DocumentCode
1462687
Title
A Television master switcher
Author
Marsden, B.
Volume
20
Issue
1
fYear
1960
fDate
1/1/1960 12:00:00 AM
Firstpage
47
Lastpage
53
Abstract
A survey is made of the standard methods at present in use for switching video signals: the simple mechanical switch, electromechanical relays, and switching systems using thermionic relays. A method of video selection is then described in which the switch elements are made up of semi-conductor diodes. Both master control room and studio type switchers are discussed. Reference is made to current development work in which transistorized pulse generators are being used to achieve vision switching between successive frames of the television waveform.
Keywords
semiconductor diodes; switching; television equipment;
fLanguage
English
Journal_Title
Radio Engineers, Journal of the British Institution of
Publisher
iet
Type
jour
DOI
10.1049/jbire.1960.0008
Filename
5259674
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