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1. 发明授权

US06442115B1 Information recording apparatus 失效
标题翻译：信息记录装置
公开(公告)号：US06442115B1
公开(公告)日：2002-08-27
申请号：US09386338
申请日：1999-08-31
申请人： Yoshitaka Shimoda , Masayoshi Yoshida , Naoharu Yanagawa
发明人： Yoshitaka Shimoda , Masayoshi Yoshida , Naoharu Yanagawa
IPC分类号： G11B700
CPC分类号： G11B7/126 , G11B7/0045 , G11B19/28
摘要： An information recording apparatus (S) records record information onto an optical disc (1), which corresponds to a CLV (Constant Linear Velocity) method to keep a linear velocity of the optical disc constant when reproducing the record information from the optical disc. The information recording apparatus is provided with: an optical pickup (14) having a laser (14a) for irradiating a light beam (B) from the laser onto a record track of the optical disc and for detecting a reflected light from the optical disc; a rotation controlling device (11, 17 to 20) for rotation-controlling the optical disc to keep a rotation angular velocity of the optical disc constant when recording the record information onto the optical disc; and a laser drive controlling device (11, 15, 16) for obtaining an optimum value of a laser driving amount for the optical pickup in correspondence with a linear velocity of the record track of the rotation-controlled optical disc with respect to the optical pickup and for drive-controlling the laser by use of the obtained optimum value of the laser driving amount.
摘要翻译：信息记录装置（S）将记录信息记录到光盘（1）上，该记录信息对应于当从光盘再现记录信息时保持光盘的线速度恒定的CLV（恒定线速度）方法。信息记录装置具有：具有用于将来自激光的光束（B）照射到光盘的记录轨道上并用于检测来自光盘的反射光的激光器的光学拾取器（14）; 旋转控制装置（11,17至20），用于当将记录信息记录在光盘上时，旋转控制光盘以保持光盘的旋转角速度恒定; 以及激光驱动控制装置（11,15,16），用于根据旋转控制光盘的记录轨道相对于光学拾取器的线速度获得用于光学拾取器的激光驱动量的最佳值并且通过使用获得的激光驱动量的最佳值来驱动控制激光。

2. 发明授权

US06339581B1 Disc player having a prepit detecting circuit 失效
标题翻译：光盘播放器具有预坑检测电路
公开(公告)号：US06339581B1
公开(公告)日：2002-01-15
申请号：US09425178
申请日：1999-10-22
申请人： Masayoshi Yoshida , Yoshitaka Shimoda , Naoharu Yanagawa , Shinichi Nagahara
发明人： Masayoshi Yoshida , Yoshitaka Shimoda , Naoharu Yanagawa , Shinichi Nagahara
IPC分类号： G11B700
CPC分类号： G11B7/005 , G11B7/00745
摘要： A disc player having a prepit detecting circuit which can correctly detect prepits even if phases or amplitude levels of a plurality of read signals read out from a recording disc are deviated from each other. A phase difference between a first read signal and a second read signal read out by first and second reading elements arranged in two regions divided along the direction of recording tracks of a recording disc is detected. A first phase correction read signal is obtained by adjusting the phase of the first read signal by an amount according to the phase difference. A differential value between the first phase correction read signal and the second read signal is outputted as a prepit detection signal.
摘要翻译：即使从记录盘读出的多个读取信号的相位或幅度水平彼此偏离，也可以正确地检测预凹坑的预制坑检测电路。检测由沿着记录盘的记录轨道的方向划分的两个区域中排列的第一和第二读取元件读出的第一读取信号和第二读取信号之间的相位差。通过根据相位差调整第一读取信号的相位来获得第一相位校正读取信号。输出第一相位校正读取信号和第二读取信号之间的差分值作为预坑检测信号。

3. 发明授权

US06577565B1 Optical pickup for performing recording or reading operation on recording medium having prepits 有权
标题翻译：用于在具有预凹坑的记录介质上执行记录或读取操作的光学拾取器
公开(公告)号：US06577565B1
公开(公告)日：2003-06-10
申请号：US09348124
申请日：1999-07-02
申请人： Naoharu Yanagawa , Masayoshi Yoshida , Yoshitaka Shimoda
发明人： Naoharu Yanagawa , Masayoshi Yoshida , Yoshitaka Shimoda
IPC分类号： G11B7095
CPC分类号： G11B7/1356 , G11B7/005 , G11B7/0909
摘要： An optical pickup for reading information from a recording medium having a plurality of prepits or for recording information onto the recording medium is provided. The optical pickup includes: a light emitting device for emitting a light beam to the recording medium; a dividing device for dividing the light beam reflected by the recording medium into a first divided beam and a second divided beam; an astigmatism producing device for producing astigmatism in the first divided beam; a first light receiving device for receiving the first divided beam from the astigmatism producing device; and a second light receiving device for receiving the second divided beam from the dividing device.
摘要翻译：提供一种用于从具有多个预凹坑的记录介质读取信息或用于将信息记录到记录介质上的光学拾取器。光拾取器包括：用于向记录介质发射光束的发光装置; 用于将由记录介质反射的光束划分成第一分割光束和第二分割光束的分割装置; 用于在第一分割光束中产生像散的散光产生装置; 第一光接收装置，用于从散光产生装置接收第一划分光束; 以及用于从分割装置接收第二分割光束的第二光接收装置。

4. 发明授权

US5764610A Optical disk type identification system using a frequency detector 失效
标题翻译：使用频率检测器的光盘类型识别系统
公开(公告)号：US5764610A
公开(公告)日：1998-06-09
申请号：US784383
申请日：1997-01-17
申请人： Masayoshi Yoshida , Naoharu Yanagawa
发明人： Masayoshi Yoshida , Naoharu Yanagawa
IPC分类号： G11B7/00 , G11B7/004 , G11B19/12 , G11B19/28 , G11B23/36 , G11B3/90
CPC分类号： G11B19/12 , G11B23/36
摘要： A disc type identifying system for efficiently identifying one optical disc type from others having different recording formats, though having the same size and shape, is provided. The disc type identifying system comprises driver for rotating a disc to be identified a predetermined number of rotations; frequency detector for detecting frequency of a playback signal from the disc to be identified; and identifier for identifying the disc type based on the frequency of the playback signal detected when the disc to be identified is rotated the predetermined number of rotations. The predetermined number of rotations is set at the lowest linear speed among linear speeds defined in the different recording formats. Because the disc type may be identified in the process of a startup operation of a combination unit by constructing as described above, the startup time may be shortened, thus enhancing the efficiency of the system.
摘要翻译：提供了具有相同尺寸和形状的用于从具有不同记录格式的其他光盘类型有效地识别一种光盘类型的光盘类型识别系统。盘型识别系统包括用于旋转盘以便识别预定转数的驱动器; 频率检测器，用于检测来自要识别的盘的重放信号的频率; 以及用于基于当要识别的盘旋转预定转数时检测到的重放信号的频率来识别光盘类型的标识符。在不同记录格式中定义的线速度之间，将预定转数设定在最低线速度。因为通过如上所述构造，可以在组合单元的启动操作的过程中识别光盘类型，所以可以缩短启动时间，从而提高系统的效率。

5. 发明申请

US20150124249A1 LIGHT MEASUREMENT APPARATUS 有权
标题翻译：轻量测量装置
公开(公告)号：US20150124249A1
公开(公告)日：2015-05-07
申请号：US14407626
申请日：2012-06-15
申请人： Naoharu Yanagawa
发明人： Naoharu Yanagawa
IPC分类号： G01J3/02
CPC分类号： G01J3/0254 , G01J1/08 , G01J2001/0481
摘要： The light measurement apparatus according to the present invention includes: an integrating sphere; a reference calibration light source body holding unit that is arranged on the integrating sphere and to which a reference calibration light source body is attached; a test light source body holding unit that is arranged on the integrating sphere and to which a test light source body to be measured is attached; a light detection unit that is arranged on the integrating sphere and detects light from the reference calibration light source body and the test light source body; and a control unit that controls lighting of the reference calibration light source body and the test light source body, the light measurement apparatus being configured so that only either one of the reference calibration light source body and the test light source body is able to selectively emit light in the integrating sphere.
摘要翻译：根据本发明的光测量装置包括：积分球; 参考校准光源体保持单元，其布置在所述积分球上并附着有基准校准光源体; 测试光源体保持单元，其布置在所述积分球上，并且附接有待测量的测试光源体; 光检测单元，布置在积分球上并检测来自基准校准光源体和测试光源体的光; 以及控制单元，其控制所述基准校准光源体和所述测试光源体的照明，所述光测量装置被配置为使得仅所述参考校准光源体和所述测试光源体中的任一个能够选择性地发射光在积分球。

6. 发明授权

US07961579B2 Information reproduction apparatus 失效
标题翻译：信息再生装置
公开(公告)号：US07961579B2
公开(公告)日：2011-06-14
申请号：US12445508
申请日：2006-10-17
申请人： Kazuo Kuroda , Naoharu Yanagawa
发明人： Kazuo Kuroda , Naoharu Yanagawa
IPC分类号： G11B7/00
CPC分类号： G11B19/12 , G11B2007/0006
摘要： When a medium selection button 101 is operated, an optical disc reproduction apparatus 1 recognizes which medium is selected according to inputted medium selection information, and then opens a tray 104. Next, when a medium selection button 101 is operated, the optical disc reproduction apparatus 1 determines the inputted medium selection information and closes the tray 104. Next, the optical disc reproduction apparatus 1 acquires a priority list 16 and modifies the priority list 16 such that the order of the selected medium in the priority list 16 is a first priority and the remaining orders of the other media are successively lowered. The optical disc reproduction apparatus 1 performs a medium check for each of the media in accordance with the orders of the modified priority list 16.
摘要翻译：当操作介质选择按钮101时，光盘再现装置1根据输入的介质选择信息识别哪个介质被选择，然后打开托盘104.接下来，当操作介质选择按钮101时，光盘再现设备 1确定输入的介质选择信息并关闭托盘104.接下来，光盘再现设备1获取优先级列表16并修改优先级列表16，使得优先级列表16中所选择的介质的顺序是第一优先级，其他媒体的剩余命令依次下降。光盘再现装置1根据修改的优先级列表16的顺序对媒体进行媒体检查。

7. 发明授权

US07623435B2 Optical pickup device, and information recording and reproduction device 失效
标题翻译：光拾取装置和信息记录和再现装置
公开(公告)号：US07623435B2
公开(公告)日：2009-11-24
申请号：US11660540
申请日：2005-08-12
申请人： Naoharu Yanagawa , Fumihiko Sano
发明人： Naoharu Yanagawa , Fumihiko Sano
IPC分类号： G11B7/00
CPC分类号： G11B7/0045 , G11B7/09 , G11B7/0925 , G11B7/1275 , G11B7/1381
摘要： A sufficient S/N ratio in reproduction of an optical disk is achieved without complexing a circuit structure even if a data recording speed relative to the optical disk is increased. When data is recorded into an optical disk (DK), in an information recording and reproduction device (RP), both a first light beam and a second light beam are emitted at the same time. A sub-actuator section (20) is provided in addition to a main actuator (15) for correcting the displacement of light collecting spots caused by the displacement between the optical axis of the first beam and the optical axis of the second beam. Only the optical axis of the second light beam is adjusted by the sub-actuator section (20).
摘要翻译：即使相对于光盘的数据记录速度增加，也不会使电路结构复杂化，从而实现光盘再现时的足够的S / N比。当将数据记录到光盘（DK）中时，在信息记录和再现设备（RP）中，同时发射第一光束和第二光束。除了用于校正由第一光束的光轴和第二光束的光轴之间的位移引起的聚光点的位移的主致动器（15）之外，还设置有副致动器部分（20）。只有第二光束的光轴被副致动器部分（20）调节。

8. 发明授权

US07154831B2 Device and method for controlling tilt servo 失效
公开(公告)号：US07154831B2
公开(公告)日：2006-12-26
申请号：US11174478
申请日：2005-07-06
申请人： Naoharu Yanagawa , Masahiro Kato
发明人： Naoharu Yanagawa , Masahiro Kato
IPC分类号： G11B7/00
CPC分类号： G11B7/0956 , G11B7/0945 , G11B7/1369 , G11B2007/0006
摘要： A tilt servo control device of an apparatus for recording information on and reproducing information from an optical recording medium set in the apparatus, the apparatus comprising an optical system for leading a laser beam emitted from a light source to a recording surface of the optical recording medium and a laser beam reflected by the recording surface of the recording medium to a photo detector and a read signal generator for generating a read signal in accordance with an output signal of the photo detector. The tilt servo control device determines a type of the optical recording medium, generates a tilt drive signal so as to reduce a tilt angle at a position of the laser beam irradiating the recording surface and an optical axis of the laser beam by a method for generating a tilt drive signal corresponding to the recording medium type, and drives a tilt angle adjuster for adjusting the tilt angle in accordance with the tilt drive signal.

9. 发明授权

US07016285B2 Linking gap detecting device and method of optical recording medium 失效
标题翻译：链接间隙检测装置及光记录介质的方法
公开(公告)号：US07016285B2
公开(公告)日：2006-03-21
申请号：US10461871
申请日：2003-06-16
申请人： Naoharu Yanagawa , Masafumi Asada , Takakazu Sugiyama , Yuji Shimizu
发明人： Naoharu Yanagawa , Masafumi Asada , Takakazu Sugiyama , Yuji Shimizu
IPC分类号： G11B7/00
CPC分类号： G11B19/12
摘要： Linking gap detecting device and method in which a light beam is irradiated to an information recording track of an optical recording medium; a light detecting signal is generated by receiving reflected light of the light beam irradiated to the information recording track; a synchronous signal is detected from the light detecting signal; it is judged whether the existing interval of the synchronous signal lies outside a predetermined interval range or not; and the linking gap is detected on the basis of a result of the judgment.
摘要翻译：连接间隙检测装置和方法，其中光束照射到光学记录介质的信息记录轨道; 通过接收照射到信息记录轨道的光束的反射光来产生光检测信号; 从光检测信号检测同步信号; 判断同步信号的现有间隔是否在预定的间隔范围之外; 并且基于判断结果来检测连接间隙。

10. 发明申请

US20050270924A1 Device and method for controlling tilt servo 失效
标题翻译：用于控制倾斜伺服的装置和方法
公开(公告)号：US20050270924A1
公开(公告)日：2005-12-08
申请号：US11174478
申请日：2005-07-06
申请人： Naoharu Yanagawa , Masahiro Kato
发明人： Naoharu Yanagawa , Masahiro Kato
IPC分类号： G11B7/004 , G11B7/00 , G11B7/09 , G11B7/095 , G11B7/135
CPC分类号： G11B7/0956 , G11B7/0945 , G11B7/1369 , G11B2007/0006
摘要： A tilt servo control device of an apparatus for recording information on and reproducing information from an optical recording medium set in the apparatus, the apparatus comprising an optical system for leading a laser beam emitted from a light source to a recording surface of the optical recording medium and a laser beam reflected by the recording surface of the recording medium to a photo detector and a read signal generator for generating a read signal in accordance with an output signal of the photo detector. The tilt servo control device determines a type of the optical recording medium, generates a tilt drive signal so as to reduce a tilt angle at a position of the laser beam irradiating the recording surface and an optical axis of the laser beam by a method for generating a tilt drive signal corresponding to the recording medium type, and drives a tilt angle adjuster for adjusting the tilt angle in accordance with the tilt drive signal.
摘要翻译：一种用于从设备中设置的光记录介质上记录信息并从其再现信息的装置的倾斜伺服控制装置，该装置包括用于将从光源发射的激光束引导到光记录介质的记录表面的光学系统以及由记录介质的记录表面反射到光电检测器的激光束和用于根据光电检测器的输出信号产生读取信号的读取信号发生器。倾斜伺服控制装置确定光学记录介质的类型，产生倾斜驱动信号，以便减少激光束照射记录表面的位置处的倾斜角度和激光束的光轴。与记录介质类型对应的倾斜驱动信号，并且驱动用于根据倾斜驱动信号调整倾斜角度的倾斜角度调节器。

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