quadruplex system造句

• BCE demonstrated a similar color system in February 1955 using a Quadruplex system.
• The quadruplex systems were unable to display video from tape except while playing at normal speed.
• The early machines used the Ampex 2 inch quadruplex system in which the drum had 4 heads and rotated at 14, 400 RPM perpendicular to the tape, so the recorded tracks were transverse to the tape axis.
• The technology rapidly took over the market for video recording, due to its reduced complexity, greater reliability, lower manufacturing and servicing costs, lighter weight, lower energy consumption, and more versatile features, when compared to the quadruplex system.
• The tape was wrapped longitudinally around the drum by idler wheels, so the tape heads, instead of moving across the tape at almost 90?to the direction of motion as in the Quadruplex system, moved across the tape at a shallow angle, recording a long diagonal track across the tape.
• In some early prototype linear video tape recording systems developed in the early 1950s from companies such as Bing Crosby Enterprises, Quadruplex system from 1956, 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 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.