Holographic ROM system

Details Holographic ROM system Holographic ROM system

2007-06-05

2007-06-05

Hindi, Nabil (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S116000

Reexamination Certificate

active

10849223

ABSTRACT:
A holographic ROM system of the present invention includes a holographic disk for storing information in a form of hologram; a pick-up module for optically reading the information stored in the holographic disk and producing an electrical signal in response to what has been read; and a control unit. The pick-up module has at least two light sources which are controlled by the control unit and a temperature measuring device for measuring an operating temperature of said at least two light sources, and the temperature measuring device transmits a temperature signal indicating the operating temperature to the control unit.

REFERENCES:
patent: 4733253 (1988-03-01), Daniele
patent: 2002/0061033 (2002-05-01), Kitaoka et al.
patent: 2002/0075776 (2002-06-01), Kasazumi et al.
patent: 2003/0223101 (2003-12-01), Curtis et al.
patent: 2002-183955 (2002-06-01), None

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