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    • 3. 发明申请
    • QUALITY-BASED VIDEO COMPRESSION
    • 基于质量的视频压缩
    • US20130077675A1
    • 2013-03-28
    • US13243241
    • 2011-09-23
    • Andrew D. RosenJohn Conrad
    • Andrew D. RosenJohn Conrad
    • H04N7/30H04N7/26
    • H04N19/0009H04N19/124H04N19/15H04N19/177
    • Various embodiments are disclosed herein that relate to quality-based video encoding. For example, one disclosed embodiment provides a video compression system configured to compress a video item at a constant average quality to form compressed video data. Further, the system is configured to compare a bit rate of each portion of a plurality of portions of the compressed video data to a threshold bit rate, and if a bit rate of a selected portion of the compressed video data meets or exceeds the threshold bit rate, then adjust a compression process variable while compressing a segment of the video item corresponding to the selected portion of the compressed video data to reduce the bit rate of the portion of the compressed video data.
    • 本文公开了涉及基于质量的视频编码的各种实施例。 例如,一个公开的实施例提供一种配置成以恒定的平均质量压缩视频项目以形成压缩视频数据的视频压缩系统。 此外,该系统被配置为将压缩视频数据的多个部分的每个部分的比特率与阈值比特率进行比较,并且如果压缩视频数据的所选部分的比特率满足或超过阈值比特 速率,然后在压缩与压缩视频数据的所选部分相对应的视频项目的片段的同时调整压缩处理变量,以降低压缩视频数据的该部分的比特率。
    • 5. 发明授权
    • High efficiency particulate air filter cabinet
    • 高效颗粒空气过滤柜
    • US4778496A
    • 1988-10-18
    • US120401
    • 1987-11-13
    • John Conrad
    • John Conrad
    • B01D46/00B01D46/10F24F1/04F24F3/16
    • F24F1/04B01D46/00B01D46/10F24F3/1603F24F2221/12
    • A multi-part cabinet enclosing a high efficiency particulate air filter and a blower for moving air therethrough positions the filter in a first part of the cabinet and sealingly connects it with a second part of the cabinet in which the blower and its motor are located. A third part of the cabinet encloses the first part and provides a screened access opening so that air to be filtered can enter the third part of the multi-part cabinet and flow therefrom through the high efficiency particulate air filter in the first part of the cabinet and from the filter into the second part of the cabinet and the blower therein, the second part of the cabinet being provided with a screened air exit, the first part of the multi-part cabinet being permanently sealingly attached to the second part of the multi-part cabinet. The interconnection of the first, second and third parts of the multi-part cabinet positively prevent air leaks which adversely affect the efficiency of the high efficiency particulate air filter.
    • 封闭高效颗粒空气过滤器的多部分机柜和用于移动空气的鼓风机将过滤器定位在机柜的第一部分中,并将其与鼓风机及其电机所在的机柜的第二部分密封连接。 机柜的第三部分包围第一部分,并提供一个屏蔽的进出口,使得被过滤的空气可以进入多部分机柜的第三部分,并通过机柜的第一部分的高效颗粒空气过滤器 并且从过滤器进入机壳的第二部分和其中的鼓风机,机壳的第二部分设置有屏蔽空气出口,多部分机柜的第一部分永久地密封地附接到多个部件的第二部分 - 机柜。 多部分机柜的第一部分,第二部分和第三部分的互连可以有效防止空气泄漏,从而对高效颗粒状空气过滤器的效率产生不利影响。