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1.发明授权公开(公告)号：US09147223B2
公开(公告)日：2015-09-29
申请号：US14356243
申请日：2012-12-18
Inventor： Xiaowei Guo , Kai Li
CPC classification number: G06T1/0078 , G06T1/0028 , G06T1/005 , G06T2201/0052 , G06T2201/0065 , G06T2201/0083
Abstract: The present disclosure discloses a method and device for localized blind watermark generation and detection. The method for localized blind watermark generation may include: generating an N-dimensional pseudorandom initial sequence according to a preset key, and generating a 2N-dimensional sequence by inverting the initial sequence bit by bit and appending the inverted sequence to the initial sequence; and extracting the first 2N coefficients of a feature point of an image to form a coefficient sequence, and acquiring a parity of a bit of the coefficient sequence according to a parity of a corresponding bit of the 2N-dimensional sequence. With the present disclosure, redundant expansion may be performed on watermark data to increase the scale of test data with respect to the original bit data before embedding the test data into a transformation domain of the vicinity of a feature point of an image; during detection, a sequence extracted from the transformation domain of the vicinity of a certain feature point is checked bit by bit, and it is determined whether a watermark is embedded in the vicinity of the point base on the result of the examination, thereby enhancing a watermark detecting efficiency.
Abstract translation: 本公开公开了一种用于局部盲水印产生和检测的方法和装置。 用于本地化水印生成的方法可以包括：根据预设密钥生成N维伪随机初始序列，并且通过逐位反转初始序列并将反相序列附加到初始序列来生成2N维序列; 并且提取图像的特征点的前2N个系数以形成系数序列，并且根据2N维序列的相应比特的奇偶校验获取系数序列的比特的奇偶校验。 利用本公开，可以对水印数据执行冗余扩展，以在将测试数据嵌入图像的特征点附近的变换域之前增加关于原始比特数据的测试数据的比例; 在检测期间，逐个地检查从某个特征点的附近的变换域提取的序列，并且根据检查结果确定水印是否嵌入在点基附近，从而增强了 水印检测效率。
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公开(公告)号：US09065788B2
公开(公告)日：2015-06-23
申请号：US14160454
申请日：2014-01-21
Inventor： Bin Zhang , Yuejun Liu , Kai Liu , Jinhai Liu , Liangliang Fan , Chenglin Liu , Yueteng Weng , Yaxuan Zhu , Qing He , Yuexin Zhang , Jin Lin , Yuewei Chen , Qianya Lin , Kai Li , Yi Dan
CPC classification number: H04L51/04 , H04L51/046 , H04L51/38 , H04N21/258 , H04N21/42684 , H04N21/4788 , H04N21/6137 , H04W4/12
Abstract: A method is performed at a computer server for enabling voice communication between two terminals through IM service. Upon receiving a message from a remote computer, the message including an IM identifier of a callee terminal user and a mobile device identifier of the terminal, the computer system updates an entry for the callee terminal user in a database. Upon receiving a request from a caller terminal user at a caller terminal to start voice communication with the callee terminal user, the computer server identifies the entry that includes the IM identifier of the callee terminal user and sends a voice communication request to a service control point (SCP) in a switched telephone network. The SCP then returns an IP address and a port number of the callee terminal and launches a call request against the callee terminal. The computer server establishes a voice communication channel between the two terminals.
Abstract translation: 在计算机服务器上执行一种方法，用于通过IM服务实现两个终端之间的语音通信。 在从远程计算机接收到消息时，该消息包括被叫终端用户的IM标识符和终端的移动设备标识符，计算机系统在数据库中更新被叫终端用户的条目。 在接收到来自呼叫者终端的呼叫者终端用户的请求以与被叫终端用户开始语音通信的情况下，计算机服务器识别包括被叫方终端用户的IM标识符的条目，并向服务控制点发送语音通信请求 （SCP）在交换电话网络中。 SCP然后返回被叫终端的IP地址和端口号，并向被叫终端发起呼叫请求。 计算机服务器在两个终端之间建立语音通信信道。
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公开(公告)号：US11132222B2
公开(公告)日：2021-09-28
申请号：US16532089
申请日：2019-08-05
Inventor： Haojun Hu , Kai Li , Shangtao Liang
Abstract: An application processing method includes: displaying a first child application page of a first child application; and acquiring, by using the first child application, a second child application identifier corresponding to a second child application to be jumped to. The first child application is run by a parent application. The method also includes: the parent application running the second child application when a jump is made from the first child application to the second child application; transferring page data corresponding to the second child application identifier to the second child application; and generating, according to the page data, a second child application page over the first child application page, and displaying the second child application page.
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公开(公告)号：US20200264743A1
公开(公告)日：2020-08-20
申请号：US16868438
申请日：2020-05-06
Inventor： Yanjia CHI , Wei Li , Xialun Lai , Leteng Weng , Hao Chen , Liang Ma , Shun Li , Danxiong Lei , Hongqiang Chen , Yifu Wang , Hui Chen , Sixin Gu , Kai Li , Yuewei Chen
IPC: G06F3/0483 , G06F9/451
Abstract: An application processing method is performed at a computing device, the method including: displaying a first page of a first child application managed by a parent application, the first page of the first child application including a child application jump portal; detecting a child application jump operation corresponding to the first page in response to a user selection of the child application jump portal; presenting, in the first page candidate child application identifiers according to the child application jump operation; determining a child application identifier that is selected from the presented child application identifiers through a user selection operation; and generating, by using a second child application corresponding to the user-selected child application identifier, a second page that is displayed by covering the first page already displayed and that belongs to the second child application.
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公开(公告)号：US10609334B2
公开(公告)日：2020-03-31
申请号：US16435733
申请日：2019-06-10
Inventor： Kai Li
IPC: H04N7/15 , G06T7/70 , G06F3/01 , G06K9/00 , G06T7/20 , G06T13/40 , G06T17/00 , H04N7/14 , H04N13/204
Abstract: A group video communication method and a network device are provided. A user type of each user in a group video session is determined according to device information of the user. The user type includes: common user indicating that the user uses a two-dimensional display mode when participating in the group video session, and virtual user indicating that the user uses a virtual reality (VR) display mode when participating in the group video session. Video data of the group video session is processed according to a video display mode indicated by the user type to obtain target video data of the user. The target video data is sent to a user equipment of the user during the group video session, so that the user equipment presents the target video data of the group video session in the video display mode indicated by the user type of the user.
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Patent Agency Ranking
公开(公告)号：US11164278B2
公开(公告)日：2021-11-02
申请号：US17147406
申请日：2021-01-12
Inventor： Zhaowei Wang , Yifu Wang , Kai Li , Zongzhuo Wu , Shangtao Liang
IPC: G06T1/00 , G06F3/0481 , G06F3/0484 , G06F9/54 , G06F3/0485 , H04L12/58
Abstract: A screen capture method includes the following steps: obtaining a screenshot instruction for a target page; obtaining, according to the screenshot instruction, a screenshot of an area currently displayed on the target page; covering the area currently displayed on the target page with the screenshot for display; changing an area covered by the screenshot on the target page to a designated area on the target page; obtaining a screenshot of the designated area; and restoring the target page to the area displayed before the target page is changed to the designated area.
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公开(公告)号：US11109029B2
公开(公告)日：2021-08-31
申请号：US16459846
申请日：2019-07-02
Inventor： Kai Li , Pulin Wang , Xiaocui Ji
IPC: H04N19/124 , H04N19/137 , H04N19/142 , H04N19/172 , H04N19/186
Abstract: The disclosure discloses a video enhancement method and device, and belongs to the field of image processing. The method includes that: each frame in a video is sequentially acquired; and for each current frame, attribute information reflecting a moving state or luminance is determined, a preset mapping relationship is searched to obtain a control parameter corresponding to the attribute information, and video enhancement operation is executed on the current frame by using the control parameter. The device includes: an acquisition module and an enhancement module. By the disclosure, the problem of processing inflexibility caused by execution of the same enhancement over each frame in the video is solved, each frame in the video may be differentially enhanced, frame-based video enhancement is implemented, a video enhancement effect is effectively improved, and quality of the video is improved.
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8.发明授权Method and system for managing real-time audio broadcasts among a group of users 有权一组用户管理实时音频广播的方法和系统公开(公告)号：US09374682B2
公开(公告)日：2016-06-21
申请号：US14091304
申请日：2013-11-26
Inventor： Yueteng Weng , Zhuo Tang , Bin Zhang , Kai Li , Yi Dan
CPC classification number: H04W4/06 , H04L12/1818 , H04L51/04 , H04W4/08 , H04W4/10
Abstract: An information exchange method and system, a server and an instant messaging client are provided. The method may include: when receiving a chat session request message sent by a first instant messaging client in an intercom group, receiving, by a server, chat session audio information transmitted by the first instant messaging client; and when receiving a chat session stop message sent by the first instant messaging client, distributing, by the server, the chat session audio information to instant messaging clients, except the first instant messaging client, in the intercom group for real-time playing. The instant messaging client implements an intercom talk function based on a network, thereby saving the purchase cost and improving the confidentiality and stability of information exchange.
Abstract translation: 提供信息交换方法和系统，服务器和即时消息客户端。 该方法可以包括：当接收由对讲组中的第一即时消息接发客户端发送的聊天会话请求消息时，由服务器接收由第一即时消息接发客户端发送的聊天会话音频信息; 并且当接收到由第一即时消息接发客户发送的聊天会话停止消息时，服务器将对话会话音频信息分发给对讲组中的除第一即时消息接发客户端之外的即时消息客户端，用于实时播放。 即时消息客户端基于网络实现对讲功能，从而节省购买成本，提高信息交换的机密性和稳定性。
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公开(公告)号：US20140324986A1
公开(公告)日：2014-10-30
申请号：US13989730
申请日：2013-04-28
Inventor： Bin Zhang , Kai Li , Xueqin Lin , Zhiyuan Lin , Jiangxun Lin , Zhuo Tang , Ling Li , Yi Dan
IPC: H04L12/58
CPC classification number: H04L51/046 , H04L51/36
Abstract: A mobile terminal collects information items identified by a user of the mobile terminal, the collected information items having different formats of data that are to be rendered by different applications at the mobile terminal. The mobile terminal synchronizes itself with the remote server so that the user can access the plurality of information items stored at the remote server from another terminal. Next, the mobile terminal displays some information items in a chronological order. In response to detecting a user selection of one information item, the mobile terminal determines whether data associated with the information item is in the mobile terminal or not. If the data is present in the mobile terminal, the mobile terminal then renders the data on the mobile terminal. Otherwise, the mobile terminal first downloads the data from the remote server and then renders the data on the mobile terminal.
Abstract translation: 移动终端收集由移动终端的用户识别的信息项，所收集的信息项具有在移动终端由不同应用呈现的不同格式的数据。 移动终端自身与远程服务器同步，使得用户可以从另一终端访问存储在远程服务器上的多个信息项。 接下来，移动终端按时间顺序显示一些信息项。 响应于检测到一个信息项目的用户选择，移动终端确定与该信息项目相关联的数据是否在移动终端中。 如果数据存在于移动终端中，则移动终端然后在移动终端上呈现数据。 否则，移动终端首先从远程服务器下载数据，然后在移动终端上呈现数据。
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10.发明申请公开(公告)号：US20140307916A1
公开(公告)日：2014-10-16
申请号：US14356243
申请日：2012-12-18
Inventor： Xiaowei Guo , Kai Li
IPC: G06T1/00
CPC classification number: G06T1/0078 , G06T1/0028 , G06T1/005 , G06T2201/0052 , G06T2201/0065 , G06T2201/0083
Abstract: The present disclosure discloses a method and device for localized blind watermark generation and detection. The method for localized blind watermark generation may include: generating an N-dimensional pseudorandom initial sequence according to a preset key, and generating a 2N-dimensional sequence by inverting the initial sequence bit by bit and appending the inverted sequence to the initial sequence; and extracting the first 2N coefficients of a feature point of an image to form a coefficient sequence, and acquiring a parity of a bit of the coefficient sequence according to a parity of a corresponding bit of the 2N-dimensional sequence. With the present disclosure, redundant expansion may be performed on watermark data to increase the scale of test data with respect to the original bit data before embedding the test data into a transformation domain of the vicinity of a feature point of an image; during detection, a sequence extracted from the transformation domain of the vicinity of a certain feature point is checked bit by bit, and it is determined whether a watermark is embedded in the vicinity of the point base on the result of the examination, thereby enhancing a watermark detecting efficiency.
Abstract translation: 本公开公开了一种用于局部盲水印产生和检测的方法和装置。 用于本地化水印生成的方法可以包括：根据预设密钥生成N维伪随机初始序列，并且通过逐位反转初始序列并将反相序列附加到初始序列来生成2N维序列; 并且提取图像的特征点的前2N个系数以形成系数序列，并且根据2N维序列的相应比特的奇偶校验获取系数序列的比特的奇偶校验。 利用本公开，可以对水印数据执行冗余扩展，以在将测试数据嵌入图像的特征点附近的变换域之前增加关于原始比特数据的测试数据的比例; 在检测期间，逐个地检查从某个特征点的附近的变换域提取的序列，并且根据检查结果确定水印是否嵌入在点基附近，从而增强了 水印检测效率。
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