Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 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 |
| 7242152 | Systems and methods of controlling light systems An embodiment of the invention is a system for generating control signals. The system may allow a user to generate an image, representation of an image, algorithm or other effect information. The effect information may then be converted to lighting control signals t... | 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 |
| 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 |
| 6949890 | LCD back light panel lamp connecting structure An improved LCD back light panel lamp connecting structure comprises at least one set of cold cathode fluorescent lamps (CCFL), each having its high voltage end and feedback end arranged alternately, and the feedback ends on both sides of the CCFL respectively coupl... | 09/27/2005 |
| 6921286 | Light emitting diode jumper cables A jumper cable assembly has a pair of clamps at both ends for parallel connection to a weak and a strong battery for starting a motor. Along the side of the assembly is mounted at least one light emitting diodes (LED) that is powered when either end of the assembly ... | 07/26/2005 |
| 5072154 | Automatic luminosity control device for car and motor bicycle headlamps A luminosity control device includes a photosensitive member to control the duty cycle of a square wave pulse oscillator. Then a high power switching tube and a high power gain tube are used to proceed with the luminosity control. Thus, when two cars meet... | 12/10/1991 |
| 5049869 | Dimming circuit for dual display aircraft instruments A dimming circuit (10) for use with an illuminated dual display (12) of an aircraft instrument is provided. A voltage divider (14) divides a variable supply voltage, VS, produces an input voltage, VIN, and applies VIN to o... | 09/17/1991 |
| 4420711 | Circuit arrangement for different color light emission A circuit arrangement for different color light emission, comprises first series circuit of a first light-emitting element having a given color, a diode, and a resistor; and a second series circuit of a second light-emitting element having another color a... | 12/13/1983 |
| 4366417 | Suppression circuit for interference pulses in transformers with high leakage inductance A circuit for suppressing interference pulses occurring in transformers with high leakage inductance. The circuit includes current controlled switches connected to the transformers having secondary windings. The switches are controlled by a trigger circui... | 12/28/1982 |
| 4080551 | Circuit for plural lamp control in slide projectors or the like Two lamps are controlled in that one is off and the other one on or vice versa with fractural transition from one state to the other being controlled by a differential amplifier with integrated, pulse or trigger switch operated Miller integrator. The diff... | 03/21/1978 |
| 3991343 | Control circuit for progressively varying illumination intensity of lamps A control circuit for progressively and gradually varying the illumination intensity of incandescent lamps. The circuit comprises a source of alternating current connected in series with an electric lamp load which is also in series with a silicon control... | 11/09/1976 |
