Recording and retrieving method on rewritable optical...

Details Recording and retrieving method on rewritable optical... Recording and retrieving method on rewritable optical...

2008-03-18

2008-03-18

Psitos, Aristotelis M. (Department: 2627)

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal processing for controlling recording light...

C369S059120, C369S053260

Reexamination Certificate

active

07345977

ABSTRACT:
In a rewritable compact disc having a wobble groove on a substrate, crystal and amorphous states of a phase-change recording layer are an unrecorded/erased state and a recorded state, respectively. When the recording layer is exposed to recording light, amorphous marks assuming the recorded state are formed. At any of 2-, 4- and 8-times velocities with respect to a reference velocity (1-times velocity) whose linear velocity is 1.2–1.4 m/s, modulation m11of a recorded signal when the recording light of approximately 780 nm in wavelength irradiates the recording layer via an optical system with NA=0.5 or 0.55 is 60–80%. A topmost level Rtopof reflectivity of the eye pattern of the recorded signal during retrieving at the 1-times velocity is 15–25%, and a jitter of the individual length of marks and inter-mark spaces during retrieving at 1-times velocity is 35 ns or less. Recording at 8-times or higher velocities is thereby realized without any risk of impairing the read-compatibility with the conventional CD-RW specifications at least at 4-times velocity.

REFERENCES:
patent: 5221588 (1993-06-01), Morimoto et al.
patent: 5608710 (1997-03-01), Minemura et al.
patent: 5709978 (1998-01-01), Hirotsune et al.
patent: 5761179 (1998-06-01), Iwasaki et al.
patent: 5789055 (1998-08-01), Yoon
patent: 5818808 (1998-10-01), Takada et al.
patent: 5848043 (1998-12-01), Takada et al.
patent: 5862123 (1999-01-01), Horie et al.
patent: 5946279 (1999-08-01), Okada et al.
patent: 6004646 (1999-12-01), Ohno et al.
patent: 6108295 (2000-08-01), Ohno et al.
patent: 6115352 (2000-09-01), Ohno et al.
patent: 6115353 (2000-09-01), Horie et al.
patent: 6143468 (2000-11-01), Ohno et al.
patent: 6177166 (2001-01-01), Ohno et al.
patent: 6268034 (2001-07-01), Kitaura et al.
patent: 6280810 (2001-08-01), Nakamura et al.
patent: 6388978 (2002-05-01), Ogawa et al.
patent: 6426929 (2002-07-01), Watabe et al.
patent: 0 294 489 (1988-12-01), None
patent: 0 797 193 (1997-09-01), None
patent: 0 834 874 (1998-04-01), None
patent: 1 054 393 (2000-11-01), None
patent: 62-62474 (1987-03-01), None
patent: 62-209701 (1987-09-01), None
patent: 01014083 (1989-01-01), None
patent: 01063195 (1989-03-01), None
patent: 01303643 (1989-12-01), None
patent: 04028587 (1992-01-01), None
patent: 04212735 (1992-08-01), None
patent: 05016528 (1993-01-01), None
patent: 05062193 (1993-03-01), None
patent: 5-229259 (1993-09-01), None
patent: 6-12674 (1994-01-01), None
patent: 9-138947 (1997-05-01), None
patent: 9-282661 (1997-10-01), None
patent: 09-282661 (1997-10-01), None
patent: 9293269 (1997-11-01), None
patent: 10112028 (1998-04-01), None
patent: 10-172179 (1998-06-01), None
patent: 10326436 (1998-12-01), None
patent: 11-115313 (1999-04-01), None
patent: 11-504462 (1999-04-01), None
patent: 11-144310 (1999-05-01), None
patent: 2000-137928 (2000-05-01), None
patent: 2000-233576 (2000-08-01), None
patent: 2001-126252 (2001-05-01), None
patent: 2002-197804 (2002-07-01), None
patent: 97/30444 (1997-08-01), None
MAT (machine assisted translation) of noted JP documnet 09-282661 . NO DATE.
“CD-ROM Professional” published in the United States, Sep. 1996, Hugh Bennett, pp. 29-44.
Y. Kageyama. et al. of R&D Center “CD-Eraseable (CD-E) with Ag-In-Sb-Te Phase Change Recording Material” R&D Group, Ricoh Co. Ltd. (Assembly of Manuscripts for Phase-Change Optical Recording Symposium, Nov. 30-Dec. 1, 1995, pp. 41-45).
Partial European Search Report dated May 10, 2006.
European Search Report dated Feb. 16, 2006.
Notification of Reasons for Rejection mailed Feb. 14, 2006.
Decision of Rejection mailed Aug. 16, 2006.
Appeal Decision mailed Jun. 13, 2006.
European Search Report dated Aug. 10, 2006.
Osta “Universal Disk Format TM Specification, Revision 1.50”, Feb. 4, 1997, Osta, XP002386923.

Affiliated with

Also associated with

Rating

Recording and retrieving method on rewritable optical... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Recording and retrieving method on rewritable optical..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recording and retrieving method on rewritable optical... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2800572