Hologram memory medium, apparatus and method of recording and/or reproducing information with respect to the hologram memory medium
AssigneeSamsung Electronics Co., Ltd.
InventorsIkuo Aoki, Yoshitaka Takahashi
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Abstract
A method of recording/reproducing information on/from a card-shaped hologram memory medium is provided in which an information recording/reproducing optical system can be conveniently controlled to increase a recording capacity of the card-shaped hologram memory medium. In the method, pieces of information are sequentially recorded in a data recording/reproducing area of the card shaped hologram memory medium along a predetermined route, while maintaining a predetermined distance between pieces of information.
Claims30
A method of recording information on a card shaped hologram memory, comprising sequentially recording information, in the form of interference fringes, on a data area of the card shaped hologram memory medium along a predetermined route, while maintaining a predetermined distance between interference fringes of information.
A method comprising:
- obtaining a hologram memory medium having a data area for storing information;
- and
- sequentially recording the information, in the form of interference fringes, on the data area of the hologram memory medium along a predetermined route that spans the entire data area of the hologram memory medium, such that the information is recorded on the data area of the hologram memory medium continuously without operation interruption.
An apparatus comprising:
- a hologram memory medium;
- a recording/reproducing unit arranged to sequentially record information on a data area of the hologram memory medium, in the form of interference fringes along a predetermined route that spans an entire data area of the hologram memory medium, by irradiating an object beam corresponding to information to be recorded and a reference beam onto the hologram memory medium along the predetermined route, and to sequentially reproduce information from the data area of the hologram memory medium by irradiating the reference beam to the interference fringes along the predetermined route;
- and
- a location control unit arranged to control locations of the signal beam and the reference beam irradiated from the data recording/reproducing unit.
A hologram memory medium, comprising:
- a pair of substrates;
- and
- a hologram recording layer disposed between the pair of substrates, for recording information in the form of interference fringes,
- wherein one substrate is provided with a series of pits in a concave or convex shape for storing servo information needed for recording information, and
- wherein the information is sequentially recorded, in the form of interference fringes, along a predetermined route continuously without operation interruption.
Dependencies are inferred from the claim text.