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    • 37. 发明申请
    • Method for p-domain frame level bit allocation for effective rate control and enhanced video encoding quality
    • 用于有效速率控制和增强视频编码质量的p域帧级位分配方法
    • US20100111163A1
    • 2010-05-06
    • US12311372
    • 2007-09-28
    • Hua YangJill MacDonald Boyce
    • Hua YangJill MacDonald Boyce
    • H04N11/04
    • H04N19/192H04N19/115H04N19/147H04N19/149H04N19/15H04N19/154H04N19/172H04N19/177H04N19/61
    • A method is claimed for encoding a group of pictures at a target bit rate. A pre-analysis procedure (105) is performed for each frame in the group of pictures as to develop a series of parameters. A pre-processing procedure is then performed for a frame selected from said group of pictures (115), so that the parameters associated with the selected frame are updated while the parameters associated unencoded frames from the group of pictures remain the same. These two sets of parameters are then used to determine an allocated bit rate (125) for the frame such that when the frame is actually encoded, the allocated bit rate is reserved for the encoding operation. The allocated bit rate and the target bit rate for the group of pictures may be different, and the quantization level associated with the allocated bit rate may be different than the quantization level associated with the actual bit rate used to encode the frame.
    • 要求一种用于以目标比特率对一组图像进行编码的方法。 对图像组中的每个帧执行预分析过程(105)以形成一系列参数。 然后对从所述图像组(115)中选择的帧执行预处理过程,使得与所选择的帧相关联的参数被更新,同时来自所述图像组的未编码帧的参数保持不变。 然后使用这两组参数来确定用于该帧的分配的比特率(125),使得当该帧被实际编码时,分配的比特率被保留用于编码操作。 图像组的分配比特率和目标比特率可以不同,并且与分配的比特率相关联的量化级别可能不同于与用于编码帧的实际比特率相关联的量化级别。
    • 39. 发明申请
    • Lens actuation device, optical system and camera
    • 镜头致动装置,光学系统和相机
    • US20090290242A1
    • 2009-11-26
    • US12290543
    • 2008-10-30
    • Hua YangSio Kuan LamKwok Sing ChengKin Ming FanWing Ming Fan
    • Hua YangSio Kuan LamKwok Sing ChengKin Ming FanWing Ming Fan
    • G02B7/02
    • G02B7/08
    • A lens actuation device for an optical system includes a housing, a carrier at least partially installed in the housing, and a plurality of transducers arranged around the carrier in the housing. All the transducers are coupled with the mount, and at least one transducer includes at least one magnet and at least one coil. At least one transducer includes at least one yoke. All the transducers when powered on may generate independent or consistent movement to cause the mount to make linear movement, rotation, or both relative to the housing. An optical system adopting the lens actuation device and a camera using the same are also presented. The device of the present invention uses the transducers to drive the carrier, such that the lens set is driven to make linear movement, rotation, or both, thereby achieving the flexible manipulation of the lens.
    • 用于光学系统的透镜致动装置包括壳体,至少部分地安装在壳体中的托架以及围绕壳体中的托架布置的多个换能器。 所有传感器与安装座相连,至少一个传感器包括至少一个磁体和至少一个线圈。 至少一个换能器包括至少一个轭。 所有传感器上电时可能会产生独立或一致的运动,使安装座相对于外壳进行线性运动,旋转或两者。 还提出了采用透镜致动装置的光学系统和使用其的照相机。 本发明的装置使用换能器驱动载体,使得透镜组被驱动以进行线性运动,旋转或两者,从而实现透镜的灵活操作。