Patents by Inventor Eugene Dolgoff
Eugene Dolgoff has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7688347Abstract: A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each “pixel area” of the LCD and storage elements to store video signal data for each pixel, with optically shielded “dead spaces” between pixels to eliminate electric field cross-talk and non-information-bearing light bleed-through, is illuminated with a bright independent light source which creates a video image projected via specialized projection optics onto an internal or external screen without distortions, regardless of the angle of projection onto the screen. Use of heat sinks, IR reflective coatings, heat absorbing optics, optional fluid and a thermistor controlled pixel transistor bias voltage injection servo circuit stabilizes image performance, maintaining accurate color and contrast levels as the LCD changes temperature.Type: GrantFiled: April 3, 2002Date of Patent: March 30, 2010Inventor: Eugene Dolgoff
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Patent number: 7365908Abstract: A large-area display is composed of two or more adjacent panels, in which the overall display provides a consistent perception of depth (and/or other characteristics of the images) in all panels from each viewing position. This is accomplished by generating a first panel having a first repeating pattern in an arrangement of successive segments of the images, and generating a second panel to be displayed adjacent to the first panel, the second panel having a second repeating pattern in an arrangement of successive segments of the images that are in the same order as the first repeating pattern but starting at a different element of the repeating pattern from the first element of the first repeating pattern, and assembling the panels adjacent to each other, thereby allowing corresponding images to be displayed on the adjacent panels when viewed from a range of various view points.Type: GrantFiled: November 8, 2002Date of Patent: April 29, 2008Inventor: Eugene Dolgoff
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Patent number: 7016116Abstract: An image display system provides a viewer with an experience of three dimensional images by presenting a composite image source. The system includes first and second image sources, a beamcombiner, a lens and a reflective element. The reflective elements reflects the image of the second image source to the beamcombiner. The first and second image sources, the beamcombiner, and the single lens present a foreground image and a background image, with the background image presented at a greater distance from the viewer than the foreground image. The viewer perceives the foreground image and the background image as part of a scene having depth.Type: GrantFiled: October 29, 2001Date of Patent: March 21, 2006Inventor: Eugene Dolgoff
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Publication number: 20030107804Abstract: A large-area display is composed of two or more adjacent panels, in which the overall display provides a consistent perception of depth (and/or other characteristics of the images) in all panels from each viewing position. This is accomplished by generating a first panel having a first repeating pattern in an arrangement of successive segments of the images, and generating a second panel to be displayed adjacent to the first panel, the second panel having a second repeating pattern in an arrangement of successive segments of the images that are in the same order as the first repeating pattern but starting at a different element of the repeating pattern from the first element of the first repeating pattern, and assembling the panels adjacent to each other, thereby allowing corresponding images to be displayed on the adjacent panels when viewed from a range of various view points.Type: ApplicationFiled: November 8, 2002Publication date: June 12, 2003Inventor: Eugene Dolgoff
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Publication number: 20030076423Abstract: A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each “pixel area” of the LCD and storage elements to store video signal data for each pixel, with optically shielded “dead spaces” between pixels to eliminate electric field cross-talk and non-information-bearing light bleed-through, is illuminated with a bright independent light source which creates a video image projected via specialized projection optics onto an internal or external screen without distortions, regardless of the angle of projection onto the screen. Use of heat sinks, IR reflective coatings, heat absorbing optics, optional fluid and a thermistor controlled pixel transistor bias voltage injection servo circuit stabilizes image performance, maintaining accurate color and contrast levels as the LCD changes temperature.Type: ApplicationFiled: April 3, 2002Publication date: April 24, 2003Inventor: Eugene Dolgoff
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Publication number: 20020126396Abstract: An image display system provides a viewer with an experience of three dimensional images by presenting a composite image source. The system includes first and second image sources, a beamcombiner, a lens and a reflective element. The reflective elements reflects the image of the second image source to the beamcombiner. The first and second image sources, the beamcombiner, and the single lens present a foreground image and a background image, with the background image presented at a greater distance from the viewer than the foreground image. The viewer perceives the foreground image and the background image as part of a scene having depth.Type: ApplicationFiled: October 29, 2001Publication date: September 12, 2002Inventor: Eugene Dolgoff
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Patent number: 6392689Abstract: A system for displaying moving images from image information, e.g. on videotape or disk, in the form of a series of image frames to be displayed sequentially over a period of time. The image information does not contain stereoscopic information captured at the origin. As in conventional stereoscopic display, at any particular point in time, two image frames, A and B, are displayed simultaneously, one to each of the observer's eyes. However image frames A and B are generated from a single source of sequential image information. Image frame A is derived from a frame F1 and frame B is derived from a frame F2 of the series of source image frames. Frame F2 is positioned to be conventionally displayed after frame F1 by about 0.0167 and about 0.033 seconds.Type: GrantFiled: October 30, 1998Date of Patent: May 21, 2002Inventor: Eugene Dolgoff
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Patent number: 6310733Abstract: Improved optical elements having rises and faces, which may have annular or linear grooves, such as Fresnel spherical or cylindrical lenses, and methods of making them, are disclosed wherein an opaque coating is imparted to the rises by methods including positioning pre-printed opaque elements on a substrate such that when the optical element is pressed, stamped, embossed or molded from the substrate, rises of the completed element comprise said pre-printed opaque elements. A reflective element is made by imparting a reflective coating onto a substrate and then a non-reflective coating to the rises, e.g. by applying non-reflective material to the element and selectively cleaning it to leave a coat of non-reflective material adhering to the rises but not the faces. Photoresist, photographic emulsion, or ink may be used as the coating. Unwanted light may also be minimized by using circularly polarized light.Type: GrantFiled: December 31, 1996Date of Patent: October 30, 2001Inventor: Eugene Dolgoff
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Patent number: 5900982Abstract: A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each "pixel area" of the LCD and storage elements to store video signal data for each pixel, with optically shielded "dead spaces" between pixels to eliminate electric field cross-talk and non-information-bearing light bleed-through, is illuminated with a bright independent light source which creates a video image projected via specialized projection optics onto an internal or external screen without distortions, regardless of the angle of projection onto the screen. Use of heat sinks, IR reflective coatings, heat absorbing optics, optional fluid and a thermistor controlled pixel transistor bias voltage injection servo circuit stabilizes image performance, maintaining accurate color and contrast levels as the LCD changes temperature.Type: GrantFiled: November 3, 1997Date of Patent: May 4, 1999Assignee: Projectavision, Inc.Inventors: Eugene Dolgoff, Malcolm MacFarlane, Paul B. Christie
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Patent number: 5602679Abstract: A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each "pixel area" of the LCD and storage elements to store video signal data for each pixel, with optically shielded "dead spaces" between pixels to eliminate electric field cross-talk and non-information-bearing light bleed-through, is illuminated with a bright independent light source which creates a video image projected via specialized projection optics onto an internal or external screen without distortions, regardless of the angle of projection onto the screen. Use of heat sinks, IR reflective coatings, heat absorbing optics, optional fluid and a thermistor controlled pixel transistor bias voltage injection servo circuit stabilizes image performance, maintaining accurate color and contrast levels as the LCD changes temperature.Type: GrantFiled: February 6, 1995Date of Patent: February 11, 1997Assignee: Projectavision, Inc.Inventors: Eugene Dolgoff, Malcolm J. MacFarlane, Paul B. Christie
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Patent number: 5491585Abstract: A rear screen television cabinet, comprising a cabinet having front portions including a top, two sides and a front face, viewing surface on the front face, a mirror system comprising a plurality of mirrors for reflecting and successively enlarging and reflecting an incident beam onto the rear screen and a rear assembly which substantially closes said cabinet and is foldable or collapsible to render said cabinet portable, is disclosed. The cabinet's mirror system receives and successively enlarges and reflect an incident beam from a projector, to project a large image onto the viewing surface.Type: GrantFiled: April 7, 1994Date of Patent: February 13, 1996Assignee: Projectavision, Inc.Inventor: Eugene Dolgoff
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Patent number: 5300942Abstract: A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each "pixel area" of the LCD and storage elements to store video signal data for each pixel, with optically shielded "dead spaces" between pixels to eliminate electric field crosstalk and non-information-bearing light bleed through, is illuminated with a bright independent light source which creates a video image projected via specialized projection optics onto an internal or external screen without distortions, regardless of the angle of projection onto the screen. Use of heat sinks, IR reflective coatings, heat absorbing optics, optional fluid and a thermistor controlled pixel transistor bias voltage injection servo circuit stabilizes image performance, maintaining accurate color and contrast levels as the LCD changes temperature.Type: GrantFiled: February 21, 1991Date of Patent: April 5, 1994Assignee: Projectavision IncorporatedInventor: Eugene Dolgoff
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Patent number: 5012274Abstract: An active matrix LCD light valve between crossed polarizers, utilizing individual transistors to control each "pixel area" of the LCD and storage elements to store signal data for each pixel, with optically shielded "dead spaces" between pixels to eliminate electric field crosstalk and non-information-bearing light bleed through, is illuminated with a bright independent light source which creates a video image projected via specialized projection optics onto an internal or external screen without distortions, regardless of the angle of projection onto the screen. Use of heat sinks, IR reflective coatings, heat absorbing optics, optional fluid, and a thermistor controlled pixel transistor bias voltage injection servo circuit stabilizes image performance, maintaining accurate color and contrast levels as the LCD changes temperature.Type: GrantFiled: December 23, 1988Date of Patent: April 30, 1991Inventor: Eugene Dolgoff
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Patent number: D357474Type: GrantFiled: September 3, 1993Date of Patent: April 18, 1995Assignee: Eugene DolgoffInventor: Eugene Dolgoff
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Patent number: D357475Type: GrantFiled: September 3, 1993Date of Patent: April 18, 1995Assignee: Eugene DolgoffInventor: Eugene Dolgoff
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Patent number: D379978Type: GrantFiled: September 3, 1993Date of Patent: June 17, 1997Assignee: Projectavision, Inc.Inventor: Eugene Dolgoff