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| Number | Title | Issue Date |
| 5557342 | Video display apparatus for displaying a plurality of video signals having different scanning frequencies and a multi-screen display system using the video display apparatus A video display system that includes a housing has arranged thereon a plurality of video input terminals for receiving a plurality of video signals having different scanning frequencies. An expansion/compression processing circuit replaceably mounted on t... | 09/17/1996 |
| 5406334 | Apparatus and method for producing a zoomed image signal Apparatus and methods are provided for producing a zoomed image signal from an input image signal. The input image signal is separated into a number of block signals each representing a subarea of the input image. Class codes are produced based on the blo... | 04/11/1995 |
| 5255089 | Portable particle detector assembly A portable particle detector assembly for detecting particle contamination in the reaction chamber of a plasma processing tool used in semiconductor manufacture. The detector is comprised of a scanner assembly for providing a scanned laser beam and a vide... | 10/19/1993 |
