1988 International Broadcasting Convention, IBC 1988

23-27 Sept. 1988

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Displaying Results 1 - 25 of 100
  • Hierarchical NTSC compatible HDTV system architecture-a North American perspective

    Publication Year: 1988, Page(s):30 - 33
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (329 KB)

    The authors describe a possible advanced television (ATV) architecture for North America and define its functional modules and corresponding interfaces. The developed model is recommended as a design tool for standardizing ATV in North America and analysing interrelationships of the functional modules on the economic basis. They propose a 'hierarchical' ATV emission system with full NTSC compatibi... View full abstract»

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  • Development of advanced HD-MAC coding algorithms

    Publication Year: 1988, Page(s):54 - 56
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (238 KB)

    Among the different subprojects of the Eureka 95 HDTV project, subproject 5 has been given the task of formulating the detailed algorithm to be used for coding the HDTV signal into a MAC compatible form to be submitted to the CCIR. The authors describe the organization of the working group within subproject 5, the separation of the problem into its various aspects and the contributions being made ... View full abstract»

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  • HDTV displays: subjective effects of scanning standards and domestic picture sizes

    Publication Year: 1988, Page(s):204 - 211
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (378 KB)

    Describes the results of some subjective tests relating to HDTV displays. The first set of tests investigated the trade-off between display field-rate and number of displayed lines on perceived image quality at a constant line frequency. The second investigated the size of display and viewing distances which could or would be accommodated in the domestic home in practice. This latter test assumed ... View full abstract»

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  • Spatially adaptive sub-branches for HD-MAC

    Publication Year: 1988, Page(s):66 - 69
    Cited by:  Papers (1)  |  Patents (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (224 KB)

    The authors describe how spatially adaptive filtering can be used in the HD-MAC system to increase the apparent resolution and to indicate how it can be used in conjunction with motion compensation. Simulated systems of five and seven branch HD-MAC transmission systems are constructed, giving results that have a substantial improvement in resolution over a three branch system without introducing o... View full abstract»

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  • HD-MAC coding of high definition television signals

    Publication Year: 1988, Page(s):62 - 65
    Cited by:  Papers (2)  |  Patents (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (196 KB)

    The authors discuss the problem of MAC compatible broadcasting of a high definition television (HDTV) signal. The problem of MAC compatible broadcasting is studied as part of the Eureka 95 project and is called HD-MAC coding. The HD-MAC coding system is designed to achieve a bandwidth reduction factor of about 4. The authors describe several techniques that make this possible. The coding system pr... View full abstract»

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  • Instrumentation of a compatible HD-MAC coding system using DATV

    Publication Year: 1988, Page(s):57 - 61
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (224 KB)

    The authors consider a working standard for HDTV equipment, and discuss the selection of an HD-MAC coding algorithm. Luminance and colour processing are described, and the processing blocks, including pre- and post-filters, are discussed. Task division is considered View full abstract»

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  • Acoustic design for stereo television

    Publication Year: 1988, Page(s):82 - 85
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (164 KB)

    The author considers the performance of the monitoring environment, and discusses in particular the changes necessary for stereo television broadcasting. Measurements and design criteria are considered, and the energy and time energy frequency curves are described. The effects of reverberation are introduced View full abstract»

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  • The control and monitoring of stereophonic sound with television pictures

    Publication Year: 1988, Page(s):336 - 339
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (260 KB)

    The paper looks very briefly at the many and varied aspects of audio subjectivity; focusses on the main areas that will have the most effect on the viewer, and it suggests some ideas for control and monitoring, with the aim of achieving a consistent and reproduceable stereophonic soundfield for the television viewer. Experience gained in the cinema industry indicates that a one to one relationship... View full abstract»

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  • Advanced television: a terrestrial perspective

    Publication Year: 1988, Page(s):438 - 440
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (212 KB)

    The introduction of advanced television systems (ATV) representing a quantum leap in television quality may be imminent in the United States. The ATV transmission system in the most advanced state of development, NHK's MUSE system, was designed for satellite-to-home distribution. It requires more spectrum than can be provided through existing terrestrial broadcast channels and is incompatible with... View full abstract»

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  • Conditional access scrambling techniques for terrestrial UHF television broadcasts

    Publication Year: 1988, Page(s):318 - 322
    Cited by:  Patents (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (388 KB)

    Describes in outline form the particular requirements and constraints which must be met by the conditional access (CA) techniques applied to an existing terrestrial UHF television broadcast network, and outline the results of BBC laboratory and over-air tests of CA television techniques. A conditional access television system combines the processes of scrambling and encryption. Scrambling is the p... View full abstract»

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  • Experience in operating a direct satellite broadcast system by NHK

    Publication Year: 1988, Page(s):185 - 188
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (260 KB)

    NHK (Japan Broadcasting Corporation) has been operating its satellite broadcasting system using the direct broadcasting satellites, BS-2a and BS-2b, for more than 31/2 years in Japan, in collaboration with Telecommunications Satellite Corporation of Japan (TSCJ) and National Space Development Agency of Japan (NASDA). In this paper, NHK's experience in operating its satellite ... View full abstract»

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  • Videodisc and player for HDMAC

    Publication Year: 1988, Page(s):224 - 227
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (180 KB)

    High definition television standards such as HDMAC require high density storage media. The videodisc medium fulfils this requirement: high-density storage and fast retrieval are achieved. A description of the transparent modulation system for a HDTV video-signal is given. It will be shown that the HDMAC format as developed in the Eureka project is the best solution for HDTV signals on a videodisc.... View full abstract»

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  • System implications of high power multi-amplifier UHF television transmitters

    Publication Year: 1988, Page(s):110 - 113
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (252 KB)

    In recent years power levels for UHF television transmitter systems have been increasing. In the USA 120 and 240 kW stations are commonplace and the general trend is towards even higher powers. The current limit on power output for external cavity klystrons is 60-70 kW peak sync. It is therefore necessary to parallel klystron amplifiers to provide higher powers. Traditional coaxial combiners are n... View full abstract»

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  • Motion compensated DATV bandwidth compression for HDTV

    Publication Year: 1988, Page(s):78 - 81
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (452 KB)

    The author describes the application of a motion vector measurement technique, developed by the BBC, to improve the bandwidth reduction system adopted for the Eureka 1988 demonstration chain. The system measures the speed and direction of motion in the source scene and uses this information to perform motion compensated interpolation. This approach allows the full static and dynamic resolution ava... View full abstract»

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  • Subscription management in satellite TV services in Europe-structure and objectives

    Publication Year: 1988, Page(s):333 - 335
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (184 KB)

    The requirements of a complete system for the management of subscription television using MAC and other appropriate transmission systems have not been widely addressed. Concentration on the arguments about transmission standards and the route to High Definition TV has sometimes obscured the need to deliver complete arrangements for the handling of payment for direct to home television. The authors... View full abstract»

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  • The EUREKA HDTV project-philosophy and practice

    Publication Year: 1988, Page(s):430 - 437
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (1244 KB)

    A look at the technology behind the EUREKA HDTV project and the progress to date View full abstract»

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  • Radio Data Services in UK Independent Local Radio

    Publication Year: 1988, Page(s):316 - 317
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (116 KB)

    Most professional FM radio transmitters are capable of accepting baseband signals from 40 Hz to 100 kHz. Stereo programme transmissions require a base bandwidth up to 53 kHz, which leaves a potential capacity for other baseband signals in the range 53 to 100 kHz. In the United States this capacity has been exploited for some years, and various systems are in operation under the generic title of Su... View full abstract»

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  • The next generation of automated record/playback systems

    Publication Year: 1988, Page(s):418 - 421
    Cited by:  Patents (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (240 KB)

    Automation of video tape in the television service presentation system is now economically feasible using current technology. What is required is a system that feeds the daily program and commercial sequence with a minimum of human intervention, and that switches between the outputs of a set of dedicated transports to provide continuous material for each program service. The system must also affor... View full abstract»

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  • PRIMICON pick-up tube for EUREKA HDTV broadcasting program

    Publication Year: 1988, Page(s):181 - 184
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (228 KB)

    In the EUREKA project, dedicated to establish a high definition television system, the provision of the key components is critical. The HDTV studio camera is the main source of HDTV image production, and its performance characteristics are governed by those of the camera tube. Because of the considerable leap in performance required for HDTV, the camera tubes used will have to be a generation ahea... View full abstract»

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  • Digital audio broadcasting: optimizing of a combined concept of source and channel coding with respect to subjective criteria

    Publication Year: 1988, Page(s):360 - 363
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (304 KB)

    In the case of digital audio broadcasting for mobile receivers, a particularly hostile transmission path has to be considered, and the principles of modulation and channel coding have to be selected carefully with respect to the characteristics of the transmission path, and with respect to the desired behaviour of degradation. In this paper the authors propose a channel coding scheme on the basis ... View full abstract»

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  • Test equipment for the measurement of static and dynamic resolutions of television cameras

    Publication Year: 1988, Page(s):243 - 247
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (244 KB)

    Resolution is an important parameter which tends to quantify the ability of a camera to correctly reproduce picture details. Unfortunately, a good static resolution may not necessarily guarantee an acceptable resolution of the camera for moving pictures, and the assessment of the overall quality must consider the dynamic resolution. The purpose of this paper is to report on a test equipment, desig... View full abstract»

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  • Fixed, adaptive, and motion compensated interpolation of interlaced TV pictures

    Publication Year: 1988, Page(s):220 - 223
    Cited by:  Papers (5)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (308 KB)

    All current broadcast TV systems make use of interlace to reduce the bandwidth required. However this makes it difficult to perform processes such as freeze frame, slow motion, picture geometry manipulation, standard conversion and display up-conversion. These would prefer to treat each field separately, but each field contains only half of the TV lines. The ability to perform good interpolation o... View full abstract»

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  • RF components for high power and super power UHF-TV transmitting systems

    Publication Year: 1988, Page(s):105 - 109
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (296 KB)

    The super power and tall tower has required the development and use of `all waveguide' RF components rather than the conventional coax RF components. As the power on the coax line increases, the diameter must also increase to keep the temperature rise on the inner conductor to within safe limits. For any frequency there is an upper limit on the diameter; above which moding will occur and prevent t... View full abstract»

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  • Digital HDTV signal transmission on optical fibre

    Publication Year: 1988, Page(s):280 - 283
    Cited by:  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (216 KB)

    Referring to the optical fibre support and knowing the incomparable possibilities offered by transmission on such a support, Thomson-CSF have implemented some transmission and reception terminal equipment: an analog HDTV RGB signal transmission system on multimode or monomode optical fibre, the transmission channel bandwidth is 120 MHz (-3dB); and a serial digital HDTV signal transmission system o... View full abstract»

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  • The evaluation of narrow-band HDTV transmission standards such as HD-MAC

    Publication Year: 1988, Page(s):49 - 53
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (324 KB)

    The authors consider the concept of quality in HDTV, and discuss design issues in HDTV emission systems. Viewing conditions for HDTV assessments are described, and the application of methodology to HDTV emission systems and compatibly-received pictures is discussed, and the results considered View full abstract»

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