公开(公告)号：US08634287B2

公开(公告)日：2014-01-21

申请号：US12526555

申请日：2008-12-08

申请人： Tetsuhiro Sakamoto ,  Jun Nakano ,  Takayuki Asahina ,  Etsuo Shibasaki ,  Hideo Kawachi

发明人： Tetsuhiro Sakamoto ,  Jun Nakano ,  Takayuki Asahina ,  Etsuo Shibasaki ,  Hideo Kawachi

IPC分类号： G11B7/24

CPC分类号： G11B7/00736 ,  G11B7/00451 ,  G11B7/24085 ,  G11B7/24094 ,  G11B7/263 ,  G11B7/268

摘要： An information signal area on an information signal recording surface is provided as pits on a mirror in accordance with modulated information data, and is covered with a metal alloy reflective film. Sections that do not include pits corresponding to the information data are provided in the information signal area, and portions of the metal alloy reflective film on the sections are formed as perforated marks corresponding to the information data. In this case, the reproduction signal amplification level of a prepit signal and the reproduction signal amplitude level of a perforated mark signal can be obtained as substantially equal values by adjusting the depth and width of pits and/or adjusting the width and length of perforated marks. Hence, waveform distortion due to a waveform equalization circuit and variations in binary signals due to displacement of the slice level are reduced so that signals can be stably and reliably detected with the same reading apparatus.

摘要翻译： 信息信号记录面上的信息信号区域根据调制信息数据作为凹坑设置在反射镜上，并被金属合金反射膜覆盖。 不包括与信息数据对应的凹坑的部分设置在信息信号区域中，并且部分上的金属合金反射膜的部分形成为与信息数据相对应的穿孔标记。 在这种情况下，通过调整凹坑的深度和宽度和/或调整穿孔标记的宽度和长度，可以获得预凹坑信号的再现信号放大电平和穿孔标记信号的再现信号幅度电平基本上相等的值 。 因此，由于波形均衡电路引起的波形失真和由于限幅电平的位移引起的二进制信号的变化被减小，从而可以用相同的读取装置稳定可靠地检测信号。

公开(公告)号：US20100085864A1

公开(公告)日：2010-04-08

申请号：US12526555

申请日：2008-12-08

申请人： Tetsuhiro Sakamoto ,  Jun Nakano ,  Takayuki Asahina ,  Etsuo Shibasaki ,  Hideo Kawachi

发明人： Tetsuhiro Sakamoto ,  Jun Nakano ,  Takayuki Asahina ,  Etsuo Shibasaki ,  Hideo Kawachi

IPC分类号： G11B7/24 ,  G11B7/26

CPC分类号： G11B7/00736 ,  G11B7/00451 ,  G11B7/24085 ,  G11B7/24094 ,  G11B7/263 ,  G11B7/268

摘要： An information signal area on an information signal recording surface is provided as pits on a mirror in accordance with modulated information data, and is covered with a metal alloy reflective film. Sections that do not include pits corresponding to the information data are provided in the information signal area, and portions of the metal alloy reflective film on the sections are formed as perforated marks corresponding to the information data. In this case, the reproduction signal amplification level of a prepit signal and the reproduction signal amplitude level of a perforated mark signal can be obtained as substantially equal values by adjusting the depth and width of pits and/or adjusting the width and length of perforated marks. Hence, waveform distortion due to a waveform equalization circuit and variations in binary signals due to displacement of the slice level are reduced so that signals can be stably and reliably detected with the same reading apparatus.

摘要翻译： 信息信号记录面上的信息信号区域根据调制信息数据作为凹坑设置在反射镜上，并被金属合金反射膜覆盖。 不包括与信息数据对应的凹坑的部分设置在信息信号区域中，并且部分上的金属合金反射膜的部分形成为与信息数据相对应的穿孔标记。 在这种情况下，通过调整凹坑的深度和宽度和/或调整穿孔标记的宽度和长度，可以获得预凹坑信号的再现信号放大电平和穿孔标记信号的再现信号幅度电平基本上相等的值 。 因此，由于波形均衡电路引起的波形失真和由于限幅电平的位移引起的二进制信号的变化被减小，从而可以用相同的读取装置稳定可靠地检测信号。

公开(公告)号：US20090147664A1

公开(公告)日：2009-06-11

申请号：US12329024

申请日：2008-12-05

申请人： Tetsuhiro SAKAMOTO ,  Jun Nakano ,  Takayuki Asahina ,  Hideo Kawachi ,  Yoshitake Yanagisawa ,  Makoto Tsukahara ,  Inho Cho

发明人： Tetsuhiro SAKAMOTO ,  Jun Nakano ,  Takayuki Asahina ,  Hideo Kawachi ,  Yoshitake Yanagisawa ,  Makoto Tsukahara ,  Inho Cho

IPC分类号： G11B7/24

CPC分类号： G11B7/00736 ,  G11B7/00451

摘要： An optical disk read only memory having an information recording surface with a concave-convex pattern formed on the basis of a first signal and a reflective film covering the surface. The disc medium includes: an additional information recording section formed on a recording track of a first data string; and a second data string including a mark of removing or reducing the reflective film. The modulation methods of the first and the second data strings are identical, and Lh(n)>Lp1(n) and Wh(n)>(Wp1(n)+Wp2(n))/2 are satisfied, where a reference clock cycle is T, a data length is nT, a length and a width of the mark are Lh(n) and Wh(n), a length and a width of a base of the pit are Lp1(n), and Wp1(n), a length and a width of a top face of the pit is Lp2(n) exceeding Lp1(n), and Wp2(n) exceeding Wp1(n).

摘要翻译： 一种光盘只读存储器，具有基于第一信号形成的具有凹凸图案的信息记录表面和覆盖该表面的反射膜。 盘介质包括：形成在第一数据串的记录轨道上的附加信息记录部分; 以及包括去除或缩小反射膜的标记的第二数据串。 第一和第二数据串的调制方式相同，并且Lh（n）> Lp1（n）和Wh（n）>（Wp1（n）+ Wp2（n））/ 2被满足，其中参考时钟 周期为T，数据长度为nT，标记的长度和宽度为Lh（n）和Wh（n），凹坑的基底的长度和宽度为Lp1（n），Wp1（n ），凹坑的顶面的长度和宽度为Lp2（n）超过Lp1（n），Wp2（n）超过Wp1（n）。

公开(公告)号：US07911929B2

公开(公告)日：2011-03-22

申请号：US12329024

申请日：2008-12-05

申请人： Tetsuhiro Sakamoto ,  Jun Nakano ,  Takayuki Asahina ,  Hideo Kawachi ,  Yoshitake Yanagisawa ,  Makoto Tsukahara ,  Inho Cho

发明人： Tetsuhiro Sakamoto ,  Jun Nakano ,  Takayuki Asahina ,  Hideo Kawachi ,  Yoshitake Yanagisawa ,  Makoto Tsukahara ,  Inho Cho

IPC分类号： G11B7/24

CPC分类号： G11B7/00736 ,  G11B7/00451

摘要： An optical disk read only memory having an information recording surface with a concave-convex pattern formed on the basis of a first signal and a reflective film covering the surface. The disc medium includes: an additional information recording section formed on a recording track of a first data string; and a second data string including a mark of removing or reducing the reflective film. The modulation methods of the first and the second data strings are identical, and Lh(n)>Lp1(n) and Wh(n)>(Wp1(n)+Wp2(n))/2 are satisfied, where a reference clock cycle is T, a data length is nT, a length and a width of the mark are Lh(n) and Wh(n), a length and a width of a base of the pit are Lp1(n), and Wp1(n), a length and a width of a top face of the pit is Lp2(n) exceeding Lp1(n), and Wp2(n) exceeding Wp1(n).

摘要翻译： 一种光盘只读存储器，具有基于第一信号形成的具有凹凸图案的信息记录表面和覆盖该表面的反射膜。 盘介质包括：形成在第一数据串的记录轨道上的附加信息记录部分; 以及包括去除或缩小反射膜的标记的第二数据串。 第一和第二数据串的调制方式相同，并且Lh（n）> Lp1（n）和Wh（n）>（Wp1（n）+ Wp2（n））/ 2被满足，其中参考时钟 周期为T，数据长度为nT，标记的长度和宽度为Lh（n）和Wh（n），凹坑的基底的长度和宽度为Lp1（n），Wp1（n ），凹坑的顶面的长度和宽度超过Lp1（n）为Lp2（n），Wp2（n）超过Wp1（n）。

公开(公告)号：US07969855B2

公开(公告)日：2011-06-28

申请号：US12023655

申请日：2008-01-31

申请人： Takayuki Asahina

发明人： Takayuki Asahina

IPC分类号： G11B7/00

CPC分类号： G11B7/00736 ,  G11B7/00451 ,  G11B7/00456 ,  G11B7/0079 ,  G11B7/1267 ,  G11B7/268 ,  G11B19/122

摘要： A read-only optical disc medium is disclosed. The disc medium includes: an information recording area in which information is recorded by means of an embossed pit array formed in a convexo-concave shape having a reflective layer deposited thereon; a test writing area which is used for test write recording of a mark formed by dissipating or decreasing the reflective layer; and an additional write area in which a record data string is formed of a mark by dissipating or decreasing the reflective layer under a recording condition decided in accordance with a result of test write recording performed in the test writing area.

摘要翻译： 公开了只读光盘介质。 盘介质包括：信息记录区，其中通过沉积有反射层的凹凸形状的压花凹坑阵列记录信息; 用于通过消散或减少反射层形成的标记的测试写入记录的测试写入区域; 以及附加写入区域，其中通过在根据在测试写入区域中执行的测试写入记录的结果确定的记录条件下消散或减少反射层，通过标记形成记录数据串。

公开(公告)号：US20080186838A1

公开(公告)日：2008-08-07

申请号：US12023655

申请日：2008-01-31

申请人： Takayuki Asahina

发明人： Takayuki Asahina

IPC分类号： G11B7/24

CPC分类号： G11B7/00736 ,  G11B7/00451 ,  G11B7/00456 ,  G11B7/0079 ,  G11B7/1267 ,  G11B7/268 ,  G11B19/122

摘要： A read-only optical disc medium is disclosed. The disc medium includes: an information recording area in which information is recorded by means of an embossed pit array formed in a convexo-concave shape having a reflective layer deposited thereon; a test writing area which is used for test write recording of a mark formed by dissipating or decreasing the reflective layer; and an additional write area in which a record data string is formed of a mark by dissipating or decreasing the reflective layer under a recording condition decided in accordance with a result of test write recording performed in the test writing area.

摘要翻译： 公开了只读光盘介质。 盘介质包括：信息记录区，其中通过沉积有反射层的凹凸形状的压花凹坑阵列记录信息; 用于通过消散或减少反射层形成的标记的测试写入记录的测试写入区域; 以及附加写入区域，其中通过在根据在测试写入区域中执行的测试写入记录的结果确定的记录条件下消散或减少反射层，通过标记形成记录数据串。

公开(公告)号：US5495456A

公开(公告)日：1996-02-27

申请号：US310564

申请日：1994-09-22

申请人： Nobuyuki Oka ,  Takayuki Asahina

发明人： Nobuyuki Oka ,  Takayuki Asahina

IPC分类号： G11B11/10 ,  G11B7/125 ,  G11B11/105 ,  G11B11/00

CPC分类号： G11B7/126 ,  G11B11/1053 ,  G11B11/10595

摘要： A recording and/or reproducing apparatus for a magneto-optical recording medium includes a semiconductor laser device for radiating a laser beam to the magneto-optical recording medium, a driving circuit for supplying a driving signal to the semiconductor laser device, a first oscillating circuit for generating first high-frequency signals superposed on the driving signal from the driving circuit during recording on the magneto-optical recording medium, and a second oscillating circuit for generating second high-frequency signals superposed on the driving signal from the driving circuit during reproduction from the magneto-optical recording medium. The first high-frequency signals are of a frequency twice the maximum recording frequency or higher, and the second high-frequency signals are of a frequency different from that of the first high-frequency signals. The semiconductor laser device is fed during recording and during reproduction with signals which are the driving signals from the driving circuit superposed on by the first high frequency signals from the first oscillating circuit and with signals which are the driving signals from the driving circuit superposed on by the second high frequency signals.

摘要翻译： 一种用于磁光记录介质的记录和/或再现装置，包括用于将激光束照射到磁光记录介质的半导体激光装置，用于向半导体激光装置提供驱动信号的驱动电路，第一振荡电路 用于在磁光记录介质上记录期间产生叠加在来自驱动电路的驱动信号上的第一高频信号;以及第二振荡电路，用于在再现期间产生叠加在来自驱动电路的驱动信号上的第二高频信号 磁光记录介质。 第一高频信号的频率是最大记录频率的两倍以上，第二高频信号的频率与第一高频信号的频率不同。 半导体激光装置在记录期间和再现期间被馈送，其中信号是来自驱动电路的驱动信号，由来自第一振荡电路的第一高频信号叠加的驱动信号和作为来自驱动电路叠加的驱动信号的信号 第二高频信号。

公开(公告)号：US06541748B1

公开(公告)日：2003-04-01

申请号：US09500581

申请日：2000-02-10

申请人： Takayuki Asahina

发明人： Takayuki Asahina

IPC分类号： G11B700

CPC分类号： G11B7/26 ,  G01N21/9506 ,  G11B7/00375

摘要： An optical disk checkup/measuring apparatus capable of shortening measuring time and of being incorporated into a manufacturing line and has a simple structure includes rotation driving elements (2,3) for driving rotation of an optical disk to be measured (10), a light emitting portion LD for emitting a light beam LF onto the optical disk to be measured (10), an optically detecting portion (D1, D2) for receiving and detecting the light beam LR reflected from the optical disk to be measured (10) and an operation processing portion (4, 5) for processing a signal received and detected by the optically detecting portion (D1, D2) so as to form a specified signal. The light emitting portion is composed of a plurality of light emitting elements LD provided in a radial direction of the optical disk to be measured (10), and the light beams are emitted successively from the light emitting elements LD onto the optical disk to be measured (10).

摘要翻译： 能够缩短测量时间并且被结合到制造线中并且具有简单结构的光盘校验/测量装置包括用于驱动要测量的光盘（10）的旋转的旋转驱动元件（2,3），光 用于将光束LF发射到被测量光盘（10）上的发光部分LD，用于接收和检测从待测光盘（10）反射的光束LR的光学检测部分（D1，D2）和 操作处理部分（4,5），用于处理由光学检测部分（D1，D2）接收和检测的信号，以便形成指定的信号。 发光部由在被测光盘（10）的径向设置的多个发光元件LD构成，并且将光从发光元件LD依次发射到待测光盘上 （10）。