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- Vision_electronic_recording_apparatus abstract "Vision Electronic Recording Apparatus (VERA) was an early analog recording videotape format developed from 1952 by the BBC under project manager Dr Peter Axon.In order to record high frequencies, a tape must move rapidly with respect to the recording or playback head. The frequencies used by video signals are so high that the tape/head speed is on the order of several meters per second (tens of feet per second), an order of magnitude faster than professional analog audio tape recording. The BBC solved the problem by using 52-centimetre (20 in) reels of magnetic tape that passed static heads at a speed of 5.08 metres per second (16.7 ft/s).VERA was capable of recording about 15 minutes (e.g. 4,572 meters) of 405-line black-and-white video per reel, and the picture tended to wobble because the synchronizing pulses that keep the picture stable were not recorded accurately enough.In order to cope with 625-line PAL or SECAM colour transmissions VERA would likely have required an even faster, and possibly unfeasible, tape speed.Development began in 1952, but VERA was not perfected until 1958. It was given a live demonstration on-air in Panorama on April 14, 1958; Richard Dimbleby, seated by a clock, talked for a couple of minutes about the new method of vision recording with an instant playback, and then the tape was wound back and replayed. The picture was slightly watery, but reasonably watchable, and of course instant playback was something completely new.However by this time it had already been rendered obsolete by the Ampex quadruplex video recording system. This used 5-centimetre (2.0 in) wide tapes running at a speed of 38 cm (15 in) per second. The rapid tape-to-head speed of quadruplex videotape was achieved by spinning the heads rapidly on a drum: the system used, with variations, on all video tape systems ever since, as well as DAT.The BBC scrapped VERA and quickly adopted the Ampex system. It has been suggested that the BBC only continued to develop VERA as a bargaining tool, so it would be offered some of the first Ampex machines produced in unstated exchange for abandoning further work on a potential rival.".
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- Vision_electronic_recording_apparatus wikiPageWikiLink 405-line_television_system.
- Vision_electronic_recording_apparatus wikiPageWikiLink Ampex.
- Vision_electronic_recording_apparatus wikiPageWikiLink Analog_recording.
- Vision_electronic_recording_apparatus wikiPageWikiLink BBC.
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- Vision_electronic_recording_apparatus wikiPageWikiLink Category:History_of_television.
- Vision_electronic_recording_apparatus wikiPageWikiLink Category:Videotape.
- Vision_electronic_recording_apparatus wikiPageWikiLink Digital_Audio_Tape.
- Vision_electronic_recording_apparatus wikiPageWikiLink Helical_scan.
- Vision_electronic_recording_apparatus wikiPageWikiLink Magnetic_tape.
- Vision_electronic_recording_apparatus wikiPageWikiLink PAL.
- Vision_electronic_recording_apparatus wikiPageWikiLink Quadruplex_videotape.
- Vision_electronic_recording_apparatus wikiPageWikiLink SECAM.
- Vision_electronic_recording_apparatus wikiPageWikiLink Video_production.
- Vision_electronic_recording_apparatus wikiPageWikiLink Videotape.
- Vision_electronic_recording_apparatus wikiPageWikiLinkText "Vision electronic recording apparatus".
- Vision_electronic_recording_apparatus encoding CCIR_System_A.
- Vision_electronic_recording_apparatus name "Vision Electronic Recording Apparatus".
- Vision_electronic_recording_apparatus owner BBC.
- Vision_electronic_recording_apparatus type Magnetic_tape.
- Vision_electronic_recording_apparatus use Video_production.
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- Vision_electronic_recording_apparatus wikiPageUsesTemplate Template:Video_storage_formats.
- Vision_electronic_recording_apparatus subject Category:1952_introductions.
- Vision_electronic_recording_apparatus subject Category:History_of_television.
- Vision_electronic_recording_apparatus subject Category:Videotape.
- Vision_electronic_recording_apparatus hypernym Format.
- Vision_electronic_recording_apparatus type Document.
- Vision_electronic_recording_apparatus type Software.
- Vision_electronic_recording_apparatus type Document.
- Vision_electronic_recording_apparatus type Redirect.
- Vision_electronic_recording_apparatus comment "Vision Electronic Recording Apparatus (VERA) was an early analog recording videotape format developed from 1952 by the BBC under project manager Dr Peter Axon.In order to record high frequencies, a tape must move rapidly with respect to the recording or playback head. The frequencies used by video signals are so high that the tape/head speed is on the order of several meters per second (tens of feet per second), an order of magnitude faster than professional analog audio tape recording.".
- Vision_electronic_recording_apparatus label "Vision electronic recording apparatus".
- Vision_electronic_recording_apparatus sameAs Q941831.
- Vision_electronic_recording_apparatus sameAs VERA.
- Vision_electronic_recording_apparatus sameAs VERA.
- Vision_electronic_recording_apparatus sameAs m.01hvg7.
- Vision_electronic_recording_apparatus sameAs Q941831.
- Vision_electronic_recording_apparatus sameAs VERA_格式.
- Vision_electronic_recording_apparatus wasDerivedFrom Vision_electronic_recording_apparatus?oldid=702104519.
- Vision_electronic_recording_apparatus isPrimaryTopicOf Vision_electronic_recording_apparatus.