Patents by Inventor Kaichuan He

Kaichuan He 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).

  • Patent number: 10657696
    Abstract: An interactive avatar display system provides a computer-generated view of a virtual space including an avatar that moves in the virtual space in response to movements of the user that are sensed by sensors. The number of sensed movements is less than the number of degrees of freedom of avatar movement. The interactive avatar display system computes an array of accelerations to apply to movable body parts of the avatar and computes the array of accelerations by solving equations of motions from masses of the movable body parts and an array of forces computed from an array of inverse dynamics force values for the movable body parts and one or both of an array of balance control force values or an array of locomotion control force values, taking into account a set of constraints for the avatar, and possible also environmental objects in the virtual space.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: May 19, 2020
    Assignee: DeepMotion, Inc.
    Inventors: Weihua Jin, Kaichuan He
  • Publication number: 20180165864
    Abstract: An interactive avatar display system provides a computer-generated view of a virtual space including an avatar that moves in the virtual space in response to movements of the user that are sensed by sensors. The number of sensed movements is less than the number of degrees of freedom of avatar movement. The interactive avatar display system computes an array of accelerations to apply to movable body parts of the avatar and computes the array of accelerations by solving equations of motions from masses of the movable body parts and an array of forces computed from an array of inverse dynamics force values for the movable body parts and one or both of an array of balance control force values or an array of locomotion control force values, taking into account a set of constraints for the avatar, and possible also environmental objects in the virtual space.
    Type: Application
    Filed: December 13, 2017
    Publication date: June 14, 2018
    Inventors: Weihua Jin, Kaichuan He
  • Patent number: 9457277
    Abstract: A method has steps tracking states for objects in a virtual world by software (SW) executed by a processor from a non-transitory physical medium, noting that physics simulation is necessary to determine a change in display for a particular object, noting characteristics of the particular object, selecting from a plurality of modules, a specific physics simulation module optimized for objects having the characteristics of the particular object, and applying the physics simulation module selected to determine display change for the particular object.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: October 4, 2016
    Assignee: Roblox Corporation
    Inventors: Tim Loduha, Kevin Kaichuan He, David Baszucki
  • Patent number: 9106963
    Abstract: A method includes steps of opening a link between a player's appliance and a network-connected server providing games, selecting a game to play by the player through an interface provided to the player's appliance by the server, transmitting virtual world data by the server to the player's appliance, along with a version identification, storing the virtual world data and associated version identification in a cache at the player's appliance, playing the game by the player using the player's appliance, and suspending play of the game by the player.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: August 11, 2015
    Assignee: Roblox Corporation
    Inventors: Kevin Kaichuan He, Semen Kozlov
  • Publication number: 20140354694
    Abstract: A method has steps tracking states for objects in a virtual world by software (SW) executed by a processor from a non-transitory physical medium, noting that physics simulation is necessary to determine a change in display for a particular object, noting characteristics of the particular object, selecting from a plurality of modules, a specific physics simulation module optimized for objects having the characteristics of the particular object, and applying the physics simulation module selected to determine display change for the particular object.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 4, 2014
    Inventors: Tim Loduha, Kevin Kaichuan He, David Baszucki
  • Patent number: 8904513
    Abstract: The method can be implemented on a processor executing software instructions stored in memory. In one embodiment of the invention, the method includes receiving an Ethernet frame, wherein the Ethernet frame comprises a Transmission Control Protocol (TCP) header, wherein the TCP header comprises a TCP header length value. When the Ethernet frame is received, the TCP header length value is compared to a predetermined value.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: December 2, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Kenneth M. Rose, Venkateshwar R. Pullela, David S. Walker, Kevin C. Wong, Kaichuan He, Yu Kwong Ng
  • Publication number: 20140213369
    Abstract: A method includes steps of opening a link between a player's appliance and a network-connected server providing games, selecting a game to play by the player through an interface provided to the player's appliance by the server, transmitting virtual world data by the server to the player's appliance, along with a version identification, storing the virtual world data and associated version identification in a cache at the player's appliance, playing the game by the player using the player's appliance, and suspending play of the game by the player.
    Type: Application
    Filed: January 30, 2013
    Publication date: July 31, 2014
    Inventors: Kevin Kaichuan He, Semen Kozlov
  • Publication number: 20140081612
    Abstract: A method for determining forces on a rigid body at least partially immersed in a fluid medium includes steps for (a) dividing the rigid body into a number of cells; (b) calculating buoyancy force on each rigid body cell separately, taking into account properties of the fluid medium, situation as to submersion of each cell, and position of each cell in the rigid body; and (c) integrating the separate buoyancy forces to determine the net force vector and any torque on the rigid body.
    Type: Application
    Filed: September 17, 2012
    Publication date: March 20, 2014
    Inventors: Daniel Jonathan Ignatoff, Semen M. Kozlov, Kevin Kaichuan He, Tyler Randall Mullen, David Baszucki
  • Patent number: 8296452
    Abstract: Disclosed is a method and apparatus for checking link layer protocol frames such as Ethernet frames. The method can be implemented on a processor executing software instructions stored in memory. In one embodiment of the invention, the method includes receiving an Ethernet frame, and counting data bytes of the Ethernet frame to generate a total number of counted bytes. The total number of counted bytes can be used to calculate a data length of a datagram of the Ethernet frame. Once calculated, the datagram data length can be compared to a predetermined value. If the datagram length does not fall within an acceptable range of the predetermined value, the Ethernet frame may be dropped so that the Ethernet frame does not reach its final destination.
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: October 23, 2012
    Assignee: Cisco Technology, Inc.
    Inventors: Kenneth M. Rose, Venkateshwar R. Pullela, David S. Walker, Kevin C. Wong, Kaichuan He, Yu Kwong Ng
  • Patent number: 8261312
    Abstract: A streaming file is constructed with a file header section that includes a file header object, a media data file descriptor, and an index descriptor. A hinting index section includes a first level hinting index with a linear organization corresponding to timing tick key values. A second level hinting index has a non-sequential organization corresponding to such timing tick key values. A special mark in the second level hinting index indicates that the first level hinting index must be consulted for a next timing tick key value. Such mark is positioned in the last of a sequential run of timing tick key values associated with its entries. A data section that can be put in a separate file, and it accepts media data blocks associated in sequential runs of timing tick key values as its entries. Thus hinting is provided for a non-sequential media data file.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: September 4, 2012
    Assignee: Cisco Technology, Inc.
    Inventors: Jiang Zhu, Kaichuan He, Dipak Punnoran Koroth, Jonathan Lemon, Anil Thomas, Xi Xu
  • Publication number: 20090327215
    Abstract: A streaming file is constructed with a file header section that includes a file header object, a media data file descriptor, and an index descriptor. A hinting index section includes a first level hinting index with a linear organization corresponding to timing tick key values. A second level hinting index has a non-sequential organization corresponding to such timing tick key values. A special mark in the second level hinting index indicates that the first level hinting index must be consulted for a next timing tick key value. Such mark is positioned in the last of a sequential run of timing tick key values associated with its entries. A data section that can be put in a separate file, and it accepts media data blocks associated in sequential runs of timing tick key values as its entries. Thus hinting is provided for a non-sequential media data file.
    Type: Application
    Filed: June 27, 2008
    Publication date: December 31, 2009
    Inventors: Jiang Zhu, Kaichuan He, Dipak Punnoran Koroth, Jonathan Lemon, Anil Thomas, Xi Xu
  • Patent number: 6886118
    Abstract: The method can be implemented on a processor executing software instructions stored in memory. In one embodiment of the invention, the method includes receiving an Ethernet frame, wherein the Ethernet frame comprises an IP datagram, wherein the IP datagram comprises an IP header and an IP payload, wherein the IP payload comprises a User Datagram Protocol (UDP) header. When the Ethernet frame is received, a length in bytes of the IP payload of the IP datagram is calculated.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: April 26, 2005
    Assignee: Cisco Technology, Inc.
    Inventors: Kenneth M. Rose, Venkateshwar R. Pullela, David S. Walker, Kevin C. Wong, Kaichuan He, Yu Kwong Ng
  • Publication number: 20040205228
    Abstract: Disclosed is a method and apparatus for checking link layer protocol frames such as Ethernet frames. The method can be implemented on a processor executing software instructions stored in memory. In one embodiment of the invention, the method includes receiving an Ethernet frame, and counting data bytes of the Ethernet frame to generate a total number of counted bytes. The total number of counted bytes can be used to calculate a data length of a datagram of the Ethernet frame. Once calculated, the datagram data length can be compared to a predetermined value. If the datagram length does not fall within an acceptable range of the predetermined value, the Ethernet frame may be dropped so that the Ethernet frame does not reach its final destination.
    Type: Application
    Filed: March 6, 2003
    Publication date: October 14, 2004
    Inventors: Kenneth M. Rose, Venkateshwar R. Pullela, David S. Walker, Kevin C. Wong, Kaichuan He, Yu Kwong Ng
  • Publication number: 20040177275
    Abstract: The method can be implemented on a processor executing software instructions stored in memory. In one embodiment of the invention, the method includes receiving an Ethernet frame, wherein the Ethernet frame comprises a Transmission Control Protocol (TCP) header, wherein the TCP header comprises a TCP header length value. When the Ethernet frame is received, the TCP header length value is compared to a predetermined value.
    Type: Application
    Filed: April 4, 2003
    Publication date: September 9, 2004
    Inventors: Kenneth M. Rose, Venkateshwar R. Pullela, David S. Walker, Kevin C. Wong, Kaichuan He, Yu Kwong Ng
  • Publication number: 20040177106
    Abstract: The method can be implemented on a processor executing software instructions stored in memory. In one embodiment of the invention, the method includes receiving an Ethernet frame, wherein the Ethernet frame comprises an IP datagram, wherein the IP datagram comprises an IP header and an IP payload, wherein the IP payload comprises a User Datagram Protocol (UDP) header. When the Ethernet frame is received, a length in bytes of the IP payload of the IP datagram is calculated.
    Type: Application
    Filed: April 4, 2003
    Publication date: September 9, 2004
    Inventors: Kenneth M. Rose, Venkateshwar R. Pullela, David S. Walker, Kevin C. Wong, Kaichuan He, Yu Kwong Ng