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1. 发明授权

US06252833B1 Optical head 失效
标题翻译：光头
公开(公告)号：US06252833B1
公开(公告)日：2001-06-26
申请号：US09480491
申请日：2000-01-11
申请人： Hiroyuki Yamasaki , Tomoko Miyaura
发明人： Hiroyuki Yamasaki , Tomoko Miyaura
IPC分类号： G11B713
CPC分类号： B82Y10/00 , G11B7/122 , G11B7/13
摘要： Near-field light is generated from a fine opening formed in a silicon substrate to thereby record information on a recording layer of a recording medium. When the information is read out, reflected light from the recording layer is detected by a photodiode. The photodiode is formed by providing a boron-implanted layer around the fine opening in the silicon substrate. The detection signal of the reflected light is derived from the electrode. By this photodiode, the reflected light for reading is efficiently detected.
摘要翻译：从形成在硅衬底中的精细开口产生近场光，从而将信息记录在记录介质的记录层上。当读出信息时，由光电二极管检测来自记录层的反射光。通过在硅衬底中的微细开口周围设置硼注入层来形成光电二极管。从电极导出反射光的检测信号。通过该光电二极管，有效地检测用于读取的反射光。

2. 发明授权

US06233210B1 Optical drive error tracking method and apparatus 有权
标题翻译：光驱误差跟踪方法及装置
公开(公告)号：US06233210B1
公开(公告)日：2001-05-15
申请号：US09169368
申请日：1998-10-09
申请人： David L. Schell
发明人： David L. Schell
IPC分类号： G11B713
CPC分类号： G11B7/0901
摘要： A method and apparatus provides an improved optical storage disk player. An improved method and apparatus for obtaining a tracking error signal for an optical disk player is disclosed which is general across the various data formats found in CD audio disks, CD-ROMs, and digital video disks. The present invention uses a photodetector with at least four active areas to sense the reflected laser beam. A differential amplitude tracking error signal is generated by comparing the signal strength in the different active areas.
摘要翻译：一种方法和装置提供一种改进的光存储盘播放器。公开了一种用于获得光盘播放器的跟踪误差信号的改进方法和装置，其通常在CD音频盘，CD-ROM和数字视频盘中发现的各种数据格式之间。本发明使用具有至少四个有源区域的光电检测器来感测反射的激光束。通过比较不同有效区域中的信号强度来产生差分幅度跟踪误差信号。

3. 发明授权

US06738330B2 Optical information reproducing and recording apparatus utilizing varying temperature setting ranges 失效
标题翻译：利用变化的温度设定范围的光学信息再现和记录装置
公开(公告)号：US06738330B2
公开(公告)日：2004-05-18
申请号：US09808031
申请日：2001-03-15
申请人： Yoji Shumura , Tomoko Miyagawa , Katsuaki Yamanoi
发明人： Yoji Shumura , Tomoko Miyagawa , Katsuaki Yamanoi
IPC分类号： G11B713
CPC分类号： G11B7/126 , G11B11/10595 , G11B19/04
摘要： A temperature inside the information reproducing and recording apparatus is always monitored and it is judged whether the temperatures is a proper operation start temperature, a stop temperature or a restart temperature or not. Based on this judgement, the start and the like of the reproducing and recording operation is properly controlled. Further, with respect to the reproducing and the recording of the information, their respective proper operation temperature ranges are set individually.
摘要翻译：始终监视信息再现和记录装置内部的温度，并且判断温度是否为适当的操作开始温度，停止温度或重启温度。基于该判断，适当地控制再现和记录操作的开始等。此外，关于信息的再现和记录，它们各自的适当操作温度范围被单独设置。

4. 发明授权

US06282164B1 Optical head having a phase-shifting diffraction grating 有权
$Optical head having a phase-shifting diffraction grating$
标题翻译：具有相移衍射光栅的光学头
公开(公告)号：US06282164B1
公开(公告)日：2001-08-28
申请号：US09177578
申请日：1998-10-23
申请人： Ryuichi Katayama
发明人： Ryuichi Katayama
IPC分类号： G11B713
CPC分类号： G11B7/1353 , G11B7/00718 , G11B7/0903 , G11B7/0912
摘要： An optical head having a phase-shifting diffraction grating includes a diffraction grating for dividing the light from a light source into a plus first order diffracted light, a zero order light, and a minus first order diffracted light. An objective lens focuses light from the light source passing through the diffraction grating onto an optical recording medium, and a photodetector receives a reflected light from the optical recording medium. A signal processing circuit generates a track error signal according to an output of the photodetector. The phase difference between lights on different regions of the diffraction grating is &pgr;/2 radians allowing the optical head to detect a land/groove position on an optical recording medium even if the land and groove have identical widths.
摘要翻译：具有相移衍射光栅的光学头包括用于将来自光源的光分成正一级衍射光，零级光和负一级衍射光的衍射光栅。物镜将来自穿过衍射光栅的光源的光聚焦到光学记录介质上，并且光电检测器接收来自光学记录介质的反射光。信号处理电路根据光检测器的输出产生轨道误差信号。衍射光栅的不同区域上的光的相位差为π/ 2弧度，即使光阑和凹槽具有相同的宽度，也允许光学头检测光学记录介质上的光阑/凹槽位置。

5. 发明授权

US06278670B1 Optical head apparatus 有权
标题翻译：光头设备
公开(公告)号：US06278670B1
公开(公告)日：2001-08-21
申请号：US09427826
申请日：1999-10-27
申请人： Hideki Hayashi , Tatsuo Ito , Yoshiaki Komma , Hiroaki Yamamoto , Seiji Nishino
发明人： Hideki Hayashi , Tatsuo Ito , Yoshiaki Komma , Hiroaki Yamamoto , Seiji Nishino
IPC分类号： G11B713
CPC分类号： G11B7/131 , G11B7/0912 , G11B7/0943 , G11B7/133 , G11B7/1353 , G11B2007/0006
摘要： In a photodetector, the minimum size of the photodetection area for detecting a focus error signal from a light beam on the inner radius side of a hologram is made smaller than the minimum diameter of diffracted light beam spots (30, 31) for recording and reproduction, and when a CD is reproduced, a light beam close to the optical axis is made to significantly contribute to the focus error signal and the minimum size of the photodetection area for detecting the focus error signal from a light beam from the peripheral side of the hologram is made larger than the minimum diameter of diffracted light beam spots (130, 131) for recording and reproduction, whereby the focus error signal is made equal to the normal focus error signal when a DVD is reproduced, so that the focus offset variation caused when the base material thickness varies can be reduced.
摘要翻译：在光电检测器中，将用于检测来自全息图的内半径侧上的光束的聚焦误差信号的光检测区域的最小尺寸设定为小于用于记录和再现的衍射光束点（30,31）的最小直径，并且当再现CD时，使靠近光轴的光束显着有助于聚焦误差信号和用于从来自所述光轴的外围侧的光束检测聚焦误差信号的光检测区域的最小尺寸使全息图大于用于记录和再现的衍射光束点（130,131）的最小直径，由此当再现DVD时使聚焦误差信号等于正常聚焦误差信号，使得聚焦偏移变化引起当基材厚度变化时可以减少。

6. 发明授权

US06353583B1 Signal operational circuit for a multi-beam pick-up device 失效
标题翻译：用于多光束拾取装置的信号操作电路
公开(公告)号：US06353583B1
公开(公告)日：2002-03-05
申请号：US09259258
申请日：1999-03-01
申请人： Ryuuji Kudoh , Tatsuaki Sakurai , Masaaki Sofue
发明人： Ryuuji Kudoh , Tatsuaki Sakurai , Masaaki Sofue
IPC分类号： G11B713
CPC分类号： G11B7/0943 , G11B7/005 , G11B7/08505 , G11B7/0901 , G11B7/0908 , G11B7/0941
摘要： The present invention provides a large scale integrated circuit (LSI) for calculating servo signals (e.g., a focusing signal, a tracking signal, etc.) from the output signals received from a plurality of photo detectors, as used within an optical disk apparatus. The invention provides a switching circuit and a gain changing circuit coupled to the LSI such that a single LSI may be used for at least two different photo detector configurations as may be found in at least two different pick-up devices.
摘要翻译：本发明提供一种用于从光盘装置中使用的从多个光电检测器接收的输出信号计算伺服信号（例如，聚焦信号，跟踪信号等）的大规模集成电路（LSI）。本发明提供一种耦合到LSI的开关电路和增益改变电路，使得单个LSI可以用于至少两种不同的光检测器配置，如在至少两个不同的拾取装置中可以找到的。

7. 发明授权

US06205094B1 Tracking system for optical storage media 失效
标题翻译：光存储介质跟踪系统
公开(公告)号：US06205094B1
公开(公告)日：2001-03-20
申请号：US09113208
申请日：1998-07-10
申请人： Klaas van Zalinge
发明人： Klaas van Zalinge
IPC分类号： G11B713
CPC分类号： G11B7/0943 , G11B7/0901
摘要： A tracking system for optical storage media e.g. an optical disk, comprising a matrix of four sensors receiving a beam reflected by the disk; one processing channel for each sensor signal, including means for producing a binary signal from the sensor signal, and an adjustable edge delay circuit operating on the binary signal; one adder for each pair of channels corresponding to diagonal sensors of the matrix; and a phase detector comparing the outputs of the adders.
摘要翻译：用于光学存储介质的跟踪系统光盘，包括四个传感器的矩阵，其接收由所述盘反射的光束; 每个传感器信号的一个处理通道，包括用于从传感器信号产生二进制信号的装置，以及对该二进制信号进行操作的可调边缘延迟电路; 对应于矩阵的对角线传感器的每对通道的一个加法器; 以及比较加法器的输出的相位检测器。

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