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11. 再颁专利

USRE41881E1 Re-writable optical disk having reference clock information permanently formed on the disk 有权
标题翻译：具有永久形成在盘上的参考时钟信息的可重写光盘
公开(公告)号：USRE41881E1
公开(公告)日：2010-10-26
申请号：US09997036
申请日：2001-11-27
申请人： Daniel Y. Abramovitch , David K. Towner
发明人： Daniel Y. Abramovitch , David K. Towner
IPC分类号： G11B27/24
CPC分类号： G11B27/3027 , G11B7/0045 , G11B7/006 , G11B7/00736 , G11B7/24082 , G11B20/10009 , G11B20/10222 , G11B20/1217 , G11B20/1403 , G11B27/24 , G11B2020/1232 , G11B2020/1239 , G11B2020/1281 , G11B2020/1287 , G11B2220/216 , G11B2220/2562
摘要： An optical disk structure and optical disk recorder which enables data to be rewritten onto the recording layer of the optical disk. A clock reference structure is permanently formed along servo tracks of the optical disk. An optical transducer is coupled to the clock reference structure and generates a clock reference signal simultaneously with writing new data onto the recording layer of the optical disk. The data is written as data marks along the servo tracks. Each of the data marks includes edges. The edges of the data marks are recorded in synchronization with a write clock. The write clock is phase-locked with the clock reference signal. Therefore, the edges of the data marks are aligned with the clock reference structure with sub-bit accuracy. Standard DVD-ROM disk readers are not able to detect the high spatial frequency of the clock reference structure. Therefore, the optical disk structure and optical disk recorder of this invention allow production of re-writable optical disks which can be read by standard DVD-ROM disk readers.
摘要翻译：一种光盘结构和光盘记录器，其能够将数据重写到光盘的记录层上。时钟参考结构沿着光盘的伺服轨道永久地形成。光学传感器耦合到时钟参考结构，并且在将新数据写入光盘的记录层的同时产生时钟参考信号。数据沿伺服轨迹写入数据标记。每个数据标记包括边。数据标记的边缘与写时钟同步记录。写时钟与时钟参考信号锁相。因此，数据标记的边缘与子位精度与时钟参考结构对齐。标准DVD-ROM光盘读取器不能检测到时钟参考结构的高空间频率。因此，本发明的光盘结构和光盘记录器允许生产可由标准DVD-ROM盘读取器读取的可重写光盘。

12. 发明授权

US07460146B2 Dynamic correction of field curvature from a scanner 有权
标题翻译：从扫描仪动态校正场曲率
公开(公告)号：US07460146B2
公开(公告)日：2008-12-02
申请号：US10978078
申请日：2004-10-28
申请人： David K. Towner
发明人： David K. Towner
IPC分类号： B41J27/00 , B41J2/47 , B41J2/435
CPC分类号： G02B26/128 , G02B27/0031
摘要： Systems and methods are described that dynamically correct field curvature and other focus errors in imaging systems that use rotating scanners to scan an image field. The dynamic correction controls the focusing of an image field such that focus is maintained across the width of a photosensitive element as a rotating scanner scans the field. The described systems and methods enable the use of post-objective scanning configurations in which the complexity and expense of objective lenses is significantly reduced.
摘要翻译：描述了在使用旋转扫描器扫描图像场的成像系统中动态校正场曲率和其它焦点误差的系统和方法。动态校正控制图像场的聚焦，使得当旋转扫描仪扫描场时，在感光元件的宽度上保持聚焦。所描述的系统和方法使得能够使用物镜扫描配置，其中物镜的复杂性和费用显着降低。

13. 发明授权

US6046969A Multiple clock tracks for erasable and rewriteable optical disks 失效
标题翻译：用于可擦写可重写光盘的多个时钟轨
公开(公告)号：US6046969A
公开(公告)日：2000-04-04
申请号：US40142
申请日：1998-03-17
申请人： David K. Towner , Josh N. Hogan
发明人： David K. Towner , Josh N. Hogan
IPC分类号： G11B7/24 , G11B7/00 , G11B7/0037 , G11B7/0055 , G11B7/007 , G11B7/08 , G11B7/30 , G11B19/28 , G11B20/10 , G11B20/12
CPC分类号： G11B7/0037 , G11B7/007 , G11B7/00745 , G11B7/08
摘要： A system and method for generating a write clock for writing data along servo tracks of an erasable/rewriteable optical disk utilize clock patterns that correspond on a one-to-one basis to designated data zones on an optical disk. The clock patterns are located in one or more clock tracks and are dedicated to providing reference clock information. In one embodiment, an optical disk is divided radially into constant angular velocity (CAV) data zones and corresponding circular clock tracks are located near the outer edge of the disk. The circular clock tracks correspond on a one-to-one basis to the CAV data zones, and the unique clock patterns within the clock tracks are utilized to generate write clock signals. Clock information is read by a dedicated reference clock transducer and data is written to and read from a servo track of an optical disk by a read/write transducer. An optical disk drive equipped with the reference clock transducer and the read/write transducer also contains a clock circuit that receives reference clock signals and generates write clock signals. While generating write clock signals when data is written across CAV data zones, a first clock pattern is read to obtain a first write clock signal and a second clock pattern is read to obtain a second write clock signal. An optical disk and disk drive system in accordance with the invention are compatible with standard DVD-ROM formats.
摘要翻译：用于产生用于沿可擦除/可重写光盘的伺服轨迹写数据的写时钟的系统和方法利用一对一地对应于光盘上的指定数据区的时钟模式。时钟模式位于一个或多个时钟轨道中，专用于提供参考时钟信息。在一个实施例中，光盘被径向分成恒定的角速度（CAV）数据区，并且对应的圆形时钟轨道位于盘的外边缘附近。圆形时钟轨道在一对一的基础上对应于CAV数据区，并且利用时钟轨道内唯一的时钟模式来产生写入时钟信号。时钟信息由专用参考时钟传感器读取，并且数据通过读/写传感器写入光盘的伺服轨道并从其读取。配有参考时钟传感器和读/写换能器的光盘驱动器还包含接收参考时钟信号并产生写入时钟信号的时钟电路。当在CAV数据区中写入数据时产生写时钟信号，读取第一时钟模式以获得第一写时钟信号，并且读取第二时钟模式以获得第二写时钟信号。根据本发明的光盘和磁盘驱动器系统与标准DVD-ROM格式兼容。

14. 发明授权

US5432763A Subminiature rotary actuator optical head 失效
标题翻译：超小型旋转执行器光学头
公开(公告)号：US5432763A
公开(公告)日：1995-07-11
申请号：US325532
申请日：1994-10-18
申请人： David K. Campbell , Daniel R. Marshall , David K. Towner
发明人： David K. Campbell , Daniel R. Marshall , David K. Towner
IPC分类号： G11B7/085 , G11B7/09 , G11B7/12 , G11B11/105 , G11B7/00
CPC分类号： G11B11/10541 , G11B11/10569 , G11B11/10576 , G11B7/08576 , G11B7/09 , G11B7/093 , G11B7/0932 , G11B7/12
摘要： A miniature rotary actuator optical head assembly incorporating data and servo detecting elements mounted inside a source/detector module, which is located on the rotary actuator arm adjacent to the pivot point of the rotary actuator arm. The miniature rotary actuator optical head also includes a miniature focus motor which supports a fold mirror and an objective lens and repositions the fold mirror and objective lens simultaneously whenever a focus error is received. The focus motor can be actuated by a magnetic bias field that originates external to the rotary actuator arm, particularly the magnetic bias field generated for magneto-optical recordation. The optical assembly may also include two stage tracking by mounting the light source on a pair of lateral movement flexures and supplying a fine tracking error signal to actuate the movement of the light source.
摘要翻译：一种微型旋转致动器光学头组件，其包含安装在源/检测器模块内的数据和伺服检测元件，其位于与旋转致动器臂的枢转点相邻的旋转致动器臂上。微型旋转致动器光学头还包括微型聚焦马达，其支持折叠镜和物镜，并且每当接收到聚焦误差时也重新定位折叠镜和物镜。聚焦电机可以由位于旋转致动器臂的外部的磁偏置磁场来驱动，特别是用于磁光记录产生的磁偏置磁场。光学组件还可以包括通过将光源安装在一对横向运动弯曲上并提供精细跟踪误差信号来致动光源的运动的两级跟踪。

15. 发明授权

US4688201A Focusing and tracking apparatus for an optical data storage device 失效
标题翻译：用于光学数据存储设备的聚焦和跟踪装置
公开(公告)号：US4688201A
公开(公告)日：1987-08-18
申请号：US692278
申请日：1985-01-16
申请人： David K. Towner , David K. Campbell
发明人： David K. Towner , David K. Campbell
IPC分类号： G11B7/085 , G11B7/08 , G11B7/09 , G11B7/135 , G11B7/00
CPC分类号： G11B7/09 , G11B7/08
摘要： A two-stage beam positioning apparatus for use in an optical data storage device is provided. A fixed assembly includes a light beam source and detector, light beam focusing and track following apparatus. The fixed assembly is optically coupled to a movable assembly which provides coarse positioning of a focused light spot on a data storage medium such as an optical recording disc. The coarse positioning assembly is mechanically independent from the light beam source and detector assembly and, therefore, may be made very stiff and light resulting in a high bandwidth and reduced data access time. Since the light beam source and detector assembly and the focusing and track following control apparatus are mechanically isolated from the movable coarse positioning assembly, the size and mass of these components are not critical and do not affect data access time.
摘要翻译：提供了一种用于光学数据存储装置的两级光束定位装置。固定组件包括光束源和检测器，光束聚焦和跟踪跟踪装置。固定组件光学耦合到可移动组件，其提供聚焦光斑的粗略定位在诸如光学记录盘的数据存储介质上。粗定位组件在机械上独立于光束源和检测器组件，并且因此可以变得非常刚硬和光，导致高带宽和减少的数据访问时间。由于光束源和检测器组件以及聚焦跟踪跟随控制装置与可移动粗定位组件机械隔离，因此这些部件的尺寸和质量不是关键的，并且不影响数据访问时间。

16. 再颁专利

USRE45292E1 Re-writable optical disk having reference clock information permanently formed on the disk 有权
标题翻译：具有永久形成在盘上的参考时钟信息的可重写光盘
公开(公告)号：USRE45292E1
公开(公告)日：2014-12-16
申请号：US13622833
申请日：2012-09-19
申请人： Daniel Y. Abramovitch , David K. Towner
发明人： Daniel Y. Abramovitch , David K. Towner
IPC分类号： G11B7/00 , G11B7/24
CPC分类号： G11B20/10 , G11B27/24 , G11B2220/216 , G11B2220/2537
摘要： An optical disk structure and optical disk recorder which enables data to be rewritten onto the recording layer of the optical disk. A clock reference structure is permanently formed along servo tracks of the optical disk. An optical transducer is coupled to the clock reference structure and generates a clock reference signal simultaneously with writing new data onto the recording layer of the optical disk. The data is written as data marks along the servo tracks. Each of the data marks includes edges. The edges of the data marks are recorded in synchronization with a write clock. The write clock is phase-locked with the clock reference signal. Therefore, the edges of the data marks are aligned with the clock reference structure with sub-bit accuracy. Standard DVD-ROM disk readers are not able to detect the high spatial frequency of the clock reference structure. Therefore, the optical disk structure and optical disk recorder of this invention allow production of re-writable optical disks which can be read by standard DVD-ROM disk readers.
摘要翻译：一种光盘结构和光盘记录器，其能够将数据重写到光盘的记录层上。时钟参考结构沿着光盘的伺服轨道永久地形成。光学传感器耦合到时钟参考结构，并且在将新数据写入光盘的记录层的同时产生时钟参考信号。数据沿伺服轨迹写入数据标记。每个数据标记包括边。数据标记的边缘与写时钟同步记录。写时钟与时钟参考信号锁相。因此，数据标记的边缘与子位精度与时钟参考结构对齐。标准DVD-ROM光盘读取器不能检测到时钟参考结构的高空间频率。因此，本发明的光盘结构和光盘记录器允许生产可由标准DVD-ROM盘读取器读取的可重写光盘。

17. 发明授权

US06559878B2 System and method for fusing toner 失效
公开(公告)号：US06559878B2
公开(公告)日：2003-05-06
申请号：US09747049
申请日：2000-12-20
申请人： George V. McIlvaine , Laurent A. Regimbal , David K. Towner
发明人： George V. McIlvaine , Laurent A. Regimbal , David K. Towner
IPC分类号： B41J2435
CPC分类号： B41J2/471 , G03G15/2007
摘要： An apparatus and method are provided for fusing toner to a print medium. According to one embodiment, the apparatus includes a laser source optically coupled to a predefined position in a print medium pathway. A laser beam generated by the laser source is directed to fall upon the print medium shuttled along the print medium pathway. Finally, a laser controller is coupled to the laser source to control the laser beam to generate a predefined fusing exposure of the laser beam on the print medium.

18. 发明授权

US06536907B1 Aberration compensation in image projection displays 失效
标题翻译：图像投影显示中的像差补偿
公开(公告)号：US06536907B1
公开(公告)日：2003-03-25
申请号：US09499707
申请日：2000-02-08
申请人： David K. Towner , Mark Butterworth
发明人： David K. Towner , Mark Butterworth
IPC分类号： G03B2100
CPC分类号： H04N9/3185 , H04N5/335 , H04N5/74 , H04N9/28
摘要： Optical projection systems for the display of electronic images often suffer from degraded image quality due to color field registration errors caused by lateral chromatic aberration. Although most projection lenses are partially corrected for lateral chromatic aberration during the design process, the uncorrected residual aberration limits the imaging performance of many projection displays, especially when displaying text and graphics with single-pixel-wide features. Some embodiments of the invention correct color field registration errors due to lateral chromatic aberration in multiple-imager projection systems. Other embodiments of the invention correct radial distortion and keystone distortion in single-imager and multiple-imager projection displays. In some embodiments of the invention, the imager(s) pixel geometry is arranged to compensate for optical aberrations, which result from the optical system so as to achieve a corrected image.
摘要翻译：用于显示电子图像的光学投影系统常常由于由横向色差引起的色域注册误差而遭受劣化的图像质量。尽管在设计过程中大部分投影透镜被部分地校正为横向色差，但是未校正的残余像差限制了许多投影显示器的成像性能，特别是当以单像素宽的特征显示文本和图形时。本发明的一些实施例由于多成像仪投影系统中的横向色差而校正色域对准误差。本发明的其它实施例校正了单次成像器和多次成像器投影显示器中的径向失真和梯形失真。在本发明的一些实施例中，成像器像素几何形状被布置为补偿由光学系统产生的光学像差，以便实现校正图像。

19. 发明授权

US5929892A Beam deflecting for enhanced laser printer scanning 失效
标题翻译：光束偏转用于增强激光打印机扫描
公开(公告)号：US5929892A
公开(公告)日：1999-07-27
申请号：US703241
申请日：1996-08-26
申请人： David K. Towner , Daniel R. Marshall , Robert J. Lawton
发明人： David K. Towner , Daniel R. Marshall , Robert J. Lawton
IPC分类号： B41J2/44 , B41J2/47 , G02B26/10 , G02B26/12 , G06K15/12 , H04N1/04 , H04N1/113 , H04N1/12 , H04N1/191
CPC分类号： G06K15/1204 , B41J2/471 , G02B26/124 , H04N1/1135 , H04N1/12 , H04N1/1911 , H04N2201/0458
摘要： A system and method of providing a periodic trajectory scan path for a laser beam across a photoconductive surface in a laser printer. A preferred embodiment of the periodic trajectory for a system with a two-axis deflector includes a multiple-frequency omega wave trajectory for providing a substantially rectangular grid of available dot locations for selective laser beam pulsing. As such, a plurality of generally linear rows of dots are completed in a single scan pass of the laser beam across the surface. The periodic trajectory is provided by deflecting the laser beam with an optical beam deflector, such as an electro-optic deflector, placed between the laser and the rotating polygon scanning mirror. A preferred embodiment of the beam deflector includes a folded optical path.
摘要翻译：一种在激光打印机中通过光电导面提供用于激光束的周期性轨迹扫描路径的系统和方法。具有双轴偏转器的系统的周期性轨迹的优选实施例包括用于为选择性激光束脉冲提供可用点位置的基本矩形网格的多频ω波轨迹。这样，在激光束穿过表面的单次扫描遍中完成多个大致线性的点行。通过用放置在激光器和旋转多边形扫描镜之间的光束偏转器（例如电光偏转器）偏转激光束来提供周期轨迹。光束偏转器的优选实施例包括折叠光路。

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