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Consumer Electronics, IEEE Transactions on

Issue 4 • Date Nov. 2007

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Displaying Results 1 - 25 of 90
  • IEEE Transactions on Consumer Electronics - Volume 63, Number 4 - Cover page

    Publication Year: 2007 , Page(s): C1
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    Freely Available from IEEE
  • IEEE Consumer Electronics Society

    Publication Year: 2007 , Page(s): C2
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    Freely Available from IEEE
  • 2007 IEEE CONSUMER ELECTRONICS SOCIETY ADMINISTRATIVE COMMITTEE

    Publication Year: 2007 , Page(s): i
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    Freely Available from IEEE
  • 2007 IEEE CONSUMER ELECTRONICS SOCIETY OFFICERS AND COMMITTEE CHAIRS

    Publication Year: 2007 , Page(s): ii
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  • Panorama Mosaic Optimization for Mobile Camera Systems

    Publication Year: 2007 , Page(s): 1217 - 1225
    Cited by:  Papers (12)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2938 KB) |  | HTML iconHTML  

    In order to enable the real-time image mosaic in mobile devices that have very limited computing power and memory, we propose an efficient image mosaic algorithm with integer arithmetic. The proposed algorithm is focused not only on the computational efficiency, but also on the performance improvement of image mosaic. For the efficient projection without transform estimation, we obtain successive images through the semitransparent view finder which shows the fixed amount of right part of previously captured image. We project each images onto cylindrical surface by the proposed projection equation and integer arithmetic. We align the projected images by hierarchical hexagon search and a matching measure that is robust to illumination changes caused by different exposures and vignette distortion. Finally, the images are naturally blended using color compensation and dynamic programming based stitching. The proposed mosaic algorithm is embedded and tested in mobile phone systems. According to various tests and experiments, the proposed algorithm shows good panorama composition in real-time compared with the other PC-based methods. View full abstract»

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  • Display System Interface without Line Memory for Low-Cost System-on-Glass

    Publication Year: 2007 , Page(s): 1226 - 1229
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (378 KB) |  | HTML iconHTML  

    A new system interface architecture is proposed for low-cost realization of system-on-glass (SoG) with low-temperature poly-silicon (LTPS) thin-film-transistor (TFT). By re-arranging the order of graphics data transmission, line memory is eliminated, which enables small area and thus lost cost implementation of SoG. Timing controller required for the proposed system interface has been developed for gate and source drivers which are all integrated on the same glass substrate of SoG. View full abstract»

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  • A New Image-stabilization Method by Transferring Electric Charges

    Publication Year: 2007 , Page(s): 1230 - 1236
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (724 KB) |  | HTML iconHTML  

    We have developed a new image stabilization method that utilizes electric charge transfer in the vertical transfer register of a CCD image sensor. This method repeats a series of actions including one or more continuous exposures according to the degree of camera shake, transferring, and adding electric charges in the vertical transfer registers to correct image blurs. This method can only correct blurs in the direction parallel to the vertical transfer registers, however it does not require mechanical components, external memory, or digital image processing circuits. Consequently, we can apply it in the direction of a single axis when executing biaxial blur correction to a camera that performs blur correction by means of drive control of the optical system in order to realize more compact cameras and reduce costs . View full abstract»

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  • A Fast Print-from-Video Technique for Cell-Phone Cameras

    Publication Year: 2007 , Page(s): 1237 - 1246
    Cited by:  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (951 KB) |  | HTML iconHTML  

    Print-from-video can be achieved by using super-resolution techniques. These techniques involve combining information from multiple low resolution images to generate and print a high resolution image. Among the existing super-resolution techniques, the most suitable one for deployment on portable consumer electronics products, in particular on cell-phones, that have limited processing and memory resources is the shift-and-add approach. However, this approach is known to generate artifacts when applied to real video sequences. This paper introduces a number of improvements made to the shift-and-add approach in terms of frame alignment, frame selection, and frame fusion to reduce such artifacts in computationally efficient manner. In addition, a post-processing step named pattern filtering is applied to reduce visual artifacts in printed images. The effectiveness of the developed solution is demonstrated by showing both quantitative and qualitative comparison results for video sequences captured by cell-phone cameras1. View full abstract»

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  • Intelligent Liquid Crystal Display (i-LCD) for Next Generation Television Applications

    Publication Year: 2007 , Page(s): 1247 - 1253
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (491 KB) |  | HTML iconHTML  

    This paper presents a new architecture for liquid crystal display television (LCD TV), intelligent LCD (i-LCD), which enables communication between the image processing board and the LCD panel. This allows the image processing board to change key parameters in real time, which are necessary for full LCD panel functionality. i-LCD has a serial digital interface just like a communication channel where all the circuits are connected to a digital interface. Examples of two new circuits for i-LCD are found here; they generate a common electrode voltage (Vcom) and gamma reference voltages. Both Vcom and the gamma voltages affect the long term operation of LCD TV panels and can be used to eliminate panel-to-panel color difference. An automatic optimization system is presented with proven automatic Vcom and gamma voltage tuning times of 0.35 s and 4 s, respectively. Hence, automatically optimized high quality LCD panels can be implemented in LCD TV. Other applications of i-LCD are also discussed. View full abstract»

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  • A Portable Surveillance Camera Architecture using One-bit Motion Detection

    Publication Year: 2007 , Page(s): 1254 - 1259
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1025 KB) |  | HTML iconHTML  

    We present a surveillance camera architecture using a one-bit motion detection algorithm for portable applications. The conventional surveillance system requires too many components and is too complicated for portable applications. In this paper, we propose a simple surveillance camera architecture with a motion detector that can detect changes of an object within its surroundings for low-power and low-cost applications. The proposed motion-detection algorithm uses one-bit images which are selected using a binary search algorithm that is decided by varying the reference voltage. We verify all the functions of the motion detector through the use of a user interface program on an FPGA board. Experimental results are also presented1. View full abstract»

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  • Adaptive Carrier Synchronization Using Decision-Aided Kalman Filtering Algorithms

    Publication Year: 2007 , Page(s): 1260 - 1267
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (687 KB) |  | HTML iconHTML  

    A new adaptive carrier recovery algorithm is proposed by using the decision-aided extended Kalman filtering technique. In order to reduce computational complexity of the Kalman recursions, the state model in the new algorithm uses only phase rather than both phase and frequency which are usually used in conventional modeling. The frequency is considered as an input term to the system equation and estimated by a phase error detector. A reduced observation model is also introduced to relieve computing load from multiple matrix to scalar operations in the Kalman recursions. Simulations show that the proposed one-state Kalman algorithm has better performance and lower complexity than the two-state Kalman algorithm for synchronization applications. The new algorithm is applied to the cable modem downstream system to demonstrate its effectiveness with FPGA implementation results. View full abstract»

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  • Movement-Aware Vertical Handoff of WLAN and Mobile WiMAX for Seamless Ubiquitous Access

    Publication Year: 2007 , Page(s): 1268 - 1275
    Cited by:  Papers (22)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (721 KB) |  | HTML iconHTML  

    This paper addresses a movement-aware vertical (MAV) handover algorithm between WLAN and Mobile WiMAX for seamless ubiquitous access. An MAV handover algorithm is proposed in this paper to exploit movement pattern for avoiding unnecessary handovers in the integrated WLAN and Mobile WiMAX networks. If a mobile station (MS)'s velocity is high and its movement pattern is irregular, unnecessary handovers likely occur more frequently. Therefore, the MS velocity and moving pattern are important factors for the handover decision procedure. To avoid unnecessary handovers, the MAV handover algorithm adjusts the dwell time adaptively and predicts the residual time in the cell of target base station (BS). Consequently, the adaptive dwell timer of MAV handover algorithm allows an MS a better connection as long as possible. Our simulation results show that the reduction of unnecessary handovers by leads to significant throughput improvements. View full abstract»

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  • An Efficient Two-stage Error Detector Based on Syntax and Continuity

    Publication Year: 2007 , Page(s): 1276 - 1280
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1192 KB) |  | HTML iconHTML  

    In video transmission, the compressed signal is extremely vulnerable to bit errors. Error concealment is widely used in video decoder to recover corrupted frames. Due to the use of variable length codes (VLCs), a single bit error in block-based bitstream may propagate to following of this slice. Especially, the effectiveness of error concealment technique relies heavily on correctly locating errors. In this paper, an error detector based on syntax and continuity which consists of two stages is proposed. The first stage is to find erroneous slice according to checking constraints imposed on video bitstream syntax or detecting special error patterns. In the second stage, the precise position of the first erroneous macroblock (MB) is found based on the continuity of spatial or temporal data of neighbor MBs. Simulation results demonstrate that the proposed method improves performance of error detection significantly compared with the traditional syntax-based method. View full abstract»

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  • Robust Plateau Removed Synchronization Techniques for Multiple-antenna OFDM-Based DVB-H Receivers

    Publication Year: 2007 , Page(s): 1281 - 1287
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (592 KB) |  | HTML iconHTML  

    As a special format of multiple input multiple output (MIMO), multiple-antenna diversity reception can be used to improve the signal quality of the orthogonal frequency division multiplexing (OFDM) based digital video broadcasting for handheld (DVB-H) systems. Under multipath fading channels, synchronization methods proposed for the single input single output (SISO) OFDM systems may be to fail if they are directly applied to the multiple-antenna OFDM-based DVB-H receivers. In this paper, a plateau removed maximum likelihood synchronization scheme is proposed for the multiple-antenna OFDM-based DVB-H receivers. Compared to the conventional maximum likelihood multiple antenna OFDM synchronization scheme, the proposed scheme not only removes the timing ambiguity caused by the plateau problem and has better detection capability but also is robust to different multipath fading channels. System performance studies are used to verify the efficiency of the proposed scheme for the multiple-antenna OFDM-based DVB-H receiver under different fading channel situations. View full abstract»

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  • Decision-Directed Carrier Phase Offset Recovery Scheme for 8-VSB Signals

    Publication Year: 2007 , Page(s): 1288 - 1292
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (823 KB) |  | HTML iconHTML  

    This paper presents a globally converging decision-directed blind adaptive algorithm for carrier phase offset recovery of 8-VSB signals. We show that the decision-directed blind phase-recovery algorithm has a well-behaved cost function similar to the cost function of blind phase-recovery algorithms based on high-order statistics. Hence, simple decision-directed phase recovery can replace blind phase-recovery algorithms for 8-VSB, which have high jitter noise. We also devise an adaptive mechanism to ensure global convergence, i.e., to remove the undesirable local minima that occur in most blind algorithms. Therefore, the proposed algorithm achieves not only global convergence but also minimum mean squared error jitter noise performance. View full abstract»

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  • Multi-carrier Receiver for Broadband Power Line Communications

    Publication Year: 2007 , Page(s): 1293 - 1301
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (901 KB) |  | HTML iconHTML  

    This paper presents the design of a broadband power line communication (BPLC) receiver optimized for reduced hardware complexity. To this end, the Radio-Frequency (RF) stage uses a direct conversion architecture while some innovative solutions are used in the base-band signal processing, such as a new frequency offset synchronization scheme based on the frequency domain. Every part of the receiver has been optimized using a new non-commercial hardware-software co-simulation package named BROCOLI (Broadband Co-simulation Library) based on a set of hierarchical models, specially developed for this application. A prototype of the BPLC transceiver has been built and some experimental results are shown which validate the design process and the implemented solutions. View full abstract»

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  • Performance Analysis and Parameter Optimization of DLL and MEDLL in Fading Multipath Environments for Next Generation Navigation Receivers

    Publication Year: 2007 , Page(s): 1302 - 1308
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (333 KB) |  | HTML iconHTML  

    In this paper the choice of DLL parameters is studied with special focus on multipath and Doppler sensitivity. The envisaged application is code tracking on navigation receivers and the multipath fading environments defined for next generation navigation systems are considered. Given the particular properties of these propagation environments, multipath estimating delay lock loop is shown to have the best performance within a particular signal to noise ratio range if some specific parameters such as the Predetection Integration Time and channel estimation time interval match the time-varying nature of the channel and the spacing in the early-late scheme is chosen accordingly to the multipath characteristics. View full abstract»

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  • Performance Analysis of Power Amplifier Back-off Levels in UWB Transmitters

    Publication Year: 2007 , Page(s): 1309 - 1313
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (306 KB) |  | HTML iconHTML  

    This paper focuses on the interplay between data throughput and battery duration in UWB units, both of which the most perceptible at the user' level. The potential benefits of enlarging the power amplifier back-off (linearity) are assessed for different channel conditions according to a communication system following the IEEE 802.15.3a standard (MB-OFDM proposal). New performance results are presented which highlight the kinds of channels where an increase in transmit linearity (power amplifier back-off enlargement) yields increased data throughput, and those where it does not. Results show whether designs sacrificing power efficiency have a benefit in data rate increase or it is simply a power spoil (ineffective reduction of battery's time-of-life). View full abstract»

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  • CDP Servo System Control using Fuzzy Logic Control

    Publication Year: 2007 , Page(s): 1314 - 1321
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1288 KB) |  | HTML iconHTML  

    Several servo mechanisms, such as focusing, spindling, tracking and sledding, are continuously balanced to make compact disc player (CDP) to play audio or video contents. However, due to the inconsistent uneven surface of the disc, the speed control of a spindle motor along the track radius, and unexpected random shock; the servo mechanism is very complicatedly driven in non-linear method. This paper will discuss on how to approach this method, how to develop and how to evaluate each algorithm based on the model of each servo mechanism using Fuzzy Logic Control1. View full abstract»

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  • An Area-Efficient FFT Architecture for OFDM Digital Video Broadcasting

    Publication Year: 2007 , Page(s): 1322 - 1326
    Cited by:  Papers (17)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (250 KB) |  | HTML iconHTML  

    In this paper, a novel high-performance 8k-point fast Fourier transform (DFT) processor architecture for OFDM digital video broadcasting(DVB) is proposed based on a novel radix-8 FFT architecture. Distributed arithmetic (DA) is used to implement the basic 8-point FFTs directly, where the hardware cost of complex multipliers and adders can be greatly reduced. The twiddle multiplications are performed by CORDIC-based twiddle multipliers. The results show that the proposed processor architecture can greatly save the area cost while keeping a high-speed processing speed, which may be attractive for many real-time DVB-T systems. View full abstract»

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  • A Fine Frequency Synchronization and Tracking for Mobile WiMAX Broadcasting Systems

    Publication Year: 2007 , Page(s): 1327 - 1332
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (678 KB) |  | HTML iconHTML  

    In this paper, we suggest a synchronization receiver for MIMO-OFDM based mobile broadcasting system. A MIMO-OFDM receiver with algorithms for tracking of residual frequency offset (RFO) and sampling frequency offset (SFO) is designed and simulated. The proposed synchronization and compensation schemes are applied to IEEE 802.16e WiMAX and its performance is investigated by computer simulations in terms of mean square error (MSE) and bit error rate (BER). The proposed RFO and SFO estimator has a fast convergence and a small residual degradation even for high speed mobile station. View full abstract»

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  • Performance Analysis of a New ICI-Self-Cancellation-Scheme in OFDM Systems

    Publication Year: 2007 , Page(s): 1333 - 1338
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (439 KB) |  | HTML iconHTML  

    In orthogonal frequency division multiplexing communication systems, the system performance may be degraded by the effect of inter-carrier interference. In this paper, a new scheme is proposed to cancel the effect of ICI. The system performances are evaluated based on carrier-to-interference ratio and bit error rate. The simulation results show that the effect of phase error with the proposed scheme is lighter than that with Zhao's scheme. Hence, the BER performance of proposed scheme is better than that of Zhao's scheme even in a large frequency offset. View full abstract»

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  • Delay-guaranteed Energy Saving Algorithm for the Delay-sensitive Applications in IEEE 802.16e Systems

    Publication Year: 2007 , Page(s): 1339 - 1347
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (456 KB) |  | HTML iconHTML  

    The 802.16e power management helps to increase the lifetime of Mobile Subscriber Stations (MSSs) by reducing their energy consumption, but this reduction results in Medium Access Control (MAC) Service Data Unit (SOU) response delay. Hence, both energy consumption and MAC SDU response delay are important performance metrics; however, they have a trade-off relationship. To guarantee the delay constraints of delay-sensitive applications, operating parameters in sleep-mode operation such as minimum sleep interval, Tmin, and maximum sleep interval, Tmax, should be considered seriously. Especially, large Tmax results in high MAC SDU response delay. However, in the IEEE 802.16e standard, this point is not given enough attention. In this paper, we first propose a numerical model to determine Tmax based on MAC SDU response delay. Then, we propose a Delay -Guaranteed Energy Saving (DGES) algorithm to minimize energy consumption with a given MAC SDU response delay by finding the optimal Tmax under a fixed Tmin. Our proposed numerical model and DGES algorithm are verified by simulation results1. View full abstract»

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  • Robust Timing and Frequency Synchronization Scheme for DTMB System

    Publication Year: 2007 , Page(s): 1348 - 1352
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (388 KB) |  | HTML iconHTML  

    In this paper a robust timing and frequency synchronization algorithm for DTMB system is developed. A two-step frequency offset estimation and compensation process is proposed to perform carrier recovery. Firstly coarse frequency estimation is achieved by utilizing the shift-and-add property of m-sequence. The second step finds the frame start position and the remaining frequency offset simultaneously. Meanwhile a timing tracking strategy is proposed to effectively track the dynamic changes in mobile environment. Thus the proposed scheme can resist large frequency offset and achieve accurate timing and frequency estimation. Simulation results under different channel situations verify the performance of the proposed scheme. View full abstract»

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  • Design and Implementation of an Adaptive Digital Radio DAB using Content Personalization on the Basis of Standards

    Publication Year: 2007 , Page(s): 1353 - 1361
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1155 KB) |  | HTML iconHTML  

    The aim of this paper is to present an approach to the personalization of a Digital Radio (DAB) set. An implemented prototype will be introduced that is adaptively tuning in to the hearing habits of an user, displaying recommendations, autonomously storing contributions and determining contextual information for a programme. The paper focusses on the specification of user preferences and the monitoring of usage behaviours. View full abstract»

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Aims & Scope

The main focus for the IEEE Transactions on Consumer Electronics is the engineering and research aspects of the theory, design, construction, manufacture or end use of mass market electronics, systems, software and services for consumers.

 

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
R. Simon Sherratt, IEEE Fellow
Professor of Consumer Electronics
School of Systems Engineering
The University of Reading
Reading, Berkshire RG6 6AY  U.K.
r.s.sherratt@reading.ac.uk; sherratt@ieee.org
Phone:+44 (0) 118 3788588