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    • 6. 发明申请
    • SOLID-STATE LASERS EMPLOYING INCOHERENT MONOCHROMATIC PUMP
    • 使用不饱和单色泵的固体激光器
    • WO2006085886A1
    • 2006-08-17
    • PCT/US2005/007809
    • 2005-03-11
    • PAVILION INTEGRATION CORPORATION
    • LUO, NingyiZHU, Sheng-BaiLU, ShaopingZHOU, Feng
    • H01S3/0933H01S3/042
    • H01S3/042H01S3/025H01S3/0407H01S3/0933H01S3/1625H01S3/1636
    • Solid-state laser(s) pumped by incoherent, monochromatic light from sources such as LED arrays and integrating technologies such as high power LED arrays and solid-state laser materials in conjunction with efficient and uniform absorption of pumping energies through a diffusing pump chamber. The resulting laser(s) are compact, robust, low-cost, and able to produce high power output for practical applications. It may efficiently operate over wide temperature and performance ranges, at CW or pulse modes, even with ultra short pulse width and/or extremely high repetition rates. Our inventive structure(s) is/are highly flexible and applicable to a large group of lasing media including those with very short upper state life times. Advantageously, they may be applied to a plethora of laser systems at wavelengths that have important applications and unavailable to other direct pumping technologies.
    • 通过来自诸如LED阵列的源的非相干单色光以及诸如大功率LED阵列和固态激光材料的集成技术泵浦的固体激光器结合通过扩散泵室的有效和均匀的泵浦能量吸收。 所产生的激光器是紧凑的,坚固的,低成本的,并且能够为实际应用产生高功率输出。 即使在超短脉冲宽度和/或极高的重复率下,它也可以在CW或脉冲模式下在宽温度和性能范围内高效运行。 我们的创造性结构非常灵活,适用于大量的激光介质,包括具有非常短的上限寿命的激光介质。 有利地,它们可以应用于具有重要应用的波长的大量激光系统,并且对于其它直接泵送技术不可用。
    • 8. 发明申请
    • INTERFEROMETRIC OPERATION OF ELECTROABSORPTION MODULATORS
    • 电子调制器的干涉运算
    • WO2008036313A1
    • 2008-03-27
    • PCT/US2007/020299
    • 2007-09-19
    • LUCENT TECHNOLOGIES INC.KANG, Inuk
    • KANG, Inuk
    • G02F1/025G02F1/21H04B10/155
    • G02F1/025G02F1/2255G02F2001/0155G02F2001/212
    • Methods and apparatus are described for modulating an optical signal using electroabsorption in conjunction with an optical interferometer. Phase-shift keying modulation can be achieved with lower amplitude modulator drive signals than conventional methods by splitting the signal to be modulated into multiple optical modes and interferometrically combining the modes after modulating at least one of the modes with an EAM. Using the present invention, the extinction ratio performance of ASK can be significantly improved for a given drive voltage or a desired extinction ratio can be achieved with a substantially lower drive voltage. Hence, the elecro-optic bandwidth of EAMs can be enhanced by overcoming the trade-off relationship between extinction ratio and bandwidth. Furthermore, the present invention can be used to generate other modulation formats, such as QPSK or QAM, with much lower drive voltages, thereby reducing the cost and power consum tion of the hi h-s eed drive electronics for the modulation.
    • 描述了使用电吸收结合光学干涉仪来调制光学信号的方法和装置。 通过将调制信号分割成多个光模式,并且通过EAM对至少一个模式进行调制后的干涉式组合,可以通过比常规方法更低幅度的调制器驱动信号来实现相移键控调制。 使用本发明,对于给定的驱动电压,ASK的消光比性能可以显着提高,或者可以用较低的驱动电压实现所需的消光比。 因此,通过克服消光比和带宽之间的权衡关系,可以提高EAM的电光带宽。 此外,本发明可以用于产生具有低得​​多的驱动电压的其他调制格式,例如QPSK或QAM,从而降低用于调制的高速驱动电路的成本和功耗。
    • 9. 发明申请
    • VIDEO FOREGROUND SEGMENTATION METHOD
    • 视频前缀分割方法
    • WO2007050707A2
    • 2007-05-03
    • PCT/US2006/041672
    • 2006-10-26
    • NEC LABORATORIES AMERICA, INC.
    • HAN, MeiXU, WeiGONG, Yihong
    • G06K9/34
    • G06K9/38G06T7/12G06T7/181G06T7/194G06T7/215G06T7/277G06T2207/10016H04N7/141
    • A fully automatic, computationally efficient segmentation method of video employing sequential clustering of sparse image features. Both edge and corner features of a video scene are employed to capture an outline of foreground objects and the feature clustering is built on motion models which work on any type of object and moving/static camera in which two motion layers are assumed due to camera and/or foreground and the depth difference between the foreground and background. Sequential linear regression is applied to the sequences and the instantaneous replacements of image features in order to compute affine motion parameters for foreground and background layers and consider temporal smoothness simultaneously. The Foreground layer is then extracted based upon sparse feature clustering which is time efficient and refined incrementally using Kalman filtering.
    • 一种使用稀疏图像特征的顺序聚类的全自动,计算效率高的视频分割方法。 使用视频场景的边缘和角落特征来捕获前景对象的轮廓,并且特征聚类建立在对任何类型的对象和移动/静态相机工作的运动模型上,其中由于相机而假设两个运动层, /或前景和前景和背景之间的深度差。 序列线性回归应用于图像特征的序列和瞬时替换,以便计算前景和背景层的仿射运动参数,同时考虑时间平滑度。 然后基于稀疏特征聚类提取前景层,这是使用卡尔曼滤波进行时间有效和精确地提取的。