Dielectric reproducing apparatus, dielectric recording apparatus, and dielectric recording/reproducing apparatus
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United States of America Patent
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Feb 26, 2008
Grant Date -
Apr 22, 2004
app pub date -
Sep 10, 2003
filing date -
Sep 11, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A dielectric reproducing apparatus is provided with: a probe for applying an electric field to a dielectric material of a dielectric recording medium; a return electrode for returning the electric field applied from the probe; an inductor placed between the probe and the return electrode; an oscillator which oscillates at a resonance frequency determined from the inductor and a capacitance formed in the dielectric material just under the probe; an alternating current (AC) signal generation device for generating an AC signal which is applied to the probe; a frequency modulation (FM) demodulator for demodulating a FM modulation signal modulated by the capacitance corresponding to the polarization state owned by the dielectric material just under the probe; and a phase-shift keying (PSK) demodulator for reproducing data from the demodulated signal.
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