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Information recording and reproduction methods using oscillation medium or transducer

  • US 5,291,472 A
  • Filed: 06/16/1992
  • Issued: 03/01/1994
  • Est. Priority Date: 08/06/1982
  • Status: Expired due to Term
First Claim
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1. A method for recording and reproducing information comprising:

  • (a) recording information in the form of data bits comprised of closely spaced microcrystals on a metal recording layer that is supported by a substrate;

    (b) reproducing a selected portion of the recorded information by generating a radiation beam, directing said radiation beam at a selected portion of said recording layer, and effecting controlled relative movement between said beam and said selected portion to cause the microcrystals that are irradiated by said beam to act as microscopic antennas broadcasting radiant energy; and

    (c) photoelectrically detecting the radiant energy that is broadcasted by said selected microcrystals.

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