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In high-precision detector systems, the power supply usually need to be ultra-low noise and stabilized. Design and implementation of an ultra-low noise power supply is described in this paper. We implemented and tested the power system actually in a scientific CCD (Charge-coupled device) detector system, but the design structure could be used in many high-precision detector systems as infrared detector...
This paper presents a new concept of sigma-delta modulator (SDM) for biomedical applications. It combines switched-capacitor (SC) and switched-opamp (SOP) techniques. To Avoid signal distortion and nonlinear resistance in implementing the CMOS resistor of the SDM, an approach, replacing SC modulator with SOP modulator and reducing power consumption of the second-stage modulator, is utilized.
This paper presents a hybrid method for detecting and localizing texts in natural scene images by stroke segmentation, verification and grouping. To improve system performance, novelties on two aspects are proposed: 1) a scale-adaptive segmentation method is designed for extracting stroke candidates, and 2) a CRF model with pair-wise weight by local line fitting is designed for stroke verification...
Image denoising has been being a hotspot in the discipline of image processing. In this paper, we first analyze the intra-scale distribution and inter-scale distribution characteristics of the coefficients at finer-scale of the noise image, and then propose an edge detection method for preserving important high frequency information through incorporating the coefficients correlation of intra-scale...
Power delivery system noise, current and impedance are the key performance factors for successful chipsets/CPUs design. Power delivery noise is significantly affected by on-die impedance and current, i.e., on-die power grid equivalent resistance (Rdie), capacitance (Cdie), and Icc(t). Rdie and Cdie have been challenging in pre-silicon extraction and post-silicon measurement. This paper focuses on...
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