Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 7357514 | Methods and systems for improving operation of a video projector A video projector generates a black screen. Further, the video projector reduces the brightness of the light source which reduces the power level of the video projection system. Since the light source's power is reduced, less heat is generated by the video projector... | 04/15/2008 |
| 7072110 | Apparatus based on pulsing for projection of a stereo or multichannel image The invention relates to an apparatus for projecting a moving or still stereo or multichannel image (IM), said apparatus comprising at least a first (R) and at least a second (L) video projector, or the like, for projecting images intended for the left and the right... | 07/04/2006 |
| 7055966 | Illuminator and projector When a video signal is inputted to a projector (10) through a video input terminal, a luminance peak value of an image of the video signal is detected by an image-analyzing circuit (61) to be outputted to a CPU (71). A gain-adjusting circuit ( | 06/06/2006 |
| 6866390 | Image modification effects for image projection lighting devices A stage lighting apparatus includes a lamp and a first light valve, which cooperate to project a first image and a second image wherein the second image is created by applying a function to a plurality of pixels of the first image. The plurality of pixels of the fir... | 03/15/2005 |
| 6631996 | Projection system, and method of operating a projection system A method of operating a projection system with at least one high intensity discharge lamp (HID lamp), a rotatable color disc with at least three segments of different colors, and an array (DMD) comprising a plurality of individually movable mirrors, where... | 10/14/2003 |
| 6540363 | High reliability display system A high-reliability display system is disclosed. The display system includes a plurality of projection channels. Each projection channel projects a substantially mutually exclusive portion of an image onto a display area. A controller determines the conten... | 04/01/2003 |
| 6520648 | Lamp power pulse modulation in color sequential projection displays A frame sequential color display projection system (110) of this invention includes an arc lamp (112) having a predetermined power rating for providing a source of polychromatic light that propagates through a color wheel (120) that sequentially provides ... | 02/18/2003 |
| 6508556 | Projection display apparatus Disclosed is a projection display apparatus in which the optical axis of a lamp and that of an optical unit can be easily made coincide with each other irrespective of dimensional variations of component parts. A lamp holder (32) is movably attached to a ... | 01/21/2003 |
| 4595266 | Multiple projection optics slide projection apparatus using a circular slide tray, having fixed-position slide gates A slide projector having two projection optics systems (12,14) for display of slides on a screen. Each projection optics system includes a fixed position slide gate (24, 36) into and from which slides move relative to a circular slide tray (16), which rot... | 06/17/1986 |
| 4350417 | Apparatus to control light intensity from arc lamp An apparatus for controlling the light intensity output from an arc lamp for use with an arc lamp-illuminated projector includes a light valve to control the projector output light intensity by the selective positioning of the light valve in all or a port... | 09/21/1982 |
| 4274719 | Slide projector A series of slides are placed in a vertical loader and are movable alternatively into respective ones of two projection positions. Each slide is moved laterally of the loader by a carriage, then pushed to the projection position by a push rod. During proj... | 06/23/1981 |
| 4231643 | Photographic film projection dissolve system for arc lamp projectors A photographic film projection system includes a plurality of projectors, one of which is an arc lamp projector, and a dissolver instrument whose controlled output power to the arc lamp projector is a phase controlled average a.c. power. The arc lamp proj... | 11/04/1980 |
| 4165161 | Multiple optics slide projector The projector includes two projection optics systems and two slide gates which move slides acquired from a slide receptacle into and out of a viewing position in all of the projection optics systems. The slide gates are movable between a first position, w... | 08/21/1979 |
| 4097134 | Projection device A projection device provided with at least two different enlarging projection systems for the projection on a screen of a set of at least two slides provided on one carrier, said slides covering the same area of a plan or map, one slide being more detaile... | 06/27/1978 |
| 4086005 | Audio-visual programmer A multimedia motion picture and photographic slide projection control apparatus which permits a plurality of projector devices to be controlled from an operator's console. Manually operable switch means, operating through digital control means, develops a... | 04/25/1978 |
| 4080637 | Synchronized tape slide projector control system A control system synchronizes the operation of a plurality of controlled mechanisms such as slide projectors by means of unique frequency tone-binary code signals recorded on a magnetic tape. In a particular embodiment, six slide projectors and one movie ... | 03/21/1978 |
| 4076399 | Control mechanism for a plurality of slide projectors A control system for the control of special functions in multiple projector systems is disclosed. The system can effect fading, blending and mixing at different speeds in forward and reverse projector directions. The system includes a freely programmable ... | 02/28/1978 |
| 4029407 | Fading mechanism for slide projectors with automatic focusing means A picture slide projector having provision for automatic focusing (i.e., provision for automatically keeping the projection lens and the picture slide at a constant distance from each other notwithstanding a buckling displacement of the slide under the in... | 06/14/1977 |
| 3958875 | Apparatus for controlling slide projectors The invention uses frequency control of lamps and magazines in projectors and is especially adapted for programmed control by recording the frequency signals produced by previous rehearsal of the programme under manual control. The circuit uses an integra... | 05/25/1976 |
