Patent application number | Description | Published |
20100039748 | CASE-MOLDED CAPACITOR AND METHOD FOR USING THE SAME - In a case-molded capacitor, an electrode of a capacitor element is connected with a busbar having an electrode terminal for external connection. The capacitor element and the busbar are placed in a metal case having an upper surface opening and are resin molded. A thermally-conductive insulator layer is provided between the capacitor element and a bottom surface of the metal case, hence providing the case-molded capacitor with a heat resistance. | 02-18-2010 |
20110090618 | METALIZED FILM CAPACITOR - A metalized film capacitor includes a first dielectric film, a first metal thin-film electrode provided on a surface of the first dielectric film, a second dielectric film provided on the first metal thin-film electrode, and a second metal thin-film electrode provided on the second dielectric film, such that the second metal thin-film electrode faces the first metal thin-film electrode across the second dielectric film. The surface of the first dielectric film has a surface energy ranging from 25 mN/m to 40 mN/m. The metalized film capacitor exhibits high heat resistance and a preferable self-healing effect. | 04-21-2011 |
20110102966 | MOLDED CAPACITOR AND METHOD FOR MANUFACTURING THE SAME - A molded capacitor includes a capacitor-element assembly, a package covering the capacitor-element assembly, and a supporter embedded in the package. The capacitor-element assembly includes a capacitor element having a first electrode, and a busbar joined to the electrode of the capacitor element. The busbar has a terminal. The package is made of norbornene-based resin and covers the capacitor-element assembly while exposing the terminal of the busbar. The supporter has first and second end section and is made of heat-conductive insulating material. The first end section contacts the capacitor-element assembly. The second end section is exposed from the package. This molded capacitor has high heat resistance and a small, light-weighted body, and can be manufactured inexpensively. | 05-05-2011 |
20120218679 | METALLIZED FILM CAPACITOR AND CASE MOLD TYPE CAPACITOR INCLUDING SAME - A metallized film capacitor includes a dielectric film and two metal vapor-deposition electrodes facing each other across the dielectric film. At least one of the metal vapor-deposition electrodes is made of substantially only aluminum and magnesium. This metallized film capacitor has superior leak current characteristics and moisture resistant performances, and can be used for forming a case mold type capacitor with a small size. | 08-30-2012 |
20140009865 | METALLIZED FILM CAPACITOR AND CASE MOLD TYPE CAPACITOR INCLUDING SAME - A metallized film capacitor includes a dielectric film and two metal vapor-deposition electrodes facing each other across the dielectric film. At least one of the metal vapor-deposition electrodes is made of substantially only aluminum and magnesium. This metallized film capacitor has superior leak current characteristics and moisture resistant performances, and can be used for forming a case mold type capacitor with a small size. | 01-09-2014 |
20140036405 | METALIZED FILM CAPACITOR - A metalized film capacitor includes metalized films, each of which is formed of an insulating film made of dielectric, and a vapor deposited metal electrode formed on an upper surface of the insulating film. An end of the vapor deposited metal electrode extends together with an end of the insulating film, and both the ends are connected to an electrode terminal. The vapor deposited metal electrode of the metalized film includes a center region and a low resistance section that is made of Al—Zn—Mg alloy. The low resistance section is disposed at an end of the electrode and is thicker than the center region. This metalized film capacitor has high humidity resistance. | 02-06-2014 |
20140347780 | FILM CAPACITOR - A film capacitor includes a capacitor element and first and second external electrodes. The capacitor element includes a dielectric film, a first and a second electrode films facing each other across the dielectric film. The first electrode film includes electrode segments arranged in a matrix form, first fuses connecting the electrode segments adjacent to each other in a first direction, and second fuses connecting the electrode segments adjacent to each other in a second direction perpendicular to the first direction. The second fuses are arranged dispersedly in columns constituted by the electrode segments disposed in the second direction. | 11-27-2014 |
20140376154 | METALLIZED FILM CAPACITOR AND CASE MOLD TYPE CAPACITOR INCLUDING SAME - A metallized film capacitor includes first and second metal electrodes, a dielectric film disposed between the first and second metal electrodes, and first and second external electrodes which are connected to the first and second metal electrodes, respectively. At least one of the first metal electrode and the second metal electrode comprises magnesium. The magnesium is distributed unevenly in the at least one of the first metal electrode and the second metal electrode. | 12-25-2014 |
20150138691 | METALLIZED FILM CAPACITOR - A metallized film capacitor includes: a first dielectric film; a first metal deposition electrode provided to a first surface of the first dielectric film; a second dielectric film; and a second metal deposition electrode that is provided to a first surface of the second dielectric film and that faces the first dielectric film. The metallized film capacitor further includes: a low resistance provided above at least one of a first end of the first metal deposition electrode and a first end of the second metal deposition electrode; and a first film that covers at least a portion of the low resistance and that comprises mainly aluminum oxide. | 05-21-2015 |
Patent application number | Description | Published |
20090041507 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME - A developing device of the present invention has a toner supply opening in a first carrying path and in the upstream of the developer carrying direction of a first carrying screw which is further from a developing roller; and a moquette member having feathers on its surface, and being provided, along the developer carrying direction, on the first carrying path. With this arrangement, it is possible to realize a compact developing device having a simple arrangement in which the supplied toner is speedily mixed with the preexisted developer, and the stable toner which is uniformly dispersed and charged can be speedily supplied for development. | 02-12-2009 |
20100126278 | FLAW DETECTION TRACKING DEVICE FOR PIPE OR TUBE AND AUTOMATIC FLAW DETECTING APPARATUS FOR PIPE OR TUBE USING THE SAME - A tracking device is provided with a non-contact type displacement gauge, a positioner which moves a flaw detecting sensor within a plane perpendicular to an axial direction of a pipe or tube, and a positioning controller which controls the positioner. The positioning controller predicts a time until a portion of the pipe or tube whose displacement is measured by the displacement gauge reaches a predetermined position on a straight line extending in a Z-axis direction through a rotational center of the pipe or tube on the basis of the positional relationship between the displacement gauge and the flaw detecting sensor and a rotational speed of the pipe or tube; controls the positioner on the basis of the displacement measured by the displacement gauge and an operational delay time of the positioner in such a manner that the relative position of the flaw detecting sensor to the pipe or tube after the lapse of the predicted time becomes substantially constant in the Z-axis direction; and moves the flaw detecting sensor along the Z-axis direction. The positioning controller performs the same control in an X-axis direction. | 05-27-2010 |
20110081170 | TONER CARTRIDGE, IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - A toner cartridge includes a container body and a screw conveyer section. The screw conveyer section includes a rotation shaft and a toner conveying blade. The toner rotation shaft includes a first rotation shaft portion and a second rotation shaft portion concentrically communicated to the first rotation shaft portion and having a diameter smaller than that of the first rotation shaft portion. The toner conveying blade includes a first blade portion formed on the first rotation shaft portion, and a second blade portion formed on the second rotation shaft portion, a period of a spiral of the second blade portion winding around the second rotation shaft portion being smaller than a period of a spiral of the first blade portion winding around the first rotation shaft portion. | 04-07-2011 |
20110109788 | CAMERA SYSTEM AND INTERCHANGEABLE LENS - There are provided a camera system and an interchangeable lens that are compatible with a contrast detection method. A camera system ( | 05-12-2011 |
20110283798 | ULTRASONIC TESTING METHOD AND APPARATUS - An ultrasonic testing apparatus | 11-24-2011 |
20120067129 | ULTRASONIC TESTING APPARATUS FOR PIPE OR TUBE END PORTION - An ultrasonic testing apparatus for a pipe end portion, which enables accurate ultrasonic testing, comprises an ultrasonic probe disposed under the pipe end portion. The probe | 03-22-2012 |
20130276540 | ULTRASONIC TESTING APPARATUS FOR PIPE OR TUBE END PORTION AND METHOD OF SETTING INITIAL POSITION OF PROBE HOLDER - An ultrasonic testing apparatus includes an ultrasonic probe disposed under an end portion of a pipe laid in the horizontal direction to face the pipe end portion. The probe transmits ultrasonic waves to the end portion of the pipe and receives the ultrasonic waves therefrom. A probe holder housing the probe includes a coupling medium reserver part which surrounds a space between the probe and the end portion of the pipe to contain a coupling medium W. The coupling medium reserver part includes a part body | 10-24-2013 |
20140294436 | IMAGE FORMING APPARATUS - In an image forming apparatus, a fixing drive motor is positioned inside the image forming apparatus and closely to the front surface of the image forming apparatus so as to be laterally to toner cartridges and a waste toner box in a direction parallel to an outer surface of a front housing section. | 10-02-2014 |
20140294447 | IMAGE FORMING APPARATUS - The image forming apparatus ( | 10-02-2014 |
Patent application number | Description | Published |
20080238291 | COMPACT FLUORESCENT LAMP AND LIGHTING APPARATUS - A compact fluorescent lamp includes an arc tube having a bulb with a spiral portion formed in at least a portion thereof, the bulb having an electrode sealed in each of both end portions thereof so as to form a discharge path inside, and both the end portions of the bulb opposing to each other at positions inside a portion having a maximum outer diameter of the spiral portion so that the opposing end portions have a minimum distance of 5 to 15 mm; a lighting device lightening the arc tube; a cover member which supports the arc tube and in which the lighting device is arranged; and a base supported by the cover member. | 10-02-2008 |
20110043121 | LIGHTING CIRCUIT AND ILLUMINATION DEVICE - A lighting circuit according to embodiments includes: a self-hold element connected in series to an AC power source that generates power for lighting an illumination load, together with the illumination load, the self-hold element being configured to control supply of the power provided by the AC power source to the illumination load by the self-hold element being turned on/off; a noise prevention circuit connected in parallel to the self-hold element; and a damping circuit configured to connect a damping resistance to the noise prevention circuit parallely only for a predetermined period from turning-on of the self-hold element, thereby preventing the self-hold element from being repeatedly turned on/off during a period in which the self-hold element is on under normal conditions, due to a transient during power supply. | 02-24-2011 |
20110279062 | DC POWER SUPPLY UNIT AND LED LIGHTING APPARATUS - In one embodiment, a DC power supply unit includes a DC power supply source; a load circuit connected to an output end of the DC power supply source; a load state detection device to detect a load voltage or an electric quantity corresponding to the load voltage; and a control device to receive the detected output of the load state detection device. The control device controls a maximum output voltage of the DC power supply source so that the voltage difference between the maximum output voltage of the DC power supply source and the load voltage at the time of normal operation falls within a predetermined range in which arc discharge is suppressed. | 11-17-2011 |
20120019166 | POWER SOURCE UNIT FOR LED LAMPS, AND LED LAMP SYSTEM - A dedicated power source for LED lamps capable of reliably detecting attachment of an LED lamp is provided. | 01-26-2012 |
20120187864 | LIGHTING DEVICE AND LUMINAIRE - According to one embodiment, a lighting device includes a lighting circuit. The lighting circuit includes a direct-current power supply and a DC-DC converter, and lights an illumination lamp by constant-current control. An output capacitor is connected in parallel to an output end of the DC-DC converter. A capacitance of the output capacitor is set to such a value that a peak value of a pulse-like current flowing when the illumination lamp is instantaneously detached from and attached to the output end of the DC-DC converter is one or more and four or less times a load current of the illumination lamp. | 07-26-2012 |
20120187870 | LIGHTING DEVICE AND LUMINAIRE - According to one embodiment, a lighting device includes a lighting circuit and a control circuit. The lighting circuit includes an output end to which an illumination lamp is connected, and lights the illumination lamp by a direct-current power. The control circuit controls the lighting circuit so that power consumption caused by a contact resistance at a connection part between the illumination lamp and the output end of the lighting circuit during whole light lighting of the illumination lamp does not exceed a specified value set to 8 W or less. | 07-26-2012 |
20120194075 | LIGHTING DEVICE AND LUMINAIRE - According to one embodiment, a lighting device includes a power supply circuit and a control circuit. The power supply circuit lights a light source. The control circuit determines a threshold based on an output from the power supply circuit to the light source, and controls the power supply circuit to cause a protecting operation to be performed when an output voltage of the power supply circuit deviates from the threshold. | 08-02-2012 |
20130107521 | Lighting Device | 05-02-2013 |
20130162155 | LIGHTING CIRCUIT AND ILLUMINATION DEVICE - A lighting circuit according to embodiments includes: a self-hold element connected in series to an AC power source that generates power for lighting an illumination load, together with the illumination load, the self-hold element being configured to control supply of the power provided by the AC power source to the illumination load by the self-hold element being turned on/off; a noise prevention circuit connected in parallel to the self-hold element; and a damping circuit configured to connect a damping resistance to the noise prevention circuit parallely only for a predetermined period from turning-on of the self-hold element, thereby preventing the self-hold element from being repeatedly turned on/off during a period in which the self-hold element is on under normal conditions, due to a transient during power supply. | 06-27-2013 |
20140153249 | Bulb-Type LED Lamp - An LED lamp according to an embodiment includes an LED module, a base body, a first globe, a second globe and a light guide body. In the LED module, a plurality of LEDs are mounted on a substrate. The base body holds the LED module. The first globe is arranged to surround the outer circumference of the substrate. A bore diameter (D | 06-05-2014 |
20150092403 | Light Emitting Module, Tube Type Light Emitting Lamp and Luminaire - The disclosure is to provide a light emitting module that suppress a dark section from forming in an end portion thereof, a tube type light emitting lamp and a luminaire. | 04-02-2015 |
Patent application number | Description | Published |
20090241404 | Trawl-net collecting apparatus of net-mouth inclination maintainable type - There is provided a trawl-net collecting apparatus of net-mouth inclination maintainable type capable of autonomously maintaining a posture thereof. The present invention is a trawl-net collecting apparatus of net-mouth inclination maintainable type in which a trawl net is attached to a substantially rectangular cylindrical frame, the trawl net being formed of an upper net, a lower net, and a pair of side nets, and the trawl net having a shape formed of a body part of a quadrangular trapezoid shape and a cod-end part connected to an end of the quadrangular trapezoidal body part, wherein each of the side nets attached to the frame has a longer side and a shorter side as an upper side and a lower side, and a side defining a net-mouth edge defines a side-net front edge inclination angle (γ), which satisfies a relationship represented by the following expression (1), relative to a bottom side of an isosceles trapezoid having the shorter side as a shorter leg, so that the frame autonomously maintains an inclination angle (β) due to a resistance and a lift of a water flow against the net. | 10-01-2009 |
20090282723 | Trawl net layer-by-layer collecting device - To provide a lightweight trawl net layer-by-layer collecting device capable of autonomously switching opening and closing of a net mouths of trawl nets. The trawl net layer-by-layer collecting device comprises: a rectangular cylindrical frame | 11-19-2009 |
20110025206 | LED LIGHTING EQUIPMENT - Certain embodiments provide an LED lighting equipment including a lighting main body. An LED power device has a DC power source and a DC-DC converter having an input terminal connected to the DC power source and the DC-DC converter having an output terminal. An LED light source has a board and a plurality of LED packages; each including a plurality of LED chips connected in series. The LED packages are mounted on the board and connected in series to the output terminal of the DC-DC converter. | 02-03-2011 |
Patent application number | Description | Published |
20090053758 | Processes for clonal growth of hepatic progenitor cells - A method of propagating mammalian endodermally derived progenitors such as hepatic progenitors, their progeny, or mixtures thereof is developed which includes culturing mammalian progenitors, their progeny, or mixtures thereof on a layer of embryonic mammalian feeder cells in a culture medium. The culture medium can be supplemented with one or more hormones and other growth agents. These hormones and other growth agents can include insulin, dexamethasone, transferrin, nicotinamide, serum albumin, β-mercaptoethanol, free fatty acid, glutamine, CuSO | 02-26-2009 |
20090068735 | METHODS OF ISOLATING BIPOTENT HEPATIC PROGENITOR CELLS - A method of obtaining a mixture of cells enriched in hepatic progenitors is developed which comprises methods yielding suspensions of a mixture of cell types, and selecting those cells that are classical MHC class I antigen(s) negative and ICAM-1 antigen positive. The weak or dull expression of nonclassical MHC class I antigen(s) can be used for further enrichment of hepatic progenitors. Furthermore, the progenitors can be selected to have a level of side scatter, a measure of granularity or cytoplasmic droplets, that is higher than that in non-parenchymal cells, such as hemopoietic cells, and lower than that in mature parenchymal cells, such as hepatocytes. Furthermore, the progeny of the isolated progenitors can express alpha-fetoprotein and/or albumin and/or CK19. The hepatic progenitors, so isolated, can grow clonally, that is an entire population of progeny can be derived from one cell. The clones of progenitors have a growth pattern in culture of piled-up aggregates or clusters. These methods of isolating the hepatic progenitors are applicable to any vertebrates including human. The hepatic progenitor cell population is expected to be useful for cell therapies, for bioartificial livers, for gene therapies, for vaccine development, and for myriad toxicological, pharmacological, and pharmaceutical programs and investigations. | 03-12-2009 |
20090104626 | METHODS OF ISOLATING BIPOTENT HEPATIC PROGENITOR CELLS - A method of obtaining a mixture of cells enriched in hepatic progenitors is developed which comprises methods yielding suspensions of a mixture of cell types, and selecting those cells that are classical MHC class I antigen(s) negative and ICAM-1 antigen positive. The weak or dull expression of nonclassical MHC class I antigen(s) can be used for further enrichment of hepatic progenitors. Furthermore, the progenitors can be selected to have a level of side scatter, a measure of granularity or cytoplasmic droplets, that is higher than that in non-parenchymal cells, such as hemopoietic cells, and lower than that in mature parenchymal cells, such as hepatocytes. Furthermore, the progeny of the isolated progenitors can express alpha-fetoprotein and/or albumin and/or CK19. The hepatic progenitors, so isolated, can grow clonally, that is an entire population of progeny can be derived from one cell. The clones of progenitors have a growth pattern in culture of piled-up aggregates or clusters. These methods of isolating the hepatic progenitors are applicable to any vertebrates including human. The hepatic progenitor cell population is expected to be useful for cell therapies, for bioartificial livers, for gene therapies, for vaccine development, and for myriad toxicological, pharmacological, and pharmaceutical programs and investigations. | 04-23-2009 |
20100197015 | HUMAN LIVER PROGENITORS - Methods of isolating and cryopreserving progenitors from human liver are disclosed which include processing human liver tissue to provide a substantially single cell suspension comprising progenitors and non-progenitors of one or more cell lineages found in human liver; subjecting the suspension to a debulking step, which reduces substantially the number of non-progenitors in the suspension, and which provides a debulked suspension enriched in progenitors exhibiting one or more markers associated with at least one of the one or more cell lineages; and selecting from said debulked suspension those cells, which themselves, their progeny, or more mature forms thereof express one or more markers associated with at least one of the one or more cell lineages. Among these markers are CD14, CD34, CD38, CD45, and ICAM. Hepatic progenitors are characterized as being 6-15μ in diameter, diploid, glycophorin A | 08-05-2010 |
20140302547 | METHODS OF ISOLATING BIPOTENT HEPATIC PROGENITOR CELLS - A method of obtaining a mixture of cells enriched in hepatic progenitors is developed which comprises methods yielding suspensions of a mixture of cell types, and selecting those cells that are classical MHC class I antigen(s) negative and ICAM-1 antigen positive. The weak or dull expression of nonclassical MHC class I antigen(s) can be used for further enrichment of hepatic progenitors. Furthermore, the progenitors can be selected to have a level of side scatter, a measure of granularity or cytoplasmic droplets, that is higher than that in non-parenchymal cells, such as hemopoietic cells, and lower than that in mature parenchymal cells, such as hepatocytes. Furthermore, the progeny of the isolated progenitors can express alpha-fetoprotein and/or albumin and/or CK19. The hepatic progenitors, so isolated, can grow clonally, that is an entire population of progeny can be derived from one cell. The clones of progenitors have a growth pattern in culture of piled-up aggregates or clusters. These methods of isolating the hepatic progenitors are applicable to any vertebrates including human. The hepatic progenitor cell population is expected to be useful for cell therapies, for bioartificial livers, for gene therapies, for vaccine development, and for myriad toxicological, pharmacological, and pharmaceutical programs and investigations. | 10-09-2014 |
Patent application number | Description | Published |
20090287075 | BIOLOGICAL SIGNAL MEASUREMENT SENSOR - A biological signal measurement sensor is to be fixed to a living body with an adhesive. The biological signal measurement sensor includes: a surface, which is to be in contact with a part of the living body; and a first portion, which is opposite to the surface and to which the adhesive is to be attached. At least a part of the first portion has a first patterned indented shape. | 11-19-2009 |
20130083424 | MAGNETIC DISK DEVICE AND HEAD-POSITION CONTROL METHOD - A magnetic disk device includes a magnetic disk on which servo information is recorded, a head to read the servo information of the magnetic disk, and a position control module. When carrying out positioning control of the head, the position control module estimates frequency components of noise in a head positioning control process, using a high-order digital filter that includes first and second variable coefficients that are each based on position error information generated from the servo information read by the head. | 04-04-2013 |
20140016745 | METHOD OF STEEL GRADE DETERMINATION FOR STEEL MATERIAL - The method of steel grade determination for a steel material having a substantially circular cross-section comprise: a detection step in which while a measurement section | 01-16-2014 |
20140022558 | OPTICAL DEVICE - According to one embodiment, an optical device includes emission of an image projecting light source and emission of an optical path length measuring light source are provided by a light projecting device and respective beams are directed to a moveable mirror. In accordance with the movement of moveable mirror, an image projecting light scans a target and an image is displayed. Reflected light is scattered from the target and reaches a photodetector. By calculating the time difference of reference light and reflected light detected by the photodetector, the distance of the optical device and a reflection point of an optical path length measuring light is computed. By combining the computed optical path length data and angle data of the moveable mirror, the reflecting point of the optical path length measuring light is determined. | 01-23-2014 |
Patent application number | Description | Published |
20080199226 | DEVELOPER CONTAINER, DEVELOPER SUPPLY DEVICE, AND IMAGE FORMING APPARATUS - A toner bottle stores toner in a cylindrical section having an inner circumferential surface provided with a plurality of protruding portions raised inward the cylindrical section. When the cylindrical section is driven to rotate on its central axis, the toner is discharged from the cylindrical section via an outlet. When cross-sections perpendicular to the central axis of the cylindrical section are projected from a longitudinal direction of the cylindrical section, the cylindrical section has an inner circumference provided with one or more regions where the protruding portions are not projected. This prevents the toner from making contact with the protruding portions. Therefore, the toner can be conveyed while suppressing the generation of frictional heat by reducing the resistance between the toner and the protruding portions. | 08-21-2008 |
20080298846 | TONER BOTTLE AND APPARATUS FOR IMAGE FORMATION - A toner bottle for containing toner has a cylindrical body and a scraper. The bottle body can be rotated on its axis by a driving source. The scraper is supported movably in the bottle body. The bottle body has an opening and ribs. The toner in the toner bottle is supplied through the opening to a developing unit. When the bottle body rotates, the ribs convey the toner toward the opening. The scraper includes a shaft and a scraping part. The shaft extends over the whole length of the bottle body and supports the scraping part. A portion of the scraping part is in contact with the inner cylindrical surface of the bottle body. When the bottle body rotates, the scraper moves perpendicularly to the axis of the body. | 12-04-2008 |
20090180814 | FLUID CONTAINER DEVICE AND IMAGE FORMING APPARATUS - A toner supply container according to this invention includes a toner containing portion, a support member and a container holding member. The toner containing portion is a cylindrical container having a magnet at an outer periphery thereof and configured to discharge fluid contained therein. The support member supports the toner containing portion for rotation. The container holding member has a counterpart magnet at a position opposed to the former magnet and is configured to hold the toner containing portion supported by the support member. | 07-16-2009 |
20090252539 | TONER HOPPER, DEVELOPING UNIT AND IMAGE FORMING APPARATUS - A toner hopper contains toner supplied from a toner container and supplies the toner to a developing device. The toner hopper includes: a container tank for containing the toner; a carrying screw which is disposed in the container tank and is rotated so as to carry the toner in the container tank; and an elastic member having a first section which is fixed to the container tank and a second section which comes into contact with the carrying screw, the first section being farther from the carrying screw than the second section in a direction perpendicular to an axis line of the carrying screw. According to the arrangement, it is possible to stabilize an amount of toner supplied from the toner hopper to the developing device. | 10-08-2009 |
Patent application number | Description | Published |
20090161501 | FOCUS CONTROL METHOD AND OPTICAL DISC APPARATUS - According to one embodiment, when a focus servo goes off and the distance between an objective lens and a recording layer of an optical disc does not coincide with a focal length of the objective lens, a control voltage or current corresponding to an optical disc wobble stored in a memory is superimposed on a control voltage or current supplied to a driving mechanism to move an objective lens along an optical axis for re-focusing, and the superimposed voltage or current is supplied to the driving mechanism. Therefore, pull-in of a focus servo for re-focusing is possible in a short time. | 06-25-2009 |
20090196153 | TRACKING ERROR SIGNAL GENERATION METHOD AND OPTICAL DISC APPARATUS - According to one embodiment, it is possible to obtain a compensation SPP signal, which compensates a push-pull signal obtained by a ± first-order light or a lens shift compensation signal generated by other method according to phases of a motor to rotate a recording medium, from a MPP signal which is a component indicating the amount of de-tract in a reflected light from any one of recording layers of an optical disc detected by a photodetector, and it is possible to obtain a tracking signal with a high signal-to-noise ratio, by the following equation by using a compensation SPP signal and a MPP signal: | 08-06-2009 |
20110317299 | MAGNETIC RECORDING MEDIUM AND DISK DEVICE - According to one embodiment, a magnetic recording medium on which servo data is recorded by magnetic transfer recording, the medium includes a data recording area in which data is recorded on a plurality of data tracks extending in form of concentric circles, and a servo area comprising the servo data corresponding to the data tracks. The servo data includes a plurality of burst patterns for tracking detection, which are arranged in a circumferential direction of the data tracks, and the burst patterns comprise a number of recording crests which differs depending on a radial position on the magnetic recording medium. | 12-29-2011 |
20110317308 | MAGNETIC RECORDING APPARATUS - According to one embodiment, a magnetic recording apparatus includes a magnetic recording medium for perpendicular magnetic recording system, a magnetic head including a read head to read data from the magnetic recording medium, and an actuator to actuate the magnetic head on the magnetic recording medium. The magnetic recording medium includes a first magnetic pattern recorded in a servo area by applying a magnetic field horizontally to a disk surface, and the first magnetic pattern corresponding to positioning data used for positioning the magnetic head. The magnetic recording medium further includes a second magnetic pattern recorded in the servo area by applying a magnetic field perpendicularly to the disk surface, and the second magnetic pattern corresponding to position correction data used for correcting the positioning data. The position correction data is derived from modulated original position correction data. The original position correction data is created for correcting the positioning data. | 12-29-2011 |
20120162802 | MAGNETIC DISK MEDIUM AND MAGNETIC TRANSFER DEVICE - According to one embodiment, a magnetic disk medium is pre-formatted on both the surfaces by magnetic transfer. Sectors with the same sector number on the front surface and the rear surface of the magnetic disk medium are arranged at positions shifted by a predetermined angle associated in advance with determination target information. | 06-28-2012 |