Ginsburg
Patent No. 2,956,114 Videotape Recorder
The lead inventor of the modern videotape recorder, Charles P. Ginsburg was born in 1920. After graduating with a B.A. from San Jose State in 1948, he worked as a studio and transmitter engineer at a radio station in the San Francisco Bay area. In 1952, he joined the Ampex Corporation, where he held the position of Vice-President of Advance Development from 1975 until his retirement in 1986.
Tape recording of television signals dates to just after World War II, when audio tape recorders were pushed to record the very high frequency signals needed for television. There early machines ran the tape at very high speeds--240 inches per second--to achieve high frequency response.
Ginsburg led the Ampex research team to develop a new machine that ran the tape at a much slower rate. Ginsburg's approach included a new development--the recording heads now rotated at high speed, allowing the necessary high frequency response. The new machine was first used by CBS TV in 1956.
For his developments in video recording, Ginsburg won the David Sarnoof Gold Medal of the Society of Motion Picture Engineers and the Vladimir K. Zworykin Television Prize of the Institute of Radio Engineers in 1957.
The above information was supplied by the National Inventors Hall of Fame Foundation, Inc., Room 1D01-Crystal Plaza 3, 2021 Jefferson Davis Highway, Arlington, Virginia 22202. Videotapes and printed materials are currently available. For more information, visit the Foundation's web site at http://www.invent.org
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