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| Number | Title | Issue Date |
| 7385310 | Electronic ballasts which can be connected in parallel on the basis of the type of lamp The invention relates to the supply of lamps (8″, 8′″) of at least two different lamp types, of which a first lamp type (8′″) has a wattage which is approximately a whole multiple of the wattage of a second lamp type (8″), whereby th... | 06/10/2008 |
| 7263620 | System and method for graceful shutdown of host processor cards in a server system A host processor card configured to be fitted into a server system includes a processor, and a memory coupled to the processor for storing an operating system. A power control line controls the power state of the host processor card. A graceful shutdown circuit is c... | 08/28/2007 |
| 7245085 | Lamp fault detector The continuity of a series-wired, lamp circuit is restored after interruption caused by failure of a lamp filament by providing a control relay that is wired in parallel with each lamp. A power resistor having a resistive load substantially the same as that of a lam... | 07/17/2007 |
| 7190093 | Modular automation device including control and power units An automation device includes a modular assembly with a primary group configured for use with a hardware element. The primary group includes a controller providing signals. A feeder unit provides power to automated units. A primary first link connects the input/outp... | 03/13/2007 |
| 7129654 | Flashing light control apparatus and method thereof The present invention describes a flashing light apparatus and method for operating the same. A pulse signal generated by a pulse signal generator and the states of the general purpose Input/Output pins of a CPU are used to control the lights to flash. ... | 10/31/2006 |
| 6930456 | Method and apparatus for controlling images with image projection lighting devices A lighting system includes a central controller and multiparameter lights, including IPLDs. A display of the multiparameter lights at the central controller includes the IPLDs and their image parameters, which are used to evoke a display of graphics tools at the cen... | 08/16/2005 |
| 6930455 | Theatrical lighting control network A theatrical lighting control network is disclosed which incorporates a local area network for communication among a number of node controllers and control consoles or devices employed in establishing lighting or other effects levels in a theater, film production st... | 08/16/2005 |
| 6806659 | Multicolored LED lighting method and apparatus Illumination apparatus and networks of the same including a number of different embodiments. In one embodiment, the illumination apparatus comprises a plurality of LEDs including at least two different colors; a switching device, interposed between the LEDs and a co... | 10/19/2004 |
| 6664745 | Apparatus for digital communications with multiparameter light fixtures A typical light fixture is an integral unit that has a lamp assembly and a communications node to control the lamp assembly. Lighting systems contain many such light fixtures. One type of lighting system has at least two communications systems that interc... | 12/16/2003 |
| 6621235 | Integrated LED driving device with current sharing for multiple LED strings An integrated LED driving device for multiple LED strings which employs a single linear regulator or other controller and a multiple-output current mirror which is almost independent of the DC input voltage source, almost independent of the transistor's o... | 09/16/2003 |
| 6605907 | Method, apparatus and system for image projection lighting A central controller and a number of image projection lighting devices ("IPLD"), a type of multiparameter light, are interconnected by an enhanced performance communications path that is capable of simultaneously carrying different digital signals on vari... | 08/12/2003 |
| 6570348 | Apparatus for digital communications with multiparameter light fixtures A typical light fixture is an integral unit that has a lamp assembly and a communications node to control the lamp assembly. Lighting systems contain many such light fixtures. One type of lighting system has at least two communications systems that interc... | 05/27/2003 |
| 6545586 | Method and apparatus for establishing and using hierarchy among remotely controllable theatre devices A theatre system operating in compliance with the DMX512 protocol is also able to support remote channel assignment of the various theatre devices included therein as well as other auxiliary operating modes by establishing a device hierarchy based on uniq... | 04/08/2003 |
| 6483260 | Apparatus for operating respective single lamps among multiple lamps coupled to the same ballast An apparatus and method are provided for operating one of a plurality of lamps employed within a luminaire via a single ballast, thereby extending the operational life of the luminaire. The operating lamp disables the lamps downstream from itself by preve... | 11/19/2002 |
| 6459217 | Method and apparatus for digital communications with multiparameter light fixtures A typical light fixture is an integral unit that has a lamp assembly and a communications node to control the lamp assembly. Lighting systems contain many such light fixtures. One type of lighting system has at least two communications systems that interc... | 10/01/2002 |
| 6392368 | Distributed lighting control system A lighting system includes a plurality of control modules distributed on the AC power line for remote control of lights within a residential/office building structure. Each control module is hard-wired to an electrical load and is provided with a dimmer a... | 05/21/2002 |
| 6362577 | Discharge lamp lighting circuit In a discharge lamp lighting circuit 1 using a common starter circuit 5A to a plurality of discharge lamps 6i (i=1, 2, . . . , n) to start the discharge lamps 6, the starter circuit 5A has a transformer 7 comprising a plurality of secondary windings 7bi (... | 03/26/2002 |
| 6351083 | Circuit for selective power supply to electrical units A circuit is provided for selectively providing electric supply voltage from an input feed line with a neutral conductor, a phase conductor and optionally an earth conductor to individual or parallel-connected groups of connected terminals each comprising... | 02/26/2002 |
| 6329766 | Digital illumination adjusting circuit A digital illumination adjusting circuit used to adjust the output to a power level of an alternating load via a digital setting manner is disclosed. The digital illumination adjusting circuit includes a microprocessor unit, a power phase detecting circui... | 12/11/2001 |
| 6285140 | Variable-effect lighting system A variable-effect lighting system includes a lamp assembly, and a programmable lamp controller. The lamp assembly comprises a string of bicolored lamps, each bicolored lamp including a first illuminating element for producing a first color of light, and a... | 09/04/2001 |
| 6246187 | System for promoting passive end of life light source failure A system for promoting passive end of life light source failure in response to thermal cycling of the light source includes an automatic relay in communication with a ballast or groups thereof for interrupting power to the associated light sources. Altern... | 06/12/2001 |
| 6150775 | Contact actuated lamp A lamp device includes an oscillating circuit and a brightness control circuit coupled to the lamp member. The brightness control circuit has two or more capacitors of different capacitances for energizing the lamp device to different brightnesses. A cont... | 11/21/2000 |
| 6066922 | Electron emission device and display device using the same An electron emission device exhibits a high electron emission efficiency. The device includes an electron-supply layer of metal or semiconductor, an insulator layer formed on the electron-supply layer, and a thin-film metal electrode formed on the insulat... | 05/23/2000 |
| 6023131 | Backlight device for a liquid crystal display A backlight device for a color liquid crystal display includes a high-voltage generating means including a d.c. power source, an inverter and a switch interposed between the d.c. power source and the inverter to control the output supplied from the high-v... | 02/08/2000 |
| 5914573 | Go-go light belt including sawtooth wave or step-wave triggered lamp sections An electrical go-go light belt includes a sawtooth or step-wave generator. The sawtooth or step-wave is transmitted to a lamp section via a drive line, the voltage of the rising sawtooth or step-wave being supplied to a voltage divider to trigger silicon ... | 06/22/1999 |
| 5783910 | Flat panel display in which low-voltage row and column address signals control a much higher pixel activation voltage This invention is directed to an improvement of a field emission display architecture in which low-voltage row and column address signals control a much higher pixel activation voltage. Instead of using a pair of series-coupled transistors the emitter nod... | 07/21/1998 |
| 5661468 | Radio paging electrical load control system and device A system for remote control of electrical load devices, particularly electrical lighting where the commands are broadcast over a radio pager system. A radio pager receiver is located within or nearby the electrical light fixture and is normally in a stand... | 08/26/1997 |
| 5616991 | Flat panel display in which low-voltage row and column address signals control a much higher pixel activation voltage This invention is directed to an improvement of a field emission display architecture in which low-voltage row and column address signals control a much higher pixel activation voltage. Instead of using a pair of series-coupled transistors in the emitter ... | 04/01/1997 |
| 5293304 | Dual mode anticollision/recognition lamp for aircraft A dual mode exterior lamp for an aircraft includes a higher intensity anticollision light, a lower intensity recognition light, a power supply for the lights, and means for activating the anticollision light when the aircraft is airborne and for activatin... | 03/08/1994 |
| 5283537 | Current mirror circuit A current mirror circuit has first through fourth transistors. The first and second transistors are of a first conductivity type and have their emitters connected to a power source and their bases commonly connected. The third transistor is of the first c... | 02/01/1994 |
| 5177404 | Removable power service module for recessed lighting system A recessed lighting fixture system comprising a power service module which includes sockets for receiving fluorescent light lamps, a ballast for driving each of the light lamps, and a field adjustable connector which is electrically connected to the socke... | 01/05/1993 |
| 5128594 | Illumination control apparatus An illumination control apparatus is constituted by a main operation panel for performing dimming control of a plurality of different lighting units, a plurality of dimming terminals for receiving dimming data from the main operation panel, and a pair of ... | 07/07/1992 |
| 5099177 | Lamp circuit with disconnected lamp detecting device A plurality of current transformers connected in series provide secondary winding sides respectively connected to lamps. A constant-current source is provided to supply constant current to these lamps. Each lamp is connected to the corresponding terminal ... | 03/24/1992 |
| 5091677 | Lighting control system for pinball games A lighting control system for pinball games employs a lighting circuit board that supports at least one string of lamps connected in parallel. The lighting board associates a triac with each lighting string for switching the output of an a.c. power supply... | 02/25/1992 |
| 5091678 | Table lamp controlling device A table lamp controlling device comprising a power controller controlled by a scanner, which detects signal input, to produce a signal output for driving a starter, via a mercury switch, to increase or reduce the intensity of light of the lamp or to cut o... | 02/25/1992 |
| 5072216 | Remote controlled track lighting system A track lighting system is provided including a power track electrically connected to electrical power lines in a building. A plurality of track lighting units are selectively engageable with the power track. Each track lighting unit includes a signal res... | 12/10/1991 |
| 5068577 | Constant current drive system for fluorescent tubes Novel systems, circuits, and methods for initiating ionization, maintaining constant illumination current, and extinguishing illumination in a gas discharge tube and in gas discharge tube arrays. Input controls for current regulating circuits for gas disc... | 11/26/1991 |
| 5027031 | Truck trailer lighting control circuit A lighting control circuit having particular adaptability to tractor-trailer truck usage where a considerable increase of illumination is provided for the best interests of safety. The circuitry provides non-blinking left and right turn signal lights whic... | 06/25/1991 |
| 5026775 | Polyvinyl butyral pellicle compositions An improved pellicle for use in projection printing comprises a pellicle in which the transparent film is formed from a specific polyvinyl butyral resin from a casting composition which is a mixture of the specific polyvinyl butyral resin and dimethylform... | 06/25/1991 |
| 4894588 | High efficiency flasher A heavy duty flasher for incandescent lamps for a motor coach or the like incorporates a pair of power MOSFETs in parallel for efficient, cool operation and includes a pair of timers, one for flash rate control and the other for producing AC for operating... | 01/16/1990 |
