Title: Holographic ROM system having reflective data mask
Application Number: 200510005560 Application Date: 2005.01.19
Publication Number: 1707638 Publication Date: 2005.12.14
Approval Pub. Date: 2007.07.18 Granted Pub. Date: 2007.07.18
International Classifi-cation: G11B7/006;G03H1/04
Applicant(s) Name: Daewoo Electronics Corp. Address:
Inventor(s) Name: Moon Jin Bae
Attorney & Agent: wang yang
Abstract:
    A holographic read-only memory (ROM) mastering system includes a conical mirror for refracting a reference beam to generate conical reference beams to be incident on a storage medium in a first angle; and a reflective data mask, having a data pattern for data to be recorded in the storage medium, for modulating and reflecting some of the conical reference beams passing through the storage medium to generate modulated conical reference beams to be incident on the storage medium in a second angle. The modulated conical reference beams are interfered with the conical reference beams incident on the storage medium, to thereby record an interference pattern based on the interfering operation in the storage medium. The first and the second angles have a relationship of a complementary angle with respect to the vertical direction of the storage medium.
Time: 6
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