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Consumer Electronics, IEEE Transactions on

Issue 1 • Date Feb. 2006

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Displaying Results 1 - 25 of 53
  • IEEE Transactions on Consumer Electronics - February 2006 - Vol. 52 No. 1

    Publication Year: 2006 , Page(s): 0_1
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  • Preparation of papers for publication in ieee transactions on consumer electronics

    Publication Year: 2006 , Page(s): 0_2
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (46 KB)  

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  • 2006 IEEE Consumer Electronics Society Administrative Committee

    Publication Year: 2006 , Page(s): i
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  • 2006 IEEE Consumer Electronics Society and Committee Chairs

    Publication Year: 2006 , Page(s): ii
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  • New techniques for real-time FAT file system in mobile multimedia devices

    Publication Year: 2006 , Page(s): 1 - 9
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (229 KB) |  | HTML iconHTML  

    Flash memory has become the most important storage media in the mobile multimedia products such as MP3 players, mobile phones, and digital cameras. Most mobile multimedia devices, however, use one of the conventional FAT file systems slightly modified for flash memory environments. Our analysis shows that theses file systems have some restriction in recording a live multimedia stream stably because they have irregular write response times. In this paper, we have considered the problems of the existing FAT file system and propose two new techniques to solve the problems. The first technique called sector reservation method reduces internal overhead effectively. And the other method called ACPA avoids the periodic cluster allocation of the conventional FAT file system and removes the frequent modifications on the file allocation table in the FAT file system. To evaluate our new techniques, we implemented a prototype real-time FAT file system on ARM9 board with our two novel techniques. The experimental results show that our system achieves our goal successfully in that its write response times are very deterministic and more uniform. View full abstract»

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  • SoC design of an auto-focus driving image signal processor for mobile camera applications

    Publication Year: 2006 , Page(s): 10 - 16
    Cited by:  Papers (6)  |  Patents (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3686 KB) |  | HTML iconHTML  

    This paper presents a camera system on a chip (SoC) solution to capture focused images for mobile camera phones. In this work, the image signal processor (ISP) includes both a built-in auto focus (AF) control block and AF lens driver to fully implement AF with fast and accurate performance. Additionally, AF lens module has been formed by voice coil motor (VCM) type for compact size. The proposed ISP with AF lens driver, AF_ISP, can meet constraints such as small size, low cost, and low power consumption for mobile camera applications. View full abstract»

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  • Carrier phase independent timing recovery methods for VSB receivers

    Publication Year: 2006 , Page(s): 17 - 20
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (144 KB) |  | HTML iconHTML  

    This paper proposes an alternative timing recovery method for VSB receivers. It employs a timing error detector which uses both in-phase and quadrature-phase component of received VSB signal and operates at twice of a symbol frequency. The proposed method shows the insensitivity to residual carrier phase offset contained in the signal, thus providing consistent performances regardless of carrier recovery status. View full abstract»

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  • High-sensitivity and high-mobility compact DVB-T receiver for in-car entertainment

    Publication Year: 2006 , Page(s): 21 - 25
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (185 KB) |  | HTML iconHTML  

    A compact DVB-T receiver with better than -94 dBm sensitivity for in-car usage is presented in this work. Dual tuners are included in the receiver to reduce multi-path effects as well as realize the diversity technique. A robust audio/video interface (AVIO) is defined to accommodate different kinds of in-car displays with a variety of A/V specs. In addition, a protection circuit is proposed to provide the convenience that either active antennas or passive antennas can be plugged in the same antenna sockets. Field trials proved that the receiver works perfectly when the car is running over 180 Km/hr. View full abstract»

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  • An approach to simplify the design of IFFT/FFT cores for OFDM systems

    Publication Year: 2006 , Page(s): 26 - 32
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (489 KB) |  | HTML iconHTML  

    In this paper we present an approach to simplify the design of IFFT/FFT cores for OFDM applications, A novel software tool is proposed, called AFORE. It is able to generate efficient single and multiple mode IFFT/FFT processors. AFORE employs a parallel architecture, where the degree of parallelism can be varied. This way, the tool can find a trade off between area and processing time to meet the system specification. In order to assess the quality of the proposed approach, results are provided for some of the most widely used OFDM standards, such as, WLAN 802.11a/g, WMAN 802.16a, DVB-T. View full abstract»

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  • A channel recommendation system in mobile environment

    Publication Year: 2006 , Page(s): 33 - 39
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (391 KB) |  | HTML iconHTML  

    Digital multimedia broadcasting service has been at the center of developing issues in mobile environment. In contrast to traditional multimedia broadcasting systems, mobile devices have limit of information handling capacity. In order to solve the problem, this paper presents a personalized channel recommendation system at client side in mobile environment. The system includes four modules: client manager agent, monitoring agent, data preparation agent and recommendation agent. Within the recommendation agent, we develop a recommendation algorithm using users' preference transitions for the channels. Also, we design and implement the prototype system on the wireless Internet platform for interoperability. In the experiment, we compare the proposed algorithm with a conventional method. The experimental results show that the proposed recommendation system can provide better performance than the conventional method. View full abstract»

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  • A novel PAPR reduction scheme for OFDM systems: selective mapping of partial tones (SMOPT)

    Publication Year: 2006 , Page(s): 40 - 43
    Cited by:  Papers (19)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (221 KB) |  | HTML iconHTML  

    A novel scheme called the selective mapping of partial tones (SMOPT) is addressed for the reduction of the peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. The SMOPT first produces a set of modified OFDM symbols with reduced PAPRs by adding a set of mapping symbols designed on peak reduction tones (PRT) to the original OFDM symbol. The SMOPT then selects the symbol with the lowest PAPR for transmission among the modified OFDM symbols. When simulated under the IEEE 802.11a wireless local area network and ETSl EN 300 401 digital audio broadcasting physical layer models, the SMOPT is observed to have lower sensitivity to PRT positions, lower complexity, and more design flexibility than the tone reservation scheme. View full abstract»

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  • High frequency band dispersed-tone power line communication modem for networked appliances

    Publication Year: 2006 , Page(s): 44 - 50
    Cited by:  Papers (12)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (236 KB) |  | HTML iconHTML  

    Power line communication modem for appliances control/monitoring network was developed. In order to realize robust communication by reducing influence from noise and channel distortion, the power line communication modem employs dispersed-tone technology and utilizes high frequency band for data transmission. Dispersed-tone technology gives the modem compatibility with radio communication as well as immunity from noise and channel distortion of power line. Performance of communication was measured. And compatibility with radio communication was also assessed. The results showed that the power line communication modem proposed in this paper was well qualified as a communication device for the purpose, and was compatible with radio communication. View full abstract»

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  • Noise reduction for channel estimation based on pilot-block averaging in DVB-T receivers

    Publication Year: 2006 , Page(s): 51 - 58
    Cited by:  Papers (9)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (403 KB) |  | HTML iconHTML  

    This paper proposes a noise-reduction method to improve the channel-estimation performance in digital video broadcasting-terrestrial (DVB-T) receivers. In DVB-T, the channel estimation is carried out through two processes of pilot signal estimation and channel coefficient interpolation and thus the performance of the channel estimation is seriously affected by the accuracy of the interpolation. Since the accuracy of the interpolation depends on signal-to-noise ratio, it is important to reduce noise existing at the reference coefficients for the interpolation. To achieve the reduction of noise, we use pilot-insertion type approximation in four consecutive OFDM symbols, which construct one block with the same channel coefficients at the same pilot positions. Considering the fade rate of channels, we average the estimated reference, channel coefficients corresponding to the same subcarriers in two or more blocks. Computer simulation shows that the proposed method improves the estimation performance by more than 1 dB in terms of the symbol error rate obtained after equalization. View full abstract»

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  • Frequency-domain equalization for distributed terrestrial DTV transmission environments

    Publication Year: 2006 , Page(s): 59 - 67
    Cited by:  Patents (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (293 KB) |  | HTML iconHTML  

    The 8-VSB modulation, the transmission standard for the terrestrial digital television (DTV) of the Advanced Television Systems Committee (ATSC), suffers from multipath fading because it conveys information on the amplitude. To solve this problem, decision feedback equalizers (DFEs) have been commonly used in the terrestrial DTV receivers. However, under severe channels, such as a 0-dB ghost channel or a distributed transmission environment, the DFEs have shown unstable convergence due to the error propagation caused by decision errors. Instead of unstable time-domain DFE schemes, by proposing a frequency-domain direct-inversion equalization method, we achieve stable equalization and low symbol error rates. To secure the existence of a channel inverse, channel-matched filtering and noncausal filtering are carried out before equalization. Simulation results show that the proposed method performs much better than the existing DFE schemes in terms of both the stability and the symbol error rates. View full abstract»

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  • Robust decision-feedback equalization with a noncausal filter for ATSC DTV receivers

    Publication Year: 2006 , Page(s): 68 - 74
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (217 KB) |  | HTML iconHTML  

    A robust decision-feedback equalization method for ATSC DTV receivers is presented. Under severe channels, such as 0-dB ghost or a distributed transmission environment, decision-feedback equalizers (DFEs), which have been commonly used in ATSC DTV receivers, suffer from error propagation. To improve the robustness to the error propagation, we incorporate a channel-matched filter (CMF) and an intelligent sheer (IS). The use of the CMF prior to the DFE makes severe channels manageable in the DFE, The IS, a trellis decoder with a trace-back depth of 1, enhances a correct-decision probability in the DFE, especially under low SNR conditions. Adoption of the CMF and the IS clearly enhances the robustness of the DFE but may degrade the output SNR due to unwanted pre-ghosts caused by channel-matched filtering. We employ a noncausal all-pass filter operating in reversed time to preserve the robustness acquired by the CMF and the IS without the degradation of the output SNR. The noncausal filter changes an input channel with pre-ghosts into an approximately minimum-phase channel without pre-ghosts. Simulation results show that the proposed equalization scheme achieves the more stable convergence and the higher SNRs than the existing DFEs. View full abstract»

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  • Cluster based self-organization management protocols for wireless sensor networks

    Publication Year: 2006 , Page(s): 75 - 80
    Cited by:  Papers (21)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (353 KB) |  | HTML iconHTML  

    This study proposes a scheme for self-organization management protocols of higher-level nodes to contest member nodes with multi-hop form hierarchical clusters, introduce the "20/80 rule" for determining the ratio of headers to member nodes, and develop a new cluster-based routing protocol that integrates the inter-cluster on-demand routing and the intra-cluster table-driven routing applied in the sensor networks for further consumer applications. View full abstract»

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  • A low-complexity FEC assignment scheme for motion JPEG2000 over wireless network

    Publication Year: 2006 , Page(s): 81 - 86
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (437 KB) |  | HTML iconHTML  

    An FEC (forward error correction) assignment scheme for motion JPEG2000 is proposed, which is dedicated to video transmission over wireless network. While most existing unequal error protection code assignment schemes are based on trial-and-error iterations, which are computationally intensive and thus unsuitable for real-time applications, the proposed scheme uses the slope of the rate-distortion curve to choose a code for each quality layer. The FEC code for the first layer is chosen so that the probability of error in the layer is limited to a given permissible range. Comparison with conventional schemes demonstrates that the proposed scheme can provide the PSNR performance similar to that of conventional schemes, while its execution time is much lower. View full abstract»

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  • Maximum ratio combining for OFDM systems with cochannel interference

    Publication Year: 2006 , Page(s): 87 - 91
    Cited by:  Papers (3)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (159 KB) |  | HTML iconHTML  

    In this paper, we investigate a receive diversity combining method for orthogonal frequency division multiplexing wireless local area network systems with cochannel interference. The scheme utilizes interference plus noise power (INP) to obtain the weighting factors for signal to interference plus noise power ratio (SINR) based maximum ratio combining (MRC). INP is estimated by using the correlation between the subchannel gains within the coherence bandwidth of the channel, which is caused by the limited delay spread of the multipath channel. Simulation results show that the SINR based MRC using the proposed INP estimator reveals greatly improved packet error rate performance compared to the signal-to-noise ratio based MRC that only considers white channel noise. View full abstract»

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  • Sparse equalizer using adaptive weight activation for fast start-up in ATSC DTV systems

    Publication Year: 2006 , Page(s): 92 - 96
    Cited by:  Papers (2)  |  Patents (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (156 KB) |  | HTML iconHTML  

    Vestigial sideband (VSB) modulation for digital television (DTV) systems transmits a training sequence called field sync (FS) every 3/3 segments with a period 0/24.2 ms. The field sync sequence, however, is not long enough to guarantee the operation of an equalizer. So it requires many field sync sequences for the convergence of an equalizer with long taps in severely distorted channels. In this paper, a sparse equalizer using a data-recycling algorithm is proposed for fast convergence of the equalizer in 8-VSB systems. The proposed sparse equalizer with a data-recycling algorithm, utilizing one FS sequence for several times, selects effective equalizer taps for channel equalization and improves the convergence speed and output signal-to-noise ratio (SNR). The effectiveness of the proposed equalizer is evaluated from the points of the output SNR, convergence speed, and the number of required taps in Brazilian test channels and a single ghost dynamic channel. View full abstract»

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  • An open standard solution for domotic interoperability

    Publication Year: 2006 , Page(s): 97 - 103
    Cited by:  Papers (27)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (299 KB) |  | HTML iconHTML  

    This article describes a service-oriented solution framework designed for home environments. A pragmatic approach is developed to help integrate conventional home automation systems following the service oriented computing paradigm. We believe it is improbable that there will be a single dominant middleware for the home computing that would be right for different appliances. A number of middlewares have recently emerged and it is common knowledge that they haven't a sufficient degree of interoperability. Because of this, the authors show how the approach based on XML, Web services, and Internet protocols, provide a uniform and novel architecture to cope with the architecture complexity in a open standard way. Furthermore a converging layer is conceived to incorporate a high level abstraction by an XML-based home automation language. View full abstract»

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  • An integrated home server for communication, broadcast reception, and home automation

    Publication Year: 2006 , Page(s): 104 - 109
    Cited by:  Papers (24)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (252 KB) |  | HTML iconHTML  

    This paper presents a home server platform integrating the functions of communication, digital broadcasting reception, and home automation applications. The home server has a processing module of high performance to process software task, and a multimedia decoding module as a peripheral component interconnect slave device to decode the audio and the vide data compressed in various formats, and a home automation module to provide home control services, and a MPEG2 transport stream (TS) distributor to convey simultaneously three high definition television (HDTV) channels which may go their way from terrestrial, satellite, and cable tuners to the next destination via home network. For an implementation of this integrated home sever we have had to manipulate the video and audio paths from processing module, home automation module and tuner modules to display the selected one, on HDTV set. In order to convey Internet protocol television (IPTV) traffic through this integrated home server a QoS-enabled Ethernet switch is mounted to the processing module. View full abstract»

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  • An implementation of FTTH based home gateway supporting various services

    Publication Year: 2006 , Page(s): 110 - 115
    Cited by:  Papers (17)  |  Patents (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (500 KB) |  | HTML iconHTML  

    Home gateway (HG), or called residential gateway (RG), is a device that connects an access network, WAN (wide area network), to a home network (private network, generally). FTTH (fiber to the home) based HG is an HG with FTTH network as an access network interface. In this paper, we propose an implementation of FTTH based HG, specially EPON (Ethernet passive optical network) based HG. With the FTTH access network interface, the proposed HG can provide service bandwidth of 100 Mbps to 1 Gbps to each subscriber. The network bandwidth is enough to provide various home network services for each one. We propose the novel home gateway's architecture to provide various services efficiently and show its implementation. The use of VLAN (virtual local area network) scheme to isolate two network domains, WAN of public network and LAN of private home network, within single L2 Ethernet switch and the direct packet forwarding scheme without L3 processing for some specific packet are key idea for the HG supporting various services proposed in this paper. To manage the direct forwarding table, we use the information acquired from IGMP snooping function of the L2 Ethernet switch. View full abstract»

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  • Residential HDTV distribution system using UWB and IEEE 1394

    Publication Year: 2006 , Page(s): 116 - 122
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (308 KB) |  | HTML iconHTML  

    We propose a residential HDTV distribution system that is composed of UWB and IEEE 1394. This system converts multi-channel MPEG TS broadcasting data into IEEE 1394 packets or UWB packets based on IEEE802.15.3 WPAN. Any distributed UWB packets are again converted into MPEG TS data through a UWB-to-IEEE1394 bridge. Moreover, this system can also transmit IPTV packets encapsulated with IEEE 1394 packets from a home gateway or home server to a home UWB network. We implement UWB MAC and physical layer chips using CMOSASICs. View full abstract»

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  • Architecture for interoperability of services between an ACAP receiver and home networked devices

    Publication Year: 2006 , Page(s): 123 - 128
    Cited by:  Papers (9)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (263 KB) |  | HTML iconHTML  

    As digital convergence of home networking and broadcasting technologies is being accelerated, it becomes increasingly important to achieve interoperability of not only heterogeneous devices but also various types of services. Therefore, in this paper, we describe the design and implementation of architecture for interoperability of data broadcasting and home networking services based on the ACAP middleware and the UMB stack. The proposed architecture provides a TV-centric user interface capable of managing home networking services using TV sets, by applying Java TV Xlet interface and HAVi user interface APIs for home networking sendees such as data broadcasting services. In addition, it provides data broadcasting services through metadata and media streaming for home networked devices without ACAP middleware. View full abstract»

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  • Efficient video transcoding technique for QoS-based home gateway service

    Publication Year: 2006 , Page(s): 129 - 137
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (453 KB) |  | HTML iconHTML  

    The home gateway integrates heterogeneous home network environments and interconnects the home network and the public access networks. It is natural that users want to see the visual contents on the home network from outside the home. However, there exist significant differences in network capability and computing power of users. Video transcoding technique is an efficient mechanism to deliver visual contents to a variety of users who have different network conditions or terminal devices with different display capabilities. In this paper, we propose an efficient video transcoding technique as the key component of the home gateway architecture. It consists of two types of transcoding methods for adapting the bitrate of streaming video to the bandwidth of the transmission channel; spatial resolution reduction transcoding and temporal resolution reduction transcoding. The two transcoding methods are alternatively or simultaneously operated according to the requirements of users. Experimental results show that the proposed transcoding methods can preserve image quality while transcoding to the low bitrate. 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