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"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 7375871 | Electrochromic glass control device A light control system having a full range of dimming for smart-glass by providing an interface between an off-the-shelf dimmer and a electrochromic glass device is disclosed herein. The light control system or electrochromic glass control device acts as an interfac... | 05/20/2008 |
| 7312914 | Electrochromic display device and electrodeposition-type display device Between each transparent pixel electrode driven by TFT as a drive device and a common electrode, a polymer layer located in contact with the transparent pixel electrode and electrically active to change in color by electrochemical oxidization or reduction and a poly... | 12/25/2007 |
| 6144479 | Low reflectivity contrast enhancement filter A low reflectivity, variable attenuation contrast enhancement filter having a total visible light reflectance of less than about 2.0% when measured with light incident to the first outer major surface. The contrast enhancement filter has a first layer(s) ... | 11/07/2000 |
| 4758818 | Switchable color filter and field sequential full color display system incorporating same A switchable color filter comprising a pair of twisted nematic liquid crystal devices (126 and 128) and a light polarizing system (108) which includes three color selective polarizing filters (102, 104, and 106) is incorporated as an optical subassembly i... | 07/19/1988 |
| 4758884 | Electronically switched field sequential color video display having parallel color inputs The invention uses a multiple beam cathode ray tube to write a television type raster, or frame, with the maximum data rate and writing speed reduced by a factor equal to the number of simultaneously operating beams. To overcome excessive slope in the pic... | 07/19/1988 |
| 4527189 | Color image pickup device The invention provides a color image pickup device in which image light from a white object to be photographed or image light integrated by a diffusion plate or the like is incident on a pickup tube through an electrochromic element. Two primary color sig... | 07/02/1985 |
| 4490739 | Color image reproducing apparatus A color image reproducing apparatus having particular utility as a color view finder for a color image pick-up apparatus includes a black and white cathode ray tube for producing a black and white image in response to red, green and blue primary color con... | 12/25/1984 |
| 4471351 | Switchable tandem memory magneto-optic display A magneto-optic display in which two closely spaced parallel memory chips are mounted together in a projection or direct viewing display device. Light passes through the chips in tandem, but the information on either one of the chips can be separately sel... | 09/11/1984 |
| 4003081 | Display systems with controlled color filtering A color display system, for example an electronic data display or a color television system incorporates a display screen, for example a cathode ray tube phosphor, and at least one liquid crystal color filter. The screen emits light in the form of visual ... | 01/11/1977 |
