Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7306341 | Multi-projector geometric calibration In one aspect, a first sequence of patterns of light symbols that spatio-temporally encode two-dimensional position information in a first projection plane is projected onto a scene. A second sequence of patterns of light symbols that spatio-temporally encode two-di... | 12/11/2007 |
| 6765566 | Method and apparatus for displaying volumetric 3D images This invention relates generally to new and improved methods and apparatus for displaying volumetric 3D images with colors and for barrier-free interaction with the 3D images. A raw 3D dataset is first processed into a viewable data with a geometry description in th... | 07/20/2004 |
| 6530662 | System and method for enhancing the realism of a displayed image A system and method for enhancing the realism of a displayed image may include an image display subsystem and a shadow projector. When an image is displayed, a shadow is projected near the image so that the shadow appears to be cast by the image. Shadows ... | 03/11/2003 |
| 6373552 | Optical correction plate, and its application in a lithographic projection apparatus A plate with substantially constant thickness is used to compensate for the residual distortion in the image projected by a high-quality projection lens for lithography. The two surfaces of the plate have an identical aspherical profile, whose shape has b... | 04/16/2002 |
| 4515450 | Transparency for use with a flying spot scanner to generate images A transparency that is used in a flying spot scanner to generate imagery for simulated flight contains a rectangular center section and eight peripheral sections, four of which lie along the side boundaries of the center section, while the remaining four ... | 05/07/1985 |
| 4482223 | Photogrammetrical rectification device and method of detecting the adjusting values for the same The invention relates to a photogrammetric rectifying device and a method for determining the setting values for the same to perform rectification. The inventional device has at least one measuring mark non-displaceably arranged within the projection beam... | 11/13/1984 |
