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Consumer Electronics, IEEE Transactions on

Issue 2 • Date May 2011

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Displaying Results 1 - 25 of 98
  • IEEE Transactions on Consumer Electronics - Table of contents

    Publication Year: 2011 , Page(s): c1
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  • IEEE Consumer Electronics Society

    Publication Year: 2011 , Page(s): c2
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    Freely Available from IEEE
  • 2011 IEEE Consumer Electronics Society Administrative Committee

    Publication Year: 2011 , Page(s): i
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  • 2011 IEEE Consumer Electronics Society Officers and Committee Chairs

    Publication Year: 2011 , Page(s): ii
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  • Nominations

    Publication Year: 2011 , Page(s): iii
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  • The design and implementation of a low-cost 360-degree color LED display system

    Publication Year: 2011 , Page(s): 289 - 296
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (4629 KB) |  | HTML iconHTML  

    This paper is to introduce the system design and implementation of a low-cost 360-degree true-color light emitting diode (LED) display system. This energy-saving LED display system employs both rotating scan scheme and a precision control in combination of time and space to provide three same screen displays of resolution 320×240 with only three columns of tricolor (Red, Green, Blue) LEDs. The frequency of scan and the speed of rotation are high enough to be indistinguishable by human eyes, hence the display appears to be constantly illuminated and the brilliant color image can be seen from any viewing angle. In order to realize colorful images in real time, both LED gradation driving method and display data processing are implemented in CPLD (Complex Programmable Logic Array). The experimental results show that the LED display system has an efficient and satisfying display quality, compared to the traditional LED dot matrix display and commercial surround color LED display. View full abstract»

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  • Simplified sustain driver with low-voltage semiconductor devices and low-voltage power supply for AC plasma display panel

    Publication Year: 2011 , Page(s): 297 - 304
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1776 KB) |  | HTML iconHTML  

    Two types of novel sustain drivers with low cost and high performance are proposed for plasma display panels (PDPs). One is based on switching scan integrated circuit (IC) to realize high-efficient and cost-effective PDP drives with low-cost and low-voltage-rating circuit devices. Since the proposed driver is designed in such a way to utilize the switching operation of the scan IC as well as the common resonant circuit, the developed sustain driver can be implemented with considerably less number of circuit devices than the prior cascaded Weber-type driver. In addition, the proposed driver can employ a power supply board based on switching devices with reduced voltage rating and costeffectiveness. The other sustain driver is developed with a compromise of high efficiency and fast energy transfer speed for the PDP. In this driver, the resonant network is energized by the sustain voltage level and the half sustain voltage level in charging and discharging the panel capacitor, respectively. The energy transferred into the panel from the power supply is twice as fast as the conventional Weber-type driver, during every up-commutation of the panel voltage. On the other hand, the proposed driver recovers the panel energy using the resonant circuit biased by the half sustain voltage. This operation results in lower displacement current during the down-commutation period than during the up-commutation period, which can yield enhanced energy recovery and energy efficiency. Furthermore, this proposed driver is realized with reduced number of circuit devices, leading to the costeffectiveness. View full abstract»

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  • Low power and cost effective scaling engine with locking frame rate for display controllers

    Publication Year: 2011 , Page(s): 305 - 312
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3316 KB) |  | HTML iconHTML  

    Embedded memory typically requires significant silicon chip area, and in the case of display controller chip designs with a locking frame rate, it entails high power consumption. In this paper, we introduce a low-power cost-effective scaling engine with locking frame rate, with reduced memory capacity requirements. Using our proposed H-V scaling direction-interchangeable architecture, the scaling engine can dynamically adjust the data processing flow for reduced memory usage and lower power consumption. Evaluating the cost and power consumption, and in comparison with two conventional scaling engines, our proposed design reduces embedded memory requirements by 76% and 10% in the two cases, and has 99% and 18% lower power consumption, respectively. View full abstract»

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  • Image quality enhancement in AMOLED microdisplay for mobile projectors

    Publication Year: 2011 , Page(s): 313 - 319
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3759 KB) |  | HTML iconHTML  

    Data driving techniques and circuits to enhance the image quality of the 0.4-inch diagonal VGA AMOLED on silicon substrate have been proposed. The uniformity of a displayed image can be severely degraded by the random offset voltages of the data drivers. The color shift due to the differential OLED material aging is another well-known concern. To alleviate these image quality issues, data driving techniques such as direct driving by the DAC and dynamic compensation of OLED aging by updating the gamma correction curves are presented. Even with these additional features, the circuit area was drastically reduced compared with the authors' previous work by circuit design methods including peak current dispersion. Additionally, the LVDS serial interface, the buck and buck-boost DC-DC converters for the integrated drivers and pixel circuits are also integrated for slim form factor of the microdisplay. The proposed techniques and circuits were validated by both the simulation and fabrication in 0.35 μm CMOS process. View full abstract»

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  • Cooperative spectrum sensing with collaborative users using individual sensing credibility for cognitive radio network

    Publication Year: 2011 , Page(s): 320 - 326
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (864 KB) |  | HTML iconHTML  

    Cognitive radio (CR) has been considered as one of the promising next-generation communication systems owning to its ability of sensing and making use of vacant channels that are currently unused by licensed users. Reliable spectrum sensing of licensed users is required for CR network to minimize interference to licensed users. However, an individual CR user may find it difficult to reliably detect the activity status of licensed users due to fading and shadowing effects of the channel. In this paper, we propose a cooperative spectrum sensing scheme for collaborative users in which the sensing credibility of each individual user is utilized to improve local and global sensing performance, and reduce the number of reports transmitted through the control channel between CR users and the fusion center (FC). Using this method, few CR users who satisfy the credibility thresholds will transmit their local decisions to the FC one by one according to the states order of their credibility. That is, the CR user with higher reliability will transmit local decision sooner and others with less reliability can use this sensing information to update their local decisions. Finally, all local decisions received at the FC are combined into a global decision using the Chair - Varshney data fusion rule. View full abstract»

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  • Analysis and implementation of digital automatic gain control for DAB baseband decoder

    Publication Year: 2011 , Page(s): 327 - 334
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1203 KB) |  | HTML iconHTML  

    Digital Audio Broadcasting (DAB) receiver requires fast Automatic Gain Control (AGC) to compensate the strength loss due to the multipath propagation in mobile receiving condition. But fast AGC could also incorrectly amplify DAB's null symbol and the following phase reference symbol to cause the synchronization problem. In this paper, we mathematically analyze the AGC circuit under a Rayleigh fading channel and give the basic rule to generate the AGC feedback voltage. Then a fast and high accuracy AGC algorithm with least affection on the DAB null symbol is proposed. The algorithm is simplified to have only add, shift and compare operations, making it easy for hardware and software implementation. Finally the algorithm is simulated and verified on Field Program Gate Array (FPGA) device. The test results show that the proposed AGC algorithm can be settled within 0.5 ms, and keep the received signal stable at a moving speed from stationary to over 120 km/h, both in city and suburban area. The algorithm and the analysis method can also be used for AGC design in other wireless systems. View full abstract»

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  • Performance analysis of wireless body area network in indoor off-body communication

    Publication Year: 2011 , Page(s): 335 - 338
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (251 KB) |  | HTML iconHTML  

    Wireless Body Area Networks (WBANs) are considered to be a new method for short range wireless communication. Channel characteristics of WBAN are different from those of other wireless channels; specifically, when the human body rotates, the WBAN channel between the body surface and the wireless access point is changed via body shadowing. This paper analyzes the characteristics of recently proposed off-body WBAN channels and bit error performances when the human body rotates. In order to avoid inadequate channels and to improve the bit error performances, the receive antenna is attached to the back side, additionally. And the performance for each diversity scheme is evaluated. View full abstract»

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  • IP-recovery in the DVB-H Link layer for TV on mobile

    Publication Year: 2011 , Page(s): 339 - 347
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (590 KB) |  | HTML iconHTML  

    Recently, DVB-H Internet Protocol based TV on Mobile devices made its entrance in the mobile arena. Due to transmission over an error-prone channel, IP datagrams (packet at network layer) may be corrupted. To improve reception robustness, the DVB-H link layer is equipped with Forward Error Correction (FEC), allowing correction of erroneous IP datagrams, using two-bit signaling information. During reception, locator information is derived prior to FEC, indicating the storage position of correctly received IP datagrams. This is essential due to the variable-length sizes of the IP-based data. For the situation that FEC fails to correct all erroneously received data, the locator information enables retrieval of all correctly received IP datagrams and indicates the location of potentially corrected IP datagrams. Using the derived locator information, experimental research has shown that after FEC, a considerable number of correct IP datagrams can still be recovered from an incorrect MPE-FEC frame. This results in up to 50% data recovery for medium-sized datagrams. This successful recovery depends on the received IP datagram length and the transmission error probability and results in an improved audiovisual decoding quality. View full abstract»

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  • A novel channel estimation technique for OFDM systems with robustness against timing offset

    Publication Year: 2011 , Page(s): 348 - 356
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (392 KB) |  | HTML iconHTML  

    A new interpolation based channel estimation technique has been proposed to eliminate the effect of phase rotation caused by symbol timing offset (STO) in comb-type pilot-aided OFDM systems. STO is one of the most severe impairments that leads to inter-symbol interference (ISI) and phase rotation of FFT outputs and results in performance degradation in OFDM systems. The main advantage of the proposed channel estimation technique is its insensitivity to the impact of phase rotation. Subsequently, the fine timing synchronization process (which tries to cancel the residual STO) in conventional timing synchronization methods can be eliminated. The main idea behind the proposed technique is to separate the phase and the magnitude components of the estimated channel frequency response at the pilot subcarriers. In this way, two steps of interpolation are performed for the both phase and magnitude, separately and independently. Computational complexity of the proposed channel estimation method is approximately equal to that of the conventional one. Analytical and simulation results of applying the proposed technique to the DVB-T system show that the achieved BER performance is close to that of conventional method in the absence of any timing offset, while in the presence of STO, the proposed technique outperforms the conventional method, considerably. View full abstract»

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  • Adaptive channel control scheme to reduce channel zapping time of mobile IPTV service

    Publication Year: 2011 , Page(s): 357 - 365
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1003 KB) |  | HTML iconHTML  

    Due to the limited bandwidth of the mobile network, mobile IPTV does not broadcast the content of all channels to its users. Channel zapping time, which is inevitable time until the user watches the selected channel when the streaming data of selected channel is not available at the mobile device, significantly affects the QoS (Quality of Service) of mobile IPTV services. This paper presents a simple but effective channel control scheme that reduces channel zapping time and improves user perceived QoS in mobile networks. The proposed scheme uses the user channel switching behavior-based prebuffering channel control scheme and network-aware rate control scheme. The experimental result shows that the proposed scheme can significantly reduce channel zapping time of mobile IPTV service. View full abstract»

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  • Partial transmit sequence scheme with new phase sequence for PAPR reduction in OFDM systems

    Publication Year: 2011 , Page(s): 366 - 371
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (689 KB) |  | HTML iconHTML  

    One of the effective methods used for reducing peak to average power ratio (PAPR) in OFDM systems is partial transmit sequence (PTS). In the conventional PTS (CPTS) several inverse fast Fourier transform (IFFT) operations and complicated calculation to obtain optimum phase sequence, increase the computational complexity of C-PTS. In this paper, we propose a technique to reduce the number of IFFT operations to half at the expense of a slight PAPR degradation. Simulations are performed with QPSK modulation with OFDM signal and Saleh model power amplifier. The effects of digital predistortion (DPD) to increase the linearity and efficiency of the Saleh model power amplifier (PA) are also examined. View full abstract»

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  • A DVB-H receiver and gateway implementation on a FPGA- and DSP-based platform

    Publication Year: 2011 , Page(s): 372 - 378
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2228 KB) |  | HTML iconHTML  

    DVB-H is a mobile TV broadcasting system that is being deployed in many countries around the world. Although specific terminals do exist, it is not very common for mobile terminals (e.g. smartphones or tablets) to be DVB-H enabled. Therefore, it might be desirable to have some kind of device that could retransmit the DVB-H services using a more established system such as WiFi. A prototype system, based on FPGA and DSP, that is able to receive a DVB-H multiplex, extract a desired service and retransmit it to any wired or wireless Ethernet-type network is presented. It can also decode and present the selected program. View full abstract»

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  • Large-scale active RFID system utilizing ZigBee networks

    Publication Year: 2011 , Page(s): 379 - 385
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2123 KB) |  | HTML iconHTML  

    As the era of the ubiquitous computing is ushered in, consumers have been primed for a variety of automation applications. Active RFIDs can be used for a number of automation applications because it may also have other sensors to extend its applications. An active RFID instinctively focuses on a long communication range. Nevertheless, active RFIDs cannot be applied to a large-scale area due to their limited radio communication and obstacles. This paper introduces a large-scale active RFID system based on multi-hop deployment utilizing dual radio frequency to overcome radio shadow areas that do not reach signals from the RFID reader. The proposed system consists of multiple RFID readers deployed in an ad hoc pattern. It uses a multihop collection scheme utilizing ZigBee networks to extend the coverage of the RFID reader and collect RFID tags outside its communication range. This paper also includes an experiment evaluating performance of the proposed method, using an implemented RFID system that complies with the standard for 433 MHz active RFIDs based on ISO/IEC 18000-7. View full abstract»

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  • Prediction-based smart channel scanning with minimized service disruption for IEEE 802.11e WLAN

    Publication Year: 2011 , Page(s): 386 - 394
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (682 KB) |  | HTML iconHTML  

    The recent proliferation of smart mobile devices with IEEE 802.11 interfaces for real-time multimedia services such as VoIP, IPTV and video conference, strongly requires guaranteed QoS provisioning with seamless secure mobility during handover among IEEE 802.11 access points. The most important element of handover delay is channel scanning. Most of the existing channel scanning schemes, however, take more than 100 ms and do not guarantee the jitter requirement of less than 50 ms, which is required to guarantee the QoS of real-time services. This paper proposes a smart channel scanning where the channel scanning is carefully scheduled based on predicting the channel scanning time and interleaved frame delivery with limited jitter. This paper also describes an analytical model for predicting smart channel scanning time. The correctness of the prediction of channel scanning delay is analyzed through a series of experiments in a real testbed environment with more than 20 mobile nodes with MadWiFi interface cards. Also, the performance of the proposed smart scanning is compared with that of other schemes via network simulations. It is verified that the proposed smart channel scanning can provide QoS-guaranteed handovers with limited jitter of less than 50 ms and no packet losses in various conditions. The proposed smart channel scanning outperforms the existing scanning scheme under various topology configurations in terms of packet loss, jitter, service disruption time and total scanning time. View full abstract»

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  • Gigabit UWB video transmission system for wireless video area network

    Publication Year: 2011 , Page(s): 395 - 402
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2803 KB) |  | HTML iconHTML  

    Ultra-wideband (UWB) technology has offered a large application bandwidth which has been reached up to 1 Gb/s recently. One of various UWB specifications, medium access control (MAC) and physical layer (PHY) technologies of WiMedia Alliance can also be used for high speed multimedia applications to establish a wireless video area network (WVAN). In this paper, we propose a Gb/s UWB video transmission system for WVANs. In order to verify the possibilities of Gb/s wireless transmission of multiple video streams, we first built an analysis model and a simulation model. Then we implemented a hardware-based traffic processing block and a Gb/s wireless MAC accelerator. Using the proposed Gb/s video transmission system, we can transmit high definition video streams to several tens of users while guaranteeing quality of service. View full abstract»

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  • Low-power zero-IF full-segment ISDB-T CMOS tuner with tenth-order baseband filters

    Publication Year: 2011 , Page(s): 403 - 410
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1938 KB) |  | HTML iconHTML  

    A zero-IF tuner IC with wide RF input range (92 dB) and low power consumption (530 mW in a single 3.3 V supply) for full-segment ISDB-T digital broadcast reception was realized using 0.25 μm RF-CMOS technology. Tenthorder baseband filters were implemented instead of external surface-acoustic-wave filters. The wideband receiver selects one of two LNAs under the condition of full-segment ISDB-T 64QAM modulation (CR=3/4), and provides either low-IF or direct-IF output. A sensitivity of -80 dBm was achieved. View full abstract»

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  • A dynamically reconfigurable architecture for smart grids

    Publication Year: 2011 , Page(s): 411 - 419
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (754 KB) |  | HTML iconHTML  

    This paper introduces a proposal for a smart grid management platform built on the distributed programming paradigm. Besides it is based on an information model and event architecture. The information model defines a set of clear interfaces to manage every "grid node". We built an actual implementation of a low-cost embeddable control/meter device that may even be attached to individual appliances. These devices behave as conventional autonomous remote distributed objects and provide full support for the information model and also for integration with the communication middleware. The resulting event architecture provides great flexibility to manage information flows from services and applications. View full abstract»

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  • Power-managed smart lighting using a semantic interoperability architecture

    Publication Year: 2011 , Page(s): 420 - 427
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (4419 KB) |  | HTML iconHTML  

    We present a power-managed smart lighting system that allows collaboration of Consumer Electronics (CE) lighting-devices and corresponding system architectures provided by different CE suppliers. In the example scenario, the rooms of a building are categorized as low- and high-priority, each category utilizing a different system architecture. The rooms collaborate through a semantic interoperability platform. The overall smart lighting system conforms to a power quota regime and maintains a target power consumption level by automatically adjusting power consumed by luminaries in the building. Experiments with CE devices of different suppliers operating on different networks show that the semantic interoperability architecture allows device collaboration that can lead to lower power cost. View full abstract»

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  • Automatic docking system for recharging home surveillance robots

    Publication Year: 2011 , Page(s): 428 - 435
    Cited by:  Papers (1)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (847 KB) |  | HTML iconHTML  

    This paper presents the development and characterization of a surveillance robot with automatic docking and recharging capabilities for home security. The proposed system is composed of a surveillance robot and a docking station. The palm-sized surveillance robot has a triangular shape with three wheels. It communicates with the general wireless home router through WiFi. It communicates with the docking station through ZigBee and serves as a mobile wireless sensor network gateway. The docking station has a trapezoidal structure with an arc-shaped docking interface. A docking method based on the self-localization of the robot and the infrared detectors of the docking station is proposed. The robot can return to the docking station for recharging operations when the on-board battery is too low. The experimental results show that the prototype robot achieved a success rate of 90% after 60 different docking attempts. View full abstract»

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  • A smart energy distribution and management system for renewable energy distribution and context-aware services based on user patterns and load forecasting

    Publication Year: 2011 , Page(s): 436 - 444
    Cited by:  Papers (13)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2321 KB) |  | HTML iconHTML  

    Emerging green IT and smart grid technologies have changed electric power infrastructure more efficiently. These technologies enable a power system operator and a consumer to improve energy efficiency and reduce greenhouse gas emissions by optimizing energy distribution and management. There are many studies of these topics with the trend of green IT and smart grid technology. However, existing systems are still not effectively implemented in home and building because of their architectural limitations. Therefore, in this paper, we propose a smart energy distribution and management system (SEDMS) that operates through interaction between a smart energy distribution system and a smart monitoring and control system. Proposed system monitors information about power consumption, a user¿s situation and surroundings as well as controls appliances using dynamic patterns. Because SEDMS is connected with the existing power grid and with the newrenewable energy system, we consider integration of new renewable energy system through electric power control. We implemented proposed system in test-bed and carry out some experiments. The results show that a reduction of the service response time and the power consumption are approximately 45.6% and 9-17% respectively. 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