Patents Issued in October 30, 2008
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Publication number: 20080266687Abstract: An imaging optical system includes a set of mirrors including at least three mirrors on a beam path. Only a last mirror on the beam path has a positive optical power and all other mirrors have negative optical power. The sum of the optical powers of the mirrors is zero. An external posterior aperture stop is on the beam path between the last mirror and the image plane. A back focal length of the optical system is equal to or greater than an effective focal length of the optical system. The field of view is large, and typically at least 30-40 degrees in one plane.Type: ApplicationFiled: April 27, 2007Publication date: October 30, 2008Inventor: Lacy G. Cook
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Publication number: 20080266688Abstract: The present invention relates to a folding mechanism for exterior rear-view mirrors in an automotive vehicle, comprising a housing integral with a mirror-carrying casing, and an actuated ring acting as an axis of rotation of the mentioned casing with respect to a support chassis fixed to the vehicle, the ring being provided with first positional fixing means susceptible to coupling the mentioned ring to the support chassis and with second positional fixing means which, in collaboration with a stop element integral with the housing and loaded by un elastic member, limit the rotation of the mentioned casing around the ring and according to one rotating direction, all this with the stop element and the elastic member being integrated in a single piece with elastic properties.Type: ApplicationFiled: April 25, 2005Publication date: October 30, 2008Applicant: FICO MIRRORS, SAInventors: Jorge Errando Smet, Santiago Miguel Sanz, Angel Perez Trujillo
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Publication number: 20080266689Abstract: A non-stoichiometric SiOXNY thin-film optical filter is provided. The filter is formed from a substrate and a first non-stoichiometric SiOX1NY1 thin-film overlying the substrate, where (X1+Y1<2 and Y1>0). The first non-stoichiometric SiOX1NY1 thin-film has a refractive index (n1) in the range of about 1.46 to 3, and complex refractive index (N1=n1+ik1), where k1 is an extinction coefficient in a range of about 0 to 0.5. The first non-stoichiometric SiOX1NY1 thin-film may be either intrinsic or doped. In one aspect, the first non-stoichiometric SiOX1NY1 thin-film has nanoparticles with a size in the range of about 1 to 10 nm. A second non-stoichiometric SiOX2NY2 thin-film may overlie the first non-stoichiometric SiOX1NY1 thin-film, where Y1?Y2. The second non-stoichiometric SiOX1NY1 thin-film may be intrinsic and doped. In another variation, a stoichiometric SiOX2NY2 thin-film, intrinsic or doped, overlies the first non-stoichiometric SiOX1NY1 thin-film.Type: ApplicationFiled: April 26, 2007Publication date: October 30, 2008Inventors: Pooran Chandra Joshi, Apostolos T. Voutsas, John W. Hartzell
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Publication number: 20080266690Abstract: An optical filter and a lighting device using the same wherein the suppression of the melatonin secretion by the reception of light in the nighttime is prevented and the color of light is maintained desirable are provided. The optical filter has a mean transmissivity of a light beam in a wavelength range of about 480˜550 nm is about 30% or less. The optical filter is formed by at least molding a transparent resin and a resin composition material containing an orange color series fluorescent dye material, and, for 100 weight part of the transparent resin, the resin composition material containing about 0.005˜0.2 weight part of the orange color series fluorescent dye material is molded. This can prevent the suppression of the melatonin secretion in the nighttime. The color of light is maintained desirable. The optical filter may be applied to a lighting apparatus.Type: ApplicationFiled: September 13, 2005Publication date: October 30, 2008Applicant: Matsushita Electric Works, Ltd.Inventors: Naohiro Toda, Wataru Tanaka, Hiroki Noguti
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Publication number: 20080266691Abstract: Provided is an optical filter having a light-transmitting region of transmitting light having a predetermined wavelength and a light-blocking region disposed adjacent to the light-transmitting region to block out the light, wherein the light-blocking region has an optical density gradation relative to light in the normal direction, from the contact point to the light-transmitting region along an in-plane direction, and the optical density is the smallest at the contact point to the light-transmitting region.Type: ApplicationFiled: March 6, 2008Publication date: October 30, 2008Applicant: FUJIFILM CorporationInventors: Hiroyuki Kaihoko, Ryuji Saneto, Yukito Saitoh
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Publication number: 20080266692Abstract: A data writing method to write data on a disk in a disk device. The data is written in one radial direction. The method includes detecting a first deviation amount from a center in a current track and sector in the direction of a track on which data was previously written. A second deviation amount from the center in the current track and sector in the direction of a track on which data will be subsequently written is also detected. Data is written on the current track when the first deviation amount is equal to or smaller than a first threshold and the second deviation amount is equal to or smaller than a second threshold.Type: ApplicationFiled: April 25, 2008Publication date: October 30, 2008Applicant: FUJITSU LIMITEDInventors: Hitoshi Komoriya, Michinaga Yamagishi, Toru Yokohata
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Publication number: 20080266693Abstract: A read channel in that reads data from a magnetic storage media. An analog signal produced by passing a read head over magnetic storage media is amplified to match the range of an analog to digital converter (ADC) range. A baseline adjustment is performed on the amplified analog signal to center the amplified analog signal to a midscale of the ADC, which may be based on an error feedback signal and/or a decision feedback signal. Read channel compensation may then be performed after the baseline adjustment has been applied. The read channel compensated analog signal is sampled with the ADC to produce a digital signal. This digital signal may be filtered and a bit sequence may then be detected from the filtered digital signal. The EFB signal and/or the DFB signal may be produced in the digital domain based on the digital signal and the detected bit sequences.Type: ApplicationFiled: February 15, 2008Publication date: October 30, 2008Applicant: BROADCOM CORPORATIONInventors: William Gene Bliss, Sian She
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Publication number: 20080266694Abstract: A system reads data from a magnetic storage media. A read head reads data from the magnetic storage media and produce an analog signal. A variable gain amplifier amplifies the analog signal. An offset adjust module substantially centers the amplified analog signal to a midscale. A Magneto Resistive Asymmetry (MRA) collection module MRA corrects the amplified analog signal. A Continuous Time Filter (CTF) compensation module processes the amplified analog signal. An Analog to Digital Converter (ADC) samples the amplified analog signal based upon a control signal to produce a digital signal. A Disk Lock Clock (DLC) system produces the control signal to the ADC. The control signal is representative of a frequency offset caused by at least one servo wedge rate error. A Finite Impulse Response (FIR) filter module filters the digital signal. A sequence detector processes the digital signal and detects a bit sequence from the digital signal.Type: ApplicationFiled: April 27, 2008Publication date: October 30, 2008Applicant: BROADCOM CORPORATIONInventors: WILLIAM GENE BLISS, THOMAS V. SOUVIGNIER
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Publication number: 20080266695Abstract: A magnetic sensor control device has an input section, a selection section, a calculation section, and a setting section. The input section inputs a plurality of magnetic data each having 3 components sequentially output from a 3-dimensional (3D) magnetic sensor. The selection section selects 4 magnetic data satisfying a predetermined 4-point selection condition from the plurality of the input magnetic data. The calculation section calculates a center point equally distant from 4 points corresponding to the 4 selected magnetic data. The setting section sets 3 components representing the center point as an offset of the magnetic data.Type: ApplicationFiled: June 27, 2008Publication date: October 30, 2008Applicant: YAMAHA CORPORATIONInventor: Ibuki Handa
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Publication number: 20080266696Abstract: One embodiment of the invention includes a system for writing data onto a magnetic disk. An output driver provides a first write current through a first output transistor in a first state and provides a second write current through a second output transistor in a second state. The first and second write currents can be provided to a disk write head to store opposing binary values, respectively. A bias current generator switches a first bias current between an intermediate voltage node in the second state and the first control node in the first state, and switches a second bias current between the intermediate voltage node in the first state and the second control node in the second state. The first and second bias currents can be provided to set a bias voltage at the first and second control nodes to bias the first and second output transistors, respectively.Type: ApplicationFiled: April 14, 2008Publication date: October 30, 2008Inventors: Marius Vicentiu Dina, Jeremy Robert Kuehlwein
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Publication number: 20080266697Abstract: The present invention relates to an information recording device that writes data onto a recording medium having a recording density based on the number of write/erase cycles reasonably guaranteed to not produce errors in adjacent tracks. The recording medium includes a first storage region where the number of data write/erase cycles are restricted; and a second storage region where the number of data write/erase cycles are not restricted.Type: ApplicationFiled: April 1, 2008Publication date: October 30, 2008Applicant: FUJITSU LIMITEDInventors: Mitsuhiko Ohta, Atsuo Ilda, Hitoshi Komoriya
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Publication number: 20080266698Abstract: Access to the physical disks is differentiated as access from a host computer, and access based on processing (data migration processing, copy processing) for storage management. Whether to switch the state of the physical disks from a normal power consumption mode to a power saving mode is determined according to the access from the host computer after the access based on processing for storage management is complete, and the state of the physical disks are switched from the normal power consumption mode to the power saving mode based on the determination result.Type: ApplicationFiled: January 14, 2008Publication date: October 30, 2008Inventors: Tsukasa Shibayama, Yuri Hiraiwa, Daisuke Shinohara, Nobuyuki Osaki
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Publication number: 20080266699Abstract: The present invention provides: a write retry method which reduces the number of permanent errors; and a magnetic tape apparatus in which the method is implemented. In a write control method of the present invention, at least one dataset is written into a space of a predetermined distance in a lengthwise direction of a tape medium. A write ERP of the present invention can reduce occurrence of permanent errors before time-out, thereby having an advantageous effect of reducing the number of unnecessary requests for exchange of tape cartridges.Type: ApplicationFiled: April 22, 2008Publication date: October 30, 2008Inventors: Setsuko Masuda, Kenji Nakamura, Yutaka Oishi
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Publication number: 20080266700Abstract: A disc apparatus which can judge accurately whether or not a spindle motor is at fault due to a short circuit is provided. A disc apparatus (1) includes a spindle motor (3) which rotates a disc (2), a differential operational amplifier (5) which successively detects output voltages of the spindle motor (3), and a failure judgment unit (10) which calculates an average voltage of the plural output voltages and judges whether or not the spindle motor (3) is at fault in accordance with the average voltage and the output voltages. When counting number of occurrences of a specific state which indicates that one of the two output voltages detected successively is larger than the average voltage and other of the two output voltages is smaller than the average voltage, the failure judgment unit (10) judges that the spindle motor (3) is at fault.Type: ApplicationFiled: April 24, 2008Publication date: October 30, 2008Applicant: Funai Electric Co., Ltd.Inventors: Kazuki KAJIKAWA, Futoshi Takeda, Toshiaki Fukui, Kazuhiro Ichikawa, Kazuto Kitagawa
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Publication number: 20080266701Abstract: A magnetic recording disk in a disk drive has identical pre-patterned servo patterns on its front and back surfaces. The servo patterns on each disk surface are pre-patterned with a single master template, resulting in the identical pattern on each disk surface. The servo sectors on the two disk surfaces can form identical patterns of angularly spaced arcuate-shaped lines or straight lines that extend radially across the data tracks. However, because the lines on at least one of the disk surfaces do not replicate the path of the recording head, the sampling rate of the servo sectors on that surface is not constant but varies with radial position of the head. To accommodate this, the disk drive's servo control system calculates a timing adjustment from an estimate of the radial position of the head and uses this timing adjustment to adjust the time to open a time window to allow detection of the servo sectors.Type: ApplicationFiled: April 26, 2007Publication date: October 30, 2008Applicant: HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.Inventors: Thomas R. Albrecht, Zvonimir Z. Bandic
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Publication number: 20080266702Abstract: A system and method to measure capacitance between a recording media, such as but not limited to a magnetic disk in a hard disk drive, and a read-write (RW) head is provided. Once the capacitance has been measured, the head spacing may be determined between the RW head and the recording media. This capacitance between the RW head and the recording media, is a function of geometry and the dielectric constant associated with the head spacing. Because the dielectric constant and the area of the RW head and disk are substantially constant, the only change is the separation, i.e. head spacing. Thus, the capacitance becomes a function of the head spacing or fly height.Type: ApplicationFiled: December 21, 2007Publication date: October 30, 2008Applicant: BROADCOM CORPORATIONInventor: William Gene Bliss
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Publication number: 20080266703Abstract: A method of controlling a flying height of a magnetic head of a hard disk drive includes determining whether a difference between a measured flying height of the magnetic head measured by applying a burn-in FOD (flying on demand) voltage corresponding to a target flying height, according to a reference FOD voltage profile defining a relationship between the flying height of the magnetic head and the FOD voltage by which an end of the magnetic head thermally expands and thus protrudes, to a heater included in the magnetic head, and a burn-in flying height of the reference FOD voltage profile corresponding to the burn-in FOD voltage exceeds a preset reference, calculating a corrected FOD voltage for the target flying height by performing a touch down test of the magnetic head with respect to a disk, when the difference between the measured flying height of the magnetic head and the burn-in flying height exceeds the preset reference, and controlling a flying height of the magnetic head by applying the correctedType: ApplicationFiled: April 24, 2008Publication date: October 30, 2008Applicant: Samsung Electronics Co., LtdInventors: Young-Shin KIM, Jong Lak PARK
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Publication number: 20080266704Abstract: A method of controlling a flying height of a magnetic head of a hard disk drive includes calculating a corrected flying on demand (FOD) voltage to correct a difference between a measured flying height measured by applying a burn-in FOD voltage corresponding to a target flying height and a burn-in flying height in a reference FOD voltage profile corresponding to the burn-in FOD voltage, using the reference FOD voltage profile, in the reference FOD voltage profile that is a profile of a second signal for calculating the flying height of the magnetic head with respect to a first signal for calculating an FOD voltage that allows an end of the magnetic head to thermally expand and protrude when applied to a heater included in the magnetic head, and applying an applied FOD voltage obtained by applying the corrected FOD voltage, to the burn-in FOD voltage, to control the flying height of the magnetic head.Type: ApplicationFiled: April 24, 2008Publication date: October 30, 2008Applicant: Samsung Electronics Co., LtdInventors: Young Shin Kim, Hae Jung Lee, Chang-Hwan Lee
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Publication number: 20080266705Abstract: A method for detecting errors in a servo system of a magnetic storage drive includes writing a plurality of data tracks at a pitch, detecting a position of an edge of at least two of the data tracks under control of a servo system (e.g., an optical or magnetic servo system), and determining an error in the servo system based on the detected positions and known pitch of the data tracks. Differences in the track edge positions of the tracks from the positions at which they were written may indicate errors in the optical servo system (e.g., non-linearity errors, as well as other errors such as electrical, temperature, or the like). Determined errors may be stored with a look-up table of positional errors or used to normalize a position algorithm associated with the servo system.Type: ApplicationFiled: April 25, 2007Publication date: October 30, 2008Applicant: Quantum CorporationInventors: George A. Saliba, Theron S. White, Amir Djalali, Hong Chen
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Publication number: 20080266706Abstract: A magnetic head having a recording head portion for recording information at an arbitrary position on a magnetic recording surface of a recording medium and also having a reproducing head portion containing a reproducing head element for reproducing the information recorded at the arbitrary position on the magnetic recording surface forms a reproducing head element, the shape of which is curved, being made after a curved shape of a magnetization pattern recorded at the arbitrary position of the recording medium. Due to the foregoing, a shape of the lead gap formed between the reproducing head element and the magnetic recording surface of the recording medium is made to substantially agree with the shape of the magnetization pattern. On the other hand, a disk apparatus having a reproducing head element is provided in which the shape of the lead gap is made to substantially agree with the shape of the magnetization pattern.Type: ApplicationFiled: June 26, 2008Publication date: October 30, 2008Applicant: FUJITSU LIMITEDInventor: Michinaga Yamagishi
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Publication number: 20080266707Abstract: Various embodiments are disclosed for a flexible circuit. In one embodiment, the flexible circuit bends on a curved surface to form a partial loop.Type: ApplicationFiled: April 27, 2007Publication date: October 30, 2008Inventors: Paul W. Poorman, Lawrence A. Hansen, Marc R. Humann
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Publication number: 20080266708Abstract: A method and combination for mitigating turbulent air flow across an actuator of a data storage device. The combination includes a base deck having a retention cam surface adjacent a mounting pin, and an air diverter having a mounting aperture and a spring portion with a cam follower. The air diverter is confined adjacent the base deck in an operating position by executing the steps of the method to form the combination. The method includes the steps of; providing the base deck, disposing the air diverter onto the mounting pin, attaching a spindle motor with a disc to the base deck, securing an actuator supporting a read/write head to the base deck and affixing a top cover to the base deck, which places the air diverter under a compressive load between the top cover and the base deck thereby fixing the air diverter in the operating position.Type: ApplicationFiled: July 1, 2008Publication date: October 30, 2008Applicant: Seagate Technology LLCInventors: Jason A. Sorrell, Frederick P. Renken, Robert A. Alt, David R. Lapp
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Publication number: 20080266709Abstract: A recording and/or read device of a magnetic medium with magnetic tracks, including plural magnetic heads each including a pair of polar parts separated by an amagnetic head gap. These pairs of polar parts are grouped on at least one support with a non zero tilt angle between ±90° from the tracks, all head gaps of the pairs of polar parts in the support having the same azimuth angle, between ±90° excluding limits from a direction normal to the support.Type: ApplicationFiled: November 2, 2005Publication date: October 30, 2008Inventors: Jean-Baptiste Albertini, Pierre Gaud
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Publication number: 20080266710Abstract: In a perpendicular magnetic recording head in which a magnetic pole part of a main magnetic pole layer exposed at a medium-opposing surface exhibits a trapezoidal form narrower at a leading edge than at a trailing edge on the return yoke layer side, a bottom shield layer made of a soft magnetic material is provided below the leading edge of the magnetic pole part of the main magnetic pole layer in the track width direction while interposing a nonmagnetic material layer therebetween. The gap between the bottom shield layer and the leading edge of the magnetic pole part is set to less than 60 nm.Type: ApplicationFiled: April 23, 2008Publication date: October 30, 2008Applicant: TDK CorporationInventors: Hiroshi KAMEDA, Takahiro TAOKA
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Publication number: 20080266711Abstract: A tape head for use with a magnetic tape includes a support structure that has a tape bearing surface that is configured to engage the magnetic tape as the magnetic tape passes over the support structure. The support structure is made of a first material having a first hardness. The tape head further includes a transducer element having an interface surface for reading from and/or writing to the magnetic tape as the magnetic tape passes over the tape bearing surface. The tape head also includes a protective layer that substantially covers the interface surface, the protective layer being made of a second material having a second hardness that is at least as hard as the first hardness of the first material.Type: ApplicationFiled: April 27, 2007Publication date: October 30, 2008Applicant: SUN MICROSYSTEMS, INC.Inventors: John P. Nibarger, Kevin D. McKinstry
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Publication number: 20080266712Abstract: An external hard disk box is used for installing a hard disk. On the bottom and on two sides of the hard disk, there is a first fastening hole and a second fastening hole. The external hard disk box includes a lower cover, an upper cover, and two positioning structures. The lower cover has a receiving space. On the bottom surface of the receiving space, there is a first positioning portion that corresponds to the first fastening hole. The upper cover covers the lower cover. The two positioning structures are respectively located on two sides of the receiving space. Each positioning structure has a second positioning portion that corresponds to the second fastening hole of the hard disk. By using the first positioning portion and the second positioning portion, the hard disk is firmly positioned in the hard disk box. Screws are not needed.Type: ApplicationFiled: April 30, 2007Publication date: October 30, 2008Inventor: Chien-Da Hu
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Suspension, head gimbal assembly and manufacturing method thereof, and disk drive unit with the same
Publication number: 20080266713Abstract: A suspension for a HGA includes a suspension flexure and an out trigger. The suspension flexure has a tongue region having a first flexure part in a tip portion thereof for mounting a trailing edge of a slider and a PZT mounting region for mounting PZT elements. One end of the out trigger is connected to the suspension flexure, and the other end of the out trigger has a trigger support portion which extends above the tongue region so as to support the leading edge of the slider. The structure of the out trigger is capable of stiffening the tongue region of the suspension flexure and, in turns, avoiding the deformation problem and the dimple separation problem during the manufacturing process or in vibration or shock events. The invention also discloses a HGA with the suspension, manufacturing methods of the HGA and a disk drive unit having such HGA.Type: ApplicationFiled: April 26, 2007Publication date: October 30, 2008Applicant: SAE Magnetics (H.K.) Ltd.Inventors: MingGao Yao, YiRu Xie, Yu Sun, Lin Guo -
Publication number: 20080266714Abstract: A suspension for supporting a head slider has a flexure, several trace patterns positioned on the flexure, front flexure-bonding pads disposed on the flexure at a position corresponding to a leading edge of the head slider and connected to the trace patterns, and rear flexure-bonding pads disposed on the flexure at a position corresponding to a trailing edge of the head slider and connected to the trace patterns. The front and the rear flexure-bonding pads and the trace patterns are integrally formed and disposed on the flexure at the same time, so the fabricating process is simplified and there is no alignment problem for bonding location. This can ensure the connection strength and position between the head slider and the suspension changeless and, in turns, ensure a good attitude of the head slider. The invention also discloses a HGA and a disk drive device with such suspension, and a fabricating method for the suspension.Type: ApplicationFiled: April 30, 2007Publication date: October 30, 2008Applicant: SAE Magnetics (H.K) Ltd.Inventors: XianWen Feng, YiuSing Ho
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Publication number: 20080266715Abstract: A hard disk drive slider comprises an overcoat layer, which covers an air-bearing surface of the slider. The overcoat covers an exposed surface of a tunneling magnetoresistance transducer. An adhesion layer is coupled with the overcoat layer and the air-bearing surface. The adhesion layer comprises a compound of nitrogen. The compound of nitrogen reduces noise in read data from the tunneling magnetoresistance transducer.Type: ApplicationFiled: April 30, 2007Publication date: October 30, 2008Inventors: Charanjit S. Bhatia, Eric W. Flint, Cherngye Hwang, Eduardo Torres Mireles, Yongjian Sun, Jila Tabib, Nobuto Yasui
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Publication number: 20080266716Abstract: Embodiments of the present invention help to reduce the resistance variation of the heater provided in order to adjust the flying height of the slider. According to one embodiment, a magnetic head slider has a magnetic read/write device and a heater formed on the trailing end surface of the slider. The heater comprises a heating portion, terminal portions and lead portions. Where a terminal portion overlaps with a lead portion, a diffusion stop film is disposed between them. In addition, a diffusion stop film is disposed between a lead portion and a lower shield seed film (NiFe) under the associated stud. The diffusion stop films and are Ta films with a thickness of 5 nm or preferably at least 10 nm.Type: ApplicationFiled: April 25, 2008Publication date: October 30, 2008Inventor: Atsushi Kato
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Publication number: 20080266717Abstract: A tolerance ring (10) for providing an interference fit between inner and outer components (36, 50) is disclosed. The tolerance ring (10) comprises a deformable band wound to form a first layer (111) having a plurality of radially extending projections (12, 13, 15) around its circumference and an unformed second layer (110) which overlaps with the first layer. The second layer acts as a force diffuser to spread the forces transferred through the projections on to the inner or outer component.Type: ApplicationFiled: April 8, 2008Publication date: October 30, 2008Applicant: RENCOL TOLERANCE RINGS LIMITEDInventors: David Court, Andrew Robert Slayne
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Publication number: 20080266718Abstract: A testing method of a thin-film magnetic head has an MR read head element with a multi-layered structure including a magnetization-fixed layer, a magnetization-free layer and a nonmagnetic intermediate layer or a tunnel barrier layer sandwiched between the magnetization-fixed layer and the magnetization-free layer. The method includes a step of feeding through the MR read head element a sense current, a step of measuring non-signal output versus frequency characteristics of the MR read head element over a frequency range that covers at least FMR of the magnetization-fixed layer, and a step of discriminating whether the thin-film magnetic head is a head providing high-temperature noises by comparing a frequency of a peak of the non-signal output resulting from FMR of the magnetization-fixed layer with a threshold.Type: ApplicationFiled: April 25, 2007Publication date: October 30, 2008Applicant: TDK CORPORATIONInventors: Shunji Saruki, Takumi Uesugi, Tsuyoshi Umehara, Yosuke Antoku
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Publication number: 20080266719Abstract: A hard disk drive slider comprises a tunneling magnetoresistance transducer, which comprises an insulator barrier. A nitrogen atom from a nitrogen atmosphere occupies an oxygen atom vacancy within the insulator barrier, such that noise in read data from the tunneling magnetoresistance transducer is reduced.Type: ApplicationFiled: April 30, 2007Publication date: October 30, 2008Inventors: Peter M. Dang, Eric W. Flint, Daryl J. Pocker, Yongjian Sun, Jila Tabib, Brian R. York
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Publication number: 20080266720Abstract: A thin film magnetic head is disclosed having a non-magnetic layer that is formed of a NiPRe (nickel-phosphorus-rhenium) alloy, which makes it possible to optimize the composition ratios of elements Ni, P, and Re, to obtain the non-magnetic layer having a smooth surface, and to prevent concave portions from being formed in both side surfaces of the non-magnetic layer during a milling process, thereby improving recording characteristics. The composition ratio of a NiPRe alloy forming the non-magnetic layer is set within the range surrounded by boundary lines A to D in a ternary diagram, which makes it possible to form a non-magnetic layer having a smooth surface and uniformly form the magnetic layer on the non-magnetic layer. In addition, since the NiPRe alloy having the composition ratio has a low milling rate, it is possible to prevent concave portions from being formed in both side surfaces of the magnetic layer that is formed on or underneath the non-magnetic layer.Type: ApplicationFiled: October 15, 2007Publication date: October 30, 2008Inventors: Hisayuki Yazawa, Mitsuo Kawasaki
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Publication number: 20080266721Abstract: In a perpendicular magnetic recording head comprising a main magnetic pole layer, a return yoke layer, and an auxiliary yoke layer, a plurality of rear magnetic connecting layers intermittently extending to a connecting position with the return yoke layer are provided at the same lamination position as with the main magnetic pole layer on the rear side of the main magnetic pole layer in the height direction. The auxiliary yoke layer is formed by a plurality of divided auxiliary yoke layers intermittently extending on the rear side of the medium-opposing surface in the height direction and magnetically connecting the main magnetic pole layer to the plurality of rear magnetic connecting layers, respectively. In each of the main magnetic pole layer, plurality of rear magnetic connecting layers, and plurality of divided auxiliary yoke layers, the size in the track width direction is defined greater than the size in the height direction.Type: ApplicationFiled: April 23, 2008Publication date: October 30, 2008Applicant: TDK CORPORATIONInventor: Hiroshi Kameda
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Publication number: 20080266722Abstract: A thin-film magnetic head comprises a reproducing element formed on an undercoat film on a head substrate surface, a recording element formed on the upper side of the reproducing element, and a heater formed on the upper or lower side of the reproducing element, the heater generating heat upon energization so as to project at least the reproducing element by thermal expansion toward a recording medium. A shield layer is formed between the reproducing element and the heater by a plurality of layers including at least first and second shield layers. In the first and second shield layers, the second upper shield layer located closer to the heater is formed by a material having a coefficient of thermal expansion smaller than that of the first shield layer located closer to the reproducing element.Type: ApplicationFiled: April 17, 2008Publication date: October 30, 2008Applicant: TDK CORPORATIONInventors: Mitsuo KAWASAKI, Kiyoshi KOBAYASHI, Tomoo OTSUKA, Hironori NAMBA, Yusuke KANEKUNI
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Publication number: 20080266723Abstract: In a perpendicular magnetic recording head in which a magnetic pole part of a main magnetic pole layer exposed at a medium-opposing surface exhibits a trapezoidal form narrower on the leading edge side than on the trailing edge side, a pair of partial side shield layers made of a soft magnetic material are provided on both sides in the track width direction of the magnetic pole part of the main magnetic pole layer such as to be located more on the leading edge side of the magnetic pole part.Type: ApplicationFiled: April 22, 2008Publication date: October 30, 2008Applicant: TDK CORPORATIONInventors: Hisayuki YAZAWA, Takahiro TAOKA, Hiroshi KAMEDA
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Publication number: 20080266724Abstract: In a perpendicular magnetic recording head in which a magnetic pole part of a main magnetic pole layer exposed at a medium-opposing surface exhibits a trapezoidal form narrower at a leading edge than at a trailing edge on the return yoke layer side, a magnetic shield layer having a pair of side shield parts separated at the leading edge so as to oppose both side faces of the magnetic pole part and a bottom shield part magnetically connected to the pair of side shield parts and positioned below the leading edge of the magnetic pole part is provided on the leading edge side in the track width direction of the magnetic pole part of the main magnetic pole layer.Type: ApplicationFiled: April 22, 2008Publication date: October 30, 2008Applicant: TDK CORPORATIONInventors: Hisayuki YAZAWA, Takahiro TAOKA, Hiroshi KAMEDA
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Publication number: 20080266725Abstract: A tunnel junction TMR magnetoresistive sensor formed on layers having nitrogen interspersed therein. The nitrogenation of the layers on which the sensor is deposited allows the sensor layers to have very smooth, uniform surfaces. This greatly improves sensor performance by, for example, providing a very uniform barrier layer thickness.Type: ApplicationFiled: May 23, 2008Publication date: October 30, 2008Inventors: Thomas E. Shatz, Dulip Ajantha Welipitiya, Brian R. York
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Publication number: 20080266726Abstract: Embodiments include a server and a sensor that detects when a first fluid line to the server fails so a second fluid line to the server is activated.Type: ApplicationFiled: April 27, 2007Publication date: October 30, 2008Inventors: Vance Murakami, Christian L. Belady, Paul L. Perez, Robert A. Pereira
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Publication number: 20080266727Abstract: Method and arrangement for controlling the gate control voltage (U2C) of voltage-controlled power semiconductor components (V2), such as IGBT transistors, used in power electronics appliances in a fault situation, such as in a situation of short-circuit of the output connectors of a frequency converter, in which method the gate control voltage (U2C) of the power semiconductor component (V2) is decreased before the connection of the negative gate control voltage intended to extinguish the power semiconductor switch in order to minimize the voltage peak of the voltage over especially the power semiconductor component, such as the collector voltage, and in which the gate control voltage (U2C) is decreased before the connection of the negative gate control voltage intended to extinguish the power semiconductor switch such that, its level decreases constantly, and it remains positive, and in which the gate control voltage (U2C) is decreased thus until at least the first voltage peak over the component, especialType: ApplicationFiled: April 29, 2008Publication date: October 30, 2008Inventor: Paavo Merilinna
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Publication number: 20080266728Abstract: System to control, protect and monitor the status of forced cooling motors for power transformers and similar, is preferably applied to power transformers and auto-transformers, and this system turns conventional (1) cooling motors into “intelligent” motors, operating in a totally autonomous manner, whose electronic module (2) is installed on the actual motor cover, more specifically on the connection box (3) and is interconnected by a communication network to a digital system (4) without the need to use any external control, protection and monitoring elements or exaggerated panels for functioning thereof.Type: ApplicationFiled: August 17, 2006Publication date: October 30, 2008Inventor: Eduardo Pedrosa Santos
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Publication number: 20080266729Abstract: A radio frequency interface circuit (11) for a radio frequency identification tag comprising—at least two input terminals (RF+, RF?) for connecting the circuit (10) with an antenna structure of the radio frequency identification tag, —one or more variable resistive loads (14) coupled across pairs of the input terminals (RF+, RF?)—one or more rectifiers (15) each connected on its input side to a pair of input terminals (RF+, RF?) and on its output side to a parallel connection of voltage control means (16) and modulation control means (17), wherein combiner means (18) are provided which are adapted to receive an output signal (19, 20) from the voltage control means (16) and the modulation control means (17), respectively, and to generate a control signal (21) for controlling each variable resistive load (14) depending on the received signals (19, 20) in such a way that each variable resistive load (14) serves as a modulation and voltage regulation circuit, and wherein each variable resistive load is adapted toType: ApplicationFiled: December 14, 2006Publication date: October 30, 2008Applicant: NXP B.V.Inventors: Roland Brandl, Ewald Bergler, Robert Spindler
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Publication number: 20080266730Abstract: An electronic circuit includes a first signal line that extends along a first direction, a spark gap device that has a first conductive trace and a second conductive trace, the first conductive trace being connected to the first signal line. The first and second conductive traces are spaced apart to define a spark gap, the first and second conductive traces being aligned along the first direction to direct an electrostatic discharge along the first direction from the first signal line through the spark gap to a ground reference electrically coupled to the second conductive trace. A second signal line is connected to the first conductive trace or to the first signal line in a vicinity of the first conductive trace, the second signal line extending along a second direction at an angle relative to the first direction.Type: ApplicationFiled: April 24, 2008Publication date: October 30, 2008Inventors: KARSTEN VIBORG, JOHANNES HARREBEK
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Publication number: 20080266731Abstract: In a level conversion circuit mounted in an integrated circuit device using a plurality of high- and low-voltage power supplies, the input to the differential inputs are provided. In a level-down circuit, MOS transistors that are not supplied with 3.3 V between the gate and drain and between the gate and source use a thin oxide layer. In a level-up circuit, a logic operation function is provided.Type: ApplicationFiled: July 8, 2008Publication date: October 30, 2008Inventors: Kazuo TANAKA, Hiroyuki Mizuno, Rie Nishiyama, Manabu Miyamoto
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Publication number: 20080266732Abstract: A limiter includes three current limiters. Each current limiter includes a first end disposed proximate a first housing surface and electrically connected to a corresponding first terminal, a second end disposed proximate a second housing surface and electrically connected to a corresponding second terminal, an elongated body disposed between the ends, and a plunger. Two plungers define a straight line and a third plunger is offset from the straight line. Three indicator members each include a first end, an indicator disposed therefrom, and an opposite second end, which is engaged by a corresponding plunger. The indicator is disposable through a corresponding housing opening. Three springs bias corresponding indicator members away from the second housing surface. The housing carries two indicator members in a first orientation and a third indicator member in a different second orientation. The indicators are positioned in a straight line and are disposable through corresponding housing openings.Type: ApplicationFiled: April 26, 2007Publication date: October 30, 2008Inventors: Richard P. Malingowski, Steven D. Payne
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Publication number: 20080266733Abstract: A circuit testing closer is capable of closing a power distribution circuit and interrupting the resulting current at the next current zero. Upon detecting a fault, the circuit testing closer is operable to open contacts to isolate the fault. Next, the circuit testing closer tests the faulted line to determine whether the fault has cleared. The circuit testing closer may generate a first test signal having a first polarity and a second test signal having a second polarity opposite the first polarity. Generation of the second test signal may be limited to occur when the first test signal indicates a fault.Type: ApplicationFiled: October 3, 2006Publication date: October 30, 2008Applicant: S & C ELECTRIC CO.Inventors: Raymond P. O'Leary, Christopher R. Lettow, Alejandro Montenegro, John C. Opfer
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Publication number: 20080266734Abstract: An integrated circuit includes a radiation-triggered shutdown circuit that disables a critical aspect of the integrated circuit rendering the integrated circuit non-functional when the integrated circuit receives a predetermined radiation dose. That ensures integrated circuits including the radiation-triggered shutdown circuit are ITAR compliant.Type: ApplicationFiled: April 27, 2007Publication date: October 30, 2008Inventor: Roy Mark Miller
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Publication number: 20080266735Abstract: A method and apparatus implement adaptive power supply (APS) system voltage level activation eliminating the use of electronic Fuses (eFuses). A primary chip includes an adaptive power supply (APS). A secondary chip circuit includes at least one pair of hard-wired APS setting connections. Each hard-wired APS setting connection is defined by a selected one of a voltage supply connection and a ground potential connection. A respective inverter couples a control signal from each of the hard-wired APS setting connections to a power communication bus connected to the APS on the primary chip.Type: ApplicationFiled: April 25, 2007Publication date: October 30, 2008Inventors: Phil C. Paone, David Paul Paulsen, John Edward Sheets, Gregory John Uhlmann
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Publication number: 20080266736Abstract: A method and apparatus implement adaptive power supply (APS) system voltage level activation eliminating the use of electronic Fuses (eFuses), and a design structure on which the subject circuit resides are provided. A primary chip includes an adaptive power supply (APS). A secondary chip circuit includes at least one pair of hard-wired APS setting connections. Each hard-wired APS setting connection is defined by a selected one of a voltage supply connection and a ground potential connection. A respective inverter couples a control signal from each of the hard-wired APS setting connections to a power communication bus connected to the APS on the primary chip.Type: ApplicationFiled: October 10, 2007Publication date: October 30, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Phil C. Paone, David Paul Paulsen, John Edward Sheets, Gregory John Uhlmann