Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Reexamination Certificate
2006-10-10
2006-10-10
Psitos, A M (Department: 2627)
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
C369S059230
Reexamination Certificate
active
07120097
ABSTRACT:
A laser beam recording system for exposing a photoresist master disc having a photoresist layer formed over a substrate for making a hybrid optical recording disc having a read only (ROM) portion and a writable portion, including a first optical modulator for modulating an intensity of a first laser beam having a wavelength selected to provide activating radiation to expose a pattern in the photoresist layer formed over the substrate of the master disc between a lower intensity for exposing a groove in the photoresist layer and a higher intensity for exposing the groove and a pattern of depressions in the groove in the photoresist layer; and a second optical modulator for frequency-modulating an intensity-modulated second laser beam with a wobble-frequency to cause the exposed groove to be a continuously frequency-modulated groove. The recording system also includes a laser beam modulation control system for controlling the operation of the first and second optical modulators to form a continuously frequency-modulated exposed groove with exposed depressions in the ROM portion of the exposed groove. The first and the second laser beams can be provided by one laser as a single laser beam, by one laser as two split laser beams, and by a first and a second laser.
REFERENCES:
patent: 5297129 (1994-03-01), Wilkinson et al.
patent: 5608711 (1997-03-01), Browne et al.
patent: 5696758 (1997-12-01), Yanagimachi et al.
patent: 5737289 (1998-04-01), Udagawa
patent: 5809006 (1998-09-01), Davis et al.
patent: 5862123 (1999-01-01), Horie et al.
patent: 5940364 (1999-08-01), Ogata et al.
patent: 6043764 (2000-03-01), Sannino et al.
patent: 6310854 (2001-10-01), Sato et al.
patent: 6377518 (2002-04-01), Auwens et al.
patent: 6487164 (2002-11-01), Endoh et al.
patent: 6570840 (2003-05-01), Wilkinson et al.
patent: 0311372 (1989-04-01), None
patent: 0762392 (1997-03-01), None
patent: 1001409 (2000-05-01), None
patent: 07-296426 (1996-03-01), None
Burgo Thomas C.
Ha Bruce
Eastman Kodak Company
Owens Raymond L.
Psitos A M
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