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Full-Text Articles in Engineering
A Cmos Imager With Pfm/Pwm Based Analog-To-Digital Converter, Amine Bermak
A Cmos Imager With Pfm/Pwm Based Analog-To-Digital Converter, Amine Bermak
Research outputs pre 2011
An on-pixel analog-to-digital converter based on both PFM and PWM schemes is reported. The proposed architecture uses a limited number of transistors that can be implemented in a small silicon area resulting in a 23% fill-factor. The digital sensor can be externally configured in order to operate under either the PFM or PWM scheme. At high light intensities, the PFM scheme is replaced by the PWM scheme which proves to be much more efficient in terms of power consumption and clock frequency requirements. An in-built light adaptation mechanism has also been implemented which allows the sensor to better adapt to …
Image Capture Using Integrated 3d Softchip Technology, Stefan Lachowicz, Alexander Rassau, Geoffrey Alagoda, Kamran Eshraghian, Myung-Ok Lee, Seung-Min Lee
Image Capture Using Integrated 3d Softchip Technology, Stefan Lachowicz, Alexander Rassau, Geoffrey Alagoda, Kamran Eshraghian, Myung-Ok Lee, Seung-Min Lee
Research outputs pre 2011
Mobile multimedia communication has rapidly become a significant area of research and development. The processing requirements for the capture, conversion, compression, decompression, enhancement, display, etc. of high quality multimedia content places heavy demands even on current ULSI (ultra large scale integration) systems, particularly for mobile applications where area and power are primary considerations. The system presented is designed as a vertically integrated (3D) system comprising two distinct layers bonded together using indium bump technology. The top layer is a CMOS imaging array containing analog-to-digital converters, and a buffer memory. The bottom layer takes the form of a configurable array processor …
Applications Of Liquid Crystal Spatial Light Modulators In Optical Communications, Selam Ahderom, Mherdad Raisi, Kungmang Lo, Kamal E. Alameh, Rafie Mavaddat
Applications Of Liquid Crystal Spatial Light Modulators In Optical Communications, Selam Ahderom, Mherdad Raisi, Kungmang Lo, Kamal E. Alameh, Rafie Mavaddat
Research outputs pre 2011
Advances in liquid crystal (LC) materials and VLSI technology have enabled the development of multi-phase spatial light modulators (SLM) that can perform high-resolution, dynamic optical beam positioning as well as temporal and spatial beam shaping in the 1550 nm optical communication window. These attractive features can effectively be used to achieve optical switching, optical spectral equalization, tunable optical filtering and many other functions that are important for future reconfigurable optical telecommunication networks. We review potential optical telecommunication applications based on LC-SLMs.