Optical memory medium and write and read apparatus using the...

G - Physics – 11 – B

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G11B 7/00 (2006.01) G11B 7/12 (2006.01) G11B 7/135 (2006.01) G11B 7/244 (2006.01) G11B 7/253 (2006.01) G11B 9/00 (2006.01) G11B 11/00 (2006.01)

Patent

CA 2118338

There is disclosed an optical memory medium comprising a flat plate coated with a thin film of a photolytic residual group. Also disclosed is an optical recording apparatus comprising an optical probe having a microscopic aperture on a probe end thereof, a light source, X-Y-Z position control means, and a controller for controlling the apparatus as a whole. Further disclosed is an apparatus for reading the optical memory medium comprising a friction detecting probe, an X- Y-Z position control means and a controller for controlling the apparatus as a whole. Information may also be written and read at high densities less than the wavelength of light using an apparatus for writing to and reading from an optical memory piezoelectric medium comprising a piezoelectric element coated with a thin film of a photolytic residual group, an optical probe having a microscopic aperture on the probe end thereof, a light source, an X-Y-Z position controller and a sensor for measuring the resonance characteristics of the piezoelectric element and a controller for controlling the apparatus as a whole.

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