Patents Issued in July 6, 2004
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Patent number: 6759803Abstract: The light source has an LED, preferably produced for the surface-mounting technique, embedded in a transparent material filling. A converter substance is integrated in the filling for the at least partial wavelength conversion of the light emitted by the LED. A lens is glued onto the transparent material filling. The material filling has a convex surface and the lens has a concave underside entering into a form fit with the convex surface of the material filling.Type: GrantFiled: October 22, 2001Date of Patent: July 6, 2004Assignee: OSRAM OPTO Semiconductors GmbH & Co. OHGInventor: Jörg-Erich Sorg
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Patent number: 6759804Abstract: Illumination device with at least one LED as light source, the LED emitting primary radiation in the range from 380 to 420 nm, this radiation being partially or completely converted into longer-wave radiation by phosphors which are exposed to the primary radiation from the LED, the conversion taking place at least with the aid of a phosphor which emits over a broad band and originates from the class of the (Eu,Mn)-coactivated halophosphates, the cation M representing one of the metals Sr, Ca, Ba.Type: GrantFiled: September 12, 2002Date of Patent: July 6, 2004Assignee: Patent-Treuhand-Gesellschaft für Elektrische Glühlampen mbHInventors: Andries Ellens, Günter Huber, Robert Mc Sweeney
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Patent number: 6759805Abstract: A circular filament lamp comprises a filament supported within an envelope which comprises a tube formed as the major part of a circle. The ends of the tube terminate in pinch seals through which extend current carrying assemblies connected to the filament. The pinch seals overlap one another circumferentially of the lamp, and are offset from one another on either side of a plane containing the axis of the filament.Type: GrantFiled: March 15, 2001Date of Patent: July 6, 2004Assignee: General Electric CompanyInventors: Francis Gerard de Cort, Derek Peter Hurst
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Patent number: 6759806Abstract: A high pressure discharge lamp includes a quartz glass bulb, a conductive element which is sealed at a sealing portion of the bulb, and a pair of electrodes. Each electrode is disposed in the quartz glass bulb so as to be opposite the other and connected to the conductive element. A part of each electrode is sealed with the quartz glass bulb at the sealing portion so as to generate a contacting portion formed by the part of each electrode and the bulb. The maximum length, Lmax, of the contacting portion is defined as: Lmax (mm)≦200/(P×D); and the minimum length, Lmin, of the contacting portion is defined as: Lmin (mm)≧0.8/(D2×&pgr;) or Lmin (mm)≧0.7 whichever is longer, where D is the diameter (mm) of the electrode and P is the power (W) supplied to the electrode.Type: GrantFiled: March 12, 2001Date of Patent: July 6, 2004Assignee: NEC Microwave Tube, Ltd.Inventors: Tatsuya Uchikawa, Kazuhisa Nishida
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Patent number: 6759807Abstract: A multi-grid ion beam source has an extraction grid, an acceleration grid, a focus grid, and a shield grid to produce a highly collimated ion beam. A five grid ion beam source is also disclosed having two shield grids. The extraction grid has a high positive potential and covers a plasma chamber containing plasma. The acceleration grid has a non-positive potential. The focus grid is positioned between the acceleration grid and the shield grid. The combination of the extraction grid and the acceleration grid extracts ions from the plasma. The focus grid acts to change momentum of the ions exiting the acceleration grid, focusing the ions into a more collimated ion beam than previous approaches. In one embodiment, the focus grid has a large positive potential. In another embodiment, the focus grid has a large negative potential.Type: GrantFiled: April 4, 2002Date of Patent: July 6, 2004Assignee: Veeco Instruments, Inc.Inventor: Erik Karl Kristian Wåhlin
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Patent number: 6759808Abstract: An apparatus and method which maintains plasma discharges (for instance 25) in containers (for instance 20) which have an internal section of 1 cm or less in width are described. The very small cross-section plasma discharges are useful in MEMS devices, in spectrometers and in spectroscopy.Type: GrantFiled: October 25, 2002Date of Patent: July 6, 2004Assignee: Board of Trustees of Michigan State UniversityInventors: Timothy A. Grotjohn, Jes Asmussen, Andy Wijaya
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Patent number: 6759809Abstract: The graphics display system includes an electroluminescent lamp which has a connector member which includes electrical pin connections which are connected to the illuminating assembly of the lamp. The lamp also includes a graphic image portion which results in a lighted image when the lamp is illuminated. The lamp fits into a base assembly which includes a socket arrangement which receives the connector member of the lamp. The socket portion includes electrically conductive spring clips which mate with the electrical pin connections on the connecting member and firmly hold the lamp in place when the lamp is properly inserted into the socket. The electrically conductive spring clips are connected to a source of electrical signals for illumination of the lamp. The system also includes a green filter applied to a surface of the lamp, and a clear substrate applied to the upper surface of the filter. The graphic image is printed into the substrate.Type: GrantFiled: July 19, 2002Date of Patent: July 6, 2004Inventor: Gary M. Grant
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Patent number: 6759810Abstract: A transmission structure for animated ornamental lighting comprising an ornamental body, at least one transmission device mounted within said ornamental body, at least one illumination element mounted with the ornamental body 11; and at least one transmission structure connecting the transmission device to the ornamental body, whereby the transmission structure to transmit smooth motions to the ornamental body in order to adjust the moving direction, reducing or eliminating torque, causing high efficiency and extending the life-span of the transmission device.Type: GrantFiled: December 23, 2002Date of Patent: July 6, 2004Inventor: Wen-Hua Pan
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Patent number: 6759811Abstract: A light source device with a mercury lamp, in the case of formation of a bridging short circuit of the gap between the electrodes of the discharge lamp caused by mercury, to prevent the light source device from no longer being usable because the difference between a defective device and one with such a bridging short circuit cannot be ascertained, has a means for determining that a bridging short circuit has formed in the gap between the electrodes. Furthermore, various manners for eliminating the bridging short circuit are provided including those that make use of vibration, heat, dielectric discharge or Lorenz forces.Type: GrantFiled: July 12, 2002Date of Patent: July 6, 2004Assignee: Ushiodenki Kabushiki KaishaInventors: Masashi Okamoto, Tomohiro Yamamoto, Minoru Fukuda
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Patent number: 6759812Abstract: A discharge lamp lighting circuit 1 has a DC-DC conversion circuit 3 for receiving DC power supply and converting the input voltage into positive and negative output voltages and a DC-AC conversion circuit 4 having a plurality of half bridges for receiving the output voltages of the DC-DC conversion circuit and outputting either positive or negative voltage. It is provided with an anomaly detection circuit 8, if the positive and negative output voltages or the output voltages of the half bridges become lower than a threshold value, for determining that a failure occurs in any of the components making up the half bridge. A command is issued for turning off the components of the half bridge wherein the failure occurs, and the operation of the DC-DC conversion circuit 3 corresponding to the voltage polarity to be output by the half bridge is stopped.Type: GrantFiled: August 30, 2002Date of Patent: July 6, 2004Assignee: Koito Manufacturing Co., Ltd.Inventors: Masayasu Ito, Hitoshi Takeda
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Patent number: 6759813Abstract: A novel operating circuit for a low-pressure gas discharge lamp 1 in the case of which a digital controller 12 is designed such that by gradually lowering the operating frequency in the ignition procedure it initiates shutdown operations of a safety shutdown device for excessive currents through a lamp inductor 10 in order thereafter to increase the operating frequency somewhat. It is possible overall in this way to achieve an ignition, for example by repeated pulsed ignition operations as far as shutdown operations, or else by a continuous ignition operation at a minimum frequency at which no shutdown operation occurs. The invention has the advantage of being insensitive to temperature fluctuations and component tolerances and, moreover, of permitting the lamp inductor 10 to have comparatively small dimensions.Type: GrantFiled: February 6, 2003Date of Patent: July 6, 2004Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbHInventors: Olaf Busse, Klaus Orth
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Patent number: 6759814Abstract: An illuminator suitable for accurate colorimetric work in electronic imaging and traditional photograghic environments uses an integrating chamber, a plurality of light emitting diodes (LEDs) and a controller for controlling the emitted energy form the LED. An LED support member assures that the beam of energy will be directed along a predetermined path between the energy inlet end and energy outlet end of the integrating chamber. Energy of a predetermined wavelength is filtered from entering the integrating chamber.Type: GrantFiled: March 28, 2002Date of Patent: July 6, 2004Assignee: Eastman Kodak CompanyInventors: Richard M. Vogel, Erin S. Wanek, James M. Enge, Bruce H. Pillman
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Patent number: 6759815Abstract: A group of an upper coma correction coil and an upper four-pole coil is positioned in opposition to a group of a lower coma correction coil and a lower four-pole coil, with respect to an electron beam. A first circuit is composed of a circuit in which the lower four-pole coil and a first diode are connected in series is connected in parallel to the upper coma correction coil. A second circuit is composed of a circuit in which the upper four-pole coil and a second diode are connected in series is connected in parallel to the lower coma correction coil. The first circuit and the second circuit connected in series compose a YH correction circuit. The first diode and the second diode are positioned so as to have opposite polarities. Vertical deflection current is diverted to the YH correction circuit.Type: GrantFiled: August 30, 2002Date of Patent: July 6, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Etsuji Tagami
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Patent number: 6759816Abstract: The invention is a non-contact optical tape tension sensor for a tape drive. A light source directs an incident beam to the tape in a region of the tape path near where the tape bends. The amount of divergence of the reflected light is related to the curvature of the tape, and thus to the tape tension. The reflected light is passed through an aperture to a photodetector that detects the amount of the divergent beam passing through the aperture. The photodetector output is input to the tape drive controller that controls the currents to the supply and take-up motors to thereby maintain the tape tension within the desired range.Type: GrantFiled: August 30, 2002Date of Patent: July 6, 2004Assignee: International Business Machines CorporationInventor: James H. Eaton
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Patent number: 6759817Abstract: A window lifter system comprises a first window lifter motor and a master control device for the first window lifter motor. The master control device is able to detect a position of a window pane driven by the first window lifter motor and to drive the first window lifter motor at a variable speed. The system further comprises at least one second window lifter motor and a slave control device for the second window lifter motor. The slave control device is able to detect a position of a window pane driven by the second window lifter motor and to drive the second window lifter motor at a variable speed. A bus system is provided by means of which the master and slave control devices are able to communicate with each other. There is also proposed a method of controlling such a window lifter system.Type: GrantFiled: April 17, 2002Date of Patent: July 6, 2004Assignee: ArvinMeritor GmbHInventor: Gerhard Mersch
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Patent number: 6759818Abstract: To realize structure simplification and reduction in manufacturing cost without lowering power transmission efficiency and reliability. The present invention includes a first motor 5 and a second motor 6, and a lead 2 of a ball screw 12 is disposed coaxially with a motor rotary shaft 5a on a first motor 5 side and a nut 3 of the ball screw 12 is disposed coaxially with a motor rotary shaft 6a on a second motor 6 side so that the first motor 5 and the second motor 6 are connected to each other via the ball screw 12.Type: GrantFiled: May 31, 2002Date of Patent: July 6, 2004Assignee: IHI Aerospace Co., Ltd.Inventor: Hitoshi Oyori
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Patent number: 6759819Abstract: A rotation detection circuit of a dc brushless motor using a fixed bias voltage includes a transistor, and a signal adjuster. The signal adjuster is connected in series between the transistor and driver circuit of the dc brushless motor, for adjusting a signal output by the driver circuit to the according to a fixed bias voltage. The signal adjuster can be selectively supplied with a fixed bias voltage or connected in series with a zener diode. The signal adjuster can be adjusted according to the characteristics of the motor driver circuit, thereby enhancing the design of the rotation detection circuit.Type: GrantFiled: March 21, 2002Date of Patent: July 6, 2004Assignee: Sunonwealth Electric Machine Industry Co., Ltd.Inventors: Alex Horng, Ying-Ya Lu, Ming-Sheng Wang
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Patent number: 6759820Abstract: The invention concerns an arrangement for powering a load (12) that has non-continuous power consumption from a DC power supply (UB). The arrangement has a DC link circuit (14, 22) to which said load (12) can be connected and with which is associated a capacitor (21) that is suitable for briefly supplying energy to the load. A current regulator (24, 30) is provided for connecting the DC link circuit (14, 22) to the DC power supply (UB) in order to deliver a substantially constant current (i) to said capacitor (21) and to a load (12) connected to the link circuit. The target value of said current regulator (30) is adjusted adaptively, by means of a second regulator (34), to the instantaneous power demand of the load (12). An arrangement of this kind can also be referred to as an active filter that is particularly suitable for electronically commutated motors and for motors with a PWM current controller.Type: GrantFiled: July 24, 2002Date of Patent: July 6, 2004Assignee: Papst-Motoren GmbH & Co. KGInventor: Arno Karwath
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Patent number: 6759821Abstract: A disk drive apparatus reproduces a signal from a disk and/or records an signal on the disk. A position detecting part produces a position signal in response to a rotation of a rotor. An activation operation block controls active operation of first and second power amplifying parts in response to the position signal. A signal producing part produces a slope signal which repeats a slope waveform a plural times during one period of the position signal. The shaping part produces first and second activation control signals which responds with the slope signal. The activation operation block controls the first and second power amplifying parts responding with the first and second activation control signals. Therefore, an excellent disk drive apparatus with reduced acoustic noise and reduced vibration can be realized by using only one position signal of one position sensor.Type: GrantFiled: June 2, 2003Date of Patent: July 6, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Makoto Gotou
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Patent number: 6759822Abstract: Systems and methods are described for improving the performance of electric motors which employ commutators and brushes. A method includes improving the performance of an electric motor that employs a commutator and brushes comprising: sending power to the motor, reading a set of data from the motor using an analog to digital converter and a microcontroller configured to execute digital signal processing software, setting a speed for the motor, and maintaining the speed for the motor based on the set of data as analyzed by the microcontroller.Type: GrantFiled: December 18, 2002Date of Patent: July 6, 2004Assignee: Southern Illinois UniversityInventor: Ronald K. Marusarz
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Patent number: 6759823Abstract: A brushless d.c. drive including a synchronous motor, including a multiphase armature winding, a switching device controlled by an electronic controller and connected upstream from the armature winding for commutation of the armature winding, and a device for generating a fail-silent response with simple circuitry measures and without any external components, and which includes a separating apparatus, arrangement or structure in the armature winding to respond in the event of a fault and separate the connections between the winding phases, including at the neutral point.Type: GrantFiled: March 20, 2002Date of Patent: July 6, 2004Assignee: Robert Bosch GmbHInventor: Harald Witzig
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Patent number: 6759824Abstract: A motor controller includes DC motor, driving mechanism, voltage generator circuit and control unit. The driving mechanism moves an object having a predetermined mass against a load applied to the object and by transmitting a rotational force of the motor to the object. The voltage generator circuit generates first and second voltages. The first voltage is high enough to rotate the motor to such a degree as to get the object moved by the driving mechanism. The second voltage has the same polarity as the first voltage and has such amplitude as to prevent the motor from rotating either in a backward direction due to a cogging torque or in a forward direction. The control unit controls the voltage generator circuit in such a manner that the voltage generator circuit applies the second voltage to the motor after having applied the first voltage to the motor.Type: GrantFiled: July 12, 2002Date of Patent: July 6, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toru Kawabata, Yoshihiro Mushika
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Patent number: 6759825Abstract: The invention concerns a feed system control method and apparatus that can calculate an accurate backlash amount and can accomplish highly precise position control. Position errors are calculated before and after a reversal in direction of movement of a slide 30, each from the difference between the position data of the slide 30 detected by a linear scale 25 and the position data of the slide 30 calculated from the rotational position data of the servo motor 23 detected by a rotary encoder 24. The backlash amount of the slide 30 is calculated from the difference between the position error before the reversal and the position error after the reversal thus calculated. Thereafter, when reversing the direction of movement of the slide 30, the feed speed during direction reversal is increased in accordance with the backlash amount.Type: GrantFiled: August 7, 2002Date of Patent: July 6, 2004Assignees: Mori Seiki Co., Ltd., Intelligent Manufacturing Systems InternationalInventor: Makoto Fujishima
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Patent number: 6759826Abstract: A switched reluctance drive is supplied from a power source and has a DC link, across which is a DC link capacitor. The phases of the machine are controlled by a controller which controls the switches connecting each phase winding to the DC link. The controller switches off the switches of each phase in a sequence which minimizes the peak voltage appearing on the DC link capacitor, thereby allowing a reduction in the voltage rating of the capacitor.Type: GrantFiled: June 5, 2002Date of Patent: July 6, 2004Assignee: Switched Reluctance Drives LimitedInventor: Michael Paul Tankard
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Patent number: 6759827Abstract: To provide a control circuit or the like of a brush-less motor capable of properly controlling current of motor windings by detecting positions of magnetic poles of a rotor at a rotational frequency of the rotor from low rotation which cannot lock a PLL circuit to steady-state rotation for rotating at high speed. Positions of magnetic poles are detected by a change in a magnetic flux (magnetic flux signal) of motor windings caused by rotating a rotor having the magnetic poles, thereby, a synchronizing signal (ROT signal) in synchronism with rotation of the rotor is generated.Type: GrantFiled: September 18, 2001Date of Patent: July 6, 2004Assignee: BOC Edwards Japan LimitedInventor: Toshiaki Kawashima
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Patent number: 6759828Abstract: This invention relates to a remote lock operation apparatus for a light vehicle having a bar handle and a switch case and having no cabin. One objective of the invention is to make it possible for the infrared receiver of the remote lock operation apparatus to cover a range of directivity without being influenced by the seat or the vehicle body rear portion. Another objective is to protect the infrared receiver from the weather and mischief. These objectives are achieved by having an infrared receiver provided on a switch case, with a switch operation element provided on a steering bar handle of a vehicle, thereby protecting the infrared receiver from potential damage while at the same time positioning it so that it can be easily operable by a passenger.Type: GrantFiled: February 19, 2002Date of Patent: July 6, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventor: Takeshi Konno
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Patent number: 6759829Abstract: A charging circuit (28) particularly suited for use in a satellite (20) has a battery cell (32). A voltage sensor (36) is coupled to the battery for generating a cell voltage signal. A current sensor (34) is coupled to the battery cell (32) and generates a cell charge current signal. A controller (38) is coupled to the voltage sensor (36) and the current sensor (34). The controller (38) determines a compensated voltage in response to the cell voltage signal and the charge current signal and controls the charging of the battery cell (32) in response to the compensated voltage.Type: GrantFiled: September 13, 2002Date of Patent: July 6, 2004Assignee: The Boeing CompanyInventor: Craig H. Becker-Irvin
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Patent number: 6759830Abstract: The invention provides a method of precisely estimating the effective full-discharge capacity of a secondary battery. That effective full-discharge capacity degrades as the secondary battery is repeatedly charged and discharged.Type: GrantFiled: October 11, 2002Date of Patent: July 6, 2004Assignee: Samsung SDI Co., Ltd.Inventor: Chang-hyun Yoo
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Patent number: 6759831Abstract: A power supply disabler that can be retrofitted to a battery-operated device includes a resettable timer, a switch and a pair of electrodes, all of which are fitted in a thin profile case. The case is configures to fit between a pair of series-connected batteries while the batteries are installed in the battery-operated device. When the battery-operated device is turned on, the switch is closed and the timer is reset and started so that power saving device provides a conductive path between the batteries. After a predetermined time period, the timer causes the switch to open-circuit the conductive path, thereby disabling the power supply. Thus, the power supply is prevented from supplying power to the battery-operated device. The timer is reset when the battery-operated device is subsequently turned on for the next use.Type: GrantFiled: June 8, 2000Date of Patent: July 6, 2004Inventor: John T. Eldridge
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Patent number: 6759832Abstract: In a battery control device for controlling input to and output from a battery pack of the present invention, the battery pack includes a plurality of serially-connected battery blocks each including a plurality of serially-connected unit batteries. The device includes: an internal resistance measurement section for each battery block; and a first malfunctioning battery detection section for detecting the unit battery as a leakage malfunctioning battery based on an internal resistance variation measured for each battery block during a prescribed time interval of a charging operation, wherein detection information about the leakage malfunctioning battery is reflected in the control of charging and discharging operations.Type: GrantFiled: June 12, 2003Date of Patent: July 6, 2004Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Keiichi Minamiura, Toshiaki Nakanishi
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Patent number: 6759833Abstract: A charger is provided for charging a battery from a source and capable of detecting and switching polarity. The charger includes a first detection block for connection with the source, a second detection block for connection with the source, a first switch connected with the first detection block, a second switch connected with the second detection block and a switch actuation block connected with the switches and for connection with the battery. The switch actuation block includes a first relay and a second relay. The first relay is turned on for sending power from the source to the battery when circuit flows through the first detection block and the first switch. The second relay is turned on for sending power from the source to the battery when circuit flows through the second detection block and the second switch.Type: GrantFiled: May 6, 2003Date of Patent: July 6, 2004Inventor: Kuo-Hua Chen
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Patent number: 6759834Abstract: A phase-shift modulation resonant inverter is turned on and off by built-in switches Q1 and Q2. An inductor L and a load capacitor C are used to produce vibration output from the inverter. A current sampling circuit is employed to take samples of resonant current. A controller is used to adjust the shift angle between the phase of switches Q1 and Q2 and that of resonance current. This invention features simple structure, flexible control and a wide range of voltage changes, with an efficiency up to 98%.Type: GrantFiled: September 5, 2002Date of Patent: July 6, 2004Inventor: Funing Wu
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Patent number: 6759835Abstract: A switching circuit controls at least one semiconductor switch TR1 using drive signals generated from logic circuitry 4 that generates complementary drive signals on an upper and lower drive path. Validation circuitry is provided between the logic circuitry and the semiconductor switch that inhibits any uncontrolled switching of the semiconductor switch TR1 due to noise, such as lightning strike, appearing at the load.Type: GrantFiled: December 19, 2002Date of Patent: July 6, 2004Assignee: Goodrich Control Systems, Ltd.Inventors: Simon Turvey, Adrian Shipley
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Patent number: 6759836Abstract: A first capacitive circuit is coupled to an output of a low drop-out (LDO) regulator. A second capacitive circuit is selectively coupled to a power supply signal circuit and arranged to store charge when the LDO regulator is deactivated. When the LDO regulator is activated, a portion of the charge on the second capacitive circuit is transferred to the first capacitive circuit. The LDO regulator provides an output when the charge associated with the first capacitive circuit reaches a predetermined level. The power-on time of the LDO regulator depends on the time required to increase the charges of the first capacitance circuit to the predetermined level from a level associated with the transferred charge from the second capacitive circuit. Also, the presence of the first capacitive circuit prevents noise associated with the power supply from being reflected at the output of the LDO regulator.Type: GrantFiled: October 1, 2002Date of Patent: July 6, 2004Assignee: National Semiconductor CorporationInventor: Robert G. Black, Jr.
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Patent number: 6759837Abstract: An electronic meter includes a sensing circuit for sensing voltage and current values of a waveform, an analog-to-digital converter for converting the sensed voltage and current values to digital voltage and current values, a digital filter for delaying one or both of the digital voltage and current values to compensate for a phase shift error in the sensing circuit, and a computation circuit for computing one or more parameters of the waveform in response to the phase compensated voltage and current values. The electronic meter may be calibrated by applying to the meter a test waveform having a known phase shift, measuring the phase shift using the electronic meter, determining a phase shift error based on the difference between the known phase shift and the measured phase shift and determining digital filter coefficients to produce a digital filter delay that corresponds to the phase shift error.Type: GrantFiled: August 28, 2001Date of Patent: July 6, 2004Assignee: Analog Devices, Inc.Inventor: Guljeet S. Gandhi
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Patent number: 6759838Abstract: A phase-locked loop with dual-mode phase/frequency detection is provided. The phase-locked loop circuit includes a dual-mode phase/frequency detector, a loop filter, a voltage-controlled oscillator, and a frequency converter. In addition, the dual-mode phase/frequency detector includes a digital phase/frequency detector, an analog phase/frequency detector, a charge pump, and a control unit. When the phase-locked loop circuit starts, the control unit causes a detection output signal from the dual-mode phase/frequency detector to correspond to a digital signal from the digital phase/frequency detector. When the phase-locked loop circuit approaches a lock state, the control unit causes the detection output signal to correspond to an analog signal from the analog phase/frequency detector. The phase-locked loop with dual-mode phase/frequency detection has the advantages of providing linear characteristics, fast switching speed, and high sensitivity.Type: GrantFiled: March 28, 2002Date of Patent: July 6, 2004Assignee: Mediatek Inc.Inventors: Kuang-Chung Tao, Chi-Ming Hsiao, Chang-Fu Kuo
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Patent number: 6759839Abstract: A wide-band RF signal power detecting element includes, on an insulating substrate (21), at least one thin-film resistor (22a) for absorbing the power of a signal to be measured and generating heat, first and second ground electrodes (27, 28) formed by thin-film conductors, a first thin-film connecting portion (24) for electrically connecting the first ground electrode (27) to the thin-film resistor (22a), a second thin-film connecting portion (25) for electrically connecting the second ground electrode (28) to the thin-film resistor (22a) and narrowing the gap between the first and second thin-film connecting portions (24, 25) toward the thin-film resistor (22a), and an input electrode (26) formed between the first and second ground electrodes (27, 28) and electrically connected to the thin-film resistor (22a).Type: GrantFiled: December 6, 2002Date of Patent: July 6, 2004Assignee: Anritsu CorporationInventor: Setsuo Kodato
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Patent number: 6759840Abstract: A method and apparatus for configuring a current carrying and current sensing configuration using a rigid magnetically permeable guide core extending between facing first and second guide ends, the first and second ends of the core defining a sensing gap having a sensing dimension therebetween, an internal surface of the core forming a core space, the method including sliding a segment of a conductor through the sensing gap and into the core space such that the conductor extends through the core space, attaching a flux sensor to a clip member and mounting the clip member within the sensing space such that the sensor is within the sensing space.Type: GrantFiled: June 11, 2002Date of Patent: July 6, 2004Assignee: Rockwell Automation Technologies, Inc.Inventors: Richard Marasch, Jeff Annis, Bob Rushmer
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Patent number: 6759841Abstract: A current detector comprising a Hall generator assembly and a current-path conductor assembly. The Hall generator assembly includes a Hall generator in the form of a semiconductor chip mounted to a metal-made mounting plate via a sheet of magnetic material such as Permalloy. A plastic encapsulation envelops at least parts of all the components of the Hall generator assembly. The current-path conductor assembly includes a sheet-metal current-path conductor and a plastic holder molded in one piece therewith. The Hall generator assembly and the current-path conductor assembly are combined by bonding together the encapsulation of the Hall generator assembly and the conductor holder of the current-path conductor assembly into a unitary casing for the current detector. A covering of Permalloy or the like envelopes the casing.Type: GrantFiled: June 14, 2002Date of Patent: July 6, 2004Assignee: Sanken Electric Co., Ltd.Inventors: Hirokazu Goto, Koji Ohtsuka, Takashi Kato, Hiromichi Kumakura
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Patent number: 6759842Abstract: A removable interface adapter includes a frame, a first set of contacts configured for connection to a first set of test head contacts in a test system, and a second set of contacts configured for connection to a test board having at least one device to be tested. The first and second adapter contacts are interconnected so that electronic devices placed in the test board can be tested by the test system. With this adapter, test boards made for one test system can be used on other test systems.Type: GrantFiled: April 17, 2002Date of Patent: July 6, 2004Assignee: Eagle Test Systems, Inc.Inventor: Jack Edward Weimer
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Patent number: 6759843Abstract: Magnetic sensing methods and systems are disclosed. A minimum magnetic signal output and a maximum magnetic signal output can be detected utilizing a sensor comprising a peak detector circuit associated with a filter averaging circuit and one or more magnetic elements (e.g., a Hall element and/or magnetoresistive bridge). An average magnetic signal output can then be determined utilizing the filter averaging circuit when a target begins to rotate in front of the sensor.Type: GrantFiled: November 15, 2002Date of Patent: July 6, 2004Assignee: Honeywell International Inc.Inventor: Gregory R. Furlong
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Patent number: 6759844Abstract: A Hall sensor component includes an assembly unit with a Hall sensor and a processing device. The Hall sensor has an electric current input for providing a Hall sensor output signal depending on a magnetic field acting on the Hall sensor and depending on the electric current. The processing device is arranged for receiving an input signal including the Hall sensor output signal and processing the input signal to provide an output signal associated with the Hall sensor output signal. A signal generator generates a diagnosis signal. The signal generator sends the diagnosis signal to the assembly unit as one of a control signal of the electric current input, to form a Hall sensor mixed output signal dependant on said diagnosis signal, and as a mixing signal to mix with said Hall sensor output signal to form a Hall sensor mixed output signal dependant on said diagnosis signal. The Hall sensor mixed output signal is provided as the processing device input signal.Type: GrantFiled: May 23, 2002Date of Patent: July 6, 2004Assignee: ZF Lemförder Metallwaren AGInventor: Wolfgang Kliemannel
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Patent number: 6759845Abstract: A weak-magnetic field sensor using printed circuit board manufacturing technique and a method of manufacturing the same which detects the Earth's magnetic field to obtain positional information is disclosed. The sensor comprises a first base board which is formed at its upper and lower surfaces with first driving patterns such that the upper and lower first driving patterns are electrically connected to each other, a pair of first stacked boards which are stacked on upper and lower surfaces of the first base board and which are formed with magnetic layers to be parallel to each other and patterned in a certain shape, and a pair of second stacked boards which are stacked on outer surfaces of the pair of first stacked boards and which are formed with second driving patterns electrically connected to the first driving patterns of the first base board to surround magnetic layers and formed with pickup patterns to surround the first and second driving patterns.Type: GrantFiled: May 8, 2002Date of Patent: July 6, 2004Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Myung-Sam Kang, Kyoung-Won Na, Sang-On Choi, Won-Youl Choi, Jeong-Hwan Lee, Keon-Yang Park
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Patent number: 6759846Abstract: The invention relates to an MR coil module for use in an MR imaging system for receiving and/or transmitting RF signals.Type: GrantFiled: September 13, 2002Date of Patent: July 6, 2004Assignee: Koninklijke Philips Electronics N.V.Inventors: Marinus Johannes Adrianus Maria Van Helvoort, Johan Samuel Van Den Brink, Diana Maria Francisca Geraats, Paulus Cornelius Hendrikus Adrianus Haans, Cornelis Leonardus Gerardus Ham
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Patent number: 6759847Abstract: In a method for magnetic resonance imaging with adherence to SAR limit values, a patient is charged with a radio-frequency pulse sequence via at least one transmission antenna for the implementation of a measurement in a magnetic resonance tomography apparatus, and the magnetic resonance signals that are produced are acquired in a spatially resolved manner via at least one reception antenna and are further-processed for producing magnetic resonance images or spectra. SAR values are determined before the implementation of the measurement on the basis of patient data and the position of the patient relative to the transmission antenna for planned parameters of the measurement, and the parameters are modified as needed until the SAR values lie within the SAR limit values. The position of the patient relative to the transmission antenna is exactly determined by an imaging magnetic resonance pre-measurement.Type: GrantFiled: October 11, 2002Date of Patent: July 6, 2004Assignee: Siemens AkiengesellschaftInventors: Gerhard Brinker, Wolfgang Renz
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Patent number: 6759848Abstract: In a method and magnetic resonance tomography apparatus for spatially resolved presentation of a change of functional activities in the brain of a living subject by means of magnetic resonance, temporally successive magnetic resonance images of the brain of the subject stimulated with a stimulus are produced upon variation of at least one of the excitation angle and the echo time, a noise part for each pixel is calculated referenced to identical pixels of the temporally successive images, the noise part of each pixel is resolved into a first noise component independent of the excitation angle and a second noise component dependent on the excitation angle, the second noise component of the noise part of each pixel is resolved into a third noise component independent of the echo time and a fourth noise component dependent on the echo time, and the fourth noise component of the noise part of each pixel obtained in this way is employed for detecting neural activity changes in the brain of the living subject underType: GrantFiled: May 2, 2003Date of Patent: July 6, 2004Assignee: Siemens AktiengesellschaftInventor: Gunnar Krüger
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Patent number: 6759849Abstract: An electronic battery tester is provided for testing storage batteries. Battery test circuitry is configured to couple to the storage battery and measure a condition of the battery. A removable module is configured to couple to the battery tester to add increased functionality.Type: GrantFiled: October 25, 2002Date of Patent: July 6, 2004Inventors: Kevin I. Bertness, Stephen J. McShane
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Patent number: 6759850Abstract: A system and method for electrically testing electrical circuits in which electromagnetic values that are to be sensed by an array of sensors are forecast or simulated, for use as a reference, by calculation using computer files corresponding to a board under test and to an array of sensors.Type: GrantFiled: March 27, 2002Date of Patent: July 6, 2004Assignee: Orbotech Ltd.Inventors: Benyamin Harzanu, Boris Roikhel, On Haran
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Patent number: 6759851Abstract: The present invention provides an improvement over conventional electric circuit monitoring devices in that it provides a device and method to passively monitor the performance of an electrical circuit to a load device, including faults that occur intermittently. The invention is capable of identifying the location and type of malfunction in the event of a fault.Type: GrantFiled: July 2, 2002Date of Patent: July 6, 2004Assignee: Delphi Technologies, Inc.Inventor: Lawrence Dean Hazelton
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Patent number: 6759852Abstract: A VDD power-up detection circuit is provided having a p-channel transistor having a source coupled to a VDD voltage supply terminal and a gate coupled to a ground supply terminal. A first resistor or a diode element is coupled between the drain of the p-channel transistor and the ground supply terminal. An n-channel transistor has a source coupled to the ground supply terminal and a gate coupled to the drain of the p-channel transistor. A second resistor is coupled between a drain of the n-channel transistor and the VDD voltage supply terminal. A trigger circuit is coupled to the drain of the n-channel transistor. As the VDD supply voltage increases during power-up, the p-channel and n-channel transistors are both turned on. At this time, the trigger circuit asserts a control signal that enables an associated circuit to operate in response to the VDD supply voltage.Type: GrantFiled: September 24, 2002Date of Patent: July 6, 2004Assignee: Xilinx, Inc.Inventor: Maheen A. Samad