公开(公告)号：US10068604B2

公开(公告)日：2018-09-04

申请号：US15468164

申请日：2017-03-24

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Harumitsu Miyashita ,  Naohiro Kimura ,  Kohei Nakata

IPC分类号： G11B7/0055 ,  G11B7/005 ,  G11B20/10 ,  G11B7/0045 ,  G11B7/0037 ,  G11B7/006

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

摘要： 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：US10395689B2

公开(公告)日：2019-08-27

申请号：US15902449

申请日：2018-02-22

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Masaru Kaida ,  Motoshi Ito ,  Daisuke Shimoda ,  Naohiro Kimura

IPC分类号： G11B7/00 ,  G11B17/22 ,  G11B7/085 ,  G11B20/18 ,  G11B23/03 ,  G11B27/00 ,  G11B7/09

摘要： An optical disc apparatus includes: a controller configured to acquire information of an access result and access positions on an optical disc when an optical disc drive unit configured to optically access an optical disc optically accesses the optical disc; and a storage configured to store the information acquired by the controller.

公开(公告)号：US10665260B2

公开(公告)日：2020-05-26

申请号：US16260837

申请日：2019-01-29

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Naohiro Kimura ,  Harumitsu Miyashita

IPC分类号： G11B7/00 ,  G11B7/007 ,  G11B7/28 ,  G11B7/24094

摘要： An optical disc recording device includes a data acquisition unit configured to acquire bitmap data corresponding to image information, an address information acquisition unit configured to acquire address information set in wobbles of an optical disc by wobble synchronization from the optical disc, a recording position determining unit configured to determine a recording position on the optical disc for recording the bitmap data using the address information, and a mark recording unit configured to form a recording mark corresponding to the bitmap data on the information recording track of the optical disc by applying a light beam having recording power to the recording position on the optical disc.

公开(公告)号：US10002633B2

公开(公告)日：2018-06-19

申请号：US15286324

申请日：2016-10-05

申请人： PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

发明人： Kohei Nakata ,  Harumitsu Miyashita ,  Naohiro Kimura

IPC分类号： G11B7/007 ,  G11B7/005 ,  G11B20/24 ,  G11B7/09 ,  G11B7/0037 ,  G11B20/12

CPC分类号： G11B7/00718 ,  G11B7/0037 ,  G11B7/0053 ,  G11B7/00736 ,  G11B7/00745 ,  G11B7/0938 ,  G11B20/1217 ,  G11B20/24 ,  G11B2020/1225 ,  G11B2020/1229 ,  G11B2020/1238 ,  G11B2020/1264 ,  G11B2020/1277 ,  G11B2020/1287 ,  G11B2020/1292 ,  G11B2020/1298

摘要： There are provided an optical disk and an optical disk recording method which are capable of stable data reading in a case where a recording linear density is increased. According to an optical disk of the present disclosure, a run-in pattern recorded in a groove track and a run-in pattern recorded in a land track are made different patterns so that no great change is caused in the amplitude of an acquired signal due to interference between adjacent recording patterns, and thus, data may be stably read.