Audiovisual introductions in 1971

-inch Type E Helical Scan or SMPTE E is an analog recording videocassette format marketed by Sony Electronics Corporation, Matsushita Electric Industrial Co. (Panasonic) and Victor Co. of Japan (JVC). It was initially developed by Sony and shown as a prototype in October 1969, refined and standardized among the three manufacturers in March 1970, and introduced commercially in September 1971 by Sony. The format was branded U-matic by Sony, U-Vision by Panasonic and U-VCR by JVC, referring to the U-shaped tape path as it threads around the video drum.