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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 7907505 | Code disk with a plurality of tracks having different patterns 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 ... | 03/15/2011 |
| 7746757 | Optical disc medium and optical disc device 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 on... | 06/29/2010 |
| 7564773 | Optical disk including address data recording region formed with paired wobbling sections of identical phase 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 havi... | 07/21/2009 |
| 7400570 | Optical disk 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 | 07/15/2008 |
| 7390618 | Manufacturing method of microstructure, manufacturing method and manufacturing device of electronic device 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 plurali... | 06/24/2008 |
| 7319586 | Disk-drive enclosure having drives in a herringbone pattern to improve airflow and method A system and method for an improved multiple hard-disk-drive data-storage enclosure. Some embodiments position drives in counter-rotating pairs, each simultaneously accessing half the data, such that seek-caused actuator rotational-acceleration vibration cause simul... | 01/15/2008 |
| 7298690 | Optical recording medium, master for optical recording medium manufacture, recording and reproducing apparatus, and recording and reproducing method 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 a... | 11/20/2007 |
| 7294281 | Optical information recording medium, original disc for optical information recording medium, and method of manufacturing the same An optical information recording medium, which includes both of a land surface and a groove surface as a recording track and presents high signal quality. The optical information recording medium includes both a land and a groove as the recording track on a substrat... | 11/13/2007 |
| 7239603 | Recording medium with judging area for track area identification based on wobbling polarity A recording and reproducing apparatus of the present invention includes a photo-detector having light receiving sections divided along the track direction of an optical disk. The apparatus also includes a wobble signal processing circuit for generating a wobbling po... | 07/03/2007 |
| 7236449 | Optical recording medium, stamper for producing optical recording medium, recording/reproducing apparatus, and recording/reproducing method 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... | 06/26/2007 |
| 7236432 | Apparatus for reading a data storage medium 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 position... | 06/26/2007 |
| 7193962 | Code disk with a plurality of tracks having different patterns 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 ... | 03/20/2007 |
| 7154843 | Stamper and optical disk with specific dimensions, surface roughness, and a land and a groove provided in a non-signal recording area 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 narro... | 12/26/2006 |
| 7065034 | Optical disc and apparatus for manufacturing a master disc therefor 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 potenti... | 06/20/2006 |
| 7035507 | Manufacturing method for optical element A manufacturing method for an optical element includes providing a base member for an optical element and a cutting tool from which a blade tip part protrudes, forming an inspecting groove on a surface of the base member by the blade tip part of the cutting tool by ... | 04/25/2006 |
| 7005246 | Manufacturing method of microstructure, manufacturing method and manufacturing device of electronic device 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 plurali... | 02/28/2006 |
| 6984434 | Recordable digital video disc 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, a... | 01/10/2006 |
| 6952393 | Recording medium and a recording system for the recording medium 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... | 10/04/2005 |
| 6937556 | Optical recording medium including a wobbled groove with address information recorded on the land region adjacent the groove 1 An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical re... | 08/30/2005 |
| 6898031 | Method for replicating magnetic patterns on hard disk media 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, wh... | 05/24/2005 |
| 6887652 | High density optical disk, apparatus for reproducing optical disk and method for producing optical disk master 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 ... | 05/03/2005 |
| 6882615 | Optical disc and apparatus for manufacturing a master disc therefor 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 potenti... | 04/19/2005 |
| 6872511 | Method for forming micropatterns 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 mo... | 03/29/2005 |
| 6874156 | Optical information recording medium 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 t... | 03/29/2005 |
| 6837072 | Rewritable optical recording medium and manufacturing method and apparatus therefor 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 wh... | 01/04/2005 |
| 6785220 | Optical recording medium having mark and space portions based on frequency band of RF signal A recording medium includes a lead-in area which includes a control data area and an information data area in which information data is to be recorded. In this recording medium, a groove track in the control data area is divided into a plurality of mark portions and... | 08/31/2004 |
| 6773782 | Magnetic memory medium having a magnetic film laminated on a substrate and a non-magnetic film formed thereon, and method of manufacturing the same The surface of a disk medium includes a substrate whose surface includes grooves and lands. A non-magnetic underlayer and a magnetic recording layer are formed on the substrate. Smoothing non-magnetic film fills the grooves, which are covered with the non-magnetic u... | 08/10/2004 |
| 6731589 | Substrate for optical recording media, optical recording medium, manufacturing process for optical recording media, and optical recording/reproducing method According to the present invention, when a land-groove recording method is adopted, thermal crosstalk between a land and an adjoining groove is suppressed effectively. Inhomogeneity of a recording layer between the land and groove is suppressed effectively. A substr... | 05/04/2004 |
| 6728196 | Reverse optical mastering for data storage disks 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 replic... | 04/27/2004 |
| 6724717 | Optical recording disc An optical disc including a substrate having a top surface provided with a ROM area and a RAM area, and a recording layer provided on the substrate. The ROM area is provided with pre-grooves each having a bottom surface and wherein the RAM area is provided with pre-... | 04/20/2004 |
| 6620480 | Pre-engraved substrate for magnetic, magneto-optical, or phase transition optical disc The invention concerns a pre-engraved substrate for a memory disc recordable by magnetic, magneto-optical or phase transition constraint, its manufacturing method and the resulting disc. Said pre-engraved substrate comprises a support (1) having at its su... | 09/16/2003 |
| 6618350 | Rewritable optical recording medium and manufacturing method and apparatus therefor 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... | 09/09/2003 |
| 6558774 | Multiple-layer backcoating for magnetic tape A magnetic tape comprises a substrate having on one side thereof a magnetic layer serving as a recording surface, and on the other side thereof at least two layers containing inorganic particles which serve as a non-recording surface, wherein said magneti... | 05/06/2003 |
| 6535477 | Optical recording medium having groove and land tracks, and method of manufacturing the same At least a portion of groove tracks in a information-data recording region of an optical recording medium comprises a plurality of groove portions separated by groove-absent portions in a rotational direction of the optical recording medium, each of the m... | 03/18/2003 |
| 6510126 | Optical disc having textured structure, and a method of manufacturing the optical disc An optical disc for an optical near-field recording having a surface with a textured structure formed with a plurality of bumps and craters, and a method of manufacturing the optical disc. An optical flying head has a slider which contacts the bumps when ... | 01/21/2003 |
| 6466538 | Optical recording medium having disconnected land and groove forming control portion An optical recording medium, in which a signal is recorded in both of a groove and a land, has a disconnected portion of a predetermined interval in the groove and the land so that a control signal is detected by this disconnected portion.... | 10/15/2002 |
| 6288998 | Optical disk and manufacturing method of original optical disk An original optical disk which is suitable for mass production and facilitates the densification of the optical disks by improving the transferability and the releaseability of an optical disk substrate with respect to a stamper, comprises concavities whi... | 09/11/2001 |
| 6254966 | Information recording mediums, supporter used in the mediums, manufacture methods of the supporter, manufacturing apparatus of the supporter and stampers for producing the mediums An information recording medium and a supporter used for the information recording medium capable of recording a land/groove recording by using a high density recording technique such as a super-resolution, resulting in a high density recording. An inform... | 07/03/2001 |
| 6224959 | Optical disc Prepits in a sector header area are arranged on center lines of groove tracks or land tracks, and header signals are played back in a drive by using sum signals of split sensors, thereby providing resistance to disc tilt or track offset and improving marg... | 05/01/2001 |
| 6101163 | Optical disc apparatus with reduced leakage of wobble signal to reproduction signal The invention relates to an optical disc apparatus more particularly relates to an optical disc apparatus which is suitably applied to an magneto-optic disc apparatus to reduce leakage of wobble signal to reproduction signal. To achieve the object, the si... | 08/08/2000 |
