公开(公告)号：US07336581B2

公开(公告)日：2008-02-26

申请号：US11328132

申请日：2006-01-10

申请人： Yutaka Okamoto ,  Hideo Ando ,  Chosaku Noda ,  Yutaka Kashihara

发明人： Yutaka Okamoto ,  Hideo Ando ,  Chosaku Noda ,  Yutaka Kashihara

IPC分类号： G11B5/09 ,  G11B7/24

CPC分类号： G11B27/3027 ,  G11B7/005 ,  G11B7/006 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/24082 ,  G11B7/24085 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/10037 ,  G11B20/10055 ,  G11B20/10083 ,  G11B20/10101 ,  G11B20/10111 ,  G11B20/10296 ,  G11B20/1217 ,  G11B20/14 ,  G11B20/1403 ,  G11B20/1426 ,  G11B20/18 ,  G11B27/19 ,  G11B27/24 ,  G11B2020/1239 ,  G11B2020/1245 ,  G11B2020/1267 ,  G11B2020/1274 ,  G11B2020/1277 ,  G11B2020/1278 ,  G11B2020/1287 ,  G11B2020/1292 ,  G11B2020/1294 ,  G11B2020/1295 ,  G11B2020/1298 ,  G11B2020/1465 ,  G11B2220/216 ,  G11B2220/2537 ,  G11B2220/2562 ,  G11B2220/2575

摘要： A signal can be detected based on a level slice system and detection delay time can be reduced by setting the recording density of a header field in a linear direction lower (coarse) than that of a user data recording field. Further, a signal can be detected based on the level slice system and detection delay time can be reduced by using a mark position form having a large detection margin as an information recording system of the header field. A readout error of a sector number due to a detection error is compensated for by recording address marks AM for attaining byte synchronization of the header field in both of a head portion and tail portion of information recorded in the header field.

公开(公告)号：US07327657B2

公开(公告)日：2008-02-05

申请号：US11493798

申请日：2006-07-27

申请人： Chosaku Noda ,  Yutaka Kashihara ,  Yutaka Okamoto ,  Hideo Ando ,  Koichi Hirayama

发明人： Chosaku Noda ,  Yutaka Kashihara ,  Yutaka Okamoto ,  Hideo Ando ,  Koichi Hirayama

IPC分类号： G11B7/00

CPC分类号： G11B7/005 ,  G11B5/012 ,  G11B5/09 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/10101 ,  G11B20/10111 ,  G11B20/10212 ,  G11B20/10296 ,  G11B20/10425

摘要： A reproduction signal evaluation method of this invention includes the step of obtaining a reproduction signal from an information recording medium on which digital information is recorded with record marks having different sizes, the step of obtaining the amplitude of a first reproduction signal, of the signals contained in the reproduction signal, which reflects digital information recorded with a record mark having the maximum size, the step of obtaining the amplitude of a second reproduction signal, of the signals contained in the reproduction signal, which reflects digital information recorded with a record mark having the second smallest size, the step of obtaining an evaluation value from the ratio of the amplitudes of the first and second reproduction signals, and the step of evaluating a characteristic of the reproduction signal on the basis of the evaluation value.

公开(公告)号：US07321545B2

公开(公告)日：2008-01-22

申请号：US11562046

申请日：2006-11-21

申请人： Yutaka Okamoto ,  Hideo Ando ,  Chosaku Noda ,  Yutaka Kashihara

发明人： Yutaka Okamoto ,  Hideo Ando ,  Chosaku Noda ,  Yutaka Kashihara

IPC分类号： G11B7/24 ,  G11B5/09

CPC分类号： G11B27/3027 ,  G11B7/005 ,  G11B7/006 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/24082 ,  G11B7/24085 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/10037 ,  G11B20/10055 ,  G11B20/10083 ,  G11B20/10101 ,  G11B20/10111 ,  G11B20/10296 ,  G11B20/1217 ,  G11B20/14 ,  G11B20/1403 ,  G11B20/1426 ,  G11B20/18 ,  G11B27/19 ,  G11B27/24 ,  G11B2020/1239 ,  G11B2020/1245 ,  G11B2020/1267 ,  G11B2020/1274 ,  G11B2020/1277 ,  G11B2020/1278 ,  G11B2020/1287 ,  G11B2020/1292 ,  G11B2020/1294 ,  G11B2020/1295 ,  G11B2020/1298 ,  G11B2020/1465 ,  G11B2220/216 ,  G11B2220/2537 ,  G11B2220/2562 ,  G11B2220/2575

摘要： A signal can be detected based on a level slice system and detection delay time can be reduced by setting the recording density of a header field in a linear direction lower (coarse) than that of a user data recording field. Further, a signal can be detected based on the level slice system and detection delay time can be reduced by using a mark position form having a large detection margin as an information recording system of the header field. A readout error of a sector number due to a detection error is compensated for by recording address marks AM for attaining byte synchronization of the header field in both of a head portion and tail portion of information recorded in the header field.

公开(公告)号：US07319654B2

公开(公告)日：2008-01-15

申请号：US11562260

申请日：2006-11-21

申请人： Yutaka Okamoto ,  Hideo Ando ,  Chosaku Noda ,  Yutaka Kashihara

发明人： Yutaka Okamoto ,  Hideo Ando ,  Chosaku Noda ,  Yutaka Kashihara

IPC分类号： G11B5/09 ,  G11B7/24

CPC分类号： G11B27/3027 ,  G11B7/005 ,  G11B7/006 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/24082 ,  G11B7/24085 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/10037 ,  G11B20/10055 ,  G11B20/10083 ,  G11B20/10101 ,  G11B20/10111 ,  G11B20/10296 ,  G11B20/1217 ,  G11B20/14 ,  G11B20/1403 ,  G11B20/1426 ,  G11B20/18 ,  G11B27/19 ,  G11B27/24 ,  G11B2020/1239 ,  G11B2020/1245 ,  G11B2020/1267 ,  G11B2020/1274 ,  G11B2020/1277 ,  G11B2020/1278 ,  G11B2020/1287 ,  G11B2020/1292 ,  G11B2020/1294 ,  G11B2020/1295 ,  G11B2020/1298 ,  G11B2020/1465 ,  G11B2220/216 ,  G11B2220/2537 ,  G11B2220/2562 ,  G11B2220/2575

摘要： A signal can be detected based on a level slice system and detection delay time can be reduced by setting the recording density of a header field in a linear direction lower (coarse) than that of a user data recording field. Further, a signal can be detected based on the level slice system and detection delay time can be reduced by using a mark position form having a large detection margin as an information recording system of the header field. A readout error of a sector number due to a detection error is compensated for by recording address marks AM for attaining byte synchronization of the header field in both of a head portion and tail portion of information recorded in the header field.

公开(公告)号：US20070091762A1

公开(公告)日：2007-04-26

申请号：US11562040

申请日：2006-11-21

申请人： YUTAKA OKAMOTO ,  Hideo Ando ,  Chosaku Noda ,  Yutaka Kashihara

发明人： YUTAKA OKAMOTO ,  Hideo Ando ,  Chosaku Noda ,  Yutaka Kashihara

IPC分类号： G11B20/10

CPC分类号： G11B27/3027 ,  G11B7/005 ,  G11B7/006 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/24082 ,  G11B7/24085 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/10037 ,  G11B20/10055 ,  G11B20/10083 ,  G11B20/10101 ,  G11B20/10111 ,  G11B20/10296 ,  G11B20/1217 ,  G11B20/14 ,  G11B20/1403 ,  G11B20/1426 ,  G11B20/18 ,  G11B27/19 ,  G11B27/24 ,  G11B2020/1239 ,  G11B2020/1245 ,  G11B2020/1267 ,  G11B2020/1274 ,  G11B2020/1277 ,  G11B2020/1278 ,  G11B2020/1287 ,  G11B2020/1292 ,  G11B2020/1294 ,  G11B2020/1295 ,  G11B2020/1298 ,  G11B2020/1465 ,  G11B2220/216 ,  G11B2220/2537 ,  G11B2220/2562 ,  G11B2220/2575

摘要： A signal can be detected based on a level slice system and detection delay time can be reduced by setting the recording density of a header field in a linear direction lower (coarse) than that of a user data recording field. Further, a signal can be detected based on the level slice system and detection delay time can be reduced by using a mark position form having a large detection margin as an information recording system of the header field. A readout error of a sector number due to a detection error is compensated for by recording address marks AM for attaining byte synchronization of the header field in both of a head portion and tail portion of information recorded in the header field.

公开(公告)号：US20070091761A1

公开(公告)日：2007-04-26

申请号：US11562024

申请日：2006-11-21

申请人： Yutaka Okamoto ,  Hideo Ando ,  Chosaku Noda ,  Yutaka Kashihara

发明人： Yutaka Okamoto ,  Hideo Ando ,  Chosaku Noda ,  Yutaka Kashihara

IPC分类号： G11B20/10

CPC分类号： G11B27/3027 ,  G11B7/005 ,  G11B7/006 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/24082 ,  G11B7/24085 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/10037 ,  G11B20/10055 ,  G11B20/10083 ,  G11B20/10101 ,  G11B20/10111 ,  G11B20/10296 ,  G11B20/1217 ,  G11B20/14 ,  G11B20/1403 ,  G11B20/1426 ,  G11B20/18 ,  G11B27/19 ,  G11B27/24 ,  G11B2020/1239 ,  G11B2020/1245 ,  G11B2020/1267 ,  G11B2020/1274 ,  G11B2020/1277 ,  G11B2020/1278 ,  G11B2020/1287 ,  G11B2020/1292 ,  G11B2020/1294 ,  G11B2020/1295 ,  G11B2020/1298 ,  G11B2020/1465 ,  G11B2220/216 ,  G11B2220/2537 ,  G11B2220/2562 ,  G11B2220/2575

摘要： A signal can be detected based on a level slice system and detection delay time can be reduced by setting the recording density of a header field in a linear direction lower (coarse) than that of a user data recording field. Further, a signal can be detected based on the level slice system and detection delay time can be reduced by using a mark position form having a large detection margin as an information recording system of the header field. A readout error of a sector number due to a detection error is compensated for by recording address marks AM for attaining byte synchronization of the header field in both of a head portion and tail portion of information recorded in the header field.

摘要翻译： 可以基于电平切片系统检测信号，并且可以通过将报头字段的记录密度设置为比用户数据记录区域低的（粗略）的线性方向来减小检测延迟时间。 此外，可以基于电平切片系统检测信号，并且可以通过使用具有较大检测余量的标记位置形式作为标题字段的信息记录系统来减少检测延迟时间。 通过记录地址标记AM来补偿由于检测错误引起的扇区号的读出错误，以便在标题字段中记录的信息的头部和尾部中的头部字段的两个字段同步中获得字节同步。

公开(公告)号：US06847600B2

公开(公告)日：2005-01-25

申请号：US09808234

申请日：2001-03-15

申请人： Yutaka Kashihara ,  Yutaka Okamoto ,  Chosaku Noda ,  Hideo Ando ,  Koichi Hirayama

发明人： Yutaka Kashihara ,  Yutaka Okamoto ,  Chosaku Noda ,  Hideo Ando ,  Koichi Hirayama

IPC分类号： H04N17/06 ,  G11B7/005 ,  G11B20/10 ,  G11B20/18 ,  G11B27/36 ,  G11B5/09

CPC分类号： G11B20/10037 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/10101 ,  G11B20/10111 ,  G11B20/10481 ,  G11B27/36 ,  G11B2220/2562

摘要： An estimation method produces a reproduction signal while reading from an information recording medium such as an optical disk, and uses an equalizer to produce an equalization signal. The method then synthesizes distribution levels of the equalization signal that range over distributions of (n+1) levels L0, L1, . . . , Ln (in which L0 2), thereby creating a new distribution. The method then uses the standard deviation of the new distribution as an estimation reference value to estimate the quality of an information reproduction apparatus or the quality of the information recording medium. The quality estimate may be used to adjust a circuit in an information reproduction apparatus that reads the information recording medium.

摘要翻译： 估计方法在从诸如光盘的信息记录介质读取时产生再现信号，并且使用均衡器来产生均衡信号。 然后，该方法合成在（n + 1）级L0，L1，...的分布范围内的均衡信号的分布电平。 。 。 ，Ln（其中L0 2），从而产生新的分布。 然后，该方法使用新分布的标准偏差作为估计参考值来估计信息再现设备的质量或信息记录介质的质量。 质量估计可以用于调整读取信息记录介质的信息再现装置中的电路。

公开(公告)号：US06757230B2

公开(公告)日：2004-06-29

申请号：US09916591

申请日：2001-07-30

申请人： Chosaku Noda ,  Yutaka Okamoto ,  Yutaka Kashihara ,  Hideo Ando

发明人： Chosaku Noda ,  Yutaka Okamoto ,  Yutaka Kashihara ,  Hideo Ando

IPC分类号： G11B700

CPC分类号： G11B27/3027 ,  G11B7/007 ,  G11B27/19 ,  G11B27/24 ,  G11B2220/2587

摘要： An information recording medium of this invention has a spiral track. The spiral track has one or more header fields per round of the spiral track, and a data field located between neighboring header fields. The data field has a variable length corresponding to an integer multiple of a predetermined length Lw so as to minimize a deviation between the n-th header field in a predetermined round of the spiral track, and the n-th header field in a round different from the predetermined round in the track direction.

摘要翻译： 本发明的信息记录介质具有螺旋轨迹。 螺旋轨迹每循环轨道具有一个或多个报头字段，以及位于相邻报头字段之间的数据字段。 数据字段具有对应于预定长度Lw的整数倍的可变长度，以便最小化螺旋形轨道的预定回合中的第n个报头字段与轮的不同的第n个报头字段之间的偏差 从轨道方向上的预定轮。

公开(公告)号：US07394740B2

公开(公告)日：2008-07-01

申请号：US11493799

申请日：2006-07-27

申请人： Chosaku Noda ,  Yutaka Kashihara ,  Yutaka Okamoto ,  Hideo Ando ,  Koichi Hirayama

发明人： Chosaku Noda ,  Yutaka Kashihara ,  Yutaka Okamoto ,  Hideo Ando ,  Koichi Hirayama

IPC分类号： G11B7/00

CPC分类号： G11B7/005 ,  G11B5/012 ,  G11B5/09 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/10101 ,  G11B20/10111 ,  G11B20/10212 ,  G11B20/10296 ,  G11B20/10425

摘要： A reproduction signal evaluation method of this invention includes the step of obtaining a reproduction signal from an information recording medium on which digital information is recorded with record marks having different sizes, the step of obtaining the amplitude of a first reproduction signal, of the signals contained in the reproduction signal, which reflects digital information recorded with a record mark having the maximum size, the step of obtaining the amplitude of a second reproduction signal, of the signals contained in the reproduction signal, which reflects digital information recorded with a record mark having the second smallest size, the step of obtaining an evaluation value from the ratio of the amplitudes of the first and second reproduction signals, and the step of evaluating a characteristic of the reproduction signal on the basis of the evaluation value.

摘要翻译： 本发明的再现信号评估方法包括以下步骤：从其中记录数字信息的信息记录介质获得具有不同尺寸的记录标记的步骤，获得包含的信号的第一再现信号的幅度 在再现信号中，其反映用具有最大尺寸的记录标记记录的数字信息，获得包含在再现信号中的信号的第二再现信号的幅度的步骤，该信号反映用记录有记录标记的数字信息， 第二最小尺寸，从第一和第二再现信号的幅度的比值获得评估值的步骤，以及基于评估值评估再现信号的特性的步骤。

公开(公告)号：US07321547B2

公开(公告)日：2008-01-22

申请号：US11562263

申请日：2006-11-21

申请人： Yutaka Okamoto ,  Hideo Ando ,  Chosaku Noda ,  Yutaka Kashihara

发明人： Yutaka Okamoto ,  Hideo Ando ,  Chosaku Noda ,  Yutaka Kashihara

IPC分类号： G11B7/24

CPC分类号： G11B27/3027 ,  G11B7/005 ,  G11B7/006 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/24082 ,  G11B7/24085 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/10037 ,  G11B20/10055 ,  G11B20/10083 ,  G11B20/10101 ,  G11B20/10111 ,  G11B20/10296 ,  G11B20/1217 ,  G11B20/14 ,  G11B20/1403 ,  G11B20/1426 ,  G11B20/18 ,  G11B27/19 ,  G11B27/24 ,  G11B2020/1239 ,  G11B2020/1245 ,  G11B2020/1267 ,  G11B2020/1274 ,  G11B2020/1277 ,  G11B2020/1278 ,  G11B2020/1287 ,  G11B2020/1292 ,  G11B2020/1294 ,  G11B2020/1295 ,  G11B2020/1298 ,  G11B2020/1465 ,  G11B2220/216 ,  G11B2220/2537 ,  G11B2220/2562 ,  G11B2220/2575

摘要： A signal can be detected based on a level slice system and detection delay time can be reduced by setting the recording density of a header field in a linear direction lower (coarse) than that of a user data recording field. Further, a signal can be detected based on the level slice system and detection delay time can be reduced by using a mark position form having a large detection margin as an information recording system of the header field. A readout error of a sector number due to a detection error is compensated for by recording address marks AM for attaining byte synchronization of the header field in both of a head portion and tail portion of information recorded in the header field.