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Digital images are distorted by a variety of processes. Thus we need objective image quality assessment (IQA) equivalent to subjective assessment. Several objective IQA methods have been proposed, and recently a combination method has been derived successfully. The combination technique is able to assess distorted images correctly. However, it is weak against Meanshift images. In this paper, we propose...
A FPGA-based embedded system development platform with dual-camera support, named MorFPGA Duo, is presented in this paper. The MorFPGA Duo platform adopts the modular design concept and is capable of a dual core employing the ARM Cortex A9, two channel SDI cameras with Full-HD resolution, versatile built-in peripherals and high expandability to satisfy users' eager needs for state-of-the-art research...
Ternary content addressable memory (TCAM) is generally used in the network router since it can perform the parallel IP lookup. However, the power consumption of traditional router is considerable. Particularly, the leakage power will increase as the technology feature size shrinks. In this paper, a TCAM architecture with mask vertical control (MVC) technique is proposed to reduce the leakage power...
This work describes the design of a transmitter for a 10 Gbps serial interface to be used in automotive Electronic Control Units. The data rate is chosen in order to assess the design challenges in automotive environment at this frequency. The focus will be mainly on challenges related to transistor level design using a standard 28 nm technology, nevertheless a system level overview will be also given...
This paper presents a novel circuit topology of the class-E rectifier by introducing the concept of the class-F rectifier into the basic class-E rectifier. In the proposed class-E rectifier, a harmonic component is added to the switching device of the basic class-E rectifier. Therefore, the proposed class-E rectifier possesses the strengths of both the class-E and -F rectifiers, enabling simple configuration,...
A front-end circuit with 16-channel 12-bit 100-kSps RC-hybrid successive approximation register (SAR) analog-to-digital converter (ADC) for industrial monitoring application is presented. The front-end circuit can process a wide range input voltage as large as 10 V which is beyond the supply voltage, with the help of voltage divider preceding an analog multiplexer. A programmable gain amplifier (PGA)...
To design high-resolution and high-speed current-steering digital-to-analog converter (DAC), both amplitude and timing mismatches should be minimized. In this paper, a dynamic mapping method based on the combination of magic-square-mapping (MSM) and random-segment-selection (RSS) is proposed to improve the performance of DAC. A design example of 12-bit 500-MS/s current-steering DAC is used to illustrate...
A theoretical analysis of constructing a reconfigurable TEG array is presented in this paper. All possible combinations of 2-TEG and 4-TEG arrays are investigated and the cause of intrinsic maximum power loss is analyzed for some combinations. Based on the analytic induction, an optimized and universal method to construct a reconfigurable TEG array using only resistive switch, and being expandable...
This paper introduces the ‘PnP Web Tag’, a new approach to integrating Internet of Things (IoT) devices with the World Wide Web (WWW) in order to realize the ‘Web of Things’ (WoT). For the first time, the PnP tag provides web developers with an extremely easy and yet systematic way of including sensor data and actuator controls in their web pages. Our approach is fully standards compliant and can...
With co-time co-frequency full duplex (CCFD) in 60 GHz band, self interference (SI) has different characteristics due to larger wireless path loss and beamformed system compared to current band under 6 GHz (normal band). In this paper, we present real SI channel measurement results and analysis to consider indoor CCFD in 60 GHz band. The results show that the narrow beam antennas can effectively suppress...
Adaptive beamforming outperforms its non-adaptive counterpart in that it is capable of achieving a narrower main lobe and suppressing interference. It, however, calls for intensive computations to obtain the weighting factors. In this paper, we present an MVDR (minimum variance directionless response) based adaptive beamformer design for ultrasound imaging and implement the design in an FPGA platform...
Rectifier circuits or power harvesters are a critical module in a variety of wireless sensors, radio frequency identification (RFID) tags, and Internet-of-Thing (IoT) devices relying on harvested power from radio waves. The threshold compensation circuit techniques have been proposed in the literature to improve the Power Conversion Efficiency (PCE) of CMOS-based rectifiers. However, these circuits...
The intelligence for home appliances becomes more and more necessary in recent years. It can be developed based on the techniques from intelligent surveillance systems, and integrated with video sensor. In this paper, we propose an implementation of intelligent home appliances. This system typically involves several tasks including foreground detection, noise reduction, object labeling, object recognition...
This paper proposes a compact spin transfer torque non-volatile flip-flop (STT-NVFF) design. The proposed NVFF adds four transistors and two complementary magnetic tunnel junctions (MTJs) over a standard volatile flip-flop with only 18% area overhead. The NVFF utilizes a low power/ fast switching MTJ that permits the elimination of the write circuitry existing in conventional STT-NVFFs. The proposed...
Single-image super-resolution is widely adopted for high resolution display related applications. Example learning-based approaches can provide plenty of image details by using trained dataset. Regression-based methods reduce the memory storage size by training mapping functions instead of using a huge dictionary. The reconstructed image quality can be further enhanced by combining various prediction...
In this paper, we propose an image target tracking algorithm for an embedded platform. Our proposed can process 1280 × 720 resolution video sequences and provide accurate image tracking in real time. In the tracking algorithm, an adaptive local edge detection method is employed to extract the feature pixels of a tracked object. To reduce tracking errors, a region-based local binary pattern feature...
In this work, fast algorithm-based multiple transforms with a hardware-sharing design are exploited for 4×4 and 8×8 forward transforms in H.264/AVC, VC-1, HEVC, and AVS standards, and for 8×8 forward transforms in MPEG-1/2/4 schemes. The 4×4 VP8 and AVS-M fast forward transforms are developed by cost-sharing hardware for multi-standard video encoding applications. By matrix factorizations, our proposed...
This paper presents a serial link transceiver (TRX) architecture that enables high-speed data transmission over a lossy backplane channel without the presence of equalization circuits. The proposed architecture employs multi-tone signaling to reduce inter-symbol interference (ISI) and to increase receiver (RX) timing margin. A single-sideband (SSB) modulation has also been employed for saving of required...
In this paper, we propose a new method for mitigating narrowband interference in Ultra-WideBand (UWB) communication systems based on Orthogonal Frequency Division Multiplexing (OFDM). Spreading data symbols to some subcarriers, the interference is effectively mitigated. However, the range to be spread for the interference is limited in conventional methods. In the proposed method, we widen more the...
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