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    • 5. 发明授权
    • Recording/reproducing apparatus
    • 记录/再现装置
    • US6154338A
    • 2000-11-28
    • US841237
    • 1997-04-28
    • Shinkichi SasakiHarutaka Sekiya
    • Shinkichi SasakiHarutaka Sekiya
    • G11B17/02G11B17/04G11B17/043G11B33/02G11B15/00G11B23/02
    • G11B17/043G11B17/0405G11B33/027
    • On the upper surface of a cartridge case 4, there are formed a pair of press protrusions 4a situated on both sides thereof, a recess 4b situated between the two press protrusions 4a, first and second swelled portions 4c and 4d situated at the front and rear ends of the recess 4b of the cartridge case 4 and stopper protrusions 4e formed so as to continuously extend from both sides of the rear end of the second swelled portion 4d, the configurations of the front and rear end surfaces with respect to the direction in which the disc cartridge 3 is inserted being different from each other. On a front plate 1 having an opening 2 into which this disc cartridge 3 is to be inserted, there are formed a pair of protrusions 1a protruding downwards from the upper side of the opening 2 and a pair of reverse insertion preventing sections 1b situated on the inner side of these protrusions 1a, wherein the contour of the protrusions 1a substantially coincides with the configuration of the recess 4b at the rear end surface of the cartridge case 4, and wherein the contour of the protrusions 1a and the reverse insertion preventing sections 1b put together substantially coincides with the configuration of the recess 4b at the front end surface of the cartridge case 4.
    • 在盒壳体4的上表面上形成有位于其两侧的一对按压凸起4a,位于两个挤压突起4a之间的凹部4b,位于前后的第一和第二隆起部4c和4d 盒壳体4的凹部4b的端部和止动突起4e,其形成为从第二隆起部分4d的后端的两侧连续延伸,前端表面和后端表面相对于其中 盘盒3被插入彼此不同。 在具有要插入盘盒3的开口2的前板1上形成有从开口2的上侧向下突出的一对突起1a和位于其上的一对反向插入防止部1b 这些突起1a的内侧,突起1a的轮廓基本上与盒壳体4的后端面上的凹部4b的构造一致,并且突起1a和反向插入防止部1b的轮廓放置 一起基本上与盒壳体4的前端面处的凹部4b的构造一致。
    • 7. 发明授权
    • Optical beam system for optical disk drives
    • 用于光盘驱动器的光束系统
    • US5220550A
    • 1993-06-15
    • US735984
    • 1991-07-25
    • Masaru NakayamaHarutaka SekiyaIchiro Morishita
    • Masaru NakayamaHarutaka SekiyaIchiro Morishita
    • G11B7/085G11B7/09G11B11/105
    • G11B7/0901G11B11/10576G11B7/08564
    • An optical system comprises an objective lens for moving along a recording face of an optical disk in the radial direction of the optical disk so that an optical axis thereof is almost perpendicular to the recording face, a reflecting mirror for moving together with the objective lens and whose reflecting axis extends in the radial direction, a detection optical unit, a movable mirror located to incline with respect to the optical axis extending almost parallel to the recording face from the detection optical unit and the reflecting axis of the reflecting mirror, and a mirror drive portion for rotating the movable mirror on an axis almost parallel to the recording face and shaking a light beam radiated from the objective lens onto the recording face in the radial direction. The mirror drive portion rotates the movable mirror on an axis almost parallel to an optical axis extending from the detection optical unit or on an axis almost parallel to a reflecting face of the movable mirror. Reflecting axes of the reflecting face are disposed on the same plane parallel to the recording face.
    • 一种光学系统包括:物镜,沿着光盘的径向方向沿着光盘的记录面移动,使得其光轴几乎垂直于记录面,用于与物镜一起移动的反射镜和 其反射轴沿径向延伸,检测光学单元,相对于从检测光学单元和反射镜的反射轴几乎平行于记录面延伸的光轴倾斜的可移动镜,以及镜 驱动部分,用于在几乎平行于记录面的轴上旋转可移动反射镜,并将从物镜辐射的光束沿径向方向摇动到记录面上。 反射镜驱动部在与检测光学单元延伸的光轴大致平行的轴上或大致平行于可动镜的反射面的轴上旋转可动镜。 反射面的反射轴设置在与记录面平行的同一平面上。
    • 8. 发明授权
    • Optical disk drive detecting disk surface deviation
    • 光盘驱动器检测盘表面偏差
    • US07440373B2
    • 2008-10-21
    • US10771503
    • 2004-02-05
    • Harutaka Sekiya
    • Harutaka Sekiya
    • G11B7/00
    • G11B7/0956G11B7/0945
    • An optical disk drive capable of detecting a surface deviation of a disk during a very short period includes an analog-to-digital converter (ADC) converting a focus error signal output from a pickup into digital data, and a central processing unit (CPU) writing an output of the ADC to a memory during one rotation of a motor according to a timing of a pulse signal output from a spindle motor. After that, the CPU reads data written to the memory and obtains a sine curve that minimizes the sum of squares of errors among data by a least square method. The CPU obtains a peak-to-peak value of the obtained sine curve and compares the peak-to-peak value to a predetermined threshold value, thereby determining the existence of the surface deviation of the disk.
    • 能够在非常短的时间内检测盘的表面偏离的光盘驱动器包括将从拾取器输出的聚焦误差信号转换为数字数据的模数转换器(ADC),以及中央处理单元(CPU) 根据从主轴电机输出的脉冲信号的定时,在马达的一次旋转期间将ADC的输出写入存储器。 之后,CPU读取写入存储器的数据,并获得使数据之间的误差平方和最小化的正弦曲线。 CPU获得所获得的正弦曲线的峰 - 峰值,并将峰 - 峰值与预定阈值进行比较,从而确定盘的表面偏差的存在。
    • 10. 发明授权
    • Device and method of recording information on an optical disc
    • 在光盘上记录信息的装置和方法
    • US07411886B2
    • 2008-08-12
    • US11283834
    • 2005-11-22
    • Harutaka SekiyaYuichiro Tomishima
    • Harutaka SekiyaYuichiro Tomishima
    • G11B7/00
    • G11B7/126G11B7/0045G11B7/1263
    • A device for recording information on an optical disc so as to improve the recording quality of the information when a recording operation has just started. The recording device includes a luminous element radiating a light for recording information on the optical disc; a radiation intensity controller constantly controlling an intensity of radiation of the light radiated by the luminous element; a constant outputting unit providing a constant energy to the luminous element; a selector selectively selecting one of the outputs of the intensity of radiation controller and the constant outputting unit; wherein, the selector selects the output from the constant outputting unit during a predetermined duration from a starting time of recording the information on the optical disc, and selects the output from the intensity of radiation controller afterward.
    • 一种用于在光盘上记录信息的装置,以便当记录操作刚开始时提高信息的记录质量。 记录装置包括:发光部件,用于在光盘上记录信息; 辐射强度控制器恒定地控制由发光元件辐射的光的辐射强度; 恒定的输出单元,为发光元件提供恒定的能量; 选择器选择性地选择辐射控制器和恒定输出单元的强度的输出之一; 其中,选择器从在光盘上记录信息的开始时间起的预定时间内选择来自恒定输出单元的输出,然后从辐射控制器的强度中选择输出。