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Consumer Electronics (GCCE), 2012 IEEE 1st Global Conference on

Popular Articles (March 2015)

Includes the top 50 most frequently downloaded documents for this publication according to the most recent monthly usage statistics.
  • 1. The design and implementation of the BLDC motor drive for a washing machine

    Publication Year: 2012 , Page(s): 156 - 157
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (349 KB) |  | HTML iconHTML  

    This paper presents the brushless DC (BLDC) motor drive with direct torque control (DTC) for a washing machine over variable speed range. The system hardware and software programming are analyzed and designed. The flux controller and torque controller are derived and realized accordingly. A prototype of BLDC motor drive based on the DSP controller with DTC control is implemented and validated by the exhibition of waveforms measurement for currents, torque, flux linkage, and speed. The performance of the BLDC motor drive employing DTC is compared with that of BLDC utilizing the PI current control. The simulations are carried out prior to realization of the system implementation. The experimental results not only verify the feasibility of designed system but also demonstrate that BLDC with DTC control has superior characteristics than that with PI current control. View full abstract»

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  • 2. Fingernail detection in hand images using difference of nail-color pixels' density between vicinity areas of fingernails and skin

    Publication Year: 2012 , Page(s): 233 - 237
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (893 KB) |  | HTML iconHTML  

    No research group has developed practical “fingernail detection” technologies in hand images including palm areas and/or wrist rotation angles, because the human palm has the similar color with fingernail areas. We propose in this paper a new and practical fingernail detection method, using the differences in nail-color pixels' density between vicinity areas of fingernails and skin. Experimental results showed that our system practically works in fingernail detection in hand images at least 80 percent of correction, even though users rotate their hands from -90 to -40 degrees and from 40 to 90 degrees, i.e. excepting that hand is not facing upward or downward. View full abstract»

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  • 3. Kadecot: HTML5-based visual novels development system for smart homes

    Publication Year: 2012 , Page(s): 17 - 19
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (871 KB) |  | HTML iconHTML  

    We introduce the Kadecot system, which allows visual novel (anime-styled story games) developers to develop easily HTML5-based contents that simultaneously control home network appliances to enhance the atmosphere of a story. Our system consists of 1) a script system to simplify event handling of devices and effects in games, 2) a device manager that dynamically downloads driver modules from the Web, and 3) nickname-based matching between content requirement and real devices. We developed several game contents that communicate with real smart homes. View full abstract»

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  • 4. Mobile and multi-device interactive panorama video distribution system

    Publication Year: 2012 , Page(s): 574 - 578
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (611 KB) |  | HTML iconHTML  

    Distribution of reality of the event site through broadband network is expected for a future video service. We propose video distribution system for providing such a realistic user experience in the mobile and home environments, upon recent trends of wireless broadband network LTE and Wi-Fi, and multi-touch wide screen mobile terminal. In the system the user can see high quality video of the expected area within the huge panorama video which represents the whole scene while moving and zooming in interactively the viewing area under limited bandwidth of wireless network. In addition, multi-device video streaming to the TV terminal and mobile terminal is supported. The user can experience more sensational interactive viewing with more high quality video and sound while keeping stress-free multi-touch interface to control the viewing area. View full abstract»

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  • 5. Optimal path planning incorporating global and local search for mobile robots

    Publication Year: 2012 , Page(s): 668 - 671
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (323 KB) |  | HTML iconHTML  

    This paper proposes an optimal path planning algorithm incorporating a global and local search mechanism for mobile robots. The global path planning is based on Voronoi graph to establish a backbone path for the map with significantly reduced nodes for the original grid map. With the use of the backbone path, the D* algorithm is adopted to determine a shortest path between the starting and end points. Taking advantages of the D* algorithm and Voronoi graph, the proposed optimal path planning algorithm is capable of obtaining a desired path for the mobile robot, overcoming the efficiency problem while maintaining maximum safety distance from the obstacles when the mobile robot navigates in the environment. Simulation results have confirmed the feasibility of the proposed algorithm for practical use in the real-world environment. View full abstract»

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  • 6. Development of a dual communication system LSI

    Publication Year: 2012 , Page(s): 347 - 349
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (309 KB) |  | HTML iconHTML  

    Recently, wired and wireless communication functions have been installed on Smart Grids and Smart Meters. In consideration of required specifications, performance and cost, however, wired communication functions are normally chosen from among available wired systems while the wireless communication functions from among available wireless systems. MegaChips Corporation is now developing BlueChip as a dual communication system LSI that combines wireless and wired communication media into a mutual complementary network [1],[2]. BlueChip for wireless communication uses 920 MHz frequency radio band specified by IEEE 802.15.4g/e, while a newly developed electric power line communication that operates on the OFDM modulation system on a low frequency band of 450 KHz is installed for wired communication. This paper discusses the aim, specifications, performance and other details related to LSI development. View full abstract»

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  • 7. In-air Typing Interface: Realizing 3D operation for mobile devices

    Publication Year: 2012 , Page(s): 223 - 227
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2459 KB) |  | HTML iconHTML  

    In this paper, we explore the usability of the “In-air Typing Interface” that we developed to overcome the problems common with traditional mobile interfaces. We performed two studies focused on frame rate, latency, and tactile feedback. We found that reducing the latency even by several milliseconds can improve the operating efficiency, and the frame rate partly affects the efficiency. Tactile feedback significantly reduced the number of mistypes, and it is likely that vibration feedback can improve the operating efficiency further if there is a penalty for erroneous operations. View full abstract»

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  • 8. ESD robustness of low-voltage/high-speed TVS devices with epitaxial grown films

    Publication Year: 2012 , Page(s): 189 - 192
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2130 KB) |  | HTML iconHTML  

    A transient voltage suppression (TVS) diode with abrupt junctions has been developed using the low-temperature epitaxy and process technology. The triggering voltage at 6 V could be precisely controlled by the thickness and dopant concentration. The reliability of TVS device is confirmed based on its electrostatic discharge (ESD) strength in conjunction with the transmission line pulse (TLP) test. As a result, the device could exceed 28 A TLP, ±8 kV MM, and could withstand IEC 61000-4-2 up to ±19kV. Moreover, TVS diode exhibited very low leakage current, small capacitance, fast respond time and high cut off frequency of 2nA, 60 pF, 8 ps, and 52 MHz, respectively. TVS diode can be also used for a digital communication line as well as an ESD/EMI filter attenuating the RF noise in MHz range. View full abstract»

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  • 9. Production of body model for education of dance by measurement active quantity

    Publication Year: 2012 , Page(s): 212 - 216
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1880 KB) |  | HTML iconHTML  

    This study makes a body model for education of dance how lively a dance trainer moves his/her body so that the dance student can learn dance from the dance trainer who is in the distant place through communication line in virtual dance studio. In late years, network game gives the virtual space enjoying sports, music, and dance to plural people who are in the remote place at the same time. However, the general network game has to attach sensors or devices to the body of the players to input livingness by the movement of them. Therefore, not only they feel botheration in the player attaching sensors or devices, but also it is necessary to spend labor and time to attach sensors or devices to the body. This study proposes Active Quantity to measure with quantity from 0.0 to 1.0 from a dynamic image which photographed the movement of the dance trainer in digital video camera. Furthermore, the proposal method makes the body model that put the silhouette of the dance trainer and Active Quantity together so that the dance students are easy to understand the movement of the dance trainer from sight. View full abstract»

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  • 10. A framework for context-aware power management on embedded devices

    Publication Year: 2012 , Page(s): 588 - 592
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (898 KB) |  | HTML iconHTML  

    Power management for modern embedded devices is not a simple task, because its scope is not limited to simple system-level control, but needs to consider device and application status as well. In addition, as the desired power control behavior varies from product to product, the same software often become unreusable for other embedded systems. In order to solve this problem, we propose a framework for context-aware power management on embedded devices. Our framework is made up of policy definitions and a mechanism to handle that policy. By defining the power management policies suitable for each product, programmers can intuitively realize the requested power management behavior without going into the details of its mechanisms. We have evaluated our framework by applying it to a practical system, through which we confirmed that our framework can realize fine-grained power management on practical embedded systems through intuitive policy descriptions. View full abstract»

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  • 11. Fingerprinting method using invariant offset huffman code length feature

    Publication Year: 2012 , Page(s): 661 - 665
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1053 KB) |  | HTML iconHTML  

    This paper describes an experimental system integration of Digital Rights Management (DRM) architecture and fingerprinting which is composed of an incomplete cryptography scheme using invariant offset huffman code length feature and the user identification mechanism to control the quality of the digital contents. We adopt the AC-coefficent huffman code length feature of the DCT coefficient in the JPEG codec to the implement incomplete cryptography. In the our scheme, the copyright information is embedded into the decoded content while decoding process, and the size of digital contents are invariant in the whole process. Experimental results with simulation confirmed that the modified codes keep compatibility with standard JPEG format, and revealed the proposed method is suitable for DRM in the network distribution system. View full abstract»

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  • 12. Using an adaptive iterative learning algorithm for planning of the path of an autonomous robotic vacuum cleaner

    Publication Year: 2012 , Page(s): 401 - 405
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1079 KB) |  | HTML iconHTML  

    In this paper we propose the design of an autonomous robotic vacuum cleaner by using three-dimensional vector coordinates to guide its path. Our design is fully adapted to planning an effective mode for completing the cleaning task in an unknown environment. In addition we propose a dynamic return path for recharging, including the relative coordinates of the record starting point and the current position. The cleaner calculates the distance from the location of the base and then plans the return path. View full abstract»

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  • 13. Real-time image processing system by using FPGA for service robots

    Publication Year: 2012 , Page(s): 720 - 723
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3425 KB) |  | HTML iconHTML  

    This paper presents a real-time image processing system for a mobile service robot which is implemented by an FPGA reconfigurable logic device. The digital image processing acquired by a CMOS image sensor is performed on the embedded FPGA board and Linux-based real-time video communication module. The integrated robot vision system aims to achieve a suitable platform available from both hardware and software. In addition, we also present spatial recognition by edge detection and tracking function of moving objects by using the frame difference method which is necessary for autonomous mobile robots. View full abstract»

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  • 14. SASEBO-GIII: A hardware security evaluation board equipped with a 28-nm FPGA

    Publication Year: 2012 , Page(s): 657 - 660
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1779 KB) |  | HTML iconHTML  

    The SASEBO-GIII board equipped with a 28-nm FPGA was developed for security evaluation against side-channel attacks (SCAs) and various other threats. SCAs are performed to extract a secret key inside a cryptographic module by analyzing its power consumption, electromagnetic radiation and other physical parameters. Since an increasing number of current consumer electronic devices provide hardware-accelerated cryptographic functionality for data encryption, device authentication, and so forth, SCAs are considered to be a serious problem in the electronics market. While previous SASEBO models mainly target SCA evaluation of a single cryptographic core, they are nevertheless insufficient for testing the security of integrated systems that consist of any combination of cryptographic, network, control and other modules. Providing high processing power with the latest Kintex-7 FPGA and considerable expandability with ANSI-standard FMC connectors, SASEBO-GIII is suitable for prototyping a wide variety of systems, such as home information appliances, content distribution systems and dynamic partial reconfiguration (DPR) systems, and offers a convenient environment for studying security issues in such integrated systems, for example, hardware trojans and counterfeit electronics. The configuration of the Kintex-7 FPGA is controlled by the other FPGA (Spartan-6), and therefore a user can verify the security of various types of device configuration processes, for example, DPR through ICAP or SelectMAP interfaces as well as though standard configuration interfaces such as BPI and JTAG. This paper presents the detailed architecture and features of SASEBO-GIII, and shows the results of an electromagnetic SCA attack against the standard AES block cipher implemented on the Kintex-7 FPGA. View full abstract»

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  • 15. Range-based algorithm for posture classification and fall-down detection in smart homecare system

    Publication Year: 2012 , Page(s): 243 - 247
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (981 KB) |  | HTML iconHTML  

    Human posture classification is one of the most challenging issues in smart homecare system. To achieve high classification accuracy, we propose a new algorithm, called range-based algorithm. In this paper, a range means the distance between body parts. The ranges between body parts are investigated to classify the human posture and to detect a possible fall-down accident. Furthermore, we also proposed an adaptive posture window scheme to recognize the human posture in real-time even though human change the posture in different speed. The results reveal that our proposed can classify the human posture and detect fall-down with high accuracy and reliability. View full abstract»

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  • 16. Robust global motion estimation for video stabilization

    Publication Year: 2012 , Page(s): 623 - 624
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (168 KB) |  | HTML iconHTML  

    Global motion estimation is an important task for video stabilization. Since the global motion is heavily related to the motion of the background (BG), the moving foreground (FG) objects can cause inaccurate global motion estimation. In this paper, we propose a robust global motion estimation method for video stabilization. The proposed method iteratively finds the feature points (FPs) in the BG and estimates the global motion using the BG FPs. The experimental results show that the proposed method can estimate the global motion even when the moving FG objects occupy a large part of image. View full abstract»

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  • 17. Home LED light control system with automatic brightness tuning for the difference in luminous decay

    Publication Year: 2012 , Page(s): 256 - 260
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (579 KB) |  | HTML iconHTML  

    In this paper we present a design at the software and hardware modules of an embedded board with a sensor and an interface circuit both to control home LED lighting appliances and to avoid their difference in brightness caused by luminous decay. Our design is divided into three parts: an automatically adjusted LED driver, environment illumination detection and a wireless remote control unit. View full abstract»

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  • 18. Image denoising via nonlocal means with noise-robust similarity

    Publication Year: 2012 , Page(s): 286 - 287
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (418 KB) |  | HTML iconHTML  

    We propose an effective image denoising method by revising the conventional “nonlocal means (NL-means)” method. Conventional NL-means replaces a noisy pixel by the weighted average of other reference pixels depending on the similarity between local neighborhoods of target pixel and reference pixels. Noise, however, reduces the similarity even within the same pattern blocks. This is due to the weighted average of dissimilar blocks of pixels, which makes the result image blurred or irregular. Hence, our proposal is to calculate the similarity with the combination of basis patterns correlated statistically with little noise through principal component analysis making use of local structures that have low correlation with incurred noise. The first step is to exclude the local structures of the given image whose statistical correlation with the original images is slight. The second step is to exclude basis patterns whose correlation with the target blocks is slight. Making use of the selected basis patterns, we can calculate the similarity robust to any noise. Consequently, high-quality images can be obtained. Comparing with other methods, our experiments show our method denoises effectively without causing any blur or irregularity. View full abstract»

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  • 19. A study of gesture recognition using smartphone sensors

    Publication Year: 2012 , Page(s): 323 - 324
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (259 KB) |  | HTML iconHTML  

    This paper propose a novel method for gesture recognition between people using smartphones and we examine each other's gesture recognition. View full abstract»

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  • 20. Input impedance characteristics of wearable transmitter electrodes for intra-body communication

    Publication Year: 2012 , Page(s): 362 - 363
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (484 KB) |  | HTML iconHTML  

    Intra-body communication draws attention as a promising wireless technology in order to materialize wireless body-centric networks. An electrode in intra-body communication system is a key device since the electrodes are analogous to antennas in airborne wireless communication system. However, nobody has addressed the broadband input impedance characteristics of the electrodes although there are a few study reports discussing them at one single frequency. In this paper, the input impedance characteristics of the wearable transmitter electrodes in the frequency range of 500 kHz to 1 GHz, and the electromagnetic field distributions around and inside the human arm at the frequency of 10 MHz were investigated. As a result, both magnitudes of the resistive and reactive components of the input impedance increased as frequency increased below 200 MHz. Further, it was also found that the electric field was strongly distributed only the vicinity of the human arm with a transmitter. It could be advantageous in the view points of the high-secured communication and the electromagnetic compatibility (EMC). View full abstract»

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  • 21. iVision based Context-Aware Smart Home system

    Publication Year: 2012 , Page(s): 542 - 546
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (380 KB) |  | HTML iconHTML  

    Ultimate goal of ubiquitous computing is to move computers away from the user's focus, by embedding them into the environment. The user will be surrounded by smart and internet powered devices. In this work we describe our research about the Smart Home system. Our solution contains all sorts of smart entities necessary at home. For the interaction with the user we defined two outputs: Smart Wall and Smart TV, and one input: iVision. iVision system is designed and implemented on SoC (System on Chip), to get higher performance, and less latency. Smart home appliances are implemented based on DPWS (Device Profile for Web Services). Additionally Context-Awareness driven architecture was suggested, to improve the quality of the service in a Smart Home system. View full abstract»

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  • 22. Pedestrian dead-reckoning unit for navigation system using mobile device

    Publication Year: 2012 , Page(s): 530 - 534
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (587 KB) |  | HTML iconHTML  

    This paper describes a novel pedestrian dead-reckoning unit (PDU) to estimate pedestrian's position. The PDU is designed for a narrow bandwidth wireless communication channel such as Bluetooth. The PDU sends not only the PDU posture, but also the abstracted sensor data such as the number of steps, basic information to estimate stride length, and the pedestrian contexts. We developed the pedestrian navigation system by using the proposed PDU. This paper shows the PDU message is compact but contains enough data to realize pedestrian navigation system using Bluetooth. View full abstract»

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  • 23. Seamless transmission management control based on geocast-based inter-vehicle communications

    Publication Year: 2012 , Page(s): 163 - 165
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (652 KB) |  | HTML iconHTML  

    After several years of development, Vehicular ad hoc Networks (VANETs) are now an emerging Telematics environment. Applications have been studied in many fields, including fleet management, vehicle tracking, and driver warming systems. This study proposes a seamless fleet transmission management control mechanism for VANETs. The proposed fleet management process, defined the fleet area by dynamic geocast region, and offers seamless steady inter-vehicle communication according to one-way freeway conditions and vehicle status, including velocity and transmission distance. For in inter-vehicle communication, the conventional defer time algorithm was modified to reduce the problem of frequent network fragmentation and to predict when vehicles are within transmission range and to discovery, new relay vehicles before network fragmentation occurs. The proposed transmission management system provides reliable inter-vehicle communication for a dynamic fleet. View full abstract»

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  • 24. Full-Flat keyboard light optimized for Edge-to-Edge flat glass screen

    Publication Year: 2012 , Page(s): 299 - 303
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1626 KB) |  | HTML iconHTML  

    Conventional Keyboard-Light which is implemented at upper LCD area, has overhanging shape in order to light keyboard effectively, but the overhanging shape is not suitable for Edge-to-Edge flat glass surface screen which is adopted for recent Design-Centric Notebook PC. We developed Keyboard-Light which is optimized optically for Edge-to-Edge flat glass surface screen, and has Full-Flat shape which is unified physically with glass surface screen. View full abstract»

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  • 25. A profile-driven dynamic application offloading scheme for Android systems

    Publication Year: 2012 , Page(s): 540 - 541
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (522 KB) |  | HTML iconHTML  

    Smart mobile devices, such as smartphones and tablets, are gaining strong demands recently with the advances in processors, memories, storages, communication networks, and software applications. However, due to their limited form factors and battery capacities, the current generation of smart mobile devices cannot yet fulfill the requirements of sophisticated applications. Leveraging a cloud service to offload the application workload can potentially overcome these limitations. In the paper, we enhance our previous works on mobile-cloud computing by extending the programming model on Android smartphones with a flow-based programming paradigm to provide more flexibility for application migration. For properly provisioning the resources and making smart decisions based on the performance gain, we add a profile-based policy manager and profiling service into our framework to enable a dynamic offload scheme. View full abstract»

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  • 26. Fighting game skill evaluation method using surface EMG signal

    Publication Year: 2012 , Page(s): 106 - 107
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (202 KB) |  | HTML iconHTML  

    Fighting game is one of the video games which 2 players fighting in screen by controlling characters. While skilled fighting game players are perceived to have great reflex or judgment like chess players, there is no precise skill evaluation method. In this paper, we suggested surface EMG signal as fighting game skill evaluation method. In the experiment, we divide 10 subjects into skilled group and unskilled group by inputting trial. Furthermore, we measured EMG of their left arms and derived average rectified value. As a result, there were no significant difference of input power, but were input timing between 2 groups. View full abstract»

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  • 27. Assistive independent living for senior citizens with special cognitive needs

    Publication Year: 2012 , Page(s): 448 - 449
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (195 KB) |  | HTML iconHTML  

    Population aging is a growing issue for many metropolitan cities. With the proven effectiveness of assistive technology for elderly care, a smart home healthcare system that utilizes assistive technology would facilitate independent living for senior citizens with cognitive impairment living alone. The main objective of the proposed system is to provide patients with a point-of-care solution with minimal user intervention while reducing the demand for public healthcare services. View full abstract»

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  • 28. LTE RF subsystem power consumption modeling

    Publication Year: 2012 , Page(s): 645 - 649
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (363 KB) |  | HTML iconHTML  

    This paper presents a new power consumption emulation model, for all possible scenarios of the RF subsystem, when transmitting a LTE signal. The model takes the logical interface parameters, Tx power, carrier frequency and bandwidth between the baseband and RF subsystem as inputs to compute the power consumption. An analysis of modeling approaches was conducted and the modeling approach with the least sum of squared errors is used to compute the emulation model. The neural networks applying the Pseudo-Gauss Newton algorithm for optimization proved to have the least sum of squared errors. This approach was validated against a real life scenario with a relative error of 5.77%. View full abstract»

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  • 29. Lane departure warning system based on dynamic vanishing point adjustment

    Publication Year: 2012 , Page(s): 25 - 28
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2822 KB) |  | HTML iconHTML  

    A fast lane departure warning system which realized in embedded system is presented in this paper. Based on small process area of image and Nearest Near Peak (NNP), the lane-marking detection and tracking process can extract lane-marking pattern fast. Further, the dynamic vanishing point is employed to fine-tuning both of sides for lane-marking results. Finally, the departure alarm is active when the vehicle departs from its lane. In experiment, several senses are considered to challenge the proposed system, the results show that it has well correct rate of warning alarm, and robust enough to perform in real driving environment. View full abstract»

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  • 30. Suggestion for simple home network

    Publication Year: 2012 , Page(s): 741 - 745
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (433 KB) |  | HTML iconHTML  

    Home automation and home network have been proposed more than 20 years. However they were not spread as widely as expected. After the Tohoku Earthquake in Japan, the smart grid, smart home has been focused for the purpose of reducing power consumption. In this paper, we would like to suggest a new type home network for power-saving. The basic idea for this network is to connect all of electrical appliance in home into a network and show an estimation of the power consumption on TV screen. To do this, we used a basic network unit named as Mutual Complement Network, and connected this unit in two layers structure. Also we proposed to display the power consumption of whole house on TV screen via a TV converter. Furthermore, we use a remote unit, which parameters are able to be adjusted according to electricity rate of the electrical power company. We believe that these measures are effective not only for convenience of power-saving, but also for reminding power-saving consciousness of people. View full abstract»

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  • 31. FPGA implementation of low-profile wake-up radio receiver for Wireless Sensor Networks

    Publication Year: 2012 , Page(s): 20 - 24
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (562 KB) |  | HTML iconHTML  

    Achieving low power consumption, size reduction, increased efficiency, and space optimization are all challenges in Wireless Sensor Networks (WSNs). WSNs use duty cycle to improve its power efficiency, and wake-up radio (WUR) is used as a control channel to wake up WSN nodes. With its highly flexible features, a field-programmable gate array (FPGA) is one of the attractive candidates for implementing part of WSN devices, and previous works have demonstrated its suitability. In this work, we propose a low-profile WUR scheme and implemented its receiver components using FPGA. The low-profile WUR wakes up the rest of the WUR module of the recipient node only and eliminate unnecessary WUR-module activation of non-recipient nodes. Experimental results of implementing module show that the proposed solution can significantly eliminate unnecessary power consumption. View full abstract»

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  • 32. Stereoscopic depth perception measurement for 2D/3D converted contents

    Publication Year: 2012 , Page(s): 498 - 501
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (953 KB) |  | HTML iconHTML  

    Owing to the development of 3D industry, the number of 3D contents is growing. However, there does not exist yet a clear, precise criterion to objectively evaluate the quality of these contents. In this paper, we propose a method to measure, among 2D-plus-Depth image quality measure factors, the stereoscopic depth perception. To measure the variety of depth values and the amount of depth-perceived objects, which are assumed to be depth perception-related, we propose two methods, which are based on the histogram and gradient of depth image, respectively. Experimental results show that the proposed methods can accurately estimate depth perception quality. View full abstract»

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  • 33. A gesture-based remote control for finger disabled people

    Publication Year: 2012 , Page(s): 406 - 410
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (834 KB) |  | HTML iconHTML  

    A remote control is presented that enables finger disabled people to easily control various types of devices and appliances. It uses an Android smartphone, a Bluetooth/infrared conversion unit, and user gestures. Experimental evaluation demonstrated that it is easily usable by non-disabled people, except for the electronic program guide function. View full abstract»

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  • 34. A novel AR marker for high-accuracy stable image overlay

    Publication Year: 2012 , Page(s): 217 - 218
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (497 KB) |  | HTML iconHTML  

    We developed a novel AR marker which overcomes the biggest problem of conventional AR markers that the accuracy of pose estimation gets worse in frontal observation. We utilize a 2-D moiré pattern which is generated by a microlens array and seems to move according to the visual-line angle. We can extract pose information from the pattern by image processing. The pose accuracy of the marker is less than 1[deg] even in frontal observation. This novel AR marker will be useful in various applications such as measurement, robotics, and AR needing more accurate and stable image overlay. View full abstract»

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  • 35. Vehicles detection based on extremas in nighttime driving scene

    Publication Year: 2012 , Page(s): 679 - 682
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (946 KB) |  | HTML iconHTML  

    The purpose of this study is to identify vehicles by detecting lights based on extremas in nighttime. This method has focused on headlights of vehicle that are high brightness and taillights of vehicle that are red in nighttime. Headlights are detected by grayscale images, and taillights are detected by red extracted images. In fact, The usefulness of this method is confirmed by using in-vehicle camera images. View full abstract»

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  • 36. Design of a low cost interactive digital signage

    Publication Year: 2012 , Page(s): 120 - 124
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (482 KB) |  | HTML iconHTML  

    In this paper, we propose an Interactive Digital Signage (IDS) which consists of three parts: passive infrared sensor (PIR), ultrasonic sensors and an embedded system. Our system uses the Newton-Raphson method to acquire the hand moving directions and distances, which were transferred to relative command to control the system. Compared with other interactive devices, we use low cost sensors instead of cameras to approach the audience motion capture. Therefore, the IDS not only supports interaction ability but also decreases hardware and software cost to implement it. View full abstract»

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  • 37. A dual-application low-power FFT processor for WLAN-integrated SD-OCT systems

    Publication Year: 2012 , Page(s): 457 - 460
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (853 KB) |  | HTML iconHTML  

    This paper presents a dual-application FFT processor for spectral domain optical coherence tomography (SD-OCT) systems integrated with a wireless local area networking (WLAN) module. A high-radix multimode FFT kernel together with the four-path memory-data access scheme is proposed to improve the hardware efficiency. By the proposed memory-based architecture, multimode 2048/1024-point FFT×2 (for SD-OCT) or 128/64-point FFT×4 (for WLAN) can be performed in an energy-efficient manner. A test chip has been designed using a TSMC 0.18μm process with a core area of 4.12 mm2. Through post-layout simulation, the power consumption is 69.2 mW and 72.7 mW at 40 MHz for OCT/2048-point FFT×2 and WLAN/128-point FFT×4 modes, respectively. Compared to the referred, the power saving of 26%~53% can be achieved using the proposed design. View full abstract»

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  • 38. Power consumption monitoring and visualizing system for the effective use of photovoltaic power generation in households

    Publication Year: 2012 , Page(s): 34 - 38
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (511 KB) |  | HTML iconHTML  

    The continuous balancing of energy demand and supply is a fundamental prerequisite for the stability of energy grids. Photovoltaic power generation (PV) is one of the key components. Therefore, it is important to know 1) in what way and how much electricity can be generated by PV at real-time, and 2) how households' behavior can be changed by displaying their power generation and consumption with a web browser for future demand forecast. For this purpose, we monitored and created electricity generation and consumption data in households. View full abstract»

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  • 39. User interfaces with 3DCG system

    Publication Year: 2012 , Page(s): 219 - 222
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (593 KB) |  | HTML iconHTML  

    In the national Japanese junior high school mathematics curriculum, students are required to understand the number of sides and vertices on regular polyhedrons. In the case of regular polyhedrons having 12 or more sides, it was found that improvement in the existing classroom technology was possible. We surveyed and evaluated solutions using recently available Augmented Reality (AR) and Mixed Reality (MR) technology for application in the junior high math classroom. The preliminary result shows that interactive 3DCG using AR is effective for learners of concepts in platonic solids. View full abstract»

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  • 40. An object-based audio rendering system using spatial parameters

    Publication Year: 2012 , Page(s): 687 - 688
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (462 KB) |  | HTML iconHTML  

    In this paper, we propose an object-based audio rendering system, in which the audio signal of each object is distributed to multi-channel systems by spatial parameters. The operation of the rendering system is based on the sound localization theories with the Parametric Stereo (PS) coding structure. The performance of the audio surround effect of a sound moving object is evaluated by subjective listening tests. The experimental result clearly shows that the proposed system is capable of delivering sound moving effect to listeners. View full abstract»

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  • 41. OpenGL ESSL optimizing compiler for embedded 3D graphic processor

    Publication Year: 2012 , Page(s): 724 - 725
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (208 KB) |  | HTML iconHTML  

    Recently, graphic processing unit (GPU) becomes a mandatory component in mobile consumer devices such mobile phones. The vertex and fragment shader programs in embedded GPU are programmed with embedded system shading language(ESSL). The shader compiler for ESSL should be designed considering several distinct features of ESSL and GPU. In this paper, we present ESSL compiler techniques for embedded GPU. The compiler can optimize the code and data memory size as well as improve the performance of shader code by fully exploiting the special architecture of target GPU. Experiments show that the proposed optimization techniques can reduce the code size by up to 10.3% and the execution cycles by up to 16.8%. View full abstract»

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  • 42. Machine vision system for surface defect inspection of printed silicon solar cells

    Publication Year: 2012 , Page(s): 422 - 424
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (545 KB) |  | HTML iconHTML  

    Solar power has become more and more important due to the decrease of the energy sources. The solar cell is the main device to transform solar power to electric power. Since the power efficiency of solar cell is decreased with defects generated in manufacturing process, defect inspection is crucial to ensure the reliability of solar cells. This paper presents a cost-effective machine vision system for surface defect inspection of printed polycrystalline silicon solar cells. The defects of printed busbars and fingers are effectively inspected by using auto-thresholding and projection techniques sequentially in the inspection process. Experimental results have demonstrated that the defect inspection of printed polycrystalline silicon solar cells is very effective with the proposed system. View full abstract»

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  • 43. An idea for improving digital signage recognition

    Publication Year: 2012 , Page(s): 693 - 694
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1343 KB) |  | HTML iconHTML  

    We have made a hypothesis that recognition for Digital Signage could be improved when it is placed with necessary information (e.g. Flight Information, Delay Alert for a passenger) and/or attractive video (e.g. animation, colorful pictures). To prove this hypothesis, we conducted a field experiment at an airport. Result showed that it would be expected to have positive effect on Digital Signage recognition. View full abstract»

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  • 44. A Trojan research tool invading private homes: Concepts and implementations of playful learning

    Publication Year: 2012 , Page(s): 80 - 84
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (8178 KB) |  | HTML iconHTML  

    GORGE is the name of a research tool developed for investigations into playful development of technology competence. As a research tool, it has been employed several times in varying settings and application scenarios always quite successfully. Set up as a browser game, GORGE is now invading private homes. Playing GORGE may result in a gain of technology competence provided that particular aspects of digital games taxonomies are put into effect by setting up the edutainment system accordingly. View full abstract»

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  • 45. Building of an education system with electronic textbooks of the ePub format and with smartphones

    Publication Year: 2012 , Page(s): 325 - 328
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (500 KB) |  | HTML iconHTML  

    ePub3.0 supporting multilaguages besides English was announced in May, 2012. So, we propose an education system with electronic textbooks of the ePub format and smartphones. View full abstract»

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  • 46. Watershed-based stereo matching algorithm for depth map generation

    Publication Year: 2012 , Page(s): 411 - 412
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (369 KB) |  | HTML iconHTML  

    In Binocular depth generation algorithm, the depth value can be found by the disparity estimation by taking advantage of the similarity in these two views which be captured at the same time. However, it's not easy to find the accurate depth value if there is high similarity in color space around the area. To reduce the matching error in the regions with high similarity, the pixel information on the edge of the objects in color space can be used to predict the depth value of the object. This paper proposes an object region determination based on watershed segmentation algorithm to generate a matching window for stereo matching. To reduce the depth discontinuity and the computation time for disparity estimation on all pictures, this paper uses the motion vector information to compensate depth value for the successive depth video. Thus, depth map generated by the proposed algorithm can produce more suitable stereo images. Experimental results show that the stereo scopic reliability can be improved by the proposed algorithm in high stereoscopic sequence. The SSIM is increased about 0.34 and the PSNR is increased about 0.55dB when the proposed algorithm is used to compare the other approaches. View full abstract»

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  • 47. ADSET: A framework of rapid design space exploration for Android-based systems

    Publication Year: 2012 , Page(s): 586 - 587
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (274 KB) |  | HTML iconHTML  

    Automatic design space exploration (DSE) tools have been employed over years to evaluate high-performance computer architectures and software designs via on simulation tools. As today's smartphones and consumer electronic devices have become so complex, DSE tools are needed to speed up the design process and produce better designs for the targeted applications. However, traditional simulation tools are too slow to report good system designs in a timely fashion. Thus, in this paper, we propose a framework, called Android Design Space Exploration Tool (ADSET), to facilitate DSE for modern consumer electronic devices. To shorten the exploration time, we adopt a fast full-system modeling technique in our previous work and further develop a parallel DSE method to concurrently evaluate the multiple design points. In our case study, we show that ADSET is capable of modeling Android smartphones in the market and rapidly finds good designs in a large design space. View full abstract»

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  • 48. Data recovery from sudden power-off in mobile devices

    Publication Year: 2012 , Page(s): 584 - 585
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (486 KB) |  | HTML iconHTML  

    Mobile devices always have risk of unexpected battery component separation. In this paper, we present Difference Ratio-based Logging, a data recovery technology to prevent data loss in the volatile memory (DRAM) write buffer from sudden power-off. The proposed scheme can recover up-to-date user data in the buffer by using either two flash memory pages-sized NVRAM or small capacitor that sustains for flushing two pages of data in DRAM to flash memory. Our simulation study shows that the proposed scheme can provide recoverability of buffered data from sudden power-off with reasonable performance degradation compared with non-volatile memory-based write buffer. View full abstract»

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  • 49. Virtual networking method for multi-robot navigation

    Publication Year: 2012 , Page(s): 746 - 747
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (185 KB)  

    Virtual networking method for multi-robot navigation is proposed. This method is suitable for the collaboration of the robots that supports human workers in offices, factories, or disaster areas. In this method, virtual nodes and their forwarding tables are constructed on each robot according to DSDV routing protocol. These virtual information navigates the robot to its destination. The data volume is reasonable and is shareable with other robots through wireless channels. Simulations on a maze like environment is executed to confirm the performance of the proposed method. View full abstract»

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  • 50. Single exposure-based image fusion using multi-transformation

    Publication Year: 2012 , Page(s): 142 - 143
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (717 KB) |  | HTML iconHTML  

    We propose an image stretching method by fusing multi-transformed images. Instead of multiple exposed images for the HDR imaging, the proposed method generates differently stretched images from a single image and blends them to increase the perceptual dynamic range while skipping multiple image acquisition and avoiding the motion blur. View full abstract»

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