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1.发明授权公开(公告)号：US08520480B2
公开(公告)日：2013-08-27
申请号：US12437122
申请日：2009-05-07
IPC分类号： G11B7/00
CPC分类号： G11B7/0912 , G11B7/0945
摘要： An optical disc apparatus includes an optical pickup for outputting an output signal according to reflected light from an optical disc medium, measures a level of a reflected signal corresponding to reflected light from a medium surface prior to reading of information recorded on the medium, predicts, based on the measured level of the reflected signal, whether or not the reflected signal from the medium surface will satisfy a predetermined detection condition when a focus state is to be detected, and uses a result of the predicting to detect a state where the output signal satisfies the predetermined detection condition as a state where a focus of an objective lens included in the optical pickup is on a signal surface of the medium while relatively moving the objective lens with respect to the medium surface when the information recorded on the medium is to be read therefrom.
摘要翻译： 光盘装置包括用于根据来自光盘介质的反射光输出输出信号的光学拾取器，在读取记录在介质上的信息之前，测量与来自介质表面的反射光相对应的反射信号的电平， 基于反射信号的测量电平，当要检测到聚焦状态时来自介质表面的反射信号是否将满足预定的检测条件，并且使用预测结果来检测输出信号 满足预定的检测条件，作为包含在光学拾取器中的物镜的焦点位于介质的信号表面上的状态，同时当记录在介质上的信息将成为相对于介质表面移动物镜时 从中读出。
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2.发明申请公开(公告)号：US20090290479A1
公开(公告)日：2009-11-26
申请号：US12468987
申请日：2009-05-20
IPC分类号： G11B7/135
CPC分类号： G11B7/08511 , G11B7/0945 , G11B2007/0013
摘要： An optical disc apparatus includes an optical pickup for outputting an output signal according to reflected light from an optical disc medium and a comparison signal output unit for outputting a comparison signal indicating whether a level of the output signal is higher than a threshold value, relatively moves an objective lens with respect to a surface of the medium within a predetermined range to measure a maximum level of the output signal, sets a value determined according to the maximum level as a threshold value used by the comparison signal output unit, and measures a level of a reflected signal corresponding to reflected light from each of a plurality of signal surfaces based on the output signal in a time period in which the comparison signal indicates that the level of the output signal is higher than the set threshold value, while moving the objective lens.
摘要翻译： 光盘装置包括：光拾取器，用于根据来自光盘介质的反射光输出输出信号;以及比较信号输出单元，用于输出指示输出信号的电平是否高于阈值的比较信号，相对移动 相对于在预定范围内的介质的表面的物镜，以测量输出信号的最大电平，将根据最大电平确定的值设置为由比较信号输出单元使用的阈值，并且测量电平 在比较信号表示输出信号的电平高于设定的阈值的时间段中，基于输出信号对应于来自多个信号表面中的每一个的反射光的反射信号，同时移动目标 镜片。
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3.发明申请公开(公告)号：US20090290466A1
公开(公告)日：2009-11-26
申请号：US12437122
申请日：2009-05-07
IPC分类号： G11B27/36
CPC分类号： G11B7/0912 , G11B7/0945
摘要： An optical disc apparatus includes an optical pickup for outputting an output signal according to reflected light from an optical disc medium, measures a level of a reflected signal corresponding to reflected light from a medium surface prior to reading of information recorded on the medium, predicts, based on the measured level of the reflected signal, whether or not the reflected signal from the medium surface will satisfy a predetermined detection condition when a focus state is to be detected, and uses a result of the predicting to detect a state where the output signal satisfies the predetermined detection condition as a state where a focus of an objective lens included in the optical pickup is on a signal surface of the medium while relatively moving the objective lens with respect to the medium surface when the information recorded on the medium is to be read therefrom.
摘要翻译： 光盘装置包括用于根据来自光盘介质的反射光输出输出信号的光学拾取器，在读取记录在介质上的信息之前，测量与来自介质表面的反射光相对应的反射信号的电平， 基于反射信号的测量电平，当要检测到聚焦状态时来自介质表面的反射信号是否将满足预定的检测条件，并且使用预测结果来检测输出信号 满足预定的检测条件，作为包含在光学拾取器中的物镜的焦点位于介质的信号表面上的状态，同时当记录在介质上的信息将成为相对于介质表面移动物镜时 从中读出。
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公开(公告)号：US07230896B2
公开(公告)日：2007-06-12
申请号：US10659751
申请日：2003-09-10
IPC分类号： G11B7/00
CPC分类号： G11B27/22 , G11B7/08517 , G11B7/0948 , G11B7/0953
摘要： A bottom hold circuit generates a bottom hold signal (BH signal) from an RFDC signal from an RF amplifier, and sends it to a comparator. The comparator compares a reference level and the BH signal, and generates an Rfdet signal having H level if the BH signal was found to be lower than the reference level. The Rfdet signal is a signal having H level when a laser spot falls in a data-recorded area on an optical disk, and having L level when in a non-recorded area. When it was detected that Rfdet signal had H level throughout a single turn of the disk, a servo-processing microcomputer controls an optical pickup so as to apply tracking servo. This makes it possible to precisely detect a boundary position between the data-recorded area and non-recorded area. If the optical disk is decentered, the boundary area corresponded to the amount of decentering can successfully be isolated from the data-recorded area.
摘要翻译： 底部保持电路从RF放大器的RFDC信号产生底部保持信号（BH信号），并将其发送到比较器。 比较器比较参考电平和BH信号，并且如果发现BH信号低于参考电平，则产生具有H电平的Rfdet信号。 当激光光斑落在光盘上的数据记录区域中时，Rfdet信号是具有H电平的信号，并且在非记录区域中具有L电平。 当在盘的一圈中检测到Rfdet信号具有H电平时，伺服处理微计算机控制光学拾取器以便施加跟踪伺服。 这使得可以精确地检测数据记录区域和非记录区域之间的边界位置。 如果光盘偏心，则对应于偏心量的边界区域可以成功地从数据记录区域隔离。
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5.发明授权Optical disk device with tracking adjustment and sled adjustment of optical pickup and method for controlling the device 有权具有光拾取器的跟踪调整和滑轨调整的光盘装置以及用于控制装置的方法公开(公告)号：US06826134B2
公开(公告)日：2004-11-30
申请号：US10044851
申请日：2001-11-07
申请人： Takashi Enokihara
发明人： Takashi Enokihara
IPC分类号： G11B709
CPC分类号： G11B7/08517 , G11B7/08505 , G11B7/08582 , G11B7/0953 , G11B7/0956
摘要： Optical disk device, in which tracking adjustment systems and a sled adjustment system are controlled independently, has offset value acquisition capability, which detects drive signals output from tracking adjustment systems and acquires tracking drive offset values. Such disk also has an offset value comparison capability, which compares the acquired tracking offset value and the offset center value in the state in which no tracking adjustment control is done, a search direction acquisition capability, which acquires the search direction of optical pickup from the control instruction that is output from the control system and sled drive decision capability, which decides whether to drive sled adjustment system based on the comparison result and the acquired search direction.
摘要翻译： 跟踪调整系统和滑轨调整系统独立控制的光盘装置具有偏移值采集能力，可检测跟踪调整系统输出的驱动信号，并获取跟踪驱动偏移值。 这样的磁盘还具有偏移值比较能力，其比较在没有进行跟踪调整控制的状态下所获取的跟踪偏移值和偏移中心值，搜索方向获取能力，其获取光拾取器的搜索方向 从控制系统输出的控制指令和滑轨驱动决策能力，决定是否根据比较结果和获取的搜索方向来驱动滑轨调整系统。
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6.发明授权公开(公告)号：US08144562B2
公开(公告)日：2012-03-27
申请号：US12468987
申请日：2009-05-20
IPC分类号： G11B7/00
CPC分类号： G11B7/08511 , G11B7/0945 , G11B2007/0013
摘要： An optical disc apparatus includes an optical pickup for outputting an output signal according to reflected light from an optical disc medium and a comparison signal output unit for outputting a comparison signal indicating whether a level of the output signal is higher than a threshold value, relatively moves an objective lens with respect to a surface of the medium within a predetermined range to measure a maximum level of the output signal, sets a value determined according to the maximum level as a threshold value used by the comparison signal output unit, and measures a level of a reflected signal corresponding to reflected light from each of a plurality of signal surfaces based on the output signal in a time period in which the comparison signal indicates that the level of the output signal is higher than the set threshold value, while moving the objective lens.
摘要翻译： 光盘装置包括：光拾取器，用于根据来自光盘介质的反射光输出输出信号;以及比较信号输出单元，用于输出指示输出信号的电平是否高于阈值的比较信号，相对移动 相对于在预定范围内的介质的表面的物镜，以测量输出信号的最大电平，将根据最大电平确定的值设置为由比较信号输出单元使用的阈值，并且测量电平 在比较信号表示输出信号的电平高于设定的阈值的时间段中，基于输出信号对应于来自多个信号表面中的每一个的反射光的反射信号，同时移动目标 镜片。
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公开(公告)号：US07016272B2
公开(公告)日：2006-03-21
申请号：US10044852
申请日：2001-11-07
申请人： Takashi Enokihara
发明人： Takashi Enokihara
IPC分类号： G11B7/00
CPC分类号： G11B7/0953 , G11B7/08505 , G11B7/08541 , G11B7/08582 , G11B7/0956
摘要： Optical disk device, in which a tracking adjustment system and sled adjustment system are controlled independently, has offset value acquisition capability, which detects the tracking drive signals output from tracking adjustment system for one lap around optical disk and acquires multiple tracking drive offset values. Such device also has offset representative value computation capability, which computes an offset representative value from multiple tracking drive offset values, as well as an offset value comparison capability, which compares the offset center value in the state in which no tracking adjustment control is done, and the offset representative value, as well as a sled drive decision means capability, which decides the drive of sled adjustment system 36 based on the comparison result.
摘要翻译： 跟踪调整系统和滑轨调整系统独立控制的光盘装置具有偏移值采集能力，其检测跟踪调整系统在光盘周围输出的跟踪驱动信号，并获取多个跟踪驱动偏移值。 这种装置还具有偏移代表值计算能力，其计算来自多个跟踪驱动偏移值的偏移代表值，以及偏移值比较能力，其比较在没有进行跟踪调整控制的状态下的偏移中心值， 以及偏移代表值以及滑轨驱动决定装置的能力，其基于比较结果来决定滑板调整系统36的驱动。
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