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This work proposes a newly developed optical design of a backlight module which, for the purpose of guiding sunlight from various directions into the backlight module, consists of a reflective concentrator panel, a micro lens array, a thin film acting as a light guide film (LGF). Normally, common mirrors only reflect a specific angle of light. Since the position of the sun varies over time, we designed...
High-performance analytical data processing systems often run on servers with large amounts of memory. A common data structure used in such environment is the hash tables. This paper focuses on investigating efficient parallel hash algorithms for processing large-scale data. Currently, hash tables on distributed architectures are accessed one key at a time by local or remote threads while shared-memory...
The performance of parallel distributed data management systems becomes increasingly important with the rise of Big Data. Parallel joins have been widely studied both in the parallel processing and the database communities. Nevertheless, most of the algorithms so far developed do not consider the data skew, which naturally exists in various applications. State of the art methods designed to handle...
The current-splitting architecture for the current-steering DAC can reduce the area of the current source array greatly. A background calibration technique for current-steering digital-to-analog (DAC) with the current-splitting array is presented. The proposed calibration technique can eliminate mismatch errors for both the upper bits array and the lower bits array in the background. A 14-bit current-steering...
A Nyquist-rate time-interleaved current-steering digital-to-analog converter (DAC) with dynamic channel matching (DCM) is proposed. Thanks to the proposed Nyquist-rate time-interleaved architecture, the DAC can properly operate at more than 1GS/s for a near-Nyquist output signal. The key limitation of the time-interleaved architecture is the mismatches between channels. The proposed DCM method can...
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