About: Beam-index tube

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The beam-index tube is a color television cathode ray tube (CRT) design, using phosphor stripes and active-feedback timing, rather than phosphor dots and a beam-shadowing mask as developed by RCA. Beam indexing offered much brighter pictures than shadow-mask CRTs, reducing power consumption, and as they used a single electron gun rather than three, they were easier to build and required no alignment adjustments.

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rdfs:label	Beam-index tube (en)
rdfs:comment	The beam-index tube is a color television cathode ray tube (CRT) design, using phosphor stripes and active-feedback timing, rather than phosphor dots and a beam-shadowing mask as developed by RCA. Beam indexing offered much brighter pictures than shadow-mask CRTs, reducing power consumption, and as they used a single electron gun rather than three, they were easier to build and required no alignment adjustments. (en)
dcterms:subject	Early color television History of television Television technology Vacuum tube displays
Wikipage page ID	21858666 (xsd:integer)
Wikipage revision ID	1104563381 (xsd:integer)
Link from a Wikipage to another Wikipage	Carbon Scintillator Electron gun Betamax Early color television Hitachi Photomultiplier tube History of television Television technology Time base generator Electron Aperture grille Magnesium oxide Color television Photodiode Photomultiplier Plasma display Osram Sylvania Vacuum tube displays Display resolution Ernest Lawrence List of Panavia Tornado operators Chromatron LCD Thorn Electrical Industries Transistor Philco Cyber-shot Ferranti Integrated circuits New York University RCA Shadow mask Rockwell Automation Secondary emission Ultraviolet Video tape recorder Cathode-ray tube Trinitron Phosphor Front projection television Amplitude modulated Additive primary
Link from a Wikipage to an external page	http://www.myvintagetv.com/Apple%20PDF%20files/report_782.pdf https://visions4netjournal.com/indextron/ https://web.archive.org/web/20090225030121/http:/www.ieee.org/portal/cms_docs_iportals/iportals/aboutus/history_center/oral_history/pdfs/Law028.pdf https://web.archive.org/web/20090526043337/http:/www.earlytelevision.org/apple_crt2.html http://www.earlytelevision.org/apple_crt.html http://www.earlytelevision.org/apple_crt2.html http://www.google.com/patents%3Fid=-KY3AAAAEBAJ http://www.google.com/patents%3Fid=5IlXAAAAEBAJ http://www.google.com/patents%3Fid=KjIyAAAAEBAJ http://www.google.com/patents%3Fid=aI0PAAAAEBAJ http://www.google.com/patents%3Fid=hwgxAAAAEBAJ http://www.google.com/patents%3Fid=uzpWAAAAEBAJ https://books.google.com/books%3Fid=IxqcYRVu67sC&pg=PA64
sameAs	Beam-index tube Beam-index tube Beam-index tube Beam-index tube
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has abstract	The beam-index tube is a color television cathode ray tube (CRT) design, using phosphor stripes and active-feedback timing, rather than phosphor dots and a beam-shadowing mask as developed by RCA. Beam indexing offered much brighter pictures than shadow-mask CRTs, reducing power consumption, and as they used a single electron gun rather than three, they were easier to build and required no alignment adjustments. Philco led the development of the beam-indexing concept in a series of experimental devices they called the Apple tube. In spite of lengthy development, they were never able to manufacture a cost-competitive indexing tube, and eventually abandoned the concept. The major problem was the cost of the indexing electronics, which in later models required an expensive photomultiplier tube. New detectors and transistor-based electronics led to the system being re-introduced as the Uniray in the 1970s. It was highly competitive in price terms, but competing against greatly improved shadow mask designs and the new Trinitron. Several Japanese companies used the Uniray for a variety of specialist purposes, the best-known being the Sony Indextron series. The system also saw some military use, due to its low sensitivity to magnetic interference, and in such use in the UK it was known as the Zebra tube. (en)
gold:hypernym	Design
prov:wasDerivedFrom	wikipedia-en:Beam-index_tube?oldid=1104563381&ns=0
page length (characters) of wiki page	23694 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Beam-index_tube
is Link from a Wikipage to another Wikipage of	Apple tube Indextron Penetron Geer tube Color television Zebra tube Cathode-ray tube Shadow mask Uniray

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