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1.发明申请OPTICAL DISC DRIVE AND METHOD OF CONTROLLING LASER LIGHT POWER IN OPTICAL DISC DRIVE 有权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
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。
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2.发明授权Optical disc drive and method of controlling laser light power in optical disc drive 有权光盘驱动器及光盘驱动器中激光功率的控制方法公开(公告)号：US08335142B2
公开(公告)日：2012-12-18
申请号：US13177713
申请日：2011-07-07
IPC分类号： G11B11/00
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。
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3.发明授权Optical disc drive and method of controlling power of laser light in recording to optical disc 失效光盘驱动器和控制激光在光盘记录中的功率的方法公开(公告)号：US08270276B2
公开(公告)日：2012-09-18
申请号：US13178557
申请日：2011-07-08
IPC分类号： G11B11/00
CPC分类号： G11B7/1263 , G11B7/0941
摘要： This invention provides accurate control of laser light power in a recording operation to achieve more stable recording operation. An optical disc drive in an embodiment of this invention monitors the power of laser light with a monitor diode and controls the laser light power based on the result of monitoring. The optical disc drive changes data transfer rate (recording frequency) depending on the disc radial position. The optical disc drive controls the gain of the monitor diode across the recording surface depending on the recording frequency. This control improves the accuracy in laser light power control to achieve stable recording operations by precise servo control.
摘要翻译： 本发明提供对记录操作中的激光功率的精确控制，以实现更稳定的记录操作。 本发明实施例中的光盘驱动器利用监视二极管监测激光的功率，并根据监视结果控制激光功率。 光盘驱动器根据盘的径向位置改变数据传送速率（记录频率）。 光盘驱动器根据记录频率控制监视二极管在记录表面上的增益。 该控制提高了激光功率控制的精度，通过精确的伺服控制实现稳定的记录操作。
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公开(公告)号：US08165006B2
公开(公告)日：2012-04-24
申请号：US12952534
申请日：2010-11-23
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。
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公开(公告)号：US20110205872A1
公开(公告)日：2011-08-25
申请号：US13034436
申请日：2011-02-24
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。
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公开(公告)号：US20110205871A1
公开(公告)日：2011-08-25
申请号：US13034456
申请日：2011-02-24
IPC分类号： G11B7/095
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。
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公开(公告)号：US08243576B2
公开(公告)日：2012-08-14
申请号：US12952435
申请日：2010-11-23
IPC分类号： G11B7/00
CPC分类号： G11B7/1263
摘要： To determine the optimum amplitude of high frequency signal for the loaded disc with a simple configuration to achieve stable playing performance, 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 amplitude of the high frequency signal to be superimposed on the drive signal for the light source; the optical disc device being configured to read data on an optical disc loaded therein by a signal outputted from the detector, wherein the controller determines the amplitude of the high frequency signal to be superimposed on the drive signal based on asymmetry of the signal outputted from the detector.
摘要翻译： 为了以简单的配置确定用于加载的盘的高频信号的最佳幅度以实现稳定的播放性能，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，用于控制要叠加在光源的驱动信号上的高频信号的幅度; 所述光盘装置被配置为通过从所述检测器输出的信号读取装载在其中的光盘上的数据，其中所述控制器基于从所述检测器输出的信号的不对称性来确定要叠加在所述驱动信号上的高频信号的幅度 探测器。
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公开(公告)号：US08605563B2
公开(公告)日：2013-12-10
申请号：US12960171
申请日：2010-12-03
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。
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公开(公告)号：US08259548B2
公开(公告)日：2012-09-04
申请号：US12952416
申请日：2010-11-23
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。
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公开(公告)号：US08189447B2
公开(公告)日：2012-05-29
申请号：US13034456
申请日：2011-02-24
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。
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