helical scan on:
[Wikipedia]
[Google]
[Bing]
[Yahoo]
[DuckDuckGo]
[Baidu]
Helical scan is a method of recording high-frequency signals on
Bcn-scanner-head.jpg,
Sony U.S. patent for U-matic videotape cassette
filed 1971.
Sony U.S. patent for design of U-matic deck
filed 1971.
video preservation and conservation museum
* The history of television, 1942 to 2000 By Albert Abramson, page 93.
Ampex page
in the Experimental TV Center {{Homevid Audiovisual introductions in 1953 Film and video technology Japanese inventions Tape recording
Helical scan is a method of recording high-frequency signals on magnetic tape
Magnetic tape is a medium for magnetic storage made of a thin, magnetizable coating on a long, narrow strip of plastic film
Plastic film is a thin continuous polymeric material. Thicker plastic material is often called a "sheet". These ...
. It is used in open-reel video tape recorder
A video tape recorder (VTR) is a tape recorder designed to record and playback video
Video is an electronic medium for the recording, copying, playback, broadcasting, and display of moving visual media. Video was first developed ...
s, video cassette recorders, digital audio tape recorders, and some computer tape drive
A tape drive is a data storage device
Data storage is the recording (storing) of information (data
In the pursuit of knowledge
Knowledge can be defined as awareness of facts or as practical skills, and may also refer to ...
s.
History
Earl E Masterson from RCA patented the first helical scan method in 1950 after stealing it from German engineer Eduard Schüller. Eduard Schüller developed an actually working helical scan method of recording in 1953 while working at AEG. With the advent of television broadcasting in Japan in the early 1950s, they saw the need for magnetic television signal recording. Dr. Kenichi Sawazaki developed a prototype helical scan recorder in 1954.Gallery
Type B videotape
1–inch type B VTR (designated Type B by SMPTE) is a reel-to-reel analog recording video tape format developed by the Bosch Fernseh division of Bosch in Germany in 1976. The magnetic tape
Magnetic tape is a medium for magnetic st ...
video scanner head
Vxa1-drive-nocover-nobezel-front.jpg, rotary head visible in a VXA computer tape drive
Vxa1-drive-nocover-top-front.jpg, VXA tape drive, alternate view of rotary head and loading mechanism
See also
* Type A videotape * 1 inch type B videotape * 1 inch type C videotape * IVC videotape format about the IVC 2 inch helical VTR, Model 9000 *Video tape recorder
A video tape recorder (VTR) is a tape recorder designed to record and playback video
Video is an electronic medium for the recording, copying, playback, broadcasting, and display of moving visual media. Video was first developed ...
(VTR)
*Vision Electronic Recording Apparatus
Vision Electronic Recording Apparatus (VERA) was an early analog recording videotape
Videotape is magnetic tape used for storing video
Video is an electronic medium for the recording, copying, playback, broadcasting, and display ...
* Ampex 2 inch helical VTR
* Symmetric Phase Recording
References
External links
Sony U.S. patent for U-matic videotape cassette
filed 1971.
Sony U.S. patent for design of U-matic deck
filed 1971.
video preservation and conservation museum
* The history of television, 1942 to 2000 By Albert Abramson, page 93.
Ampex page
in the Experimental TV Center {{Homevid Audiovisual introductions in 1953 Film and video technology Japanese inventions Tape recording