A Wireless Digital Television Camera

Metadata

Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: SMPTE J
Volume: 110, No. 6, pp. 365–371
Abstract: A wireless television camera uses a radio link to send its pictures to the control gallery or scanner. Digital modulation offers the possibility of high reliability, perhaps enabling all cameras to be wireless. A prototype wireless digital camera has been built at BBC R&D, based on the DVB-T standard. The prototype uses an MPEG-2 video encoder, provided by industry; a compact COFDM modulator; and a digital transmitter, both designed at BBC R&D. Initial trials have shown that very rugged operation can be obtained with a simple omnidirectional transmit antenna and a fixed receive antenna, in situations where large amounts of multipath would make an analog system unusable. Outdoors, care must be taken to maintain line-of-sight operation.
Publication Date: 2001-06-01
DOI: 10.5594/J11604
ISSN: Print: 0036-1682
Link: https://doi.org/10.5594/J11604
Author(s): C. ClarkeBritish Broadcasting Corp. Research and Development Dept., U.K.
bio
Chris Clarke graduated from Imperial College, London, and joined the BBC Research Department in 1970. For 30 years he has worked in many aspects of digital television including video coding, composite PAL, and NTSC decoding and television standards conversion. He led the team that developed the prototype hardware used for the first broadcast of signals conforming to the then newly agreed DVB-T standard in April 1996. He developed the single-card DVB-T modulator used in the wireless digital television camera.
M. MacCormackBritish Broadcasting Corp. Research and Development Dept., U.K.
bio
Mike MacCormack has been producing and directing documentaries for BBC TV for over 20 years. He believes that he was the first BBC producer to use videotape on a full length single camera documentary (1985) and the first to use digital nonlinear editing (1991). He was attached to BBC R&D for six months in 1999/2000 to provide production advice to the team designing the wireless digital television camera.
J. MitchellBritish Broadcasting Corp. Research and Development Dept., U.K.
bio
Justin Mitchell joined BBC R&D in 1993 after graduating from Cambridge University and is currently a senior engineer. He has worked on a range of projects including those related to COFDM transmission and reception and MPEG-2 coding. Mitchell sat on the standardization committee that drafted the DVB-T specification and is the project leader for an ASIC development.
P. MossBritish Broadcasting Corp. Research and Development Dept., U.K.
bio
Peter Moss joined BBC Designs Department in 1980 after gaining a degree in physics from the University of Oxford. Initially involved in the design of transmitters and receivers for broadcast and ancillary services. he is now a senior R&D engineer at BBC Research and Development. In recent years he has worked in the areas of amplifier linearization for DAB and DVB applications, responsible for the Cartesian Loop PA design currently used in DAB broadcast transmitters. He is part of a team developing a wireless digital television camera based on the DVB-T COFDM standard where he has contributed in the areas of system simulation and RF design.
J. ZubrzyckiBritish Broadcasting Corp. Research and Development Dept., U.K.
bio
John Zubrzycki joined BBC Research in 1982 after gaining a Ph.D. at Kings College, London. He worked on the development of a high-capacity fiber-optic network for digital studios using dense-WDM as part of a European collaboration. In 1992, he worked in another European project, MBS, followed by its successor, SAMBA, developing broadband mobile networks and demonstrated the technical feasibility of using such networks for sending contribution signals for television program production. Currently, he is the project manager of the Digital Radio Camera Project, on which this paper is based.
Copyright: © 2001 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1. Evans R. H. Melvin C. E. Zubrzycki J. T. , “The Development of the Switched Horn Radio Camera System.” BBC R&D Dept. Rpt. 19936/13. EXTERNAL
2. Zubrzycki J. T. , “MBS Experimental Digital Radio Camera Trials.” Proc. Intl. Broad casting Convention 1998 . pp. 391 – 396 . Amsterdam, Sept. 1998. EXTERNAL

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C. Clarke, M. MacCormack, J. Mitchell, P. Moss, and J. Zubrzycki; A Wireless Digital Television Camera, SMPTE Journal ( Volume: 110, Issue: 6, June 2001); SMPTE, 2001. Available at https://doi.org/10.5594/J11604

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C. Clarke, M. MacCormack, J. Mitchell, P. Moss, and J. Zubrzycki; A Wireless Digital Television Camera, SMPTE Journal ( Volume: 110, Issue: 6, June 2001); SMPTE, 2001. Available at https://doi.org/10.5594/J11604

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<span class="citation">C. Clarke, M. MacCormack, J. Mitchell, P. Moss, and J. Zubrzycki; <cite>A Wireless Digital Television Camera</cite>, SMPTE Journal ( Volume: 110, Issue: 6, June 2001); SMPTE, 2001. Available at <a href="https://doi.org/10.5594/J11604" target="_blank" rel="noopener">https://doi.org/10.5594/J11604</a></span>

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C. Clarke, M. MacCormack, J. Mitchell, P. Moss, and J. Zubrzycki; A Wireless Digital Television Camera, SMPTE Journal ( Volume: 110, Issue: 6, June 2001); SMPTE, 2001
doi: 10.5594/J11604
url: https://doi.org/10.5594/J11604

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C. Clarke, M. MacCormack, J. Mitchell, P. Moss, and J. Zubrzycki; <cite id="bib-10-5594-j11604">A Wireless Digital Television Camera</cite>, SMPTE Journal ( Volume: 110, Issue: 6, June 2001); SMPTE, 2001
<span class="doi">10.5594/J11604</span>
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