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| 20090002888 | Overpass structure of flexible printed cable (FPC) signal lines with suspension signal lines for a hard disk drive - A printed circuit that connects a head to a pre-amplifier circuit of a hard disk drive. The head has a pair of write bond pads and a pair of read bond pads. The printed circuit has a pair of read traces located in a first layer and connected to the read bond pads. The printed circuit also has a pair of write traces that are located in a second layer and connected to the write bond pads. The write traces cross with the read traces so that a head fabricated from a single head wafer can be used as a Up head in a hard disk drive. | 01-01-2009 |
| 20090128944 | Hard disk drive tunneling magnetoresistive annealing heads with a fly on demand heater - A hard disk drive that includes a head coupled to a disk. The head has a heater element. The drive also includes a controller that causes the heater element to heat the head to a temperature sufficient to anneal material within the head. The head is heated to a temperature sufficient to cause oxidation of any metal, such as aluminum, within the head, and/or oxygen redistribution and homogenization in the barrier. This heating process preferably occurs while the drive is not writing or reading data and the head is off disk. | 05-21-2009 |
| 20090153995 | Temperature coefficient of resistance measurement of TMR head using flying height control heater and determine maximum bias voltage of TMR heads - A method for determining whether a magneto-resistive head of a hard disk drive is defective for having an undesirable break down voltage. The method includes applying a voltage to a heater element of a magneto-resistive head and measuring a write element resistance and a read element resistance. A temperature coefficient of resistance for the read element is determined from the measured read and write element resistances. The head is considered defective if the temperature coefficient exceeds a threshold. | 06-18-2009 |
| 20090154028 | Grounding structure of TMR and GMR heads with a flying on-demand heater - A head for a hard disk drive. The head includes a substrate, a write element, a read element and a heater element. The head also includes a buffer layer between the read element and the substrate, and a first resistor connected to the heater element and the buffer layer. The buffer layer and resistor create an impedance that suppresses noise introduced to the head from the disk of the drive. | 06-18-2009 |
| 20090251823 | Write head with common mode termination resistor - A write circuit and a head for a hard disk drive. The head includes a substrate that has an electrical ground and a write element that has a center tap. The head also has a resistor that is connected to the center tap and the electrical ground. The resistor provides a return path for AC and DC components of any common mode signal in a write circuit. The resistor can also generate heat that thermally expands the head and varies a head flying height. The write element is connected to an write driver circuit that provides in phase currents to a write element during the write operation and out of phase currents during a read operation. The out of phase currents allow for thermal expansion and flying height control even during a read operation. | 10-08-2009 |
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| 20080247095 | Method and apparatus for temperature sensing in a hard disk drive - A slider comprising a platinum layer including a first end and a second end, where slider temperature may be estimated based upon the platinum layer resistance. A head gimbal assembly including the slider. A head stack assembly including the head gimbal assembly. A preamplifier including an analog to digital converter for measuring the platinum layer resistance. An embedded circuit for electrically coupling to the head stack assembly to use the platinum layer to successively estimate slider temperature and estimate head disk impact events and maintain a head disk impact count. A hard disk drive including the slider and measuring the resistance of the platinum layer to estimate slider temperature and/or head disk impact events and increment and maintain a head disk impact count. | 10-09-2008 |
| 20090190255 | Method and for wide track erasure in a hard disk drive - A hard disk drive is disclosed with a slider including a wide track eraser for erasing neighboring tracks and the servo patterning around a track on the accessed disk surface. Using the wide track eraser reduces the time to erase a disk surface by at least a factor of N, where N is at least 4, and may preferably be successively larger to at least 64. Embodiments include the slider, a head gimbal assembly, a main flex circuit, an integrated circuit for the main flex circuit for stimulating the wide track eraser, a head stack assembly including the main flex circuit coupling through the head gimbal assembly to the wide track eraser, a control circuit, and a processor within the control circuit controlling the stimulus of the wide track eraser to erase part or all of a disk surface. | 07-30-2009 |
| 20090279204 | Method and apparatus for flyng height on demand heaters in a hard disk drive - A hard disk drive is disclosed with a slider containing a Flying height On Demand (FOD) heater using two heater sheets configured to be driven by electric currents flowing in essentially opposite directions, causing the magnetic field induced by the FOD heater to be much smaller than prior art FOD heaters using just one sheet with a single current direction. Also disclosed are the slider, the head gimbal assembly, and the head stack assembly, where both assemblies include at least one instance of the slider. Also disclosed, the methods of operating the hard disk drive and the slider and making the slider, the head gimbal assembly, the head stack assembly and the hard disk drive. | 11-12-2009 |
| 20100134925 | APPARATUS MINIMIZING IMPEDANCE IN FLEX-TO-PRINTED CIRCUIT BOARD CONNECTION THROUGH THE DISK BASE OF A HARD DISK DRIVE - This application discloses a hard disk drive, a head stack assembly, and a printed circuit board configured to include impedance patches on the flex ground plane, the flex power plane, the printed circuit ground plane and/or the printed circuit power plane over or under a connector site in the disk base that conveys access read and write differential signals for the sliders' access of rotating disk surfaces. These impedance patches minimize impedance discontinuities in the read and/or write differential signals through the connector site, which may improve the ability of the hard disk drive to transmit these signals at higher frequencies. | 06-03-2010 |
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| 20090048655 | Two-step/dual-diameter balloon angioplasty catheter for bifurcation and side-branch vascular anatomy - The present invention tackles the challenging anatomic characteristics of the coronary artery disease in the bifurcation point and the origin of side-branch. The invention has a specifically designed angioplasty balloon catheter, particularly the balloon shape and profile, to be used in the diseased vessels at these difficult anatomic locations. In stent implanting into a coronary artery, a balloon catheter application is an inseparable requirement. A stent is a passive device that cannot be deployed in a diseased or stenosed artery without a pre-stent, with-stent and/or post-stent balloon dilatation. In majority (more than 95%) of available coronary stents, a stent is deployed by balloon expandable mode, meaning that the stent is delivered and expanded inside a vessel lumen by expanding a delivery balloon. This is done by crimping a stent over a folded balloon for delivery into a coronary artery. When expanded by balloon inflation, a stent is expanded and shaped passively by the inflated balloon shape and profile. The balloon catheter is designed to do angioplasty in the bifurcation and side-branch anatomy of coronary arteries, while minimizing the side effect. This specially designed balloon catheter is not only for balloon angioplasty dilatation of the bifurcation and side-branch anatomy, but is also for delivering and deploying specially designed bifurcation or side-branch stents into these difficult anatomic locations, as a stent delivery system. | 02-19-2009 |
| 20090254173 | Extendible stent apparatus - An expandable stent includes a tubular structure with an outer surface positionable adjacent to a vessel wall and an inner surface facing a lumen of a body passageway. The tubular structure further includes a plurality of expansion struts, connector struts and cells. The tubular structure has a first diameter which permits intraluminal delivery of the tubular structure into the body passageway, and a second expanded and deformed diameter which is achieved upon the application of a radially, outwardly extending force. A plurality of cavities are formed in the outer surface of the stent. | 10-08-2009 |
| 20120065724 | Intravascular Stent - A stent in a non-expanded state has a first and second expansion column, each consisting of a plurality of expansion strut pairs. An expansion strut pair includes a first expansion strut, a second expansion strut and a joining strut that couples the first and second expansion struts at one end. Expansion strut pairs include expansion strut pair first and second corners formed where the joining strut couples the first and second expansion struts. A connecting strut column, formed of a plurality of connecting struts couples the first and second expansion columns. Connecting struts include a proximal section, a distal section and an intermediate section. The proximal section is coupled to the corner of an expansion strut pair of the first expansion column, and the distal section is coupled to the joining strut of an expansion strut pair of the second expansion column intermediate the expansion strut pair first corner and the expansion strut pair second corner. | 03-15-2012 |
| 20120085734 | Extendible Stent Apparatus - An expandable stent includes a tubular structure with an outer surface positionable adjacent to a vessel wall and an inner surface facing a lumen of a body passageway. The tubular structure further includes a plurality of expansion struts, connector struts and cells. The tubular structure has a first diameter which permits intraluminal delivery of the tubular structure into the body passageway, and a second expanded and deformed diameter which is achieved upon the application of a radially, outwardly extending force. A plurality of cavities are formed in the outer surface of the stent. | 04-12-2012 |
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| 20090074763 | METHOD FOR INHIBITING BONE RESORPTION - The invention is directed to a method of inhibiting bone resorption. The method comprises administering to a human an amount of sclerostin inhibitor that reduces a bone resorption marker level for at least 2 weeks. The invention also provides a method of monitoring anti-sclerostin therapy comprising measuring one or more bone resorption marker levels, administering a sclerostin binding agent, then measuring the bone resorption marker levels. Also provided is a method of increasing bone mineral density; a method of ameliorating the effects of an osteoclast-related disorder; a method of treating a bone-related disorder by maintaining bone density; and a method of treating a bone-related disorder in a human suffering from or at risk of hypocalcemia or hypercalcemia, a human in which treatment with a parathyroid hormone or analog thereof is contraindicated, or a human in which treatment with a bisphosphonate is contraindicated. | 03-19-2009 |
| 20110262433 | METHOD FOR INHIBITING BONE RESORPTION - The invention is directed to a method of inhibiting bone resorption. The method comprises administering to a human an amount of sclerostin inhibitor that reduces a bone resorption marker level for at least 2 weeks. The invention also provides a method of monitoring anti-sclerostin therapy comprising measuring one or more bone resorption marker levels, administering a sclerostin binding agent, then measuring the bone resorption marker levels. Also provided is a method of increasing bone mineral density; a method of ameliorating the effects of an osteoclast-related disorder; a method of treating a bone-related disorder by maintaining bone density; and a method of treating a bone-related disorder in a human suffering from or at risk of hypocalcemia or hypercalcemia, a human in which treatment with a parathyroid hormone or analog thereof is contraindicated, or a human in which treatment with a bisphosphonate is contraindicated. | 10-27-2011 |
| 20110268730 | METHOD FOR INHIBITING BONE RESORPTION - The invention is directed to a method of inhibiting bone resorption. The method comprises administering to a human an amount of sclerostin inhibitor that reduces a bone resorption marker level for at least 2 weeks. The invention also provides a method of monitoring anti-sclerostin therapy comprising measuring one or more bone resorption marker levels, administering a sclerostin binding agent, then measuring the bone resorption marker levels. Also provided is a method of increasing bone mineral density; a method of ameliorating the effects of an osteoclast-related disorder; a method of treating a bone-related disorder by maintaining bone density; and a method of treating a bone-related disorder in a human suffering from or at risk of hypocalcemia or hypercalcemia, a human in which treatment with a parathyroid hormone or analog thereof is contraindicated, or a human in which treatment with a bisphosphonate is contraindicated. | 11-03-2011 |
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| 20080203007 | PORTABLE WATER FILTRATION DEVICE - Disclosed is a portable water filtration device in which a filter cartridge having a water purifying function is mounted in a water bottle, including a body, which has an inlet in its upper portion and is made of an elastically deformable material, a lid, which is coupled with the body and has a discharge hole, through which water is discharged, a filter cartridge, which is coupled with the lid and has an outflow part from which the water is discharged, inflow holes through which the water enters, and a filter, and a filter housing, which is open in its upper portion for insertion of the filter cartridge into the filter housing. Thus, the portable water filtration device is easy to carry outdoors and is convenient to use because it does not require a separate pressurizer. | 08-28-2008 |
| 20100180411 | SNAP RING HAVING MULTIPLE ROLLERS - A snap ring for coupling a purse line to a purse seine includes a frame, a plurality of rollers, a frame opening, and a locking unit. The frame is connected to the purse seine. The purse line passes through a second end of the frame. The rollers are rotatably provided in the frame at positions at which the purse line is brought into contact with the frame. The frame opening is formed in one side part of opposite side parts of the frame to open the frame. The locking unit is coupled to the frame to openably close the frame opening. The locking unit includes a first cylinder which is hinged at a first end thereof to the part of the frame which corresponds to a first end of the frame opening. | 07-22-2010 |
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| 20090184678 | PERMANENT MAGNET AC MOTOR SYSTEMS AND CONTROL ALGORITHM RESTART METHODS - Permanent magnet alternating current (PMAC) motor systems and methods for starting or restarting PMAC motor system sensorless control algorithms are provided. One system includes a PMAC motor including a rotor, an inverter, and a controller. The controller includes control logic, start/restart logic, drive logic, current detect logic, and estimation logic configured to estimate a position of the rotor, a speed of the PMAC motor, or both based on current detected in each phase of the inverter. A start/restart method includes determining to start/restart the sensorless control algorithm and modifying the inverter voltage in response to the determined start/restart. The method also includes detecting current in each inverter phase after the inverter voltage is modified and estimating a rotor position, a PMAC motor speed, or both based on the current detected in each inverter phase after the inverter voltage is modified. Another controller includes means for performing the above start/restart method. | 07-23-2009 |
| 20090294675 | SECURE ENCLOSURE - A system is provided for detecting when an enclosure having a body and a removable cover is opened. The system comprises a light source for generating a light beam, a light detector for detecting the light beam, and at least one reflector all mounted inside the enclosure. The reflector reflects the light beam along a predetermined pathway toward the light detector when the removable cover is closed over the body. | 12-03-2009 |
| 20100019702 | CURRENT SENSING FOR A MULTI-PHASE DC/DC BOOST CONVERTER - Methods and apparatus are provided for sensing currents on a plurality of phases and determining current information therefrom. The multi-phase boost converter includes a single sensor coupled to all of the plurality of phases and a controller coupled to the sensor for determining the current information in response to currents on each of the plurality of phases sensed by the sensor. The sensing method utilizes the gate drive signals and the DC current sensor output to calculate the currents on each of the plurality of phases sensed by the sensor. | 01-28-2010 |
| 20100073980 | POWER CONVERTER ASSEMBLY WITH ISOLATED GATE DRIVE CIRCUIT - A power converter assembly is provided. The power converter includes at least one switch, a high frequency oscillator coupled to the at least one switch and configured to generate a high frequency waveform based on direct current (DC) power provided thereto, and a power buffer coupled to the at least one switch and the high frequency oscillator and configured to control the operation of the at least one switch based on the high frequency waveform | 03-25-2010 |
| 20100320014 | AUTOMOTIVE POWER ELECTRONICS WITH WIDE BAND GAP POWER TRANSISTORS - An automotive power electronics system is provided. The automotive power electronics system includes a support member and at least one electronic die mounted to the support member. The at least one electronic die has an integrated circuit formed thereon comprising at least one wide band gap transistor. | 12-23-2010 |
| 20110025248 | MULTI-PHASE DC/DC BOOST CONVERTER - A method and an apparatus are provided for balancing current for each of a plurality of similar phases of a DC/DC boost converter. The method includes the step of measuring a voltage drop of each of the plurality of similar phases at predetermined times by measuring the voltage drop across each phase switching device when current is flowing through the switch. The method also includes the steps of calculating current information for each of the plurality of similar phases in response to the voltage drop measured for each of the plurality of similar phases and balancing current for each of the plurality of similar phases in response to the current information of each of the plurality of similar phases. | 02-03-2011 |
| 20110109292 | METHODS AND SYSTEMS FOR CONTROLLING BOOST CONVERTERS - A method for controlling a boost converter having a duty cycle includes the steps of receiving an electric current command for the boost converter, measuring a source current for the boost converter, regulating the duty cycle as a function of the electric current command and the source current, subject to a first minimum limit if a rapid change in duty cycle is required above a predetermined threshold and a second minimum limit if the rapid change in duty cycle is not required. | 05-12-2011 |
| 20110133546 | SYSTEMS AND METHODS FOR DISCHARGING BUS VOLTAGE USING SEMICONDUCTOR DEVICES - Systems and methods are provided for discharging a voltage bus. An electrical system comprises a first switch coupled to a first voltage rail, a second switch coupled between the first switch and a second voltage rail, and a control system coupled to the first switch and the second switch. The control system is configured to alternately activate the first switch and the second switch such that an energy potential between the first voltage rail and the second voltage rail is dissipated through the first switch and the second switch. | 06-09-2011 |
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| 20080198941 | LOW-COMPLEXITY SCALABLE ARCHITECTURE FOR CONCATENATION-ASSISTED SYMBOL-LEVEL COMBINING - Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where a receiver has received one or more signal vectors from the same transmitted vector. The receiver processes these received signal vectors one by one, and uses information from signal vectors that have already been processed to process the next signal vector. To process a current signal vector, the receiver concatenates the current signal vector with a previously processed signal vector. This concatenated signal vector is decoded using, for example, a maximum-likelihood (ML). To decode the concatenated signal vector, the ML decoder can use a concatenated channel matrix that includes a channel response matrix associated with the current signal vector and a processed version of previous channel response matrices. | 08-21-2008 |
| 20120069935 | SYMBOL-LEVEL COMBINING FOR MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) SYSTEMS WITH HYBRID AUTOMATIC REPEAT REQUEST (HARQ) AND/OR REPETITION CODING - Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where the receiver has received one or more signal vectors from the same transmitted vector. The symbols of the received signal vectors are combined, forming a combined received signal vector that may be treated as a single received signal vector. The combined signal vector is then decoded using a maximum-likelihood decoder. In some embodiments, the combined received signal vector may be processed prior to decoding. Systems and methods are also provided for computing soft information from a combined signal vector based on a decoding metric. Computationally intensive calculations can be extracted from the critical path and implemented in preprocessors and/or postprocessors. | 03-22-2012 |
| 20120121005 | CONCATENATION-ASSISTED SYMBOL-LEVEL COMBINING FOR MIMO SYSTEMS WITH HARQ AND/OR REPETITION CODING - Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where the receiver has received one or more signal vectors from the same transmitted vector. The receiver combines the received vectors by vector concatenation The concatenated vector may then be decoded using, for example, maximum-likelihood decoding. In some embodiments, the combined signal vector is equalized before decoding. | 05-17-2012 |
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| 20100160955 | PERCUTANEOUS CATHETER AND GUIDEWIRE HAVING FILTER AND MEDICAL DEVICE DEPLOYMENT CAPABILITIES - The invention provides a nested tubing cannula which comprises outer and inner elongate tubular members, both having a proximal end, a distal end, and a lumen therebetween. The inner tubular member is sealed at its distal end and is nested substantially coaxially within the lumen of the outer tubular member, so that the gap between the inner and the outer tubular member defines a second lumen whereas the first lumen is the lumen of the inner tubular member. A tubular sleeve is disposed coaxially between the inner and outer tubular members. A balloon is mounted on a distal region of the outer tubular member and is in communication with the first lumen. The cannula further comprises a port proximal or distal the balloon occluder and is in communication with the second lumen. Methods for making the devices herein are disclosed. | 06-24-2010 |
| 20100222736 | ENDOLUMINAL OCCLUSION-IRRIGATION CATHETER WITH ASPIRATION CAPABILITIES AND METHODS OF USE - A catheter system comprising a guidewire, an endovascular catheter, and an aspiration catheter. The guidewire has an expandable occluder mounted on a distal end. The guidewire and the endovascular catheter are insertable into a lumen of the aspiration catheter. The aspiration catheter also includes infusion and aspiration lumen(s) and port(s). Methods of using the catheter system for treating a vascular lesion and removing embolic material during the procedure are also disclosed. | 09-02-2010 |
| 20110224716 | PERCUTANEOUS CATHETER AND GUIDEWIRE HAVING FILTER AND MEDICAL DEVICE DEPLOYMENT CAPABILITIES - The invention provides a nested tubing cannula which comprises outer and inner elongate tubular members, both having a proximal end, a distal end, and a lumen therebetween. The inner tubular member is sealed at its distal end and is nested substantially coaxially within the lumen of the outer tubular member, so that the gap between the inner and the outer tubular member defines a second lumen whereas the first lumen is the lumen of the inner tubular member. A tubular sleeve is disposed coaxially between the inner and outer tubular members. A balloon is mounted on a distal region of the outer tubular member and is in communication with the first lumen. The cannula further comprises a port proximal or distal the balloon occluder and is in communication with the second lumen. Methods for making the devices herein are disclosed. | 09-15-2011 |
