Kniazev
Andrei Kniazev, Boulder, CO US
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20140172144 | System and Method for Determining Surface Defects - A method determines a defect on a surface of an object. A symmetric representation of at least part of the object is generated and a pair of unmatched areas between the surface of the object and a surface of the symmetric representation is determined. Next, the defect on the surface of the object is determined based on the pair of unmatched areas. | 06-19-2014 |
Andrei Kniazev, Cambridge, MA US
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20150192635 | Method for Analyzing Discrete Traps in Semiconductor Devices - A method analyzes traps in a semiconductor device by determining a first-order derivative of a signal representing an operation of the semiconductor device over time to produce a signal rate change. The traps in the semiconductor device are analyzed based on lifetimes corresponding to peaks of the signal rate change. | 07-09-2015 |
Serge Kniazev, Aurora CA
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20150135011 | REMOTE SHUTDOWN VIA FIBER - A system and method provide vital shutdown of a remote slave unit linked by a fiber optic connection to a local, checked redundant master unit with two paired computers. Each computer sends a life signal to an associated local vital supervision card (VSC) and copper to fiber converter (C/F converter) for transmission via fiber to a corresponding fiber to copper converter (F/C converter) on the slave unit, then to a corresponding remote VSC. Each local VSC controls power to a corresponding second local VSC-associated C/F converter, and each remote VSC controls power to a corresponding second remote VSC F/C converter. A VSC detecting an incorrect life signal signature removes power to the corresponding controlled converter and, optionally, to a respective local or remote I/O rack, thereby shutting down the slave unit. | 05-14-2015 |