Abstract: An information recording medium (10) including a first region (11) in which medium identification information has been recorded, a data region (13), and a second region (12) which is positioned between the first region (11) and the data region (13) and in which control information has been recorded, in which an area of the first region (11) is greater than an area of the second region (12) in size.

Abstract: An information recording medium (10) including a first region (11) in which medium identification information has been recorded, a data region (13), and a second region (12) which is positioned between the first region (11) and the data region (13) and in which control information has been recorded, in which an area of the first region (11) is greater than an area of the second region (12) in size.

Abstract: An information recording medium (10) including a first region (11) in which medium identification information has been recorded, a data region (13), and a second region (12) which is positioned between the first region (11) and the data region (13) and in which control information has been recorded, in which an area of the first region (11) is greater than an area of the second region (12) in size.

Abstract: An information recording medium (10) including a first region (11) in which medium identification information has been recorded, a data region (13), and a second region (12) which is positioned between the first region (11) and the data region (13) and in which control information has been recorded, in which an area of the first region (11) is greater than an area of the second region (12) in size.

Abstract: An information recording medium (10) including a first region (11) in which medium identification information has been recorded, a data region (13), and a second region (12) which is positioned between the first region (11) and the data region (13) and in which control information has been recorded, in which an area of the first region (11) is greater than an area of the second region (12) in size.

Abstract: An information recording medium (10) including a first region (11) in which medium identification information has been recorded, a data region (13), and a second region (12) which is positioned between the first region (11) and the data region (13) and in which control information has been recorded, in which an area of the first region (11) is greater than an area of the second region (12) in size.

Abstract: Data can be encoded in physical medium and represented by shapes having many various physical attributes. In various examples, data points are encoded and represented by the physical shape, color, size, and/or structure of objects. In one embodiment, holes in memory surface substrates represent data. Various attributes of such holes, including depth, profile size, profile shape, and/or angle can represent data.

Abstract: When bnt denotes the length adjustment amount of a front edge portion of an nT recording mark (n: integer, T: channel clock length) and cnT denotes the length adjustment amount of a rear edge portion thereof with respect to a channel clock reference, d denotes a minimum value of n and k denotes a maximum value of n, the length adjustment amount bdT of a front edge portion of a shortest recording mark dT, the length adjustment amount cdT of a rear edge portion of the shortest recording mark dT, the length adjustment amount bkT of a front edge portion of a longest recording mark kT and the length adjustment amount ckT of a rear edge portion of the longest recording mark dT satisfy bdT+cdT>bkT+ckT.

Abstract: Disclosed is an optical disc with a first area to store data for playback and that is reflective or opaque to visible light, and a second area that is transparent to visible light and includes first and second concentric rings. In one embodiment, a method of printing information on the optical disc includes: printing an inverse first text pattern in the first ring during a first printing on a first side, where the first text pattern is formed in reverse as viewed from the first side; printing a second text pattern in the second ring during a second printing on the first side, where the second text pattern is correctly visible from the first side; and printing, during the second printing, a first solid pattern to overlay at least a portion of the first text pattern, where the first text pattern is correctly visible as viewed from a second side.

Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

Abstract: A track shield structure is disclosed that enables higher track density to be achieved in a patterned track medium without increasing adjacent track erasure and side reading. This is accomplished by placing a soft magnetic shielding structure in the space that is present between the tracks in the patterned medium. A process for manufacturing the added shielding structure is also described.

Abstract: A machine readable information storage medium, a reproducing method and apparatus which reproduces data from the storage medium, and a recording method and apparatus for recording data on the storage medium. The information storage medium includes a control area which stores within a data structure information usable by the recording or reproducing apparatus to record or reproduce the data on or from the storage medium. The information stored within the data structure includes a version corresponding to a specification, a revision number of recording speed, and an extended part version field.

Abstract: A machine readable information storage medium, a reproducing method and apparatus which reproduces data from the storage medium, and a recording method and apparatus for recording data on the storage medium. The information storage medium includes a control area which stores within a data structure information usable by the recording or reproducing apparatus to record or reproduce the data on or from the storage medium. The information stored within the data structure includes a version corresponding to a specification, a revision number of recording speed, and an extended part version field.

Abstract: A machine readable information storage medium, a reproducing method and apparatus which reproduces data from the storage medium, and a recording method and apparatus for recording data on the storage medium. The information storage medium includes a control area which stores within a data structure information usable by the recording or reproducing apparatus to record or reproduce the data on or from the storage medium. The information stored within the data structure includes a version corresponding to a specification, a revision number of recording speed, and an extended part version field.

Abstract: A machine readable information storage medium, a reproducing method and apparatus which reproduces data from the storage medium, and a recording method and apparatus for recording data on the storage medium. The information storage medium includes a control area which stores within a data structure information usable by the recording or reproducing apparatus to record or reproduce the data on or from the storage medium. The information stored within the data structure includes a version corresponding to a specification, a revision number of recording speed, and an extended part version field.

Abstract: A machine readable information storage medium, a reproducing method and apparatus which reproduces data from the storage medium, and a recording method and apparatus for recording data on the storage medium. The information storage medium includes a control area which stores within a data structure information usable by the recording or reproducing apparatus to record or reproduce the data on or from the storage medium. The information stored within the data structure includes a version corresponding to a specification, a revision number of recording speed, and an extended part version field.

Abstract: A machine readable information storage medium, a reproducing method and apparatus which reproduces data from the storage medium, and a recording method and apparatus for recording data on the storage medium. The information storage medium includes a control area which stores within a data structure information usable by the recording or reproducing apparatus to record or reproduce the data on or from the storage medium. The information stored within the data structure includes a version corresponding to a specification, a revision number of recording speed, and an extended part version field.

Abstract: A machine readable information storage medium, a reproducing method and apparatus which reproduces data from the storage medium, and a recording method and apparatus for recording data on the storage medium. The information storage medium includes a control area which stores within a data structure information usable by the recording or reproducing apparatus to record or reproduce the data on or from the storage medium. The information stored within the data structure includes a version corresponding to a specification, a revision number of recording speed, and an extended part version field.

Abstract: A machine readable information storage medium, a reproducing method and apparatus which reproduces data from the storage medium, and a recording method and apparatus for recording data on the storage medium. The information storage medium includes a control area which stores within a data structure information usable by the recording or reproducing apparatus to record or reproduce the data on or from the storage medium. The information stored within the data structure includes a version corresponding to a specification, a revision number of recording speed, and an extended part version field.

Abstract: A data medium of the compact disc type may include medium areas of different types configured to define digital content, and a controllable element having two different states corresponding respectively to the two different types of areas. The controllable element may be configured to take selectively one of its states in response to a command, so as to modify in a controllable manner the content of the data medium.

Abstract: Provided is a disk cartridge including a case body in which a plurality of disk-shaped recording media are configured to be receivable in an axial direction of a central shaft in parallel, and a first shell having a base surface section parallel to a recording surface of the disk-shaped recording media and a second shell having a basal surface section parallel to the recording surface of the disk-shaped recording media are coupled and separated through separation and connection in the axial direction.

Abstract: There is provided a disk cartridge including a case body in which a plurality of disk-shaped recording media are configured to be able to be received in an axial direction of a central shaft in parallel, and a first shell having a base surface section parallel to a recording surface of the disk-shaped recording medium and a second shell having a basal surface section parallel to the recording surface of the disk-shaped recording medium are coupled and separated through separation and connection in the axial direction, and a presser spring having a section to be attached, which is attached to the case body, and a pressing section configured to come in contact with an outer circumferential surface of the disk-shaped recording medium and to press the disk-shaped recording medium. The presser spring is formed of a resin material.

Abstract: According to one embodiment, a write-once type information storage medium comprises an organic dye based recording material having sensitivity at a 5 wavelength of 405 nm and at a recording wavelength in the range of 600 nm to 700 nm, wherein, when absorbance of a maximum absorption wavelength in the vicinity of 405 nm is defined as 1, the absorbance is 5% or more at any wavelength in the range of 600 nm to 700 nm.

Abstract: Compositions and methods for producing compositions comprising a monoamine-endcapped polyimide component. Based on a gas chromatography mass spectroscopy analysis of a surface rinse of the composition performed at room temperature, the composition can have at least one surface with less than or equal to 5 ppb releasable phosphorous residuals, and less than or equal to 5 ppb releasable volatile organic compound residuals. The composition can also comprise less than or equal to 10 ppb combined releasable residuals. Because of the very low levels of residual contamination, the compositions can be used to produce a variety of articles including a disk drive.

Abstract: Methods for operating an apparatus for reading from or writing to a Super-RENS optical recording medium, an apparatus for reading from Super-RENS optical recording media using such methods, and a Super-RENS optical recording medium suitable for such methods are described. The super-RENS optical recording medium has location information that is readable without super-RENS effect. The location information is provided as low-frequency information. For locating a position on the super-RENS optical recording medium, a reading light beam with a power below a power necessary for achieving a super-RENS effect is generated and the location information is retrieved from the super-RENS optical recording medium.

Abstract: A method for 3D recording of data on a medium formed from a transparent photosensitive material including at least one dopant. The method includes a first step of calibrating and checking a pulsed light source including calibrating the number of pulses, the level of fluence of each pulse emitted and the rate of the pulses and a step of inscribing an area of the material. The fluence of each pulse emitted, the number of pulses and the rate of the pulses are suitable for irradiating the material in the area so as to form fluorescent clusters stabilized from the dopant while minimizing the modification of the refractive index and the absorption coefficient of the medium in a wavelength range from visible to near infrared.

Abstract: According to an embodiment, a storage medium includes a transparent resin substrate having a concentric or spiral groove and a recording film formed on the groove on the transparent resin substrate, a recording mark being formed by irradiation of a laser beam, wherein a reproduction durability count in a case where reproduction is continuously carried out by a laser beam is 1,000,000 or more.

Abstract: A method for 3D recording of data on a medium formed from a transparent photosensitive material including at least one dopant. The method includes a first step of calibrating and checking a pulsed light source including calibrating the number of pulses, the level of fluence of each pulse emitted and the rate of the pulses and a step of inscribing an area of the material. The fluence of each pulse emitted, the number of pulses and the rate of the pulses are suitable for irradiating the material in the area so as to form fluorescent clusters stabilized from the dopant while minimizing the modification of the refractive index and the absorption coefficient of the medium in a wavelength range from visible to near infrared.

Abstract: The present disclosure relates to an optical recording medium and a manufacturing method for an optical recording medium capable of obtaining an appropriate reproduction signal, as a bar code-shaped recording region (BCA) on an optical recording medium. This recording region (BCA) is provided that includes high reflection rate regions and low reflection rate regions which appear alternately in the track line direction, and each of the high reflection rate regions and the low reflection rate regions is formed to be continuous in the track pitch direction, whereby a bar code-shaped reflection pattern is formed, and information is recorded with the reflection pattern. In the BCA, the low reflection rate region is formed with pit strings. The high reflection rate region and the low reflection rate region are formed to satisfy: S+M/2?0.

Abstract: A rotation-activated electronic component, preferably a RFID tag mounted on or incorporated in a support that is rotated when read, e.g. a CD or DVD. The RFID tag comprises an antenna, a rotational switch and a component, advantageously a processor. The antenna is adapted to transform received RFID signals to electric energy that powers the component. In a preferred embodiment, the rotational switch is adapted to cut the circuit unless the support does not rotate at or above a certain rotational speed. Supports equipped with the RFID tag of the invention will thus respond only if they rotate sufficiently. This can avoid collisions in case more than one such RFID tag is within communication range of an antenna of a reader. In a preferred embodiment, the information returned by the component is needed for full use of the content on the support.

Abstract: Optically detectable marks readable by a wide range of optical systems are included on an optical storage medium. Among other uses, the marks may be used to determine the type of the optical storage medium in an optical device capable of reading multiple types of optical storage media.

Abstract: An information recording medium includes a first information recording layer and a second information recording layer. The first information recording layer is formed at a laser beam entrance surface, and is configured so that information can be recorded thereupon and/or reproduced therefrom using a first objective lens having a numerical aperture NA1 and laser beam of a wavelength ?1. The second information recording layer is formed so as to have a distance to the laser beam entrance surface of 0.05 mm to 1.2 mm and is configured so that information can be recorded thereupon and/or reproduced therefrom using a second objective lens having a numerical aperture NA2 and laser beam of a wavelength ?2. When a diffraction limit ?2, determined by numerical aperture NA2 and wavelength ?2, is taken as ?2=0.61×?2/NA2, a track pitch Tp1 of a track formed on the first information recording layer is Tp1<?2.

Abstract: An optical storage medium (20) comprises a first data layer (21), for example a Blu-ray (BD) data layer. In addition, the optical storage medium (20) comprises a second data layer (23), for example a DVD data layer. The second data layer (23) is bonded to a substrate (25) using a third layer (27). The third layer (27) comprises an adhesive layer combined with a reactive layer. A reactive agent contained in the reactive layer acts to provide a limited lifetime to the data contained in the second layer (23). The second data layer (23) (i.e. having a limited lifetime) contains access data for controlling access to at least some of the data contained on the first data layer (21). In this way, access to a BD layer can be controlled by a separate DVD layer having a limited lifetime.

Abstract: An optical disc recording apparatus (10) is provided with a tracking servo (13) for tracking a spiral track of concave and convex marks, an analog signal processor (14) for extracting a reproduction signal corresponding to the concave and convex marks, a digital signal processor (15) for extracting a channel clock synchronized with a channel bit length of the concave and convex marks, and a sub-information recording section (30) for recording sub-information by irradiating laser light based on the tracking to the spiral track. The sub-information recording section (30) records all the sub-information by repeating a process of recording a part of the sub-information by discretely irradiating laser light at a specified interval and with a specified frequency in synchronism with a channel clock by one tracking to form recordable marks on a reflective film a plurality of times.

Abstract: Optically detectable marks readable by a wide range of optical systems are included on an optical storage medium. Among other uses, the marks may be used to determine the type of the optical storage medium in an optical device capable of reading multiple types of optical storage media.

Abstract: The invention relates to a method and a recording device for easy and quick access to record carrier management information stored on the record carrier itself. The invention further relates to a record carrier for use in such a method and recording device.

Abstract: Obtain an expanded address without altering the bit number of an address which is embedded in a wobble. Generate a virtual bit which is not recorded on a disc, and which is expressed by the disparity from the rules and the presence or absence of information embedded in part or all of the wobble address.

Abstract: Obtain an expanded address without altering the bit number of an address which is embedded in a wobble. Generate a virtual bit which is not recorded on a disc, and which is expressed by the disparity from the rules and the presence or absence of information embedded in part or all of the wobble address.

Abstract: An apparatus is described for recording an optical record carrier (40). The apparatus is arranged for recording a visually detectable pattern (LBL) at the record carrier in a ring shaped zone (RP). The apparatus is further arranged to record data (Data1, Data2) and a primary data organizing system (FS) wherein the data is organized. The primary data organizing system (FS) does not refer to a physical address within the ring shaped zone. The apparatus is further arranged for recording at least part of the data (Data2) or the primary data organizing system on the record carrier at an area peripherally arranged with respect to the ring shaped zone.

Abstract: An information storage medium and a recording/reproducing apparatus and method, the information storage medium includes: an area for recording information regarding a predetermined function applied thereto, wherein the information regarding the predetermined function includes specific information in which set information regarding the predetermined function is set by a recording/reproducing apparatus that can recognize the predetermined function, and common information set by the recording/reproducing apparatus that can recognize the predetermined function based on corresponding information dependent upon the set information so that a recording/reproducing apparatus that cannot recognize the predetermined function can use the predetermined function. Accordingly, a recording/reproducing apparatus that cannot recognize a predetermined function can properly use a medium having the predetermined function.

Abstract: A write-once optical disc and a method and apparatus for recording management information on the disc are provided. The method includes recording an opened SRR information on a recording medium, and removing an identification of a certain SRR from the opened SRR information once the certain SRR is closed. The opened SRR information carries an identification of any opened SRR, and the number of opened SRRs allowed is at most a predetermined number.

Abstract: A method for copy protection includes providing audiovisual or audio data stored in sectors of a record carrier having a file system, and providing additional or modified data to be stored in further sectors. The method includes generating a first file of the file system referencing at least a part of the sectors and none of the further sectors, so when the first file is rendered by a playback device, the data is reproduced which is included in the part of the sectors. The method also includes generating a second file of the file system being another file than the first file and referencing at least a part of the sectors and further referencing at least one of the further sectors, such that when the second file is rendered by the playback device the part of the sectors and the at least one of the further sectors are reproduced.

Abstract: There is herein described a Transmedian Storage and Transfer Device (TSTD) that will provide a more useful system for information storage, retrieval, and computation. This is achieved by increasing the speed and storage capacity beyond that provided by existing computers and related systems. To obtain these benefits, the TSTD utilizes a spherical surface for information storage along with a system detector that can be point-like, line-like, or spherical. Further more, multiple spheres can be incorporated into the TSTD thus resulting in a sphere matrix.

Abstract: Disclosed is an optical disc with a first area to store data for playback and that is reflective or opaque to visible light, and a second area that is transparent to visible light and includes first and second concentric rings. In one embodiment, a method of printing information on the optical disc includes: printing an inverse first text pattern in the first ring during a first printing on a first side, where the first text pattern is formed in reverse as viewed from the first side; printing a second text pattern in the second ring during a second printing on the first side, where the second text pattern is correctly visible from the first side; and printing, during the second printing, a first solid pattern to overlay at least a portion of the first text pattern, where the first text pattern is correctly visible as viewed from a second side.

Abstract: An information storage medium and a recording/reproducing apparatus and method, the information storage medium includes: an area for recording information regarding a predetermined function applied thereto, wherein the information regarding the predetermined function includes specific information in which set information regarding the predetermined function is set by a recording/reproducing apparatus that can recognize the predetermined function, and common information set by the recording/reproducing apparatus that can recognize the predetermined function based on corresponding information dependent upon the set information so that a recording/reproducing apparatus that cannot recognize the predetermined function can use the predetermined function. Accordingly, a recording/reproducing apparatus that cannot recognize a predetermined function can properly use a medium having the predetermined function.

Abstract: An information storage medium and a recording/reproducing apparatus and method are provided with the ability to extend at least one middle area of an information storage medium comprising two or more recording layers so as to ensure optimal data recording/reproduction. The information storage medium comprises a plurality of recording layers, each including a user data area for recording user data and at least one middle area used by a recording/reproducing apparatus that records/reproduces data on the information storage medium to move among two recording layers, wherein the at least one middle area is extended when the information storage medium is finalized. As a result, when an information storage medium that contains an OPC area for obtaining optimum recording conditions (such as recording power) in an outer circumference thereof is finalized, and if a middle area of the disk is not large enough, the middle area can flexibly be extended.

Abstract: An information storage medium and a recording/reproducing apparatus and method are provided with the ability to extend at least one middle area of an information storage medium comprising two or more recording layers so as to ensure optimal data recording/reproduction. The information storage medium comprises a plurality of recording layers, each including a user data area for recording user data and at least one middle area used by a recording/reproducing apparatus that records/reproduces data on the information storage medium to move among two recording layers, wherein the at least one middle area is extended when the information storage medium is finalized. As a result, when an information storage medium that contains an OPC area for obtaining optimum recording conditions (such as recording power) in an outer circumference thereof is finalized, and if a middle area of the disk is not large enough, the middle area can flexibly be extended.

Abstract: A method for copy protection in which an audiovisual or audio data is divided into a plurality of portions. The plurality of portions is at least partly scrambled and prepared so as to be stored on a record carrier in the scrambled order. This is done so that a physical position on the record carrier, e.g., a sector of the record carrier, where a respective portions of the divided data is stored depends on the scrambled order.

Abstract: An information storage medium and a recording/reproducing apparatus and method, the information storage medium includes: an area for recording information regarding a predetermined function applied thereto, wherein the information regarding the predetermined function includes specific information in which set information regarding the predetermined function is set by a recording/reproducing apparatus that can recognize the predetermined function, and common information set by the recording/reproducing apparatus that can recognize the predetermined function based on corresponding information dependent upon the set information so that a recording/reproducing apparatus that cannot recognize the predetermined function can use the predetermined function. Accordingly, a recording/reproducing apparatus that cannot recognize a predetermined function can properly use a medium having the predetermined function.

Abstract: An information recording medium, and a recording/reproducing apparatus and a recording/reproducing method for the recording medium. Original data is sequentially updated by replacing an original recording block with one or more replacement recording blocks. A replacement recording block includes at least one of an original address field indicating a location of the original recording block or a previous address field indicating a location of an immediately previous recording block. Replacement information is effectively recovered in a system where a replacement for logical overwriting (LOW) occurs in either a spare area and a user data area by reference to the address fields in each replacement recording block.