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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 8179050 | Helicon plasma source with permanent magnets A helicon plasma source has a discharge tube, a radio frequency antenna disposed proximate the discharge tube, and a permanent magnet positioned with respect to the discharge tube so that the discharge tube is in a far-field region of a magnetic field produced by th... | 05/15/2012 |
| 8179056 | System and method for remote control lighting Remote lighting control methods, devices and systems are disclosed. One embodiment of the present invention pertains to a light device. The light device includes a light source for emitting light and a control circuit for setting an intensity level of the light sour... | 05/15/2012 |
| 8174207 | Lamp and driving device for backlight assembly having the same A device for driving a backlight assembly includes a controller for outputting a control signal, a switching unit for outputting a DC square wave voltage in response to the control signal, an inverter for converting the DC square wave voltage into an AC voltage and ... | 05/08/2012 |
| 8164267 | Electro-optical device, matrix substrate, and electronic apparatus To provide a wiring layout of electric power lines, which improves the aperture ratio of the pixel while forming pixels with the same pixel pitch. An electric-optical apparatus according to the present invention comprises multiple pixels (10) arranged in matr... | 04/24/2012 |
| 8164276 | LED drive device, LED drive method and lighting system A drive circuit drives LED groups each of which has a plurality of LEDs connected in series. The drive circuit includes nMOSFETs which drive the LED groups, current regulating circuits which determine drain currents of the nMOSFETs, and subtracters which control the... | 04/24/2012 |
| 8159148 | Light emitting diode light source module A light emitting diode (LED) light source module includes plural voltage converters to convert an input voltage into plural corresponding different operation voltages. A plurality of sets of different color LEDs are provided in the light source module, where each se... | 04/17/2012 |
| 8155271 | Potential control for high-voltage devices The present embodiments related to a device having a device element to which a high voltage can be applied. The device is provided with at least one additional conducting element which is disposed, embodied and connected in such a way that the element is assigned a ... | 04/10/2012 |
| 8148907 | Dimmable power supply Various embodiments of a dimmable power supply are disclosed herein. For example, some embodiments provide a dimmable power supply including an output driver, a variable pulse generator and a load current detector. The output driver has a power input, a control inpu... | 04/03/2012 |
| 8143790 | Method for inductively-driven plasma light source A method for producing light includes introducing an ionizable medium for generating a plasma into a chamber. The method also includes applying at least one pulse of energy to a magnetic core that surrounds a portion of a plasma discharge region within the chamber s... | 03/27/2012 |
| 8143799 | Light emitting diode driving circuit A LED driving circuit includes a transformer, a rectifying filtering circuit, a PWM IC, a constant current circuit, and a feedback circuit. The transformer has a primary side and a secondary side. The rectifying filtering circuit is coupled to the secondary side and... | 03/27/2012 |
| 8143791 | Control system for light-emitting device A control system for a light-emitting device may include test circuitry, photodetectors, and process circuitry. The test circuitry is configured to sequentially drive individual groups of light-emitting elements in a light-emitting device during a test sequence. Eac... | 03/27/2012 |
| 8143804 | Light source driving device A light source driving device includes a power factor correction (PFC) circuit, a power stage circuit, a power conversion circuit, a balancing circuit, an inverter control signal processor, an inverter controller and an isolation component. Alternating current (AC) ... | 03/27/2012 |
| 8143788 | Compact high current rare-earth emitter hollow cathode for hall effect thrusters An apparatus and method for achieving an efficient central cathode in a Hall effect thruster is disclosed. A hollow insert disposed inside the end of a hollow conductive cathode comprises a rare-earth element and energized to emit electrons from an inner surface. Th... | 03/27/2012 |
| 8138691 | Multi-channel driving circuit and driving method thereof A driving method of a multi-channel driving circuit includes: receiving multiple driving signals corresponding to multiple to-be-driven elements, providing multiple randomized time delays, respectively adjusting the driving signals according to the randomized time d... | 03/20/2012 |
| 8134298 | Decorative light string device The present invention discloses a decorative light string device, which comprises: a power plug receiving AC power, a tail socket coupled to the power plug, and a LED string with one end thereof coupled to the power plug and the other end thereof coupled to the tail... | 03/13/2012 |
| 8133348 | Plasma generating apparatus and plasma treatment apparatus A plasma generating apparatus includes a coaxial convertor for coaxial-converting a microwave, a generally annular ring slot that passes the coaxial-converted microwave, and a dielectric window that propagates the microwave passed through the ring slot. A plasma is ... | 03/13/2012 |
| 8127477 | Illuminating display systems An exemplary system comprises a power regulator and an emitting apparatus. The emitting apparatus is typically attached to or integrated with a display object, such as a merchandise package or container. A support structure, such as a point of purchase display, typi... | 03/06/2012 |
| 8125709 | Illumination device, in particular for microscopes The present invention is directed to a controllable microscope illumination within a microscope system by which all essential contrasting methods in microscopy can be realized. The illumination device according to the invention comprises a plurality of individual li... | 02/28/2012 |
| 8125157 | Light source and method for producing light modifiable in colour and/or luminosity The present invention relates to a light source, which produces light leaving the light source with modifiable color and luminosity, with at least one light emitting diode for emitting primary radiation, comprising a layer connected with said diode, wherein said lay... | 02/28/2012 |
| 8118441 | Color-variable LED light, particularly for lighting the interior of vehicles The invention relates to an LED light, particularly a reading or seat lamp for vehicles such as travel coaches or airplanes, said light being equipped with a housing (36), a plurality of LEDs comprising first LEDs (16) that transmit electromagnetic rad... | 02/21/2012 |
| 8120266 | Driving circuit for driving a load A driving circuit comprises a first and a second switching circuit coupled in parallel to a node which is adapted to be coupled to a load, a first and a second detecting circuit, and a synchronizing circuit having an input coupled to the first and second detecting c... | 02/21/2012 |
| 8120277 | Hybrid-control current driver for dimming and color mixing in display and illumination systems A control/driver circuit produces variable current output for a lighting system providing improved dimming and color-mixing capability by allowing digital modulation control in addition to analog control over a range of illumination intensities. The circuit and meth... | 02/21/2012 |
| 8120201 | LED vehicle lighting apparatus An LED vehicle lighting apparatus including a fail-safe function can supply a plurality of LEDs connected in series with a requisite voltage that is larger than a supply voltage of a battery. The vehicle lighting apparatus can include a DC-DC convertor and a subsidi... | 02/21/2012 |
| 8120600 | Light emission control system and image display system The present invention provides a light emission control system including a plurality of light emitting modules each including a plurality of light emitting elements and each being a unit to be controlled, light emitting module controllers each provided for each of t... | 02/21/2012 |
| 8113684 | Fluorescent lamp support Apparatus and methods for supporting a lamp. The apparatus may include a ballast, a rigid power distribution unit, and a lamp holder. The lamp holder may be in electrical communication with the rigid power distribution unit. The rigid power distribution unit may inc... | 02/14/2012 |
| 8115409 | Driving circuit and method of backlight module A driving circuit includes a signal generator, a resonant circuit, a control circuit and an adjusting circuit. The signal generator is utilized for generating an alternating current (AC) signal having a fixed frequency. The resonant circuit is coupled to the signal ... | 02/14/2012 |
| 8115414 | LED driver with segmented dynamic headroom control Techniques for dynamic headroom control in a light emitting diode (LED) system are disclosed. An output voltage is provided to drive a plurality of LED strings. A feedback controller monitors the tail voltages of the LED strings to identify the minimum tail voltage ... | 02/14/2012 |
| 8110970 | Light-emitting devices utilizing gaseous sulfur compounds A light-emitting device utilizing gaseous sulfur compounds is provided. This device includes a first substrate with an energy transmission coil disposed thereover, a dielectric barrier layer embedding underneath the energy transmission coil, a sealant wall circling ... | 02/07/2012 |
| 8106604 | LED driver with dynamic power management A light emitting diode (LED) system implements a LED driver to drive a set of one or more LED strings. The LED driver includes a voltage source to provide an adjustable output voltage to a head end of each LED string of the set for a first duration and a second dura... | 01/31/2012 |
| 8102125 | Apparatus and methods for reducing the power consumption of fluorescent lights Systems for reducing the power consumption of fluorescent lights are provided. The systems can be used in new construction as well as retrofitted into existing buildings employing overdriven fluorescent lights without significantly affecting the operation of utility... | 01/24/2012 |
| 8102107 | Light-emitting devices having excited sulfur medium by inductively-coupled electrons A light-emitting device having an excited sulfur medium by inductively-coupled electrons is provided. This device includes a substrate, an energy transmission coil disposed over the substrate, a transparent discharge cavity disposed over the energy transmission coil... | 01/24/2012 |
| 8102127 | Hybrid gas discharge lamp-LED lighting system A lighting system and method combine at least one LED and at least one gas discharge lamp within a common housing. The lighting system includes a control system to dependently operate each LED and each gas discharge lamp during overlapping, non-identical periods of ... | 01/24/2012 |
| 8102122 | System and apparatus for cathodoluminescent lighting A cathodoluminescent lighting system has a light emitting device having an envelope with a transparent face, a cathode for emitting electrons, an anode with a phosphor layer and a conductor layer. The phosphor layer emits light through the transparent face of the en... | 01/24/2012 |
| 8098018 | Pulse dimming circuit and the method thereof The present invention provides a pulse dimming circuit and a method thereof. The pulse dimming circuit is compatible for both DC input signal and PWM input signal using only one circuit board, and includes a first input port, a second input port, a comparison signal... | 01/17/2012 |
| 8096673 | Auto-controlling power saving system for solar energy street lamps An auto-controlling power saving system for solar energy street lamps includes at least one street lamp, each street lamp having a light source at an upper end thereof; a battery set; at least one solar plate installed at an upper end of the light source for absorbi... | 01/17/2012 |
| 8098015 | Lamp operation device and image display device A lamp operation device includes a mode setting part that sets an operation mode for lamps, and a lamp operation part that controls switching between the lamps in accordance with the set operation mode. The lamp operation part includes a process corresponding to a m... | 01/17/2012 |
| 8093839 | Method and apparatus for driving CCFL at low burst duty cycle rates A cold cathode fluorescent lamp controller constituted of a pulse generator exhibiting a cycle period; a burst dimming control operative to set a burst dimming duty cycle for the pulse generator; a comparator arranged to receive a signal indicative of the value of c... | 01/10/2012 |
| 8089213 | LED fluorescent lamp Provided is a light-emitting diode (LED) fluorescent lamp using as light sources a plurality of LEDs, which are eco-friendly and can contribute to power conservation. The LED fluorescent lamp includes an LED array including a plurality of LEDs connected in series; f... | 01/03/2012 |
| 8087798 | Light source with optimized electrical, optical, and economical performance An optimized light source and a method of manufacturing the same. The light source is made up of an array of individual lighting elements and is optimized for electrical, optical and economic performance, as well as a method for configuring such an array. The a proc... | 01/03/2012 |
| 8084954 | Lamp driving circuit The present invention relates to a lamp driving circuit capable of achieving miniaturization by using a safe insulation type multi-output transformer. The lamp driving circuit in accordance with the present invention includes a rectification unit for rectifying an i... | 12/27/2011 |
