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    • 51. 发明授权
    • Optical recording and reproducing apparatus and optical recording and reproducing method
    • 光学记录和再现装置以及光学记录和再现方法
    • US07715294B2
    • 2010-05-11
    • US11705302
    • 2007-02-12
    • Tatsuya TamakiJumpei Kura
    • Tatsuya TamakiJumpei Kura
    • G11B7/0045
    • G11B7/0062G11B7/1267
    • An optical recording and reproducing apparatus includes a recording-pulse-shift setting unit that shifts a front edge and a rear edge of a recording pulse and sets a write strategy of the recording pulse, an mark-edge-position evaluating unit that detects a front edge and a rear edge of a mark formed and detects a front mark edge position error and a rear mark edge position error, an assuming unit that assumes that the front mark edge position error is represented by a first linear function and assumes that the rear mark edge position error is represented by a second linear function, a sensitivity calculating unit that executes test recording and calculates sensitivities, and a write-strategy calculating unit that calculates a write strategy of the recording pulse on the basis of the sensitivities.
    • 一种光学记录和再现装置包括记录脉冲移位设置单元,其移动记录脉冲的前边缘和后边缘并设置记录脉冲的写入策略;标记边缘位置评估单元,其检测前端 边缘和形成的标记的后边缘,并且检测前标记边缘位置误差和后标记边缘位置误差,假定前标记边缘位置误差由第一线性函数表示的假设单元,并且假定后标记 边缘位置误差由第二线性函数表示,灵敏度计算单元执行测试记录并计算灵敏度;以及写入策略计算单元,其根据灵敏度计算记录脉冲的写入策略。
    • 54. 发明申请
    • FABRICATION METHOD OF MULTILAYER OPTICAL RECORD MEDIUM AND RECORDING APPARATUS FOR MULTILAYERED OPTICAL RECORD MEDIUM
    • 多层光学记录介质的制造方法和多层光记录介质的记录装置
    • US20100046349A1
    • 2010-02-25
    • US12593036
    • 2007-03-29
    • Masaharu NakanoMasakazu OgasawaraMakoto Sato
    • Masaharu NakanoMasakazu OgasawaraMakoto Sato
    • G11B7/00G11B7/0045
    • G11B7/26G11B7/0045G11B7/00745G11B7/0908G11B7/24038
    • A fabrication method of a multilayer optical recording medium having a plurality of recording layers, comprises a step of preparing an optical recording medium having at least one record area; a write-position mark generating step of recording write-position marks in the record area beforehand; a step of preparing an optical system including a common objective lens to focus a data recording beam and a position mark recording beam on different positions in a thickness direction of the record area; a first data writing step of writing data between the write-position marks with following the write-position marks by the data recording beam; a position mark recording step of, in parallel with the first data writing step, recording new write-position marks in the record area by the position mark recording beam; and a second data writing step of writing data between the new write-position marks with following the new write-position marks by the data recording beam.
    • 一种具有多个记录层的多层光学记录介质的制造方法,包括制备具有至少一个记录区域的光学记录介质的步骤; 写入位置标记生成步骤,预先在记录区域中记录写入位置标记; 准备包括用于将数据记录光束和位置标记记录光束聚焦在记录区域的厚度方向上的不同位置上的公共物镜的光学系统的步骤; 第一数据写入步骤,在写入位置标记之间通过数据记录光束跟随写入位置标记来写入数据; 位置标记记录步骤,与第一数据写入步骤并行,通过位置标记记录光束在记录区域中记录新的写入位置标记; 以及第二数据写入步骤,用于通过数据记录光束在新的写入位置标记之间写入新的写入位置标记之间的数据。
    • 57. 发明授权
    • Recording method and apparatus using write pulse waveforms
    • 使用写入脉冲波形的记录方法和装置
    • US07551536B2
    • 2009-06-23
    • US12180681
    • 2008-07-28
    • Atsushi NakamuraShigeru Furumiya
    • Atsushi NakamuraShigeru Furumiya
    • G11B7/0045
    • G11B7/0062
    • A data recording method according to the present invention is a method for recording data as edge position information, including marks and spaces of multiple different lengths, on a storage medium by irradiating the storage medium with a pulsed energy beam. The method includes the steps of: (A) generating a write code sequence based on the data to be recorded; (B) determining a write pulse waveform, defining the power modulation of the energy beam, according to the code lengths of respective codes included in the write code sequence; and (C) modulating the power of the energy beam based on the write pulse waveform. If the shortest code length of the write code sequence is n (which is an integer equal to or greater than one), a write pulse waveform that has only one write pulse is assigned to recording mark making periods corresponding to codes with code lengths x of n, n+1 and n+2, and a write pulse waveform that has multiple write pulses Pw is assigned to recording mark making periods corresponding to codes with code lengths x of n+3 or more.
    • 根据本发明的数据记录方法是通过用脉冲能量束照射存储介质,将数据作为边缘位置信息(包括多个不同长度的标记和间隔)记录在存储介质上的方法。 该方法包括以下步骤:(A)基于要记录的数据生成写代码序列; (B)根据包含在写代码序列中的各个代码的码长,确定写入脉冲波形,定义能量束的功率调制; 和(C)基于写入脉冲波形调制能量束的功率。 如果写代码序列的最短代码长度为n(其为等于或大于1的整数),则仅具有一个写脉冲的写脉冲波形被分配给与代码长度为x的代码相对应的记录标记制作周期 n,n + 1和n + 2,并且具有多个写入脉冲Pw的写入脉冲波形被分配给与代码长度为x + 3或更大的代码相对应的记录标记制作周期。
    • 59. 发明授权
    • Information readout method for non mask layer type optical information medium
    • 非掩模层型光信息介质的信息读出方法
    • US07496019B2
    • 2009-02-24
    • US10125476
    • 2002-04-19
    • Takashi KikukawaTatsuya KatoHajime UtsunomiyaHiroshi Shingai
    • Takashi KikukawaTatsuya KatoHajime UtsunomiyaHiroshi Shingai
    • G11B7/0045
    • G11B7/005G11B7/1263G11B7/24
    • An information readout method for an optical information medium comprising an information recording layer having pits or recorded marks representative of information data involves the step of irradiating a laser beam to the information recording layer through an objective lens for providing readings of the pits or recorded marks. When the laser beam has a wavelength λ of 400 to 410 nm, the objective lens has a numerical aperture NA of 0.70 to 0.85, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 0.4 mW for the laser beam. When the laser beam has a wavelength λ of 630 to 670 nm, the objective lens has a numerical aperture NA of 0.60 to 0.65, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 1.0 mW for the laser beam. Pits or recorded marks of a size approximate to the resolution limit determined by diffraction can be read out at a high C/N.
    • 包括具有表示信息数据的凹坑或记录标记的信息记录层的光信息介质的信息读出方法包括通过用于提供凹坑或记录标记的读数的物镜将激光束照射到信息记录层的步骤。 当激光束具有400至410nm的波长λ时,物镜的数值孔径NA为0.70至0.85,并且凹坑或记录标记具有高达0.36λ/ NA的最小尺寸PL,读出被执行 在激光束的功率Pr为至少0.4mW。 当激光束具有630至670nm的波长λ时,物镜的数值孔径NA为0.60至0.65,并且凹坑或记录的标记具有高达0.36λ/ NA的最小尺寸PL,读出被执行 在激光束的功率Pr为至少1.0mW。 通过衍射确定的大小接近分辨率极限的刻痕或记录标记可以高C / N读出。