Class / Patent application number | Description | Number of patent applications / Date published |
369101000 | Invisible radiation (e.g., electron beam or X-ray) | 7 |
20090073849 | HIGH DENSITY DATA STORAGE MEDIUM - A data storage system includes a read/write head having a tip connected to a resistive path locally exerting heat at the tip when an electrical current is applied; and a data storage medium from which information is reproduced by scanning a surface of the medium with a tip positioned in contact therewith, the medium comprising: a substrate; and a polymer recording surface within which data bit values are determined by the topographical state at the bit location, characterized in that the polymer contains thermally reversible crosslinkages. | 03-19-2009 |
20090116363 | INFORMATION STORAGE DEVICE AND STORAGE MEDIA - In an information memory apparatus having minute areas for storing information arranged in x, y and z directions three-dimensionally, parallel rays are irradiated to a memory area MA in a direction perpendicular to a z-axis to take projection images of the memory area MA while rotating the memory area MA around the z-axis little by little. The light rays irradiated at this time have a size which covers at least a direction of an x-y plane of the memory area. A computation unit PU finds data and addresses of minute areas distributed three-dimensionally by performing computation based upon the principle of computer tomography on the projection images. As for data writing, a change is given to optical transmissivity or light emission characteristics by irradiating laser light focused by a lens OL placed outside the memory area to a desired minute area and causing heat denaturation within the pertinent minute area. | 05-07-2009 |
20100195472 | Information recording method and information recording apparatus - To provide a new recording method and recording apparatus with respect to an optical recording medium, the recording method and recording apparatus being able to deal with a high density of an optical recording medium of recent years. Recording of a recording track and a prepit is carried out by sequentially deflecting a single beam. | 08-05-2010 |
20110235492 | OPTICAL HEAD, DIFFRACTION DEVICE, OBJECTIVE LENS, AND OPTICAL DISC APPARATUS - An object of the present invention is to reduce the influence of a stray light incident on a light receiving device by reflection of an unnecessary diffraction light not contributing to write or read on a disc surface at write or read of an optical disc having a large surface reflectivity with respect to an information recording surface. A position in which a diffraction light with an n-order in an advancing path and the n-order in a returning path, reflected on the information recording surface of a first information recording medium, is focused by a condensing lens is different from a position in which a diffraction light different from the n-order diffraction light in at least one of the advancing path and the returning path, reflected on a surface of the first information recording medium, is focused by the condensing lens. | 09-29-2011 |
20110286319 | CHARGED PARTICLE BEAM WRITING APPARATUS, WRITE DATA CREATION METHOD AND CHARGED PARTICLE BEAM WRITING METHOD - A charged particle beam writing apparatus according to an embodiment, includes a storage device configured to store write data which is to be written by using a charged particle beam and in which a plurality of patterns with different writing precision is defined; a cutout unit configured to read data of each pattern from the storage device and to cut out a partial pattern, among a pattern, in the plurality of patterns, whose writing precision is on a low-precision side, positioned within a range of influence of a proximity effect from a region edge of a pattern, in the plurality of patterns, whose writing precision is on a high-precision side; a merge processing unit configured to perform merge processing of a cut-out partial pattern on the low-precision side and the pattern on the high-precision side; and a pattern writing unit configured to write a pattern obtained by the merge processing and a remaining partial pattern on the low-precision side remaining without being merged with the pattern on the high-precision side to a target object by using the charged particle beam under different writing conditions based on data of the pattern obtained by the merge processing and data of the remaining partial pattern. | 11-24-2011 |
20120140609 | OPTICAL WAVEGUIDE CLAD MATERIAL - An apparatus includes a waveguide having a core layer and first and second cladding layers on opposite sides of the core layer, wherein the cladding layers comprise a binary oxide composition. In another example, the cladding layers include a ternary or quaternary combination of oxides and/or oxynitrides. In another example, the cladding layers include a silicon oxynitride. | 06-07-2012 |
20130033975 | REVERSIBLE RECORDING MEDIUM BASED ON OPTICAL STORAGE OF INFORMATION, METHOD OF REVERSIBLE RECORDING ON SUCH A MEDIUM - A reversible recording medium based on optical storage of at least one item of information within a support material, includes at least one layer of support material having: base molecules able to take, in a local zone, a first collective state of molecules able to generate a first signal of second harmonic characteristic of this first collective state of molecules when excited by electromagnetic reading radiation; the base molecules having the first collective state of molecules able to transform, at least in part, into transformed molecules so as to pass to a second collective state of molecules when excited by electromagnetic writing radiation, the molecules having the second collective state of molecules able to generate a second signal of second harmonic characteristic of this second collective state of molecules when excited by the electromagnetic reading radiation. The molecules exhibit a molecular structure based on a coumarin skeleton of Formula (I). | 02-07-2013 |