Medium for recording optically readable data, method for...

Details Medium for recording optically readable data, method for... Medium for recording optically readable data, method for...

2006-12-12

2006-12-12

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

Systems having plural physically distinct independent tracks...

Having layered storage medium

C369S100000, C369S283000

Reexamination Certificate

active

07149173

ABSTRACT:
The invention concerns a recording medium for optically readable data of the multilayer type, a method for making same and an optical system for reproducing said data for reading the medium.The medium (Sb) comprises a stack of layers (C1to CN) whereof the interfaces constitute planes (P1to PN) bearing slightly phase-shifting information elements. Said planes generate a relatively significant disturbance of the transmitted beam while diffracting only a very small part of the light passing through them. The reading beam (FI) is focused on the bearing plane and reading is performed by transmission. The disturbances caused by the neighboring defocused layers are eliminated by far field detection of only the low spatial frequencies in the transmitted beam.The invention is particularly useful for very high capacity data optical storage.

REFERENCES:
patent: 3913076 (1975-10-01), Lehureau et al.
patent: 3919698 (1975-11-01), Bricot et al.
patent: 3971002 (1976-07-01), Bricot et al.
patent: 4023033 (1977-05-01), Bricot et al.
patent: 4025784 (1977-05-01), Lehureau et al.
patent: 4037251 (1977-07-01), Bricot et al.
patent: 4038524 (1977-07-01), Puech et al.
patent: 4039764 (1977-08-01), Bricot et al.
patent: 4059841 (1977-11-01), Bricot et al.
patent: 4079247 (1978-03-01), Bricot et al.
patent: 4079248 (1978-03-01), Lehureau et al.
patent: 4128309 (1978-12-01), Lehureau et al.
patent: 4138663 (1979-02-01), Lehureau et al.
patent: 4139263 (1979-02-01), Lehureau et al.
patent: 4142208 (1979-02-01), Oprandi et al.
patent: 4143402 (1979-03-01), Bricot et al.
patent: 4171879 (1979-10-01), Bricot et al.
patent: 4176277 (1979-11-01), Bricot et al.
patent: 4199783 (1980-04-01), Huignard et al.
patent: 4203133 (1980-05-01), Bricot et al.
patent: 4275275 (1981-06-01), Bricot et al.
patent: 4275428 (1981-06-01), Lehureau
patent: 4308545 (1981-12-01), Lehureau et al.
patent: 4321634 (1982-03-01), Lehureau
patent: 4334300 (1982-06-01), Arquie et al.
patent: 4380016 (1983-04-01), Lehureau et al.
patent: 4381556 (1983-04-01), Bourdon et al.
patent: 4405862 (1983-09-01), Bricot et al.
patent: 4405994 (1983-09-01), Cornet et al.
patent: 4551733 (1985-11-01), Cornet et al.
patent: 4566092 (1986-01-01), Gerard et al.
patent: 4586165 (1986-04-01), Cornet et al.
patent: 4791514 (1988-12-01), Huijer et al.
patent: 4827218 (1989-05-01), Meunier et al.
patent: 4942490 (1990-07-01), Lehureau
patent: 4949198 (1990-08-01), Huijer et al.
patent: 5025341 (1991-06-01), Bousquet et al.
patent: 5050027 (1991-09-01), Meunier et al.
patent: 5067230 (1991-11-01), Meunier et al.
patent: 5089923 (1992-02-01), Lehureau
patent: 5093174 (1992-03-01), Suzuki et al.
patent: 5124869 (1992-06-01), Lehureau
patent: 5125052 (1992-06-01), Lehureau et al.
patent: 5134516 (1992-07-01), Lehureau et al.
patent: 5157641 (1992-10-01), Lehureau
patent: 5168485 (1992-12-01), Lehureau et al.
patent: 5172368 (1992-12-01), Lehureau
patent: 5182781 (1993-01-01), Lehureau et al.
patent: 5218595 (1993-06-01), Lehureau et al.
patent: 5229874 (1993-07-01), Lehureau et al.
patent: 5258969 (1993-11-01), Refregier et al.
patent: 5272551 (1993-12-01), Lehureau et al.
patent: 5337172 (1994-08-01), Lehureau
patent: 5347380 (1994-09-01), Lehureau
patent: 5349400 (1994-09-01), Kaplan et al.
patent: 5392181 (1995-02-01), Lehureau et al.
patent: 5396482 (1995-03-01), Lehureau
patent: 5459619 (1995-10-01), Colineau et al.
patent: 5566982 (1996-10-01), Lehureau et al.
patent: 5657304 (1997-08-01), Lehureau
patent: 5659536 (1997-08-01), Maillot et al.
patent: 5671106 (1997-09-01), Lehureau
patent: 5745329 (1998-04-01), Lehureau
patent: 5801794 (1998-09-01), Lehureau et al.
patent: 5872764 (1999-02-01), Lehureau et al.
patent: 5880914 (1999-03-01), Lehureau
patent: 5936484 (1999-08-01), Dolfi et al.
patent: 5973890 (1999-10-01), Lehureau et al.
patent: 6014192 (2000-01-01), Lehureau et al.
patent: 6091697 (2000-07-01), Le Carvennec et al.
patent: 6157471 (2000-12-01), Bignolles et al.
patent: 6288805 (2001-09-01), Huignard et al.
patent: 6324155 (2001-11-01), Maeda
patent: 6384974 (2002-05-01), Joubert et al.
patent: 6577561 (2003-06-01), Pirot et al.
patent: 6788644 (2004-09-01), Braat
patent: 0 440 214 (1991-08-01), None
patent: 0 729 142 (1996-08-01), None
patent: 2 271 617 (1975-12-01), None
patent: 00 17867 (2000-03-01), None

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