39th week of 2008 patent applcation highlights part 18 |
Patent application number | Title | Published |
20080231176 | LIGHT EMITTING DEVICE - A light emitting device is disclosed. The light emitting device includes a first substrate, a light emitting unit that is positioned on the first substrate and includes a first electrode, a light emitting layer, and a second electrode, and an organic phosphor layer positioned at a location corresponding to the light emitting layer. | 2008-09-25 |
20080231177 | Light-Emitting Device and Electronic Device - The present invention provides light-emitting devices having excellent characteristics and electronic devices having excellent characteristics, having such light-emitting devices. Specifically, the present invention provides a light-emitting device includes a first light-emitting element, a second light-emitting element, and a third light-emitting element which emit light having different color from each other. The first light-emitting element includes a first anode; a first cathode; and a first light-emitting layer and a second light-emitting layer between the first anode and the first cathode, wherein the first light-emitting layer includes a first high light-emitting substance and a first organic compound, and the second light-emitting layer includes the first high light-emitting substance and a second organic compound, wherein the first light-emitting layer is in contact with the first anode side of the second light-emitting layer, and wherein the first organic compound is an organic compound having a hole-transporting property and the second organic compound is an organic compound having an electron-transporting property. The second light-emitting element includes a second anode; a second cathode; and a third light-emitting layer and a layer for controlling carrier transfer between the second anode and the second cathode, wherein the third light-emitting layer includes a second high light-transmitting substance, wherein the layer for controlling carrier transfer includes a third organic compound and a fourth organic compound, and is provided between the third light-emitting layer and the second cathode, wherein the third organic compound is an organic compound having an electron-transporting property and the fourth organic compound is an organic compound having an electron-trapping property; and wherein the third organic compound is included more than the fourth organic compound in the layer for controlling carrier transfer. The third light-emitting element includes a third anode; a third cathode; and a fourth light-emitting layer, wherein the fourth light-emitting layer includes a fifth organic compound, a sixth organic compound, and a third high light-emitting substance, wherein the fifth organic compound is an organic compound having a hole-transporting property, and the sixth organic compound is an organic compound having an electron-transporting property, and wherein the third high light-emitting substance is a substance which emits phosphorescence. | 2008-09-25 |
20080231178 | Organic light emitting diode display - An organic light emitting diode (OLED) may include a first electrode, a hole injection layer on the first electrode, an emission layer on the hole injection layer, an electron injection layer on the emission layer, and a second electrode on the electron injection layer, wherein an absolute value of a difference between a work function of the first electrode and a work function of the second electrode is less than 0.5 eV, and at least one of the hole injection layer and the electron injection layer is a multilayer. | 2008-09-25 |
20080231179 | Organic Electroluminescence Element and Display Using the Same - One embodiment of the present invention is an organic electroluminescence element, including: an anode; a cathode; an organic light emitting medium layer including a buffer layer and an organic light emitting layer, the organic light emitting medium layer being between the anode and the cathode, and the buffer layer comprising at least two kinds of inorganic material. | 2008-09-25 |
20080231180 | Light-Emitting Device With a Sealing Integrated Driver Circuit - The invention relates to light-emitting diodes (O-LED). In particular, it relates to the driver electronics needed for these devices. An organic electroluminescent device is provided, which has a hermetically closed very flat housing. To improve the functionality of an O-LED, considerably reduce the height of an O-LED module and allow a cost-effective mass production, the driver circuit and the electronic driver elements or the printed circuit board (PCH) with the electronic driver elements are incorporated into the cover plate of the device. | 2008-09-25 |
20080231181 | Phosphor Converted LED with Improved Uniformity and Having Lower Phosphor Requirements - A light source having a first die with an LED thereon, a substrate, a base layer and a first phosphor layer is disclosed. The first die is characterized by a top surface, a bottom surface and a light generation region at a height above the bottom surface. The substrate includes a depression in which the first die is mounted. The base layer fills the depression in the substrate to a height greater than half the distance from the bottom surface of the first die to the top surface of the first die and less than the light generation height of the first die. The first phosphor layer includes a first light converting material that converts light emitted by the first die to light of a different wavelength. The first phosphor layer is in direct contact with the base layer and covers the first die. | 2008-09-25 |
20080231182 | ELECTROLUMINESCENT DEVICE AND ELECTRONIC APPARATUS - An electroluminescent device includes a first substrate being provided with a plurality of luminescent elements, a second substrate facing the first substrate with the plurality of luminescent elements therebetween, a desiccating agent covering the face of the first substrate at the side facing the second substrate or of the second substrate at the side facing the first substrate, and a liquid-repellent portion surrounding the desiccating agent and being repellent to a coating liquid for forming the desiccating agent. | 2008-09-25 |
20080231183 | Apparatus and method for evacuating a field emission display - A vacuum container comprising: a first and second substrate of relatively the same dimensions and areas, a peripheral seal positioned about the outer periphery of each substrate for bonding the first substrate to the second substrate to form a composite stacked member; and a getter box having a vacuum aperture in one side with an evacuation tube of a given diameter opening to enclose the vacuum aperture, the tube joined to the box about the opening and having a sealed end remote from the box, the getter box having a getter source in the box hollow to absorb any residual gasses in the display hollow after the display hollow has been evacuated to a desired vacuum before sealing the end of the evacuation tube, wherein the area of the aperture is equal to or greater than π(D/2) | 2008-09-25 |
20080231184 | Higher efficiency incandescent lighting using photon recycling - A metallic photonic crystal (MPC) structure used as a filter with incandescent lighting is presented that significantly improves efficiency, while retaining the desirable color rendering index of incandescent lighting. The resulting efficiency is higher than many existing lighting types. The MPC filter is implemented with only a single layer of square lattice or two layers of woodpile-like lattice has high reflection from the photonic band edge to infinitely long wavelength. The MPC filter can be used in a spherical, cylindrical or flat form depending on the illumination scheme. | 2008-09-25 |
20080231185 | ELECTRODE SHEET FOR PLASMA DISPLAY PANEL AND PLASMA DISPLAY PANEL USING THE SAME - An electrode sheet for a plasma display panel including a conductive discharge unit and a dielectric layer, the conductive discharge unit being covered (or encapsulated or buried) by the dielectric layer, and a plasma display panel using the same. The electrode sheet according to an embodiment of the present invention may be economically and easily manufactured using a metal anodizing process. | 2008-09-25 |
20080231186 | PLASMA DISPLAY PANEL, METHOD FOR MANUFACTURING THE SAME, AND RELATED TECHNOLOGIES - A plasma display panel is disclosed. A method for manufacturing the plasma display panel includes: forming address electrodes and a first dielectric layer on a first substrate; forming barrier ribs by stacking a photosensitive barrier rib material, containing a hybrid binder, on the first substrate, and processing the stacked photosensitive barrier rib material; coating phosphor layers in respective cells defined by the barrier ribs; sequentially forming a plurality of transparent electrodes and bus electrodes, a second dielectric layer, and a protective layer on a second substrate; and bonding the first substrate and the second substrate with each other. | 2008-09-25 |
20080231187 | Plasma display panel and method of manufacturing the same - A plasma display panel including: a first substrate; a second substrate separated from the first substrate; and two or more electrode sheets facing each other and between the first and second substrates, each of the two or more electrode sheets including opening patterns to form discharge spaces, wherein each of the two or more electrode sheets includes: a plurality of discharge electrodes extending in a direction and surrounding at least a part of the discharge spaces, and having corners with round curved portions contacting the discharge spaces or adjacent to the discharge spaces; and an insulating member integrally formed between the discharge electrodes for supporting the discharge electrodes and for insulating the discharge electrodes from each other, and including an oxide of a metal used to form the discharge electrodes. | 2008-09-25 |
20080231188 | PLASMA DISPLAY PANEL AND METHOD FOR MANUFACTURING THE SAME - A plasma display panel includes a first electrode sheet and a second electrode sheet. Each sheet includes inside lines extending in one direction, each inside line having a discharge electrode forming a closed curve discharge unit and being separated from and electrically connected to an adjacent closed curve discharge unit by a first connection unit. The discharge electrode is of a material subject to an anodization such that anodization forms a dielectric layer having an anodization thickness to an outside of the closed curve discharge unit larger than an anodization thickness to an inside of the closed curve discharge unit, the inside of the closed curve discharge unit forming a sheet discharge hole. | 2008-09-25 |
20080231189 | PLASMA DISPLAY DEVICE - A plasma display device includes: a plasma display panel including an address electrode disposed on a first substrate, a pair of first and second display electrodes disposed on a second substrate and crossing the address electrode, a dielectric layer covering the first and second display electrodes on the second substrate, an MgO protective layer covering the dielectric layer on the second substrate, and discharge gases filled between the first and second substrates; a driver that drives the plasma display panel; and a controller that controls a sustain pulse width of a sustain period to be 1 to 3.5 μs. The MgO protective layer includes 100 to 300 ppm of Ca, 100 to 250 ppm of Al, 10 to 50 ppm of Fe, and 70 to 170 ppm of Si based on MgO. The plasma display device shows improved discharge stability and display quality due to reduced discharge delay time (Ts). | 2008-09-25 |
20080231190 | PLASMA DISPLAY DEVICE, AND METHOD FOR MANUFACTURING THE SAME - The present invention relates to a plasma display device including a plasma display panel comprising an address electrode disposed on a first substrate, a pair of first and second display electrodes disposed on the second substrate and crossing address electrode, a dielectric layer covering the first and second display electrodes on the second substrate, an MgO protective layer covering the dielectric layer on the second substrate, discharge gases filled between the first and second substrates, a driver for driving the plasma display panel, and a controller for controlling the driver so that a sustain pulse width of a sustain period may be 1 to 3.5 μs. The MgO protective layer comprises MgO that has a grain size of 100 to 300 nm. The high-definition plasma display device according to one embodiment of the present invention has improved response speed and discharge stability by adjusting the statistical delay time. | 2008-09-25 |
20080231191 | Electrode For a High Intensity Discharge Lamp - The invention relates to an electrode for a high intensity discharge lamp, at least consisting of an electrode head ( | 2008-09-25 |
20080231192 | ELECTRON BEAM DRAWING APPARATUS - An electron beam drawing apparatus, comprises an electrostatic deflector which deflects the electron beam by an electric field, a coaxial cable which is connected to deflecting electrodes, and a resistive element which is connected between a central conductor and an outer conductor or the external cylinder. The electrostatic deflector includes the external cylinder provided more downstream than the electron source and kept at the ground potential and a plurality of deflecting electrodes which are provided in the external cylinder. The coaxial cable includes the central conductor and the tubular outer conductor, one end of the central conductor passing through the external cylinder and being connected to the deflecting electrodes and one end of the outer conductor being connected to the external cylinder. The resistive element is set to a resistance for obtaining impedance matching with the coaxial cable. | 2008-09-25 |
20080231193 | AUTOMOBILE ROOM LAMP SYSTEM - An automobile room lamp system is provided, which comprises a first circuit having a power source with positive and negative poles, a light emitting diode, a miniature incandescent bulb and a push switch, said light emitting diode, said miniature incandescent bulb and said push switch being connected in series between said positive pole and said negative pole; and a second circuit branching off from said first circuit between said light emitting diode and said miniature incandescent bulb and having a resistor provided on a negative pole side of said poser source, said resistor having a resistance value set at a level to allow said light emitting diode and said miniature incandescent bulb to be lighted with a high intensity when said push switch is closed and to allow said light emitting diode alone to issue dim light when said push switch is opened. | 2008-09-25 |
20080231194 | DISCHARGE BULB FOR VEHICLE - A discharge bulb and an arc tube are provided. The discharge bulb includes an arc tube main body having a discharge arc chamber, in which two discharge electrodes are disposed to oppose to each other; a tube portion disposed at each end portion of the arc tube main body, each of the tube portions being in communication with the discharge arc chamber and holding one of the discharge electrodes, wherein a wall for forming the discharge arc chamber has a taper portion whose diameter is reduced gradually from a cylinder portion of the arc tube main body in a center area to the tube portion of the arc tube main body, and an inner diameter Di of the cylinder portion is about 1.0 mm to about 2.5 mm, and a projection length Le of the discharge electrode into the discharge arc chamber is about 1.5 mm to about 2.5 mm. | 2008-09-25 |
20080231195 | Headlight control device - In a vehicle headlight apparatus, a projection unit having a same structure of an LED projector receives a light provided from a lamp. The projection unit generates and projects a projection image toward a vehicle front-area. A vehicle ECU has an image signal obtaining means for obtaining image signals representing a vehicle front-area image, a high brightness area determination means for analyzing the image signals in order to successively determine a high brightness area in the image signals, and a projection image determination means for determining a projection image so that the light, corresponding to the high brightness area and to be irradiated toward the vehicle front-area, becomes weak when compared with the light previously determined. Thereby, an intensity of the light to be irradiated to an object with a high reflection factor can be decreased. This can suppress decreasing of driver's frontal visibility. | 2008-09-25 |
20080231196 | Light source of side-edge type LED backlight unit - A light source of side-edge type light-emitting diode (LED) backlight unit for using in a liquid crystal display (LCD) comprises a substantial LED bar, at least one primary LED set preset as the light source of the LCD, and at least one backup LED set. The primary LED set(s) and backup LED set(s) are composed of a plurality of LED and disposed at the LED bar, and a backup LED set will be enlightened and substituted for one primary LED set as the light source when the primary LED set is broken-down so that the light source for the LCD is maintained at constant levels. | 2008-09-25 |
20080231197 | POWER SUPPLY UNIT, HIGH-FREQUENCY CIRCUIT SYSTEM AND HEATER VOLTAGE CONTROL METHOD - At the time of restoration of the power supply after a power failure, a voltage higher than that in the normal operation mode is supplied to a heater. After a lapse of a predetermined time, the voltage to be supplied to the heater is switched into the voltage in the normal operation mode while a control signal for stating the operation of an electron tube is output. Alternatively, at the time of power activation, the rate of change of current flowing through a heater is determined for every period of time. When the rate of change becomes equal to or lower than a predetermined threshold, a voltage higher than that in the normal operation mode is supplied to the heater, and after a lapse of a predetermined time, the voltage to be supplied to the heater is switched into the voltage in the normal operation mode while a control signal for stating the operation of the electron tube is output. | 2008-09-25 |
20080231198 | Circuit for driving and monitoring an LED - Described herein is technology for, among other things, a circuit for controlling a current through an LED. The novel circuit includes a regulator for providing the current to the LED, an LED voltage monitoring circuit for monitoring a voltage drop across the LED and for providing a voltage reading signal based on the voltage drop. The novel circuit further includes a data converter logic circuit coupled with the regulator and the LED voltage monitoring circuit. The data converter logic circuit is operable to control the regulator to adjust the current based on the signal. | 2008-09-25 |
20080231199 | Driving method for organic electroluminescence light emitting section - A driving method for an organic electroluminescence light emitting section of an organic EL display apparatus which includes a scanning circuit, an image signal outputting circuit, totaling N×M organic electroluminescence elements, M scanning lines, N data lines, and a current supplying section. The driving method, includes the steps of: carrying out a preprocess; carrying out a threshold voltage cancellation process; carrying out a wiring process; and supplying current to the organic electroluminescence light emitting section to drive the organic electroluminescence light emitting section. | 2008-09-25 |
20080231200 | Driving method for organic electroluminescence light emitting section - A driving method for an organic electroluminescence light emitting section using a driving circuit, the driving circuit includes a driving transistor, an image signal writing transistor, a light emission control transistor, and a capacitor section. The driving method includes the steps of: carrying out a preprocess of applying a first node initialization voltage and applying a second node initialization voltage; carrying out a threshold voltage cancellation process; placing the light emission control transistor into an on state, a writing process of applying an image signal; and placing the image signal writing transistor into an off state so that current is supplied to the organic electroluminescence light emitting section to drive the organic electroluminescence light emitting section. | 2008-09-25 |
20080231201 | LED LIGHTING FIXTURE - A light-emitting diode (LED) lighting fixture is provided as a potential solid state lighting (SSL) replacement fixture for a conventional HID lamp fixture. The LED lighting fixture includes a main housing having a bottom surface supporting an array of LEDs, a top surface and sides, and at least one driver provided in a side housing attached to a side of the main housing to drive the LED array. The thickness of the side housing is equal to or greater than the thickness of the main housing. A plurality of heat spreading fins is arranged on the top surface of the main housing. | 2008-09-25 |
20080231202 | LED Light String with Half-wave Rectifying and Filtering Device - The invention relates to a decorative light and more particularly, relates to an LED light string with a half-wave rectifying and filtering device. The light string includes a plug, a power line and an LED light string having a plurality of LED lamps, these LED lamps sharing the same polarization direction. The LED light string further includes a half-wave rectifying and filtering device disposed between pins of the plug and the LED light string. The light string of the invention benefits from low cost, reduced volume of itself, convenience, and a longer life span. In addition, it can be used needless of a special controller and without generating twinkling. | 2008-09-25 |
20080231203 | Lighting System and Method for Controlling a Plurality of Light Sources - A lighting system, a lighting unit and a method for controlling a plurality of light sources are described. A lighting system comprises an intelligent electrical current supply | 2008-09-25 |
20080231204 | Light emitting diode assembly replacement for fluorescent lamp - A method and apparatus for replacing a fluorescent lighting system with a light emitting diode (LED) system. By connecting the LEDs in accordance with the described embodiment, the fluorescent lamp driving circuit can be reused without modification. The current rating of the LEDs must be equal to or less than the current output of the fluorescent lamp driving circuit. The LED replacement lamp may consist of as few as two LEDs but multiple LEDs may be used as long as the power consumed by the LEDs does not exceed the power rating of the fluorescent lamp driving circuit. | 2008-09-25 |
20080231205 | CURRENT MODE RESONANT INVERTER - The present invention provides a low-cost inverter for ballast. A current transformer is connected in series with a lamp to operate the lamp. A first transistor and a second transistor are coupled to switch the resonant circuit. The current transformer is utilized to generating control signals in response to the switching current of the resonant circuit. The transistor is turned on once the control signal is higher than a first threshold. After that, the transistor is turned off once the control signal is lower than a second threshold. Therefore, a soft switching operation for the first transistor and the second transistor can be achieved. | 2008-09-25 |
20080231206 | Method and Ballast for Driving a High-Pressure Gas Discharge Lamp - Method of driving a high-pressure gas discharge lamp during its steady-state operation, wherein a steady-state current signal is sent through the lamp for maintaining a discharge arc in the lamp, comprising the step of comparing the lamp conductivity response to a current step in said current signal with reference parameters; and in response to said comparison at least one of the following steps: stopping the current supply to the lamp, generating a signal indicating the end-of-life status of the lamp, changing the steady-state current through the lamp, changing the steady-state waveform of the current signal through the lamp, and generating a signal indicating the lamp type, wherein said current step is obtained by sending a current pulse which is superimposed on said steady-state current signal through the lamp. | 2008-09-25 |
20080231207 | DISCHARGE LAMP LIGHTING APPARATUS AND SEMICONDUCTOR INTEGRATED CIRCUIT - A discharge lamp lighting apparatus includes switching elements to pass a current to a primary winding of a transformer and a capacitor, an oscillator to generate a triangular signal, an error amplifier to amplify an error voltage of a voltage corresponding to a current passed through a discharge lamp and receive a burst dimming signal that is a pulse signal to intermittently supply power to the discharge lamp, comparators to compare the error voltage with the triangular signal and generate PWM control signals that turn on/off the switching elements, respectively, a clamp circuit to clamp an output from the error amplifier so that the output from the error amplifier may not drop below a lower limit value of the triangular signal during an OFF period of the burst dimming signal, and breaking circuits to block the PWM control signals during the OFF period of the burst dimming signal. | 2008-09-25 |
20080231208 | DISCHARGE LAMP LIGHTING APPARATUS AND SEMICONDUCTOR INTEGRATED CIRCUIT - A discharge lamp lighting apparatus includes a triangular signal oscillator, a first control part to compare the triangular signal with an error voltage between a reference voltage and a voltage corresponding to a first current passed through a secondary winding of a transformer and generate a first PWM control signal for turning on/off switching elements Qp | 2008-09-25 |
20080231209 | POWER SUPPLY DEVICE, AND LED DEVICE AND ELECTRONIC DEVICE USING SAME - A power supply device includes a step-up circuit configured to supply a driving voltage to a load, a comparison circuit configured to compare an output voltage from the load with a reference voltage, and a control circuit configured to control the step-up circuit based on a comparison result generated by the comparison circuit. The step-up circuit includes multiple operation modes each outputting a given voltage not lower than a power source voltage. The control circuit controls the step-up circuit to operate in one of the multiple operation modes. The control circuit maintains a current operation mode of the step-up circuit until the output voltage from the load decrease to below the reference voltage and, when the output voltage from the load is less than the reference voltage, switches the operation mode to another operation mode to output a voltage higher than a voltage output in the current operation mode. | 2008-09-25 |
20080231210 | REMOTE-CONTROLLED DECORATION - A remote-controlled decoration includes a decorative main body and a remote controller. The decorative main body includes an internal chamber, and a base mounted to a lower open end of the chamber. The base is provided with a circuit board connected to a power source, at least one LED light, and a receiver. The remote controller includes a signal transmitter for remotely transmitting a control signal to the receiver on the decorative main body, so as to control the LED light to light or extinguish. | 2008-09-25 |
20080231211 | POWER SUPPLY - A power supply to provide electrical power to one or more loads. The power supply may include a resonant air core transformer to provide an adjustable and adaptable source of power to electronic devices. The power supply may include isolated primary-side circuitry and secondary-side circuitry. The primary-side circuitry may include control circuitry that, among other things, provides drive waveforms for the primary-side switching circuitry. In embodiments configured to produce AC output, the secondary-side circuitry may also include switching circuitry. The primary-side control circuitry may provide drive waveforms for the secondary-side switching circuitry. The secondary-side circuitry may include measurement circuitry that measures the current and/or voltage of the output and provides those measurements to the control circuitry through isolation circuitry. The control circuitry may adjust the drive waveforms for the primary-side and/or secondary-side switching circuitry as a function of the measured values. | 2008-09-25 |
20080231212 | Parallel lighting system for surface light source discharge lamps - Disclosed is a low-cost parallel lighting system for discharge lamps for a surface light source, which reduces nonuniform brightness and static noise, and fulfills a requirement that lamp currents of individual cold-cathode fluorescent lamps should be uniform and stabilized. In a surface light source system having multiple discharge lamps, there is a module which lights the discharge lamps in parallel and whose input terminal and electrodes on an opposite side to that side of the discharge lamps which is connected to the module are driven by voltage waveforms different in phase by 180 degrees from each other, wherein an input terminal of an opposite phase of the surface light source system is connected to an inverter circuit having outputs of opposite phases via a single shunt transformer in such a way as to cancel out magnetic fluxes generated by currents respectively flowing in windings of the shunt transformer, whereby the resonance frequency of the inverter circuit having outputs of opposite phases is matched to balance the outputs. | 2008-09-25 |
20080231213 | LED String Lights - The invention herein relates to a decorative light, and, more particularly, to a LED (light-emitting diode) string lights with a current-limiting device. The LED string lights comprises a plug, a plurality of leads and a plurality of LED bulbs. Said LED string lights further comprises a current-limiting device connecting to said LED bulbs in series. Said current-limiting device comprises a resistor and a shell encapsulating said resistor therein. Said shell is an assembled structure with two contact pieces fixed inside. Said resistor connects to said two contact pieces through two legs of said resistor respectively and said two contact pieces connect to leads respectively to form a circuit. The present invention provides a LED string lights with low manufacturing cost, simple manufacturing technics and great working reliability. | 2008-09-25 |
20080231214 | LIGHT EMITTING DEVICE HAVING VARIOUS COLOR TEMPERATURE - A light emitting device capable of emitting light having various color temperatures is disclosed. The light emitting device includes a first light emitting part emitting a daylight color having a color temperature of 6000 K or more, a second light emitting part emitting white light having a color temperature less than 6000 K, and a third light emitting part emitting light in a visible range of 580 nm or more. The second and third light emitting parts are operable independently of the first light emitting part, and realize a warm white color having a color temperature of 3000 K or less with the white light emitted from the second light emitting part and the light emitted from the third light emitting part. The light emitting device realizes white light of various spectra and color temperatures corresponding to desired mood and utility. The light emitting device is controlled to emit light having a suitable wavelength or a suitable color temperature depending on the circadian rhythm of human, thereby enabling improvement of the user's health. | 2008-09-25 |
20080231215 | Undulator - An undulator comprises a first magnetic circuit ( | 2008-09-25 |
20080231216 | Method for control of a reluctance motor - The invention relates to a method for control of a reluctance motor which has a rotor ( | 2008-09-25 |
20080231217 | Brushless Dc Motor Control Method and Brushless Dc Motor Controller - The present invention discloses a control technology for brushless DC motor, in which firstly it is to build or import a motor running parameters' database, then detect the signals always running and the signals closely relevant to the rotor's rotating state such as the voltage and the current, and process these signals and figure out the signals about the rotor's position. Wherein these detected signals should be filtered before being used, and the best filter is the low-pass filter to cut out the high frequency components, and the cut-off frequency of the low-pass filter are determined by the motor running voltage U and PWM signal width when the motor is running at no load, finally determine if the motor is working properly by means of the motor running parameters stored in the database in advance, that is to determine if the detected value is identical with the one predicted from the database. Depending on the results from the detecting and comparison above, the control signal is generated to adjust the motor running state. With the technical method in this invention, the position sensor is not needed. This reduces the motor's external wiring amounts and the wiring complexity. Also the motor's seal is improved. Meanwhile, it is possible to measure the rotor's position accurately in any state according to this invention technology. Thus the motor running state can be controlled properly. | 2008-09-25 |
20080231218 | APPARATUS AND METHOD OF DRIVING MOTOR, AND DRIVE APPARATUS USING THE SAME - An open-loop driving method of a spindle motor includes determining of whether open-loop driving conditions for the spindle motor are met, and adjusting widths of driving pulses applied to the spindle motor according to a predictive speed variation of the spindle motor when it is determined that the open-loop driving conditions for the spindle motor are met. | 2008-09-25 |
20080231219 | MOTOR DRIVE APPARATUS AND MOTOR DRIVE METHOD - To reduce noise by limiting a current peak value to a predetermined value or less and by smoothing the waveforms of drive currents during the current limitation, switching control means ( | 2008-09-25 |
20080231220 | Image Forming Apparatus Appropriately Setting Current Value for Driving Motor - When a printing instruction is provided, a CPU causes a stepping motor M to drive a developer and calculates the value of a load of the stepping motor M before printing operations are performed. Then, CPU determines whether the value of the load is within a predetermined range stored in advance. If the value is not within the predetermined range, CPU causes a display to display an error message. | 2008-09-25 |
20080231221 | ARM-EQUIPPED MOBILE ROBOT AND METHOD FOR CONTROLLING THE SAME - A mobile robot contains a movable robot body, arms provided on the movable robot body, each of the arms having a multiple joint structure including plural joints, an actuator for actuating each of the joints and shaft torque sensors incorporated in each of the joints to detect a torque from the actuator at an output shaft of each of the joints, and a controller provided in the robot body to determine whether each of the arms is in contact with or in collision with a peripheral obstacle or obstacles based on change of an output from the shaft torque sensors and control an operation of each of actuators of each arm. | 2008-09-25 |
20080231222 | WHEELED MOVING ROBOT - A wheeled moving robot including a main body; wheels provided at least at opposite sides of the main body and configured to move the main body; an actuator configured to generate torque which rotates the wheels; a detector configured to detect whether the main body moves when the wheels rotates by the actuator; and a compensation unit configured to perform an auxiliary movement which pushes an auxiliary wheel in front or rear of the main body toward a floor based as a detection result of the detector. | 2008-09-25 |
20080231223 | Rotor Driving Control Device and Image Forming Apparatus - A device of a motor with a rotation control means that decreases the fluctuation of its rotation period. The control is carried out based on the amplitude and the phase generated by amplitude-and-phase generating devices, detecting passage time of detected portions ( | 2008-09-25 |
20080231224 | TIMER CIRCUIT AND TIME COUNT METHOD - A timer circuit includes a storage unit to store a series of first data content relating to a time into a specified address area, a target value generation unit to read the first data content from a read address of the storage unit and to generate, as a target value, third data content in which second data content is added to the first data content, a counter to perform counting and to output a count-up signal when the counting is performed up to the target value, and a control unit to sequentially designate a next read address of the storage unit at each count-up and to cause the series of operations of the target value generation unit and the counter to be executed. | 2008-09-25 |
20080231225 | POWER SUPPLY DEVICE CAPABLE OF COLLECTING SOLAR POWER, AND CLOTHING ASSEMBLY HAVING THE SAME - A clothing assembly includes a solar power collecting unit mounted on a garment for converting solar power into electrical energy, and a power supplying unit having a rechargeable battery set disposed in a housing, connected electrically and wiredly to the solar power collecting unit so as to be charged by the electrical energy therefrom, and a power switch mounted on the housing for controlling electrical connection between a power output port on the housing and the rechargeable battery set so as to permit supply of electrical power from the rechargeable battery set to a load connected electrically to the power output port when in an ON state. | 2008-09-25 |
20080231226 | Battery Powered Device - A battery powered apparatus ( | 2008-09-25 |
20080231227 | Nesting Negotiation for Self-Mobile Devices - Disparate robotic devices can be automatically recharged and reprogrammed by self-scheduling individual time slots for the available recharging area(s) of a charging station. These charging stations provide a nest to which each robot must return periodically for power. These nests can also provide new tasking or patches for the robotic devices. The charging station and the robotic devices are both provided with communications capabilities and a protocol by which they can negotiate to find a time slot in which the device can be recharged, as well as determining a correct connector and a battery type. | 2008-09-25 |
20080231228 | BI-DIRECTIONAL CHARGING/INTEGRATED POWER MANAGEMENT UNIT - A media enhanced shopping cart system comprises a shopping cart comprising a frame, a basket, a handle, a base tray, a plurality of wheels, a read component for performing a proximity scan of the shopping cart, a locationing component for determining a location of the shopping cart within a store based on the scan, and a display component for displaying at least one advertisement for a product based on the location of the shopping cart within the store, wherein the locationing component is further operable to determine a location of the product within the store relative to the shopping cart based on the scan, and wherein the display component is further operable to display an indication of the location of the advertised product relative to the location of the shopping cart. | 2008-09-25 |
20080231229 | Charging Device - A charging device includes a charging unit, a detecting unit, a determining unit, a current generating unit, an adjusting unit, and a display unit. The charging unit charges a battery. The detecting unit detects a voltage developed across the battery. The determining unit determines a charging state of the battery based on the voltage. The current generating unit generates a current. The adjusting unit adjusts the current based on the charging state. The display unit emits a first light having a first color and a first intensity in response to the current supplied thereto. The first intensity changes in accordance with changing of the current. | 2008-09-25 |
20080231230 | Using a circuit rating to establish a charge rate for an electric storage battery of an electric vehicle - A method for charging an electric storage battery in a plug-in electric vehicle through a power supply circuit includes coupling a charger to the circuit, providing the charger with a signal representing a current capacity of the circuit, using the signal to determine a maximum charge rate corresponds to the current capacity of the circuit represented by the signal, and charging the battery through the circuit and charger at the maximum charge rate. | 2008-09-25 |
20080231231 | SYSTEM AND METHOD FOR BALANCING STATE OF CHARGE OF SERIES CONNECTED CELLS - A system and method for charging an undercharged cell of a bank of series connected cells utilizes a charging circuit. The charging circuit includes an inductor that receives current from the entire bank of cells and then provides current to the undercharged cell. Pulse width modulation is utilized to turn the switches on and off to regulate the current that flows to the inductor and thus is provided to the undercharged cell. | 2008-09-25 |
20080231232 | Battery pack - A battery pack is constructed with a plurality of secondary batteries or a plurality of battery assemblies, each having a plurality of unit batteries, and at least one safety switch, which can facilitate precise measurement of the voltages of the plurality of secondary batteries or battery assemblies. The battery pack is constructed with a plurality of secondary batteries, at least one safety switch electrically connected between two adjacent batteries among the plurality of secondary batteries, and a plurality of sensing lines for measuring voltages of the plurality of secondary batteries. The quantity of the sensing lines is equals to a sum of the number of the secondary batteries, and the number of the safety switches, and plus one. | 2008-09-25 |
20080231233 | Power converter including auxiliary battery charger - A power charging system including a power converter unit and a selectively detachable battery charger module configured to receive power from the remote power converter unit and also receive and charge a rechargeable battery or batteries. The battery charger module is a stand alone accessory for use with the power converter unit, which power converter unit is also adapted to power and/or charge a portable electronic device such as a PDA, smart phone, MP3 player, camera, and so forth. | 2008-09-25 |
20080231234 | Pull-cord lighting device - A manually generatable lighting device utilizes a pull cord, which is mechanically linked to a motor, to charge a power pack for on-demand illumination of at least one light-emitting diode. The lighting device employs circuitry which enables its use as continuous light source, a night light which illuminates automatically in low-light conditions, or an emergency light which illuminates automatically during power failure. The lighting device includes a power plug and may be stored or illuminated portably or as plugged into a power outlet. Built-in charging circuitry allows electrical recharging of the power pack to a maximum of 4 hours of usage, although the pull cord mechanism extends the possible usage time because it allows the power pack to be manually recharged at any time regardless of the level of stored charge available in the power pack. The lighting device requires only minimal effort to achieve maximum brightness, and two complete actuations of the pull cord can achieve maximum charge. | 2008-09-25 |
20080231235 | CHARGER DEVICE - A device may include a first connector configured to connect to a portable device and a second connector configured to connect to a power source. The device may also include circuitry configured to provide a first charging current to the portable device via the first connector when the second connector is connected to a power adapter coupled to a power outlet and provide a second charging current to the portable device via the first connector when the second connector is connected to a universal serial bus port of a host device. | 2008-09-25 |
20080231236 | Battery Charger Operable for Selective One of a Plurality of Power Supplies - A battery charger is configured to use selective one of two or more power supplies including a commercial AC power supply and a DC power supply. An AC cable is fixedly secured to the body of the battery charger and a DC cable is detachably connected to the body of the battery charger. A single transformer is employed that has a first primary winding to which the AC power supply is connected a first switching element, a second primary winding to which the DC power supply is connected via a second switching element, and a secondary winding to which a battery pack to be charged is coupled. | 2008-09-25 |
20080231237 | METHOD AND APPARATUS FOR CHARGING NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - It is made possible to keep a nonaqueous electrolyte secondary battery in a charged state for a long period of time and minimize the degradation of the battery. A method for charging a nonaqueous electrolyte secondary battery including a cathode, an anode, and a nonaqueous electrolyte, includes: a first charging step of charging the nonaqueous electrolyte secondary battery at a first current value which increases the voltage of the nonaqueous electrolyte secondary battery; and a second charging step of charging the nonaqueous electrolyte secondary battery at a second current value which decreases the voltage of the nonaqueous electrolyte secondary battery. These two charging steps are repeated alternately. | 2008-09-25 |
20080231238 | METHOD AND SYSTEM FOR DETERMINING THE SOC OF A RECHARGEABLE BATTERY - A method of determining the state of charge (SOC) of a rechargeable battery, the method comprising charging the battery using a substantially constant charge current; measuring the battery temperature; and conducting a first measurement of the battery voltage at a time interval, t | 2008-09-25 |
20080231239 | Generator Set with Dual Mounting Capability - A generator set is provided with both a pin-on mount mechanism and a clamp-on mount mechanism for mounting the generator set to a container. Both the pin-on mount mechanism and the clamp-on mount mechanism are selectively positionable in either a deployed for use position or a stowed position. When the clamp-on mount mechanism is in the deployed for use position, the pin-on mount mechanism is positioned in a stowed position. When the pin-on mount mechanism is in the deployed for use position, the clamp-on mount mechanism is positioned in the stowed position. | 2008-09-25 |
20080231240 | HIGH VOLTAGE PROTECTION FOR A THIN OXIDE CMOS DEVICE - A circuit includes a voltage regulator ( | 2008-09-25 |
20080231241 | Transformers - A multi-transformer unit is operative for converting an input AC voltage at a first voltage level to a net output AC voltage at a second voltage level. The multi-transformer unit can be used in place of a conventional transformer or an AC machine and is designed to suppress the transfer of harmonics between the input and output AC voltages. The unit comprises at least two phase-shifting transformers, each transformer being operative to provide a phase shift relative to the first voltage level. On the primary side of the unit the transformers are arranged for independent connection to the first voltage level, whereas on the secondary side of the unit the transformers are linked such that voltage vectors on the secondary side of the unit are added together to at least partially cancel the harmonic pollution and give the net output AC voltage. Moreover, the phase shift of the phase-shifting transformers may be selected to completely or substantially add into the net AC output voltage of the multi-transformer unit the fundamental voltage/frequency applied to its input AC voltage. | 2008-09-25 |
20080231242 | Multi-Mode Voltage Supply Circuit - A supply voltage is provided in an integrated circuit by retrieving an indicator from a storage device and generating a supply voltage for use by the integrated circuit, the supply voltage being regulated responsive to the indicator being in a first state and unregulated responsive to the indicator being in a second state. Alternatively or additionally, an external voltage provided to the integrated circuit is compared with a threshold. The supply voltage is regulated responsive to the external voltage exceeding the threshold level and unregulated responsive to the external voltage falling below the threshold level. | 2008-09-25 |
20080231243 | LOAD INDEPENDENT VOLTAGE REGULATOR - An integrated circuit package ( | 2008-09-25 |
20080231244 | DC-DC CONVERTER - An overcurrent detection circuit ( | 2008-09-25 |
20080231245 | Current Source and Control Device - A current source contains a first switching element which is provided with a control input and is embodied and arranged in such a way that an output flow on an output side of a current source can be adjusted according to a control signal at the control input. The current source also contains a reference resistance that is electrically coupled to a first switching element in such a way that a potential difference above the reference resistance represents the output flow. The adjustment signal of a regulator unit depends on the voltage difference above the reference resistance, is the control signal of the first switching element, and contains a time function element which limits a first value of the output flow to a maximum duration and then reduces the value of the output flow. | 2008-09-25 |
20080231246 | Current Detection Circuit, Load Drive Circuit, and Memory Storage - A stable high-precision current detection circuit capable of continuously detecting load current through a load with extremely reduced power loss. The current detection circuit has a power transistor and a current detection transistor that are fed with a common power supply voltage and a common switching signal. A buffer circuit is provided for supplying an idling current to the output node of the current detection transistor while realizing the same virtual potential at the output terminals of these transistors. Thus, the buffer circuit always functions as a class-A amplifier. | 2008-09-25 |
20080231247 | Semiconductor device - To obtain a switching regulator which, when a load suddenly decreases, suppresses overshoot of output voltage without oscillating the output voltage is provided, even if being a current mode switching regulator, the present invention provides a semiconductor device for a switching regulator for converting input direct current voltage input from a direct current power supply to set direct current output voltage and outputting the output voltage from an output terminal, including: an overvoltage protection circuit for: comparing a target voltage with the output voltage at the output terminal; and making the output terminal in a discharge state when the output voltage exceeds the target voltage. | 2008-09-25 |
20080231248 | FAST START-UP CIRCUIT BANDGAP REFERENCE VOLTAGE GENERATOR - A bandgap voltage reference circuit includes a bandgap voltage generation circuit that can produce a bandgap reference voltage in response to an activation voltage signal, a start-up circuit that can produce the activation voltage signal in response to one-shot voltage pulse and an one-shot pulse generator circuit configured to produce the one-shot voltage pulse. The start-up circuit can be automatically shut off after the one-shot voltage pulse. | 2008-09-25 |
20080231249 | Integrated circuit current reference - An IC current reference includes a reference voltage V | 2008-09-25 |
20080231250 | Method and Assembly For Supplying Power to an Active Independent Component - The invention relates to a method for supplying power to an independent active component and to assembly comprising a rolling bearing and an independent electronic system ( | 2008-09-25 |
20080231251 | Method for Operational Amplifier Sharing Between Channels with Algorithmic Channel Selection - A multi-channel current regulator includes two or more channels, each channel acting as a current source or sink for a respective load. Each channel regulates its load current so that the load current is proportional to an input voltage supplied to the channel. An operational amplifier is shared between the channels. Each channel is selected in a rotating sequence for connection to the amplifier. As each channel is selected, a two-phase refresh cycle is initiated. During the first phase, the output of the amplifier is charged until it substantially matches the drive voltage of the selected channel. This is followed by the second phase where the output of the amplifier is adjusted until the load current of the selected channel is proportional to a set voltage V | 2008-09-25 |
20080231252 | Sag-Swell and Outage Generator for Performance Test of Custom Power Devices - The present invention relates to a sag-swell generator for generating power signal with sag, swell and outage for use in testing custom power devices. | 2008-09-25 |
20080231253 | Cumulative Chemical/Physical Phenomenon Detecting Apparatus - A sensitivity of a cumulative chemical/physical phenomenon detecting apparatus is improved. Prior to transferring charges at a sensing section to a floating diffusion section, the charges remaining at the sensing section are removed from the sensing section by a potential barrier formed between the sensing section and a charge injection adjusting section. | 2008-09-25 |
20080231254 | SPECTRUM ANALYZER, SPECTRUM ANALYSIS METHOD AND RECORDING MEDIUM - A spectrum analyzer that measures a signal component for every frequency of an input signal includes a local signal generating section generating a local signal having a designated frequency, a multiplying section outputting a synthesized signal obtained by multiplying the local signal with the input signal, a band-pass filter through which a signal component having a prescribed frequency band of the synthesized signal is passed, an A-D conversion section outputting a digital output signal obtained by sampling and digitalizing the passed signal component, a spectrum generation section that passes a signal component within a measured frequency range of the input signal through the band-pass filter and generates a first frequency spectrum based on the digital output signal acquired from the signal component passed through the band-pass filter, and an elimination section generating a frequency spectrum free of noise based on the first frequency spectrum generated by the spectrum generation section. | 2008-09-25 |
20080231255 | Three-Phase Current Sensor - A three-phase current sensor for measuring currents (I | 2008-09-25 |
20080231256 | Removable Front Panel Control for Oscilloscope - A test and measurement apparatus is provided including a control panel. The control panel is removable and user-replaceable with an alternate control panel. The control panel can be connected to the test and measurement apparatus or to a generic local computing device to control and interact with the test and measurement apparatus. | 2008-09-25 |
20080231257 | Method and apparatus for measuring the voltage of a power source - Various concepts and techniques are disclosed for measuring the voltage of a power source. An apparatus includes a voltage metering circuit and a transformer having a first winding coupled to the voltage metering circuit and a second winding for coupling to a power source. | 2008-09-25 |
20080231258 | STIFFENING CONNECTOR AND PROBE CARD ASSEMBLY INCORPORATING SAME - A stiffening connector assembly and methods of use are provided herein. In some embodiments a stiffening connector assembly includes a connector configured to be coupled to a substrate; and a mechanism coupled to the connector and configured to restrict rotational movement of the connector with respect to the substrate when coupled thereto. The mechanism may further provide a lateral degree of freedom of movement in a direction substantially parallel to the substrate. | 2008-09-25 |
20080231259 | INTERLOCKING ELECTRICAL TEST PROBES - A pair of interlocking electrical test probes, each probe having an interlocking end which mates or can be easily joined together with the other's end such that the pair of test probes can be operable with one hand when their respective interlocking ends are joined together. The pair of interlocking electrical test probes also capable of being operated separately or independently, one in each hand when in the unjoined state. When joined together, the pair of interlocking electrical test probes are free to pivot about their interlocked or mated ends, thus allowing the distance between their contact points to be varied while being held in one hand, therefore freeing up an electrician's or technician's other hand to hold a meter, flashlight, schematic or for some other purpose. | 2008-09-25 |
20080231260 | PUSHER FOR MATCH PLATE OF TEST HANDLER - A pusher for a match plate of a test handler is disclosed which assists a tester to test the produced semiconductor devices. The pusher includes: a body part installed to an installation plate; and a pushing part that extends forward from a front side of the body part, for pushing a semiconductor device placed on an insert of a test tray. The pusher forms: an air through hole that extends through from a rear side of the body part to the front side of the pushing part, for guiding air of a certain temperature, supplied to the rear side of the body part from a duct, to be supplied to the semiconductor device; and at least one or more air outflow holes that extend through from at least one side of the pushing part and communicate with the air through hole, for allowing part of the air supplied from the duct through the air through hole to flow out to a test site. The pusher can reduce the temperature deviation of semiconductor devices at the test site. | 2008-09-25 |
20080231261 | Hall-type sensor for measuring linear movements - A Hall-effect sensor assembly ( | 2008-09-25 |
20080231262 | Indicator Element For A Magnetic Rotation Angle Sensor - An indicator element for a magnetic rotation angle sensor having a field probe for generating a sensor signal in response to a geometric position of the indicator element relative to the field probe is disclosed. The indicator element has a permanent magnet with an annular cross-section having a plurality of segments, magnetization of the segments being in different directions so that a homogeneous magnetic field is formed in an inner region of the indicator element into which the field probe is arranged. At least two segments exhibit radial or diametrical magnetization and at least two segments exhibit lateral magnetization. | 2008-09-25 |
20080231263 | DISTANCE, ORIENTATION AND VELOCITY MEASUREMENT USING MULTI-COIL AND MULTI-FREQUENCY ARRANGEMENT - The present invention relates to the field of orientation measurement by a magnetic field generating apparatus and a magnetic field receiver apparatus by using one or more coils, respectively. Said coils transmit or receive at least one magnetic field being modulated by a frequency, respectively; thereby said apparatus provides a specific arrangement to said coils like e.g. a planar one to determine the relative orientation of said apparatus to each other. | 2008-09-25 |
20080231264 | System and Method for Magnetic Tracking of a Sensor for Interventional Device Localization - A system and method for determining the location of a remote object using a magnetic tracking sensor. The system and method include locating a magnetic core ( | 2008-09-25 |
20080231265 | POSITION DETECTOR WITH TILT SENSOR - A scale section is made of a magnetic material. A repeated pattern is recorded at a uniform pitch on the surface of the scale section. A sensor section is provided independently from the scale section. The sensor section is provided with a magnetic position sensor that reads the pattern, on a surface close to the surface of the scale section. Further, the sensor section is provided with a magnetic tilt sensor that detects a tilt between the surface of the scale section and the surface of the sensor section on which the position sensor is located. The magnetic position detector in which the scale section and the sensor section are separated from each other can be efficiently fixed to a detection target using the tilt sensor. | 2008-09-25 |
20080231266 | ABSOLUTE ENCODER - A printed circuit board on which are laid out detection windings and an excitation magnetic flux detection winding formed of conductor patterns is disposed so as to be spaced a predetermined gap quantity from a binary cyclic random number sequence code plate which is rotatably disposed. A U-shaped exciting core on which an excitation winding is wound is disposed on the back surface side of the printed circuit board. The detection windings detect and output, as voltage values, reluctance changes as which excitation magnetic fluxes generated from the excitation winding fluctuate between this excitation winding and the concave/convex portion of the binary cyclic random number sequence code plate. Reduction of precision due to interferences between the excitation magnetic fluxes for detecting an absolute code and other excitation magnetic flux is thereby prevented. | 2008-09-25 |
20080231267 | Liquid level detecting device - A liquid level detecting device includes a rotative member having a bearing portion and a stationary member having an axis portion. The axis portion is fitted to a hole of the bearing portion, thereby rotatably holding the rotative member. The rotative member is integrated with a displacement member. The stationary member is fixed with a detection unit to detect a displacement of the displacement member. The rotative member is connected with a float via an arm. The axis portion has an inserted portion inserted in the bearing portion and in contact with the bearing portion via a contact portion. The contact portion has a total area that is less than an area of an outer circumferential periphery of the inserted portion. | 2008-09-25 |
20080231268 | Imaging Method Based on Fractal Surface-Filling or Space-Filling Curves - The present invention relates to an imaging method and device for nuclear magnetic resonance. On the one hand, the method provides an image coding by means of an additional field which has, for each point of a two-dimensional grating surface within the sample, a different field strength value that occurs only once, as is the case, e.g., in fields based on fractal, surface-filling and space-filling curves. On the other hand, the read-out of the resonance behavior of a sample along a space-filling and/or surface-filling curve can be provided. In the first variant, a magnetic resonance (MR) image with a single high-frequency excitation without a time-varying gradient can be recorded, which in turn advantageously prevents the sound generation associated therewith. In the second variant, the sounds generated during read-out are advantageously shifted to another frequency range in which the human hearing is less sensitive. Furthermore, the device is relieved and the technical requirements with regard to it are reduced. In addition, it can be executed with known and existing devices. | 2008-09-25 |
20080231269 | MAGNETIC RESONANCE IMAGING APPARATUS, MAGNETIC-RESONANCE IMAGING MAINTENANCE APPARATUS, MAGNETIC-RESONANCE IMAGING MAINTENANCE SYSTEM, AND MAGNETIC-RESONANCE APPARATUS INSPECTING METHOD - A real-time system changes a combination of coil elements and channel assignations for each echo by using a pulse sequence, and collects data without performing phase encoding. A host system then calculates a correlation value of data reconstructed for each channel and reference data. When the correlation value is smaller than a predetermined threshold value, the host system judges the coil element combination to be abnormal. The host system makes a level correction on the collected data and creates an alternative solution for the abnormal coil element combination, including a reduction of a number of channels. | 2008-09-25 |
20080231270 | METHOD FOR ADJUSTMENT OF A B1 FIELD OF A MAGNETIC RESONANCE APPARATUS - In a method for adjustment of a B1 field in a magnetic resonance apparatus, the position of the measurement subject relative to a coordinate system is determined from a plurality of measurement subjects with a morphological magnetic resonance measurement. Three-dimensionally associable measurement subject data are determined from the measurement subject. Respective tissue types of the measurement subject are determined using the three-dimensional measurement subject data and a segmentation of the measurement subject into regions is effected using the tissue types. Known dielectric properties are respectively associated with the tissue types. The segmentation and the association for all positions of the measurement subject are recorded in respective entries of a database, such that the database contains all entries of the measurement subjects. A radio-frequency simulation for an transmission coils is implemented with the entries of the database, with which electrical field distributions and/or B1 field distributions related to spatial elements are determined as a simulation result and are entered as results into the database. For further magnetic resonance examinations, the entries of the database are used for determination of an optimized current distribution for elements of a transmission coil with which the B1 field is ultimately adjusted. | 2008-09-25 |
20080231271 | Magnetic resonance imaging apparatus and magnetic resonance imaging method - An MRI apparatus includes an imaging signal acquisition unit, a motion signal acquisition unit, a motion amount determination unit, a motion correction unit and an image reconstruction unit. The imaging signal acquisition unit acquires MR signals as imaging signals. The motion signal acquisition unit repetitively acquires MR signals having PE amount less than that of the imaging signals as motion signals. The motion amount determination unit obtains a motion amount using the motion signals. The motion correction unit performs correction processing of the imaging signals in accordance with the motion amount. The image reconstruction unit reconstructs an image using the imaging signals after the correction processing. | 2008-09-25 |
20080231272 | Magnetic Resonance Imager - Provided is a magnetic resonance imager capable of efficiently suppressing artifacts in radial scanning that is short of the number of echoes. | 2008-09-25 |
20080231273 | MAGNETIC RESONANCE IMAGING APPARATUS, MAGNETIC RESONANCE IMAGING METHOD AND SENSITIVITY DISTRIBUTION MEASURING APPARATUS - A magnetic resonance imaging apparatus which executes a scan for allowing an RF coil unit to transmit RF pulses to an imaging area of a subject in a static magnetic filed space and allowing the RF coil unit to acquire magnetic resonance signals generated in the imaging area, includes: a scan section which executes, as the scan, each of an actual scan for acquiring the magnetic resonance signals as actual scan data and a reference scan for acquiring the magnetic resonance signals as reference scan data; an image reconstruction unit which reconstructs an actual scan image about the imaging area, based on the actual scan data and reconstructs a reference scan image about the imaging area, based on the reference scan data; a transmission sensitivity distribution calculating unit which calculates a transmission sensitivity distribution at the transmission of the RF pulses by the RF coil unit in the imaging area, based on the reference scan image and the actual scan image; and an image correcting unit which corrects the actual scan image using the transmission sensitivity distribution, wherein the transmission sensitivity distribution calculating unit includes: a division image generating part which executes image processing for dividing the first reference image by the second reference image, thereby generating a division image; a labeling information generating part which executes a labeling process on the division image thereby to generate labeling information about the division image; a segmentation process executing part which executes a segmentation process on the actual scan image, based on the labeling information thereby to extract a plurality of segments from the actual scan image; and a fitting processing part which calculates relational expressions indicative of relationships between pixel values of pixels constituting the segments and pixel positions thereof with respect to the segments extracted from the actual scan image, by performing a process for fitting to polynomial models, and wherein the transmission sensitivity distribution is calculated based on the relational expressions calculated by the fitting processing part. | 2008-09-25 |
20080231274 | METHOD TO CONTROL A MAGNETIC RESONANCE SYSTEM - In a method for controlling a magnetic resonance system having a radio-frequency antenna structure and a number of individually controllable transmission channels, respective parallel radio-frequency signals are emitted via the transmission channels for generation of a desired radio-frequency field distribution in at least one specific volume region within an examination volume of the magnetic resonance system. A digital signal is generated for each of the transmission channels and is modulated on a carrier frequency. The radio-frequency signal so generated is transmitted via a radio-frequency signal path to the radio-frequency antenna structure and is amplified therein in a radio-frequency power amplifier. The digital signal is manipulated in a characteristic curve correction device on the basis of a correction characteristic curve predetermined for the respective radio-frequency signal path such that a distortion of the radio-frequency signal caused in the appertaining radio-frequency signal path is at least partially compensated. Respective individual correction characteristic curves for a specific measurement are predetermined for the various transmission channels dependent on a field distribution parameter that defines the desired radio-frequency field distribution. A magnetic resonance system implements such a method. | 2008-09-25 |
20080231275 | MAGNETIC RESONANCE METHOD AND APPARATUS FOR AUTOMATICALLY DETERMINING OBJECTS THAT ATTENUATE PENETRATING RADIATION - In a method and an apparatus for automatic determination of objects that attenuate high energy/penetrating radiation by magnetic resonance, the magnetic resonance apparatus scans and prepares MR images, and the MR images contain information about the T2 relaxation time constant. Subsequently, penetrating radiation-attenuating objects are determined in the MR images by means of the T2 relaxation time constant. | 2008-09-25 |