摘要:
An apparatus that includes a storage layer and a heating assistance element. The heating assistance element is adjacent to the storage layer or doped into the storage layer. The heating assistance element is configured to enhance spatial confinement of energy from a field to an area of the storage layer to which the field is applied.
摘要:
A disk-layer-configuration judging unit (180) of a recording-and-reproducing apparatus (100) judges which of a one-layer disk (10) and a two-layer disk (20) is a disk in which content data is to be recorded. A system controller (280) sets a recording rate to be a conventional recording rate when the disk-layer-configuration judging unit (180) judges that the disk is the one-layer disk (10) while setting the recording rate to be a recording rate that makes the maximum recordable time twice as much as the maximum recordable time of the one-layer disk (10) when the disk-layer-configuration judging unit (180) judges that the disk is the two-layer disk (20).
摘要:
A recording medium conforming with a specific physical format of Digital Video Disc/Digital Versatile Disc (DVD) or the like is contrived to achieve superior sound quality in audio data recording and reproduction, common usability of data, and enhanced interchangeability of an apparatus. In this recording medium, identification data signifying the existence of recorded data of a second data format such as Direct Stream Digital Disc (DSD) different from a first data format such as DVD is included in physical format management information recorded in a lead-in area. The data of such second data format is recorded in a data area in conformity with the physical format management information. And second data management information of a Table of Contents (TOC) is recorded at a predetermined position to manage an operation of reproducing the data of the second data format.
摘要:
A method for forming a glass substrate comprises the steps of forming a glass blank with opposing substantially planar surfaces and at least one edge, coating the glass blank in silica-alumina nanoparticles, the silica-alumina nanoparticles comprising an inner core of silica with an outer shell of alumina, annealing the coated glass blank to form a conformal coating of silica-alumina around the glass blank, and polishing the coated glass blank to remove the conformal coating of silica-alumina from the opposing substantially planar surfaces thereof.
摘要:
A method for forming a glass substrate comprises the steps of forming a glass blank with opposing substantially planar surfaces and at least one edge, coating the glass blank in silica-alumina nanoparticles, the silica-alumina nanoparticles comprising an inner core of silica with an outer shell of alumina, annealing the coated glass blank to form a conformal coating of silica-alumina around the glass blank, and polishing the coated glass blank to remove the conformal coating of silica-alumina from the opposing substantially planar surfaces thereof.
摘要:
An apparatus that includes a storage layer and a heating assistance element. The heating assistance element is adjacent to the storage layer or doped into the storage layer. The heating assistance element is configured to enhance spatial confinement of energy from a field to an area of the storage layer to which the field is applied.
摘要:
The probability of occurrence of post-recording erasure phenomena in which recorded data is erased is reduced by adding at the end of a sector block a repetition pattern 56 of a minimum bit length for that sector block.
摘要:
In a disk player which plays a disk having first and second areas in which the same contents are recorded with different amounts of information, the disk player includes a playback unit that reads disk information to play the disk, a storage unit that stores disk management information relating to the first and second areas when starting playback of the disk, and a switching instruction unit that, while one area of the first and second areas is played, instructs to play the other area. In response to the switching instruction unit, the disk management information relating to the other area is read from the storage unit, and thus playback of the other area starts.
摘要:
A heat-assisted magnetic recording media structure with exchange-coupled composite layer structure may be utilized in a data storage device. The heat-assisted magnetic recording disk structure can have a FePt-based layer as a storage layer and a FePt-based or a CoPt-based magnetic layer with higher Curie temperature as a write layer. The interface between the write layer and the storage layer may be separated by an exchange control layer. The composite structure can be optimized to reduce jitter for high density data storage by tuning the exchange coupling between the write layer and storage layer.
摘要:
Provided is a method of manufacturing a magnetic disk glass substrate, wherein, in a main surface polishing process, main surface polishing is applied to one of main surfaces of a glass substrate so that the one main surface has a predetermined arithmetic mean roughness, and main surface polishing is applied to the other main surface of the glass substrate so that the other main surface has a roughness which is higher than the arithmetic mean roughness (Ra) of the one main surface and which is low enough to prevent a component forming the magnetic disk glass substrate from being eluted from the other main surface.