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Scaling is used for wordlength reduction in many DSP algorithms. Variable scaler provides greater flexibility than fixed scaler and allows for more efficient utilization of the dynamic range. Programmable magnitude scaling is extremely difficult to perform in RNS, let alone scaling of signed integer. To the best of our knowledge, no programmable signed integer scaler in RNS has been reported. What...
In this paper, we propose a unified framework to perform progressive image restoration based on hybrid graph Laplacian regularized regression. We first construct a multi-scale representation of the target image by Laplacian pyramid, then progressively recover the degraded image in the scale space from coarse to fine so that the sharp edges and texture can be eventually recovered. On one hand, within...
This paper presents a fast and accurate steady state thermal simulator for heatsink and microfluid-cooled 3D-ICs. This model considers the thermal effect of TSVs at fine-granularity by calculating the anisotropic equivalent thermal conductances of a solid grid cell if TSVs are inserted. Entrance effect of microchannels is also investigated for accurate modeling of microfluidic cooling. The proposed...
In this paper, we presents a depth adjustment technique that controls depth of region of interest using scalable multiplexing in 3D display. Autostereoscopic displays offer different 3D images depending on the viewing direction. In order to display various viewpoint images on the autostereoscopic display at the same time, we usually divide the space of display panel spatially. This is called spatial...
We introduce a semi-real time autostereoscopic 3D video generation system using FPGA hardware and GPU processor. Proposed system consists of two major blocks. The first block is a disparity estimation block that is implemented on FPGA. In this block, we extract a disparity map of each frame from inputted stereoscopic video through the video capture board by DP (dynamic programming)-based stereo matching...
We design a solid phantom with painted tongue body as a simulation of human tongue and analyze the average color distance of the phantom images to evaluate the repeatability and reproducibility of this instrument. The color difference is applied as a tolerance of Precision-to-Tolerance ratio (P/T) in QS9000. The P/T ratio of total measurement is used to indicate whether the instrument is correctly...
High Speed Railway (HSR) is an environmental friendly green industry. With implementation of Medium-and-long Term Railway Network Plan, investment scale of railway construction in China expanded continuously. Other conditions kept constant, transportation volume increasing rate of High Speed Railway is lower than that of investment within certain period, which inevitably leads to the problem of railway...
As the rapid development of hardware and network technology, cloud computing has become an important research topic. For applications of large-scale data processing, such as data warehouse, Map Reduce is the most famous platform for parallel data processing in cloud computing. To support the star-join queries in data warehouse, Scatter-Gather-Merge (SGM) proposes an efficient algorithm on the Map...
This paper addresses the direct optimization of pipelined adder graphs (PAGs) for high speed multiple constant multiplication (MCM). The optimization opportunities are described and a definition of the pipelined multiple constant multiplication (PMCM) problem is given. It is shown that the PMCM problem is a generalization of the MCM problem with limited adder depth (AD). A novel algorithm to solve...
A novel non-iterative circuit for computing integer square root based on logarithm is proposed in the paper. Mitchell's methods are used for the logarithmic and antilogarithmic conversions. The proposed method merges two conversion stages into a single one to achieve better accuracy with a compact architecture. Hence, the circuit size and latency are reduced. Compared to an existing design based on...
This paper proposes a new watermarking scheme for intellectual property (IP) protection of sequential circuits. The method embeds the watermark by encoding the state variables as opposed to modifying the states and edges of state-transition graph (STG) in conventional finite state machine (FSM) watermarking schemes. It has the merits of being applicable to gate-level implementation of sequential circuit...
This paper is devoted to a highly sensitive GMI sensor, up to 0.3 nT, at low magnetic field. Sine wave with high frequency is selected as the ac current excitation to the amorphous wire, because it has the largest output signal among sine wave, pulse wave and triangular wave. The thermal magnetic fluctuation, which determines the sensitivity limit, is suppressed by current treating the amorphous wire...
A MEMS based high stability 32kHz oscillator for real time clock (RTC) for medical device application using 0.13μm CMOS technology is designed and simulated. This oscillator achieves a power consumption of less than 1μA with 10pF load capacitor, and a functional temperature drift of ± 80ppm with temperature range from −20°C to 60°C
This paper presents a novel gm-enhanced differential Colpitts voltage-control oscillator (VCO) that requires a lower start-up current. The central frequency is 1.8-GHz and the tuning range is about 15%. The tank inductors were designed with a quality factor of 9. The proposed gm-enhanced differential Colpitts VCO was compared with conventional cross-coupled VCO as well as differential Colpitts VCO,...
Adaptive algorithms can be an important component of a sparse reconfigurable adaptive filter (SRAF) for photonic switches. In this paper, we propose a modified system-based (MSB) algorithm that not only has good performance for white and non-white input signals, but also has a reduced computational complexity compared with conventional approaches such as the previous cross-correlation-based (CCB)...
In this paper, a new oscillator circuit for central pattern generator systems has been proposed. Switched-capacitor technique which enables controllable, more accurate and stable resistance has been used. Oscillation frequency can be easily controlled by the frequency of switching which is very useful for global change of oscillation frequency in an array of oscillators. SPICE simulation and dynamical...
This paper presents an improved non-ideal model of a switched-capacitor bandpass delta-sigma modulator with tunable resonators, noise-coupling and 4-bit quantizer. Considering operational amplifier non-ideal effect, clock jitter, noise, double-sampling and multi-bit quantizer capacitor mismatch effect, behavioral simulation in simulink shows that it provides 83.4dB, 67.5dB, 80.2dB, 41.0dB Signal-to-Noise-and-Distortion...
Vision-based perception has been explored as low-cost, flexible technology for industrial applications and ADAS. Its inherent flexibility presents a challenge quantifying performance and often even quantifying increases or decreases in system performance as conditions change. Experience enables designers to employ various ”rules of thumb” while commercially viable products require quantitative performance...
Here we demonstrate an optical microfiber refractive index sensor based on the localized surface plasmon resonance of gold nanoparticles. The size effect of gold nanoparticles, meaning larger gold nanoparticles have a longer resonance wavelength, is observed through such a platform. The microfiber is fabricated by fixed flame-drawing method and then coated with gold nanoparticles by chemical method...
Rescue forces decide the results of a rescue. We try to quantitatively study the rescue forces' influence on the result of the earthquake relief[1][2]. We build a model of post-earthquake emergency rescue system on the CAS theory and build a simulation model based on Swarm platform. And analyze the outputs of the simulation. Through the analysis, we find that in the rescue process, the number of rescuer...
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