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    • 1. 发明授权
    • Aberration compensation in image projection displays
    • 图像投影显示中的像差补偿
    • US06536907B1
    • 2003-03-25
    • US09499707
    • 2000-02-08
    • David K. TownerMark Butterworth
    • David K. TownerMark Butterworth
    • G03B2100
    • H04N9/3185H04N5/335H04N5/74H04N9/28
    • 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.
    • 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。
    • 7. 再颁专利
    • Re-writable optical disk having reference clock information permanently formed on the disk
    • 具有永久形成在盘上的参考时钟信息的可重写光盘
    • USRE43788E1
    • 2012-11-06
    • US12725099
    • 2010-03-16
    • Daniel Y. AbramovitchDavid K. Towner
    • Daniel Y. AbramovitchDavid K. Towner
    • G11B7/00
    • G11B20/10G11B27/24G11B2220/216G11B2220/2537
    • An optical disk structure and optical disk recorder which enables data to be re-written 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.
    • 一种光盘结构和光盘记录器,其使得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。
    • 8. 发明授权
    • Re-writable optical disk having reference clock information permanently formed on the disk
    • 具有永久形成在盘上的参考时钟信息的可重写光盘
    • US07701836B2
    • 2010-04-20
    • US11416589
    • 2006-08-09
    • Daniel Y. AbramovitchDavid K. Towner
    • Daniel Y. AbramovitchDavid K. Towner
    • G11B7/24
    • G11B20/10G11B27/24G11B2220/216G11B2220/2537
    • An optical disk structure and optical disk recorder which enables data to be re-written 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.
    • 一种光盘结构和光盘记录器,其使得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。
    • 10. 再颁专利
    • Re-writable optical disk having reference clock information permanently formed on the disk
    • 具有永久形成在盘上的参考时钟信息的可重写光盘
    • USRE45292E1
    • 2014-12-16
    • US13622833
    • 2012-09-19
    • Daniel Y. AbramovitchDavid K. Towner
    • Daniel Y. AbramovitchDavid K. Towner
    • G11B7/00G11B7/24
    • G11B20/10G11B27/24G11B2220/216G11B2220/2537
    • 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.
    • 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。