Data reading method

Details Data reading method Data reading method

2008-02-05

2010-11-02

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C359S001000, C359S022000, C359S032000, C382S100000, C382S254000

Reexamination Certificate

active

07826326

ABSTRACT:
A data reading method used in a reading device for reading a holographic storage medium is provided. The holographic storage medium has several data areas. Each data area has several data pages, and each data page forms a data image that has at least one reserved block pattern on the reading device. The reserved block pattern of the data image corresponding to a first data page is searched within a first searching region to obtain a first pattern position. The reserved block pattern of the data image corresponding to a second data page is searched within a second searching region to obtain a second pattern position. A third searching position is then determined according to the first and second pattern positions. The reserved block pattern of the data image corresponding to a third data page is searched within a third searching region whose center is at the third searching position.

REFERENCES:
patent: 7324249 (2008-01-01), Uchida et al.
patent: 2005/0147013 (2005-07-01), Tateishi et al.
patent: 2005/0286388 (2005-12-01), Ayres et al.
patent: 2009/0238058 (2009-09-01), Tateishi et al.

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