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| Number | Title | Issue Date |
| 7956554 | System and method for regulation of solid state lighting Exemplary embodiments of the invention provide a system, apparatus, and method of controlling an intensity and spectrum of light emitted from a solid state lighting system. The solid state lighting has a first emitted spectrum at full intensity and at a selected tem... | 06/07/2011 |
| 7667413 | High pressure discharge lamp operation method, operation device, light source device, and projection type image display device Provided is a method for lighting a high pressure discharge lamp capable of increasing the life thereof. The lighting method is as follows. When the time elapse after lighting up the discharge lamp is within a predetermined condition (e.g. 5 minutes or less), consta... | 02/23/2010 |
| 7436123 | Discharge lamp ballast device and lighting appliance An inverter controller dives an inverter to operate at a switching frequency selectively from one of a preheating frequency (f1), a starting frequency (f2), and a lighting frequency (f3) which are different from each other, thereby giving a preh... | 10/14/2008 |
| 7405715 | LED light apparatus with instantly adjustable color intensity An instantly controllable LED light apparatus provides an LED array (34) formed of red, green and blue LEDs in a regular arrangement. The apparatus also provides a unitary power supply/controller (4) disposed within a unitary housing (20) that i... | 07/29/2008 |
| 7382100 | Lighting control device having improved long fade off A lighting control device for controlling the light intensity level of at least one lamp is disclosed. The lighting control device includes an actuator and a controller operable to cause the light intensity level of the at least one lamp to fade at a first fade rate... | 06/03/2008 |
| 7359545 | Method and system to compensate for lamp intensity differences in a photolithographic inspection tool An after develop inspection tool considers tool-to-tool variability when determining confidence score for wafers under inspection. A golden wafer is used to calculate a RGB signature as well as the slope of the individual RGB curves for different lamp intensities. T... | 04/15/2008 |
| 7355354 | Method for starting a discharge lamp using high energy initial pulse The described DC to AC inverter efficiently controls the amount of electrical power used to drive a cold cathode fluorescent lamp (CCFL). Additionally, during striking of the CCFL, a higher energy initial energy pulse is used. During normal operation, a lower energy... | 04/08/2008 |
| 7352339 | Diffuse illumination systems and methods The systems and methods disclosed herein relate to sources of diffuse illumination for providing substantially uniform illumination to a surface. The diffuse illumination arises from varying the diffusion angle of light generated by an LED system. To vary the diffus... | 04/01/2008 |
| 7336041 | Automatic light dimmer for electronic and magnetic ballasts (fluorescent or HID) An apparatus is disclosed for automatic light dimming of electronic and magnetic ballasts used for fluorescent or high intensity discharge lamps. A variable capacitant's limiting current is added in the lamps which provides lighting intensity controls without changi... | 02/26/2008 |
| 7333004 | Self-adjusting strobe A strobe unit responds to a selected candela output by selecting an optimal capacitor charging frequency to minimize current requirements at the selected candela output. A plurality of charging frequencies can be stored and associated with available input power and ... | 02/19/2008 |
| 7329996 | Sine wave light-adjusting apparatus A sine wave light-adjusting apparatus adjusts the input sine wave voltage and output a desired output sine wave voltage to a lamp according to the desired brightness of the lamp to achieve the light-adjusting effect by adjusting the switching period of a switch and ... | 02/12/2008 |
| 7265684 | Onboard equipment for aircraft and the like An emergency lighting system for an aircraft comprises networked light units that communicate wirelessly with a master controller to switch the light units on in an emergency. Each unit has its own battery power source and is arranged conserve power consumption by c... | 09/04/2007 |
| 7245086 | Lamp operating circuit and operating method for a lamp having active current measurement The invention relates to a circuit and to a method for operating a lamp. In this case, a reactance for the purpose of detecting the lamp voltage, a zero point detection device for the purpose of determining the zero crossing of the current through the reactance and ... | 07/17/2007 |
| 7242314 | Strobe unit with current limiter A variable output strobe unit includes a variable current limiting circuit to limit peak current draw after each flash. Parameters of strobe output and current limiting circuit are related and can be set manually or electronically. ... | 07/10/2007 |
| 7231060 | Systems and methods of generating control signals Separating a source in a stereo signal having a left channel and a right channel includes transforming the signal into a short-time transform domain; computing a short-time similarity measure between the left channel and the right channel; classifying portions of th... | 06/12/2007 |
| 7218063 | Two light level ballast A ballast (100) for powering at least one gas discharge lamp (30) at two selectable light levels includes a sensing transformer (120) and a detector circuit (200). Detector circuit (200) provides an output voltage that is dependent... | 05/15/2007 |
| 7199530 | Digital ballast A ballast in which the drive current frequency is controlled by a voltage-controlled oscillator (VCO) that is capable of precise output frequency control. The VCO frequency is controlled by a microcontroller. The microcontroller may control the VCO frequency in resp... | 04/03/2007 |
| 7199531 | Variable output single constant source light fixture A light fixture having a variable light output level using one constant voltage power source includes multiple individually computer controllable light sources. Multiple light fixtures may be networked and individually controlled. Additional accessory control device... | 04/03/2007 |
| 7170238 | Control systems and methods Control systems and methods. An embodiment of control system may comprise a processor for receiving control signals from at least one input device when linked thereto. Computer-readable program code is provided for generating output signals at the processor based on... | 01/30/2007 |
| 7166970 | Lighting control device having improved long fade off A lighting control device for controlling the light intensity level of at least one lamp is disclosed. The lighting control device includes an actuator and a controller, such as a microcontroller, for example. The controller is operable to cause the light intensity ... | 01/23/2007 |
| 7163316 | Multi-functional ornamental lighting equipment A multi-functional ornamental lighting equipment is set forth. This equipment comprises an ornamental lighting load connected to form a plurality of branch circuits; a function controller formed of a variety of electric and electronic components operable for various... | 01/16/2007 |
| 7132804 | Data delivery track Track lighting methods and apparatus. In various examples, power and data are provided to a plurality of lighting fixtures via at least one pair of essentially rigid electrically conductive tracks that are mechanically coupled to an essentially rigid linear or curvi... | 11/07/2006 |
| 7122975 | Filament lamp light quantity control method and filament lamp light quantity control unit and filament lamp light source unit The invention relates to a light source unit control method and a light source control unit, and a light source unit comprising a filament lamp with a characteristic of having a light quantity changing almost in proportion to a control voltage, which comprise: a cur... | 10/17/2006 |
| 7119769 | Active matrix type organic EL panel drive circuit and organic EL display device A drive circuit of an active matrix type organic EL display panel includes a drive current generator circuit for generating drive currents corresponding to the red, green and blue colors in a predetermined sequence in response to a RGB switching signal and a current... | 10/10/2006 |
| 7091947 | Apparatus and method for prolonging lamp lifetime An apparatus for prolonging lamp lifetime by reducing luminance of a least one lamp (5) in phases includes an image signal outputting unit (1), a scaler (2), and a Microprogrammed Control Unit (MCU) (4). The MCU further includes a CPU ( | 08/15/2006 |
| 7084579 | Two light level ballast An electronic ballast (100) for powering at least one gas discharge lamp (30) at two light levels includes a full-wave rectifier circuit (120) and a detector circuit (200). Detector circuit (200) provides an output voltage that is ... | 08/01/2006 |
| 7070560 | Illumination control system and method for endoscopes A light source device enables manual and automatic light regulation performed on illumination light that is irradiated to an object. A set value of a light regulation level for light emanating from a light source which is determined for use of an endoscope 11... | 07/04/2006 |
| 7071634 | Lighting control device having improved long fade off A lighting control device for controlling the light intensity level of at least one lamp is disclosed. The lighting control device includes a microcontroller and a user-actuatable switch controller that is operatively coupled to the microcontroller. The microcontrol... | 07/04/2006 |
| 7042173 | Controllable lighting system with a second communication protocol and appliances for this purpose The invention relates to an electronic ballast and to a controller which drives this ballast, in which two communication protocols are provided for the digital drive. ... | 05/09/2006 |
| 7038398 | Kinetic illumination system and methods The present invention relates to methods of creating eye-catching displays by taking advantage of color-changing illumination provided by LED systems disclosed herein. Displays can be made to appear to change color or to move simply by changing the color of the ligh... | 05/02/2006 |
| 7038399 | Methods and apparatus for providing power to lighting devices Methods and apparatus for providing power to devices via an A.C. power source, and for facilitating the use of LED-based light sources on A.C. power circuits that provide signals other than standard line voltages. In one example, LED-based light sources may be coupl... | 05/02/2006 |
| 7034465 | Device for operating discharge lamps by means of a transformer with four windings, and a corresponding method A device for operating a plurality of discharge lamps is to be fashioned cost-effectively. Consequently, two discharge lamps (71, 72) are operated with the aid of one ballast in whose load circuit the heating current for the individual incandescent filaments ... | 04/25/2006 |
| 7002264 | Control circuit for turning a device on or off using a conventional wall switch or a device switch A control circuit for operating a lamp or other electrically operated device using a conventional wall socket outlet that is selectively energized under the control of a conventional wall mounted switch. To permit the lamp to be independently controlled using either... | 02/21/2006 |
| 6963178 | Apparatus for controlling operation of gas discharge devices A power controller for fluorescent lamp dimming is disclosed, using all digital internal and external programmable controls. A specific ASIC is described. A gate array and microcomputer share parallel functions with fast sub-functions carried out by the gate array a... | 11/08/2005 |
| 6960892 | Variable output single constant source light fixture A light fixture having a variable light output level using one constant voltage power source includes multiple individually computer controllable light sources. Multiple light fixtures may be networked and individually controlled. Additional accessory control device... | 11/01/2005 |
| 6958581 | High-intensity discharge lamp operating device and method for controlling the high-intensity discharge lamp A high-intensity discharge lamp operating device includes a power supplier configured to supply power to a high-intensity discharge lamp, a memory containing a starter power data set, an identifying power data set and steady power data sets, a detector configured to... | 10/25/2005 |
| 6933681 | Circuit arrangement and method for starting and operating discharge lamps In the case of circuit arrangements for operating discharge lamps (Lp1, Lp2) which include a charge pump for reducing line current harmonics, an energy imbalance occurs when the lamps are started. In order for this not to lead to components being destr... | 08/23/2005 |
| 6933686 | Programmable AC power switch An AC controller provides programmable switching of AC power flow, together with producing a source of DC power for the AC controller. The AC controller is connected in series with only one side of the AC power source and the AC load, and uses a microcontroller or a... | 08/23/2005 |
| 6917231 | Pulse width modulation circuit and illuminating device incorporating same In a pulse width modulation circuit, which generates an output whose pulse width is modulated by controlling a duty ratio of an oscillation circuit adapted to generate an oscillation at a frequency determined by a resistor and a capacitor to be electrically charged ... | 07/12/2005 |
| 6911789 | Power supply for a hot-filament cathode In accordance with one embodiment of the present invention, there is provided a switch-mode power supply to generate the heating current for a hot-filament electron-emitting cathode. The power supply directly couples, without an output transformer, the output from a... | 06/28/2005 |
