Title:
データ記録及び読出
Document Type and Number:
Japanese Patent JP2013541797
Kind Code:
A
Abstract:
The invention provides for a recording method comprising the steps of modulating a first light beam; directing a second light beam to interfere with the first light beam to produce an interference pattern in a region of a recording medium; forming an optical device in the medium responsive to the interference pattern, wherein optical characteristics of the optical device are varied responsive to variations in the interference pattern. A method of playback, a recording and/or reading head and data carriers are also claimed. An example relates to a full diffraction analogy of gramophone recording. The interference of two beams, one of which is functionally linked to an audio signal, results in a change of the diffractive structure that instantly reflects the change of the input signal. On playback the diffracted light beam oscillates in the same way as the gramophone needle would vibrate. Another aspect of the disclosure relates to multilevel digital recording using holographic and/or diffractive structures.
Inventors:
Kotaka, Revol
Polyvka, Leos
Zukoff, Vladimir
Polyvka, Leos
Zukoff, Vladimir
Application Number:
JP2013528726A
Publication Date:
November 14, 2013
Filing Date:
September 22, 2011
Export Citation:
Assignee:
Z Nano Laboratory, Limited
International Classes:
G11B7/0065; G02B5/18; G03H1/04; G03H1/22; G11B7/003; G11B7/0037; G11B7/0045; G11B7/005; G11B7/135
Domestic Patent References:
| JPS4745845A | ||||
| JPS5062454A | 1975-05-28 | |||
| JPS493648A | 1974-01-12 | |||
| JPS50142046A | 1975-11-15 | |||
| JPS5041567A | 1975-04-16 | |||
| JPS5033784B1 | 1975-11-04 | |||
| JP2009186638A | 2009-08-20 |
Foreign References:
| US3865996A | 1975-02-11 | |||
| US5519517A | 1996-05-21 |
Attorney, Agent or Firm:
Seiji Ohno
Koji Morita
Kenichi Katayama
Mamoru Suzuki
Shinji Kato
Osamu Tsuda
Koji Morita
Kenichi Katayama
Mamoru Suzuki
Shinji Kato
Osamu Tsuda