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    • 71. 发明授权
    • Optical information recording/reproducing device and method for
recording, reproducing and erasing information on an optical
information recording medium utilizing light beam radiation
    • 用于利用光束辐射在光学信息记录介质上记录,再现和擦除信息的光学信息记录/再现装置和方法
    • US6044051A
    • 2000-03-28
    • US827748
    • 1997-04-09
    • Naoyasu MiyagawaMamoru ShojiTakashi IshidaShigeru FurumiyaYuji Hisakado
    • Naoyasu MiyagawaMamoru ShojiTakashi IshidaShigeru FurumiyaYuji Hisakado
    • G11B7/007G11B7/013G11B20/10G11B20/12G11B27/19G11B27/30G11B7/00
    • G11B27/3027G11B20/10009G11B20/1252G11B27/19G11B7/00718G11B7/00745G11B7/013G11B2220/20
    • There is provided an optical information recording/reproducing device for recording, reproducing, or erasing information on an optical information recording medium including information tracks formed on a disk substrate including alternating groove tracks and land tracks each including: a header region for recording identification data representing location information in pre-pits; and a data region for recording user data, the pre-pits being grouped into blocks, the blocks wobbling alternately toward an inner periphery or an outer periphery of the disk substrate along a radius direction from a center line of each information track by a distance which is substantially 1/2 of the information track pitch. The pre-pits are provided along the radius direction at a pitch twice as large as the track pitch. The device includes: an optical system for radiating a light beam as a converged beam spot on an information track; an optical detector including two light receiving portions divided in parallel to the track direction for receiving the light beam reflected from the recording medium; a signal generator for generating a differential signal and an addition signal of output signals respectively output from the light receiving portions; a header region detection circuit for determining whether the converged beam spot is tracing the header region or the data region using the differential signal; and at least one reading circuit for reading the identification data from the differential signal and for reading information recorded in the data region from the addition signal.
    • 提供了一种光学信息记录/再现装置,用于在包括形成在包括交替的凹槽轨道和脊迹道的盘基底上的信息轨迹的光信息记录介质上记录,再现或擦除信息,所述光盘信息记录介质包括:标题区,用于记录表示 预坑中的位置信息; 以及用于记录用户数据的数据区域,将预定凹坑分组成块,块沿着每个信息轨道的中心线沿半径方向交替地向盘基板的内周或外周摆动一距离 基本上为信号轨道间距的+ E,fra 1/2 + EE。 预制坑沿着半径方向以轨道间距的两倍大的间距设置。 该装置包括:用于在信息轨道上辐射作为会聚束斑的光束的光学系统; 光检测器,其包括与轨道方向平行分割的两个光接收部分,用于接收从记录介质反射的光束; 信号发生器,用于产生分别从光接收部分输出的差分信号和输出信号的相加信号; 标题区域检测电路,用于使用所述差分信号来确定所述会聚波束点是跟踪所述头部区域还是所述数据区域; 以及至少一个读取电路,用于从差分信号读取识别数据,并用于从加法信号读取记录在数据区中的信息。
    • 74. 发明授权
    • Optical disk recording device, method for recording data on optical disk, and optical disk
    • 光盘记录装置,在光盘上记录数据的方法和光盘
    • US08223609B2
    • 2012-07-17
    • US13271346
    • 2011-10-12
    • Shigeru Furumiya
    • Shigeru Furumiya
    • G11B7/00
    • G11B7/00456G11B7/00736G11B2007/0013
    • According to a method of the present invention for recording data on an optical disk, a recording pulse corresponding to a long mark includes a combination of a leading pulse and a subsequent intermediate pulse. Further, a level of the leading pulse indicates a first recording power, and a level of the intermediate pulse indicates a second recording power. When an optical disk includes a plurality of recording layers, a ratio of the second recording power to the first recording power is determined for each recording layer. When the recording speed is variable, the ratio of the second recording power to the first recording power is determined for each recording speed.
    • 根据本发明的用于在光盘上记录数据的方法,对应于长标记的记录脉冲包括前导脉冲和后续中间脉冲的组合。 此外,前导脉冲的电平表示第一记录功率,中间脉冲的电平表示第二记录功率。 当光盘包括多个记录层时,为每个记录层确定第二记录功率与第一记录功率的比率。 当记录速度可变时,针对每个记录速度确定第二记录功率与第一记录功率的比率。
    • 75. 发明授权
    • Optical disc verification method and optical disc medium
    • 光盘验证方法和光盘介质
    • US07990820B2
    • 2011-08-02
    • US12369870
    • 2009-02-12
    • Shigeru FurumiyaAtsushi Nakamura
    • Shigeru FurumiyaAtsushi Nakamura
    • G11B5/09
    • G11B7/00458G11B7/00736G11B7/268G11B20/10009G11B20/10314G11B20/10379G11B2020/1099G11B2220/218G11B2220/2541
    • An optical disc verification method according to the present invention includes the steps of: writing data on first, second and third radial locations on an optical disc at a writing speed V1 and reading the data written there, thereby measuring read signal quality index values A, B and C, where the second radial location is inside of the first radial location and the third radial location is inside of the second radial location; writing data on the first and second radial locations at a writing speed V2, which is higher than V1, and reading the data written there, thereby measuring read signal quality index values D and E; and correcting the signal quality index value C with the difference between the signal quality index values B and E, thereby calculating a signal quality index value F that would be obtained if data is written on, and then read from, the third radial location at the speed V2.
    • 根据本发明的光盘验证方法包括以下步骤:以写入速度V1在光盘上的第一,第二和第三径向位置上写入数据,并读取写在其上的数据,从而测量读取信号质量指数值A, B和C,其中第二径向位置在第一径向位置内,第三径向位置在第二径向位置内; 以高于V1的写入速度V2在第一和第二径向位置上写入数据,并读取写入的数据,从而测量读取信号质量指标值D和E; 并且用信号质量指标值B和E之间的差校正信号质量指标值C,由此计算如果数据被写入的第三径向位置上的数据被读取,然后读取,则获得的信号质量指标值F 速度V2。
    • 77. 发明申请
    • INFORMATION RECORDING MEDIUM, RECORDING APPARATUS, REPRODUCING APPARATUS AND REPRODUCING METHOD
    • 信息记录介质,记录装置,再现装置和再现方法
    • US20100302921A1
    • 2010-12-02
    • US12745086
    • 2009-11-19
    • Tomoyasu TakaokaShigeru FurumiyaNaoyasu Miyagawa
    • Tomoyasu TakaokaShigeru FurumiyaNaoyasu Miyagawa
    • G11B19/00G11B7/26G11B7/00
    • G11B7/126G11B7/24038
    • An information recording medium, comprising N number (N is an integer fulfilling N≧3) of information layers on which information is recordable, and allowing information to be recorded on each of the information layers and allowing information recorded on each of the information layers to be reproduced by being irradiated with laser light. The N number of information layers include an N'th information layer, an (N−1)th information layer, an (N−2)th information layer, . . . a second information layer and a first information layer sequentially located from a laser light incidence side. A reflectance of the N'th information layer is RN, and a reflectance of an M'th information layer (M refers to every integer fulfilling N>M≧1) is RM. The laser light used to irradiate the N'th information layer for reproducing information recorded on the N'th information layer has an upper limit reproduction power PrNmax, and the laser light used to irradiate the M'th information layer for reproducing information recorded on the M'th information layer has an upper limit reproduction power PrMmax. The following expressions (1) and (2) are concurrently fulfilled: RN>RM   (1) PrNmax
    • 一种信息记录介质,包括可记录信息的信息层的N个数(N是满足N≥3的整数),并且允许将信息记录在每个信息层上并允许记录在每个信息层上的信息 通过用激光照射来再现。 N个信息层包括第N个信息层,第(N-1)个信息层,第(N-2)个信息层。 。 。 第二信息层和从激光入射侧依次定位的第一信息层。 第N个信息层的反射率为RN,第M个信息层(M为满足N>M≥1的每个整数)的反射率为RM。 用于照射第N信息层的用于再现记录在第N信息层上的信息的激光具有上限再现功率PrNmax,并且用于照射第M个信息层的激光用于再现记录在第N信息层上的信息 第M个信息层具有上限再现功率PrMmax。 同时满足下列表达式(1)和(2):RN> RM(1)PrNmax