会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 103. 发明授权
    • Optical disc including a plurality of data layers
    • 光盘包括多个数据层
    • US07203155B2
    • 2007-04-10
    • US11187868
    • 2005-07-25
    • Atsushi NakamuraMamoru ShojiTakashi Ishida
    • Atsushi NakamuraMamoru ShojiTakashi Ishida
    • G11B3/70
    • G11B7/00745G11B7/00454G11B7/0901G11B7/0908G11B7/0956G11B7/126G11B7/1267G11B2007/0013
    • When recording or reading an optical disc having plural data recording layers, which data recording layer the light spot is focused on is detected to improve playback signal quality and signals written to the layer on which the light spot is focused are read more reliably. A convergent lens converges the laser beam on the optical disc, and a focus controller controls the focal point of the laser beam on the data layer. A tracking controller positions and tracks the focal point of the laser beam converged by the convergent lens on a track of the optical disc. A photodetector detects the reflected laser beam from the disc. A convergence detector then detects the convergence state of the laser beam emitted to the plural data recording layers. Based on output from the convergence detector, the laser driver is controlled to separately set beam power appropriately for each of the plural data layers of the disc during playback.
    • 当记录或读取具有多个数据记录层的光盘时,检测到该光斑聚焦的哪个数据记录层以提高重放信号质量,并且更可靠地读取写入到其上聚焦光点的层的信号。 会聚透镜将激光束会聚在光盘上,并且聚焦控制器控制激光束在数据层上的焦点。 跟踪控制器将由会聚透镜会聚的激光束的焦点定位和跟踪在光盘的轨道上。 光电检测器检测来自盘的反射激光束。 然后,会聚检测器检测发射到多个数据记录层的激光束的会聚状态。 基于会聚检测器的输出,激光驱动器被控制为在回放期间对盘的多个数据层中的每一个分别设置光束功率。
    • 107. 发明授权
    • Optical disc drive for controlling reproduction of an optical disc having a plurality of data layers
    • 用于控制具有多个数据层的光盘的再现的光盘驱动器
    • US06990055B1
    • 2006-01-24
    • US10018363
    • 2000-06-21
    • Atsushi NakamuraMamoru ShojiTakashi Ishida
    • Atsushi NakamuraMamoru ShojiTakashi Ishida
    • G11B5/55
    • G11B7/00745G11B7/00454G11B7/0901G11B7/0908G11B7/0956G11B7/126G11B7/1267G11B2007/0013
    • When recording or reading an optical disc having plural data recording layers, which data recording layer the light spot is focused on is detected to improve playback signal quality and signals written to the layer on which the light spot is focused are read more reliably. A convergent lens converges the laser beam on the optical disc, and a focus controller controls the focal point of the laser beam on the data layer. A tracking controller positions and tracks the focal point of the laser beam converged by the convergent lens on a track of the optical disc. A photodetector detects the reflected laser beam from the disc. A convergence detector then detects the convergence state of the laser beam emitted to the plural data recording layers. Based on output from the convergence detector, the laser driver is controlled to separately set beam power appropriately for each of the plural data layers of the disc during playback.
    • 当记录或读取具有多个数据记录层的光盘时,检测到该光斑聚焦的哪个数据记录层以提高重放信号质量,并且更可靠地读取写入到其上聚焦光点的层的信号。 会聚透镜将激光束会聚在光盘上,并且聚焦控制器控制激光束在数据层上的焦点。 跟踪控制器将由会聚透镜会聚的激光束的焦点位置并跟踪在光盘的轨道上。 光电检测器检测来自盘的反射激光束。 然后,会聚检测器检测发射到多个数据记录层的激光束的会聚状态。 基于会聚检测器的输出,激光驱动器被控制为在回放期间对盘的多个数据层中的每一个分别设置光束功率。
    • 109. 发明授权
    • Recording medium, method and apparatus for reproducing, and method and apparatus for recording
    • 用于再现的记录介质,方法和装置,以及用于记录的方法和装置
    • US06973020B2
    • 2005-12-06
    • US10221329
    • 2001-04-16
    • Mamoru ShojiAtsushi NakamuraTakashi IshidaYuji Hisakado
    • Mamoru ShojiAtsushi NakamuraTakashi IshidaYuji Hisakado
    • G11B7/00G11B7/0045G11B7/005G11B7/007G11B19/12G11B7/24
    • G11B19/125G11B7/0045G11B7/005G11B7/007G11B7/00718G11B19/128G11B2007/0013
    • In a recording medium which is circular and has first and second recording layers, the first and second recording layers each include one or more first tracks extending concentrically or spirally and one or more second tracks extending concentrically or spirally, each of the one or more first tracks and the one or more second tracks includes a plurality of first sectors and a plurality of second sectors, each of the plurality of first sectors includes first and second regions, each of the plurality of second sectors includes third and fourth regions, first and second grooves are formed in each of the second and fourth regions, the first and second grooves extending concentrically or spirally and oscillating sinusoidally, oscillation of the first groove has a first oscillation characteristic at a first prescribed position in the second region, oscillation of the second groove has a second oscillation characteristic at a second prescribed position in the fourth region, and the first and second oscillation characteristics are different from each other.
    • 在圆形并具有第一和第二记录层的记录介质中,第一和第二记录层各自包括同心或螺旋状延伸的一个或多个第一轨道和同心或螺旋地延伸的一个或多个第二轨道,一个或多个第一记录层 轨道,并且一个或多个第二轨道包括多个第一扇区和多个第二扇区,多个第一扇区中的每一个包括第一和第二区域,多个第二扇区中的每一个包括第三和第四区域,第一和第二区域 在第二和第四区域的每一个中形成有槽,第一和第二槽同心或螺旋地延伸并正弦振荡,第一槽的振荡在第二区域的第一规定位置处具有第一振荡特性,第二槽的振荡 在第四区域的第二规定位置具有第二振荡特性, 第二振荡特性彼此不同。