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    • 2. 发明授权
    • Alignment-free solid laser apparatus
    • 无对准固体激光装置
    • US06526088B1
    • 2003-02-25
    • US09582861
    • 2000-07-06
    • Yong ChengHuisheng WangZhihuai WangXiaobing WangLiangqing HanJiangbai Zhang
    • Yong ChengHuisheng WangZhihuai WangXiaobing WangLiangqing HanJiangbai Zhang
    • H01S308
    • H01S3/08H01S3/08059
    • The alignment-free solid laser of the invention is characterized in that, an orientation prism having three inner surfaces perpendicular to one another, a bottom of equilateral triangle or circle shape, a corner apex located on the axis of the active material is located in front of one end of the active material and is used as a total reflective mirror of the resonant cavity, the other end of the active material is coated with a transitive-reflective film and is used as an output mirror, such that a laser resonant cavity is formed. This alignment-free solid laser has a simple structure, strong ability of misalignment-resistance, high stability, improved beam quality and reduced damage. Besides, it is easy to be operated and is easy to be standardized and modularized. It can be extensively used in military, industrial processing, medical and scientific research fields.
    • 本发明的无定线固体激光器的特征在于,具有三个彼此垂直的内表面的定向棱镜,等边三角形或圆形的底部,位于活性材料的轴线上的角顶点位于前面 并且用作谐振腔的全反射镜,活性材料的另一端涂覆有传递反射膜,并且用作输出反射镜,使得激光谐振腔是 形成。 该无对准固体激光器具有结构简单,对准电阻能力强,稳定性高,光束质量改善,损伤小等优点。 此外,易于操作,易于标准化和模块化。 可广泛应用于军工,医药,科研等领域。
    • 3. 发明授权
    • Content-based adaptive video transcoding framework
    • 基于内容的自适应视频转码框架
    • US08767825B1
    • 2014-07-01
    • US12627713
    • 2009-11-30
    • Huisheng WangXiaoquan YiVijnan Shastri
    • Huisheng WangXiaoquan YiVijnan Shastri
    • H04N7/18
    • H04N19/40H04N19/115H04N19/124H04N19/137H04N19/14H04N19/149H04N19/172H04N19/19
    • A system and method provide a video coding system for adaptively transcoding videos based on video coding complexity (VCC). A VCC engine of the system is configured to generate a measure of how difficult to encode a source video based on a trained VCC model. A video rate-distortion modeling engine of the system is configured to estimate a rate-distortion model and a scaling model. The VCC model, rate-distortion model and the scaling model are trained on a video corpus of the system. The trained VCC model, rate-distortion model and the scaling model are used by an adaptive bitrate transcoding sub-system to transcode a source video with an optimized bitrate and visual quality. The trained VCC model, rate-distortion model and the scaling model are further used by an adaptive resolution transcoding sub-system to transcode a source video with an optimized resolution and visual quality.
    • 一种系统和方法提供一种视频编码系统,用于基于视频编码复杂度(VCC)自适应地对视频进行代码转换。 该系统的VCC引擎被配置为产生基于经过训练的VCC模型对源视频进行编码困难的度量。 系统的视频速率失真建模引擎被配置为估计速率失真模型和缩放模型。 在系统的视频语料库上训练VCC模型,速率失真模型和缩放模型。 经过训练的VCC模型,速率失真模型和缩放模型由自适应比特率转码子系统用于以优化的比特率和视觉质量对源视频进行代码转换。 经过训练的VCC模型,速率失真模型和缩放模型进一步由自适应分辨率转码子系统用于以优化的分辨率和视觉质量对源视频进行转码。
    • 4. 发明授权
    • Adaptive audio transcoding
    • 自适应音频转码
    • US08521541B2
    • 2013-08-27
    • US12917688
    • 2010-11-02
    • Xiaoquan YiHuisheng WangVijnan Shastri
    • Xiaoquan YiHuisheng WangVijnan Shastri
    • G10L19/02
    • G10L19/173G10L25/81
    • A system and method provide an audio/video coding system for adaptively transcoding audio streams based on content characteristics of the audio streams. An audio stream metadata extraction module of the system is configured to extract metadata of a source audio stream. An audio stream classification module of the system is configured to classify the source audio stream into one of the several audio content categories based on the metadata of the source audio stream. An adaptive audio encoder of the system is configured to determine one or more transcoding parameters including target bitrate and sampling rate based on the metadata and classification of the source audio stream. An adaptive audio transcoder of the system is configured to transcode the source audio stream into an output audio stream using the transcoding parameters.
    • 一种系统和方法提供了一种音频/视频编码系统,用于基于音频流的内容特征来自适应地对音频流进行转码。 系统的音频流元数据提取模块被配置为提取源音频流的元数据。 系统的音频流分类模块被配置为基于源音频流的元数据将源音频流分类成多个音频内容类别中的一个。 系统的自适应音频编码器被配置为基于源音频流的元数据和分类来确定包括目标比特率和采样率的一个或多个代码转换参数。 该系统的自适应音频代码转换器被配置为使用代码转换参数将源音频流转码为输出音频流。