RCS StereoVision
"Southam Videotel Limited of Toronto and Retention Communication Systems Incorporated of New York have announced the signing of an agreement whereby Southam Videotel Limited will be exclusive distributors of the revolutionary new Retention tm A/V system in Canada. Under this agreement, Southam Videotel Limited will also supply the necessary pulsing and loading of the Retention cassettes in Canada. This new audio visual system combines super 8mm colour strip film and a separate magnetic sound track, each in a continuous loop in a single pocket size cassette, weighing less than 3 ounces, thus offering low-cost maihng. The image can be projected externally, or onto its own self-contained rear screen. The Retention A/V set and cassette system offers flexibility, clarity, and features normally available only in multiple systems. The projector, which weighs only 15 pounds, converts from the 48 square inch rear screen to large screen projection at the flip of a switch. The stop, start, and volume controls are on the front for easy access. A receptable allows for external speakers for large screen projection; or for training purposes up to 6 sets of headphones may be used, along with a remote control responsive stop-start switch. The set is fully automatic, and the track can be programmed to advance the picture at any speed up to 8 frames per second, or hold on any one frame indefinitely. The unique cooling system allows full brilliance without film damage. The cassette has the capacity for up to 3,600 frames of visuals or 30 minutes of audio programming, and can be removed at any time during the program. It will resume playing where it left off when re-inserted, and can be pre-programmed to stop as many times as needed when used in a training situation. For additional information on this unique new Retention system, please write or phone Southam Videotel Limited, 1450 Don Mills Road, Don Mills, Ontario. (416)499-7552". Cinema Canada magazine, 1972.
US patents: 3,610, 747 Cartirdge-Loaded Film Strip Projector, Particularly For Narrow Film - filed August 22 1968 - patented October 5 1971; 3,733,119 Audio-Visual System, filed December - filed December 14 1970 - patented May 15 1973; 3,669, 374 Combined Endless Loop Film And Endless Loop Magnetic Tape Cartridge - filed April 23 1979 - patented June 13 1972.