System using a rotating medium for recording cinematographic picture images
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United States of America Patent
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Aug 30, 1983
Issued Date -
N/A
app pub date -
Jun 4, 1981
filing date -
Jun 9, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A recording system records a television video signal of 60 fields per second converted from a signal of the picture image content of a cinematographic film for projection at 24 film frames per second, in a manner such that the video signal has parts in each of which the picture image content of one and the same film frame continues during at least 4 fields thereof, along a spiral track on a rotating recording medium rotating at a rotational speed of 900 revolutions per second at a recording rate of 4 fields per revolution of the recording medium. The rotating recording medium thus recorded has a part on which the picture image content of one and the same film frame is recorded over a part of a length of the track corresponding to at least one revolution of the recording mediu
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