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| Number | Title | Issue Date |
| 4864629 | Image correlation system A method and apparatus for controlling a parallel combination of correlation circuits which compare image pixels. A number of correlation circuits are provided, each having its own memory. The memories are loaded with image data with each memory being ass... | 09/05/1989 |
| 4849702 | Test period generator for automatic test equipment A timing subsystem 10 including several test period generators for supplying a variety of timing signals to a device under test. Major, minor, and free-run period generators each supply various timing signals to a multiplexer 18, which selectively connect... | 07/18/1989 |
| 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 |
| 4804979 | Single-pass color plotter A printer/plotter incorporates four individual microprocessor-based print stations, each for printing on a print media a separate color image for superimposition with one another, forming a final full-color image. The four print stations are located along... | 02/14/1989 |
| 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 |
| 4727269 | Temperature compensated sense amplifier A temperature compensated sense amplifier is connected to the sense node of a memory array which is OR tied to the bit lines of the array. A PNP current mirror supplies voltage independent controlled current to the sense node. A level shifting stage is co... | 02/23/1988 |
| 4712233 | Monolithic telephone subscriber line interface circuit The present invention is an improved subscriber line interface circuit which allows fast detection of an off-hook signal in the presence of a ringing signal during an answer mode while also permitting fast detection of dialing pulses during a calling mode... | 12/08/1987 |
| 4629997 | Amplifier active load The present invention is an improved active load which eliminates the current imbalance between the collectors of the emitter-coupled input transistors. The circuit includes a pair of first and second emitter-coupled transistors with their collectors coup... | 12/16/1986 |
