| Patent Number |
Title Of Patent |
Date Issued |
| D316542 |
Computer keyboard |
April 30, 1991 |
|
| 5831601 |
Stylus position sensing and digital camera with a digital micromirror device |
November 3, 1998 |
| Disclosed is a digital micromirror device (DMD) based projector in which the position of a stylus with respect to a projected image can be determined automatically. In one embodiment, the stylus includes a detector capable of detecting illumination from a single pixel and the plurali |
| 5633691 |
Stylus position sensing and digital camera with a digital micromirror device |
May 27, 1997 |
| Disclosed is a digital micromirror device (DMD) based projector in which the position of a stylus with respect to a projected image can be determined automatically. In one embodiment, the stylus includes a detector capable of detecting illumination from a single pixel and the plurali |
| 5612736 |
Stylus position sensing and digital camera with a digital micromirror device |
March 18, 1997 |
| Disclosed is a digital micromirror device (DMD) based projector in which the position of a stylus with respect to a projected image can be determined automatically. In one embodiment, the stylus includes a detector capable of detecting illumination from a single pixel and the plurali |
| 5502514 |
Stylus position sensing and digital camera with a digital micromirror device |
March 26, 1996 |
| Disclosed is a digital micromirror device (DMD) based projector in which the position of a stylus with respect to a projected image can be determined automatically. In one embodiment, the stylus includes a detector capable of detecting illumination from a single pixel and the plurali |
| 5422693 |
Method and apparatus for interacting with a computer generated projected image |
June 6, 1995 |
| Disclosed is a method and apparatus for one or more operators to interact with a computer-controlled image projection-system. An operator-controlled radiation projector projects a beam of radiation which may be visible or invisible on the image created by the computer-controlled image pr |
| 5404185 |
Liquid crystal display for projection systems |
April 4, 1995 |
| Disclosed is a liquid crystal display unit comprising liquid twisted nematic liquid crystal material sandwiched between two polarizers. Transparent electrodes are provided on each side of the layer of liquid crystal for locally energizing liquid crystal material in the vicinity of tw |
| 5293540 |
Method and apparatus for merging independently generated internal video with external video |
March 8, 1994 |
| Disclosed is a method and apparatus for mixing internally generated or stored video with an external video and driving an LCD display device. External video is clocked into a dual port external frame store. Internal video is either internally generated or read from an internal mass store |
| 5257103 |
Method and apparatus for deinterlacing video inputs |
October 26, 1993 |
| Disclosed is a method and apparatus for converting interlaced input video to a sequential output compatible with sequential input display devices. The video input is digitized and decoded so as to provide separate luminance or chrominance information for each pixel to a line buffer m |
| 5255029 |
Liquid crystal display for projection systems |
October 19, 1993 |
| Disclosed is a liquid crystal display unit comprising liquid twisted nematic liquid crystal material sandwiched between two polarizers. Transparent electrodes are provided on each side of the layer of liquid crystal for locally energizing liquid crystal material in the vicinity of tw |
| 5235363 |
Method and apparatus for interacting with a computer generated projected image |
August 10, 1993 |
| Disclosed is a method and apparatus for one or more operators to interact with a computer-controlled image projection system. An operator-controlled radiation projector projects a beam of radiation which may be visible or invisible on the image created by the computer-controlled image pr |
| 5227821 |
Liquid crystal display for projection systems |
July 13, 1993 |
| Disclosed is a liquid crystal display unit comprising liquid twisted nematic liquid crystal material sandwiched between two polarizers. Transparent electrodes are provided on each side of the layer of liquid crystal for locally energizing liquid crystal material in the vicinity of tw |
| 5187510 |
Liquid crystal display for projection systems |
February 16, 1993 |
| Disclosed is a liquid crystal display unit comprising liquid twisted nematic liquid crystal material sandwiched between two polarizers. Transparent electrodes are provided on each side of the layer of liquid crystal for locally energizing liquid crystal material in the vicinity of tw |
| 5153621 |
Optical system for projecting multiple images in adjoining relation without illuminance disconti |
October 6, 1992 |
| The optical system projects discrete images in adjoining relation on a view screen to form a single image with substantial no illuminance discontinuity at the juncture of the images. A pair of afocal lenses split the light rays from a source for passage through segments of the lenses |
| 5150238 |
Active matrix LCD projection system with anti-reflective characteristics |
September 22, 1992 |
| The projection system includes a light source, a lens for focussing the light rays, an active matrix LCD panel disposed and spaced between a pair of glass panels and a lens and mirror system for projecting the LCD image onto an enlarged surface. To minimize, eliminate or attenuate ghosti |
| 4976536 |
Liquid crystal display for projection systems |
December 11, 1990 |
| Disclosed is a liquid crystal display unit comprising liquid twisted nematic liquid crystal material sandwiched between two polarizers. Transparent electrodes are provided on each side of the layer of liquid crystal for locally energizing liquid crystal material in the vicinity of tw |
| 4763993 |
Liquid crystal display for projection systems |
August 16, 1988 |
| Disclosed is a liquid crystal display unit comprising liquid twisted nematic liquid crystal material sandwiched between two polarizers. Transparent electrodes are provided on each side of the layer of liquid crystal for locally energizing liquid crystal material in the vicinity of tw |
