US 2006/0215527 A1 · Holographic recording medium and recording and reproducing apparatus

Abstract

A holographic recording medium is a medium which records and reproduces data by irradiation with an information beam and a reference beam. This medium includes a user region for recording user data; and a calibration region for storing calibration data for calibrating an element which determines a recording and reproducing characteristic of a recording and reproducing apparatus for recording and reproducing data on/from the recording medium. The calibration data stored in the calibration region includes pattern information for measuring the element determining the recording and reproducing characteristic of the recording and reproducing apparatus.

Claims20

Dependent claims

A holographic recording medium provided for holographic recording and reproduction which records and reproduces data by irradiation with an information beam and a reference beam, comprising:

a user region for recording user data;
and
a calibration region for storing calibration data for calibrating an element which determines a recording and reproducing characteristic of a recording and reproducing apparatus for recording and reproducing data on/from the recording medium, wherein
the calibration data stored in the calibration region includes pattern information for measuring the element determining the recording and reproducing characteristic of the recording and reproducing apparatus.

1 more element

A recording and reproducing apparatus comprising:

a beam emitter for generating an information beam and a reference beam from a single light source;
a recording member for recording data by irradiating a holographic recording medium with the information beam and the reference beam generated by the beam emitter;
a reproducing member for reproducing the data recorded on the medium by irradiating the holographic recording medium with the reference beam;
and
a calibrator for calibrating an element which determines a recording and reproducing characteristic of the recording member or reproducing member by using calibration data recorded on the holographic recording medium.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/190,589Filed 27 Jul 2005

Priority

JP 2005-08208122 Mar 2005

Published

28 Sep 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

G11B 7/00736
Arrangement of the information on the record carrier, e.g. form of tracks , actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped;…:…
G11B 7/0065
Recording, reproducing or erasing methods; Read, write or erase circuits therefor: recording, reproducing or erasing by using optical interference…
G11B 7/00781
On record carriers storing information in the form of optical interference patterns, e.g. holograms: auxiliary information, e.g. index marks,…
G11B 7/24044
Recording layers: for storing optical interference patterns, e.g. holograms; for storing data in three dimensions [3D], e.g. volume storage

Holographic recording medium and recording and reproducing apparatus

Life of this patent

Holographic recording medium and recording and reproducing apparatus

Life of this patent

Abstract

Claims20