for formatting. The phase-change optical disk formatted by this method is also provided.

Abstract: An information storage medium having a plurality of information storage layers, each of which includes an optimal power control (OPC) area for obtaining an optimal recording condition, wherein OPC areas in odd-numbered and even-numbered information storage layers are disposed not to face each other and not to contact each other, or partially overlap each other and lock out use of the overlapped portion. Therefore, when an OPC area of one information storage layer performs OPC, this OPC does not affect another information storage layer.

Abstract: Provided is an optical disc device in which adjustment precision of recording laser power is improved without complication of a processing sequence during recording operation. In response to a recording start instruction, OPC is executed using an inner disc drive zone to set an initial value of recording laser power Pws. Then, when a recording instruction REC(1) is issued, recording is successively performed from the head of a data area using the laser power Pws. After that, when an intermittent standby period T is set, sample data is recorded at the number of times corresponding to the intermittent standby period T in a next recording position, and R-OPC is executed. Therefore, the recording laser power Pws is set again. Then, when a second recording instruction REC(2) is issued, recording is successively performed from a next recording position, that is, a position next to an end portion of data recorded by the first recording instruction REC(1) using the reset laser power Pws.

Abstract: An information storage medium having a plurality of information storage layers, each of which includes an optimal power control (OPC) area for obtaining an optimal recording condition. Optimal power control areas in odd-numbered and even-numbered information storage layers viewed from a direction in which light is incident upon the information storage medium are disposed one on another to not directly face each other. An actually usable area of an optimal power control area in each of the information storage layers varies depending on use circumstances of each of the information storage layers. Therefore, when an OPC area of one information storage layer performs OPC, this OPC does not affect another information storage layer. Also, an area of each of the information storage layers can be efficiently used.

Abstract: A method of recording data on an optical disc including a preceding recording layer and a following recording layer capable of having data recorded thereon. The method includes recording data on the preceding recording layer, assigning a weight, to which a difference in recording sensitivities of the preceding and following recording layers of the optical disc is applied, to an OPC (Optimum Power Calibration or Optimum Power Control) recording power of the following recording layer, and determining a starting recording power of the following recording layer, such that data is recorded in the following recording layer, and applying a laser beam having a specific power equal to the starting recording power of the following recording layer to the following recording layer, and recording data on the following recording layer.

Abstract: A method, an optical disk drive and a calibration system for modifying a 2T write strategy to improve recording quality. The method includes driving the optical disk drive for burning a test odd mark and a test even mark on an optical disk, detecting signal waveforms associated with the test odd mark and the test even mark, adjusting a plurality of writing periods used for forming an even mark according to the signal waveform of the test even mark, and adjusting a plurality of writing periods used for forming an odd mark according to the signal waveform of the test odd mark without utilizing the adjusted writing periods for the even mark.

Abstract: Optical pick-up units and laser drivers are disclosed, which can be used in various types of information recording/reproducing apparatuses, such as, but not limited to, DVD and CD drives, DVD camcorders, and DVD video recorders. A laser driver integrated circuit (LDIC) includes an automatic power controller, a running optical power controller, and a write strategy generator. The LDIC can be part of a chip-set, to be located on an optical pick-up unit (OPU). The chip-set can also include a power monitor integrated circuit (PMIC) to monitor the laser diode, and a photo-detector integrated circuit (PDIC) to detect light produced by the laser diode. The PMIC and the PDIC each include their own offset, gain and sample-and-hold circuitry.

Abstract: A method of determining the time for executing optimal power calibration in an optical drive. First, relationships between values of a driving signal and ambient temperatures of the optical drive are recorded in look up table in a memory. According to the look up table, mappings from the values of a driving signal output by a compensator to the ambient temperature of the optical drive can be obtained. When the ambient temperature of the optical drive is higher than a predetermined temperature, an optimal power calibration is executed.

Abstract: Disclosed is an optical disk recording and reproducing apparatus and a method for determining an optimal power of a laser beam. The present invention performs recording tests using combination tables, which are formed with a combination of values of parameters for determining an optimal laser beam power. An optimal power parameter is calculated using the combinations not included in the combination tables based on results of the recording tests, to thereby quickly determine optimal parameter values.

Abstract: A power control process in which an inner region optimum power control (“OPC”) value of an inner region of an optical disc is measured at a base speed is selectively performed. A predicted outer region OPC value is calculated based upon the inner region OPC value, a reference laser power associated with the base speed and a desired maximum speed. The predicted outer region OPC value is compared with a laser power limit, and whether to measure an outer region OPC value on an outer region of the optical disc at a desired maximum speed is determined.

Abstract: A CD-R/RW drive (optical storage carrier player) includes an access device for writing data on a CD (optical storage carrier). The CD includes a central portion, an inner power calibration area which can provide the optical power calibration 100 times, a data storage area for data writing by a user and a last possible lead-out area, in order from CD center to CD outer edge. The method is to define an outer power calibration area in the last possible lead-out area to perform optical power calibration in this outer power calibration area such that the total number of optical power calibrations for the CD can exceed 100.

Abstract: Method for controlling a laser power used in recording on an optical disk includes: causing the laser to emit a test light emission pattern including a multipulse light emission interval and an at-bottom value continuous light emission interval; receiving the test light emission pattern of the laser to convert the pattern to an electric signal and to thereby obtain a light detection signal; calculating a detection value of a multipulse average value from the average value of the light detection signal, and calculating a bottom detection value from the light detection signal to obtain a light emission power characteristic of the laser on a supplied current based on the detection value of the multipulse average value and the bottom detection value; and controlling the current supplied to the laser based on the light emission power characteristic on the current supplied to the laser.

Abstract: A write power adjustment method and optical read/write apparatus for accurate optimum write power setup. Different levels of write power Pwm are used to perform a test write and calculate a modulation Mm corresponding to each level of write power Pwm. Different write power compensated values Pcn are used to calculate an evaluated value Smn=Mm×(Pwm?Pcn). Pcn that maximizes the linearity of the relationship between compensated write power (Pwm?Pcn) and evaluated value Smn is determined as an optimum write power compensated value PcO. Compensated write power PthO that provides a modulation of zero, that is, an evaluated value SmO of zero, when the relationship between compensated write power (Pwm?PcO) for PcO and evaluated value SmO is subjected to linear approximation is determined. PthO and optimum write power compensated value PcO are used to calculate a write power threshold Pth=PthO+PcO. A predetermined calculation is performed on Pth to determine optimum write power Popt.

Abstract: A method is described for setting an optimum recording power level for recording information on an optical record carrier. First a series of test patterns is written on the record carrier with a different recording power. On reading the test patterns, the jitter values of each read signal is determined. The jitter as a function of recording power is approximated with two linear functions. The optimum recording power level for the record carrier is derived from intersection of the functions. The invention relates also to a device arranged to perform the method. The invention further relates to an optical record carrier comprising the optimum recording power as determined by the method according to the invention.

Abstract: An optical information recording apparatus can maintain a stable recording quality when recording information on an optical information recording medium having a recording layer of a multilayer structure. An optical information recording medium of a rotating type has a plurality of recording layers each having an information recording area in which information is recorded using a laser beam. An inner power calibration area is provided in each of the recording layers at a location closer to a center of rotation of the optical information recording medium than the information recording area, and is used to perform a test write in an optimum power control process to acquire an optimum recording power of the laser beam. The outer power calibration area is provided at a location farther from the center of rotation than the information recording area, and is used to perform a test write in an optimum power control process to acquire an optimum recording power of the laser beam.

Abstract: An optical disk apparatus is disclosed which makes accesses on a block-by-block basis to an optical disk having a recording track segmented into first recording areas by first address information correlated with wobbling information of the recording track, the block being a unit for error correction consisting of a plurality of the first recording areas. The optical disk apparatus comprises an access control unit which, when an access is made to a second recording area consisting of a plurality of the first recording areas, provides access control in sequence without applying any data modulation and/or demodulation process to each of the plurality of first recording areas constituting the second recording area.

Abstract: A laser power control apparatus for controlling the output power of a semiconductor laser used to record and reproduce data in and from a recording medium is provided. The laser power control apparatus includes a controller configured to vary the peak output power level of the semiconductor laser in a stepwise manner, calculate a differential efficiency at each of the varied peak output power levels, and determine a laser driving current based on a relation between the differential efficiency and the peak output power level. In addition, a laser driving unit is configured to drive the semiconductor laser using the laser driving current determined by the controller.

Abstract: In a spherical aberration correcting apparatus, a test recording unit is configured to perform a test recording on an optical disk. A characteristic obtaining unit is configured to obtain a characteristic corresponding to a parameter by the test recording. The parameter is correlated with a spherical aberration. A correction amount deciding unit is configured to decide an optimum correction amount of the spherical aberration so as to minimize the spherical aberration according to the characteristic of the parameter. A spherical aberration correcting unit is configured to correct the spherical aberration according to the optimum correction amount of the spherical aberration.

Abstract: An information recording method where different optimum recording power levels are determined for different mark lengths. At a first trial writing process, first predetermined test data, from which a specific pattern, e.g., 3T is removed, are written with recording power levels being shifted, and a first optimum recording power level is determined based on a reproduction signal of the recorded first test data. Then, at a second trial writing process, second predetermined test data that are constituted by 3T marks are written with the recording power level for the 3T marks being shifted, and with the recording power level for marks other than the 3T marks being set at the first optimum recording level, and a second optimum recording power level for the 3T marks is determined based on a reproduction signal of the recorded second test data.

Abstract: There provided an optical disk recording/reproducing method and an apparatus thereof capable of constantly forming an optimum mark region while appropriately correcting recording conditions. A sample hold circuit 6 detects and holds the level of a TPP signal to output a state monitoring signal. A reference level setting portion 8 holds the level of the state monitoring signal at which an optimum recording state is obtained and outputs a reference level signal. A recording state determining portion 7 outputs a record shortage signal and a record surplus signal based on the result of comparison between the reference level signal and the state monitoring signal. An LD output correcting portion 9 outputs an LD output correcting signal based on the record shortage signal and the record surplus signal as well as a record data signal.

Abstract: An optical disc apparatus and a method of determining an optimal writing power are provided to reduce the time required for Optimum Power Calibration (OPC) and reduce the difference between OPC results. The optical disc apparatus includes a light source which emits a laser beam to write/read data to/from an optical disc; a reader which receives a laser beam reflected from the optical disc and reads data written on the optical disc; and a controller which, to reduce the difference between OPC results, controls the light source to write test data more than once for determining an optimal writing power, controls the reader to read the test data, measures read quality of the test data, and detects an optimal writing power based on the measured read quality.

Abstract: A test pattern including a first test mark which is one unit-record-length longer than a shortest mark among modulating codes and a second test mark which is two or more unit-record-lengths longer than the shortest mark is recorded under a plurality of recording conditions (step S2). The recorded test pattern is reproduced (step S3), and based on a plurality of reproduced signals thus obtained, recording conditions allowing the first test mark and the second test mark, respectively, to be suitably recorded are selected (step S4). A recording condition for the shortest mark is determined by inference based on the recording conditions of the first test mark and the second test mark.

Abstract: An information recording medium includes a user information storage area which stores user information, a test write area which is extendable and for test write of information, a spare area which is extendable and capable of alternatively storing user information, and a recording position management information area including recordable range information expressing recordable ranges in the aforesaid test write area and the aforesaid spare area. The information recording medium, an information reproducing apparatus, an information reproducing method and an information recording method which make it easy to record and reproduce information properly are provided.

Abstract: When an optical disc apparatus of the present invention writes to an optical disc, it detects the level of the drive voltage for its laser drive circuit and, based on the detected level, adjusts the drive voltage for its laser diode so as to adjust the drive voltage for the laser drive circuit to a level within an appropriate range. Further, the write speed is also adjusted in accordance with the above adjustment of the drive voltages for the laser drive circuit and the laser diode.

Abstract: An information storage medium having a plurality of information storage layers, each of which includes an optimal power control (OPC) area for obtaining an optimal recording condition. Optimal power control areas in odd-numbered and even-numbered information storage layers viewed from a direction in which light is incident upon the information storage medium are disposed one on another to not directly face each other. An actually usable area of an optimal power control area in each of the information storage layers varies depending on use circumstances of each of the information storage layers. Therefore, when an OPC area of one information storage layer performs OPC, this OPC does not affect another information storage layer. Also, an area of each of the information storage layers can be efficiently used.

Abstract: A method for determining recording laser power on a super-resolution optical recording medium, on which information is recorded on a super-resolution optical recording medium by irradiating a laser beam modulated into a recording pulse train according to recording data to thereby form a recording mark train including recording marks and spaces smaller than the resolution limit of a reproduction optical system and recording marks and spaces equal to or larger than the resolution limit, is provided. At the time of recording, the method determines a minimum value and a maximum value of recordable laser powers determined by test-writing before recording, and determines a maximum value of a recordable range of laser power by adding to the minimum value one-third of a difference between the maximum value of the recordable laser powers and the minimum value. The method determines an optimal range of recording laser power from the minimum value of recordable laser powers to the maximum value of the recordable range.

Abstract: An information storage medium having a plurality of information storage layers, each of which includes an optimal power control (OPC) area for obtaining an optimal recording condition. Optimal power control areas in odd-numbered and even-numbered information storage layers viewed from a direction in which light is incident upon the information storage medium are disposed one on another to not directly face each other. An actually usable area of an optimal power control area in each of the information storage layers varies depending on use circumstances of each of the information storage layers. Therefore, when an OPC area of one information storage layer performs OPC, this OPC does not affect another information storage layer. Also, an area of each of the information storage layers can be efficiently used.

Abstract: An information storage medium having a plurality of information storage layers, each of which includes an optimal power control (OPC) area for obtaining an optimal recording condition. Optimal power control areas in odd-numbered and even-numbered information storage layers viewed from a direction in which light is incident upon the information storage medium are disposed one on another to not directly face each other. An actually usable area of an optimal power control area in each of the information storage layers varies depending on use circumstances of each of the information storage layers. Therefore, when an OPC area of one information storage layer performs OPC, this OPC does not affect another information storage layer. Also, an area of each of the information storage layers can be efficiently used.

Abstract: An information storage medium having a plurality of information storage layers, each of which includes an optimal power control (OPC) area for obtaining an optimal recording condition. Optimal power control areas in odd-numbered and even-numbered information storage layers viewed from a direction in which light is incident upon the information storage medium are disposed one on another to not directly face each other. An actually usable area of an optimal power control area in each of the information storage layers varies depending on use circumstances of each of the information storage layers. Therefore, when an OPC area of one information storage layer performs OPC, this OPC does not affect another information storage layer. Also, an area of each of the information storage layers can be efficiently used.

Abstract: An information recording medium is provided, which comprises a plurality of recording layers and a first disc information area for storing parameters relating to access to the plurality of recording layers and formats relating to the plurality of recording layers. The first disc information area is provided in a first recording layer which is one of the plurality of recording layers.

Abstract: A method, apparatus, and medium for erasing information recorded on a rewritable recording medium. The method includes: searching for test result information on a recording power recorded on a recording management area disposed on the recording medium; if corresponding test result information is found, reading in the test result information; and by using a recording power determined according to the read test result, recording a unique pattern on at least part of a user data area of the recording medium where predetermined information is recorded. According to the method, the writing characteristic can be greatly improved.

Abstract: An optical disk is compatible with one type of a recording apparatus which is designed to irradiate an optical beam onto the optical disk to form pits along the pregroove for actual recording of information. The optical disk is incompatible with another type of a recording apparatus which is designed to successively record the times of the test recording into a count area of the conventional optical disk. The optical disk has a test area corresponding to the test area of the conventional optical disk and a prepit area corresponding to the count area of the conventional optical disk, the prepit area being provisionally formed with prepits at least in a section corresponding to the predetermined section of the count area of the conventional optical disk so as to inhibit the other type of recording apparatus from conducting the test recording.

Abstract: A method and apparatus of controlling an optical disk apparatus determines a reference recording power at each of a plurality of recording speeds for an inserted optical disk, performs a power control procedure for a prescribed recording speed to determine a recording power at the prescribed recording speed in response to a recording request, and then computes a recording power at each of the recording speeds based on the reference recording power and the recording power determined at the prescribed recording speed. The power control procedure is performed only for an inner circumferential area of the disk, irrespective of whether a requested recording speed is less than or greater than the prescribed recording speed. As a result, the speed of the data recording operation may be substantially improved and/or other improvements may be realized.

Abstract: An information storage medium and an apparatus for recording and/or reproducing the information storage medium capable of controlling optimal recording power without an influence of an optimal power control (OPC) area in a layer upon an OPC area in a different layer. The information storage medium includes at least one information storage layer including an optimal power control area for obtaining an optical recording condition. OPC areas in adjacent information storage layers are disposed within different radiuses of the information storage medium. Accordingly, even when the information storage medium is made eccentric or has a manufacturing error, a recording property of the information storage medium is prevented from being degraded due to an influence of an OPC area in an information storage layer upon an OPC area in an adjacent information storage layer.