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| Number | Title | Issue Date |
| 4924506 | Method for directly measuring area and volume using binocular stereo vision A method for directly measuring the area of a topological surface with an arbitrary boundary shape lying in a fixed elevation different from a fixed surrounding surface elevation relies upon binocular stereo vision. Three stereo correlation measurements a... | 05/08/1990 |
| 4864160 | Timing signal generator A timing generator for generating timing signals representing the leading and trailing edges of test pulses. In one embodiment of the invention, a period circuit repetitively measures time intervals, or periods, based on signals from a clock circuit, and ... | 09/05/1989 |
| 4837521 | Delay line control system for automatic test equipment A system is disclosed which enables signals to be supplied at precisely desired times in an automatic test system. The apparatus includes a base delay memory which stores information representing the higher order bits of a time delay, while vernier memori... | 06/06/1989 |
| 4833631 | System for parameter identification of analog signals A system for determining the s-plane parameters, si and ri, of the transient response, ##EQU1## of a network-under-test (NUT). A filter bank, including N serially connected filter elements, has an input port and N output ports b... | 05/23/1989 |
| 4820944 | Method and apparatus for dynamically controlling the timing of signals in automatic test systems Apparatus for delaying an electrical signal includes a sequence of stages, each for delaying the signal. A coarser stage delays the signal by multiples of a predetermined fundamental delay interval and a finer stage provides for fine adjustment of the del... | 04/11/1989 |
| 4817175 | Video stream processing system A video stream processing system comprising a novel modular family of image processing and pattern recognition submodules, the submodules utilize a unique system signalling and interface protocol, and thus can be cascaded and paralleled to produce complex... | 03/28/1989 |
| 4800431 | Video stream processing frame buffer controller A video stream processing system frame buffer controller for controlling external dynamic random access memory (DRAM) of a frame buffer and interfacing to the video stream processing signal bus. The frame buffer controller has four interfaces, video input... | 01/24/1989 |
