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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7756424 | Optical CDMA communications system using OTDL device An optical code division multiple access communication system using a processor processes at least one collimated input beam which has been modulated with a data signal to produce multiple time-delayed output beams. The multiple time-delayed output beams are spatial... | 07/13/2010 |
| 7720226 | Private and secure optical communication system using an optical tapped delay line A method and apparatus for secure transmission of an information-containing optical signal. An optical signal is divided into a first plurality of sub-bands. Each of the sub-bands is modified to encrypt the information contained in the optical signal. The modified s... | 05/18/2010 |
| 7509048 | Method and apparatus for optical signal processing using an optical tapped delay line An Optical Tapped Delay Line (OTDL), which resolves multiple wavelength signals having extremely narrow wavelength spacing, is combined with other known optical devices to provide a wide variety of optical signal processing applications, including: multiplexing and ... | 03/24/2009 |
| 7062174 | Wavelength division multiplexing add-drop multiplexer using an optical tapped delay line An Optical Tapped Delay Line (OTDL) is combined with other known optical apparatuses to provide an add-drop multiplexer for a wavelength division multiplexing fiber optic network. Each output beam of the OTDL is spatially distinguishable in free space. This waveleng... | 06/13/2006 |
| 6608721 | Optical tapped delay line An OTDL device in accordance with the present invention is a method for and device for spatially resolving the wavelengths in an optical signal, i.e., channelizing or demultiplexing. The device is based on a tapped optical delay line.... | 08/19/2003 |
| 5751243 | Image synthesis using time sequential holography A method and apparatus for producing an image of a target area, by: at an observation location spaced from the target area, transmitting a beam of electromagnetic radiation toward the target area, and receiving reflections of the radiation from the target... | 05/12/1998 |
| 5736958 | Image synthesis using time sequential holography A method and apparatus for producing an image of a target area, by: at an observation location spaced from the target area, transmitting a beam of electromagnetic radiation toward the target area, and receiving reflections of the radiation from the target... | 04/07/1998 |
| 5623360 | Time delay beam formation Optical systems are disclosed which are capable of generating and rapidly changing time delays of electrical signals for true time delay beam formation and beam steering and for signal processing applications. The systems utilize an interferometer configu... | 04/22/1997 |
| 5390046 | Time delay beam formation Optical systems are disclosed which are capable of generating and rapidly changing time delays of electrical signals for true time delay beam formation and beam steering and for signal processing applications. The systems utilize an interferometer configu... | 02/14/1995 |
| 5384573 | Image synthesis using time sequential holography A method and apparatus for producing an image of a target area, by: at an observation location spaced from the target area, transmitting a beam of electromagnetic radiation toward the target area, and receiving reflections of the radiation from the target... | 01/24/1995 |
| 5079555 | Sequential image synthesizer A method and apparatus for producing an image of a target area, by: at an observation location spaced from the target area, transmitting a beam of electromagnetic radiation toward the target area, and receiving reflections of the radiation from the target... | 01/07/1992 |
| 4225938 | Time-integrating acousto-optical processors Disclosed are acousto-optical information processors employing a two-dimensional, time-integrating architecture. These three-product type processors are multi-purpose processors which can perform a variety of complex signal processing operations in two-di... | 09/30/1980 |
