Phase change optical recording device and method employing a las

Details Phase change optical recording device and method employing a las Phase change optical recording device and method employing a las

1992-11-25

1994-11-22

Dzierzynski, Paul M.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369100, 369116, 3692752, 430270, 430945, 365113, G11B 724

Patent

active

053675142

ABSTRACT:
Disclosed is an optical recording device of a phase change type including at least an optical recording medium having a recording layer formed of a recording material of a phase change type, and a control unit for controlling a unit laser beam, which is to be radiated for writing information onto the optical recording medium to form a recording mark, in such a manner that, when the unit laser beam is divided into front and rear portions with the middle point of the radiated portion of the recording medium as the boundary, the quantity of energy of the rear portion of the unit laser beam is greater than that of the front portion thereof. Also, in the optical recording device, when a recording mark is formed according to a multi-pulse recording system using a multi-pulse laser beam, the multi-pulse laser beam, at least the first pulse thereof is controlled so as to satisfy a similar condition as described above and after then the controlled multi-pulse laser beam or the controlled first pulse thereof is radiated.

REFERENCES:
patent: 4980879 (1990-12-01), Yamada et al.
patent: 5038338 (1991-08-01), Terao et al.
patent: 5107482 (1992-04-01), Goto et al.
patent: 5206114 (1993-04-01), Kobayashi
patent: 5215862 (1993-06-01), Suzuki
"CPM 87 to 88 (1987)" by Electronic Communication Society, published on Dec. 18, 1987.
Ohta et al., "CPM 89-84" by Electronic Communication Society, published on Dec. 15, 1989.
"SPIE" vol. 1078 Optical Data Storage Topical Meeting (1989), published on Jan., 1989.
Optical Memory Symposium '90, pp. 77-78, published on Jul. 11, 1990.
Scripts for Symposium Lecture in the Second Meeting of Phase Change Recording Society, 1991, pp. 60-68, published Jan. 31, 1991.
Scripts for Symposium Lecture in the Second Meeting of Phase Change Recording Society, 1991, pp. 8-19, published on Jan. 31, 1991.
National Conference of Society of Applied Physics, 1991, 11a-SZP-30, published on Oct. 9, 1991.

Affiliated with

Also associated with

Rating

Phase change optical recording device and method employing a las does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase change optical recording device and method employing a las, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase change optical recording device and method employing a las will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1995860