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    • 21. 发明申请
    • Multi-Instance Video Encoder
    • 多实例视频编码器
    • US20100111192A1
    • 2010-05-06
    • US12266155
    • 2008-11-06
    • Hans W. Graves
    • Hans W. Graves
    • H04N7/26
    • H04N21/4341H04N21/234H04N21/2368H04N21/241
    • A system and method are disclosed for providing improved processing of video data. A multi-instance encoding module receives combined video and audio input, which is then separated into a video and audio source streams. The video source stream is pre-processed and corresponding video encoder instances are initiated. The preprocessed video source stream is split into video data components, which are assigned to a corresponding encoder instance. Encoding operations are performed by each video encoder instance to generate video output components. The video output components are then assembled in a predetermined sequence to generate an encoded video output stream. Concurrently, the audio source stream is encoded with an audio encoder to generate an encoded audio output stream. The encoded video and audio output streams are combined to generate a combined encoded output stream, which is provided as combined video and audio output.
    • 公开了一种用于提供视频数据的改进处理的系统和方法。 多实例编码模块接收组合的视频和音频输入,然后将其分离成视频和音频源流。 视频源流被预处理,并且启动对应的视频编码器实例。 预处理的视频源流被分割成视频数据组件,分配给相应的编码器实例。 编码操作由每个视频编码器实例执行以产生视频输出组件。 然后以预定顺序组合视频输出组件以产生编码视频输出流。 同时,音频源流被用音频编码器编码以产生编码的音频输出流。 编码的视频和音频输出流被组合以产生组合的编码输出流,其被提供为组合的视频和音频输出。
    • 26. 发明授权
    • Efficient data transmissions based on a policy
    • 基于策略的高效数据传输
    • US07136935B2
    • 2006-11-14
    • US09887810
    • 2001-06-22
    • Sriram Rao
    • Sriram Rao
    • G06F15/16
    • H04L49/9073H04L29/06027H04L49/90H04L49/9057H04L65/4084H04L67/325H04L67/327H04L67/42H04L69/24H04N21/2187H04N21/23608H04N21/241
    • A method and apparatus for reducing performance overhead of a media server sending packetized audio/video data to an end-player or user is provided. The main sources of performance overhead associated with a media server transmitting packetized audio/video data are (1) copying data from the user space buffer to the kernel buffer and (2) context switching from user level to kernel level. There are several techniques that can be used to address overhead. One technique involves creating an aggregate packet, which includes a policy, at the user level and transmitting this aggregate packet from the user level to the OS level with a system call. A second technique involves manipulating packets based on a policy in the OS level rather than in the user level. The manipulation of packets may include redirecting packets or splitting packets.
    • 提供了一种用于降低向最终播放器或用户发送分组化音频/视频数据的媒体服务器的性能开销的方法和装置。 与媒体服务器传输分组音频/视频数据相关联的性能开销的主要来源是(1)将数据从用户空间缓冲区复制到内核缓冲区,以及(2)从用户级别到内核级别的上下文切换。 有几种可用于解决开销的技术。 一种技术涉及在用户级别创建包括策略的聚合分组,并且通过系统调用将该聚合分组从用户级别发送到OS级别。 第二种技术涉及基于OS级别而不是在用户级别的策略来操纵数据包。 分组的操纵可以包括重定向分组或分组。