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    • 3. 发明授权
    • Automatic suppression of images of a video feed in a video call or videoconferencing system
    • 在视频通话或视频会议系统中自动抑制视频馈送的图像
    • US08462191B2
    • 2013-06-11
    • US12961220
    • 2010-12-06
    • Brad DeGraziaSteve OlivierAlan D. Gatzke
    • Brad DeGraziaSteve OlivierAlan D. Gatzke
    • H04N7/15
    • H04N7/147H04N7/15
    • In one embodiment, a method for determining whether to suppress images of a video feed in a video call or videoconference is provided. A communications server receives a first video feed from a first client and determines whether a face is present in images of the first video feed. The communication server determines whether to suppress images of the first video feed from a second video feed based on whether a face is detected in images of the first video feed. The communication server suppresses images of the first video feed from the second video feed in response to determining to suppress images of the first video feed and disseminates the second video feed to a second client.
    • 在一个实施例中,提供了一种用于确定是否抑制视频通话或视频会议中的视频馈送的图像的方法。 通信服务器从第一客户端接收第一视频馈送并且确定在第一视频馈送的图像中是否存在脸部。 通信服务器基于是否在第一视频馈送的图像中检测到脸部来确定是否从第二视频馈送抑制第一视频馈送的图像。 响应于确定抑制第一视频馈送的图像并向第二客户端传播第二视频馈送,通信服务器从第二视频馈送抑制第一视频馈送的图像。
    • 4. 再颁专利
    • Rapid decryption of data by key synchronization and indexing
    • 通过密钥同步和索引快速解密数据
    • USRE41919E1
    • 2010-11-09
    • US12425314
    • 2009-04-16
    • Steve OlivierGary L. PelkeyDavid M. PlacekKevin Kennedy
    • Steve OlivierGary L. PelkeyDavid M. PlacekKevin Kennedy
    • H04L9/00
    • H04L9/12H04H40/90H04H60/23H04L9/0662H04L2209/12H04L2209/601H04N7/1675H04N21/26606H04N21/26613H04N21/454H04N21/6143H04N21/63345
    • A satellite broadcast conditional access system with key synchronization uses indexing of an authorization stream to quickly restart the decrypting process after short carrier fades and after carrier switches. The authorization stream includes cyphered seeds and index numbers which are sequentially sent to a group of receivers. The same authorization stream can also be broadcast multiple times to the group of receivers. A conditional access server selects a starting index number and increments the index number by a predefined value. The receivers have a memory to save the current index number for the authorization stream. Any receiver that loses its connection to the broadcast and thereafter reestablishes its connection can retrieve the latest index number being issued in the authorization stream and compare it with the stored index number. When the index numbers match or are within a defined threshold, the receiver will continue to decypher the seeds and decrypt the transport stream.
    • 具有密钥同步的卫星广播条件接入系统使用授权流的索引,在短载波衰落之后和载波切换之后快速重启解密过程。 授权流包括顺序地发送到一组接收器的加密种子和索引号。 相同的授权流也可以多次广播到接收机组。 条件访问服务器选择起始索引号,并将索引号增加预定义值。 接收器具有用于保存授权流的当前索引号的存储器。 任何失去与广播连接并随后重新建立连接的接收方可以检索在授权流中发布的最新索引号码,并将其与存储的索引号进行比较。 当索引号匹配或处于定义的阈值内时,接收器将继续解密种子并解密传输流。
    • 6. 发明授权
    • Rapid decryption of data by key synchronization and indexing
    • 通过密钥同步和索引快速解密数据
    • US07206411B2
    • 2007-04-17
    • US10640118
    • 2003-08-13
    • Steve OlivierGary L. PelkeyDavid M. PlacekKevin Kennedy
    • Steve OlivierGary L. PelkeyDavid M. PlacekKevin Kennedy
    • H04L9/00
    • H04L9/12H04H40/90H04H60/23H04L9/0662H04L2209/12H04L2209/601H04N7/1675H04N21/26606H04N21/26613H04N21/454H04N21/6143H04N21/63345
    • A satellite broadcast conditional access system with key synchronization uses indexing of an authorization stream to quickly restart the decrypting process after short carrier fades and after carrier switches. The authorization stream includes cyphered seeds and index numbers which are sequentially sent to a group of receivers. The same authorization stream can also be broadcast multiple times to the group of receivers. A conditional access server selects a starting index number and increments the index number by a predefined value. The receivers have a memory to save the current index number for the authorization stream. Any receiver that loses its connection to the broadcast and thereafter reestablishes its connection can retrieve the latest index number being issued in the authorization stream and compare it with the stored index number. When the index numbers match or are within a defined threshold, the receiver will continue to decypher the seeds and decrypt the transport stream.
    • 具有密钥同步的卫星广播条件接入系统使用授权流的索引,在短载波衰落之后和载波切换之后快速重启解密过程。 授权流包括顺序地发送到一组接收器的加密种子和索引号。 相同的授权流也可以多次广播到接收机组。 条件访问服务器选择起始索引号,并将索引号增加预定义值。 接收器具有用于保存授权流的当前索引号的存储器。 任何失去与广播连接并随后重新建立连接的接收方可以检索在授权流中发布的最新索引号码,并将其与存储的索引号进行比较。 当索引号匹配或处于定义的阈值内时,接收器将继续解密种子并解密传输流。