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    • 101. 发明申请
    • OPTICAL RECORDING METHOD, OPTICAL RECORDING DEVICE, MASTER MEDIUM EXPOSURE DEVICE, OPTICAL INFORMATION RECORDING MEDIUM, AND REPRODUCING METHOD
    • 光学记录方法,光学记录装置,主介质曝光装置,光学信息记录介质和再现方法
    • US20110044143A1
    • 2011-02-24
    • US12916035
    • 2010-10-29
    • Atsushi NakamuraIsao KobayashiShigeru Furumiya
    • Atsushi NakamuraIsao KobayashiShigeru Furumiya
    • G11B20/00
    • G11B7/0062G11B7/261G11B20/10009G11B20/10046G11B20/10055G11B2007/0013
    • An optical recording method for recording information by irradiating an optical disc medium with a modulated write pulse train of laser light variable over a plurality of power levels such that a plurality of marks are formed on the optical disc medium, edge positions of each of the marks and a space between adjacent two of the marks being utilized for recording of the information. The optical recording method includes the steps of: encoding record data to generate encoded data which is a combination of marks and spaces; classifying the encoded data according to a combination of a mark length of the mark, a space length of a first space that immediately precedes the mark, and a space length of a second space that immediately succeeds the mark; generating a write pulse train for forming the mark, in which at least one of a leading end edge position, a trailing end edge position and a pulse width of the write pulse train is changed according to a classification result; and irradiating the optical disc medium with the write pulse train generated to form the plurality of marks on the optical disc medium.
    • 一种光记录方法,用于通过在光盘介质上形成多个标记的激光的调制写入脉冲序列对光盘介质进行照射来记录信息,使得在光盘介质上形成多个标记,每个标记的边缘位置 并且相邻两个标记之间的空间用于记录信息。 光记录方法包括以下步骤:编码记录数据以生成作为标记和空格的组合的编码数据; 根据标记的标记长度,紧接在标记之前的第一空格的空格长度和紧接着标记的第二空格的间隔长度的组合对编码数据进行分类; 产生用于形成标记的写脉冲串,其中根据分类结果改变写入脉冲串的前端边缘位置,后端边缘位置和脉冲宽度中的至少一个; 以及在光盘介质上照射生成的写入脉冲串,以在光盘介质上形成多个标记。
    • 102. 发明申请
    • OPTICAL DISC DRIVE APPARATUS AND OPTICAL DISC REPRODUCTION METHOD USING THE SAME
    • 光盘驱动装置和使用该光盘的光盘再现方法
    • US20100172230A1
    • 2010-07-08
    • US12089172
    • 2006-10-04
    • Shigeru Furumiya
    • Shigeru Furumiya
    • G11B7/00
    • G11B7/126G11B7/005
    • An optical disc drive apparatus (100) of the present invention rotates an optical disc (1) at a predetermined rotation speed using a motor (2). An optical pickup (3) irradiates the optical disc (1) with a laser beam (5) emitted from its internal semiconductor laser (4), and obtains a reproduction signal (7) based on a laser beam reflected from the optical disc (1). A laser driving unit (8) controls a driving current (9) of the semiconductor laser (4) to a predetermined level, and superimposes a high-frequency current (11) having a predetermined level on the driving current (9). In a high-speed reproduction mode, a control unit (12) sets the rotation speed of the optical disc (1) higher, the power of the laser beam (5) irradiating the optical disc (1) higher, and the level of the high-frequency current (11) lower than in a normal reproduction mode.
    • 本发明的光盘驱动装置(100)使用马达(2)以预定转速使光盘(1)旋转。 光拾取器(3)利用从其内部半导体激光器(4)发射的激光束(5)照射光盘,并且基于从光盘(1)反射的激光束获得再现信号(7) )。 激光驱动单元(8)将半导体激光器(4)的驱动电流(9)控制到预定电平,并将具有预定电平的高频电流(11)叠加在驱动电流(9)上。 在高速再现模式中,控制单元(12)将光盘(1)的旋转速度设置得更高,激光束(5)照射光盘(1)的功率更高, 高频电流(11)低于正常再现模式。
    • 104. 发明授权
    • Method for recording/reproducing data on/from optical disk
    • 在光盘上记录/再现数据的方法
    • US06894965B2
    • 2005-05-17
    • US10221007
    • 2001-04-06
    • Shigeru FurumiyaMamoru Shoji
    • Shigeru FurumiyaMamoru Shoji
    • G11B7/0045G11B7/006G11B7/125G11B20/14G11B7/00
    • G11B20/1403G11B7/00456G11B7/0062
    • A shortest mark 108 is recorded with a single recording pulse. A long mark 125 is recorded with a two-stage pulse including a first-part pulse and a second-part pulse. In the case where each of positions 115 and 118 of front edges of the recording pulses is determined based on a relationship between a length of a space immediately before a mark and that of the mark itself so as to properly position the front edges of reproduced waveforms of all the mark lengths and each of positions of rear edges of the recording pulses of all the mark lengths is fixed so as to satisfy a prescribed relative relationship with an edge of a recording clock, power 122 of a recording pulse 101 of the shortest mark is determined so as to realize a proper rear edge position 112 of the reproduced waveform of the shortest mark and power 124 of a second-part pulse 104 is determined for each mark length so as to realize a proper rear edge position 123 of the reproduced waveform of the long mark.
    • 用单个记录脉冲记录最短标记108。 以包括第一部分脉冲和第二部分脉冲的两级脉冲记录长标记125。 在记录脉冲的前沿的位置115和118中的每一个基于标记之前的空间的长度与标记本身之间的关系来确定以便将再现波形的前沿正确定位的情况下 所有标记长度的所有标记长度的记录脉冲的后边缘的每个位置的每个位置是固定的,以便满足与记录时钟的边缘的规定的相对关系,最短标记的记录脉冲101的功率122 被确定为实现最短标记的再现波形的适当后边缘位置112,并且为每个标记长度确定第二部分脉冲104的功率124,以便实现再现波形的适当的后边缘位置123 的长号。
    • 106. 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。
    • 110. 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。