专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08707141B1 Joint optimization of packetization and error correction for video communication 有权
标题翻译：联合优化视频通信的分组和纠错
公开(公告)号：US08707141B1
公开(公告)日：2014-04-22
申请号：US13196359
申请日：2011-08-02
申请人： Rui Zhang , Qiyong Liu , Bo Ling , Siping Tao
发明人： Rui Zhang , Qiyong Liu , Bo Ling , Siping Tao
IPC分类号： H03M13/00
CPC分类号： H03M13/353 , H04N21/2383
摘要： In one embodiment, a process determines a size of a video unit (e.g., frame) to transmit from a sender to a receiver across a communication channel for an associated video stream, and also determines an updated packet loss rate on the channel. In response, the process may dynamically determine both a number N of video data packets and a number M of forward error correction (FEC) packets to transmit for the video unit based on the size of the video unit, the updated packet loss rate on the channel, and an error resilience requirement for the video stream. In an illustrative embodiment, N and M are determined during transmission of the video stream through a look-up operation into a table indexed by the size of the video unit and the updated packet loss rate as co-indices, the co-indices co-indexing a pre-determined N and M pair.
摘要翻译：在一个实施例中，过程确定通过用于相关联的视频流的通信信道从发送方发送到接收者的视频单元（例如，帧）的大小，并且还确定信道上的更新的丢包率。作为响应，该过程可以基于视频单元的大小来动态地确定视频数据分组的数量N和数字M的前向纠错（FEC）分组，以便为视频单元发送，更新的丢包率频道和视频流的错误恢复能力要求。在说明性实施例中，在通过查找操作将视频流传输到由视频单元的大小索引的表和更新的分组丢失率作为共同索引的同时，确定N和M，索引预定的N和M对。

2. 发明授权

US10609390B1 Adaptive screen encoding control 有权
公开(公告)号：US10609390B1
公开(公告)日：2020-03-31
申请号：US15986655
申请日：2018-05-22
申请人： Jing Wu , Zhaofeng Jia , Bo Ling , Qiyong Liu
发明人： Jing Wu , Zhaofeng Jia , Bo Ling , Qiyong Liu
IPC分类号： H04N19/177 , H04N19/172 , H04N19/179 , H04N7/15 , H04N19/136
摘要： An adaptive screen encoding method comprising: using a computer, creating and storing, in computer memory, a plurality of conditions for use by a server configured to determine which of picture coding type to select; detecting a current picture by a sender for a content type including textual content, graphical content, and natural image content; determining a percentage of static macroblocks corresponding to the current picture; selecting the picture coding type based on the content type, the plurality of conditions, and the percentage of static macroblocks, wherein the method is performed by one or more special-purpose computing devices.

3. 发明申请

US20050208655A1 Blood cells having modified antigenicity 审中-公开
标题翻译：具有改良抗原性的血细胞
公开(公告)号：US20050208655A1
公开(公告)日：2005-09-22
申请号：US11049271
申请日：2005-02-02
申请人： Henrik Clausen , Humberto de la Vega , Cheryl Hill , Qiyong Liu
发明人： Henrik Clausen , Humberto de la Vega , Cheryl Hill , Qiyong Liu
IPC分类号： A61K35/18 , A61P7/06 , C12N1/20 , C12N1/21 , C12N5/078 , C12N9/24 , C12N9/40 , C12Q1/34 , C12N5/08
CPC分类号： C12N5/0641 , C12N9/2402 , C12N9/2465 , C12Q1/34 , C12R1/465 , C12Y302/01022 , C12Y302/01049
摘要： This invention relates to enzymatic removal of type A and B antigens from blood group A, B, and AB reactive cells in blood products, and thereby converting these to non-A and non-B reactive cells. The invention further relates to using unique alpha N-acetylgalactosaminidases and alpha-galactosidases with superior kinetic properties for removing the immunodominant monosaccharides of the blood group A and B antigens and improved performance in enzymatic conversion of red blood cells. The preferred unique alpha-N-acetylgalactosaminidases and alpha-galactosidases exhibit the following characteristics: (i) exclusive, preferred or no less than 10% substrate specificity for the type A and B branched polysaccharide structures relative to measurable activity with simple mono- and disaccharide structures and aglycon derivatives hereof; (ii) optimal performance at neutral pH with blood group oligosaccharides and in enzymatic conversion of cells; and (iii) a favorable kinetic constant Km with mono- and oligosaccharide substrates. The conversion methods of the invention use significantly lower amounts of recombinant glycosidase enzymes than previous and result in complete sero-conversion of all blood group A and B red cells.
摘要翻译：本发明涉及从血型A，B，AB型反应性细胞中分离A型和B型抗原，从而将其转化为非A型和非B型细胞。本发明还涉及使用独特的α-N-乙酰半乳糖胺酶和具有优异动力学性质的α-半乳糖苷酶，用于去除血型A和B抗原的免疫优势单糖，并提高红细胞酶促转化的性能。优选的独特的α-N-乙酰半乳糖胺酶和α-半乳糖苷酶具有以下特征：（i）相对于简单的单糖和二糖的可测量的活性，对于A型和B型支链多糖结构的排列，优选或不低于10％的底物特异性结构和糖苷配基衍生物; （ii）在中性pH下用血型寡糖和细胞酶促转化的最佳性能; 和（iii）具有单糖和寡糖底物的有利的动力学常数Km。本发明的转化方法比以前使用显着更低量的重组糖苷酶，并导致所有血型A和B红细胞的完全血清转化。

4. 发明授权

US09344218B1 Error resilience for interactive real-time multimedia applications 有权
标题翻译：交互式实时多媒体应用程序的错误恢复能力
公开(公告)号：US09344218B1
公开(公告)日：2016-05-17
申请号：US14462266
申请日：2014-08-18
申请人： Qiyong Liu , Zhaofeng Jia , Kai Jin , Jing Wu , Huipin Zhang
发明人： Qiyong Liu , Zhaofeng Jia , Kai Jin , Jing Wu , Huipin Zhang
IPC分类号： H04L1/18 , H03M13/00 , H04L1/00 , H04N7/15
CPC分类号： H04L1/08 , H04L1/0009 , H04L1/0045 , H04L1/007 , H04L1/0076 , H04L1/1867 , H04L43/0829 , H04L65/403 , H04L65/607 , H04L65/80 , H04L2001/0093 , H04N7/152
摘要： An error resilience method comprising: using a computer, creating and storing, in computer memory, one or more FEC filter tables for use by the FEC filter for selectively forwarding a FEC packet; selectively forwarding a request for the FEC packet through a FEC filter based on the FEC table and a dynamic packet loss level at a receiver; limiting a re-transmission request for a particular packet through the FEC filter based on a number of re-transmission requests for the particular packet; and selectively skipping a key frame request based on a number of key frame requests received from a plurality receiver devices, wherein the method is performed by one or more special-purpose computing devices.
摘要翻译：一种错误恢复方法，包括：使用计算机，在计算机存储器中创建和存储一个或多个FEC过滤器表，供FEC过滤器用于选择性地转发FEC分组; 基于FEC表选择性地转发通过FEC滤波器对FEC分组的请求以及在接收机处的动态分组丢失水平; 基于针对特定分组的重传请求的数量，通过FEC滤波器限制针对特定分组的重传请求; 以及基于从多个接收机设备接收的多个关键帧请求选择性地跳过关键帧请求，其中所述方法由一个或多个专用计算设备执行。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式