专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20120008477A1 OPTICAL DISC DRIVE AND METHOD OF CONTROLLING LASER LIGHT POWER IN OPTICAL DISC DRIVE 有权
标题翻译：光盘驱动器和控制激光光功率的方法在光盘驱动器中
公开(公告)号：US20120008477A1
公开(公告)日：2012-01-12
申请号：US13177713
申请日：2011-07-07
申请人： Hajime NISHIMURA , Shuichi Minamiguchi , Hiroharu Sakai , Kazuhiko Ono
发明人： Hajime NISHIMURA , Shuichi Minamiguchi , Hiroharu Sakai , Kazuhiko Ono
IPC分类号： G11B7/125
CPC分类号： G11B7/0941 , G11B7/1263
摘要： This invention provides an optical disc drive with more accurate and stable power control for a laser light source. An optical disc drive in an embodiment of this invention includes a monitor photodetector for receiving laser light emitted by a laser light source to monitor the laser light power. The monitor diode is a photodetector for generating an electric signal corresponding to the laser light power. A laser light controller controls drive current to the laser light source based on a result of measurement by the monitor diode. The optical disc drive measures output variations of the monitor diode and controls the gain of the monitor diode based on the result of the measurement. This gain control improves accuracy and stability in laser light control so that stability in recording/reading can be attained.
摘要翻译：本发明提供了一种对于激光光源具有更精确和稳定的功率控制的光盘驱动器。本发明实施例的光盘驱动器包括用于接收由激光光源发射的激光以监测激光功率的监视光电检测器。监视二极管是用于产生对应于激光功率的电信号的光电检测器。激光控制器基于监视二极管的测量结果控制对激光光源的驱动电流。光盘驱动器测量监视二极管的输出变化，并根据测量结果控制监视二极管的增益。该增益控制提高了激光控制的精度和稳定性，从而可以获得记录/读数的稳定性。

2. 发明申请

US20110205872A1 OPTICAL DISC DRIVE AND METHOD OF CONTROLLING THE SAME 审中-公开
标题翻译：光盘驱动器及其控制方法
公开(公告)号：US20110205872A1
公开(公告)日：2011-08-25
申请号：US13034436
申请日：2011-02-24
申请人： Hiroharu Sakai , Hajime Nishimura , Shuichi Minamiguchi
发明人： Hiroharu Sakai , Hajime Nishimura , Shuichi Minamiguchi
IPC分类号： G11B7/09
CPC分类号： G11B7/08511 , G11B2007/0013
摘要： An optical disc drive for reading or writing information on a multilayer optical disc having a plurality of recording layers by irradiating the disc with a light beam includes an optical pickup for irradiating the disc with the light beam, a focus error signal generator for generating a focus error signal that indicates a state of displacement of a focal point of the light beam from a recording layer based on reflection from the disc, a recording state detector for detecting a data recording state at a landing point of the focal point in a focus jump, a threshold setting unit for setting a threshold to be compared with the focus error signal based on the data recording state at the landing point, and a focus jump controller for controlling the focus jump based on a result of comparison of the focus error signal with the threshold.
摘要翻译：一种用于通过用光束照射盘而具有多个记录层的多层光盘上的信息读取或写入的光盘驱动器包括：用光照射光盘的光学拾取器，用于产生焦点的聚焦误差信号发生器误差信号，其基于来自盘的反射指示来自记录层的光束的焦点的位移状态;记录状态检测器，用于检测聚焦跳跃时焦点的着陆点处的数据记录状态，阈值设定单元，用于基于所述着陆点处的数据记录状态来设定与所述聚焦误差信号进行比较的阈值;以及聚焦跳跃控制器，用于基于聚焦误差信号与所述聚焦误差信号的比较结果来控制所述聚焦跳跃阈。

3. 发明授权

US08165006B2 Optical disc device and data reproduction method for the same 有权
标题翻译：光盘装置和数据再现方法相同
公开(公告)号：US08165006B2
公开(公告)日：2012-04-24
申请号：US12952534
申请日：2010-11-23
申请人： Shuichi Minamiguchi , Hajime Nishimura , Hiroharu Sakai
发明人： Shuichi Minamiguchi , Hajime Nishimura , Hiroharu Sakai
IPC分类号： G11B7/00
CPC分类号： G11B7/1263 , G11B7/005 , G11B2007/0013
摘要： Prevention of deletion of data in an unintended recording layer of an optical disc is ensured even when servo deviation occurs while controlling data reproduction. A light source outputs a light beam with light intensity according to a driving current on which a high frequency signal is superimposed. The light beam is collected on a recording layer of an optical disc. As triggered by detection of servo deviation during data reproduction, a light intensity controller adjusts a superimposed amount of the high frequency signal in the driving current to suit to a specific recording layer with the lowest reproduction tolerance in the optical disc and thereby controls the light intensity of the light beam output from the light source.
摘要翻译：即使在控制数据再现时发生伺服偏差，也能够确保在光盘的非预期记录层中删除数据。光源根据叠加有高频信号的驱动电流输出光强度的光束。光束被收集在光盘的记录层上。由于在数据再现期间由伺服偏差的检测触发，光强度控制器调整驱动电流中的高频信号的叠加量，以适应光盘中具有最低再现容限的特定记录层，从而控制光强度从光源输出的光束。

4. 发明授权

US07298679B2 Write power determining method and write power control method for optical disk drive 失效
标题翻译：写入光盘驱动器的电源决定方法和写功率控制方法
公开(公告)号：US07298679B2
公开(公告)日：2007-11-20
申请号：US10814704
申请日：2004-03-30
申请人： Hiroharu Sakai , Hiroyuki Hayashi , Takashi Matsuda
发明人： Hiroharu Sakai , Hiroyuki Hayashi , Takashi Matsuda
IPC分类号： G11B7/00
CPC分类号： G11B7/1267
摘要： A write power determining method for an optical disk drive determines optimum write power information of an optical disk during the high-speed rotation of the disk. A push-pull signal amplitude is obtained at two positions in a radial direction of an optical disk before writing. A linearization value of optimum write power associated with radial positions over the whole writing area of the disk is determined on the basis of the obtained push-pull signal amplitude. The determined result is adopted as optimum write power information associated with the radial positions of the disk.
摘要翻译：用于光盘驱动器的写入功率确定方法在盘的高速旋转期间确定光盘的最佳写入功率信息。在写入之前在光盘的径向的两个位置处获得推挽信号幅度。基于获得的推挽信号幅度来确定与盘的整个写入区域上的径向位置相关联的最佳写入功率的线性化值。所确定的结果被用作与盘的径向位置相关联的最佳写入功率信息。

5. 发明授权

US07206269B2 Optical disk recording/reproducing apparatus with reduced resume time 有权
标题翻译：具有缩短恢复时间的光盘记录/再现装置
公开(公告)号：US07206269B2
公开(公告)日：2007-04-17
申请号：US10626124
申请日：2003-07-23
申请人： Hiroharu Sakai , Kazuhiko Ono
发明人： Hiroharu Sakai , Kazuhiko Ono
IPC分类号： G11B7/00
CPC分类号： G11B7/0045 , G11B19/28
摘要： The present invention shortens a time to be elapsed from a recording interruption to a recording restart, thereby realizing a reliable recording restart. In one embodiment, an optical disk apparatus comprises an optical pickup and a processor, which includes a reproduction system circuit, a speed information detection circuit, and a position detection circuit. The reproduction system circuit is configured to generate a reproduction signal used in restarting recording of the optical disk after an interruption, based on the electrical signal from the optical pickup and setting values. The speed information detection circuit is configured to detect speed information before or after an interruption of a recording on the optical disk based on the electrical signal from the optical pickup. The position detection unit is configured to detect a recording restart position and a current position of the optical disk. An accessing unit is configured to control the optical pickup to access the optical disk at the recording restart position from the current position of the optical disk. A setting unit is configured to set in the reproduction system circuit setting values based on the detected speed information. The setting values are used by the reproduction system circuit to generate the reproduction signal.
摘要翻译：本发明缩短从记录中断到记录重启的时间，从而实现可靠的记录重新启动。在一个实施例中，光盘装置包括光拾取器和处理器，其包括再现系统电路，速度信息检测电路和位置检测电路。再现系统电路被配置为基于来自光学拾取器的电信号和设定值，产生在中断之后重新开始记录光盘所使用的再现信号。速度信息检测电路被配置为基于来自光学拾取器的电信号在光盘上的记录中断之前或之后检测速度信息。位置检测单元被配置为检测光盘的记录重新启动位置和当前位置。访问单元被配置为控制光学拾取器从光盘的当前位置在记录重新启动位置处访问光盘。设置单元被配置为基于检测到的速度信息来设置再现系统电路设置值。再现系统电路使用设定值来生成再现信号。

6. 发明申请

US20050094512A1 Write power determining method and write power control method for optical disk drive 失效
标题翻译：写入光盘驱动器的电源决定方法和写功率控制方法
公开(公告)号：US20050094512A1
公开(公告)日：2005-05-05
申请号：US10814704
申请日：2004-03-30
申请人： Hiroharu Sakai , Hiroyuki Hayashi , Takashi Matsuda
发明人： Hiroharu Sakai , Hiroyuki Hayashi , Takashi Matsuda
IPC分类号： G11B7/0045 , G11B7/00 , G11B7/125
CPC分类号： G11B7/1267
摘要： A write power determining method for an optical disk drive is provided which can determine optimum write power information of an optical disk during the high-speed rotation of the disk. The write power determining method comprises the steps of: obtaining push-pull signal amplitude at two positions in a radial direction of an optical disk before writing; on the basis of the obtained push-pull signal amplitude, determining a linearization value of optimum write power associated with radial positions over the whole writing area of the disk; and adopting the determined result as optimum write power information associated with the radial positions of the disk.
摘要翻译：提供一种用于光盘驱动器的写入功率确定方法，其可以在盘的高速旋转期间确定光盘的最佳写入功率信息。写入功率确定方法包括以下步骤：在写入之前在光盘的径向两个位置获得推挽信号幅度; 基于获得的推挽信号幅度，确定与盘的整个写入区域上的径向位置相关联的最佳写入功率的线性化值; 并将确定的结果作为与盘的径向位置相关联的最佳写入功率信息。

7. 发明授权

US08605563B2 Optical disc device and control method of optical disc 失效
标题翻译：光盘装置及光盘控制方法
公开(公告)号：US08605563B2
公开(公告)日：2013-12-10
申请号：US12960171
申请日：2010-12-03
申请人： Shuichi Minamiguchi , Hiroharu Sakai , Hajime Nishimura
发明人： Shuichi Minamiguchi , Hiroharu Sakai , Hajime Nishimura
IPC分类号： G11B7/00 , G11B20/18 , G11B7/20 , G11B3/70 , G11B17/00
CPC分类号： G11B7/005 , G11B7/00736 , G11B7/08511 , G11B7/126 , G11B2007/0013
摘要： An optical disc device comprising: a controller for reading data from an optical disc having a plurality of recording layers, wherein: the controller, in shifting a focus of the laser light from a first layer to a second layer, performs a first change that changes a setting on the high frequency signal to a predetermined value at which the high frequency signal is superimposed to suppress peak power of the drive signal if a light density of the second layer is higher than a light density of the first layer; the controller shifts the focus from the first layer to the second layer; and the controller, after the focus has been shifted, performs a second change that changes the setting on the high frequency signal to a predetermined value at which the high frequency signal is superimposed to increase the peak power of the drive signal.
摘要翻译：一种光盘装置，包括：控制器，用于从具有多个记录层的光盘读取数据，其中：所述控制器在将激光的焦点从第一层移动到第二层时，执行改变的第一改变如果所述第二层的光密度高于所述第一层的光密度，则将所述高频信号的设置设置为叠加所述高频信号的预定值，以抑制所述驱动信号的峰值功率; 控制器将焦点从第一层移动到第二层; 并且控制器在焦点移动之后执行将高频信号上的设置改变为叠加高频信号的预定值的第二改变，以增加驱动信号的峰值功率。

8. 发明授权

US08406100B2 Optical disc device and tracking servo control circuit therefor 失效
标题翻译：光盘装置及跟踪伺服控制电路
公开(公告)号：US08406100B2
公开(公告)日：2013-03-26
申请号：US13030281
申请日：2011-02-18
申请人： Hiroharu Sakai , Koji Kaniwa , Hajime Nishimura
发明人： Hiroharu Sakai , Koji Kaniwa , Hajime Nishimura
IPC分类号： G11B7/09
CPC分类号： G11B7/09
摘要： In an optical disc device, a way of canceling a lens shift due to an electric offset of an output of a tracking actuator driving circuit is desired. A tracking servo control circuit contains a first operation mode for setting an output current of the tracking actuator driving circuit to generally zero and a second operation mode for supplying a predetermined potential to the input. An average potential of a push-pull signal detected in the first operation mode is acquired. An object lens is moved by a predetermined amount in both radial directions by changing a potential supplied in the second mode to acquire correlative relationship between average potential of a push-pull signal relative to a lens movement amount and the supplied potential. An offset amount is acquired from the potential and the correlative relationship to cancel the offset.
摘要翻译：在光盘装置中，期望由于跟踪致动器驱动电路的输出的电偏移而抵消透镜偏移的方式。跟踪伺服控制电路包括用于将跟踪致动器驱动电路的输出电流设置为一般为零的第一操作模式和用于向输入提供预定电位的第二操作模式。获取在第一操作模式中检测到的推挽信号的平均电位。通过改变在第二模式中提供的电位，物镜在两个径向上移动预定量，以获得推挽信号相对于透镜移动量的平均电位与所提供的电位之间的相关关系。从电位和相关关系中获取偏移量，以消除偏移。

9. 发明授权

US08259548B2 Optical disc device and disc identification method 失效
标题翻译：光盘设备和光盘识别方法
公开(公告)号：US08259548B2
公开(公告)日：2012-09-04
申请号：US12952416
申请日：2010-11-23
申请人： Shuichi Minamiguchi , Hiroharu Sakai , Hajime Nishimura
发明人： Shuichi Minamiguchi , Hiroharu Sakai , Hajime Nishimura
IPC分类号： G11B7/00
CPC分类号： G11B19/12
摘要： To identify the type of a loaded disc, there is provided an optical disc device, comprising: a light source driven by a drive signal with a high frequency signal superimposed; a detector for detecting return light emitted from the light source; and a controller for controlling the amplitude of the high frequency signal to be superimposed on the drive signal, the optical disc device being configured to read data from an optical disc loaded therein by a signal outputted from the detector, wherein: the controller causes the light source to irradiate the loaded optical disc with light in a condition in which a high frequency signal different from a high frequency signal for data reading is superimposed on the drive signal; and the controller identifies a type of the loaded optical disc based on the return light from the loaded optical disc.
摘要翻译：为了识别装载的盘的类型，提供了一种光盘装置，包括：由具有叠加的高频信号的驱动信号驱动的光源; 用于检测从所述光源发射的返回光的检测器; 以及控制器，用于控制要重叠在驱动信号上的高频信号的幅度，该光盘装置被配置为通过从检测器输出的信号从装载在其中的光盘读取数据，其中：控制器使光源，用于在与用于数据读取的高频信号不同的高频信号叠加在驱动信号上的条件下用光照射装载的光盘; 并且控制器基于来自加载的光盘的返回光来识别加载的光盘的类型。

10. 发明授权

US08189447B2 Optical disc drive and method of controlling the same 失效
标题翻译：光盘驱动器及其控制方法
公开(公告)号：US08189447B2
公开(公告)日：2012-05-29
申请号：US13034456
申请日：2011-02-24
申请人： Hiroharu Sakai , Hajime Nishimura , Shuichi Minamiguchi
发明人： Hiroharu Sakai , Hajime Nishimura , Shuichi Minamiguchi
IPC分类号： G11B7/00
CPC分类号： G11B7/08511 , G11B2007/0013
摘要： An optical disc drive for reading or writing information on a multilayer optical disc having three or more recording layers by irradiating the disc with a light beam includes an optical pickup for irradiating the disc with the light beam, a recording state detector for detecting data recording states at a start point of a focus jump, a transit point or transit points on a recording layer or recording layers to be passed through, and an expected landing point of a focal point of the light beam in a focus jump, and a controller for moving the optical pickup to a position where the recording states are the same at all of the start point, the transit point(s) on the recording layer(s) to be passed through, and the expected landing point if the recording states are different among those points, before starting the focus jump.
摘要翻译：一种光盘驱动器，用于通过用光束照射光盘来在具有三个或更多个记录层的多层光盘上读取或写入信息，包括用光照射光盘的光学拾取器，用于检测数据记录状态的记录状态检测器在焦点跳跃的开始点，记录层上的过渡点或过境点或要通过的记录层，以及聚焦跳跃中的光束的焦点的预期着陆点，以及用于移动的控制器光拾取器到达记录状态在所有起始点上的记录状态相同的位置，要通过的记录层上的传送点以及如果记录状态不同的预期着陆点那些点，在开始焦点跳跃之前。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式