Patent application number | Description | Published |
20100140009 | VEHICLE CONTROL BY PITCH MODULATION - A method for fore-aft stabilization of a vehicle for motion in a specified direction over an underlying surface. The vehicle has at least one forward wheel and at least one aft wheel, and the forward wheel is characterized by a force normal to the instantaneous direction of motion of the vehicle. A motor actuator drives each aft wheel, and a controller governs the motor actuator or motor actuators in such a manner as to dynamically stabilize the vehicle, according to a uniform control law, when the forward wheel is in contact with the underlying surface or not. A torque is applied to the aft wheel on the basis of vehicle pitch or the force on the forward wheel normal to the direction of motion. Additionally, a periodic rotational modulation may be applied to the aft wheel, and a stabilizing torque provided based on a detected response, either of vehicle pitch or of normal force on the front wheel. Left and right motor actuators may independently control left and right aft wheels to continue turns as governed by user steering, whether or not forward wheels are in contact with the ground. | 06-10-2010 |
20130020237 | BLOOD TREATMENT SYSTEMS AND METHODS - Dialysis systems are disclosed comprising new fluid flow circuits. Systems may include blood and dialysate flow paths, where the dialysate flow path includes balancing, mixing, and/or directing circuits. Dialysate preparation may be decoupled from patient dialysis. Circuits may be defined within one or more cassettes. The fluid circuit fluid flow paths may be isolated from electrical components. A gas supply in fluid communication with the dialysate flow path and/or the dialyzer able to urge dialysate through the dialyzer and urge blood back to the patient may be included for certain emergency situations. Fluid handling devices, such as pumps, valves, and mixers that can be actuated using a control fluid, may be included. Control fluid may be delivered by an external pump or other device, which may be detachable and/or generally rigid, optionally with a diaphragm, dividing the device into first and second compartments. | 01-24-2013 |
20130037485 | BLOOD TREATMENT SYSTEMS AND METHODS - Dialysis systems are disclosed comprising new fluid flow circuits. Systems may include blood and dialysate flow paths, where the dialysate flow path includes balancing, mixing, and/or directing circuits. Dialysate preparation may be decoupled from patient dialysis. Circuits may be defined within one or more cassettes. The fluid circuit fluid flow paths may be isolated from electrical components. A gas supply in fluid communication with the dialysate flow path and/or the dialyzer able to urge dialysate through the dialyzer and urge blood back to the patient may be included for certain emergency situations. Fluid handling devices, such as pumps, valves, and mixers that can be actuated using a control fluid, may be included. Control fluid may be delivered by an external pump or other device, which may be detachable and/or generally rigid, optionally with a diaphragm dividing the device into first and second compartments. | 02-14-2013 |
20140299544 | BLOOD TREATMENT SYSTEMS AND METHODS - The present invention generally relates to hemodialysis and similar dialysis systems, including a variety of systems and methods that would make hemodialysis more efficient, easier, and/or more affordable. One aspect of the invention is generally directed to new fluid circuits for fluid flow. According to one aspect, a blood pump is configured to pump blood to a dialyzer of a hemodialysis apparatus, the blood pump comprising a pneumatically actuated or controlled reciprocating diaphragm pump. In an embodiment, the diaphragm of the pump comprises a flexible membrane formed or molded to generally conform to a curved inner wall of a pumping chamber or control chamber of the pump, wherein the diaphragm is pre-formed or molded to have a control side taking a convex shape, so that any elastic tension on the diaphragm is minimized when fully extended into a control chamber of the pump. In another aspect, a system for monitoring the adequacy of blood flow in a blood line of the hemodialysis apparatus allows a controller to suspend dialysate pumping operations if the adequacy of blood flow in the blood line is sub-optimal, and to present information on a display on the quality of blood flow in the blood line. | 10-09-2014 |
Patent application number | Description | Published |
20080272664 | PERMANENT MAGNET ELECTRO-MECHANICAL DEVICE PROVIDING MOTOR/GENERATOR FUNCTIONS - Apparatus and methods for providing and controlling a permanent magnet electro-mechanical device that functions as a motor or generator are disclosed. The electro-mechanical device uses control coils to steer magnetic flux of permanent magnets placed between stator segments. The control coils can be wound around the bridge of a stator segment, the poles of a stator segment or both. The electro-mechanical device can be single phase or multi-phase and can include controllers, sensors, a thermal/electrical insulating structure, or a reluctance gap. The stator poles are grouped and designed with an angular spacing that is based on the number of permanent magnets. The electro-mechanical device has a higher power density than conventional motors and generators and operates more efficiently, while operating at cooler temperatures. | 11-06-2008 |
20090160391 | HYBRID PERMANENT MAGNET MOTOR - An electro-mechanical device that functions as a motor or a generator and methods for constructing and using such electro-mechanical device are provided. The electro-mechanical device features permanent magnets placed in a magnetically attracting manner and inter-dispersed between control coils. The control coils are energized to create a flux opposing the flux of the permanent magnets and to create a rotational torque on the poles of a salient pole rotor before those poles align with the poles of the energized control coil stator segment. Power can be generated by placing the flux of the control coils in a steady state and mechanically rotating the salient pole rotor. The electro-mechanical device provides little or no cogging forces, high-efficiency operation, and a high power density. | 06-25-2009 |
20110089775 | Parallel Magnetic Circuit Motor - A parallel magnetic circuit motor includes a rotor without magnets and a stator with magnets. The rotor, stator and windings are configured to produce unidirectional current and torque with electrically independent phases. | 04-21-2011 |
20110254389 | HIGH FORCE ROTARY ACTUATOR - An actuator includes an upper stator with four upper poles and a lower stator with four lower poles aligned with the four upper poles. A permanent magnet is attached to the upper stator and the lower stator. Four moving armatures are positioned at terminal ends of the four upper poles and the four lower poles. Coils are wrapped around the upper stator and the lower stator. A controller selectively applies current to the coils to migrate flux created by the permanent magnet through selective poles of the upper stator and the lower stator and thereby alter the size of air gaps associated with the four moving armatures. | 10-20-2011 |
20120175994 | Magnetically Isolated Phase Interior Permanent Magnet Electrical Rotating Machine - A magnetically isolated phase stator includes a stator phase section with two sides and a magnetically inactive isolation region on each side that prevents a permanent magnetic field from being shared from the stator phase section and another stator phase section of the stator. A magnetically isolated phase interior permanent magnet electrical rotating machine includes a magnetically isolated phase stator, a rotor, and an air gap between the stator and rotor defining a rotor-stator interface, the rotor having two or multiples of two permanent magnets arranged in parallel with opposing magnetic poles to direct magnetic flux through a pole of the rotor, through the air gap of the rotor-stator interface, and through a pole of the stator. | 07-12-2012 |
20120280587 | Motor Topology with Exchangeable Components to Form Different Classes of Motors - Exchangeable stator components are selected and exchangeable rotor components are selected to transform a motor from one motor class to another motor class. A motor class includes a switched reluctance (SR) motor class, a parallel path magnetic technology (PPMT) motor class, or an interior permanent magnet (IPM) motor class. | 11-08-2012 |
20140152228 | DIVIDED PHASE AC SYNCHRONOUS MOTOR CONTROLLER - A divided phase windings circuit includes motor divided phase windings, a power switch circuit comprising at least one power switch and a direct current (DC) supply circuit all at a midpoint of the divided motor phase windings, and a non-collapsing DC power supply component to prevent the DC power supply from collapsing when the at least one power switch is on and conducting. The non-collapsing DC power supply component may include one or more of a tap from the motor divided phase windings electrically connected to the DC power supply, a secondary phase coil winding connected to the DC power supply to power the power supply, one or more resistors between the divided phase windings and the power switch circuit, one or more Zener diodes between the divided phase windings and the power switch circuit, and/or an electrical component to create a voltage drop between the motor divided phase windings and the power switch circuit to prevent the power supply from collapsing when the at least one power switch in the power switch circuit is on and conducting. | 06-05-2014 |
20140339927 | HIGH FORCE ROTARY ACTUATOR - An actuator includes a first stator with four first poles and a second stator with four second poles aligned with the four first poles. A permanent magnet is attached to the first stator and the second stator. Four moving armatures are positioned at terminal ends of the four first poles and the four second poles. Coils are wrapped around the first stator and the second stator. A controller selectively applies current to the coils to migrate flux created by the permanent magnet through selective poles of the first stator and the second stator and thereby alter the size of air gaps associated with the four moving armatures. | 11-20-2014 |
Patent application number | Description | Published |
20080262587 | EXTENDABLE AND RETRACTABLE LEAD HAVING A SNAP-FIT TERMINAL CONNECTOR - A lead having an extendable and retractable fixation mechanism has a rotating terminal pin at the terminal end which rotates the fixation mechanism at the distal end. As the terminal pin is rotated, the fixation mechanism is extended or retracted from the distal end of the lead. A threaded collar allows for the fixation mechanism to smoothly extend and retract from the lead, and allows for a 1:1 turn ratio between the terminal pin and the fixation mechanism. A fluoroscopic ring disposed at the distal end of the lead provides information during the implantation process. | 10-23-2008 |
20120271387 | CANTILEVERED SPRING CONTACT FOR AN IMPLANTABLE MEDICAL DEVICE - Some examples of an electrical contact spring for an implantable medical device includes a housing, rigid and tubular in shape, defining a housing passage extending along a longitudinal axis, from a proximal portion including a proximal lip that defines a proximal opening, to a distal portion including a distal lip that defines a distal opening and a spring disposed in the housing, the spring tubular in shape and defining a spring passage concentric to the housing passage, the spring including: a distal ring portion disposed adjacent the distal portion of the housing and physically coupled to the housing, a plurality of spring elements coupled to and extending from the distal ring portion toward the proximal portion of the housing and a proximal ring portion disposed adjacent the proximal portion of the housing, cantilevered and suspended inside of and spaced apart from the housing by the plurality of spring elements. | 10-25-2012 |
20130344751 | HEADER CONTACT FOR AN IMPLANTABLE DEVICE - An implantable medical device includes a housing and a header mounted to the housing, the header including a header body having a bore with an electrical contact located within the bore, wherein the electrical contact includes a helical coil spring having an axial bore, wherein the axial bore of the helical coil spring is aligned with a longitudinal axis of the bore. | 12-26-2013 |
20150049081 | Computer Visualization of Anatomical Items - A computer-implemented medical visualization method includes identifying a three-dimensional model of an anatomical item of a particular mammal; automatically identifying an open path in three-dimensional space through the anatomical item; fitting a smooth curve to the open path; and displaying the anatomical item and a visual representation of the smooth curve to a user on a three-dimensional imaging system. | 02-19-2015 |
20150049082 | Material Analysis of Anatomical Items - A computer-implemented method for medical device modeling includes accessing an electronic definition for a model of a three-dimensional item and an electronic definition of a three-dimensional spline relating to an internal anatomical volume; determining, with a computer-based finite element analysis system and using the electronic definitions, stresses created by the three-dimensional item along the three-dimensional spline, for different points along the three-dimensional spline; and displaying stress data generated by the finite element analysis system with a visualization system, the display of the stress data indicating levels of stress on portions of the three-dimensional item at particular locations along the three-dimensional spline. | 02-19-2015 |
20150049083 | Comparative Analysis of Anatomical Items - A computer-implemented medical visualization method includes identifying a three-dimensional model of an anatomical item of a particular mammal; displaying a moving animation of the three-dimensional model, the moving animation created from multiple frames from imaging of the anatomical item over a short time period to capture movement of the anatomical item; displaying one or more non-moving views of the three-dimensional model while the moving animation is being displayed; and in response to receiving inputs from a user, changing the displayed moving animation and the one or more non-moving views automatically in coordination with each other. | 02-19-2015 |
Patent application number | Description | Published |
20080304173 | MAGNETIC RECORDING DISK DRIVE WITH PATTERNED MEDIA AND SYSTEM FOR CLOCKING WRITE DATA - A system and method accurately clocks write data to the discrete data blocks in a patterned media disk drive. The precise time intervals between successive timing marks in the data tracks are measured by a timing mark detector that counts the integer number of write clock cycles between successive timing marks and the fractional part of a write clock cycle by detecting the phase difference between a timing mark and a reference signal. The resulting timing error is output to a write clock compensator. The write clock is capable of generating equally spaced primary phases and phases intermediate the primary phases. The compensator includes a phase rotator that controls which write clock phase is selected for output. The value in a phase register of the compensator is used to control the phase rotator to advance or retard the write clock phase, and thus to adjust its frequency and phase so as to be synchronized for writing to the data blocks. | 12-11-2008 |
20100142085 | MAGNETIC RECORDING DISK AND DISK DRIVE WITH ALTERNATING SINGLE-POLARITY POSITION ERROR SIGNAL (PES) BLOCKS FOR READ/WRITE HEAD POSITIONING - A magnetic recording disk drive has a position-error-signal (PES) servo pattern divided into at least two circumferentially adjacent fields that extend radially across the data tracks and include PES blocks that are DC magnetized in one direction, with each PES block having a magnetization opposite to the magnetization of its radially adjacent neighboring PES blocks. Each PES field is contiguous with and shifted radially relative to its circumferentially adjacent neighbor PES fields. Each PES block has a single DC magnetization, and the length of the magnetization is substantially longer than the length of the magnetizations in the other fields of the servo pattern. | 06-10-2010 |
20110149432 | Information storage device with multiple-use fields in servo pattern - An embodiment of the present invention implements some or all major servo subfunctions for a storage device in integrated servo fields comprising sequences of encoded bits having selected mathematical properties. The integrated servo field is composed of a number of encoded sequences, which are members of a selected sequence set that is constrained to preferably provide some or all of the following functions: the Servo Track Mark (STM), the Position Error Signal (PES) and location information such as the track-ID. The juxtaposition of sequences in the servo wedges is additionally constrained to increase the detectability of the contribution of adjacent sequences in the read signal. The integrated servo fields can provide a Position Error Signal (PES) in relation to the center of a data track through the amplitude of the signal read for adjacent sequences. | 06-23-2011 |
20110149433 | Information storage device with multiple-use fields in servo pattern - An embodiment of the present invention implements some or all major servo subfunctions for a storage device in integrated servo fields comprising sequences of encoded bits having selected mathematical properties. The integrated servo field is composed of a number of encoded sequences, which are members of a selected sequence set that is constrained to preferably provide some or all of the following functions: the Servo Track Mark (STM), the Position Error Signal (PES) and positional information such as the track-ID. In one embodiment the plurality sequences encoding a location identifier such as a track-ID are distributed across a set of servo wedges. A method of encoding the location identifier using a Chinese Remainder Theorem is described. | 06-23-2011 |
20110149434 | Information storage device with multiple-use fields in servo pattern - An embodiment of the present invention implements some or all major servo subfunctions for a storage device in integrated servo fields comprising sequences of encoded bits having selected mathematical properties. The integrated servo field is composed of a number of encoded sequences, which are members of a selected sequence set that is constrained to preferably provide some or all of the following functions: the Servo Track Mark (STM), the Position Error Signal (PES) and positional information such as the track-ID. The integrated servo fields can provide a Position Error Signal (PES) in relation to the center of a data track through the amplitude of the signal read for adjacent sequences. The servo system detects the sequences in the signal from the read head using a set of digital filters for the set of encoded sequences. | 06-23-2011 |
20110279924 | Patterned media for self-servowriting integrated servo fields - Pre-patterned discrete track media for self-servo writing are described. Embodiments include land and groove patterns for two or more Integrated Servo sequence fields for each servo sector in which one of the Integrated Servo sequence fields is aligned with the data track and a second sequence is offset by one-half of a track width. The lands and grooves between the Integrated Servo sequence fields are preferably the same width as those between the data tracks to facilitate planarization. Alternative embodiments include a sync feature for each servo sector formed by a selected groove and/or land pattern as a marker for the start of the servo fields. Alternative embodiments include a bootstrap zone with servo patterns that are readable when DC-magnetized. Described methods of self-servowriting include ways to adapt to eccentricity and non-circularity of pre-patterned discrete tracks with respect to the head paths. | 11-17-2011 |
Patent application number | Description | Published |
20120035458 | DETECTION, MEASUREMENT, AND IMAGING OF CELLS SUCH AS CANCER AND OTHER BIOLOGIC SUBSTANCES USING TARGETED NANOPARTICLES AND MAGNETIC PROPERTIES THEREOF - The present invention can provide a method of determining the presence, location, quantity, or a combination thereof, of a biological substance, comprising: (a) exposing a sample to a plurality of targeted nanoparticles, where each targeted nanoparticle comprises a paramagnetic nanoparticle conjugated with one or more targeting agents that preferentially bind with the biological substance, under conditions that facilitate binding of the targeting agent to at least one of the one or more biological substances; (b) subjecting the sample to a magnetic field of sufficient strength to induce magnetization of the nanoparticles; (c) measuring a magnetic field of the sample after decreasing the magnetic field applied in step b below a threshold; (d) determining the presence, location, quantity, or a combination thereof, of the one or more biologic substances from the magnetic field measured in step (c). | 02-09-2012 |
20120149029 | Magnetic Needle Biopsy - An apparatus and method for performing biopsies in-vivo using magnetically labeled nanoparticles is disclosed. One embodiment of the apparatus is called a magnetic needle. When used in a biopsy, one embodiment of the present invention collects diseased cells in-vivo which have been tagged with magnetic nanoparticles coated with receptors for specific diseased cells. | 06-14-2012 |
20120234080 | Viscosity measuring method - A method for measuring the average viscosity of a test fluid uses calibrated magnetic nanoparticles, with certain chosen hydrodynamic diameters and actual lateral dimensions (e.g. diameters), that are mixed into a small volume of the test fluid and a single magnetic relaxation curve measurement to provide data for viscosity determination. The distribution of hydrodynamic particle sizes of an ensemble of magnetic nanoparticles that are magnetically blocked at room temperature can be determined. Modifications of the method can be used to determine the distribution of viscosities in a complex fluid at the sub-microscopic level providing a novel type of viscosity measurement. | 09-20-2012 |
20120330133 | NONSURGICAL DETERMINATION OF ORGAN TRANSPLANT CONDITION - A Superconducting Quantum Interference Device (SQUID) magnetic sensor system and method can image organic transplant condition, such as status, acceptance, or rejection, in-vivo. This represents a major advane in transplant imaging technology with a new market for biomagnetic sensor devices. In-vivo transplant condition determination provides a greater range of imaging methodologies over existing methods in sensitivity, and enables early detection of rejection with the ability to determine the need for anti-rejection drugs. | 12-27-2012 |
20130090545 | METHODS AND APPARATUSES FOR THE LOCALIZATION AND TREATMENT OF CANCER - Embodiments of the present invention provide methods of detecting cancer, methods of treating cancer using targeted hyperthermia, methods of treating cancer using targeted chemical agents, methods of treating cancer comprising accurate measurements of the efficacy of treatments. The effect of nanoparticles on magnetic fields can be used to determine the location of a tumor, and a measure of the number of cells in the tumor. This location and measure can be used to guide therapy, and provide information regarding the most effective therapy to be applied. The same nanoparticles can be used to facilitate hyperthermia treatments, and to allow targeted application of chemical therapeutic agents. | 04-11-2013 |
20130121927 | DETECTION, MEASUREMENT, AND IMAGING OF CELLS SUCH AS CANCER AND OTHER BIOLOGIC SUBSTANCES USING TARGETED NANOPARTICLES AND MAGNETIC PROPERTIES THEREOF - The present invention provides methods and apparatuses for detecting, measuring, or locating cells or substances present in even very low concentrations in vivo in subjects, using targeted magnetic nanoparticles and special magnetic systems. The magnetic systems can comprise magnetizing subsystems and sensors subsystems, including as examples SQUID sensors and atomic magnetometers. The magnetic systems can detect, measure, or location particles bound by antibodies to cells or substances of predetermined types. Example magnetic systems are capable of detecting sub-nanogram amounts of these nanoparticles. | 05-16-2013 |
20130289383 | Magnetic Relaxometry using Brownian Randomization, Neel Relaxation, or Combinations Thereof - The present invention can provide a method of determining the communication of substances between a first region and a second region of a patient's body. An example method according to the present invention can comprise: (a) introducing into the first region a plurality of superparamagnetic nanoparticles, having properties such that they undergo Brownian motion that randomizes the orientation of the nanoparticles according to a predetermined characteristic time; (b) after a time sufficient to allow transport of nanoparticles from the first region to the second region, subjecting the second region to an applied magnetic field of sufficient strength to induce magnetization of individual nanoparticles, and having a substantially uniform direction throughout the second region; (c) measuring the magnetic field of the second region at a plurality of times after ceasing application of the magnetic field; (d) analyzing the measured magnetic field to detect signals that correspond to decay of the magnetic field due to randomization of the nanoparticles' orientation by Brownian motion; (e) determining the presence of nanoparticles in the second region from the signals detected in step (d). | 10-31-2013 |
20140112872 | MAGNETIC RELAXOMETRY USING MAGNETIZATION AND MEASUREMENT FIELDS - The present invention provides methods and apparatuses for detecting, measuring, or locating cells or substances present in even very low concentrations in vivo in subjects, using targeted magnetic nanoparticles and special magnetic systems. The magnetic systems can comprise magnetizing subsystems and sensors subsystems, including as examples SQUID sensors and atomic magnetometers. The magnetic systems can detect, measure, or location particles bound by antibodies to cells or substances of predetermined types. Example magnetic systems are capable of detecting sub-nanogram amounts of these nanoparticles. | 04-24-2014 |
20140322137 | Detection Of Targeted Biological Substances Using Magnetic Relaxation Of Individual Nanoparticles - The present invention can provide a method of determining the presence, location, quantity, or a combination thereof, of a biological substance, comprising: (a) exposing a sample to a plurality of targeted nanoparticles, where each targeted nanoparticle comprises a paramagnetic nanoparticle conjugated with one or more targeting agents that preferentially bind with the biological substance, under conditions that facilitate binding of the targeting agent to at least one of the one or more biological substances; (b) subjecting the sample to a magnetic field of sufficient strength to induce magnetization of the nanoparticles; (c) measuring a magnetic field of the sample after decreasing the magnetic field applied in step b below a threshold; (d) determining the presence, location, quantity, or a combination thereof, of the one or more biologic substances from the magnetic field measured in step (c). | 10-30-2014 |
Patent application number | Description | Published |
20080219087 | Fluid Mixing Apparatus and Method - Methods and apparatus are provided for influencing mixing of a first fluid injected through a slot into a second fluid flowing through a conduit, by automatically or remotely adjusting the slot width to provide at least a certain slot velocity of the first fluid being introduced into the conduit. In particular, methods and apparatus are provided for mixing control in injecting titanium tetrachloride into an oxygen stream in a process for making titanium dioxide. | 09-11-2008 |
20080260627 | Methods of Controlling the Particle of Titanium Dioxide Produced by the Chloride Process - A process for manufacturing titanium dioxide by the chloride process is provided. In one embodiment, a particle size control agent comprising an ionizing agent such as potassium chloride is introduced into the reaction zone of the oxidation reactor to control the particle size of the titanium dioxide. In a first aspect, the effectiveness of the particle size control agent in controlling the particle size of the titanium dioxide is improved by adding the particle size control agent to at least one of the reactant streams at a sufficient distance upstream of the oxidization reactor to allow the ionizing agent to efficiently ionize and the particle size control agent to thoroughly admix with the stream(s) prior to entering the reaction zone. In a second aspect, the particle size control agent comprises an ionizing agent and fumed silica. In another embodiment, the amount of alumina added to the reaction zone of the oxidization reactor is increased in order to control the particle size of the titanium dioxide. | 10-23-2008 |
20100025502 | Jet for Use in a Jet Mill Micronizer - The current invention provides an improved jet nozzle suitable for use in a micronizing jet mill or retrofitting to an existing jet mill. The improved jet nozzle incorporates a coanda effect inducing element to enhance entrainment of particles to be ground within the vortex created by the micronizing jet mill. When the jet mill uses steam to generate the jet, use of the improved nozzle will reduce energy costs by increasing the efficiency of the jet mill. | 02-04-2010 |
Patent application number | Description | Published |
20110292990 | MULTIPLE-INPUT, ON-CHIP OSCILLOSCOPE - An integrated circuit that includes a receive data path is described. The receive data path: equalizes a received analog signal, converts the resulting equalized analog signal to digital data values based on a clock signal, and recovers the clock signal in the digital data values. The integrated circuit also includes an on-chip oscilloscope. The oscilloscope includes: two comparators, a phase rotator that outputs an oscilloscope clock signal whose phase can be varied relative to that of the recovered clock signal, and an offset circuit that outputs a voltage offset. Based on the voltage offset and the oscilloscope clock signal, the comparators output digital values which can be used to determine eye patterns that correspond to the analog signal before and after equalization. The eye patterns can then be correlated with an error rate associated with the received data. | 12-01-2011 |
20110302452 | CIRCUITRY TO FACILITATE TESTING OF SERIAL INTERFACES - Circuitry to facilitate testing of serial interfaces is described. Specifically, some embodiments of the present invention facilitate testing the clock and data recovery functionality of a receiver. A serial interface can include a multiplying phase locked loop (MPLL) clock generator, a transmitter, and a receiver. The MPLL clock generator can generate a first clock signal and a second clock signal, and can vary a phase and/or frequency difference between the first clock signal and the second clock signal. During test, the transmitter and the receiver can be directly or capacitively coupled to each another. Specifically, during test, the serial interface can be configured so that the transmitter transmits data using the first clock signal, and the receiver receives data using the second clock signal. The clock and data recovery functionality of the receiver can be tested by comparing the transmitted data with the received data. | 12-08-2011 |
20110307722 | REDUCING POWER CONSUMPTION IN CLOCK AND DATA RECOVERY SYSTEMS - Some embodiments provide a clock and data recovery (CDR) system to recover clock and data information from an analog signal. The CDR system may include an integral path and a proportional path that are part of an integral-proportional control loop. The integral path may be used to track frequency changes in a clock signal that is embedded in the analog signal, while the proportional path may be used to track phase changes in the clock signal that is embedded in the analog signal. The proportional path may be executed at a first clock frequency, while the integral path may be executed at a second clock frequency that is lower than the first clock frequency to reduce the power consumption of the CDR system. | 12-15-2011 |
20110309857 | CIRCUITRY FOR MATCHING THE UP AND DOWN IMPEDANCES OF A VOLTAGE-MODE TRANSMITTER - Some embodiments of the present invention provide a voltage-mode transmitter. The transmitter can include configuration circuitry, bias circuitry, and a set of driver slices. Each driver slice can include driver transistors which drive an output value. The outputs of each driver slice can be directly or capacitively coupled with the transmitter's outputs. Each driver slice can also include one or more impedance-matching transistors which are serially coupled to at least some of the driver transistors. The configuration circuitry can configure a subset of driver slices so that the down (or up) impedance of the transmitter is within a first tolerance of a desired impedance value. The bias circuitry can bias the one or more impedance-matching transistors in each driver slice in the subset of driver slices so that the up (or down) impedance is within a second tolerance of the down (or up) impedance. | 12-22-2011 |
20110310942 | HIGHLY FLEXIBLE FRACTIONAL N FREQUENCY SYNTHESIZER - One embodiment of the present invention provides a phase-locked loop (PLL) for synthesizing a fractional frequency. The PLL can include a 1/N frequency divider, a voltage-controlled oscillator (VCO), a programmable phase mixer, and a phase detector. The programmable phase mixer can be coupled between an output of the VCO and an input of the frequency divider, wherein the programmable phase mixer is configured to receive the output clock signal from the VCO and generate a first clock signal of frequency f | 12-22-2011 |
20110310947 | METHOD AND APPARATUS FOR PERFORMING ADAPTIVE EQUALIZATION - Systems and techniques for adapting and/or optimizing an equalizer of a receiver are described. The equalizer's behavior can be adjusted by modifying one or more equalization parameters. At the beginning of the adaptation and/or optimization process, the system can determine robust initial values for the one or more equalization parameters. The system can then adapt and/or optimize the equalizer by iteratively adjusting the one or more equalization parameters. Specifically, in each iteration, the system can use the receiver's clock and data recovery (CDR) circuitry to determine the number of early and late data transitions associated with one or more data patterns. Next, the system can adjust the one or more equalization parameters so that, for each data pattern in the one or more data patterns, the ratio between the number of early data transitions and the number of late data transitions is substantially equal to a desired value. | 12-22-2011 |
20110311009 | PATTERN AGNOSTIC ON-DIE SCOPE - An on-die scope is described. The on-die scope can include one or more scope slicers, phase sweeping circuitry, voltage sweeping circuitry, and eye-diagram data collection circuitry. The clock and data recovery circuitry can receive an input signal, and output a recovered clock signal and a recovered bit-stream. The phase sweeping circuitry can receive the recovered clock signal, and output the scope clock signal by adding a phase offset to the recovered clock signal. A scope slicer can receive the voltage threshold, the scope clock signal, and the input signal, and output a scope bit-stream. The eye-diagram data collection circuitry can detect one or more bit-patterns in the recovered bit-stream, and modify values of one or more scope counters based solely or partly on the scope bit-stream and the recovered bit-stream. | 12-22-2011 |
Patent application number | Description | Published |
20080199649 | VICINAL GALLIUM NITRIDE SUBSTRATE FOR HIGH QUALITY HOMOEPITAXY - A III-V nitride, e.g., GaN, substrate including a (0001) surface offcut from the <0001> direction predominantly toward a direction selected from the group consisting of <10-10> and <11-20> directions, at an offcut angle in a range that is from about 0.2 to about 10 degrees, wherein the surface has a RMS roughness measured by 50×50 μm | 08-21-2008 |
20100148320 | VICINAL GALLIUM NITRIDE SUBSTRATE FOR HIGH QUALITY HOMOEPITAXY - A III-V nitride, e.g., GaN, substrate including a (0001) surface offcut from the <0001> direction predominantly toward a direction selected from the group consisting of <10-10> and <11-20> directions, at an offcut angle in a range that is from about 0.2 to about 10 degrees, wherein the surface has a RMS roughness measured by 50×50 μm | 06-17-2010 |
20100289122 | III-V NITRIDE SUBSTRATE BOULE AND METHOD OF MAKING AND USING THE SAME - A boule formed by high rate vapor phase growth of Group III-V nitride boules (ingots) on native nitride seeds, from which wafers may be derived for fabrication of microelectronic device structures. The boule is of microelectronic device quality, e.g., having a transverse dimension greater than 1 centimeter, a length greater than 1 millimeter, and a top surface defect density of less than 10 | 11-18-2010 |
20100301351 | HIGH VOLTAGE SWITCHING DEVICES AND PROCESS FOR FORMING SAME - The present invention relates to various switching device structures including Schottky diode, P—N diode, and P—I—N diode, which are characterized by low defect density, low crack density, low pit density and sufficient thickness (>2.5 um) GaN layers of low dopant concentration (<1E16 cm | 12-02-2010 |
20120181547 | HIGH VOLTAGE SWITCHING DEVICES AND PROCESS FOR FORMING SAME - The present invention relates to various switching device structures including Schottky diode, P-N diode, and P-I-N diode, which are characterized by low defect density, low crack density, low pit density and sufficient thickness (>2.5 um) GaN layers of low dopant concentration (<1E16 cm | 07-19-2012 |
20130193444 | HIGH VOLTAGE SWITCHING DEVICES AND PROCESS FOR FORMING SAME - The present invention relates to various switching device structures including Schottky diode, P-N diode, and P-I-N diode, which are characterized by low defect density, low crack density, low pit density and sufficient thickness (>2.5 um) GaN layers of low dopant concentration (<1E16 cm | 08-01-2013 |
Patent application number | Description | Published |
20100062770 | MOBILE HANDSET EXTENSION TO A DEVICE - System(s) and method(s) are provided for extension of mobile operation to a device. An extension interface comprises a client component within a mobile that is linked to a client component within the device. Extension of mobile operation is secured via delivery of credentials associated with the mobile to the device. Delivery of credentials is temporary and typically spans the period during which mobile operation is extended to the device. Mobile's application(s) and content(s) can be conveyed to the device for utilization therein. An emulation component that can reside at least in part on the client component within the device can emulate mobile operation. Client component within the mobile can include at least in part (i) a component that downloads drivers for communication with, and utilization of, the device to which mobile operation is extended, and (ii) a component that can scan for wireless-capable devices to extend mobile service thereto. | 03-11-2010 |
20120076016 | FEMTOCELL AUTOMATIC SPEED TEST - A system and methodology that facilitates automatically determining performance parameters of a broadband network connected to a femto access point (FAP) is provided. In particular, the system automatically performs a broadband test, in the background, to detect the current speed, performance, throughput, etc. of the broadband network. The results of the speed test are then provided to the customer and/or to the femtocell carrier's Customer Care team, to facilitate diagnosing and correcting problems with the femtocell's performance. Specifically, the system notifies the customer of the broadband test results via short message service (SMS) message(s), email and/or posts the results on a femtocell management web page accessed by the customer. In addition, the femtocell automatic broadband test results can also be posted to an online tool that is accessed by authorized entities within the femtocell carrier's Customer Care team to facilitate easy and accurate diagnosis of femtocell performance issues. | 03-29-2012 |
20120077463 | REMINDERS BASED ON DEVICE PRESENCE - The disclosed subject matter relates to an architecture that can facilitate and/or transmit reminders based upon device presence techniques in connection with a wireless communications network. For example, when certain mobile devices register with a particular network entity (e.g., a femtocell) that services a particular target location (e.g., place of residence), then such registration can be leveraged to indicate presence at the target location. Accordingly, reminders can be configured by custodian devices and delivered to subservient devices if certain predetermined conditions or criteria are satisfied in connection with the presence information. | 03-29-2012 |
20120077493 | NOTIFICATIONS BASED ON DEVICE PRESENCE - The disclosed subject matter relates to an architecture that can facilitate and/or transmit notifications based upon device presence techniques in connection with a wireless communications network. For example, when certain mobile devices register with a particular network entity (e.g., a femtocell) that services a particular target location (e.g., place of residence), then such registration can be leveraged to indicate presence at the target location. Accordingly, notifications can be delivered to custodian devices that indicate the presence information if certain predetermined conditions or criteria are satisfied. | 03-29-2012 |
20120083270 | FEMTOCELL APPROVED USER LIST MANAGEMENT VIA SHORT MESSAGE SERVICE (SMS) - A system and methodology that facilitates user friendly and/or dynamic femtocell access provisioning based on Short Message Service (SMS) communication is provided. In particular, the system can enable users to update and/or view a femto access control list associated with a femtocell by employing SMS messages. Moreover, the system can receive a SMS message from a user equipment (UE) requesting an action (e.g., add, remove, and/or view an entry within a femto access control list) associated with femtocell access and identify a femtocell associated with the UE. Further, the system can analyze the SMS, request confirmation to perform the action, and execute the action on receiving confirmation from the UE. | 04-05-2012 |
20120151354 | SYNCHRONIZATION BASED ON DEVICE PRESENCE - The disclosed subject matter relates to an architecture that can facilitate initiation of an automatic synchronization operation based upon presence information in connection with a wireless communications network. For example, when certain mobile devices register with a particular network entity (e.g., a femtocell) that services a particular target location (e.g., place of residence), then such registration can be leveraged to indicate presence at the target location. Accordingly, synchronization between the mobile device and other devices can be automatically initiated, without requiring input or effort by a user, or even that the user remembers to perform the synchronization operation. Moreover, the synchronization operation can be wireless, so connection cables need not be maintained or employed. | 06-14-2012 |
20130244650 | NOTIFICATIONS BASED ON DEVICE PRESENCE - An architecture is provided that can facilitate and/or transmit notifications based upon device presence techniques in connection with a wireless communications network. For example, when certain mobile devices register with a particular network entity (e.g., a femtocell) that services a particular target location (e.g., place of residence), then such registration can be leveraged to indicate presence at the target location. Accordingly, notifications can be delivered to custodian devices that indicate the presence information if certain predetermined conditions or criteria are satisfied. | 09-19-2013 |
20140248875 | REMINDERS BASED ON DEVICE PRESENCE - An architecture can facilitate and/or transmit reminders based upon device presence techniques in connection with a wireless communications network. For example, when certain mobile devices register with a particular network entity (e.g., a femtocell) that services a particular target location (e.g., place of residence), then such registration can be leveraged to indicate presence at the target location. Accordingly, reminders can be configured by custodian devices and delivered to subservient devices if certain predetermined conditions or criteria are satisfied in connection with the presence information. | 09-04-2014 |
20140256287 | MOBILE HANDSET EXTENSION TO A DEVICE - Mobile operation is extended to a device. An extension interface comprises a client component within a mobile that is linked to a client component within the device. Extension of mobile operation is secured via delivery of credentials associated with the mobile to the device. Delivery of credentials is temporary and typically spans the period during which mobile operation is extended to the device. Application(s) and content(s) can be conveyed to the device for utilization therein. An emulation component that can reside at least in part on the client component within the device can emulate mobile operation. Client component within the mobile can include at least in part (i) a component that downloads drivers for communication with, and utilization of, the device to which mobile operation is extended, and (ii) a component that can scan for wireless-capable devices to extend mobile service thereto. | 09-11-2014 |
20150038113 | MOBILE HANDSET EXTENSION TO A DEVICE - Mobile operation is extended to a device. An extension interface comprises a client component within a mobile that is linked to a client component within the device. Extension of mobile operation is secured via delivery of credentials associated with the mobile to the device. Delivery of credentials is temporary and typically spans the period during which mobile operation is extended to the device. Application(s) and content(s) can be conveyed to the device for utilization therein. An emulation component that can reside at least in part on the client component within the device can emulate mobile operation. Client component within the mobile can include at least in part (i) a component that downloads drivers for communication with, and utilization of, the device to which mobile operation is extended, and (ii) a component that can scan for wireless-capable devices to extend mobile service thereto. | 02-05-2015 |
Patent application number | Description | Published |
20090305511 | Methods of Treating Semiconductor Substrates, Methods Of Forming Openings During Semiconductor Fabrication, And Methods Of Removing Particles From Over Semiconductor Substrates - Some embodiments include methods of treating semiconductor substrates. The substrates may be exposed to one or more conditions that vary continuously. The conditions may include temperature gradients, concentration gradients of one or more compositions that quench etchant, pH gradients to assist in removing particles, and/or concentration gradients of one or more compositions that assist in removing particles. The continuously varying conditions may be imparted by placing the semiconductor substrates in a bath of flowing rinsing solution, with the bath having at least two feed lines that provide the rinsing solution therein. One of the feed lines may be at a first condition, and the other may be at a second condition that is different from the first condition. The relative amount of rinsing solution provided to the bath by each feed line may be varied to continuously vary the condition within the bath. | 12-10-2009 |
20130302995 | Methods Of Treating Semiconductor Substrates, Methods Of Forming Openings During Semiconductor Fabrication, And Methods Of Removing Particles From Over Semiconductor Substrates - Some embodiments include methods of treating semiconductor substrates. The substrates may be exposed to one or more conditions that vary continuously. The conditions may include temperature gradients, concentration gradients of one or more compositions that quench etchant, pH gradients to assist in removing particles, and/or concentration gradients of one or more compositions that assist in removing particles. The continuously varying conditions may be imparted by placing the semiconductor substrates in a bath of flowing rinsing solution, with the bath having at least two feed lines that provide the rinsing solution therein. One of the feed lines may be at a first condition, and the other may be at a second condition that is different from the first condition. The relative amount of rinsing solution provided to the bath by each feed line may be varied to continuously vary the condition within the bath. | 11-14-2013 |
20130334594 | RECESSED GATE MEMORY APPARATUSES AND METHODS - Some embodiments include a memory device and a method of forming the memory device. One such memory device includes a string of stacked memory cells. Each of the memory cells in the string includes a charge storage structure and a recessed control gate. The recessed control gate has a substantially smooth surface separated from the charge storage structure by dielectric material. One such method includes etching heavily boron doped polysilicon selective to oxide to form a recessed control gate having a surface with nubs. A smoothing solution is applied to the surface of the recessed control gate to smoothen the nubs. Additional apparatuses and methods are described. | 12-19-2013 |
Patent application number | Description | Published |
20090025684 | SYSTEM, METHOD AND COMPUTER READABLE MEDIA FOR CONTROLLING AT LEAST ONE FUEL DELIVERY CHARACTERISTIC DURING A COMBUSTION EVENT WITHIN AN ENGINE - A system is provided for controlling at least one fuel delivery characteristic during a combustion event within an engine. The system includes an accumulator having a variable volume, where the accumulator is configured to hold fuel at a variable pressure based on the variable volume. The system further includes a combustion chamber coupled to the accumulator. The variable volume is varied during the combustion event such that at least one fuel delivery characteristic of the fuel delivered from the accumulator into the combustion chamber is varied during the combustion event. A method and computer readable media are also provided for controlling at least one fuel delivery characteristic during a combustion event within an engine. | 01-29-2009 |
20100030448 | METHOD AND SYSTEM FOR REDUCING UNBURNED FUEL AND OIL FROM EXHAUST MANIFOLDS - Methods and systems are provided for operating an internal combustion engine having an exhaust system and a plurality of cylinders that utilize fuel and/or oil for combustion and engine lubrication purposes. In one example, a method comprises, while the engine is operating in a low-load mode or an idle mode, successively operating distinct subsets of said cylinders at a cylinder load sufficient to increase an exhaust temperature for burning unburned fuel and/or oil deposited in the cylinders or engine exhaust system. Herein, each successively operated subset comprises at least one but fewer than all of the plurality of cylinders, and the cylinders that are not currently being operated in a subset are operated in a low- or no-fuel mode. | 02-04-2010 |
20100126444 | SYSTEM AND METHOD FOR VARYING A DURATION OF A CLOSING PHASE OF AN INTAKE VALVE OF AN ENGINE - A system is provided for varying a duration of a closing phase of an intake valve of an engine. The system includes a tappet assembly coupled to the intake valve, where the tappet assembly includes a first tappet body and a second tappet body within a guide housing. The system also includes a cam coupled to the main shaft. The cam engages the tappet assembly to initiate the relative oscillation of the first tappet body to the second tappet body. The system also includes a hydraulic piston positioned within the guide housing and coupled to the first tappet body. The hydraulic piston selectively varies a duration of the relative oscillation of the first tappet body to the second tappet body based upon a parameter of a hydraulic fluid supplied to the hydraulic piston, to selectively vary the duration of the closing phase of the intake valve. | 05-27-2010 |
20110253113 | METHODS AND SYSTEMS FOR OPERATING AN ENGINE - Various methods and systems are provided for operating an internal combustion engine, the engine having a plurality of cylinders including one or more donor cylinders and one or more non-donor cylinders. In one example, a method includes, during an exhaust gas recirculation cooler heating mode, operating at least one of the donor cylinders at a cylinder load sufficient to increase an exhaust temperature for regenerating an exhaust gas recirculation cooler, and operating at least one of the non-donor cylinders in a low- or no-fuel mode. | 10-20-2011 |
Patent application number | Description | Published |
20090006899 | ERROR CORRECTING CODE WITH CHIP KILL CAPABILITY AND POWER SAVING ENHANCEMENT - A method and system are disclosed for detecting memory chip failure in a computer memory system. The method comprises the steps of accessing user data from a set of user data chips, and testing the user data for errors using data from a set of system data chips. This testing is done by generating a sequence of check symbols from the user data, grouping the user data into a sequence of data symbols, and computing a specified sequence of syndromes. If all the syndromes are zero, the user data has no errors. If one of the syndromes is non-zero, then a set of discriminator expressions are computed, and used to determine whether a single or double symbol error has occurred. In the preferred embodiment, less than two full system data chips are used for testing and correcting the user data. | 01-01-2009 |
20110283029 | IMPLEMENTING ELECTRONIC CHIP IDENTIFICATION (ECID) EXCHANGE FOR NETWORK SECURITY - A method and circuit for implementing electronic chip identification (ECID) exchange for network security in an interconnect system, and a design structure on which the subject circuit resides are provided. Each interconnect chip includes an ECID for the interconnect chip, each ECID is unique and is permanently stored on each interconnect chip. Each interconnect chip sends predefined exchange identification (EXID) messages including the ECID across links to other interconnect chips in the interconnect system. Each interconnect chip compares a received EXID with a system list for the interconnect system to verify validity of the sending interconnect chip. | 11-17-2011 |
20140233566 | DIRECTED ROUTE LOAD/STORE PACKETS FOR DISTRIBUTED SWITCH INITIALIZATION - Techniques are described for transmitting a packet from a source switch module to a destination switch module. Embodiments include receiving, at a first switch module, a packet that includes (i) an ordered listing of Ethernet link identifiers, specifying a path to the destination switch module and (ii) payload data to be processed at the destination switch module. Embodiments determine that the first switch module is not a destination of the packet, based on the ordered listing of Ethernet link identifiers. Additionally, an Ethernet port of the first switch module on which to transmit the packet is determined based on the ordered listing of Ethernet link identifiers. Embodiments then transmit the packet to a second switch module using the determined Ethernet port of the first switch module. | 08-21-2014 |
20140233578 | DIRECTED ROUTE LOAD/STORE PACKETS FOR DISTRIBUTED SWITCH INITIALIZATION - Techniques are described for transmitting a packet from a source switch module to a destination switch module. Embodiments include determining, at the destination switch module, a path from the source switch module to the destination switch module. Path information specifying the determined path from the source switch module to the destination switch module is transmitted from the destination switch module to the source switch module. Additionally, embodiments include receiving, at the destination switch module, from the source switch module, a packet that includes (i) at least a portion of the path information and (ii) payload data to be processed at the destination switch module, wherein the packet was routed using the at least a portion of the path information. The payload data within the received packet is processing by the destination switch module. | 08-21-2014 |
20140233579 | DIRECTED ROUTE LOAD/STORE PACKETS FOR DISTRIBUTED SWITCH INITIALIZATION - Techniques are described for transmitting a packet from a source switch module to a destination switch module. Embodiments receive, at the source switch module, from the destination switch module, path information specifying a path from the source switch module to the destination switch module. Upon detecting an occurrence of a predefined event, a packet is generated that includes (i) the received path information and (ii) payload data to be processed at the destination switch module. Embodiments determine an Ethernet port of the source switch module on which to transmit the packet, based on the received path information. The packet is transmitted to a second switch module using the determined Ethernet port. | 08-21-2014 |
20140269692 | DIRECTED ROUTE LOAD/STORE PACKETS FOR DISTRIBUTED SWITCH INITIALIZATION - Techniques for transmitting a packet from a source switch module to a destination switch module. Embodiments retrieve path information specifying a route to the destination switch module. A packet is created that includes (i) at least a portion of the path information and (ii) a set of load/store operations to be executed by the destination switch module. Embodiments then transmit the packet to a first switch module using a first port, the first port specified in the retrieved path information. The first switch module is configured to transmit the packet based on the at least a portion of the path information in the packet, and the destination switch module is configured, upon receiving the packet, to copy the set of load/store operations into an execution buffer to be automatically executed. | 09-18-2014 |
20140269693 | DIRECTED ROUTE LOAD/STORE PACKETS FOR DISTRIBUTED SWITCH INITIALIZATION - Techniques for transmitting a packet from a source switch module to a destination switch module. Embodiments receive, at a first port of a first switch module, a packet that includes (i) path information specifying a route to the destination switch module and (ii) a set of load/store operations to be executed by the destination switch module. An indication of the first port is inserted into a return path information portion of the received packet. Upon determining that the first switch module is not the destination switch module, embodiments transmit the packet to a second switch module using a second port, the second port specified in the path information of the received packet, wherein the destination switch module is configured, upon receiving the packet, to copy the set of load/store operations into an execution buffer to be automatically executed. | 09-18-2014 |
20140269694 | DIRECTED ROUTE LOAD/STORE PACKETS FOR DISTRIBUTED SWITCH INITIALIZATION - Techniques for transmitting a packet from a source switch module to a destination switch module. Embodiments receive, at a first port of a first switch module, a packet that includes (i) path information specifying a route to the destination switch module, (ii) a set of load/store operations to be executed by the destination switch module and (iii) return path information specifying a route from the destination switch module to the source switch module. Upon determining that the first switch module is the destination switch module, the set of load/store operations are copied from the received packet into an execution buffer for automatic execution. Once the set of load/store operations are executed, embodiments transmit the packet to a second switch module using the first port on which the packet was received. | 09-18-2014 |