Patents by Inventor Louis Yun

Louis Yun 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: 20110019595
    Abstract: Provided herein is an apparatus for converting a wired sensor system to a wireless sensor system. The apparatus can comprise a relay station comprising at least one antenna and at least one radio. The relay station can be adaptable to be integrated as at least one application specific integrated circuit and further adaptable to convert a wired sensor system into a wireless sensor system. Further provided are systems for converting wired sensor systems into wireless sensor systems and methods of use.
    Type: Application
    Filed: October 23, 2008
    Publication date: January 27, 2011
    Inventors: Surendar Magar, Louis Yun, James Beck, Ali Niknejad
  • Publication number: 20100220723
    Abstract: Multicast capability in a virtual private LAN service (VPLS) is provided in a provider IP/MPLS infrastructure without headend replications by encapsulating a customer data packet to use an established multicast protocol, such as IP multicast. In one example, the customer data packet is encapsulated by an IP header having an IP multicast group address and an Ethernet header. In one implementation, a DNS type mechanism is provided to distribute the IP multicast addresses for VPLS use. Such IP multicast group address can be set aside from an administratively scoped address range. An efficient IP routing algorithm running on the provider's network provides an efficient distribution tree for routing IP-encapsulated customer packet for the VPLS.
    Type: Application
    Filed: February 19, 2010
    Publication date: September 2, 2010
    Applicant: Foundry Networks, Inc.
    Inventors: Rajkumar Jalan, Louis Yun, Ivy Pei-Shan Hsu
  • Patent number: 7698455
    Abstract: Multicast capability in a virtual private LAN service (VPLS) is provided in a provider IP/MPLS infrastructure without headend replications by encapsulating a customer data packet to use an established multicast protocol, such as IP multicast. In one example, the customer data packet is encapsulated by an IP header having an IP multicast group address and an Ethernet header. In one implementation, a DNS type mechanism is provided to distribute the IP multicast addresses for VPLS use. Such IP multicast group address can be set aside from an administratively scoped address range. An efficient IP routing algorithm running on the provider's network provides an efficient distribution tree for routing IP-encapsulated customer packet for the VPLS.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: April 13, 2010
    Assignee: Foundry Networks, Inc.
    Inventors: Rajkumar Jalan, Louis Yun, Ivy Pei-Shan Hsu
  • Publication number: 20090100500
    Abstract: Web-based authentication includes receiving a packet in a network switch having at least one associative store configured to forward packet traffic to a first one or more processors of the switch that are dedicated to cryptographic processing if a destination port of the packet indicates a secure transport protocol, and to a second one or more processors of the switch that are not dedicated to cryptographic processing if the destination port does not indicate a secure transport protocol. If a source of the packet is an authenticated user, the packet is forwarded via an output port of the switch, based on the associative store. If the source is an unauthenticated user, the packet is forwarded to the first one or more processors if the destination port indicates a secure transport protocol, and to the second one or more processors if the destination port does not indicate a secure transport protocol.
    Type: Application
    Filed: October 15, 2007
    Publication date: April 16, 2009
    Applicant: Foundry Networks, Inc.
    Inventors: Yan-Zhe Wang, Sean Hou, Sridhar Devarapalli, Louis Yun
  • Publication number: 20090054737
    Abstract: The present invention provides methods, devices, and systems for wireless physiological sensor patches and systems which incorporate these patches. The systems and methods utilize a structure where the processing is distributed asymmetrically on the two or more types of ASIC chips that are designed to work together. The invention also relates to systems comprising two or more ASIC chips designed for use in physiological sensing wherein the ASIC chips are designed to work together to achieve high wireless link reliability/security, low power dissipation, compactness, low cost and support a variety of sensors for sensing various physiological parameters.
    Type: Application
    Filed: June 5, 2008
    Publication date: February 26, 2009
    Inventors: Surendar Magar, Venkateswara Rao Sattiraju, Ali Niknejad, Louis Yun, James C. Beck
  • Publication number: 20090040107
    Abstract: The present invention provides several smart antenna devices and methods. The devices and methods incorporate a programmable delay element into each RF pathway, which enables smart antennas to receive not only narrow band signals but also ultra-wide band signals at low cost and low power consumption, while in a highly reliable fashion. The devices and methods therefore enable a low complexity smart antenna receiver as part of a highly reliable, low cost and low power sensor network.
    Type: Application
    Filed: June 12, 2008
    Publication date: February 12, 2009
    Applicant: HMicro, Inc.
    Inventors: Louis Yun, Ali M. Niknejad
  • Publication number: 20070015545
    Abstract: A method and apparatus is described for modifying a smart antenna processing strategy determined from a set of signals received at an array of antenna elements of a wireless station, such as a set of weights for processing received antenna signals or forming a set of antenna signals for transmission. The method and apparatus uses the signatures of one or more interferers to produce a modified processing strategy that improves the nulling to the one or more interferers in that, when the modified strategy is applied on the downlink, the transmit signal strength in the direction of the one or more interferers is decreased, and, when the modified strategy is applied on the uplink, the sensitivity to signals from the direction of the one or more interferers is decreased.
    Type: Application
    Filed: September 19, 2006
    Publication date: January 18, 2007
    Inventors: Mark Leifer, Tibor Boros, Mitchell Trott, Louis Yun
  • Publication number: 20050027782
    Abstract: Multicast capability in a virtual private LAN service (VPLS) is provided in a provider IP/MPLS infrastructure without headend replications by encapsulating a customer data packet to use an established multicast protocol, such as IP multicast. In one example, the customer data packet is encapsulated by an IP header having an IP multicast group address and an Ethernet header. In one implementation, a DNS type mechanism is provided to distribute the IP multicast addresses for VPLS use. Such IP multicast group address can be set aside from an administratively scoped address range. An efficient IP routing algorithm running on the provider's network provides an efficient distribution tree for routing IP-encapsulated customer packet for the VPLS.
    Type: Application
    Filed: August 1, 2003
    Publication date: February 3, 2005
    Inventors: Rajkumar Jalan, Louis Yun, Ivy Hsu