From then it became clear that'rotating-head'helical scan recorders were the way forward with superior sound and picture quality.
22.
Video cassette recorders differ substantially from audio recorders due to the use of a rotating magnetic head that uses a helical scan over the tape medium.
23.
There was also documentation that the Apollo 11 moonwalk SSTV was recorded at the Parkes, Australia facility on modified Ampex 2-inch helical scan VTRs.
24.
Since its invention by Kalender in the 1980s, helical scan CT machines have steadily increased the number of rows of detectors ( slices ) they deploy.
25.
It used video tape in a reel-to-reel format, meaning the tape had to be manually threaded around the helical scan video head drum.
26.
The audio data was recorded to the tape in the same fashion that a VCR connected to a PCM adaptor would record to a videotape, by using helical scan recording.
27.
Conventional VHS and Beta formats recorded in a helical scan format, resulting in angled tracks running from the lower edge of the tape to the upper edge some distance down.
28.
Later improvements by other companies, particularly Sony, lead to the development of helical scan and the enclosure of the tape reels in an easy-to-handle videocassette cartridge.
29.
Starting in the 1950s the company began developing video tape recorders, which set the studio standards for decades, and later introduced the helical scan concept that make home video players possible.
30.
Toshiba introduced helical scan technology to the television industry in 1959 . During the 1960s and 1970s, helical scan recording machines were introduced by many manufacturers and marketed all over the world.
