公开(公告)号：EP3731228A1

公开(公告)日：2020-10-28

申请号：EP20173182.5

申请日：2015-09-15

申请人： Dai Nippon Printing Co., Ltd.

发明人： NAKATA, Naoko ,  ARITSUKA, Yuki

IPC分类号： G11B7/0065 ,  G11B7/0045 ,  G11B7/135 ,  G11B7/005

摘要： An aspect of the invention relates to an information readout device which reads out digital data stored at an information recording medium by using an information storage device, the information readout device, comprising: an image photographing device (400) which magnifies and photographs a domain to be photographed which is a part of a recording surface of the information recording medium (M) to capture an obtained photographed image as image data; a photographed-image housing portion (510) which houses the photographed image; a bit-recording-domain recognizing portion (520) which detects an alignment mark (Q) from the photographed image housed in the photographed-image housing portion (510), thereby recognizing individual bit recording domains (Ab); a unit-bit-matrix recognizing portion (530) which recognizes a unit bit matrix (B(Ui)) on the basis of a pattern inside the bit recording domain (Ab); a scanning controller (540) which controls a change in domain to be photographed by the image photographing device (400) so that a photographed image can be obtained in all bit recording domains (Ab) to be readout; and a data restoration portion (550) which creates unit data (Ui) from individual unit bit matrixes (B(Ui)) recognized by the unit-bit-matrix recognizing portion (520) to synthesize individual unit data (Ui), thereby restoring the digital data (D) stored. Further aspects relate to a computer program and an information readout method.

公开(公告)号：EP3352170A1

公开(公告)日：2018-07-25

申请号：EP15904152.4

申请日：2015-09-15

申请人： Dai Nippon Printing Co., Ltd.

发明人： NAKATA, Naoko ,  ARITSUKA, Yuki

IPC分类号： G11B7/0065 ,  G11B7/0045 ,  G11B7/135

CPC分类号： G11B7/0045 ,  G11B7/0065 ,  G11B7/135

摘要： The invention makes it possible to perform highly integrated recording of information and read out the information in a universal method while maintaining long-term durability. Digital data (D) to be stored is divided by a prescribed bit length u to create a plurality of unit data (U1 to U4). The bits constituting the unit data (U1) are arranged in a two-dimensional matrix to create a unit bit matrix (B(U1)), which is converted to a geometrical pattern to thereby create a unit bit graphic pattern (P(U1)). Further, alignment marks (Q) are arranged at four corners to create a unit recording graphic pattern (R(U1)). A drawing pattern (P(E)) is created as an assembly of the unit recording graphic patterns (R(U1) to R(U4)), and is provided to an electron beam lithography system as drawing data (E) whereby a pattern is drawn in a resist layer on a glass substrate. The resist layer is developed and the glass substrate is etched, and thus the digital data (D) is recorded on the substrate as a physically structured pattern.

公开(公告)号：EP3352172A1

公开(公告)日：2018-07-25

申请号：EP16846596.1

申请日：2016-09-09

申请人： Dai Nippon Printing Co., Ltd.

发明人： ARITSUKA, Yuki ,  NAKATA, Naoko ,  ODA, Hirokazu

IPC分类号： G11B7/26 ,  B29C59/02 ,  G03F7/20 ,  G03F9/00 ,  G11B7/0033 ,  G11B7/2531 ,  H01L21/027

CPC分类号： G11B7/263 ,  B29C33/3878 ,  B29C43/02 ,  B29C43/50 ,  B29C59/02 ,  B29K2909/08 ,  B29L2017/001 ,  G03F7/0002 ,  G03F7/20 ,  G03F7/2053 ,  G03F7/2059 ,  G03F9/00 ,  G11B7/0033 ,  G11B7/2531 ,  G11B7/26 ,  G11B7/261 ,  H01L21/027

摘要： The same digital data is recorded with highly integrated manner on a plurality of media able to durably hold information over long-term. A minute graphic pattern indicating data bit information is drawn on a resist layer formed on a quartz glass substrate by exposing a beam and developed so as to prepare a master medium (M1), which comprises the quartz glass substrate having a minute recess and protrusion structure formed by etching where the remaining resist are used as a mask (Fig. (a)). The recess and protrusion structure recorded on the master medium (M1) is shaped and transferred onto a flexible recording medium (G2) on which a UV curable resin layer (61) is formed, whereby an intermediate medium (M2) is prepared (Figs. (b)-(d)). The inverted recess and protrusion structure transferred to the intermediate medium (M2) is shaped and transferred onto a recording medium (G3) comprising a quartz glass substrate (70) on which a UV curable resin layer (80) is formed, whereby a reproduction medium (M3) having the same recess and protrusion structure as that of the master medium (M1) is prepared (Figs. (e)-(h)). In shaping and transferring process, the media are separated using the flexibility of the intermediate medium (M2).