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    • 7. 发明申请
    • Bit-rate reduction for multimedia data streams
    • 多媒体数据流的比特率降低
    • US20070058716A1
    • 2007-03-15
    • US11518298
    • 2006-09-08
    • David Blum
    • David Blum
    • H04N11/04H04B1/66
    • H04N19/583H04N19/115H04N19/124H04N19/146H04N19/15H04N19/154H04N19/194H04N19/523H04N19/533H04N19/61H04N19/63H04N19/80H04N19/85
    • Systems and methods for reducing a bit-rate in a multimedia data stream while maintaining high image quality. Two consecutive frames of the multimedia data stream are spatially filtered, temporally filtered, and combined into a pre-processed frame. In one embodiment, the two consecutive frames are consecutive fields of an interlaced data stream that are deinterlaced by the spatial and temporal filtering process. The pre-processed frame is encoded multiple times using different quantization values to produce a plurality of encoded frames. One of the encoded frames is selected based on its image quality and/or size for inclusion in an encoded data stream. In one embodiment, the pre-processed frame undergoes a motion estimation method that performs an integer level search of overlapping locations around a co-located macroblock in a reference frame followed by a sub-pixel level diamond pattern search.
    • 用于降低多媒体数据流中的比特率同时保持高图像质量的系统和方法。 多媒体数据流的两个连续帧被空间滤波,时间滤波,并组合成预处理帧。 在一个实施例中,两个连续帧是通过空间和时间滤波处理去隔行扫描的隔行数据流的连续字段。 使用不同的量化值对预处理的帧进行多次编码以产生多个编码帧。 基于其图像质量和/或尺寸来选择编码帧之一以包含在编码数据流中。 在一个实施例中,预处理帧经历运动估计方法,该方法对参考帧中的位于相邻位置的宏块周围的重叠位置执行整数级搜索,之后是子像素级菱形图案搜索。
    • 10. 发明申请
    • ADAPTIVE INTRAOCULAR LENS
    • 自适应眼科镜片
    • US20130245754A1
    • 2013-09-19
    • US13885366
    • 2011-11-14
    • Ronald David BlumRudy Mazzocchi
    • Ronald David BlumRudy Mazzocchi
    • A61F2/16
    • A61F2/1624A61F2/1613A61F2/1627A61F2/1635A61F2/1648A61F2210/008A61F2210/009
    • An implantable ophthalmic device with flexible, fluid-filled membranes provide dynamically variable optical power to restore lost accommodation in individuals suffering from presbyopia or aphakia without moving parts or reducing the amount of transmitted light. Actuating the device causes the fluid-filled membrane to change curvature, which produces a corresponding change in optical power. For instance, squeezing the edge of the membrane causes the center of the membrane to bulge by an amount proportional to the squeezing force. Alternatively, heating or applying a voltage to the membrane may cause the liquid in the membrane to undergo a phase transition accompanied by a corresponding change in volume that causes the membrane to inflate so as to change the optical power of the device.
    • 具有柔性流体填充膜的可植入眼科装置提供动态可变的光学功率,以恢复患有老花眼或无晶状体的个体的失去的适应性,而无需移动部件或减少透射光量。 驱动该装置导致流体填充的膜改变曲率,这产生相应的光功率变化。 例如,挤压膜的边缘导致膜的中心膨胀与挤压力成比例的量。 或者,加热或向膜施加电压可能导致膜中的液体经历伴随相应的体积变化的相变,导致膜膨胀以改变装置的光功率。