Patents by Inventor Wing-Kuen Chung

Wing-Kuen Chung 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: 20240089203
    Abstract: In one embodiment, a cloud connection appliance features a processor and a non-transitory storage medium. The non-transitory storage medium comprises management control logic, that when executed by the processor, controls registration with a controller adapted to control data traffic between gateway instance and to establish a communication path including a reverse tunnel with the controller. The controller and cloud connection appliance operate in a client-server relationship with the cloud connection appliance operates as a client when establishing the communication path and operates as a server when receiving control information through the reverse tunnel. The reverse tunnel enables the cloud connection appliance to directly receive the control information from the controller despite the cloud connection application lacking a publicly routable Internet Protocol (IP) address.
    Type: Application
    Filed: November 20, 2023
    Publication date: March 14, 2024
    Applicant: Aviatrix Systems, Inc.
    Inventors: Praveen Vannarath, Wing-kuen Chung
  • Patent number: 11824777
    Abstract: In one embodiment, a cloud connection appliance features a processor and a non-transitory storage medium. The non-transitory storage medium comprises management control logic, that when executed by the processor, controls registration with a controller adapted to control data traffic between gateway instance and to establish a communication path including a reverse tunnel with the controller. The controller and cloud connection appliance operate in a client-server relationship with the cloud connection appliance operates as a client when establishing the communication path and operates as a server when receiving control information through the reverse tunnel. The reverse tunnel enables the cloud connection appliance to directly receive the control information from the controller despite the cloud connection application lacking a publicly routable Internet Protocol (IP) address.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: November 21, 2023
    Assignee: Aviatrix Systems, Inc.
    Inventors: Praveen Vannarath, Wing-kuen Chung
  • Patent number: 9674550
    Abstract: A controller controls a camera that produces a sequence of images and that has output coupled to a video encoder. The camera has an operating condition including a field of view and lighting, and one or more imaging parameters. The video encoder encodes images from the camera into codewords. The controller receives one or more encoding properties from the video encoder, and causes adjusting one or more of the imaging parameters based on at least one of the received encoding properties, such that the camera produces additional images of the sequence of images for the video encoder using the adjusted one or more imaging parameters.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: June 6, 2017
    Assignee: Cisco Technology, Inc.
    Inventors: Dihong Tian, Wing-Kuen Chung, Qing Chen
  • Publication number: 20150222760
    Abstract: A Multiservice Access Concentrator (MAC) provides a time limit for a first ringing voltage signal in response to an attempted call. The call is attempted via a voice over packet-data-network system (VOPS), wherein the VOPS comprises voice over Internet Protocol (IP), voice over Frame Relay, voice over Asynchronous Transfer Mode (ATM), and voice over High-level Data Link Control (HDLC) network systems. Generation of the first ringing voltage signal is terminated upon expiration of the time limit. A control message is transmitted to terminate the attempted call, wherein the control message is transmitted via the VOPS.
    Type: Application
    Filed: September 29, 2014
    Publication date: August 6, 2015
    Inventors: Wing-Kuen Chung, Cherng-Daw Hwang, Michael Edric Tasker
  • Publication number: 20150124117
    Abstract: A controller controls a camera that produces a sequence of images and that has output coupled to a video encoder. The camera has an operating condition including a field of view and lighting, and one or more imaging parameters. The video encoder encodes images from the camera into codewords. The controller receives one or more encoding properties from the video encoder, and causes adjusting one or more of the imaging parameters based on at least one of the received encoding properties, such that the camera produces additional images of the sequence of images for the video encoder using the adjusted one or more imaging parameters.
    Type: Application
    Filed: January 14, 2015
    Publication date: May 7, 2015
    Inventors: Dihong Tian, Wing-Kuen Chung, Qing Chen
  • Patent number: 8964056
    Abstract: A controller controls a camera that produces a sequence of images and that has output coupled to a video encoder. The camera has an operating condition including a field of view and lighting, and one or more imaging parameters. The video encoder encodes images from the camera into codewords. The controller receives one or more encoding properties from the video encoder, and causes adjusting one or more of the imaging parameters based on at least one of the received encoding properties, such that the camera produces additional images of the sequence of images for the video encoder using the adjusted one or more imaging parameters.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: February 24, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Dihong Tian, Wing-Kuen Chung, Qing Chen
  • Patent number: 8848695
    Abstract: A Multiservice Access Concentrator (MAC) provides a time limit for a first ringing voltage signal in response to an attempted call. The call is attempted via a voice over packet-data-network system (VOPS), wherein the VOPS comprises voice over Internet Protocol (IP), voice over Frame Relay, voice over Asynchronous Transfer Mode (ATM), and voice over High-level Data Link Control (HDLC) network systems. Generation of the first ringing voltage signal is terminated upon expiration of the time limit. A control message is transmitted to terminate the attempted call, wherein the control message is transmitted via the VOPS.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: September 30, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Wing-Kuen Chung, Cherng-Daw Hwang, Michael Edric Tasker
  • Publication number: 20130058325
    Abstract: A Multiservice Access Concentrator (MAC) provides a time limit for a first ringing voltage signal in response to an attempted call. The call is attempted via a voice over packet-data-network system (VOPS), wherein the VOPS comprises voice over Internet Protocol (IP), voice over Frame Relay, voice over Asynchronous Transfer Mode (ATM), and voice over High-level Data Link Control (HDLC) network systems. Generation of the first ringing voltage signal is terminated upon expiration of the time limit. A control message is transmitted to terminate the attempted call, wherein the control message is transmitted via the VOPS.
    Type: Application
    Filed: February 27, 2012
    Publication date: March 7, 2013
    Applicant: Cisco Technology, Inc.
    Inventors: Wing-Kuen Chung, Cherng-Daw Hwang, Michael Tasker
  • Publication number: 20130002898
    Abstract: A controller controls a camera that produces a sequence of images and that has output coupled to a video encoder. The camera has an operating condition including a field of view and lighting, and one or more imaging parameters. The video encoder encodes images from the camera into codewords. The controller receives one or more encoding properties from the video encoder, and causes adjusting one or more of the imaging parameters based on at least one of the received encoding properties, such that the camera produces additional images of the sequence of images for the video encoder using the adjusted one or more imaging parameters.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 3, 2013
    Inventors: Dihong Tian, Wing-Kuen Chung, Qing Chen
  • Patent number: 8126009
    Abstract: A Multiservice Access Concentrator (MAC) provides a time limit for a first ringing voltage signal in response to an attempted call. The call is attempted via a voice over packet-data-network system (VOPS), wherein the VOPS comprises voice over Internet Protocol (IP), voice over Frame Relay, voice over Asynchronous Transfer Mode (ATM), and voice over High-level Data Link Control (HDLC) network systems. Generation of the first ringing voltage signal is terminated upon expiration of the time limit. A control message is transmitted to terminate the attempted call, wherein the control message is transmitted via the VOPS.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: February 28, 2012
    Assignee: Cisco Technology, Inc.
    Inventors: Wing-Kuen Chung, Cherng-Daw Hwang, Michael Tasker
  • Publication number: 20080175233
    Abstract: A Multiservice Access Concentrator (MAC) provides a time limit for a first ringing voltage signal in response to an attempted call. The call is attempted via a voice over packet-data-network system (VOPS), wherein the VOPS comprises voice over Internet Protocol (IP), voice over Frame Relay, voice over Asynchronous Transfer Mode (ATM), and voice over High-level Data Link Control (HDLC) network systems. Generation of the first ringing voltage signal is terminated upon expiration of the time limit. A control message is transmitted to terminate the attempted call, wherein the control message is transmitted via the VOPS.
    Type: Application
    Filed: December 18, 2007
    Publication date: July 24, 2008
    Inventors: Wing-Kuen Chung, Cherng-Daw Hwang, Michael Tasker
  • Patent number: 7339924
    Abstract: A Multiservice Access Concentrator (MAC) provides a time limit for a first ringing voltage signal in response to an attempted call. The call is attempted via a voice over packet-data-network system (VOPS), wherein the VOPS comprises voice over Internet Protocol (IP), voice over Frame Relay, voice over Asynchronous Transfer Mode (ATM), and voice over High-level Data Link Control (HDLC) network systems. Generation of the first ringing voltage signal is terminated upon expiration of the time limit. A control message is transmitted to terminate the attempted call, wherein the control message is transmitted via the VOPS.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: March 4, 2008
    Assignee: Cisco Technology, Inc.
    Inventors: Wing-Kuen Chung, Cherng-Daw Hwang, Michael Tasker
  • Patent number: 7009962
    Abstract: A method is described that comprises receiving a ringing voltage or tip-ground signal at a first telephone interface. Then, indicating to a control system at an interface that the ringing voltage or tip-ground signal is appearing at the first telephone interface. Then, calling a remote device over a packet data network while maintaining the first telephone interface in an on-hook state. The control system causes the calling in response to the indicating.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: March 7, 2006
    Assignee: Cisco Technology, Inc.
    Inventors: Wing-Kuen Chung, Cherng-Daw Hwang, Michael Tasker
  • Patent number: 6778555
    Abstract: A method for selecting a transmission protocol for a voice over packet system (VOPS) is disclosed. The method comprises generating a first data comprising a plurality of transmission protocols. The method also comprises transmitting the first data to a remote VOPS. Additionally, the method comprises receiving a second data from the remote VOPS. The second data selects at least one of the plurality of transmission protocols.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: August 17, 2004
    Assignee: Cisco Technology, Inc.
    Inventor: Wing-Kuen Chung
  • Patent number: 6763017
    Abstract: A Multiservice Access Concentrator (MAC) receives a called number and matches the number against a destination-pattern index. A logical group of single access telephone numbers are associated to at least one voice port, wherein a logical group of candidate voice ports are formed. The logical group of candidate voice ports are sorted to form a sorted table. The sorting comprises using a prioritized sort criteria, wherein the sort criteria comprises sorting by explicit preference, longest telephone number match metric, local voice ports taking priority over network voice ports, administrative metrics of the network voice ports, time-of-last-use timestamp, and predefined order. Hunting for a voice port among a logical group of candidate voice ports is performed, wherein the logical group of candidate voice ports is distributed across at least one voice over packet-data-network system (VOPS).
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: July 13, 2004
    Assignee: Cisco Technology, Inc.
    Inventors: Patrik Buckingham, Wing-Kuen Chung, Cherng-Daw Hwang, Christine Yu
  • Patent number: 6584108
    Abstract: A Multiservice Access Concentrator (MAC) establishes a representation among at least one signal processing device and multiple logical channels. The signal processing devices comprise digital signal processors (DSPs). The logical channels are placed into a first resource pool. At least one logical channel is moved among at least one other resource pool in response to a request to process at least one call received over a voice over packet-data-network system (VOPS). The VOPS comprises voice over Internet Protocol (IP) network systems, voice over Frame Relay network systems, voice over Asynchronous Transfer Mode (ATM) network systems, and voice over High-level Data Link Control (HDLC) network systems. The other resource pools comprise a second resource pool and a third resource pool. The second resource pool comprises unused logical channels due to fragmentation of a signal processing device, and the third resource pool comprises active logical channels.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: June 24, 2003
    Assignee: Cisco Technology, Inc.
    Inventors: Wing-Kuen Chung, Cherng-Daw Hwang, Michael Tasker