Early Television System Diagram

Autor:

C.G.B. Rowe

Credit:

Scanned from C. G. B. Rowe, "Television Comes to the Home" in Radio News magazine, published by Experimenter Publishing, New York, NY, Volume 9, Number 10, April 1928, p. 1098. The page numbers were on an annual basis, not per issue. This issue had pages 1089 to 1192.

Krótki link:

https://plwiki.pl/b/18f3

źródło:

Wikimedia Commons

Wymiary:

1152 x 630 Pixel (380189 Bytes)

Opis:

Diagram of an early mechanical-scan television system. This technology was used in the first experimental television broadcasting stations in the 1920s and 1930s, before it was replaced by modern electronic-scan television systems in the 1940s

Licencja:

Public domain

Komentarz do licencji:

The copyright for this 1928 issue of Radio News would have to be renewed in 1955. Online page scans of the Catalog of Copyright Entries, published by the US Copyright Office can be found here. http://onlinebooks.library.upenn.edu/cce/ A search of the Renewals for Periodicals from 1954 to 1957 shows no renewal entries for Radio News.

The copyright on the magazine was not renewed and it is in the public domain.