Search Method
First Claim
1. A search method for a recording medium having a hologram recording layer in which a plurality of holograms are recorded and an address layer in which address information is recorded, wherein:
- a search light is generated from a search condition;
the search light is irradiated onto a hologram recorded in the hologram recording layer; and
when the search light interferes with the hologram and a reproduction light is generated, address information of the hologram from which the reproduction light is generated is identified using an address light that reads the address information and the identified address information is recorded, and when the search light does not generate the reproduction light from the hologram, the search light is irradiated onto another hologram recorded in the hologram recording layer.
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Accused Products
Abstract
A search method of efficiently retrieving information is provided.
A search light 21 is generated from a search condition (S1). The search light is irradiated onto a hologram 104a recorded in a hologram recording layer 104 (S2). When the search light interferes with the hologram and a reproduction light is generated, address information of the hologram from which the reproduction light is generated is identified using an address light 23 that reads the address information. The identified address light is recorded (S3). When the search light does not generate the reproduction light from the hologram, the search light is irradiated onto another hologram 104b recorded in the hologram recording layer.
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Citations
9 Claims
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1. A search method for a recording medium having a hologram recording layer in which a plurality of holograms are recorded and an address layer in which address information is recorded, wherein:
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a search light is generated from a search condition; the search light is irradiated onto a hologram recorded in the hologram recording layer; and when the search light interferes with the hologram and a reproduction light is generated, address information of the hologram from which the reproduction light is generated is identified using an address light that reads the address information and the identified address information is recorded, and when the search light does not generate the reproduction light from the hologram, the search light is irradiated onto another hologram recorded in the hologram recording layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification