Patents by Inventor Wenwu Zhu

Wenwu Zhu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20130014064
    Abstract: Predictive, multi-layer caching architectures may be used to predict which elements a user is most likely to navigate to within a collection of elements associated with a predefined layout and, in response, to increase the accessibility of these elements to a client device of the user. For instance, the techniques may utilize a predictive, multi-layer caching architecture for storing these predicted elements to decrease the latency to render these images if the user navigates within the collection of elements in the predicted manner. The collection of elements may comprise images (e.g., a 3D model, a map, etc.), video files, audio files, text files, or any other type of file that is consumable on a client device.
    Type: Application
    Filed: July 6, 2011
    Publication date: January 10, 2013
    Applicant: Microsoft Corporation
    Inventors: Wenwu Zhu, Zheng Li, Roberto R. Molinari, Hongzhi Li
  • Publication number: 20120320032
    Abstract: This document describes techniques for creating three-dimensional models of image collections using a network-accessible (e.g., cloud-based) computation service, rather than a client computing device. In some instances described below, the computation service performs at least a portion of the operations for creating these models in parallel.
    Type: Application
    Filed: June 14, 2011
    Publication date: December 20, 2012
    Applicant: Microsoft Corporation
    Inventors: Wenwu Zhu, Siyuan Tang, Roberto R. Molinari, Dan Hou
  • Patent number: 8332538
    Abstract: An application programming interface and related system is presented for a middleware communication space that provides asynchronous message delivery service for partially connected mobile ad hoc networks. Embodiments of the present invention use mobile devices to bridge separated islands of networks and store and propagate messages. The system and software architecture supports methods for messaging caching, transferring and routing. More specifically, embodiments provide methods and systems that extend a communication space concept into a distributed environment and combine it with the standard Web Services technologies, i.e, SOAP, and WS series protocols. The communication space provides an extension of Web Services to mobile ad hoc networks and provides asynchronous message caching, transferring and routing.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: December 11, 2012
    Assignee: Microsoft Corporation
    Inventors: Kun Tan, Qian Zhang, Wenwu Zhu
  • Publication number: 20120294510
    Abstract: A depth construction module is described that receives depth images provided by two or more depth capture units. Each depth capture unit generates its depth image using a structured light technique, that is, by projecting a pattern onto an object and receiving a captured image in response thereto. The depth construction module then identifies at least one deficient portion in at least one depth image that has been received, which may be attributed to overlapping projected patterns that impinge the object. The depth construction module then uses a multi-view reconstruction technique, such as a plane sweeping technique, to supply depth information for the deficient portion. In another mode, a multi-view reconstruction technique can be used to produce an entire depth scene based on captured images received from the depth capture units, that is, without first identifying deficient portions in the depth images.
    Type: Application
    Filed: May 16, 2011
    Publication date: November 22, 2012
    Applicant: Microsoft Corporation
    Inventors: Cha Zhang, Wenwu Zhu, Zhengyou Zhang, Philip A. Chou
  • Patent number: 8228927
    Abstract: A method and system is presented for path discovery and asynchronous message transfer in a partially connected middleware communication space comprising mobile ad hoc networks. Embodiments of the present invention use mobile devices to bridge separated islands of networks and store and propagate messages. The system and software architecture supports methods for routing, messaging caching, and transferring. More specifically, embodiments provide methods and systems that extend a communication space concept into a distributed environment and combine it with the standard Web Services technologies, i.e., SOAP, and WS series protocols. The communication space provides an extension of Web Services to mobile ad hoc networks and provides asynchronous message caching, transferring and routing.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: July 24, 2012
    Assignee: Microsoft Corporation
    Inventors: Kun Tan, Wenwu Zhu, Qian Zhang
  • Publication number: 20120131178
    Abstract: Techniques for configuring and operating a multimedia aware cloud, particularly configured for mobile device computing, are described herein. In some instances, clusters of servers are organized for general computing, graphic computing and data storage. A load balancing server may be configured to: identify multimedia types currently being processed within the multimedia edge cloud; determine desired quality of service levels for each identified multimedia type; evaluate individual abilities of devices communicating with the multimedia edge cloud; and assess bandwidth of each network over which the multimedia edge cloud communicates with a mobile device. With that information, multimedia data may be adapted accordingly, to result in an acceptable quality of service level when delivered to a specific mobile device. In one example of the techniques, graphic computing server clusters may be configured to process workload using a configuration that includes elements of both parallel and serial computing.
    Type: Application
    Filed: November 24, 2010
    Publication date: May 24, 2012
    Applicant: Microsoft Corporation
    Inventors: Wenwu Zhu, Lie Liu, Chong Luo
  • Publication number: 20100241684
    Abstract: Architectures for supporting diverse client types in transactional systems are provided. These architectures provide computer-based systems that include any number of processors. These systems may also include computer-readable storage media that provide a transaction assistant module. In turn, the transaction assistant module may include an adaptive presentation layer and a shared logic layer. The adaptive presentation layer includes presentation components that correspond respectively to various types of client devices. The shared logic layer includes back-end components that are shared between the client devices to perform common functions on behalf of the client devices.
    Type: Application
    Filed: March 17, 2009
    Publication date: September 23, 2010
    Applicant: Microsoft Corporation
    Inventors: Yu Cheng, Kaifeng Yao, Wenwu Zhu
  • Patent number: 7769866
    Abstract: A middle layer network protocol enhancement, virtual connectivity (VC) makes the network attachment point changes of local and remote peers transparent to applications that use network services. A virtual connectivity module local to each peer translates communication connection parameters from apparent to real and vice versa, as well as sending and receiving secure connection updates directly to and from peers. Unlike Mobile IP, no routing infrastructure modifications are required. A subscribe-notify service provides connection update notifications when direct peer-to-peer connection updates are not possible, for example, when two communicating peers move simultaneously or when the moving peer is communicating with a peer behind network address translation (NAT). Methods for detecting these conditions are disclosed, as is a virtual connectivity protocol and virtual connectivity module architecture.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: August 3, 2010
    Assignee: Microsoft Corporation
    Inventors: Chuanxiong Guo, Jun Yuan, Qian Zhang, Wenwu Zhu
  • Patent number: 7702932
    Abstract: A power management technique for a network including a plurality of computing devices. The power management technique includes identifying an order in which one or more devices of the plurality of computing devices can transmit data within the prescribed time period. In one aspect, the number of wakeups are reduced for the computing devices within the network by increasing a number of adjacent channel time allocation periods within a prescribed time period that share a common computing device. In one aspect, the network can be based on Time Division Multiple Access (TDMA).
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: April 20, 2010
    Assignee: Microsoft Corporation
    Inventors: Zihua Guo, Richard Yuqi Yao, Wenwu Zhu, Xin Wang
  • Patent number: 7698460
    Abstract: A peer-to-peer (P2P) probing/network quality of service (QoS) analysis system utilizes a UDP-based probing tool for determining latency, bandwidth, and packet loss ratio between peers in a network. The probing tool enables network QoS probing between peers that connect through a network address translator. The list of peers to probe is provided by a connection server based on prior probe results and an estimate of the network condition. The list includes those peers which are predicted to have the best QoS with the requesting peer. Once the list is obtained, the requesting peer probes the actual QoS to each peer on the list, and returns these results to the connection server. P2P probing in parallel using a modified packet-pair scheme is utilized. If anomalous results are obtained, a hop-by-hop probing scheme is utilized to determine the QoS of each link. In such a scheme, differential destination measurement is utilized.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: April 13, 2010
    Assignee: Microsoft Corporation
    Inventors: Qian Zhang, Wenwu Zhu, XinYan Zhang, Yongqiang Xiong
  • Publication number: 20100086080
    Abstract: Embodiments of quasi-orthogonal space-time encoder, decoder and method for space-time encoding and decoding orthogonal frequency division multiplexed (OFDM) signals in a multiple-input multiple-output (MDMO) system are generally described herein. Other embodiments may be described and claimed. In some embodiments, a method of decoding received multicarrier signals comprises deriving objective functions from a received signal matrix, minimizing the objective functions to generate decoded hard bits, and solving a set of linear equations of the objective functions to generate decoded soft bits.
    Type: Application
    Filed: October 24, 2006
    Publication date: April 8, 2010
    Inventors: Wenwu Zhu, May Wu, Xiang-Gen Xia
  • Patent number: 7669120
    Abstract: A method and system for encoding a mark-up language document is provided, in which, the structure of the mark-up language document is condensed by removing those parts of the structure that are fixed, and by expressing the variable parts of the structure in terms of whether or how often they occur. A template that specifies which parts of the structure are fixed and which parts are variable may be provided to both the device that is transmitting the mark-up language document and the device that is receiving the mark-up language document.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: February 23, 2010
    Assignee: Microsoft Corporation
    Inventors: Hongbin Liao, Qian Zhang, Wenwu Zhu
  • Patent number: 7636380
    Abstract: Orthogonal pulse polarity modulation involves wireless communication in which the polarity of modulating pulses are set responsive to positive and negative character values of a corresponding code sequence. In a described implementation, data is converted to chip waveforms, spectrum lines are removed, and pulses are appropriately shaped. For example, a data bit stream may be converted into chip waveforms using a bit stream-to-symbol segmenter, a symbol-to-code sequence mapper, and a code sequence-to-chip waveform transformer. The polarities of respective individual chips in a given chip waveform match the signs of respective individual characters in a corresponding code sequence.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: December 22, 2009
    Assignee: Microsoft Corporation
    Inventors: Richard Yuqi Yao, Zihua Guo, Weiyu Xu, Wenwu Zhu
  • Patent number: 7602707
    Abstract: A method provides differentiated quality of service (QoS) by providing adaptive updates to media access control (MAC) layer parameters on a distributed basis. The method includes calculating a failure probability for a transmission over the network, determining a target value for determining a contention window according to a mapped function of the failure probability, and altering the contention window according to a scaling function of the target value. The mapped function and the scaling can provide QoS differentiation. A wireless device ensures fairness in a wireless time slotted network and includes a network interface card (NIC), a network driver interface, a network monitor, a statistics engine, and an adaptive parameter engine for determining a target value for determining a contention window according to a mapped function of the one or more probabilities to enable an alteration of the contention window and provide new parameters for the MAC layer.
    Type: Grant
    Filed: January 12, 2005
    Date of Patent: October 13, 2009
    Assignee: Microsoft Corporation
    Inventors: Zihua Guo, Wenwu Zhu, Qian Zhang, Jun Zhao
  • Patent number: 7593423
    Abstract: A method provides differentiated quality of service (QoS) by providing adaptive updates to media access control (MAC) layer parameters on a distributed basis. The method includes calculating a failure probability for a transmission over the network, determining a target value for determining a contention window according to a mapped function of the failure probability, and altering the contention window according to a scaling function of the target value. The mapped function and the scaling can provide QoS differentiation. A wireless device ensures fairness in a wireless time slotted network and includes a network interface card (NIC), a network driver interface, a network monitor, a statistics engine, and an adaptive parameter engine for determining a target value for determining a contention window according to a mapped function of the one or more probabilities to enable an alteration of the contention window and provide new parameters for the MAC layer.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: September 22, 2009
    Assignee: Microsoft Corporation
    Inventors: Zihua Guo, Wenwu Zhu, Qian Zhang, Jun Zhao
  • Patent number: 7581010
    Abstract: A middle layer network protocol enhancement, virtual connectivity (VC) makes the network attachment point changes of local and remote peers transparent to applications that use network services. A virtual connectivity module local to each peer translates communication connection parameters from apparent to real and vice versa, as well as sending and receiving secure connection updates directly to and from peers. Unlike Mobile IP, no routing infrastructure modifications are required. A subscribe-notify service provides connection update notifications when direct peer-to-peer connection updates are not possible, for example, when two communicating peers move simultaneously or when the moving peer is communicating with a peer behind network address translation (NAT). Methods for detecting these conditions are disclosed, as is a virtual connectivity protocol and virtual connectivity module architecture.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: August 25, 2009
    Assignee: Microsoft Corporation
    Inventors: Chuanxiong Guo, Jun Yuan, Qian Zhang, Wenwu Zhu
  • Patent number: 7574726
    Abstract: A resource allocation of multiple compressed AV streams delivered over the Internet is disclosed that achieves end-to-end optimal quality through a multimedia streaming TCP-friendly transport (MSTFP) protocol that adaptively estimates the network bandwidth while smoothing the sending rate. Resources allocated dynamically according to a media encoding distortion and network degradation algorithm. A scheme is also disclosed for dynamically estimating the available network bandwidth for streaming of objects, such as MPEG4 multiple video objects, in conjunction with the MSTFP protocol. The scheme can account for packet-loss rates to minimize end-to-end distortion for media delivery.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: August 11, 2009
    Assignee: Microsoft Corporation
    Inventors: Qian Zhang, Ya-Qin Zhang, Wenwu Zhu
  • Patent number: 7558244
    Abstract: An implementation of a technology, described herein, for transmitting compressed network transport-layer-protocol headers in a speedy, efficient, inferentially synchronized, and robust manner. An implementation, described herein, models the transmission of compressed headers to the congestion procedure of the network transport-layer protocol (e.g., TCP's). Doing so, the sender of the compressed headers can infer whether the receiver correctly received them. Unlike the slow direct synchronization employed by conventional schemes, this implementation of the present claimed invention inferentially synchronizes by modeling after the congestion procedure of the network transport-layer protocol. This is inherently faster than direct synchronization. Since the implementation performs well over both noiseless and noisy links, it is particularly suited to use over wireless communications channels. This abstract itself is not intended to limit the scope of this patent.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: July 7, 2009
    Assignee: Microsoft Corporation
    Inventors: HongBin Liao, Qian Zhang, Wenwu Zhu, Ya-Qin Zhang
  • Patent number: 7558875
    Abstract: Overlay network peers may be grouped so that each peer in a peer group has a similar transport network proximity measure with respect to the peers in other peer groups. A first set of transport network distances may include distances between a peer group and peer group neighbors of the peer group. A second set of distances may include distances between a peer and the peer group neighbors of the peer group. The peer may decide to join the peer group if the first set of distances is near to the second set. A first peer group may query a second peer group for the second peer group's neighboring peer groups. The distance between the first peer group and each of the second peer group's neighbors may be measured. Overlay network connections may be established between the first peer group and the closest of the second peer group's neighbors.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: July 7, 2009
    Assignee: Microsoft Corporation
    Inventors: Xin Yan Zhang, Qian Zhang, Yongqiang Xiong, Wenwu Zhu
  • Patent number: 7559078
    Abstract: A resource allocation of multiple compressed AV streams delivered over the Internet is disclosed that achieves end-to-end optimal quality through a multimedia streaming TCP-friendly transport (MSTFP) protocol that adaptively estimates the network bandwidth while smoothing the sending rate. Resources allocated dynamically according to a media encoding distortion and network degradation algorithm. A scheme is also disclosed for dynamically estimating the available network bandwidth for streaming of objects, such as MPEG4 multiple video objects, in conjunction with the MSTFP protocol. The scheme can account for packet-loss rates to minimize end-to-end distortion for media delivery.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: July 7, 2009
    Assignee: Microsoft Corporation
    Inventors: Qian Zhang, Ya-Qin Zhang, Wenwu Zhu