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Consumer Electronics, IEEE Transactions on

Issue 3 • Date Aug 1989

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Displaying Results 1 - 25 of 76
  • A digital color CCD imaging system using custom VLSI circuits

    Page(s): 382 - 389
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (480 KB)  

    The authors describe a prototype digital imaging system that can be configured as a single-sensor video camera or a film-to-video converter. The system includes a CCD (charge-coupled device) image sensor with a 3G color filter pattern, two full-custom CMOS digital video signal processing chips, and a custom electronically programmable sequencer chip. The CMOS VLSI digital circuits offer real-time operation while meeting the size, power, and cost constraints of one-chip cameras and fill-to-video converters. System timing and design methodology are discussed View full abstract»

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  • Computer aided design of multidimensional FIR filters for video applications

    Page(s): 290 - 296
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (392 KB)  

    Filter design formulations simultaneously controlling both frequency and space-time behavior are considered for video applications. An FIR (finite impulse response) design tool addressing such formulations has been built using standard linear programming packages. The result has been quite satisfactory and the cost very reasonable both in terms of man-hours and required computational facilities. The construction of such a CAD (computer aided design) tool and its performance are described. A number of filter design examples are presented View full abstract»

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  • HDTV adaptability to multiple media

    Page(s): 195 - 201
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (512 KB)  

    The spectrum-compatible high-definition television (SC-HDTV) system is concisely described in the context of terrestrial broadcasting. The system's application to the other three consumer TV delivery means, cable, satellite, and VCR, is discussed. Comparisons are made with other proposed ATV (advanced TV) systems. It is concluded that the SC-HDTV system has features that are attractive in all three cases. The minimized interference between SC-HDTV and NTSC (National Television System Committee) allows the assignment of an extra channel (currently taboo) to each broadcast station, permitting simulcasting without rendering obsolete the 160 million NTSC receivers in current use. The low and evenly distributed power of the SC-HDTV signal is of advantage in all media and especially so for the cable operator, both initially and ultimately. Cable also benefits from the possibility of encryption without loss of quality. Satellite and VCR benefit from the improved quality possible with the time-multiplexed format used for frequency modulation View full abstract»

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  • Introduction of an NTSC compatible HDTV system-HDS/NA

    Page(s): 216 - 226
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (704 KB)  

    The HDS/NA (High-Definition System for North America) contribution to the process of defining a compatible ATV (advanced TV) system is described. The following advantages of the HDS/NA approach are noted: compatibility on an even-handed basis among the three modes of television delivery-satellite, CATV, and terrestrial broadcast; a linear subsampling technique that offers an effective bandwidth reduction and simple receiver implementation; FM-friendly satellite feeder and/or DBS (direct broadcast service) delivery system; low-power transmission of the HDNTSC (high-definition National Television System Committee) augmentation channel, which should allow the use of the taboo channel without interfering with other TV channels using the same frequency band View full abstract»

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  • Fine pitch TAB technology with straight side wall bump structure for LCD panel

    Page(s): 343 - 351
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (820 KB)  

    A wafer-bumped TAB (tape automated bonding) device called the fine-pitch TAB device, which has been applied to a LCD (liquid crystal display) panel designed for a flat-panel display, is introduced and described. The devices, fabricated with flat-surface bumps and a straight side-wall structure instead of the conventional mushroom structure, have several important features, i.e. (1) the shear strength has an average value of 8.65×103 gr/mm2, (2) the inner lead pitch (the bump pitch) is 100 μm in the mass products, and a pitch of about 40 μm is achieved in the test vehicle. The technique utilizes a triple layer of intermediate metals consisting of titanium, nickel, and palladium, applies the bump photoengraving process using a dry-film resist, uses the cyanide electroplating technique, and uses the ILB (inner lead bonding)/OLB (outer lead bonding) equipment with higher alignment accuracy View full abstract»

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  • Optical disc system for wideband high definition video signal

    Page(s): 208 - 215
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (520 KB)  

    An optical video disk system for reproducing high-definition pictures with digital audio was developed, using two-channel recording and playback technology. A 20-MHz-bandwidth luminance (Y) signal and 6-MHz-bandwidth line sequential chrominance (C) signals for the 1125/60 HDTV (high-definition TV) standard were recorded without bandwidth compression. The maximum playback time is 8.4 min per side in a constant-angular-velocity disk rotational mode and can be prolonged to 15 minutes per side in a constant-linear-velocity mode View full abstract»

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  • A novel extended dynamic range synchronous detector for AM shortwave upconversion receivers

    Page(s): 390 - 396
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (548 KB)  

    In an upconversion receiver based on a high intermediate frequency (IF), only a limited IF selectivity can be obtained. A synchronous detector is presented which is intended to provide the required additional selectivity. Generally, this type of selectivity is limited by the dynamic range of the carrier-regenerating PLL (phase-locked loop). The dynamic range of the PLL, and thus of the complete detector, has been greatly extended by using automatic gain control (AGG) and autozero techniques. After optimization of the AGC amplifiers, a sufficiently high gain control range of 55 dB has been established with a prototype integrated on a 400-MHz analog semicustom array. The resulting signal-handling dynamic range of the PLL has turned out to be more than 60 dB. It is concluded that the proposed synchronous detector architecture, equipped with appropriately designed circuits, can provide the performance required by upconversion receivers with limited IF selectivity at frequencies of about 100 MHz View full abstract»

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  • A two-channel recording VCR using orthogonal arrangement of heads

    Page(s): 202 - 207
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (284 KB)  

    The authors describe a novel design technique for FM carrier allocation and an improved two-channel recording technique allowing both standard and long-play modes. Consequently, the experimental VCR can be used as a wide-screen-TV recorder. Experimental results confirm that this high-efficiency recording technique provides a picture quality nearly equal to that of the VCR for broadcast use with 1/2-inch conventional video tape. For users of conventional TV a converter from wide-screen to conventional signal format has been developed View full abstract»

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  • Advanced energy management for home use

    Page(s): 584 - 588
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (300 KB)  

    A novel system for controlling the electrical energy utilization in homes or small businesses is described. The developments include a telephone to power line carrier interface unit, a new electric meter that measures energy with variable pricing, and an energy controller that modifies use depending on price. The system provides for the marketing of electrical energy based on a supply/demand relationship using a real-time variable pricing scheme. A unique interface allows the customer to adjust energy utilization for heating or cooling, depending on comfort needs and the current price. Other electrical appliances such as electric water heaters can also be controlled automatically and optimally to achieve the lowest energy cost. A personal computer interface allows access to more detailed information and provides a means to personalize the system to a greater degree. The philosophy of this approach has been demonstrated, during field trials, to achieve the desired result of shifting some of the load from the peak to the valley. At the same time the users learned to use the system to lower their electric bills View full abstract»

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  • System and technological details of terrestrial/cable NTSC compatible HDTV

    Page(s): 227 - 238
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (892 KB)  

    Efficient baseband analog processing proven in hardware for a 525-line progressively scanned HDTV (high-definition TV) image is described. The processing steps are also suitable for 1050-line interlaced HDTV images. Specific terrestrial and cable HDTV packaging formats for baseband processing are presented which exploit efficient NTSC (National Television System Committee) compatibility for program delivery in North America. Analog augmentation formats requiring 4 MHz or 3 MHz of spectrum in addition to the NTSC signal are disclosed that may be suitable for taboo channel utilization. All signal components are readily transcodable from a MAC (multiplexed analog component) satellite format utilizing the same generic baseband analog processing method. Augmentation implementation issues associated with an actual hardware prototype are discussed View full abstract»

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  • Trench CCD image sensor

    Page(s): 360 - 367
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (552 KB)  

    The authors describe and present simulation data on the device structure, process flow, and operation of the Trench CCD (charge coupled device), which is being developed to increase the resolution of solid-state image sensors. The device provides larger dynamic range, higher sensitivity, and no image lag together with great packing density. A charge transfer channel formed around a trench eliminates the problem of insufficient dynamic range, which restricts the resolution. Because the Trench CCD occupies a small percentage of the total pixel area, the aperture area is increased, leading to improved sensitivity. Trench fabrication technology is used in dynamic RAM production; hence, further refinements can be expected to enable improvement of CCD image sensor performance parameters other than dynamic range. These features allow the development of a Trench CCD with 2 million pixels for 2/3-in and smaller optical systems, bringing a practical consumer HDTV (high-definition TV) camera closer to reality View full abstract»

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  • Electronic circuitry to protect solid state switches from excessive locked-rotor current in appliances

    Page(s): 630 - 634
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (332 KB)  

    The locked-rotor current in washing machines can destroy a triac before the circuit breaker has time to trip. The design of electronic circuitry to sense the overload condition and turn off the triac before damage results is presented. The protection circuits feature programmable response time, automatic resetting, and low cost. Data on the prototype circuit are given, and a computer simulation is used to compute component values. Critical triac device parameters are discussed, and their effect on protection circuit design is evaluated View full abstract»

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  • A compact satellite 1 GHz tuner with GaAs ICs

    Page(s): 397 - 405
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (492 KB)  

    The authors have designed two types of GaAs ICs, an RF amplifier and a converter. The amplifier has a stable input impedance. The converter has two AGC (automatic gain control) system (RF and IF AGC) and a wide input signal range with a good intermodulation characteristic. These ICs make full use of the good input versus output linearity and high mobility of a GaAs MESFET and have been integrated into a small chip. Using these ICs, the authors have developed a 1-GHz satellite tuner. This tuner can receive the 0.95-1.75-GHz BS frequency band and offers novel functions such as reception of two satellite broadcasting signals. The components of this tuner can be reduced by using GaAs ICs, making the most compact tuner to date (40 cm3) View full abstract»

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  • Local control bus system for consumer VCRs

    Page(s): 589 - 596
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (448 KB)  

    A consumer VCR local bus system for control signals called LANC, which allows a VCR to be integrated into a total system, has been developed. The LANC system can be applied to 8-mm, VHS, and beta-format VCRs, whether deck, camcorder, or portable model. With LANC, the VCR can communicate its status in detail to allow a fuller range of commands and perform a variety of complex operations. The LANC system utilizes a small, inexpensive dedicated interface block circuit and system-control microprocessor, making the system as a whole inexpensive and easy to install View full abstract»

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  • MUSC/NTSC converter

    Page(s): 142 - 152
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (832 KB)  

    The authors developed a home-use MUSE/NTSC (multiple subNyquist sample encoding/National Television System Committee) converter featuring basic or extended system selection capability. They describe the conversion algorithms, especially the aspect ratio conversion and scanning line decimation filtering from MUSE to NTSC. Five LSIs were developed for this system. Using this cost-effective converter, it is possible to watch MUSE programs on conventional TV sets. The system offers higher picture quality on TV sets with Y/C separated input or an RGB input View full abstract»

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  • The video processor for a personal computer

    Page(s): 614 - 623
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (720 KB)  

    The authors examine the possibility of realizing a video processor system which can display NTSC (National Television System Communication) images reproduced from various image devices on a computer display. They consider three problems connected with the case in which reproduced images coming from various image devices are displayed on the same screen at the same time together with computer characters and graphics: (1) how to display natural motion pictures with arbitrary shapes; (2) how to display natural motion pictures with arbitrary sizes; and (3) how to adjust the display method to deal with moving images, characters, and graphics. Some examples of actual system configurations are introduced, and possible applications of the video processor are reported, including an electronic motion picture encyclopedia View full abstract»

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  • A new noise suppression method for high-definition CCD cameras

    Page(s): 368 - 374
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (364 KB)  

    A novel noise suppression method for a high-definition CCD (charge coupled device) camera, the RDS (reflection-delayed noise suppression) method, is described. By using the reflection in a delay line, it has become possible to obtain both significant noise suppression and a wide frequency bandwidth. The method is superior to conventional methods in that its frequency bandwidth is very wide and its high-speed operations are very stable. The performance of a HDTV (high-definition TV) three-CCD color camera using this method is reported View full abstract»

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  • New PIF+SIF IC for improved picture and sound quality

    Page(s): 406 - 414
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (428 KB)  

    The authors have developed a video detection system that not only reduces buzz and buzz-beat interference which deteriorate the sound quality of television receivers but also improves the picture quality. They describe the PIF+SIF (picture intermediate frequency+sound intermediate frequency) IC used in the detection system. They outline the PIF system configuration and detail the new detection system and its performance View full abstract»

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  • Digital signal processing for home VCR circuitry

    Page(s): 429 - 435
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (308 KB)  

    A recently developed digital signal processing system for home VCR video circuitry is described. A video circuit for a VHS-format VCR has been digitized, and 12 new types of gate arrays have been developed. The video, color, and FM signal processing with the new circuitry is discussed. An experimental VCR has been constructed using them, and its recording/playback functions have been confirmed View full abstract»

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  • A full-wave motor drive IC based on the back-EMF sensing principle

    Page(s): 415 - 420
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (764 KB)  

    A bipolar IC has been designed which allows full-wave driving of brushless three-phase DC motors. The three push-pull power stages operate in a switching mode. The commutation moments are directly derived from the zero-crossings of the back-EMF (electromotive force) in the floating motor windings. A start-up system will generate communications when no zero-crossing can be detected. A highly accurate tach-signal is defined by the EMF zero-crossings. This IC offers the possibility of accurate full-wave motor-driving without extra sensors in the motor View full abstract»

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  • Video component system controller for use with scrambled cable

    Page(s): 469 - 475
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (396 KB)  

    A novel video system consisting of a television set and VCR, which uses source addition to make all RF channels available to both components, is described. The system also addresses applications such as connection to an external Hi-Fi sound system, and slave TV sets may be daisy-chained using coaxial cable in other rooms, with all source material shared with the main system. The system permits full remote control of all channels and includes a modulated UHF output. Full provisions are made for CATV RF decoders as well as baseband decoding. Performance results are presented View full abstract»

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  • Spectrum and interference issues in ATV

    Page(s): 170 - 177
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (428 KB)  

    The author discusses some of the spectrum and interference issues that arise in connection with HDTV (high-definition television). It is noted that if a large percentage of the present VHF and UHF broadcasters are to be accommodated with extra spectrum for ATV (advanced TV) service, two things are obvious from the preliminary results of a study by the Spectrum Scenarios Specialist Group: ATV systems will have to operate at significantly reduced cochannel spacings, and taboo spectrum will have to be used. In this context the author examines the interference requirements of ATV systems and considers approaches that might lead to effective interference reduction and/or elimination or reduction of the taboos. The reduction of interference by means of transmission system design and modern signal processing techniques in the spectrum-compatible HDTV system is shown as an example View full abstract»

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  • LSI architectures for system telephones using the Home Bus System standard

    Page(s): 698 - 706
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (556 KB)  

    Two kinds of widely applicable LSIs have been developed that adopt the Japanese Home Bus System standard. They offer significantly better economy and better features for creating effective intelligent home telephone systems and electronic key telephone systems. These LSIs combine analog and digital circuits for system telephones on one chip using a CMOS process. A discussion of overall system architecture is followed by a discussion of LSI architecture and construction View full abstract»

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  • A new induction cooking range for heating any kind of metal vessels

    Page(s): 635 - 641
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (372 KB)  

    The author describes the development of a novel induction cooking range for heating not only special iron vessels but also nonmagnetic and low-resistivity metal vessels such as aluminum pans, which cannot be heated by conventional induction ranges. Input resistances of exciting coils together with the various metal vessels were investigated, and the optimum characteristics of a high-frequency inverter were determined. The inverter has double-layer coils and two resonance-circuit capacitors. Proper coils and frequencies are automatically selected through the detection of the vessel material. The induction range can also prevent undesirable levitation of light aluminum vessels on the top plate by monitoring the variation of the resonance frequency View full abstract»

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  • 3.5 inch 16 Mbyte floppy disk drive

    Page(s): 672 - 680
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (460 KB)  

    The authors have developed a 3.5-in, 16-Mbyte, large-capacity, high-speed floppy disk drive (FDD). A novel embedded sector server technology with a learning-forward control and a double-loop multisampling system, as well as a microstepping motor with an optical encoder, were used to achieve high density of 542 tracks/in with an accurate trackability of ±2.5 μm and a high-speed average seek time of less than 50 msec as well as high vibration resistance. The authors describe the overall FDD system, the head positioning control system, and the control performance View full abstract»

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Aims & Scope

The primary purpose for publishing the Transactions of the Consumer Electronics Society is to present to the membership and the engineering community in general, papers on new technology oriented to Consumer Electronics.

 

Full Aims & Scope

Meet Our Editors

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