公开(公告)号：US10023882B1

公开(公告)日：2018-07-17

申请号：US15641268

申请日：2017-07-04

申请人： Rongzhen Zhang ,  Yan Xu ,  Yaohui Li

发明人： Rongzhen Zhang ,  Yan Xu ,  Yaohui Li

IPC分类号： C12N9/02 ,  C12P7/02 ,  C12N11/18 ,  C12P7/22 ,  C12N9/04 ,  C12P17/12

摘要： Provided are novel hetero-oligomers of (S)-carbonyl reductases and their application in catalyzing the reduction of polyphenyl ketones. Also provided are recombinant strains expressing hetero-oligomers of SCR/SCR2 or SCR2/SCR3, which can catalyze the reduction of polyphenyl ketones. The hetero-oligomer of SCR/SCR2 is capable of catalyzing 2,4-dichlorobenzophenone, 2-naphthalenone and [(E)-2-[3-[3-[2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-3-oxopropyl]benzoic acid methyl ester (Keto Easter M) with a specific activity of 4.55 U/mg, 2.43 U/mg and 0.86 U/mg, respectively. The hetero-oligomer of SCR2/SCR3 is capable of catalyzing 2,4-dichlorobenzophenone and [(E)-2-[3-[3-[2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-3-oxopropyl]benzoic acid methyl ester (Keto Easter M) with a specific activity of 4.42 U/mg and 1.21 U/mg, respectively. No catalyzing activities for reducing polyphenyl ketones were detected in the naturally existing homo-oligomers of SCR, SCR2 or SCR3, which can catalyze the reduction of monobenzoic cyclic compounds. The invention expands the substrate spectrum of natural (S)-carbonyl reductases (SCR, SCR2 and SCR3) and provides a novel type of oxidoreductases for catalyzing the reduction of polyphenyl ketones.

公开(公告)号：US08074212B2

公开(公告)日：2011-12-06

申请号：US11911197

申请日：2006-04-11

申请人： Yaohui Li ,  Yuqin Dai

发明人： Yaohui Li ,  Yuqin Dai

IPC分类号： G06F9/44

CPC分类号： H04N5/4401 ,  H04N21/235 ,  H04N21/26291 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/4586 ,  H04N21/8166

摘要： A method and an apparatus for software upgrade in a digital television receiving device are disclosed. The method includes multiplexing service software into a transport stream according to a predefined protocol, extracting by the digital television receiving device data of the service software from the transport stream and storing the data, restarting the digital television receiving device, so that digital television receiving device software and the service software may obtain addresses of interface functions of the opposite party, and updating by the digital television receiving device software and the service software, default addresses of the interface functions of the service software and the digital television receiving device software according to the obtained addresses. With the invention, the digital television receiving device software and the service software may be independent from each other, and may be upgraded separately.

摘要翻译： 公开了一种在数字电视接收装置中进行软件升级的方法和装置。 该方法包括根据预定义的协议将业务软件复用到传输流中，由数字电视接收设备从传输流提取服务软件的数据并存储数据，重启数字电视接收设备，使得数字电视接收设备 软件和服务软件可以获得对方的接口功能的地址，并且由数字电视接收设备软件和服务软件更新，服务软件和数字电视接收设备软件的接口功能的默认地址根据 获得地址。 利用本发明，数字电视接收设备软件和服务软件可以彼此独立，并且可以单独升级。

公开(公告)号：US20090097819A1

公开(公告)日：2009-04-16

申请号：US12336372

申请日：2008-12-16

申请人： Jiying Dui ,  Yaohui Li ,  Yandong Cao

发明人： Jiying Dui ,  Yaohui Li ,  Yandong Cao

IPC分类号： H04N5/91

CPC分类号： H04N21/6587 ,  H04N7/17336 ,  H04N21/2343 ,  H04N21/2387 ,  H04N21/47202 ,  H04N21/8455

摘要： An embodiment of the present invention disclose a method for fast forward/backward play of video data includes: obtaining fast forward/backward index information that meets a fast forward/backward play request from a pre-generated fast forward/backward sequence index file according to the fast forward/backward play request from a client; and obtaining video data that meets the fast forward/backward play request from a pre-generated fast forward/backward sequence file according to the index information and transmitting the video data to the client via a network. An embodiment of the present invention also discloses a streaming server. With the method and streaming server provided by the present invention, the fast forward/backward video data reading efficiency of the streaming server may be improved.

摘要翻译： 本发明的一个实施例公开了一种用于视频数据的快速前进/后退播放的方法，包括：根据预先生成的快速前进/后向序列索引文件，获得满足快进前进/后退播放请求的快进/后退索引信息 来自客户端的快速向前/向后播放请求; 并根据索引信息从预生成的快进/反向顺序文件获取满足快进/向后播放请求的视频数据，并通过网络将视频数据发送给客户端。 本发明的实施例还公开了流服务器。 利用本发明提供的方法和流服务器，可以提高流服务器的快进/后向视频数据读取效率。

公开(公告)号：US20080216100A1

公开(公告)日：2008-09-04

申请号：US11911197

申请日：2006-04-11

申请人： Yaohui Li ,  Yuqin Dai

发明人： Yaohui Li ,  Yuqin Dai

IPC分类号： G06F9/445 ,  G06F9/44

CPC分类号： H04N5/4401 ,  H04N21/235 ,  H04N21/26291 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/4586 ,  H04N21/8166

摘要： A method and an apparatus for software upgrade in a digital television receiving device are disclosed. The method includes multiplexing service software into a transport stream according to a predefined protocol,extracting by the digital television receiving device data of the service software from the transport stream and storing the data, restarting the digital television receiving device, so that digital television receiving device software and the service software may obtain addresses of interface functions of the opposite party, and updating by the digital television receiving device software and the service software, default addresses of the interface functions of the service software and the digital television receiving device software according to the obtained addresses. With the invention, the digital television receiving device software and the service software may be independent from each other, and may be upgraded separately.

摘要翻译： 公开了一种在数字电视接收装置中进行软件升级的方法和装置。 该方法包括根据预定义的协议将业务软件复用到传输流中，由数字电视接收设备从传输流提取服务软件的数据并存储数据，重启数字电视接收设备，使数字电视接收设备 软件和服务软件可以获得对方的接口功能的地址，并且由数字电视接收设备软件和服务软件更新，服务软件和数字电视接收设备软件的接口功能的默认地址根据 获得地址。 利用本发明，数字电视接收设备软件和服务软件可以彼此独立，并且可以单独升级。

公开(公告)号：US08311399B2

公开(公告)日：2012-11-13

申请号：US12336372

申请日：2008-12-16

申请人： Jiying Dui ,  Yaohui Li ,  Yandong Cao

发明人： Jiying Dui ,  Yaohui Li ,  Yandong Cao

IPC分类号： H04N5/91

CPC分类号： H04N21/6587 ,  H04N7/17336 ,  H04N21/2343 ,  H04N21/2387 ,  H04N21/47202 ,  H04N21/8455

摘要： An embodiment of the present invention disclose a method for fast forward/backward play of video data includes: obtaining fast forward/backward index information that meets a fast forward/backward play request from a pre-generated fast forward/backward sequence index file according to the fast forward/backward play request from a client; and obtaining video data that meets the fast forward/backward play request from a pre-generated fast forward/backward sequence file according to the index information and transmitting the video data to the client via a network. An embodiment of the present invention also discloses a streaming server. With the method and streaming server provided by the present invention, the fast forward/backward video data reading efficiency of the streaming server may be improved.

摘要翻译： 本发明的一个实施例公开了一种用于视频数据的快速前进/后退播放的方法，包括：根据预先生成的快速前进/后向序列索引文件，获得满足快进前进/后退播放请求的快进/后退索引信息 来自客户端的快速向前/向后播放请求; 并根据索引信息从预生成的快进/反向顺序文件获取满足快进/向后播放请求的视频数据，并通过网络将视频数据发送给客户端。 本发明的实施例还公开了流服务器。 利用本发明提供的方法和流服务器，可以提高流服务器的快进/后向视频数据读取效率。

公开(公告)号：US20080063195A1

公开(公告)日：2008-03-13

申请号：US11857485

申请日：2007-09-19

申请人： Yaohui Li

发明人： Yaohui Li

IPC分类号： H04N7/167 ,  H04L9/18

CPC分类号： H04K1/00 ,  H04L9/00 ,  H04L29/06027 ,  H04L63/0457 ,  H04L65/602 ,  H04L65/607 ,  H04L2209/20 ,  H04L2209/603

摘要： Methods for encrypting or decrypting WMV streaming media are disclosed. The encrypting includes: acquiring WMV streaming media, generating a content key; and encrypting the WMV streaming media using the content key; the decrypting includes: acquiring WMV streaming media encrypted, encryption information and a content key; and decrypting the WMV streaming media encrypted according to the encryption information and the content key. Devices for encrypting or decrypting WMV streaming media are also disclosed. The scheme of encrypting or decrypting the WMV streaming media is enabled in a DRM system based on Open Mobile Alliance specifications and Internet Stream Media Alliance specifications, thus richly diversifying the content providers' choices on the media formats of on-demand streaming media.

摘要翻译： 公开了加密或解密WMV流媒体的方法。 加密包括：获取WMV流媒体，生成内容密钥; 并使用内容密钥加密WMV流媒体; 解密包括：获取WMV流媒体加密，加密信息和内容密钥; 并解密根据加密信息和内容密钥加密的WMV流媒体。 还公开了用于加密或解密WMV流媒体的设备。 在基于开放移动联盟规范和因特网流媒体联盟规范的DRM系统中启用加密或解密WMV流媒体的方案，从而使内容提供商对按需流媒体的媒体格式的选择丰富多样。

公开(公告)号：US08612621B2

公开(公告)日：2013-12-17

申请号：US12505788

申请日：2009-07-20

申请人： Zhibing Wang ,  Zhefeng Yan ,  Haohua Chen ,  Jiying Dui ,  Yaohui Li ,  Jiahao Wei ,  Chuansong Xue

发明人： Zhibing Wang ,  Zhefeng Yan ,  Haohua Chen ,  Jiying Dui ,  Yaohui Li ,  Jiahao Wei ,  Chuansong Xue

IPC分类号： G06F15/16

CPC分类号： H04L67/104 ,  H04L12/18 ,  H04L45/00 ,  H04L65/4069 ,  H04L65/80 ,  H04L67/1046 ,  H04L67/2842

摘要： A method for constructing a network topology is applied in a streaming delivery system. The streaming delivery system includes: a center server (CS-P), an edge server (ES-P), a request scheduling server (RRS-P), and a client. The disclosed embodiments utilizes the upload capabilities of the client to transmit a part of streaming data, thus consuming fewer center server resources. By constructing the network topology, the disclosed embodiments enable the client to obtain a part of streaming data from other clients, reduces the load capability requirements for the server, and ensures that a streaming delivery network may provide streaming live services with higher bandwidths and better quality.

摘要翻译： 一种用于构建网络拓扑的方法被应用在流传输系统中。 流传输系统包括：中心服务器（CS-P），边缘服务器（ES-P），请求调度服务器（RRS-P）和客户端。 所公开的实施例利用客户端的上传功能来传送一部分流数据，从而消耗较少的中心服务器资源。 通过构建网络拓扑，所公开的实施例使得客户端能够从其他客户端获得流数据的一部分，降低了服务器的负载能力要求，并且确保流传送网络可以提供具有更高带宽和更好质量的流媒体直播服务 。

公开(公告)号：US20090282160A1

公开(公告)日：2009-11-12

申请号：US12505788

申请日：2009-07-20

申请人： Zhibing WANG ,  Zhefeng Yan ,  Haohua Chen ,  Jiying Dui ,  Yaohui Li ,  Jiahao Wei ,  Chuansong Xue

发明人： Zhibing WANG ,  Zhefeng Yan ,  Haohua Chen ,  Jiying Dui ,  Yaohui Li ,  Jiahao Wei ,  Chuansong Xue

IPC分类号： G06F15/16

CPC分类号： H04L67/104 ,  H04L12/18 ,  H04L45/00 ,  H04L65/4069 ,  H04L65/80 ,  H04L67/1046 ,  H04L67/2842

摘要： A method for constructing a network topology is applied in a streaming delivery system. The streaming delivery system includes: a center server (CS-P), an edge server (ES-P), a request scheduling server (RRS-P), and a client. The disclosed embodiments utilizes the upload capabilities of the client to transmit a part of streaming data, thus consuming fewer center server resources. By constructing the network topology, the disclosed embodiments enable the client to obtain a part of streaming data from other clients, reduces the load capability requirements for the server, and ensures that a streaming delivery network may provide streaming live services with higher bandwidths and better quality.

摘要翻译： 一种用于构建网络拓扑的方法被应用在流传输系统中。 流传输系统包括：中心服务器（CS-P），边缘服务器（ES-P），请求调度服务器（RRS-P）和客户端。 所公开的实施例利用客户端的上传功能来传送一部分流数据，从而消耗较少的中心服务器资源。 通过构建网络拓扑，所公开的实施例使得客户端能够从其他客户端获得流数据的一部分，降低了服务器的负载能力要求，并且确保流传输网络可以提供具有更高带宽和更好质量的流媒体直播服务 。