| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 369130350 | Specific detail of recording medium | 17 |
| 20090073817 | OPTICALLY-READABLE DISK WITH COPY PROTECTION DEVICE - An optically-readable disk includes a device that disrupts readability of the disk when the disk is spun at an angular velocity substantially greater than required to play the disk in its intended playing device, or when a defined integral of velocity and time is exceeded. The device may include a fluid container that disperses a data-disruptive fluid. The device may include a membrane or layer that is disrupted when the disk is rotated above a defined angular velocity, or when a defined integral of velocity and time is exceeded. The device may include an electro-optical material that is activated by an electrical signal from a controller in response to an input from a sensor responsive to motion of the disk. | 03-19-2009 |
| 20090097365 | Magnetic layer, method of forming the magnetic layer, information storage device including the magnetic layer, and method of manufacturing the information storage device - Provided are a magnetic layer, a method of forming the magnetic layer, an information storage device, and a method of manufacturing the information storage device. The information storage device may include a magnetic track having a plurality of magnetic domains, a current supply element connected to the magnetic layer and a reading/writing element. The magnetic track includes a hard magnetic track, and the hard magnetic track has a magnetization easy-axis extending in a direction parallel to a width of the hard magnetic track. | 04-16-2009 |
| 20090129213 | Optically assisted magnetic recording device with semiconductor laser, optically assisted magnetic recording head and magnetic disk device - The present invention provides a magnetooptic device, a magnetooptic head, and a magnetic disk drive each capable of performing optically assisted magnetic recording and each having a small size, improved recording density, and a higher transfer rate. In a magnetooptic device, a magnetic circuit including a magnetic gap and a thin film magnetic transducer having a coil portion are stacked on the surface of a semiconductor laser. By the arrangement, optically assisted magnetic recording can be performed, small size and light weight are achieved, and higher transfer rate can be implemented. | 05-21-2009 |
| 20090274016 | MAGNETO-OPTICAL DEVICE - A magneto-optical device is disclosed that includes a non-magnetic support body and a fine particle arrangement layer on the non-magnetic support body. The fine particle arrangement layer includes multiple regularly arranged fine metal magnetic particles. In the magneto-optical device, magnetization is generated by applying an external magnetic field to the fine metal magnetic particles, and linearly polarized light is made incident on the fine metal magnetic particles, so that a magneto-optical effect is increased by the interaction between the incident light on the fine metal magnetic particles and the surface plasmon oscillation of the fine metal magnetic particles. | 11-05-2009 |
| 20100097901 | Polarization conserving near field transducer for optical recording on magnetic media - In a particular embodiment, an optical transducer includes at least three optically conductive blades arranged symmetrically about a center gap. The optical transducer is adapted to receive polarized light from a light source and to focus the polarized light onto a recording medium while conserving polarization of the polarized light. | 04-22-2010 |
| 20110235480 | DIRECT WAVEGUIDE LIGHT DELIVERY TO NFT FOR HEAT ASSISTED MAGNETIC RECORDING - A magnetic recording head comprises a write pole having a pole tip adjacent to an air bearing surface, a return pole, an optical near field transducer positioned adjacent the pole tip and an air bearing surface for exposing a portion of a magnetic storage medium to high energy radiation. The energy is directly provided to the near field transducer by a ridge waveguide with tapered coupling elements, by a two dimensional straight or curved waveguide with a beveled end with a metal/dielectric coating for delivering energy to the near field transducer, or by a curved waveguide. The waveguide with tapered coupling elements or with beveled end can be fabricated by means of conventional wafer processing. | 09-29-2011 |
| 20160148641 | INTERLACED MAGNETIC RECORDING IN HAMR DEVICES - A storage device includes a controller that implements an interlaced magnetic recording scheme with prioritized random access. According to one implementation, a controller is configured to write data at a first linear density to alternating data tracks and write data at a second linear density to one or more data tracks interlaced with the alternating data tracks. | 05-26-2016 |
| 20160148643 | VARIABLE WRITTEN TRACK WIDTHS FOR ATTRIBUTE-BASED STORAGE - A storage device controller is configured to select one of multiple written track widths for a storage location based on a write attribute of data to be recorded at the storage location. According to one implementation, the storage device controller is further configured to select a power level for a heat-assisted magnetic recording (HAMR) device based on the write attribute. | 05-26-2016 |
| 369130370 | Tape or card | 2 |
| 20110222379 | METHOD FOR CONTROLLING OVERWRITING OF DATA BY TAPE RECORDING APPARATUS , PROGRAM FOR CONTROLLING OVERWRITING , AND TAPE RECORDING APPARATUS - A data-overwriting technique that facilitates determining whether data is new or old, when reading thereof. A tape recording apparatus includes: a receiving unit for receiving information on overwrite starting position and an overwrite request; a trying unit for trying to determine a beginning position of a data unit based on the information on an overwrite starting position, wherein the data unit is a unit of writing data recorded on a tape medium; an overwrite executing unit for executing overwriting from the determined overwrite starting position in response to a success of the determination by the trying unit; and a type judging unit for judging whether the data unit that is recorded at the overwrite starting position is a null data unit or not in response to a failure of the determination by the trying unit. The trying unit responds to judgment that the data unit is the null data unit by trying to determine a beginning of a data unit following the data unit as the overwrite starting position. | 09-15-2011 |
| 20140233363 | Thin Film Media Structure For Perpendicular Magnetic Recording and Storage Devices Made Therewith - Iron-platinum (FePt) based magnetic recording media structures that provide small grain size and isolated-grain configurations suitable for high-density magnetic recording. In one of the structures, the recording media structure includes a thin film containing grains of L1 | 08-21-2014 |
| 369130380 | Specific detail of layer (e.g., bias or initializing layers, etc.) | 7 |
| 20090080296 | OPTICAL DISC - An optical disc includes an electromagnetic coupling module mounted therein. The electromagnetic coupling module includes a wireless IC chip and a feeder circuit substrate in which a feeder circuit including a resonant circuit having a predetermined resonant frequency is disposed. The electromagnetic coupling module is electromagnetically coupled to a reflective film defining a metal thin film of the optical disc, and the reflective film defines an antenna or radiation pattern of the electromagnetic coupling module. | 03-26-2009 |
| 369130400 | Plural layers having particular order | 3 |
| 20140043947 | Thin Film Structure with Controlled Lateral Thermal Spreading in the Thin Film - An apparatus includes a non-metallic interlayer between a magnetic data storage layer and a heat sink layer, wherein interface thermal resistance between the interlayer and the heat sink layer is capable of reducing heat flow between the heat sink layer and the magnetic data storage layer. The apparatus may be configured as a thin film structure arranged for data storage. The apparatus may also include thermal resistor layer positioned between the interlayer and the heat sink layer. | 02-13-2014 |
| 20140269231 | RADIALLY DEPENDENT THERMAL HEAT RESISTOR LAYER - The embodiments disclose a data storage device including a thickness gradient heat sink layer deposited over a heat sink layer deposited over a substrate, a thickness gradient non-magnetic thermal resist layer deposited over the thickness gradient heat sink layer, and a magnetic layer deposited over the thickness gradient non-magnetic thermal resist layer. | 09-18-2014 |
| 20150029830 | MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE APPARATUS - A magnetic recording medium includes a substrate, a magnetic layer including an alloy having an L1 | 01-29-2015 |
| 369130410 | Plural magnetic layers (e.g., recording and reproducing layers) | 3 |
| 20090040883 | Magnetic track using magnetic domain wall movement and information storage device including the same - Provided are a magnetic track using magnetic domain wall movement and an information storage device including the same. A magnetic track may comprise a zigzag shaped storage track including a plurality of first magnetic layers in parallel with each other, and stacked separate from each other, and a plurality of second magnetic layers for connecting the plurality of first magnetic layers. The information storage device may include the magnetic track having a plurality of magnetic domains, current applying device connected to the magnetic track, and a read/write device on a middle portion of the magnetic track. | 02-12-2009 |
| 20150138939 | DUAL SEGREGANT HEAT ASSISTED MAGNETIC RECORDING (HAMR) MEDIA - In one embodiment, a magnetic media suitable for HAMR recording includes a recording layer having first and second magnetic layers. The first magnetic layer has a first segregant between magnetic grains thereof, the first segregant being primarily C. Moreover, the second magnetic layer is formed above the first magnetic layer. The second magnetic layer has a second segregant between magnetic grains thereof, the second segregant being primarily C and a second component. Additional systems and methods are also described herein. | 05-21-2015 |
| 369130500 | Rare earth or metal alloy | 1 |
| 20150117166 | MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE APPARATUS - A magnetic recording medium includes a substrate, a magnetic layer including an alloy having an L1 | 04-30-2015 |
