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Image: Video tape scanning diagrams

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Description: Diagrams showing the difference between helical-scan and transverse-scan recording techniques used in early video tape recorders.
Title: Video tape scanning diagrams
Credit: Retrieved August 3, 2014 from Joseph Rolzen, "Television Tape Techniques Today" in Broadcast Engineering magazine, Howard W. Sams and Co. Inc., New York, Vol. 5, No. 11, November 1963, p. 20 on American Radio History] website
Author: Joseph Rolzen
Permission: This 1963 issue of Broadcast Engineering magazine would have the copyright renewed in 1991. Online page scans of the Catalog of Copyright Entries, published by the US Copyright Office can be found here. [1] Search of the Renewals for Periodicals for 1978 to present show no renewal entries for Broadcast Engineering. Therefore the magazine's copyright was not renewed and it is in the public domain.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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