Patents by Inventor Andrew Chung

Andrew 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).

  • Patent number: 7983199
    Abstract: A push-to-talk conference call is conducted over a packet switched network. Participants send a request and receive approval before being allowed to talk during the conference call. In one implementation, only one of the participants is enabled to transmit audio packets while other participants are only allowed to receive audio packets.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: July 19, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Bich Nguyen, Ramanathan Jagadeesan, Rakendu Devdhar, Andrew Chung, Dana Blair, Ilya Slain
  • Patent number: 7701354
    Abstract: A portable alarm transmitter for compliance monitoring detects whether a user is wearing the device. If not, a special alarm signal is sent to the monitoring service provider so that remedial actions can be taken. The alarm transmitter comprises a motion sensor, and an algorithm thereby for detecting whether the alarm device is being worn by the user. The alarm transmitter distinguish between non-compliance (e.g. user has taken off the alarm device) versus other “activities of daily living (ADL) that may appear to be non-compliance events (e.g. sleeping) by incorporating user stimulus and user response.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: April 20, 2010
    Assignee: Standard Telecommunications Ltd.
    Inventor: Andrew Chung
  • Publication number: 20090002152
    Abstract: A portable alarm transmitter for compliance monitoring detects whether a user is wearing the device. If not, a special alarm signal is sent to the monitoring service provider so that remedial actions can be taken. The alarm transmitter comprises a motion sensor, and an algorithm thereby for detecting whether the alarm device is being worn by the user. The alarm transmitter distinguish between non-compliance (e.g. user has taken off the alarm device) versus other “activities of daily living (ADL) that may appear to be non-compliance events (e.g. sleeping) by incorporating user stimulus and user response.
    Type: Application
    Filed: June 28, 2007
    Publication date: January 1, 2009
    Inventor: Andrew Chung
  • Patent number: 7289810
    Abstract: The present invention provides methods and devices using location detection to enable MMMDs to activate and tune to appropriate radios and networks. Some preferred embodiments use radio frequency identification (“RFID”)—based location detection. Preferably, the location detection occurs at or near wireless domain boundaries. Some implementations employ proximity/boundary detection to enhance handoff triggers, which initiate handoff mechanisms between different networks, as an MMMD moves between wireless networks, via a wireless domain portal. Some implementations involve methods and devices for device validation and authorization. An MMMD is provided with local wireless network awareness, which may be used by the MMMD to have the appropriate radio turned on and properly tuned. Accordingly, the methods and devices of the present invention achieve power savings and improved handoff across networks.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: October 30, 2007
    Assignee: Cisco Technology, Inc.
    Inventors: Ramanathan Jagadeesan, Bich Nguyen, Andrew Chung, Arthur G. Howarth
  • Publication number: 20070232322
    Abstract: Gathering location information from a first wireless network to determine whether to anchor a communication session in a second wireless network, a mobile node capable of communicating with both the first wireless network and the second wireless network, includes receiving location information from the first wireless network as the mobile node moves through one or more service areas of the first wireless network. It is determined whether a triggering event occurs. If the triggering event occurs, the location information is stored to determine whether to anchor a session in the second wireless network.
    Type: Application
    Filed: March 28, 2006
    Publication date: October 4, 2007
    Inventors: Ramanathan Jagadeesan, Andrew Chung, Steven Donovan, Mark Grayson, Bich Nguyen, Christopher Pearce
  • Publication number: 20070183364
    Abstract: Anchoring a communication session for a target mobile phone includes identifying a current access node operable to provide the target mobile phone access to a first network of a first network type. Potential access nodes operable to provide a mobile phone access to a second network of a second network type are identified. Whether the communication session can be handed off to a potential access node of the one or more potential access nodes is established. Anchoring of the communication session is initiated in the second network only if the communication session can be handed off to a potential access node of the one or more potential access nodes.
    Type: Application
    Filed: February 3, 2006
    Publication date: August 9, 2007
    Inventors: Steven Donovan, Bich Nguyen, Mark Grayson, Christopher Pearce, Ramanathan Jagadeesan, Andrew Chung
  • Publication number: 20070123238
    Abstract: A method for providing signaling in a network environment is provided that includes receiving, at a mobile station, a new call from a mobility application, the new call including a caller ID segment associated with an existing call for the mobile station. The method further includes evaluating data included in the caller ID segment in order to perform an activity related to the data provided in the caller ID segment.
    Type: Application
    Filed: November 29, 2005
    Publication date: May 31, 2007
    Inventors: Ramanathan Jagadeesan, Bich Nguyen, Andrew Chung, Christopher Pearce
  • Publication number: 20060183478
    Abstract: A method for handling media in a make-before-break handoff between wireless networks is provided that includes communicating with a mobile station to facilitate a session handoff between two call legs of a session. The method also includes identifying a relevant frame of one of the legs, performing a cross correlation operation, generating a delay difference estimate between the two legs, and performing a level difference estimation for the two legs.
    Type: Application
    Filed: February 11, 2005
    Publication date: August 17, 2006
    Inventors: Ramanathan Jagadeesan, Bich Nguyen, Andrew Chung, Michael Ramalho
  • Publication number: 20060128384
    Abstract: The present invention provides methods and devices using location detection to enable MMMDs to activate and tune to appropriate radios and networks. Some preferred embodiments use radio frequency identification (“RFID”)—based location detection. Preferably, the location detection occurs at or near wireless domain boundaries. Some implementations employ proximity/boundary detection to enhance handoff triggers, which initiate handoff mechanisms between different networks, as an MMMD moves between wireless networks, via a wireless domain portal. Some implementations involve methods and devices for device validation and authorization. An MMMD is provided with local wireless network awareness, which may be used by the MMMD to have the appropriate radio turned on and properly tuned. Accordingly, the methods and devices of the present invention achieve power savings and improved handoff across networks.
    Type: Application
    Filed: December 10, 2004
    Publication date: June 15, 2006
    Applicant: Cisco Technology, Inc., A corporation of california
    Inventors: Ramanathan Jagadeesan, Bich Nguyen, Andrew Chung, Arthur Howarth
  • Publication number: 20060121902
    Abstract: A method for facilitating communications between wireless networks is provided that includes communicating with a mobile station and transferring a communication session from a first wireless link to a second wireless link. The mobile station is operable to negotiate a first wireless link with a first wireless network, to establish a communication session with a device using the first wireless link, and to facilitate a session handoff with a second wireless link with the second wireless network using the second wireless interface. The handoff is enabled by associating the first wireless link to the second wireless link.
    Type: Application
    Filed: December 3, 2004
    Publication date: June 8, 2006
    Inventors: Ramanathan Jagadeesan, Bich Nguyen, Andrew Chung, Christopher Pearce
  • Publication number: 20060049580
    Abstract: A card game simulator includes storage of a rules base having programming specific to enforcing rules of a number of discrete card games. The rules base may be internal to a main unit or may be a number of plug-in modules that are received by the main unit. The main unit includes at least one main display that is responsive to a processor to generate visual representations of activities that are to be accessible in common to all player during the enforcement of the rules of a particular card game. In addition to the main unit, there are a number of individual display units that are separately responsive to the processor of the main unit. Each player unit includes a player display that is enabled to generate visual representations of activities specific to a participant to whom the player unit is assigned.
    Type: Application
    Filed: September 9, 2005
    Publication date: March 9, 2006
    Inventor: Andrew Chung
  • Patent number: 4832609
    Abstract: An elastomer pad which applies a compressive force against a flexible printed circuit to bias substantially parallel terminal portions of the printed circuit into electrical contact with substantially parallel terminal portions of a hardboard printed circuit is supported by an arched rib-like member to provide a uniform force at the respective locations of electrical contact. This assures a uniform impedance from one pair of contacting terminal portions to the next pair should the hardboard printed circuit be slightly bowed crosswise of its terminal portions by the compressive force of the elastomer pad.
    Type: Grant
    Filed: November 27, 1987
    Date of Patent: May 23, 1989
    Assignee: Eastman Kodak Company
    Inventor: Andrew Chung