公开(公告)号：US20170194027A1

公开(公告)日：2017-07-06

申请号：US15468164

申请日：2017-03-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Harumitsu MIYASHITA ,  Naohiro KIMURA ,  Kohei NAKATA

IPC: G11B7/0055 ,  G11B20/10 ,  G11B7/005

CPC classification number: G11B7/0055 ,  G11B7/0037 ,  G11B7/00458 ,  G11B7/005 ,  G11B7/006 ,  G11B20/10 ,  G11B20/1024 ,  G11B2020/10851 ,  G11B2020/10898

Abstract: Upon receiving an erase command for data recorded in a write-once optical disc, an information recording device corrupts data in an information area (synchronization signal in Run-in, frame synchronization signal, address information and the like), in an erased area on the optical disc, in which information necessary for synchronization of reproducing data by overwriting the data in the information area with an erasing pattern. The erased area is specified by an erase starting position and a size of data to be erased. In this way, the information recording device erases the data in the erased area.

公开(公告)号：US20160111122A1

公开(公告)日：2016-04-21

申请号：US14984179

申请日：2015-12-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Junichi MINAMINO ,  Harumitsu MIYASHITA ,  Kohei NAKATA

IPC: G11B7/007

CPC classification number: G11B7/00718 ,  G11B7/0053 ,  G11B7/007 ,  G11B7/00745 ,  G11B7/24079 ,  G11B7/24082 ,  G11B7/24085 ,  G11B20/10 ,  G11B20/1217 ,  G11B27/3027 ,  G11B2007/00754

Abstract: An optical disc medium includes a land and a groove at which information can be recorded. A predetermined number of address information units which record address information of the land or groove are provided in a circumferential direction of the optical disc medium. The address information unit of the land includes three or more address recording areas capable of recording address information. The address information is recorded on one area selected from among the three or more address recording areas. The address information unit of the land has address information which is recorded, in the same modulation, on the side of the inner adjacent groove and on the side of the outer adjacent groove. The one area to be selected from among the three or more address recording areas for recording the address information of the land is different among three address information units adjacently arranged in a radial direction.