Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Reexamination Certificate
2007-10-09
2007-10-09
Young, Wayne (Department: 2627)
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
C369S059110
Reexamination Certificate
active
10511668
ABSTRACT:
A substrate (1) having a guide groove for tracking with spot irradiation light beam for recording/reproduction of information is provided with a recording layer (2) and a light transmitting layer (3). The recording layer (2) is irradiated with a spot light beam through the light transmitting layer (3) to record information on both a first portion (L′) of the recording layer corresponding to a flat section (L) between adjacent guide grooves and a second portion (G′) of the recording layer corresponding to a guide groove inside (G). Recording marks with mark lengths of nT−mT (where T is a unit length, n, m are integers of one or more, n<m) are formed on the first and second portions (L′, G′). The amplitude IL1of a reproduced signal from the longest recording mark with the mark length of mT recorded on the first portion (L′) and the amplitude IL2of a reproduced signal from the longest recording mark with the mark length of mT recorded on the second portion (G′) satisfy the relation 1<(IL1/IL2)<1.3.
REFERENCES:
patent: 5581539 (1996-12-01), Horie et al.
patent: 5745475 (1998-04-01), Ohno et al.
patent: 6411592 (2002-06-01), Nishiuchi et al.
patent: 6580678 (2003-06-01), Kondo et al.
patent: 2003/0053404 (2003-03-01), Kondo
patent: 57-050330 (1982-03-01), None
patent: 7-121878 (1995-05-01), None
patent: 8-007282 (1996-01-01), None
patent: 09-073665 (1997-03-01), None
patent: 9-167348 (1997-06-01), None
patent: 09-198716 (1997-07-01), None
patent: 09-265658 (1997-10-01), None
patent: 10-064120 (1998-03-01), None
patent: 10-083536 (1998-03-01), None
patent: 11-134720 (1999-05-01), None
patent: 2002-008269 (2002-01-01), None
Chow Lixi
NEC Corporation
Ostrolenk Faber Gerb & Soffen, LLP
Young Wayne
LandOfFree
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