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1.发明申请公开(公告)号：US20160275981A1
公开(公告)日：2016-09-22
申请号：US15166112
申请日：2016-05-26
Inventor： Isao KOBAYASHI , Kohei NAKATA , Yasumori HINO
IPC: G11B7/0045 , G11B20/10
CPC classification number: G11B7/00456 , G11B7/0045 , G11B7/0062 , G11B7/1263 , G11B7/1267 , G11B20/10009 , G11B20/10037 , G11B20/10194
Abstract: An information recording and reproducing apparatus including: a reproducing unit which generates a digital signal from an analog signal; a recording compensation unit which generates an expectation signal from the digital signal, detects a signal difference between the digital signal and the expectation signal, and adjusts a recording condition for recording the information; and a recording unit configured to record the information based on the recording condition. First recording compensation is performed for adjusting the recording condition using first recording where lengths of a preceding space and a succeeding space of a first recording mark and lengths of a preceding space and a succeeding space of a second recording mark are not in intersymbol interference; and second recording compensation is performed for adjusting the recording condition for the first recording mark using second recording data for changing a length of the second recording mark.
Abstract translation: 一种信息记录和再现装置，包括：再现单元，其从模拟信号产生数字信号; 从数字信号产生预期信号的记录补偿单元检测数字信号与期望信号之间的信号差，并调整用于记录信息的记录条件; 以及记录单元，被配置为基于记录条件记录信息。 执行第一记录补偿，以使用第一记录来调整记录条件，其中第一记录标记的前一个空间和后续空间的长度以及前一个空间的长度和第二个记录标记的后续空间的长度不在符号间干扰; 并且执行第二记录补偿，以使用用于改变第二记录标记的长度的第二记录数据来调整用于第一记录标记的记录条件。
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公开(公告)号：US20160191119A1
公开(公告)日：2016-06-30
申请号：US14964615
申请日：2015-12-10
Inventor： Junichi MINAMINO , Kohei NAKATA
CPC classification number: H04B3/462 , G11B20/1024 , G11B20/1816
Abstract: A phase error detector includes an N counter configured to frequency-divide a first clock by N, and output a signal at predetermined timing, an M counter configured to frequency-divide a second clock by M, and output a signal at predetermined timing, a comparator configured to perform phase comparison between a phase when a value of the N counter is 0 and a phase when a value of the M counter is 0, and perform phase comparison between a phase when a value of the N counter is equal to a value obtained by dividing N into a substantially predetermined value and a phase when a value of the M counter is equal to a value obtained by dividing M into a substantially predetermined value and a synthetic circuit configured to generate a phase error, based on comparison results of the comparator.
Abstract translation: 相位误差检测器包括：N计数器，被配置为将第一时钟分频为N，并以预定的定时输出信号; M计数器，被配置为将第二时钟分频为M，并以预定的定时输出信号; 比较器，被配置为当N个计数器的值为0的相位和当M个计数器的值为0时的相位之间执行相位比较，并且当N个计数器的值等于值时的相位之间进行相位比较 通过将N划分成基本上预定的值获得，并且当M计数器的值等于通过将M除以基本上预定的值而获得的值，以及被配置为产生相位误差的合成电路时，基于 比较器。
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公开(公告)号：US20150179207A1
公开(公告)日：2015-06-25
申请号：US14641936
申请日：2015-03-09
Inventor： Junichi MINAMINO , Harumitsu MIYASHITA , Kohei NAKATA
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.
Abstract translation: 光盘介质包括可以记录信息的平台和凹槽。 在光盘介质的圆周方向上设置预定数量的地址信息单元，其记录地面或凹槽的地址信息。 地面的地址信息单元包括能够记录地址信息的三个以上的地址记录区域。 地址信息被记录在从三个或更多个地址记录区域中选择的一个区域上。 陆地的地址信息单元具有在相同的调制中在内相邻槽的侧面和外相邻槽的一侧记录的地址信息。 从用于记录土地的地址信息的三个或更多个地址记录区域中选择的一个区域在径向相邻地布置的三个地址信息单元中是不同的。
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公开(公告)号：US20180144772A1
公开(公告)日：2018-05-24
申请号：US15784142
申请日：2017-10-15
Inventor： Kohei NAKATA , Yoshihisa TAKAHASHI , Junichi MINAMINO
IPC: G11B20/18 , G11B20/00 , G11B7/24088
CPC classification number: G11B20/1883 , G11B7/00458 , G11B7/24088 , G11B20/00586 , G11B20/1879 , G11B20/1889
Abstract: The optical disk device performs recording/reproducing of data by a predetermined recording block on the track of an optical disk. The device has a recording unit, an optical-head, and a failure detection unit. The recording unit generates a recording signal by modulating the data. The optical-head records data on the track by optical beam emission to the track according to the recording signal, and detects light reflected off the track and then generates a detection signal based on the reflected light. The failure detection unit detects an abnormal condition based on the detection signal changed from a normal condition. If the sum of duration of an abnormal condition in the recording block is equal to or greater than a first time-length, the failure detection unit determines that the recording block has a flaw.
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5.发明申请公开(公告)号：US20170103780A1
公开(公告)日：2017-04-13
申请号：US15286324
申请日：2016-10-05
Inventor： Kohei NAKATA , Harumitsu MIYASHITA , Naohiro KIMURA
CPC classification number: 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
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US20160111121A1
公开(公告)日：2016-04-21
申请号：US14984143
申请日：2015-12-30
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.
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公开(公告)号：US20220013144A1
公开(公告)日：2022-01-13
申请号：US17487303
申请日：2021-09-28
Inventor： Yasushi KOBAYASHI , Kohei NAKATA , Yasumori HINO
IPC: G11B20/10 , G11B7/0045
Abstract: A recording mark is formed on a recording medium by a predetermined recording signal, a playback signal of the recording mark formed on the recording medium is obtained, and an expected value signal of the playback signal based on the recording signal is generated. Based on an amplitude error between the playback signal and the expected value signal, and for each predetermined unit of the recording signal, a deviation amount of a mark shape of the recording mark from which the playback signal is obtained with respect to a mark shape of an ideal recording mark is calculated, and a mark shape of the recording mark formed on the recording medium is estimated. Based on the deviation amount of the mark shape of the recording mark, a correction amount is calculated for each predetermined unit of the recording signal, and a level of the recording signal is adjusted.
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公开(公告)号：US20170262338A1
公开(公告)日：2017-09-14
申请号：US15355735
申请日：2016-11-18
Inventor： Kohei NAKATA , Yuji TAKAGI
Abstract: In an optical disc apparatus that records and reproduces data onto and from an optical disc in units of predetermined block, an information divider divides the data so as to reduce an amount of the data included in each of blocks when a recording state of the optical disc does not satisfy a predetermined criterion, and reproduces recording data in units of the block by adding sub-information including a value indicating the amount of the data included in each of the blocks. An error-correction encoder circuit encodes the recording data in a first error-correction code format, and a recorder converts encoded recording data into a recording signal, and records the recording signal onto the optical disc. A quality evaluator circuit produces an evaluation value indicating a recording quality based on a result of reproducing the recording signal recorded on the optical disc.
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公开(公告)号：US20170194027A1
公开(公告)日：2017-07-06
申请号：US15468164
申请日：2017-03-24
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.
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公开(公告)号：US20160111122A1
公开(公告)日：2016-04-21
申请号：US14984179
申请日：2015-12-30
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.
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