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    • 2. 发明授权
    • Optical rotation detecting apparatus
    • 光旋转检测装置
    • US4644157A
    • 1987-02-17
    • US471708
    • 1983-03-03
    • Kuniichi OzawaYasuhiro GotoHiromi NakaseShinya Yukino
    • Kuniichi OzawaYasuhiro GotoHiromi NakaseShinya Yukino
    • G01D5/245G01P3/486G01P13/04G01D5/34
    • G01P3/486G01D5/2451G01P13/045
    • An optical rotation detecting apparatus for a bushless dc motor detects rotation information of the shaft by the slits arranged at equal pitches along the circumference of a rotary disk and a photoelectric conversion element arranged circumferentially at a pitch which is an integral multiple of the slit pitch and including a first set of photoelectric conversion element pieces arranged alternately with the former thereby generating a first rotation information signal having a frequency proportional to the rotational speed of the shaft and a second rotation information signal having a 90-degree phase difference with the first rotation information signal. The phases of the first and second rotation information signals are compared to detect the direction of rotation of the shaft. The accuracy of rotation information can be further improved by increasing the number of photoelectric conversion element pieces per slit pitch. The photoelectric conversion element includes an amorphous silicon photoelectric conversion element.
    • 用于无衬套直流电动机的光学旋转检测装置通过沿旋转盘的圆周等间距布置的狭缝和以每个狭缝间距的整数倍的间距周向布置的光电转换元件来检测轴的旋转信息,以及 包括与前者交替布置的第一组光电转换元件片,从而产生具有与轴的转速成比例的频率的第一旋转信息信号和与第一旋转信息成90度相位差的第二旋转信息信号 信号。 比较第一和第二旋转信息信号的相位以检测轴的旋转方向。 通过增加每个狭缝间距的光电转换元件的数量,可以进一步提高旋转信息的精度。 光电转换元件包括非晶硅光电转换元件。
    • 5. 发明申请
    • Optical disc device
    • 光盘设备
    • US20060018225A1
    • 2006-01-26
    • US10538182
    • 2003-12-11
    • Hiromi NakaseHiroyuki Matsuda
    • Hiromi NakaseHiroyuki Matsuda
    • G11B7/12
    • G11B27/11G11B20/10
    • In the optical disc apparatus according to the present invention, the CPU 113 is operated to execute a control program stored in the ROM 112 to calculate a reproduction time at the time point when the power supply was turned off based on parameters after reading out from the DRAM 111 the parameters at the time point when the power supply was turned off. The CPU 113 is then operated to execute the control program stored in the ROM 112 to produce a control signal to have a display unit, not shown, display the reproduction time thus calculated, and calculate a reproduction position at the time point when the power supply was turned off based on parameters indicative of the address number and produce a control signal to have the reproduction of the reproduction information such as, for example, audio data and image data resumed.
    • 在根据本发明的光盘装置中,CPU 113被操作以执行存储在ROM 112中的控制程序,以基于从电源读出之后的参数来计算在关闭电源的时间点的再现时间 DRAM 111在电源关闭的时间点的参数。 然后,操作CPU 113以执行存储在ROM 112中的控制程序,以产生控制信号,使得具有未示出的显示单元显示如此计算的再现时间,并且计算电源的时间点的再现位置 被基于指示地址号的参数关闭,并且产生控制信号以再现诸如音频数据和图像数据的再现信息。
    • 6. 发明授权
    • Optical recording and reproducing apparatus having discrete optical
pickup heads
    • 具有离散光学拾取头的光学记录和再现装置
    • US5563855A
    • 1996-10-08
    • US338326
    • 1994-11-14
    • Hiromi NakaseWataru Masuda
    • Hiromi NakaseWataru Masuda
    • H04N5/781G11B7/00G11B7/0025G11B7/0045G11B7/14G11B20/12G11B20/14G11B27/10G11B27/30H04N5/85H04N9/797
    • G11B7/14G11B27/105G11B27/3027G11B7/0025H04N9/7973G11B2220/20G11B2220/235H04N5/85
    • An optical recording and reproducing apparatus records the audio and video signals to an optical disk by dividing the audio and video signals for one frame into top and bottom audio and video signal components. The top and bottom audio signal component are recorded to a predetermined track on disk sides A and B referenced to the rotation position detection information preformatted thereon, respectively. A mode set panel produces a mode signal for switching the operating mode. A mode determiner produces the head operation mode signal for determining the operating mode of the optical heads based on the signal. Top and bottom heads record and reproduce audio and video signals to or from the two sides A and B, respectively. Top and bottom vertical synchronization mark generators produce the vertical synchronization marks from the sector of the optical disk preformatted for recording and reproducing audio and video signals. Head actuators drive the pickup. The top head operating mode determiner, to which the operating mode data and the vertical synchronization mark signal are input, determines the operating mode of the top optical head. The bottom head mode determiner, to which the operating mode data and the bottom vertical synchronization mark signal are input, determines the operating mode of the bottom optical head.
    • 光学记录和再现装置通过将一帧的音频和视频信号分成顶部和底部音频和视频信号分量将音频和视频信号记录到光盘。 顶部和底部音频信号分量被分别记录在盘侧A和B上的预定轨道上,参考其上预先格式化的旋转位置检测信息。 模式设置面板产生用于切换操作模式的模式信号。 模式确定器产生用于基于该信号确定光头的操作模式的头操作模式信号。 顶端和底端分别将音频和视频信号分别记录到双方A和B的双方。 顶部和底部垂直同步标记发生器从预先格式化用于记录和再现音频和视频信号的光盘扇区产生垂直同步标记。 头部执行器驱动拾音器。 操作模式数据和垂直同步标记信号被输入的顶部操作模式确定器确定顶部光学头的操作模式。 操作模式数据和底部垂直同步标记信号输入的底部头模式确定器确定底部光学头的操作模式。
    • 7. 发明授权
    • Optical disc apparatus
    • 用于计算再现时间和再现位置的光盘装置
    • US07382703B2
    • 2008-06-03
    • US10538182
    • 2003-12-11
    • Hiromi NakaseHiroyuki Matsuda
    • Hiromi NakaseHiroyuki Matsuda
    • G11B7/005
    • G11B27/11G11B20/10
    • In the optical disc apparatus according to the present invention, the CPU 113 is operated to execute a control program stored in the ROM 112 to calculate a reproduction time at the time point when the power supply was turned off based on parameters after reading out from the DRAM 111 the parameters at the time point when the power supply was turned off. The CPU 113 is then operated to execute the control program stored in the ROM 112 to produce a control signal to have a display unit, not shown, display the reproduction time thus calculated, and calculate a reproduction position at the time point when the power supply was turned off based on parameters indicative of the address number and produce a control signal to have the reproduction of the reproduction information such as, for example, audio data and image data resumed.
    • 在根据本发明的光盘装置中,CPU 113被操作以执行存储在ROM 112中的控制程序,以基于从电源读出之后的参数来计算在关闭电源的时间点的再现时间 DRAM 111在电源关闭的时间点的参数。 然后,操作CPU 113以执行存储在ROM 112中的控制程序,以产生控制信号,使得具有未示出的显示单元显示如此计算的再现时间,并且计算电源的时间点的再现位置 被基于指示地址号的参数关闭,并且产生控制信号以再现诸如音频数据和图像数据的再现信息。