It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
I have to say again, how did George manage to mention electromagnetic film imagery almost 50 years before such things entered general use
The videotape recorder would become one of Sony's greatest successes, but it began as another example of the influence of Bing Crosby. John Mullin at Bing Crosby Enterprises demonstrated an experimental 12-head VTR at 100 ips in 1951. The Ampex team led by Charles Ginsburg began work on VTR in October 1951. Ray Dolby, 19, dropped out of school to join the project and helped the team demonstrate the first system Nov. 19, 1952, but with a poor picture. A second system in March 1953 used 4 heads rather than 3 but problems continued with "venetian blinds" effect due to discontinuous recording from one head to the next. By 1954, the Ampex team included with Charles E. Anderson, Shelby Henderson, Fred Pfost, and Alex Maxey. By Feb. 1955 Anderson designed an FM circuit; Ray Dolby rejoined the team after his stint in the Army and designed a multivibrator modulator by Feb. 25; Maxey discovered how to vary tape tension and Pfost developed a new sandwich-type magnetic head. The improved model was shown in Feb. 1956 to Bill Lodge of CBS and other TV people in preparation for the first public demonstration in April. The Mark IV went on public display April 16, 1956, at the Chicago convention of the National Association of Radio and Television Broadcasters, the same day that Ray Dolby demonstrated the older Mark III in Redwood City. The Mark IV, later renamed the VRX-1000, used 2-inch wide 3M tape at 15 ips over rotating head assembly recording at a slant on tape surface with AM sound. During the next 4 weeks, Ampex took orders worth $4.5 million, and took out a trademark on the name "videotape" for its recorder. CBS used a new Ampex VTR for the delayed broadcast of "Douglas Edwards and the News" Nov. 30, 1956. Color videotape was used to record the Nixon-Khrushchev Kitchen Debate in Moscow in 1959.