In some early prototype linear video tape recording systems developed in the early 1950s from companies such as Bing Crosby Enterprises, RCA, and the BBC's VERA, the tape speed was extremely high, over , to adequately capture the large amount of image information. The need for a high linear tape speed was made unnecessary with the introduction of the now-obsolete professional Quadruplex system in 1956 by Ampex, which segmented the fields of a television image by recording (and reproducing) several tracks at a high-speed across the width of the tape per field of video by way of a vertically spinning headwheel with 4 separate video heads mounted on its edge (a technique called "transverse scanning"), allowing for the linear tape speed to be much slower. Eventually, transverse scanning was accompanied by the later (and less-expensive) technology of helical scanning, which could record one whole field of video per helically-recorded track, recorded at a much lower angle across the width of the tape by the head spinning in the near-horizontal plane, instead of vertically.