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Consumer Electronics, IEEE Transactions on

Issue 3 • Date Aug. 2003

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Displaying Results 1 - 25 of 45
  • Wireless measurement based resource allocation for QoS provisioning over IEEE 802.11 wireless LAN

    Publication Year: 2003 , Page(s): 614 - 620
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (647 KB) |  | HTML iconHTML  

    We propose a measurement based TCP-friendly rate control (TFRC) that adjusts the coding rates according to the channel characteristics of the wireless-to-wired network. To avoid the throughput degradation of multimedia flows traveling through wireless link, the proposed rate control system employs a new loss differentiation algorithm using packet loss statistics. This method can eliminate the effect of wireless losses in flow control and substantially reduce the abrupt quality degradation of the video streaming caused by the unreliable wireless link status. Experimental results show that the proposed rate control system produces the TCP-friendly rates while sharing the backbone bandwidth with TCP flows. Moreover, error resilient coding methods can be easily applied to the proposed TFRC by using the packet loss statistics. View full abstract»

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  • A seamless coordinator switching (SCS) scheme for wireless personal area network

    Publication Year: 2003 , Page(s): 554 - 560
    Cited by:  Papers (1)  |  Patents (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (453 KB) |  | HTML iconHTML  

    In the emerging wireless personal area networks (WPANs), one of the active devices in a piconet is designated as a coordinator, which plays a critical roles, e.g., to provide the basic timing for operation of the piconet and manage the QoS requirements/power saving modes. To warrant maintenance of the coordinating function under some unpredictable situations such as sudden power-off or fast movement of a coordinator, it must be seamlessly switched. This paper proposes a new SCS (seamless coordinator switching) scheme to maintain the piconet by selecting a coordinator in the subsequent superframe without incurring the re-initialization overhead. View full abstract»

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  • Efficient real-time frame layer rate control technique for low bit rate video over WLAN

    Publication Year: 2003 , Page(s): 621 - 628
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (700 KB) |  | HTML iconHTML  

    A real-time frame-layer rate control algorithm is proposed for low bit rate video coding over IEEE 802.11 wireless local area network (WLAN). The proposed rate control method performs bit allocation at the frame level to minimize the average distortion over an entire sequence as well as variations in distortion between frames. A new frame-layer rate-distortion model is derived, and a non-iterative optimization method is used for low computational complexity. The proposed algorithm produces low encoding time delay, and is suitable for real-time low-complexity video encoder. Experimental results indicate that the proposed control method provides better visual and PSNR performance than the existing TMN8 rate control method. View full abstract»

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  • Contents protection system using smart card interface for digital CATV network based on the OpenCable specification

    Publication Year: 2003 , Page(s): 693 - 702
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (557 KB) |  | HTML iconHTML  

    We propose the merging of the OpenCable reference model with the smart card interface defined by ISO/IEC 7816-3 and have implemented a new conditional access system (CAS) using this interface along with a Personal Computer Memory Card International Association (PCMCIA) interface. In addition, we have also designed the hardware architecture of the point-of-deployment (POD) security module, designed using the Verilog HDL, using the above two interfaces. The designed POD security module has an embedded 32-bit reduced instruction set computing (RISC) microprocessor that manages applications, such as an MPEG-2 filter, descrambler, and data encryption standard (DES). View full abstract»

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  • A secure flash card solution for remote access for mobile workforce

    Publication Year: 2003 , Page(s): 561 - 566
    Cited by:  Papers (1)  |  Patents (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (803 KB) |  | HTML iconHTML  

    We developed a secure remote access system using a secure flash card,for mobile workforce. The developed flash card has a tamper resistant module, which contains user authentication information and security keys. An authentication server and a client exchange their authentication information by using a key that is stored in the tamper resistant module of the flash card. Transactions between the flash card and the client are encrypted, and a processor encrypts and calculates the signature inside the tamper resistant module; thus, the system is highly secure. This remote access system also provides improved usability and increased information traceability. View full abstract»

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  • Integrated residential gateway controller for home energy management system

    Publication Year: 2003 , Page(s): 629 - 636
    Cited by:  Papers (23)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (767 KB) |  | HTML iconHTML  

    A low cost and highly reliable residential gateway controller (residential G/W) with plug & play mechanism has been developed for home energy management system (HEMS). Residential G/W is integrated on a small embedded H/W with Java, GUI-OS and the latest Internet technologies. HEMS equipped with residential G/W is also developed and installed in 20 houses in Tokyo for evaluation. View full abstract»

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  • Small form factor Portable Blue drive: power consumption considerations

    Publication Year: 2003 , Page(s): 637 - 641
    Cited by:  Patents (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (449 KB) |  | HTML iconHTML  

    Optical discs are popular for exchanging and distributing content. A small Portable Blue disc with a diameter of 30 mm stores at least 1 GB in a single layer using Blu-ray Disc technology. We describe strategies to achieve low power consumption in a Portable Blue system. Estimates show a value around 1/20 of the peak power (∼1 W) while streaming 1 Mb/s data. View full abstract»

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  • Scalar coprocessors for accelerating the G723.1 and G729A speech coders

    Publication Year: 2003 , Page(s): 703 - 710
    Cited by:  Papers (2)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (486 KB) |  | HTML iconHTML  

    We investigate two scalar coprocessors for accelerating the ITU-T G723.1 and G729A speech coders. Architecture space exploration indicates up to 72% reduction in the total number of instructions executed through the introduction of custom instructions and small changes to the C reference code. The accelerators are designed to be attached to a configurable embedded RISC CPU where they make use of the host register file and load/store infrastructure. View full abstract»

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  • Fast scene change detection for personal video recorder

    Publication Year: 2003 , Page(s): 683 - 688
    Cited by:  Papers (19)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (554 KB) |  | HTML iconHTML  

    We propose an efficient scene change detection method for personal video recorder to provide users with several convenient functionalities such as the browsing, fast forward and skip-play of recorded videos. Since most of the current available PVRs have low-powered CPUs, the scene change detector should not be computationally expensive. We implement the scene change detection algorithm using reduced images of only intra pictures in MPEG-2 compressed domain. The experimental results with a commercial PVR demonstrate the efficiency of the proposed method. View full abstract»

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  • EIA-708-B digital closed captioning implementation

    Publication Year: 2003 , Page(s): 567 - 570
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (437 KB) |  | HTML iconHTML  

    The FCC has mandated implementation of the EIA-708-B standard for digital closed captioning by July 1, 2002. The paper reviews some important digital closed captioning implementation issues and recommendations addressed in EIA/CEA CEB-10-A, "EIA-708-B Implementation Guidance". The topics are related to: caption service descriptors; window dimensions and attributes; handling reset, delay, and cancel commands; multi-byte commands. View full abstract»

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  • Motion vector correction based on the pattern-like image analysis

    Publication Year: 2003 , Page(s): 479 - 484
    Cited by:  Papers (2)  |  Patents (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (645 KB) |  | HTML iconHTML  

    In this paper, we propose a motion vector correction algorithm to correct the erroneous motion vectors due to the failure of conventional motion estimation (ME) based on block matching algorithm (BMA). The proposed method is based on the pattern-like image analysis that consists of the periodic pattern detection and calculation of motion parameters for the motion vector correction. In addition, the proposed method corrects effectively the erroneous motion vectors using the relations between the periodic pattern and local/global minima depending on whether the periodic pattern is static or moving. Also, it does not significantly increase computational complexity since it uses the estimated motion vectors and the integral projection of the sum of absolute difference (SAD) previously obtained from the conventional ME. Experimental results indicate good performance of the proposed scheme with significant reduction the erroneous motion vectors. View full abstract»

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  • Embedded implementation of acoustic field enhancement for stereo sound sources

    Publication Year: 2003 , Page(s): 737 - 741
    Cited by:  Papers (3)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1001 KB) |  | HTML iconHTML  

    An acoustic field enhancement implementation for stereo sound sources is proposed for dedicated embedded systems. With the use of an embedded DSP-based platform, our distinctive algorithm successfully constructs a signal processing filter structure to enhance the 3D acoustic field through both stereo headphones and stereo speakers. Since this algorithm is implemented by a 16 bit fixed-point DSP with a computational cost of about 50 MIPS and a small amount of memory, high-fidelity spatial acoustics can be achieved in various applications, such as portable stereo players, music streaming to mobile devices, etc. View full abstract»

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  • Self-configuring and auto-executing audio-visual system for consumer use

    Publication Year: 2003 , Page(s): 642 - 646
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (395 KB) |  | HTML iconHTML  

    This paper proposes methods of solving the remaining problems of AV controllers which can run several operation sequences. To realize this proposed AV controller, we employ reasoning technology. We propose a method that reduces the sequences of operation by using reasoning technology, and controls the AV system automatically. We set up an evaluation system with a consumer use microprocessor, and we confirmed the validity of the method. As a result, we confirm that the user can control AV devices more easily than with the conventional operation. View full abstract»

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  • Impulse burst position detection and channel estimation schemes for OFDM systems

    Publication Year: 2003 , Page(s): 539 - 545
    Cited by:  Papers (5)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (484 KB) |  | HTML iconHTML  

    A new method for compensating the effects of impulse noise in OFDM systems has been presented by Rinne, Henriksson and Hazmi (see Proc. 7th International OFDM Workshop, Hamburg. Germany, p.183-187, Sept. 2002). It is shown that in the AWGN case, the method can effectively cancel the impulse noise. However in the time-frequency selective channel further measures are needed. The purpose of this paper is to present an enhanced channel estimation scheme for the standard method to overcome its sensitivity to the time frequency selective channel estimates. The scheme uses the impulse free pilots to estimate the corrupted ones. Three different alternatives are discussed. Their performances in mean squared error (MSE) versus Doppler frequency are studied analytically. Bit error rate ratio (BER) simulations results are given, in the cases of SFN hilly terrain static and mobile channels. Additionally, results on simple practical impulse burst position detection method are also presented. View full abstract»

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  • E-VSB map signaling

    Publication Year: 2003 , Page(s): 515 - 518
    Cited by:  Papers (1)  |  Patents (48)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (424 KB) |  | HTML iconHTML  

    Addition of a backwards-compatible enhanced data mode (E-VSB) to ATSC (Advanced Television Systems Committee) standard 8-VSB transmissions requires a way to reliably indicate to new enhanced receivers the mix of E-VSB and 8-VSB data. This mix is indicated by "map" data using bits in the reserved area of the 8-VSB data field sync. This must be done in a manner that allows for changing the mix "on the fly" without loss of E-VSB/8-VSB data. The reception of the map data must be significantly more robust than the lowest code rate E-VSB data. A method is described that offers reliable signaling without latency for channel-change in the receiver. View full abstract»

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  • Group digital assistant: shared or combined PDA screen

    Publication Year: 2003 , Page(s): 524 - 529
    Cited by:  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1099 KB) |  | HTML iconHTML  

    This paper proposes a new concept of a shared and combined screen for new small devices called GDA (Group Digital Assistant). In the GDA, the screens of two PDAs can he shared at a sharing view mode, and can he treated just like one screen at a combination mode. The GDA uses a wireless LAN and Bluetooth for radio communication. We have developed application software and experimented in cooperative work for evaluation. We found that functions of the GDA were effective in actual cooperative work. The concept of the GDA can make flexible usage of a cellular phone and a PDA in the next generation. View full abstract»

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  • Measurement of indoor antennas using GTEM cell

    Publication Year: 2003 , Page(s): 536 - 538
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (364 KB) |  | HTML iconHTML  

    Characterization of indoor antennas has become a current issue, especially with digital television (DTV). The GTEM (Gigahertz transverse electromagnetic) cell, originally made to test equipment for electromagnetic immunity (EMI), is often available to CE designers. The device is also suited for measurement of relatively small indoor television antennas including those with integrated amplifiers. View full abstract»

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  • A constant-quality, single-pass VBR control for DVD recorders

    Publication Year: 2003 , Page(s): 653 - 662
    Cited by:  Papers (11)  |  Patents (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (942 KB) |  | HTML iconHTML  

    This paper describes a low complexity variable bit-rate (VBR) control method that achieves excellent and constant visual quality for single-pass, real time MPEG-2 encoding in DVD recorders. The bit-rate is controlled in a very accurate way. The algorithm runs in software on a very long instruction word (VLIW) processor by using less than 3 Millions of clock cycles. View full abstract»

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  • On performance of an equalization algorithm based on space and time diversity for wireless multimedia services to home users

    Publication Year: 2003 , Page(s): 597 - 601
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (318 KB) |  | HTML iconHTML  

    Wireless networks often operate under harsh environmental conditions with many uncontrollable factors causing data corruption and network outage. Atmospheric phenomena such as rain and snow make signal reception difficult for such systems. Furthermore, factors such as multipath fading and depolarization due to rain attenuation can severely and adversely impact the performance of wireless networks. This paper presents an equalization algorithm that uses spatial and temporal diversity. By using such information of the received signal, it is possible to minimize the effects of intersymbol interference, and leads to a reduction in computational complexity. Results show that the proposed equalization algorithm offers a noticeable improvement with single-carrier modulated signals. View full abstract»

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  • Spatial-temporal motion estimation for image reconstruction and mouse functionality with optical or capacitive sensors

    Publication Year: 2003 , Page(s): 711 - 718
    Cited by:  Papers (1)  |  Patents (8)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3036 KB) |  | HTML iconHTML  

    This paper describes an innovative solution to perform mouse functionality ("navigation") and image reconstruction ("scanning"). The application uses a recursive block-matching motion estimation algorithm and an optical or capacitive sensor. Results show this solution provides integrated mouse and scanner functionality at a very low cost. View full abstract»

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  • A one-pass variable bit-rate video coding for storage media

    Publication Year: 2003 , Page(s): 689 - 692
    Cited by:  Papers (9)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (302 KB) |  | HTML iconHTML  

    The paper presents a one-pass VBR coding algorithm, which provides high visual quality and satisfies a target bit-budget constraint. Since the proposed algorithm exploits the remaining bit amount instead of average bit-rate in determining quantization scale, it can balance the target bit-budget. Simulation results show that the proposed algorithm is superior to the MPEG-2 TM5 constant bit-rate (CBR) control in term of PSNR. The proposed algorithm also achieves real-time VBR video encoding requiring high visual quality for storage media. View full abstract»

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  • A hierarchical lossless/lossy coding system for high quality audio up to 192 kHz sampling 24 bit format

    Publication Year: 2003 , Page(s): 759 - 764
    Cited by:  Patents (8)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (847 KB) |  | HTML iconHTML  

    We present a flexible audio coding system for use in the continuous transmission of high-quality (192-kHz sampling rate, up to 24-bit digitization) stereo-audio data streams, either live or recorded. The system provides both lossless and variable-level lossy quality; quality is selectable to suit a full range of wide- and narrow-band IP networks. As input signals for transmission at the server PC, less than nine PCM sound files in different formats are simultaneously encodable, and the efficiency of simultaneous compression is very high. The system is realized by software that runs on a typical PC. This gives everyone on an IP network the ability to transmit high-quality sound anywhere within the network. An MPEG-4 audio codec provides the core of the lossy coding module. View full abstract»

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  • A global enhancement pipeline for low-cost imaging devices

    Publication Year: 2003 , Page(s): 670 - 675
    Cited by:  Papers (4)  |  Patents (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (945 KB) |  | HTML iconHTML  

    The paper describes a suitable algorithms pipelineable to enhance the picture quality in terms of both measured and perceived quality. The overall pipeline is mainly devoted to improve image acquired by low cost imaging sensors, typically present in consumer devices (i.e. mobile phone, web-cams, PDA, etc). A series of ad-hoc heuristics and techniques have been applied, taking into account main compression artifacts, chromatic and geometric distortions, etc.. Experimental results show effectiveness of the proposed pipeline. View full abstract»

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  • A multi group STC system

    Publication Year: 2003 , Page(s): 571 - 580
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (864 KB) |  | HTML iconHTML  

    In this paper, an integrated MPEG2 system time clock (STC) unit able to recover and track time base of up to four MPEG2 transport streams is presented. Described architecture allows generation of time base for multi context MPEG video/audio decoder system. The proposed circuit and its software algorithm of a digital control system for 27 MHz clock recovery is shown to have a good performance, low silicon cost, and low computational complexity. View full abstract»

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  • Symbol level equalizer-based receiver for downlink MAI suppression in CDMA systems

    Publication Year: 2003 , Page(s): 509 - 514
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (458 KB) |  | HTML iconHTML  

    In this paper, a type of symbol-level adaptive equalizer-based receiver is proposed for downlink multiple access interference (MAI) suppression in WCDMA cellular systems. This type of receiver does not need channel estimation, which is necessary it? most other proposals, and hence has relative low complexity. After introducing the loop structure of the basic MAI suppression receiver, the paper further proposes a practical modification to improve performance in time-varying and low signal-to-noise ratio (SNR) environments. This modified receiver is called pre-combining adaptive-order receiver. The performance enhancement owes to multipath pre-combining which increases and smoothes SNR variation of input signal and the adaptive order adjustment which optimizes the equalizer length in terms of channel conditions. The receiver structures are described and represented mathematically. The performances are evaluated by computer simulation and compared to each other as well as to currently used Rake receiver. 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