Abstract: A cutter unit for carrying a cutter for cutting a phonographic record includes a cutter carrier and a cutter head. The cutter head is carried by the cutter carrier and arranged to be displaced relative to the cutter carrier, in particular to rotate around a cutter pivot, the cutter unit being arranged in a cartridge enclosing and protecting the cutter unit.

Abstract: The present disclosure describes methods and apparatuses for fabricating integrated-circuit (IC) die with tilted patterning. In some aspects, mandrels are fabricated on a material stack and occlude portions of a layer of material from a field of energy radiated at an angle of incidence relative to the mandrels. The occluded portions of the layer of material can be used to mask an underlying film to create a film pattern on a substrate of the IC die. These methods and apparatuses may enable the fabrication of IC die with features that are smaller in size than those afforded by conventional lithography processes.

Abstract: An interactive television program guide system with program series reminder and recording capabilities is provided. The system allows a user to set a reminder or schedule a recording for a single episode or for each episode of a program series. In addition, other options may be provided that allow the user to determine, for example, whether to schedule reminders/recordings for episodes on all channels on which the program airs or only on a selected channels, whether to schedule reminders/recordings for all episodes including reruns or only new episodes, whether to schedule reminders/recordings for network or syndicated episodes, and whether to schedule reminders/recordings for episodes on all days or only on selected days of the week. Before the scheduled broadcast time of each episode of each selected program series, the system sends a reminder message to the user that reminds the user of the program episode or sends a record command to a videocassette recorder to initiate recording of the episode.

Abstract: An optical-information recording medium includes a groove and a land that are alternately provided. Address information in the groove is recorded by wobbles in the groove, and address information on the land is recorded by a combination of the wobbles in the grooves provided at two opposite sides of the land.

Abstract: A recording medium is provided with: a guide layer on which a guide track or tracks are formed; and a plurality of recording layers, wherein a same mark group is formed in a same rotational phase position of each of a plurality of guide tracks which are included in a beam spot of guide laser light, the mark group including a pair of record marks which are shifted by a predetermined distance toward a right side and a left side, respectively, from a track center.

Abstract: An optical information recording medium operated by CAV or zone CAV, wherein a groove that wobbles is formed in advance, and information is recorded in the groove and a land adjacent to the groove, an address is recorded by a wobble signal of the groove, the groove is alternately provided with a first section recording an address N by the wobble signal, and a second section recording an address (N?1) or (N+1) by the wobble signal, in two groove tracks sandwiching a land track, the first section of one of the groove tracks matches the second section of the other of the groove tracks, and an address of the groove is read from the first section, and an address of the land is read from the first and the second sections located on both sides of the land track, and recording a same address.

Abstract: An embodiment of the invention, to provide a recording method and a storage medium for BCA data with high reliability for a storage medium and a method for reproducing BCA data from the storage medium, and an information recording apparatus and an information reproducing apparatus. In a conventional optical disk, low reliability data is recorded in a data area of BCA. Thus, the thickness of a film material for use in a recording layer oriented to BCA data or close to the inner periphery of the storage medium in the vicinity thereof is formed in uniform thickness by using a substrate of the storage medium, the substrate being formed by being suctioned by means of adsorbing mechanisms formed in an arc shape so as to integrated two of the adsorbing mechanisms to be adjacent to each other.

Abstract: The present invention relates to a format of a recordable optical recording medium, which is designed in such a way that it can be read by any standard player and recorder. The optical recording medium has a recording layer with a structure of lands and grooves, which generates a strong push-pull signal in an area of the recording layer without recorded marks and a small push-pull signal in an area of the recording layer with recorded marks.

Abstract: Disclosed herein is an optical disc having an information area situated between an internal edge and an external edge of the optical disc. The optical disc includes a first substrate, a second substrate, a recording layer, a reflecting layer and a number of surface structures. The second substrate is disposed over the second substrate, the recording layer and the reflecting layer are disposed between the two substrates, and the reflecting layer is disposed between the first substrate and the recording layer. The surface structures are discontinuously disposed on the surface of the second substrate.

Abstract: Disclosed herein is an optical disc having an information area situated between an internal edge and an external edge of the optical disc. The optical disc includes a first substrate, a second substrate, a recording layer, a reflecting layer and a number of surface structures. The second substrate is disposed over the second substrate, the recording layer and the reflecting layer are disposed between the two substrates, and the reflecting layer is disposed between the first substrate and the recording layer. The surface structures are discontinuously disposed on the surface of the second substrate.

Abstract: A fuel cell component includes a fuel cell component body having a surface, and an identification information display portion provided on the fuel cell component body. The identification information display portion is provided at a recessed region of the fuel cell component body recessed relative to the surface.

Abstract: According to one embodiment, an information recording medium characterized by including, a first servo layer, a second servo layer, and a data layer, the information recording medium further including, a first spiral track and a second spiral track formed between the first servo layer and the second servo layer and spiraling in opposite directions.

Abstract: A fabrication method of a multilayer optical recording medium having a plurality of recording layers, comprises a step of preparing an optical recording medium having at least one record area; a write-position mark generating step of recording write-position marks in the record area beforehand; a step of preparing an optical system including a common objective lens to focus a data recording beam and a position mark recording beam on different positions in a thickness direction of the record area; a first data writing step of writing data between the write-position marks with following the write-position marks by the data recording beam; a position mark recording step of, in parallel with the first data writing step, recording new write-position marks in the record area by the position mark recording beam; and a second data writing step of writing data between the new write-position marks with following the new write-position marks by the data recording beam.

Abstract: A recording medium is provided and includes; a substrate having a first area formed with a first groove and a second area formed with a second groove, at least one information layer provided on the substrate, and a protecting layer provided on the information layer. Predetermined binary information has previously been recorded on the first groove and the first groove is shallower or narrower than the second groove.

Abstract: Provided is an optical information recording medium that can be recorded with data with only a special recording apparatus and the recorded data can be read out with a general recording/reproducing apparatus. The optical information recording medium includes a disc-like light-transmissive substrate having a surface provided with a spiral groove WB having a wobble and a land LN between adjacent segments of the groove WB, a light-absorbing layer disposed on the surface of the light-transmissive substrate, and a light reflection layer disposed on the light-absorbing layer. The groove WB has a depth Ds of about 140 nm?Ds?155 nm, the light-absorbing layer has a recess with a depth Dd of about 95 nm?Dd?105 nm in the groove, and a push-pull signal before recording has a value of about 0.3 or less. The optical information recording medium may include an anti-illegal copy measure.

Abstract: An attenuation-amount adjusting circuit includes: a light irradiating unit that alternately irradiates a laser beam of a writing level and a laser beam of a readout level on an optical disk that has a groove formed by a wobble pattern and plural markers indicating physical positions in the groove; a light receiving unit that receives reflected light of the laser beam irradiated on the optical disk and converts the reflected light into a reproduction signal; and a writing-waveform attenuating unit that attenuates an amplitude level of a writing waveform corresponding to the reflected light of the laser beam of the writing level in the reproduction signal according to a position from a rising edge of the writing waveform.

Abstract: A code disk for a high-resolution encoder that can detect an absolute position and a method for manufacturing a mold to produce the code disk are provided. The code disk is formed by using transparent substrate. The code disk includes a plurality of tracks provided on the transparent substrate and an area provided between the plurality of tracks. Each surface of the plurality of tracks has a different pattern. A level of the area is different from that of the each surface of the plurality of tracks. The method for manufacturing the mold includes steps of processing a plurality of tracks with a flat surface on material; processing an area with a level different from that of each surface, between the plurality of tracks; forming different patterns on the each surface; plating the first material; and peeling plating from the first material to obtain a mold.

Abstract: A high-density read-only optical disc, and an optical disc apparatus and method using the same. The apparatus and method record data on a lead-in area of a high-density read-only optical disc such as a BD-ROM (Blu-ray disc ROM (Read Only Memory)) in the form of pre-pit strings associated with an HFM (High-Frequency Modulated) groove applied to a BD-RW (Blu-ray Disc Rewritable). Moreover, the apparatus and method continuously apply the same tracking servo operation to an entire area of the same high-density read-only optical disc or rewritable optical disc. Therefore, the apparatus and method can simplify an algorithm for controlling a plurality of tracking servo operations, and avoid an increased size of the optical disc apparatus.

Abstract: A high-density read-only optical disc, and an optical disc apparatus and method using the same. The apparatus and method record data on a lead-in area of a high-density read-only optical disc such as a BD-ROM (Blu-ray disc ROM (Read Only Memory)) in the form of pre-pit strings associated with an HFM (High-Frequency Modulated) groove applied to a BD-RW (Blu-ray Disc Rewritable). Moreover, the apparatus and method continuously apply the same tracking servo operation to an entire area of the same high-density read-only optical disc or rewritable optical disc. Therefore, the apparatus and method can simplify an algorithm for controlling a plurality of tracking servo operations, and avoid an increased size of the optical disc apparatus.

Abstract: The present invention relates to disc-shaped information-carrying media for storage and reproduction of audio-, video- and other types of information in a digital form. The disc-shaped information-carrying medium comprises at least a substrate with a matching bore in its central area for locking said medium in a reading device, said substrate having a first side and a second side opposite thereto, on at least said first side of said substrate a first information area is provided for information storage and/or recording and reading such information using a laser beam. According to a first embodiment said substrate thickness at least within said first information area does not exceed 0.8 mm, said substrate central area is provided with N>1 ending protrusions projecting over said substrate first side and facilitating locking said medium in a reading device drive.

Abstract: By use of a substrate which can be stably formed and has a relatively small groove depth, a very high density optical recording medium having good recording/reading characteristics is provided. In an optical recording medium of a surface incidence type, in which a reflective layer, a recording layer containing a dye as a main component and a cover layer are sequentially formed on a substrate having guide grooves formed therein, a guide groove part on a far side from a plane of incidence of a recording/reading light beam on the cover layer is set as a recording groove part, and reflected light intensity in a recorded pit portion formed in the recording groove part is increased by a phase shift and is set higher than reflected light intensity in unrecorded.

Abstract: Provided are a medium structure which allows track narrowing onto a three-dimensional pit selection type disc, and its corresponding optical disc device. Multiple data pit strings are formed between track guide grooves, and a phase-change recording film is formed only in the data pit strings. Thereby, a disc configuration is achieved. Reflectivity and a phase of each of a space portion and a mark portion are appropriately set. Thereby, normal resolution signal cancel is implemented to prevent deterioration in data crosstalk and a push-pull signal. An optical disc medium of the present invention is supported by an optical disc device having a configuration in which a signal is selected from a push-pull signal of a main beam and push-pull signals of sub-beams to read out wobble address information.

Abstract: A data storage master disk and method of making a data storage master disk. The data storage disk master is for use in a data storage disk replication process. The data storage disk molding processes produces replica disks having a surface relief pattern with replica lands and replica grooves. The method includes providing a master substrate. The master substrate is at least partially covered with a layer of photosensitive material. A surface relief pattern having master lands and master grooves is recorded in the data storage disk master, including the steps of exposing and developing the photosensitive material is controlled to form master grooves extending down to a substrate interface between the master substrate and the layer of photosensitive material, such that the width of the master grooves at the substrate interface corresponds to a desired width of the replica lands.

Abstract: An optical recording medium comprises a transparent lower disk and an upper disk secured together by a transparent intermediate member. On one side of the lower disk, groove tracks of width WG0 and land tracks of width WL0 are formed. All tracks of the lower disk are coated with a recording film on which a laser beam is incident from below and a reflecting film on the recording film for partially reflecting the laser beam. The upper disk is formed with land tracks of width WL1 and groove tracks of width WG1 for receiving light through the corresponding groove and land tracks of the lower disk. All tracks of the upper disk are also coated with laminated recording and reflecting films. The ratio WG1/WL1 of the upper disk is greater than unity and is equal to or greater than the ratio WG0/WL0 of the lower disk so that the carrier-to-noise ratios of the two disks are substantially equal to each other.

Abstract: An optical disk (D) is provided with multiple grooves (G) and multiple lands (L) alternating with each other. The address data recording regions have a pair of wobbling sections (31a, 31b) formed on both sidewalls of a groove (G) and having an identical phase. Thus, it is possible to obtain push-pull signals having a larger amplitude, which is advantageous for increasing the data recording density.

Abstract: An optical storage disc has portions for storing pre-recorded or mastered information and portions for storing user writable information, where the mastered portion and the writable portions have different storage capacities or areal data densities. During manufacture, a substrate is formed with a sequence of bumps to represent the mastered information and a series of grooves and lands, where information can later be written on the lands. A phase-change material is deposited over the substrate, the phase-change material changing both physical structure and optical constants when written to, e.g., by a laser.

Abstract: An optical information recording medium includes one or more information layers including a recording layer for recording/reproducing an information signal by irradiation with a laser light, and a seperating layer or a protective substate on which a first information layer of the information layer on the irradiation face side is formed. The seperating layer or the protective substrate having a guide groove spirally or concentrically formed on the surface, and the respective inclined planes on the inner perimeter side and the outer perimeter side of the guide groove having inclined angles ? and ? with respect to the bottom face of the guide groove. The guide groove has one or more dissymmetric regions in the radius direction where the inclined angles ? and ? are different. The information layer has roughly agreeing thicknesses in the inclined face portion on the inner and outer perimeter sides in the dissymmetric region.

Abstract: A stamper is mounted to a surface of at least one of a stationary-side die and a movable-side die. A transfer surface of the stamper is positioned substantially flush with a first surface of an inner peripheral holding member for holding the stamper near an inner periphery thereof which first surface is positioned adjacent to the transfer surface of the stamper. A first distal end of the inner peripheral holding member, which is positioned to face the cavity, and a second distal end of a die member, which is positioned to face the cavity, the die member being disposed adjacent to the inner peripheral holding member, are both projected more into the cavity than the transfer surface of the stamper. A molding burr can be suppressed from projecting upward from the vicinity of an inner peripheral edge of the substrate surface substantially flush with the transfer portion.

Abstract: An information recording carrier according to one embodiment has minute pattern including plural grooves or lands formed to be substantially in parallel and adjacent each other and comprises a supporting body having the minute pattern, a recording layer formed on the minute pattern formed on the supporting layer and a light transmission layer formed on the recording layer. The minute pattern is formed under a relation of P<?/NA, where a pitch of each groove or land is P, a wavelength of a laser beam is ? and a numerical aperture of an objective lens is NA. The plural grooves or lands have at least a wobbling region and data is recorded wobblingly in the wobbling region by frequency shift modulation. A phase relation between a high frequency portion and a low frequency portion composing the frequency shift modulation is ±(?/20.5) to ±(?/0.75). The data is also recorded wobblingly in the wobbling region by bi-phase modulation.

Abstract: According to one embodiment, when recording information by using a semiconductor laser at 450 nm or less, an information recording medium satisfies 9.5×10?8??/(X*NA)?4.6×10?8 (where X is the linear recording velocity, ? is the laser wavelength, and NA is the numerical aperture).

Abstract: An optical disk according to the present invention has a guide groove formed with a width which is not less than 80 nm and not more than 170 nm in terms of a half-value width. A depth of the guide groove is formed within a range in which (n1?n2)·d1+n2·d2=(2m?1)·?/4 is ±15%, wherein n1 is a refractive index of a substrate, n2 is a refractive index of a recording film, ? is a wavelength of light beams used for recording and reproduction of information, d1 is a depth of the guide groove, d2 is a depth of the recording film positioned on the guide groove, and m is an integer (m=1, 2, 3, 4 . . . ).

Abstract: Provided are a medium structure which allows track narrowing onto a three-dimensional pit selection type disc, and its corresponding optical disc device. Multiple data pit strings are formed between track guide grooves, and a phase-change recording film is formed only in the data pit strings. Thereby, a disc configuration is achieved. Reflectivity and a phase of each of a space portion and a mark portion are appropriately set. Thereby, normal resolution signal cancel is implemented to prevent deterioration in data crosstalk and a push-pull signal. An optical disc medium of the present invention is supported by an optical disc device having a configuration in which a signal is selected from a push-pull signal of a main beam and push-pull signals of sub-beams to read out wobble address information.

Abstract: Minute structures are obtained by exposing a process target material and changing the shape thereof by relatively shifting a laser beam or electron beam against the process target material and simultaneously repeating irradiation in an intermittent manner. A plurality of minute convex or concave shapes are formed on the process target material by employing a branching element for branching a single beam into a plurality of beams; a parallel element for converting said plurality of beams into beams which respectively advance in parallel; and a condensing element for condensing the plurality of beams to the process target material and generating a plurality of minute spots thereon.

Abstract: To make a magneto-optical disk to have higher track density and enable stable tracking servo to be performed thereon. On an magneto-optical disk, a first groove Gv1, a second groove Gv2, and a third groove Gv3 are formed so as to be adjacently arranged. The first groove Gv1 and the second groove Gv2 are deep grooves, and the third groove Gv3 is a shallow groove. Data is recorded on six recording tracks of these three grooves and three lands between respective grooves. A CTS signal is obtained by a sum signal (A+B+C+D) of a photo-detector 6, and a push-pull signal is obtained by a difference signal (A+D)?(B+C) of a photo-detector 8.

Abstract: A mark is formed on a resist disk according to set values of indexes representing magnitudes of causes that affect deterioration in a quality of a playback signal at the time of signal playback. A ROM media is manufactured using the resist disk.

Abstract: On a magneto-optical disk, a first groove Gv1, a second groove Gv2, and a third groove Gv3 are formed so as to be adjacently arranged. The first groove Gv1 and the second groove Gv2 are deep grooves, and the third groove Gv3 is a shallow groove. The first groove Gv1 and the second groove Gv2 are formed by being wobbled. Data is recorded on four recording tracks of the two deep grooves and two lands between the deep grooves and the shallow groove. A CTS signal is obtained by a sum signal (A+B+C+D) of a photo-detector 6, and a push-pull signal is obtained by a difference signal (A+D)?(B+C) of a photo-detector 8.

Abstract: In an apparatus for reading a data storage medium, a control unit controls a first driving unit so as to enable the first driving unit to drive a carrier frame loaded with the data storage medium thereon to move back and forth between first and second limit positions along a first direction, receives optically detectable information read by an optical detecting unit from the data storage medium, and activates a second driving unit to move the optical detecting unit by a predetermined distance along a second direction transverse to the first direction upon detection that the carrier frame has been moved by the first driving unit from one of the first and second limit positions to the other one of the first and second limit positions.

Abstract: A code disk for a high-resolution encoder that can detect an absolute position and a method for manufacturing a mold to produce the code disk are provided. The code disk is formed by using transparent substrate. The code disk includes a plurality of tracks provided on the transparent substrate and an area provided between the plurality of tracks. Each surface of the plurality of tracks has a different pattern. A level of the area is different from that of the each surface of the plurality of tracks. The method for manufacturing the mold includes steps of processing a plurality of tracks with a flat surface on material; processing an area with a level different from that of each surface, between the plurality of tracks; forming different patterns on the each surface; plating the first material; and peeling plating from the first material to obtain a mold.

Abstract: A stamper and optical disk. A photoresist is applied to a substrate and this photoresist is exposed, developed and then transferred to form a disk master which has a recess/protrusion pattern formed on its one side. The one side of the disk master is etched to narrow the width of a protruding part constituting the recess/protrusion pattern, and the recess/protrusion pattern of the disk master with the reduced width of the protruding part is transferred to form a stamper. The recess/protrusion pattern provided on the stamper is transferred to form a predetermined pattern on a substrate of an optical disk.

Abstract: A master-disc-manufacturing apparatus includes an electron-beam emitting portion for emitting an electron beam, an electron-beam converging portion for converging an electron beam, a retarding voltage applying portion for applying a substrate with a negative potential having a magnitude of decelerating the electron beam, and a vacuum atmosphere producing portion for evacuating a chamber to produce a vacuum atmosphere therein.

Abstract: Minute structures are obtained by exposing a process target material and changing the shape thereof by relatively shifting a laser beam or electron beam against the process target material and simultaneously repeating irradiation in an intermittent manner. A plurality of minute convex or concave shapes are formed on the process target material by employing a branching element for branching a single beam into a plurality of beams; a parallel element for converting said plurality of beams into beams which respectively advance in parallel; and a condensing element for condensing the plurality of beams to the process target material and generating a plurality of minute spots thereon.

Abstract: A recordable digital video disc preferably employable for information recording method using a laser beam having a wavelength of 600–700 nm, composed of a transparent disc substrate provided with a spiral pregroove, a recording dye layer placed in the pregroove, and a light-reflecting layer, arranged in order, wherein the recording dye layer has a thickness in the range of 40% to 90% of a thickness corresponding to an optical path which gives the first minimum reflectance, the optical path giving the first minimum reflectance being determined from a reflectance curve which is prepared using recordable digital video discs composed of the same disc substrate, the same recording dye layer having varying thickness, and the same light-reflecting layer.

Abstract: A recording/reproducing medium having grooves, a land formed between the grooves, and land prepits formed on the land in which each of said land prepits has a most optimum design condition where a ratio (LLP Level/offset) between a voltage amplitude (LLP Level) of a land prepit detection signal and an offset level (offset) of an RF signal becomes more than about or where an amplitude change of an RF signal through the land prepit becomes minimum. The recording/reproducing medium can be one of a DVD-R and a DVD-RW.

Abstract: A system and method for replicating magnetic patterns on hard disk media includes a mask located over or above a magnetic recording layer. The recording layer may include a single, dual, or multi-layer recording layer. A pattern is or has been formed in the mask, where the pattern defines the recordable regions and the non-recordable regions to be created in one or more layers within the recording layer. Portions of the recording layer are then exposed. An etch may then be performed to create grooves within one or more layers in the exposed regions of the recording layer. The magnetic properties of at least one layer in the exposed portions of the recording layer are then altered in order to create recordable or non-recordable regions. The mask is then removed from the recording layer.

Abstract: An optical disk includes at least one region along a radial direction, and a plurality of tracks provided in the at least one region. The at least one region contains address regions radially positioned on the plurality of tracks. In the address regions, data which is common between two adjacent tracks of the plurality of tracks is recorded at positions aligned along the same radial direction on the two adjacent tracks, and data which is not common between the two adjacent tracks is recorded at positions along different radial directions on the two adjacent tracks.

Abstract: A master-disc-manufacturing apparatus includes an electron-beam emitting portion for emitting an electron beam, an electron-beam converging portion for converging an electron beam, a retarding voltage applying portion for applying a substrate with a negative potential having a magnitude of decelerating the electron beam, and a vacuum atmosphere producing portion for evacuating a chamber to produce a vacuum atmosphere therein.

Abstract: An optical information recording medium recordable at a high density two times or more higher than that of currently-used CD-Rs by optimally determining the thicknesses of a recording layer and a reflecting layer. The optical information recording medium comprises the recording layer formed on a transparent substrate having a spiral pregroove formed thereon, wherein a track pitch Tp of the pregroove is 1.0 ?m?Tp?1.2 ?m and a thickness Dg of the recording layer on the pregroove is 80 nm?Dg?120 nm.

Abstract: A method for forming micropatterns includes forming a thin film consisting of a single layer or of plural layers on a substrate, irradiating an energy beam to the thin film to elevate the temperature of a region to a predetermined temperature or higher to thereby modify the region of the thin film, and patterning the thin film at least in such a manner to leave over the modified region.

Abstract: A rewritable optical recording medium includes a segmented groove area in which the groove track is segmented along a rotating direction of the recording medium by groove non-forming portions to form a plurality of groove portions; and a continuous groove area in which a continuous groove is formed, the continuous groove having a groove width smaller than a groove width in the segmented groove area.

Abstract: In an apparatus for reading a data storage medium, a control unit controls a first driving unit so as to enable the first driving unit to drive a carrier frame loaded with the data storage medium thereon to move back and forth between first and second limit positions along a first direction, receives optically detectable information read by an optical detecting unit from the data storage medium, and activates a second driving unit to move the optical detecting unit by a predetermined distance along a second direction transverse to the first direction upon detection that the carrier frame has been moved by the first driving unit from one of the first and second limit positions to the other one of the first and second limit positions.