公开(公告)号：JP2004071132A

公开(公告)日：2004-03-04

申请号：JP2003039298

申请日：2003-02-18

Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

Inventor： MCDANIEL TERRY WAYNE ,  NOTARYS HARRIS ANTHONY ,  ROSEN HAL JERVIS ,  RUBIN KURT ALLAN

IPC: G11B11/10 ,  G11B7/135 ,  G11B11/105

CPC classification number: G11B7/1365 ,  G11B11/10543 ,  G11B11/10584 ,  G11B11/10597

Abstract: PROBLEM TO BE SOLVED: To provide an optical data storage device provided with an optical disk drive mechanism and a plurality of data layer magneto-optical medium.
SOLUTION: A magneto-optical medium is provided with a substrate 50, a first dielectric layer 130, a first magneto-optical data layer 132, a second dielectric layer 134, a transmitting member 78, a third dielectric layer 140, a second magneto-optical data layer 142, a fourth dielectric layer 144, and a reflection layer 146. The thickness of the magneto-optical layers and dielectric layer are selected so that magneto-optical reading of a signal received from the data layer is made optimum. A disk drive mechanism has a phase retarder improving the signal from the optical data layer.
COPYRIGHT: (C)2004,JPO

公开(公告)号：DE69610722D1

公开(公告)日：2000-11-30

申请号：DE69610722

申请日：1996-01-15

Applicant: IBM

Inventor： MCDANIEL TERRY WAYNE ,  NOTARYS HARRIS ANTHONY ,  ROSEN HAL JERVIS ,  RUBIN KURT ALLAN

IPC: G11B11/10 ,  G11B7/135 ,  G11B11/105

Abstract: An optical data storage system 10 comprises an optical disk drive and a multiple data surface magneto-optical medium 12. The medium comprises a substrate 50, a first dielectric layer 130, a first magneto-optical data layer 132, a second dielectric layer 134, a transmissive member 78, a third dielectric layer 140, a second magneto-optical data layer 142, a fourth dielectric layer 144, and a reflector layer 146. The thicknesses of the magneto-optical and dielectric layers are selected to maximize the magneto-optical read out signal received from the data layers. The disk drive includes a phase retarder for improving the signal from the magneto-optical data layers.

公开(公告)号：DE69610722T2

公开(公告)日：2001-05-10

申请号：DE69610722

申请日：1996-01-15

Applicant: IBM

Inventor： MCDANIEL TERRY WAYNE ,  NOTARYS HARRIS ANTHONY ,  ROSEN HAL JERVIS ,  RUBIN KURT ALLAN

IPC: G11B11/10 ,  G11B7/135 ,  G11B11/105

Abstract: An optical data storage system 10 comprises an optical disk drive and a multiple data surface magneto-optical medium 12. The medium comprises a substrate 50, a first dielectric layer 130, a first magneto-optical data layer 132, a second dielectric layer 134, a transmissive member 78, a third dielectric layer 140, a second magneto-optical data layer 142, a fourth dielectric layer 144, and a reflector layer 146. The thicknesses of the magneto-optical and dielectric layers are selected to maximize the magneto-optical read out signal received from the data layers. The disk drive includes a phase retarder for improving the signal from the magneto-optical data layers.