Patents Issued in September 25, 2008
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Publication number: 20080231969Abstract: A zoom lens system includes a rear lens group having in order from an object side, a first lens unit G1 having a positive refracting power, a second lens unit G2 having a negative refracting power, and a third lens unit G3 having a positive refracting power, and an aperture stop S which is disposed between the second lens unit G2 and the third lens unit G3. At the time of zooming from a wide angle end to a telephoto end, when focused on an object at a longest distance, each of the first lens unit G1, the second lens unit G2, and the third lens unit G3 moves such that a distance between the first lens unit G1 and the second lens unit G2 is widened (increased), and a distance between the second lens unit G2 and the third lens unit G3 is narrowed (decreased). The aperture stop S moves such that a distance of the aperture stop S from the second lens unit becomes small (is decreased).Type: ApplicationFiled: March 13, 2008Publication date: September 25, 2008Inventor: Tomoyuki Satori
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Publication number: 20080231970Abstract: A drive system and methods thereof include at least one actuator assembly that detachably engages a moveable system and at least one control system. The control system voltage biases the actuator assembly in at least one direction at a rate which causes the at least one actuator assembly to slip with respect to the detachably engaged moveable system. The control system also voltage biases the actuator assembly in at least one other direction at a rate which causes the at least one actuator assembly to stick and move with respect to the detachably engaged moveable system.Type: ApplicationFiled: March 19, 2008Publication date: September 25, 2008Applicant: NEW SCALE TECHNOLOGIESInventor: David A. Henderson
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Publication number: 20080231971Abstract: The present invention relates to a 3-dimensional image detector adapted to simultaneously detect images of an object viewed from multi-directions, including: a lens barrel; a refraction section mounted at a front end side of the lens barrel; a lens section mounted at the rear of the refraction section; and an image-detecting section mounted at the rear of the lens section for acquiring an image passed through the refraction section and the lens section.Type: ApplicationFiled: July 10, 2006Publication date: September 25, 2008Inventors: Kwang-Don Park, Jong-Hwa Choi
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Publication number: 20080231972Abstract: An on-vehicle camera lens glass material satisfies at least one of conditions in which a measurement result in water resistance based on a powder method prescribed by Japanese Optical Glass Industrial Standard is 1st Class, a measurement result in Knoop hardness based on a measurement method prescribed by Japanese Optical Glass Industrial Standard is 6th Class or higher, a measurement result in solarization based on a measurement method prescribed by Japanese Optical Glass Industrial Standard is 2% or less, and a measurement result in average linear expansion coefficient based on a measurement method prescribed by Japanese Optical Glass Industrial Standard is 100×10?7° C.?1 or less.Type: ApplicationFiled: March 19, 2008Publication date: September 25, 2008Applicant: HOYA CORPORATIONInventors: Yoichi HACHITANI, Kazuo TACHIWANA
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Publication number: 20080231973Abstract: A mechanism is disclosed for incorporation into automatic microscope which permits the interchanging of optical path components such as objective lens assemblies, filters, and imaging devices. The mechanism features good placement accuracy and repeatability to permit the maintenance of system calibrations.Type: ApplicationFiled: August 2, 2007Publication date: September 25, 2008Applicant: Ikonisys, Inc.Inventor: Wei Guo
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Publication number: 20080231974Abstract: Provided are a lens driving motor and an elastic member of the lens driving motor. The elastic member of a lens driving motor, the elastic member includes a first spring and a second spring. The second spring is different from the first spring and disposed together with the first spring on one side of a carrier to support the carrier. A first lead line of a coil and a first external power source are connected to the first spring, and a second lead line of the coil and a second external power source are connected to the second spring to supply power to the coil. Since the carrier can be assembled to other part after a (+) lead line and a (?) lead line of the coil are connected to the first and second springs, respectively, using solder, a process is simple and convenient.Type: ApplicationFiled: November 29, 2006Publication date: September 25, 2008Inventor: Soo Jin Jung
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Publication number: 20080231975Abstract: A voice coil motor type focusing actuator, which includes a fixed unit, the fixed unit comprises a receiving chamber, a slide fitting channel, a first coil, and a magnet. A movable unit, the movable unit is received inside the receiving chamber of the fixed unit, having a first magnetic conducting flange being affected by the first coil and magnet of the fixed unit, a lens receiving means, a slide fitting rail, the movable unit is movable relative to the fixed unit to define an axial line.Type: ApplicationFiled: March 17, 2008Publication date: September 25, 2008Applicant: TRICORE CORPORATIONInventors: Jen-Chieh Hou, Chin-Chieh Liu, Chin-Hsing Ho
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Publication number: 20080231976Abstract: A security device comprises at least two regions, each region comprising a prismatic surface structure defining an array of substantially planar facets. Each region forms a reflector due to total internal reflection when viewed at least one first viewing angle and is transparent when viewed at least one second viewing angle. The said at least one first viewing angle of one region is different from the at least one first viewing angle of the other region. Furthermore, a security device comprising an asymmetrical or truncated prismatic surface structure is located in a transparent area of an article.Type: ApplicationFiled: March 7, 2006Publication date: September 25, 2008Inventors: Lawrence George Commander, Christopher John Eastell, Roland Isherwood
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Publication number: 20080231977Abstract: A reflective layer for attenuating electromagnetic radiation, the layer comprising at least one reflective component, the latter being selected from the group containing the following substances: carbon particles or fibers, in particular carbon black and/or graphite and/or an electrically conductive graphite compound, metal particles and/or fibers, in particular copper, aluminum, steel, titanium and/or iron particles of fiber and metal alloy particles. The reflective layer is characterized in that it attenuates electromagnetic radiation in a 200 Hz to 10 Ghz range by more than 10 Db, that it is watertight and permeable to water vapor, in addition to being resistant to the elements and designed to produce a potential compensation. The invention also relates to a method for assembling the reflective layer.Type: ApplicationFiled: August 12, 2004Publication date: September 25, 2008Inventors: Gilles Schwaab, Jorn Schroer, Bjorn Lunau
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Publication number: 20080231978Abstract: A mirror is combined with a mirror decoration. The mirror decoration may be secured to the mirror. The mirror decoration is comprised of one or more mirror decoration pieces. The one or more mirror decoration pieces are adapted to be assembled on the mirror to form one or more representations. A user in front of the mirror can view himself or herself within a composite image comprised of his or her reflected image in the mirror and a representation created by the mirror decoration. The one or more pieces of each mirror decoration may be used interchangeably with other pieces from the same mirror decoration or with other pieces from other mirror decorations, so as to form one or more representation.Type: ApplicationFiled: August 16, 2006Publication date: September 25, 2008Inventor: Lynn M. Pierce
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Publication number: 20080231979Abstract: A Low-E glass includes a glass substrate and a multilayer Low-E film formed on at least one surface of the glass substrate. The multilayer Low-E film includes a number of high refractive index layers and a number of low refractive index layers stacked on one another. An innermost layer contacting with the glass substrate is the high refractive index layer. A total number of layers of the multilayer Low-E film is in a range from 30 to 40.Type: ApplicationFiled: December 12, 2007Publication date: September 25, 2008Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventor: Ga-Lane Chen
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Publication number: 20080231980Abstract: A mirror system for a tractor with an articulated trailer includes a mirror housing. The mirror housing is attached to the front end of the tractor on the passenger side. The mirror housing has a planar mirror. The planar mirror is adapted to move. The planar mirror moves allowing continuous observation of the passenger side rear corner of the trailer by a driver.Type: ApplicationFiled: May 29, 2008Publication date: September 25, 2008Inventor: Harry A. Beale
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Publication number: 20080231981Abstract: A partial curved on-vehicle rear view mirror, wherein a center main portion (1) is formed in a flat surface, but an outer portion (2) is formed in a gentle convex surface toward the outside, a lower portion (4) is also formed in a gentle convex surface toward the lower side, and an inner portion (3) is also formed in a convex surface toward the inside so that the view of the mirror can be safely and efficiently increased in each direction. Since the center main portion (1) is formed in the flat surface, the safety of the operations of automobiles, motorcycles, and so on can be sufficiently increased by sufficiently expanding the rear view to the sides and also expanding the view in the lower side while sufficiently securing visual stability.Type: ApplicationFiled: January 25, 2005Publication date: September 25, 2008Inventor: Fumio Wada
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Publication number: 20080231982Abstract: It is an object of the invention is to provide an optical reflector having a directivity of reflection and a display device using it. Depressions of a projection/depression forming member (46) is relatively spread in the right-and-left direction of a display surface. The depressions of the member (46) are provided in such a manner that their average diameter in the right-and-left direction of the display surface is larger than that in the up-and-down direction of the display surface and their average pitch in the right-and-left direction of the display surface is greater than that in the up-and-down direction of the display surface. When a light enters into a surface of a reflective film (48), the light is reflected in the up-and-down direction more selectively.Type: ApplicationFiled: April 29, 2008Publication date: September 25, 2008Inventor: Naoki SUMI
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Publication number: 20080231983Abstract: In the present invention, a step portion for mounting a row bar is provided at a table stepping down from the face of the table, and by lowering a pair of hooks acrossing over the step portion in its width direction, a row bar held by the hooks is mounted on the step portion. Further, while interposing the row bar mounted on the step portion between a pair of hooks and a side face of the step portion, the side in longitudinal direction of the row bar and the bottom face thereof are butted to the bottom face and the standing up side face of the step portion to position two axes of the row bar among XYZ directions, successively, positioning of the row bar in one remaining direction along longitudinal direction of the row bar mounted on the step portion is performed by moving the table in the one remaining axial direction.Type: ApplicationFiled: March 20, 2008Publication date: September 25, 2008Inventors: Teruaki Tokutomi, Yoshinori Kitano
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Publication number: 20080231984Abstract: A servo writer that writes servo information onto a disk of a hard disk drive. The writing of the servo can be synchronized by a clock track that contains a clock read back signal. The clock read back signal is differentiated by a differentiator circuit. A clamping circuit clamps the clock read back signal to minimize signal ringing, undershoot and overshoot phenomena in the signal.Type: ApplicationFiled: March 21, 2007Publication date: September 25, 2008Inventors: Sooyoul Hong, Joe Bragg
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Publication number: 20080231985Abstract: A magnetic head structure is disclosed which can avoid the problem of side erasing regardless of whether the skew angle is assigned to the positive side or negative side while ensuring write magnetic field intensity. The magnetic head includes at least two main magnetic poles having a single taper shape as a plane shape of a tip thereof opposite to a recording medium and axially symmetrically disposed with respect to a longitudinal direction of a slider, a return yoke for returning a write magnetic field generated by the main magnetic poles, and thin-film coils assigned to each of the main magnetic poles.Type: ApplicationFiled: December 4, 2007Publication date: September 25, 2008Applicant: Fujitsu LimitedInventor: Makoto Okamoto
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Publication number: 20080231986Abstract: An information recording/reproducing device according to an example of the present invention includes a first head and a second head each having a conductive region formed of a conductive material, a recording medium having a data area from which data is read by the first head, and a servo burst area from which a servo burst signal is read by the second head, a driver for positioning the first head and the recording medium based on the servo burst signal, and a resistance element for covering a surface of the conductive region of the second head.Type: ApplicationFiled: March 19, 2008Publication date: September 25, 2008Inventors: Shinya Aoki, Koichi Kubo, Junichi Ito, Junichi Akiyama
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Publication number: 20080231987Abstract: A disk cartridge comprises a disk (1) having a central hub (4) for engagement with a disk drive. The disk is accommodated in a housing (2). The housing and disk are dimensioned such that there is limited clearance in a direction parallel to and perpendicular to the plane of the disk. The cartridge comprises a clamping member (11), such as a magnet, to clamp the disk to one side of the cartridge housing when the cartridge is free from the disk drive. The housing and the disk have co-operating centering members (13, 14), preferably near the center of the disk, so as to center the disk with respect to the cartridge housing when the disk is clamped to the housing by the clamping member. In this way, the disk is always in the correct position for a next engagement by the disk drive.Type: ApplicationFiled: January 14, 2005Publication date: September 25, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONIC, N.V.Inventor: Waltherus Cornelis Jozef Bierhoff
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Publication number: 20080231988Abstract: A storage cartridge retention device employs a deep storage slot for storing one or more storage cartridge(s) through its front opening and biases the stored storage cartridge(s) in a direction of its front opening. The storage cartridge retention device further employs a retaining gate external to the deep storage slot and movable relative to the front opening of the deep storage slot between a retaining position and a releasing position. The retaining position engages a front storage cartridge to retain the storage cartridge(s) within the deep storage slot based on the bias of the storage cartridge(s) in the direction of the front opening of the deep storage slot, and the releasing position disengages the front storage cartridge to facilitate movement of the one storage cartridge(s) within the deep storage slot based on the bias of the storage cartridge(s) in the direction of the front opening of the deep storage slot.Type: ApplicationFiled: February 14, 2007Publication date: September 25, 2008Applicant: International Business Machines CorporationInventors: Shawn M. Nave, Raymond Yardy
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Publication number: 20080231989Abstract: An object of the present invention is to provide a rotor magnet that is capable of adjusting attraction of magnet that is mounted in a spindle motor, a spindle motor including the same, a recording and reproducing apparatus, and a jig for manufacturing the same, with a simple configuration. A rotor magnet 7 is an approximately annular member that is attached to a rotor hub 6 rotating around a shaft 1 forming a part of a spindle motor 20. The rotor magnet 7 is magnetized such that magnetization properties of axially top and bottom surfaces 7b and 7c of the rotor magnet 7 are different from each other.Type: ApplicationFiled: March 21, 2008Publication date: September 25, 2008Inventors: Yoichi OKI, Masahiro JONO
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Publication number: 20080231990Abstract: A storage medium device in which one or more storage media used for storing data can be mounted includes a drive unit for rotating the storage medium, and a hub that permits stacking of multiple storage media, the hub being coupled to the drive unit. A clamp is secured by a load applied to the storage media which passes through the hub. The clamp includes an upper surface having a mechanism for fixture to the hub, a weld part for welding to the storage media and applying a load to the storage media, and a sidewall forming a cylinder around the hub. The sidewall having openings, and joining the upper surface and the weld part. The clamp is particularly useful when less than all of the media the storage device is designed to accommodate are provided in the storage device.Type: ApplicationFiled: March 6, 2008Publication date: September 25, 2008Applicant: FUJITSU LIMITEDInventor: Motoyuki Dohya
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Publication number: 20080231991Abstract: Method of manufacturing a magneto-optical device, wherein at least one coil (3) is embedded in an oxide layer (2), wherein the oxide layer (2) is provided with at least one aperture (4). Wherein said aperture (4) is etched selectively in said oxide layer (2) with the use of a sloping side wall (6) of at least one turn (6) of said coil (3).Type: ApplicationFiled: January 7, 2005Publication date: September 25, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONIC, N.V.Inventor: Rudolf Johan Maria Vullers
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Publication number: 20080231992Abstract: A method for forming a protective bilayer on a magnetic read/write head or magnetic disk. The bilayer is formed as an adhesion enhancing and corrosion resistant underlayer and a protective diamond-like carbon (DLC) overlayer. The underlayer is formed of transition metal oxynitride, having the general formula MeOxNy, where Me represents a single element or an alloy formed with two or more of the following transition metal elements: Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W, here x can be within the range between 0 and 3 and y is in the range between approximately 0 and 2 By adjusting the values of x and y the adhesion underlayer contributes to such qualities of the protective bilayer as stress compensation, chemical and mechanical stability and low electrical conductivity. Various methods of forming the adhesion layer are provided, including reactive ion sputtering, plasma assisted chemical vapor deposition, pulsed laser deposition and plasma immersion ion implantation.Type: ApplicationFiled: March 21, 2007Publication date: September 25, 2008Inventors: Shide Cheng, Zhu Feng, Ellis T. Cha
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Publication number: 20080231993Abstract: The present invention relates to a head slider used for a magnetic storage device. The head slider includes a light emission device, and an optical absorption device disposed at a position capable of absorbing energy of light emitted by the light emission device.Type: ApplicationFiled: October 19, 2007Publication date: September 25, 2008Applicant: Fujitsu LimitedInventor: Toshiyuki Matsumura
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Publication number: 20080231994Abstract: Embodiments of the present invention provide a perpendicular recording magnetic head having a narrow track width, high recording magnetic field intensity, and a good recording magnetic field distribution. According to one embodiment, a perpendicular recording magnetic head includes a read section and a write section. The write section includes a main magnetic pole layer, a lower sub magnetic pole layer, an upper sub magnetic pole layer, a pedestal magnetic layer, and a coil conductor generating a magnetic flux in the main magnetic pole layer. The write section further includes lower and upper auxiliary magnetic pole layers disposed on a leading side and a trailing side, respectively, relative to a medium moving direction, adjacent to the main magnetic pole layer. The lower and upper auxiliary magnetic pole layers are retracted from an air bearing surface. The upper auxiliary magnetic pole layer is retracted from the air bearing surface less than the lower auxiliary magnetic pole layer.Type: ApplicationFiled: March 24, 2008Publication date: September 25, 2008Inventors: Wataru Kimura, Tadayuki Iwakura, Yoji Maruyama
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Publication number: 20080231995Abstract: A wrapper type combined magnetic energy generator and a magnetic energy lamp of the present invention belong to the field of illumination. Especially, it is a magnetic energy generator used in the magnetic energy lamp that can produce the electromagnetic energy to excite the illuminative devices. The magnets of the magnetic energy generator are two split type combined magnets. More than one flute is provided on one side of one magnet and the flutes of the two magnets correspond to each other. The fixed spaces are produced between the two flutes of the two magnets. The spaces are communicated with the two flutes to be located exactly. The lamp body of the magnetic energy lamp is provided and fixed on the magnetic energy generator. These two split type combined magnets of the magnetic energy generator wrap the hollow lamp body of the magnetic energy lamp, respectively. The structure of the present invention is simple. It can be made easily and its cost is low.Type: ApplicationFiled: December 20, 2005Publication date: September 25, 2008Inventor: Jin Li
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Publication number: 20080231996Abstract: Two magnet pieces of rectangular prism or parallelepiped prism shape are disposed on a yoke in an angle array to construct a magnetic circuit for a voice coil motor. The magnetic circuits facilitate positioning and holding of a moving coil, and the voice coil motor is improved in positioning precision of a magnetic head.Type: ApplicationFiled: March 19, 2008Publication date: September 25, 2008Inventors: Hiroyuki YAMADA, Daiki Kato, Keiji Nagamiya
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Publication number: 20080231997Abstract: A magnet of rectangular prism or parallelepiped prism shape is disposed on a yoke to construct a magnetic circuit for a voice coil motor. The magnetic circuits facilitate positioning and holding of a moving coil, and the voice coil motor is improved in positioning precision of a magnetic head.Type: ApplicationFiled: March 19, 2008Publication date: September 25, 2008Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Hiroyuki YAMADA, Daiki Kato, Keiji Nagamiya
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Publication number: 20080231998Abstract: A magnetoresistive effect element includes a magnetization fixed layer having substantially fixed magnetization direction. A magnetization variable layer has a variable magnetization direction, consists of a magnetic alloy that has a BCC structure and is expressed by Fe1-x-yCoxNiy (0?x+y?1, 0?x?1, 0?y?1), and contains at least one additive element of V, Cr, and Mn in a range of 0<a?20 at % (a is a content). An intermediate layer is disposed between the magnetization fixed layer and the magnetization variable layer and consists of a nonmagnetic material. The magnetization direction of the magnetization variable layer is switched by a bidirectional current passing through the magnetization fixed layer, the intermediate layer, and the magnetization variable layer.Type: ApplicationFiled: September 20, 2007Publication date: September 25, 2008Inventors: Masatoshi YOSHIKAWA, Tadashi Kai, Toshihiko Nagase, Eiji Kitagawa, Tatsuya Kishi, Hiroaki Yoda
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Publication number: 20080231999Abstract: A tunneling magnetoresistive device and a magnetic head including the tunneling magnetoresistive device are provided. The tunneling magnetoresistive device includes a pinned layer and a free layer formed on either side of a tunneling barrier layer, wherein the tunneling barrier layer includes Te—O.Type: ApplicationFiled: December 7, 2007Publication date: September 25, 2008Applicant: Samsung Electronics Co., Ltd.Inventors: Eun-sik Kim, Kook-hyun Sunwoo, Jongill Hong, In-jun Hwang, Hyoung-joon Choi
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Publication number: 20080232000Abstract: A magnetic write head for perpendicular magnetic recording that is resistant to write pole and trailing shield protrusion. The write pole includes a magnetic return pole that is magnetically connected with the trailing shield, the return pole being resistant to deformation or recession such as from mechanically abrasive slider cleaning operations such as soda blast.Type: ApplicationFiled: February 15, 2007Publication date: September 25, 2008Inventors: Eric Wayne Flint, Wen-Chien David Hsiao, Edward Hin Pong Lee, Michael Ming Hsiang Yang
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Publication number: 20080232001Abstract: A magnetic write head for data recording having a magnetic write pole with a stepped magnetic shell structure that defines a secondary flare point. The secondary flare point defined by the magnetic shell portion can be more tightly controlled with respect to its distance from the air bearing surface (ABS) of the write head than can a traditional flare point that is photolithographically on the main pole structure. This allows the effective flare point of the write head to be moved much closer to the ABS than would otherwise be possible using currently available tooling and photolithography techniques. The write head may also include a magnetic trailing shield that wraps around the main pole portion.Type: ApplicationFiled: March 8, 2007Publication date: September 25, 2008Inventors: Christian Rene Bonhote, Thomas Dudley Boone, Quang Le, Jui-Lung Li, Jeffrey S. Lille, Scott Arthur MacDonald, Neil Leslie Robertson, Xhavin Sinha, Petrus Antonius Van Der Heijden
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Publication number: 20080232002Abstract: A magnetic tunnel junction (MTJ) structure is of the type having a tunnel barrier positioned between a fixed ferromagnetic layer and a free ferromagnetic layer, the tunnel barrier includes a first barrier layer contacting either the fixed ferromagnetic layer or the free ferromagnetic layer. The first barrier layer transmits a high spin polarization and is selected from the group consisting of metal oxides, metal nitrides, and metal oxynitrides. The second barrier layer, which contacts the first barrier layer, has a low barrier height and is selected from the group consisting of metal oxides, metal nitrides, and metal oxynitrides.Type: ApplicationFiled: March 22, 2007Publication date: September 25, 2008Applicant: FREESCALE SEMICONDUCTOR, INC.Inventors: Phillip G. Mather, Renu W. Dave, Frederick B. Mancoff
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Publication number: 20080232003Abstract: An underlying layer (2) made of NiFeN is disposed over the principal surface of a substrate. A pinning layer (3) made of antiferromagnetic material containing Ir and Mn is disposed on the underlying layer. A reference layer (4c) made of ferromagnetic material whose magnetization direction is fixed through exchange-coupling with the pinning layer directly or via another ferromagnetic material layer, is disposed over the pinning layer. A nonmagnetic layer (7) made of nonmagnetic material is disposed over the reference layer. A free layer (8) made of ferromagnetic material whose magnetization direction changes in dependence upon an external magnetic field, is disposed over the nonmagnetic layer.Type: ApplicationFiled: March 3, 2008Publication date: September 25, 2008Applicant: FUJITSU LIMITEDInventors: Takahiro IBUSUKI, Masashige SATO, Shinjiro UMEHARA
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Publication number: 20080232004Abstract: An assembly comprising a number of superconductive coils, at least one quench heater arranged to heat the superconductive coil(s) in the event that at least part of at least one of the coils enters a quenched state; means for transferring energy from the coil(s) to the heater(s) in the event that at least part of at least one of the coils enters a quenched state; wherein the means for transferring energy from the coil(s) to the heater(s) includes a series capacitance, through which the energy transferred must pass.Type: ApplicationFiled: May 31, 2005Publication date: September 25, 2008Applicant: Siemens Magnet Technology Ltd.Inventor: Hugh Alexander Blakes
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Publication number: 20080232005Abstract: A method for protecting an electrical generator which includes providing an electrical generator which is normally synchronously operated with an electrical power grid; providing a synchronizing signal from the electrical generator; establishing a reference signal; and electrically isolating the electrical generator from the electrical power grid if the synchronizing signal is not in phase with the reference signal.Type: ApplicationFiled: March 20, 2007Publication date: September 25, 2008Inventors: Barry W. Kuehnle, Jeffrey B. Roberts, Ralph W. Folkers
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Publication number: 20080232006Abstract: A device for reducing Geomagnetically-Induced Currents (GIC) in transformer apparatus of an AC power system that comprises a resistor (R10) in parallel with a protective varistor (V10) forming a passive-circuit arrangement. Such passive-circuit arrangement is connected on one end (N) to the neutral of the transformer and grounded on the other end (G). The combination of these elements produces a conductive path from said neutral to ground resulting in a proper reduction of said GIC currents, while substantially sustaining the neutral-grounding characteristics of said transformer.Type: ApplicationFiled: March 24, 2007Publication date: September 25, 2008Inventors: Vanessa de los Angeles Ramirez, Alberto Raul Ramirez
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Publication number: 20080232007Abstract: A leakage current protection device with a single laminated magnetic core transformer that is formed by punch pressing an amorphous metal material, or a nanocrystalline soft metal material, in a high punch velocity press to form the ring laminations for the magnetic core. In a ground fault circuit interrupter, the single laminated magnetic core transformer serves as the input sensor for both the current imbalance detection circuitry and the low impedance ground fault protection circuitry.Type: ApplicationFiled: March 20, 2008Publication date: September 25, 2008Inventors: Rodica Musat, Frank A. Raneiro, Thomas H. Rooney
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Publication number: 20080232008Abstract: An antenna for use in a conveyor system in which items on which radio frequency identification tags are disposed are moved on a conveyor along a path of travel, includes a ground plane, a substrate having a bottom surface received adjacent the ground plane, at least one patch element disposed on a top surface of the substrate, a cover received adjacent the top surface of the substrate, and a front static conductive strip disposed along a front edge of the cover. The antenna is disposed beneath the conveyor and a front edge of the antenna is transverse to the path of travel. The front static conductive strip is electrically connected to the ground plane such that an electrostatic discharge event adjacent the front static conductive strip is discharged to the ground plane.Type: ApplicationFiled: March 22, 2007Publication date: September 25, 2008Inventors: Peter J. Goidas, Raymond R. Hillegass, Zhong-Min Liu
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Publication number: 20080232009Abstract: When a manufacturing process becomes finer and a threshold value drops, a leakage current generates in a MOS transistor that is normally in an off-state. In order to suppress an influence of a leakage current that is generated in a protection transistor that constitutes a protection circuit on the internal circuit, an adjustor circuit that forms a transit path of the leakage current is disposed within the protection circuit, and a monitor circuit having the same circuit configuration as a configuration of the protection circuit is disposed to control an impedance of the transit path in the protection circuit and the monitor circuit so as to allow the leakage current to flow through the transit path.Type: ApplicationFiled: March 17, 2008Publication date: September 25, 2008Applicant: NEC Electronics CorporationInventor: Masakazu Ikegami
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Publication number: 20080232010Abstract: An electrostatic discharge (ESD) protection circuit and method thereof is provided. The ESD protection circuit includes two clamping circuits, an inductor, a diode and a diode string. In addition to a voltage swing of an output voltage able to get rid of the influence of the ESD protection circuit, the invention reduces an ESD conduction path length and dissipates an ESD current swiftly by installing at least two clamping circuits, which significantly increases the effectiveness of the protection for large-signal circuits.Type: ApplicationFiled: April 16, 2008Publication date: September 25, 2008Inventors: Po-Chih Wang, Ka-Un Chan
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Publication number: 20080232011Abstract: An integrated circuit (IC) includes one or more silicon-on-insulator (SOI) transistors. Each SOI transistor includes a first source region, a second source region, a drain region, a body contact region, a gate, and first and second isolation regions. The body contact region couples electrically to a body of the SOI transistor. The gate controls current flow between the first and second source regions and a drain region of the transistor. The first isolation region is disposed between the first source region and the body contact region. The second isolation region is disposed between the second source region and the body contact region.Type: ApplicationFiled: May 30, 2008Publication date: September 25, 2008Inventors: Yowjuang W. Liu, Minchang Liang
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Publication number: 20080232012Abstract: An apparatus for protecting an integrated circuit from electrostatic discharge (ESD) includes an RC trigger device configured between a pair of power rails, a first control path coupled to the RC trigger device, and a second control path coupled to the RC trigger device. A power clamp is configured between the power rails for discharging current from an ESD event, the power clamp having an input coupled to outputs of the first and second control paths, the power clamp independently controllable by the first and second control paths. The first and second control paths are further configured to prevent the power clamp from reactivating following an initial deactivation of the power clamp.Type: ApplicationFiled: June 5, 2008Publication date: September 25, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Albert M. Chu, Robert J. Gauthier, Junjun Li, Thomas W. Wyckoff
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Publication number: 20080232013Abstract: A circuit for electrostatic discharge (ESD) protection includes a resistor a capacitor connected in series with the resistor, a first transistor including a gate, the gate being connected to a first power supply providing a first voltage to the gate via the resistor and a first terminal connected to the first power supply, a second transistor including a gate, the gate being connected to a second power supply, the second power supply providing a second voltage smaller than the first voltage, the second transistor having a first terminal connected to a second terminal of the first transistor, and a third transistor including a gate, the gate being connected to the second power supply, a first terminal of the third transistor being connected to a second terminal of the second transistor, and a second terminal being connected to a reference voltage different from the first voltage and the second voltage.Type: ApplicationFiled: June 5, 2008Publication date: September 25, 2008Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Ming-Dou Ker, Wen-Yi Chen, Che-Hao Chuang
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Publication number: 20080232014Abstract: Electric fault current limiter has superconducting elements inside a cryogenic vessel and bushings for connecting an external circuit. The electric fault current limiter (1) includes a cryogenic vessel (2) and superconducting assemblies (5) including high temperature type superconducting elements (HTSC) immersed in a liquid coolant (6) such as liquefied nitrogen. Bushings (25, 28) with conductors (17, 18) are associated with a main body (3) of the vessel (2) such that the conductors (17, 18) extend horizontally from a surrounding space into an ullage space (8) situated between a level (7) of the liquid coolant (6) inside the vessel (2) and a cover (4). The arrangement of the bushings (25, 28) according to the invention allows for removing the cover (4) without dismantling electrical connections between the current limiter (1) and a circuit to be protected as is necessary with prior art limiters.Type: ApplicationFiled: January 29, 2008Publication date: September 25, 2008Inventors: Joachim Bock, Frank Breuer, Werner Kohler
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Publication number: 20080232015Abstract: In circuit abnormality determining apparatus and method applicable to a brake control apparatus, an abnormality determining section determines at least one of an abnormality location of the electric circuit and an abnormality kind of the electric circuit on a basis of monitoring results of a current state in the electric circuit detected by a current detection section, a voltage state of the electric circuit detected by a open circuit detection section, and a power supply voltage.Type: ApplicationFiled: March 3, 2008Publication date: September 25, 2008Inventors: Katsuhiko WAKABAYASHI, Akihiro Sato, Toshiyuki Innami, Hitoshi Kobayashi
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Publication number: 20080232016Abstract: A power control circuit with alarm, comprising a MCU control circuit, wherein further comprising a step down commute circuit, a power detecting circuit, a voltage regulate circuit, a complementary comparison circuit and a feedback compensating circuit, a cut-off control circuit. Said power detecting circuit and said step down commute circuit are connected in parallel. The input ends of power complementary comparing circuit and temperature negative feedback compensating circuit are connected to the output end of the power detecting circuit. The output ends of power complementary comparison circuit and temperature negative feed back compensating circuit are connected to the input end of MCU control circuit. Said step down commute circuit, voltage regulate circuit, MCU control circuit are connected in turn and in cascade. The output end of MCU control circuit is connected to the input end of power cut-off control circuit.Type: ApplicationFiled: March 21, 2007Publication date: September 25, 2008Inventors: Chao Chen, Shan Wang
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Publication number: 20080232017Abstract: A highly precise temperature compensation is applied in the detection of overcurrent. A control circuit detects a potential difference produced across a wire owing to the resistance of the wire and a load current that flows into the wire, which connects an NMOS transistor and an output terminal, and controls the NMOS transistor so as to limit the load current if the potential difference exceeds a prescribed value. The control circuit 20 includes a first diode group having a first end from which a first current is passed in a forward direction by a first current source and a second end connected to a first end of the wire, and a second diode group having a first end from which a second current is passed in a forward direction by a second current source and a second end connected to a second end of the wire.Type: ApplicationFiled: March 18, 2008Publication date: September 25, 2008Applicant: NEC ELECTRONICS CORPORATIONInventor: Sakae Nakajima
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Publication number: 20080232018Abstract: A control circuit includes a detection circuit to detect the short-circuited of a current sense terminal of the power converter. It includes a comparator, a verification circuit and a timer circuit. The comparator receives an input signal for generating a sense signal. The input signal represents the switching current of a power switch. The sense signal is enabled when the input signal is lower than a threshold. The verification circuit generates a protection signal in response to the sense signal or/and -a delay signal. The protection signal is generated when the current sense terminal is short-circuited, in which the power switch and the sense signal are enabled after the time delay of the delay signal. The protection signal turns off the power switch for the protection.Type: ApplicationFiled: March 16, 2007Publication date: September 25, 2008Inventors: Ta-Yung Yang, Wei-Hsuan Huang, Rui-Hong Lu