摘要:
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.
摘要:
A method of recording control information in a recording medium, such as an optical disc, including at least one recording layer is provided Velocity information and per recording velocity write strategy (write strategy parameters) is included in control information, such that standardized control information can be uniformly applied to cope with the playback of a recorded optical disc. The method includes steps of recording, per applicable recording velocity, the control information within a management area of the at least one recording layer of the optical disc; and recording at least one write strategy information per the applicable recording velocity within the control information.
摘要:
A recording medium, such as a high-density and/or read-only recording medium including a data area including at least two data sections and a linking area to link neighboring data sections, the linking area including at least two frame sync signals, where values of the at least two frame sync signals maintain uniqueness, and to methods and apparatuses for forming, recording, and reproducing the recording medium.
摘要:
The present invention relates to a high-density disk that is structured to prevent a collision of an optical pickup's objective lens with the high-density disk if the disk is placed upside down in a disk device that is able to record and reproduce signals to/from the high-density disk. A high-density disk recording medium according to the present invention is structured such that, wherein a recording layer having high-density pit patterns is offset from a center plane of disk thickness, both sides of a clamping zone bisected by the center plane have differing thicknesses. One or both sides may protrude from surface of the disk recording medium, or one side of the clamping zone may protrude from the surface while the other side is indented below the surface.
摘要:
The present invention provides a method of configuring and recording control information on an optical disc, thereby enabling to facilitate to utilize the specified control information and to efficiently cope with the recording/reproducing of the optical discs. In configuring a control information within a disc management area of a read-only or recordable disc, the present invention includes configuring the control information with a common field recording an information commonly applied to both of the read-only and recordable discs and a specific field recording an information failing to be commonly applied to at least one disc type.
摘要:
A high density optical disc that can be driven changeably with the existent optical disc by the same driving apparatus. On the recording surface of the optical disc, a light transmissive layer with a thickness of about 0.2 to 0.4 mm is formed. The recording face is accessed by allowing a light beam with a wavelength of 395 to 425 nm in a spot shape to be irradiated onto it. Also, the light beam is converged in a spot shape by an objective lens having the numerical aperture of about 0.62 to 0.68.
摘要:
One embodiment includes providing control information, wherein the control information includes one or more recording speed flags indicating respectively whether one or more recording speeds are applicable to each of the recording layers. The control information also includes write strategy information depending on each of the applicable recording speeds, and the control information is recorded on a specific area of the recording medium.
摘要:
A solid oxide fuel cell stack that contains a plurality of fuel cells, each of which includes an anode and a cathode disposed on opposite sides of a solid electrolyte, and an electrically conductive interconnect disposed between the anode and cathode. The interconnect includes a substrate and a first surface in electrical contact with the anode and a second surface in electrical contact with the cathode, wherein at least a portion of at least one of the surfaces includes cobalt.
摘要:
A recording medium, such as a high-density and/or read-only recording medium that has the same or similar physical recording format, including a linking area, in order to improve reproduction compatibility with a high-density and/or rewritable recording medium, and to methods and apparatuses for forming, recording, and reproducing the recording medium.
摘要:
The disclosure includes a system, device, apparatus and programmed medium of measuring thickness of an optical disc by using an interference effect of the optical disc layer. Such a system can include: a spectroscope to separate light, reflected from a surface of an optical disc, into constituent frequencies thereof; an optical intensity measuring unit to measure intensities of the constituent frequencies, respectively, as a first spectrum of data; and a processor to do at least the following, convert the first spectrum data into a second spectrum of values that exhibits variation as a function wavelength and refractive index, transform the second spectrum using a Fast Fourier Transform, and detect a thickness of one or more of the spacer layer and the cover layer, respectively, based upon the transformed spectrum. The disclosed technologies have advantages for high precisely measuring thickness of an optical disc.