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1. 发明授权

US07839729B2 Optical drive servo with a servo processor receiving photodetector signals 有权
标题翻译：伺服处理器接收光电检测器信号的光驱伺服
公开(公告)号：US07839729B2
公开(公告)日：2010-11-23
申请号：US11969190
申请日：2008-01-03
申请人： Ron J. Kadlec
发明人： Ron J. Kadlec
IPC分类号： G11B21/08
CPC分类号： G11B7/0941 , G11B7/08505 , G11B7/08529 , G11B7/08541 , G11B7/0901 , G11B7/0908 , G11B7/0917 , G11B7/094 , G11B7/0945 , G11B20/10046 , G11B20/18 , G11B27/105 , G11B27/3027
摘要： An optical disk drive is provided that includes: a plurality of photodetectors for receiving reflected light from an optical disk, each photodetector providing a photodetector output signal; an analog-to-digital converter for converting versions of the photodetector output signals into digital signals; and a digital signal processor configured to receive the digital signals, the digital signal processor being further configured to determine a focus error signal (FES) and a tracking error signal (TES) from the digital signals, the digital signal processor being further configured to process TES and FES through servo algorithms to produce tracking and focus control signals.
摘要翻译：提供了一种光盘驱动器，其包括：多个用于接收来自光盘的反射光的光电检测器，每个光电检测器提供光电检测器输出信号; 用于将光电检测器输出信号的形式转换为数字信号的模数转换器; 以及数字信号处理器，被配置为接收所述数字信号，所述数字信号处理器还被配置为从所述数字信号确定聚焦误差信号（FES）和跟踪误差信号（TES），所述数字信号处理器还被配置为处理 TES和FES通过伺服算法产生跟踪和聚焦控制信号。

2. 发明授权

US07593300B2 Digital tracking servo system with off-format detection 失效
标题翻译：数字跟踪伺服系统，具有离格式检测功能
公开(公告)号：US07593300B2
公开(公告)日：2009-09-22
申请号：US09950393
申请日：2001-09-10
申请人： Ron J. Kadlec , Christopher J. Turner
发明人： Ron J. Kadlec , Christopher J. Turner
IPC分类号： G11B7/00
CPC分类号： G11B7/0945 , G11B7/0946 , G11B7/0948
摘要： An off-format condition in a digital tracking servo is presented. An off-format condition can be detected by low pass filtering a tracking control signal, detecting a DC level over a threshold level, and indicating the off-format condition if the DC level is above the threshold level for a maximum number of cycles.
摘要翻译：提出了数字跟踪伺服中的非格式化条件。通过对跟踪控制信号进行低通滤波，检测超过阈值电平的DC电平，以及如果DC电平高于阈值电平以指示最大数量的周期，则可指示离格式条件。

3. 发明授权

US07522480B2 Digital tracking servo system with multi-track seek with an acceleration clamp 有权
公开(公告)号：US07522480B2
公开(公告)日：2009-04-21
申请号：US09950378
申请日：2001-09-10
申请人： Ron J. Kadlec
发明人： Ron J. Kadlec
IPC分类号： G11B21/08
CPC分类号： G11B7/0941 , G11B7/08505 , G11B7/08529 , G11B7/08541 , G11B7/0901 , G11B7/0908 , G11B7/0917 , G11B7/094 , G11B7/0945 , G11B20/10046 , G11B20/18 , G11B27/105 , G11B27/3027
摘要： A servo system with a multi-track seek algorithm with an acceleration clamp is presented. The multi-track seek algorithm detects zero crossings in a tracking error signal, counts the number of zero crossings to form a count, and calculates a reference velocity from the count. The algorithm also determines a time period between successive zero crossings, calculates a velocity from the time period, calculates a difference signal between the reference velocity and the velocity, and adjusts the control signal so that the velocity follows the reference velocity. The reference velocity can follow a velocity profile with acceleration portions, coasting portions, and deceleration portions which move an optical pick-up unit from a starting position to a target position. The acceleration of an optical pick-up unit is clamped during the multi-track seek operation.

4. 发明授权

US07368222B2 Optical data storage media with enhanced contrast 失效
标题翻译：具有增强对比度的光学数据存储介质
公开(公告)号：US07368222B2
公开(公告)日：2008-05-06
申请号：US09854333
申请日：2001-05-11
申请人： Brian S. Medower , Ian R. Redmond , David H. Davies
发明人： Brian S. Medower , Ian R. Redmond , David H. Davies
IPC分类号： G11B7/24
CPC分类号： G11B7/254 , G11B7/00452 , G11B7/24038 , G11B7/243 , G11B7/2531 , G11B7/2534 , G11B7/2542 , G11B7/257 , G11B7/2572 , G11B7/258 , G11B7/26 , G11B2007/24304 , G11B2007/2431 , G11B2007/24312 , G11B2007/24314 , G11B2007/25408 , G11B2007/2571 , G11B2007/25713 , G11B2007/25715 , G11B2220/216 , Y10S430/146
摘要： Disclosed is an optical data storage medium with enhanced contrast. The optical data storage medium includes a substrate having oppositely facing first and second surfaces. A first metal/alloy layer is formed overlaying the first surface of the substrate. The first metal/alloy layer is formed from tin, antimony and element selected from the group consisting of indium, germanium, aluminum, and zinc. After the first metal/alloy layer is formed, a first dielectric layer is formed overlaying the first metal/alloy layer. This dielectric layer is formed from silicon oxynitride. The first metal/alloy layer is positioned between the substrate and the first dielectric layer.
摘要翻译：公开了具有增强的对比度的光学数据存储介质。光学数据存储介质包括具有相对面对的第一和第二表面的基板。在衬底的第一表面上形成第一金属/合金层。第一金属/合金层由锡，锑和选自铟，锗，铝和锌的元素形成。在形成第一金属/合金层之后，形成覆盖第一金属/合金层的第一介电层。该介电层由氮氧化硅形成。第一金属/合金层位于基板和第一介电层之间。

5. 发明授权

US07116621B2 System and method for handling commands in an optical disc drive 有权
公开(公告)号：US07116621B2
公开(公告)日：2006-10-03
申请号：US09951931
申请日：2001-09-10
申请人： Christopher J. Turner , Michael B. Propps
发明人： Christopher J. Turner , Michael B. Propps
IPC分类号： G11B7/00
CPC分类号： G11B7/1356 , G11B7/08505 , G11B7/08523 , G11B7/08529 , G11B7/08541 , G11B7/08576 , G11B7/09 , G11B7/0901 , G11B7/0912 , G11B7/0938 , G11B7/094 , G11B7/0941 , G11B7/0943 , G11B7/0946 , G11B7/0948 , G11B7/0953 , G11B7/0956 , G11B7/123 , G11B7/131 , G11B19/28
摘要： An optical disc drive waits to receive a command to perform a function on optical media in the disc drive. The optical media includes a pitted premastered area that cannot be overwritten and a grooved user-writeable area that can be overwritten. Once a command is received, one portion of the disc drive processes the command while another portion of the disc drive monitors the processing of the command and waits until the command is processed. If an error condition is detected while processing the command, the disc drive generates an event request such as a notify event request, a focus event request, a spin event request, and a tracking event request. When an event issues, the disc drive interrupts processing of the command and attempts to recover from the error condition. The state of the disc drive when the requested event was received is saved before attempting to recover from the error condition. If the recovery attempt is successful, the saved state of the disc drive is restored, and the interrupted command continues to be processed at the point where the interruption occurred. A command finished event is issued when the command is complete. If the recovery attempt was not successful, the interrupted command is replaced with a servo abort command to terminate the interrupted command.

6. 发明授权

US07057983B2 System and method for controlling tracking and seeking in an optical disc drive 失效
公开(公告)号：US07057983B2
公开(公告)日：2006-06-06
申请号：US09951331
申请日：2001-09-10
申请人： Christopher J. Turner , Ron J. Kadlec , Charles R. Watt
发明人： Christopher J. Turner , Ron J. Kadlec , Charles R. Watt
IPC分类号： G11B7/00
CPC分类号： G11B7/1356 , G11B7/08505 , G11B7/08523 , G11B7/08529 , G11B7/08541 , G11B7/08576 , G11B7/09 , G11B7/0901 , G11B7/0912 , G11B7/0938 , G11B7/094 , G11B7/0941 , G11B7/0943 , G11B7/0946 , G11B7/0948 , G11B7/0953 , G11B7/0956 , G11B7/123 , G11B7/131 , G11B19/28
摘要： A control system for controlling tracking and seeking in an optical disc drive for optical media with a pitted premastered area that cannot be overwritten and a grooved user-writeable area that can be overwritten. The control system determines whether an optical pickup unit is over the premastered or the writeable areas of the optical media by measuring peak to peak amplitude of a tracking error signal. Gains and calibration values are selected based on whether an optical pickup unit is over the premastered or the writeable areas of the optical media. Reading from and writing to the optical media is disabled while jumping tracks. Control of jumping tracks on the optical media includes controlling: jumping a single track on the optical media; jumping a specified number of tracks every specified number of revolutions of the optical media; auto jumpbacks, and jumping in forward or reverse directions. Parameters for controlling jumps include at least one of: jump type, number of tracks to jump, time delay between track jumps, number of revolutions of the optical media between jumps, and whether it is not safe to read from or write to the optical media. The control system performs long seeks by predicting whether the tracking actuator arm will be positioned over the premastered area or the writeable area at the end of the long seek, and to load calibration parameters corresponding to the type of media over which the tracking actuator arm will be positioned at the end of the long seek.

7. 发明授权

US07023776B2 Calibration initiation methods for a tracking and focus servo system 失效
公开(公告)号：US07023776B2
公开(公告)日：2006-04-04
申请号：US09950541
申请日：2001-09-10
申请人： Ron J. Kadlec , Charles R. Watt , Christopher J. Turner , Hans B. Wach
发明人： Ron J. Kadlec , Charles R. Watt , Christopher J. Turner , Hans B. Wach
IPC分类号： G11B7/00
CPC分类号： G11B7/0945 , G11B2007/0006
摘要： A calibration method for an optical disk drive is presented. The operating parameters of an optical disk drive are initially calibrated when the disk drive is produced or during a repair step. The disk drive is then field calibrated during normal operation. Operating parameters can be field calibrated during power up. Further, operating parameters can be field calibrated when a new optical media is inserted into the optical disk drive. Additionally, operating parameters can be field calibrated during error recovery.

8. 发明授权

US07016280B2 Tracking and focus servo system with defect detection 失效
标题翻译：跟踪和聚焦具有缺陷检测的伺服系统
公开(公告)号：US07016280B2
公开(公告)日：2006-03-21
申请号：US09950379
申请日：2001-09-10
申请人： Ron J. Kadlec
发明人： Ron J. Kadlec
IPC分类号： G11B7/00
CPC分类号： G11B7/08576 , G11B7/0948 , G11B7/123
摘要： A defect detector in an optical disk drive is presented. The defect detector indicates a defect by monitoring a sum signal. The sum signal is calculated from optical signals from detectors in an optical pick-up unit of the optical disk drive. A defect can be indicated when a filtered sum signal, the filtered sum signal being the sum signal filtered with a high pass filter, is above a threshold value. In some embodiments, the defect detector can recognize changes in laser power or transitions between media types and not indicate defects during those occurrences.
摘要翻译：介绍了光盘驱动器中的缺陷检测器。缺陷检测器通过监视和信号来指示缺陷。总和信号由光盘驱动器的光学拾取单元中的检测器的光信号计算。当滤波后的和信号（滤波的和信号是用高通滤波器滤波的和信号）高于阈值时，可以指示缺陷。在一些实施例中，缺陷检测器可以识别激光功率的变化或介质类型之间的转换，并且在这些事件期间不指示缺陷。

9. 发明授权

US06965547B2 Tracking and focus servo system with error signal inverse non-linearity calibration 失效
标题翻译：跟踪和聚焦伺服系统，具有误差信号反向非线性校准
公开(公告)号：US06965547B2
公开(公告)日：2005-11-15
申请号：US09950409
申请日：2001-09-10
申请人： Ron J. Kadlec , Christopher J. Turner , Hans B. Wach
发明人： Ron J. Kadlec , Christopher J. Turner , Hans B. Wach
IPC分类号： G11B7/00 , G11B7/09 , G11B7/095
CPC分类号： G11B7/0945 , G11B7/094 , G11B7/0941
摘要： A digital servo system of an optical disk drive with a calibrated inverse non-linearity function is disclosed. A look-up table is determined, for example, with a focus error signal gain corresponding with a focus error signal offset so that the response of the focus servo system is substantially linear. Additionally, the look-up table can include tracking error signal gain, tracking error signal offset, or tracking loop gain parameters corresponding with the focus error signal offset.
摘要翻译：公开了具有校准的反向非线性函数的光盘驱动器的数字伺服系统。例如，利用与聚焦误差信号偏移相对应的聚焦误差信号增益来确定查找表，使得聚焦伺服系统的响应基本上是线性的。此外，查找表可以包括对应于聚焦误差信号偏移的跟踪误差信号增益，跟踪误差信号偏移或跟踪环路增益参数。

10. 发明授权

US06914724B2 Micro lens and method and apparatus for fabricating 失效
标题翻译：微透镜及其制造方法和装置
公开(公告)号：US06914724B2
公开(公告)日：2005-07-05
申请号：US10278719
申请日：2002-10-22
申请人： Ian R. Redmond
发明人： Ian R. Redmond
IPC分类号： G02B3/00 , G11B7/135 , G11B7/22 , G02B27/10 , B29D11/00
CPC分类号： G11B7/1353 , G02B3/00 , G11B7/1374 , G11B7/13922 , G11B7/22
摘要： Micro lenses are fabricated using processes which operate on multiple lenses at a time. In one embodiment, wafer-scale processing includes employing photolithography for defining gray-scale masks which permit relatively smooth or continuous curvatures of lens surfaces to be formed by, e.g., reactive ion etching. Processes and materials are used which achieve desired etching at a sufficiently rapid rate such as etching to a depth of about 200 micrometers in less than about 10 hours. Wafer-scale molding processes can also be used. Diffractive features can be formed on or adjacent lens surfaces to provide functions such as dispersion correction. Also, sub-wavelength scale features may be etched to provide quarter-wave plate functionality, birefringence, anti-reflective functions and the like. Structures such as mounting rings and/or crash stops can be formed integrally with the lens body, eliminating the need to glue or otherwise couple separate components.
摘要翻译：微透镜使用一次在多个透镜上操作的工艺来制造。在一个实施例中，晶片级处理包括采用光刻法定义灰度掩模，其允许通过例如反应离子蚀刻形成透镜表面的相对平滑或连续的曲率。使用以足够快的速率实现期望的蚀刻的工艺和材料，例如在小于约10小时内蚀刻到约200微米的深度。也可以使用晶片级成型工艺。衍射特征可以形成在透镜表面上或附近，以提供诸如色散校正的功能。此外，亚波长尺度特征可以被蚀刻以提供四分之一波片的功能，双折射，抗反射功能等。诸如安装环和/或碰撞止挡件的结构可以与镜体整体形成，从而不需要胶合或以其它方式耦合分开的部件。

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