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IEEE Transactions on Broadcasting

Issue 3 • Date Sep 1991

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Displaying Results 1 - 7 of 7
  • Predictive block-matching motion estimation for TV coding. I. Inter-block prediction

    Publication Year: 1991, Page(s):97 - 101
    Cited by:  Papers (36)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (465 KB)

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  • Predictive block-matching motion estimation for TV coding. II. Inter-frame prediction

    Publication Year: 1991, Page(s):102 - 105
    Cited by:  Papers (43)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (313 KB)

    For pt.I, see ibid., vol.37, no.3, p.97-101 (1991). A predictive block-matching motion estimation scheme was implemented for efficient video code design. The scheme is based on the so-called inertia effect of natural video scenes and takes advantage of the motion vectors obtained in the previous frames. The benefits from this prediction process are threefold. First, the searching area is greatly r... View full abstract»

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  • Analysis of distortion in a PAM-FM television transmission and application to the MUSE signal

    Publication Year: 1991, Page(s):89 - 96
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    From the viewpoint of signal format, the MUSE signal for HDTV-DBS transmission is a kind of pulse amplitude modulation (PAM) signal. Since PAM signals have never been used for TV signal transmission, the author investigated the relationship between distortion due to FM transmission and picture quality. The relationship is made clear by the following two steps. First, a rating function, by which th... View full abstract»

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  • Using elevated radials with ground-mounted towers

    Publication Year: 1991, Page(s):77 - 82
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    Computer-modeling exercises are reported which indicate that it is possible to use four elevated radials together with a conventional ground-mounted base-insulated tower for MF broadcasting purposes, and achieve the same radiated field strength as that emitted by a similar monopole using 120 buried radials. Several different methods of attaching the radials to the tower were investigated, along wi... View full abstract»

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  • MF AM transmitting asymmetric vertical dipole

    Publication Year: 1991, Page(s):106 - 114
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB)

    An asymmetric vertical dipole is proposed as an MF AM-broadcast station transmitting antenna. This kind of vertical dipole antenna uses the supporting guys as part of the radiating structure permitting an efficient radiation with a strong surface wave. It produces less high-angle radiation compared to a classic buried-ground-plane monopole of similar height. Analysis data for near fields and power... View full abstract»

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  • Optical digital transmission of HDTV signals for `contribution' use

    Publication Year: 1991, Page(s):83 - 88
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    The key technologies for a 1.2 Gb/s HDTV optical digital transmission system for contribution service use are addressed. A wide-dynamic-range optical receiver is described. Attained average received optical power for an error rate of 10-9 was from -6 dBm to -38 dBm, with an optical dynamic range of 32 dB. This system provides for transmission lengths from a few meters to up to 80 km. It... View full abstract»

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  • On the sibilance problem in FM sound transmission

    Publication Year: 1991, Page(s):115 - 120
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    An explanation for the sibilant distortion on FM sound transmissions is given. According to the proposed model, the effect is due to an overmodulation of the FM carrier, where the instantaneous frequency is proportional to the modulating signal. Pre-emphasis makes the effect worse, and the broadcast peak program meters (PPMs) do not indicate peaks in random signals. The explanation is backed up by... View full abstract»

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IEEE Transactions on Broadcasting covers the field of broadcast technology, including the production, distribution, transmission, and propagation aspects of broadcasting.

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Editor-in-Chief
Yiyan Wu
Communications Research Ctr Canada