公开(公告)号：US06442120B1

公开(公告)日：2002-08-27

申请号：US09761185

申请日：2001-01-18

申请人： Harukazu Miyamoto ,  Hideki Saga ,  Seiji Yonezawa

发明人： Harukazu Miyamoto ,  Hideki Saga ,  Seiji Yonezawa

IPC分类号： G11B700

摘要： An optical reproduction method for reproducing information includes intermittently irradiating light to a moving optical medium, detecting reflected light from the moving optical medium while the light is irradiated intermittently when a moving distance of a light spot of the intermittently irradiated light on the moving optical medium is smaller than a diameter of the light spot, processing information based on the detected reflected light utilizing a differential operation, and obtaining a reproduction signal based on the differential operation.

公开(公告)号：US6122229A

公开(公告)日：2000-09-19

申请号：US185392

申请日：1998-11-03

申请人： Seiji Yonezawa

发明人： Seiji Yonezawa

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

CPC分类号： G11B11/10515 ,  G11B11/1051 ,  G11B11/10578 ,  G11B11/10595

摘要： A magneto-optically recorded data readout system for the readout of a data pit recorded on a magneto-optical recording medium comprising a memory layer, a switching layer and a displacement layer, said system comprising a means for magnetic domain expansion of said data pit for readout. By which means the recording medium is irradiated and heated with a pulsed laser beam of light such that a domain wall of said data pit can be displaced in the displacement layer and wherein the frequency of the laser beam of light is higher than the highest frequency of the data pit.

摘要翻译： 一种用于读出记录在包括存储层，开关层和位移层的磁光记录介质上的数据凹坑的磁光记录数据读出系统，所述系统包括用于所述数据凹坑的磁畴扩展的装置，用于 读出。 通过这种方式，记录介质用脉冲激光束照射和加热，使得所述数据凹坑的畴壁可以在位移层中移位，并且其中激光束的频率高于 数据坑。

公开(公告)号：US5348837A

公开(公告)日：1994-09-20

申请号：US12479

申请日：1993-02-02

申请人： Hiroshi Fukuda ,  Ryoko Yamanaka ,  Tsutomu Tawa ,  Tsuneo Terasawa ,  Seiji Yonezawa

发明人： Hiroshi Fukuda ,  Ryoko Yamanaka ,  Tsutomu Tawa ,  Tsuneo Terasawa ,  Seiji Yonezawa

IPC分类号： G03F7/20 ,  G03C5/00

CPC分类号： G03F7/70066 ,  G03F7/2002 ,  G03F7/701 ,  G03F7/70191 ,  G03F7/70241 ,  G03F7/70308 ,  G03F7/70333 ,  G03F7/70375 ,  G03F7/70891

摘要： A projection exposure apparatus has an effective source, a mask, a projection lens and an optical filter. The mask is illuminated with the light from the effective source having a substantially annular illumination distribution. The optical filter is disposed in the approximate position of the pupil plane of the projection lens. On the pupil plane, the transmittance of a first region is made lower than that of a second region, the first region being inside of the periphery of an annular region substantially conjugate with the effective source having the annular illumination distribution, the second region being outside of the periphery. Built in this manner, the apparatus forms fine patterns whose unit size is at least as small as the wavelength of the light used while maintaining high values of contrast and deep levels of focal length.

摘要翻译： 投影曝光装置具有有效的源，掩模，投影透镜和滤光器。 掩模被来自有源光的光线照射，具有大致环形的照明分布。 滤光器设置在投影透镜的光瞳面的近似位置。 在光瞳面上，使第一区域的透射率低于第二区域的透射率，第一区域在与具有环状照明分布的有效源基本共轭的环状区域的周围的内侧，第二区域在外部 的周边。 以这种方式构建，该装置形成精细图案，其单位尺寸至少与所使用的光的波长一样小，同时保持较高的对比度值和较高的焦距水平。

公开(公告)号：US4847822A

公开(公告)日：1989-07-11

申请号：US71347

申请日：1987-07-09

申请人： Wasao Takasugi ,  Seiji Yonezawa ,  Toshiaki Tsuyoshi ,  Masatoshi Ohtake

发明人： Wasao Takasugi ,  Seiji Yonezawa ,  Toshiaki Tsuyoshi ,  Masatoshi Ohtake

IPC分类号： G11B7/09 ,  G11B7/095

CPC分类号： G11B7/0938 ,  G11B7/0948

摘要： An optical information recording and reproducing apparatus of a sampling servo system which effects the tracking by holding the differential output of the reproduced signals of tracking pits that are wobbled toward the right and left relative to the track of the optical disk. Reproduced signals of a plurality of pits arranged maintaining a distance on the track and wobbled toward the right or left in a servo signal region, are compared with each other to detect any abnormal condition in the tracking pits. When the abnormal condition is detected, the tracking signal that is sampled is not used, but instead the tracking signal sampled under the normal condition is continuously used to perform the tracking control.

摘要翻译： 一种采样伺服系统的光学信息记录和再现装置，其通过保持相对于光盘的轨道向左右摆动的跟踪凹坑的再现信号的差分输出来实现跟踪。 将维持轨道上的距离并且在伺服信号区域中向左或向左摆动的多个坑的再现信号彼此进行比较，以检测跟踪凹坑中的任何异常状况。 当检测到异常情况时，不使用采样的跟踪信号，而是在正常条件下采样的跟踪信号被连续地用于执行跟踪控制。

公开(公告)号：US4748611A

公开(公告)日：1988-05-31

申请号：US857088

申请日：1986-04-29

申请人： Toshiaki Tsuyoshi ,  Masatoshi Otake ,  Sachio Kumagai ,  Kazuo Ichino ,  Wasao Takasugi ,  Seiji Yonezawa

发明人： Toshiaki Tsuyoshi ,  Masatoshi Otake ,  Sachio Kumagai ,  Kazuo Ichino ,  Wasao Takasugi ,  Seiji Yonezawa

IPC分类号： G11B7/007 ,  G11B7/013 ,  G11B20/12 ,  G11B20/14 ,  G11B27/19 ,  G11B27/30 ,  H04N5/76 ,  G11B5/09

CPC分类号： G11B7/24085 ,  G11B20/1252 ,  G11B20/1403 ,  G11B27/19 ,  G11B27/3027 ,  G11B7/013 ,  G11B2020/1087 ,  G11B2020/10888 ,  G11B2220/20 ,  G11B2220/2525 ,  G11B2220/2537

摘要： In an optical disk, one turn of a recording track is divided into a number of sectors. Each of these sectors is composed of a servo field, which is stored in advance with servo information for tracking, and a data recording area which is to be written with data. A predetermined number of these sectors are joined together to form a plurality of blocks. Each of these blocks is recorded at the data recording areas of its predetermined sectors with identification information for identifying the blocks and phase synchronization loop pull-in information for read out clocks.

摘要翻译： 在光盘中，记录轨道的一圈被分成多个扇区。 这些扇区中的每一个由伺服字段组成，该伺服字段预先存储有用于跟踪的伺服信息，以及将被写入数据的数据记录区域。 这些扇区的预定数量连接在一起以形成多个块。 这些块中的每一个被记录在其预定扇区的数据记录区，其中具有用于识别块的识别信息和用于读出时钟的相位同步环插入信息。

公开(公告)号：US4710909A

公开(公告)日：1987-12-01

申请号：US692575

申请日：1985-01-18

申请人： Toshiaki Tsuyoshi ,  Seiji Yonezawa ,  Masuo Kasai ,  Motoo Uno

发明人： Toshiaki Tsuyoshi ,  Seiji Yonezawa ,  Masuo Kasai ,  Motoo Uno

IPC分类号： G11B7/013 ,  G11B7/09 ,  G11B7/095 ,  G11B21/10 ,  G11B7/00

CPC分类号： G11B7/24085 ,  G11B7/0901 ,  G11B7/0938

摘要： An optical system for recording and reproducing optical information. A line of synchronization pits for tracking and an information recording area are disposed alternately in advance. At the time of recording, a tracking signal is detected from the line of synchronization pits and while tracking in the information recording area by utilizing this signal, the information signal is recorded in the information recording area. Tracking control in tracking in the information recording area is stabilized by holding the tracking signal which is detected from the synchronization signal and by compensating for an electrical phase delay caused by the holding.

摘要翻译： 一种用于记录和再现光学信息的光学系统。 用于跟踪的一行同步凹坑和信息记录区域被预先交替地布置。 在记录时，从同步凹坑行检测跟踪信号，并且通过利用该信号在信息记录区域中进行跟踪，信息信号被记录在信息记录区域中。 通过保持从同步信号检测到的跟踪信号并补偿由保持引起的电相位延迟来稳定信息记录区中的跟踪跟踪控制。

公开(公告)号：US4703408A

公开(公告)日：1987-10-27

申请号：US674672

申请日：1984-11-26

申请人： Seiji Yonezawa ,  Yasunori Kanazawa ,  Toshiaki Tsuyoshi

发明人： Seiji Yonezawa ,  Yasunori Kanazawa ,  Toshiaki Tsuyoshi

IPC分类号： G11B7/0037 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/09 ,  G11B7/095 ,  G11B7/135 ,  G11B7/24 ,  G11B27/02 ,  G11B21/10

CPC分类号： G11B7/0045 ,  G11B27/02 ,  G11B7/0037 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/0953 ,  G11B7/1369 ,  G11B7/24 ,  G11B7/00745

摘要： A record carrier has a circular disc-shaped substrate on which a recording layer capable of optically writing information therein is disposed, and is so constructed that a plurality of circumferential reference tracks extending in a rotating direction are provided at radial intervals, the reference track being put into an optically detectable structure so as to function as an optical guide for recording information between the adjacent reference tracks. A first light beam and a second light beam are condensed by an identical objective lens so as to be respectively focused on the recording layer of the record carrier. As one of the reference tracks is being tracked by the first light beam, the second light beam is diffracted by a light diffracter so as to be spaced from the first light beam on the record carrier by desired track pitches in the radial direction thereof. Thus, data is sequentially recorded at predetermined pitches in a recording area located between the reference tracks by means of the second light beam.

摘要翻译： 记录载体具有圆形盘状基板，其上设有能够光学地写入信息的记录层，并且被构造成使得沿径向间隔设置沿旋转方向延伸的多个圆周基准轨道，该基准轨道为 放置在可光学检测的结构中，以起到用于在相邻基准轨道之间记录信息的光导体的作用。 第一光束和第二光束被相同的物镜会聚，以分别聚焦在记录载体的记录层上。 由于第一光束跟踪其中一个参考轨迹，所以第二光束被光致畸变器衍射，从而与记录载体上的第一光束沿其径向相隔所需的轨道间距。 因此，通过第二光束，以位于参考轨道之间的记录区域中的预定间距依次记录数据。

公开(公告)号：US4564929A

公开(公告)日：1986-01-14

申请号：US443871

申请日：1982-11-23

申请人： Seiji Yonezawa ,  Tatsuo Horikoshi ,  Toshiaki Tsuyoshi ,  Wasao Takasugi

发明人： Seiji Yonezawa ,  Tatsuo Horikoshi ,  Toshiaki Tsuyoshi ,  Wasao Takasugi

IPC分类号： G11B7/004 ,  G11B7/09 ,  G11B27/30 ,  G11B7/08

CPC分类号： G11B7/0901 ,  G11B27/3027 ,  G11B7/004 ,  G11B7/0938

摘要： An information recording and reproducing apparatus wherein a light beam is applied onto an optical disk having pits previously formed in optical manner thereon. A tracking signal is detected from the light beam which has been modulated by the pits, and information is recorded by applying a record beam modulated by an information signal onto an area between one pit and the succeeding pit while tracking is effected by using the tracking signal.

摘要翻译： 一种信息记录和再现装置，其中将光束施加到具有预先以光学方式形成的凹坑的光盘上。 从已经被凹坑调制的光束中检测到跟踪信号，并且通过将由信息信号调制的记录光束施加到一个凹坑和后续凹坑之间的区域上来记录信息，同时通过使用跟踪信号进行跟踪 。

公开(公告)号：US4407880A

公开(公告)日：1983-10-04

申请号：US204780

申请日：1980-11-07

申请人： Motoyasu Terao ,  Shinkichi Horigome ,  Kazuo Shigematsu ,  Yoshinori Miyamura ,  Seiji Yonezawa

发明人： Motoyasu Terao ,  Shinkichi Horigome ,  Kazuo Shigematsu ,  Yoshinori Miyamura ,  Seiji Yonezawa

IPC分类号： G03C1/705 ,  G11B7/241 ,  G11B11/00 ,  G11B23/00 ,  B32B5/00

CPC分类号： G11B23/0057 ,  G03C1/705 ,  G11B11/00 ,  G11B7/241 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B7/252 ,  G11B7/2531 ,  G11B7/2533 ,  G11B7/256 ,  Y10T428/24479 ,  Y10T428/24967 ,  Y10T428/31518 ,  Y10T428/31522 ,  Y10T428/31645 ,  Y10T428/31649 ,  Y10T428/31884 ,  Y10T428/31971

摘要： A substrate of a recording member comprising a hard base, a first organic substance layer which is formed on the base, and a second organic substance layer which is made of a solvent-soluble organic substance and which is formed on a surface of the first organic substance layer opposite to a surface thereof lying in contact with the base. This substrate can be reused.

摘要翻译： 记录部件的基板包括硬质基体，形成在基材上的第一有机物质层和由溶剂可溶性有机物质构成的第二有机物质层，该第二有机物质层形成在第一有机物的表面上 物质层与其与基底接触的表面相对。 该基材可以重复使用。

公开(公告)号：US5150339A

公开(公告)日：1992-09-22

申请号：US512116

申请日：1990-04-20

申请人： Hirotada Ueda ,  Seiji Yonezawa ,  Takashi Takeuchi

发明人： Hirotada Ueda ,  Seiji Yonezawa ,  Takashi Takeuchi

IPC分类号： G09B5/06 ,  G11B7/007 ,  G11B20/12 ,  G11B27/034 ,  G11B27/10

CPC分类号： G11B7/0079 ,  G09B5/065 ,  G11B20/1252 ,  G11B27/034 ,  G11B27/105 ,  G11B2020/1259 ,  G11B2220/211 ,  G11B2220/2537

摘要： In the present invention, there is provided an optical disk medium wherein a ROM region having data already recorded therein and capable of only optically reproducing (reading) the data as well as a RAM region capable of optically recording and reading out therein and therefrom are interlacedly located in such a positional relationship that enables the substantially continuous and high-speed accessing operation to the read-only ROM and rewritable RAM data, and some of stationary data to be stored suitably in the ROM region are stored in positional relationship closer to some of additional data to be stored suitably in the RAM region which are especially closely related to the some of the stationary data.

摘要翻译： 在本发明中，提供了一种光盘介质，其中具有已被记录在其中并且仅能光学地再现（读取）数据的ROM区域以及能够在其中光学记录和读出的RAM区域的ROM区间隔 位于这样的位置关系中，使得能够对只读ROM和可重写RAM数据进行基本上连续和高速的访问操作，并且将适当地存储在ROM区域中的一些固定数据存储在更接近于 附加数据被适当地存储在与一些固定数据特别密切相关的RAM区域中。