Static information storage and retrieval – Read/write circuit – Optical
Reexamination Certificate
2005-04-21
2008-10-07
Elms, Richard T. (Department: 2824)
Static information storage and retrieval
Read/write circuit
Optical
C365S063000, C365S064000, C356S401000, C356S605000, C356S618000, C358S533000, C235S454000, C235S470000
Reexamination Certificate
active
07433256
ABSTRACT:
The invention relates to an information carrier (101) intended to be read and/or written by a periodic array of light spots, said information carrier (101) comprising a data area (105) defined by a set of elementary data areas, a first periodic structure (108) intended to interfere with said periodic array of light spots for generating a first moiré pattern, a second periodic structure (109) intended to interfere with said periodic array of light spots for generating a second moiré pattern, said second periodic structure (109) being arranged perpendicularly to said first periodic structure (108). The invention also relates to an apparatus for reading and/or writing said information carrier (101).
REFERENCES:
patent: 4664524 (1987-05-01), Hattori et al.
patent: 4774400 (1988-09-01), Kimura
patent: 4908656 (1990-03-01), Suwa et al.
patent: 5075562 (1991-12-01), Greivenkamp et al.
patent: 5307152 (1994-04-01), Boehnlein et al.
patent: 0965889 (1999-12-01), None
Written Opinion of the International Searching Authority PCT/IB2005/051306.
De Hoog Thomas Jan
Hendriks Robert Frans Maria
Kastelijn Aukje Arianne Annette
Van Der Walle Peter
Belk Michael E.
Elms Richard T.
Koninklijke Philips Electronics , N.V.
Wendler Eric
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