公开(公告)号：US3912391A

公开(公告)日：1975-10-14

申请号：US33275563

申请日：1963-12-23

Applicant: IBM

Inventor： FLEISHER HAROLD ,  HARRIS THOMAS J ,  SHAPIRO EUGENE

IPC: G11C13/04 ,  G03B27/44 ,  G11B5/00

CPC classification number: G11C13/042

Abstract: Storage of information is performed by interference effects in depth in an optically accessible information storage unit. The storage unit is divisible into a plurality of individual information storage areas permitting the recording of the information in the form of various light and no light conditions. Plural light scattering layers are formed in depth in the unit corresponding to the information stored in that area. Read out is performed by applying light to the unit. The scattering layers act on the applied light in accordance with the information stored to provide indications for detection of the stored information.

公开(公告)号：US3434778A

公开(公告)日：1969-03-25

申请号：US3434778D

申请日：1965-06-07

Applicant: IBM

Inventor： HARRIS THOMAS J ,  FLEISHER HAROLD ,  SHAPIRO EUGENE

IPC: G02F1/29 ,  H05H1/00 ,  G02F1/28 ,  G02B17/00 ,  H01J15/00

CPC classification number: G02F1/29 ,  H05H1/00