Proceedings of the IEE - Part IIIA: Television

Proceedings of the IEE - Part IIIA: Television

Online ISSN 2054-0760
Print ISSN 2050-5507

Published in 1952, the Proceedings of the IEE - Part IIIA: Television was a special volume of the Proceedings of the IEE - Part III: Radio and Communication Engineering, covering the Proceedings at the Convention on the British Contribution to Television, which was held from 28th April-2nd May 1952.

This journal was previously known as Journal of the Institution of Electrical Engineers - Part IIIA: Radiocommunication 1947-1947. ISSN 2050-5493. more..

Volumes & issues:

Volume 99 (1952)

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Proceedings at the Convention on the British Contribution to Television
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- p. 1 –4 (4)
A 5:1 television zoom lens
- Author(s): H.H. Hopkins
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- p. 109 –112 (4)
Television studio lighting equipment
- Author(s): S. Lewis Johnson
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- p. 113 –114 (2)
  The object of the paper is to outline briefly the design and performance features of lighting equipment used in television studios. Almost all the lighting equipment, together with the appropriate optical and electrical accessories as used to-day, is the result of considerable development over a number of years in film studios, which may be likened to television studios in so far as lighting requirements are concerned. This does not mean, however, that the similarity of lighting-equipment requirements, convenient as it is, will continue, and indeed there are several original pieces of equipment designed to satisfy the peculiar needs of television lighting.
Television recording
- Author(s): W.D. Kemp
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- p. 115 –127 (13)
  Various means of recording vision-frequency signals are considered. For high-definition television, it is concluded that the information must be recorded transversely to the direction of movement of the recording medium, and that the transverse movement must be achieved electrically. Photographic recording appears to be the only practicable method.The film may be moved at constant velocity or intermittently, and some known systems are classified under these headings and described with their advantages and disadvantages, particular attention being given to the two methods now in use by the B.B.C.Various factors affecting the performance of television-recording cameras are then discussed, such as picture joins, interlacing, loss of definition on movement, optical efficiency, film stability, emulsion pil-up, and spot-position modulation.A suitable arrangement of the vision-frequency equipment is dealt with, and the necessary electrical corrections are described. The factors governing the choice of a cathode-ray tube for recording purposes are discussed, while some possible improvements are indicated.The various transfer characteristics concerned have been measured, and the possibility of contrast correction is discussed, together with possible ways of improving the overall performance, such as highgamma recording. The conditions for making satisfactory positive prints direct from negative television pictures are stated.Some conclusions based on operating experience of continuous and intermittent systems are then given.
Summaries of Television Convention papers
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- p. 12 –24 (13)

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Proceedings of the IEE - Part IIIA: Television

Volumes & issues:

Volume 99 (1952)

Latest content

Proceedings at the Convention on the British Contribution to Television

A 5:1 television zoom lens

Television studio lighting equipment

Television recording

Summaries of Television Convention papers

Most viewed content for this Journal

Most cited content for this Journal