Patents by Inventor Andrew Hwang

Andrew Hwang 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: 8397091
    Abstract: In Gigabit Ethernet Systems, the Trusted Platform Module (TPM) is designed to provide trust and security to a platform through integrity measurement, protected storage, and other cryptographic functions. The present invention relates to a TPM-LAN chip with separate TPM and LAN power management. The TPM-LAN chip is designed such a way that power is reduced significantly in different power management modes compared to the legacy devices. This is accomplished by turning off certain clocks during certain operating modes.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: March 12, 2013
    Assignee: Broadcom Corporation
    Inventors: Wei Wang, Andrew Hwang, Thanh Tran
  • Publication number: 20120087249
    Abstract: Switching between communication ports of a notebook is typically accomplished using an off-chip local area network (LAN) switch or an off-chip high speed analog multiplexer. This off-chip component is disadvantageous for several reasons, including: added cost of an additional component; increased overall power consumption because transmit amplitude loss; and reduced cable reach and link performance due to hybrid mismatch and signal distortions. To reduce cost and preserve electrical and networking performance, an integrated switch is provided to multiplex signals of a networking communication chip to multiple network paths.
    Type: Application
    Filed: December 15, 2011
    Publication date: April 12, 2012
    Applicant: Broadcom Corporation
    Inventors: Thanh TRAN, Henry CHOU, Scott DENTON, Andrew HWANG
  • Patent number: 8102842
    Abstract: Switching between communication ports of a notebook is typically accomplished using an off-chip local area network (LAN) switch or an off-chip high speed analog multiplexer. This off-chip component is disadvantageous for several reasons, including: added cost of an additional component; increased overall power consumption because transmit amplitude loss; and reduced cable reach and link performance due to hybrid mismatch and signal distortions. To reduce cost and preserve electrical and networking performance, an integrated switch is provided to multiplex signals of a networking communication chip to multiple network paths.
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: January 24, 2012
    Assignee: Broadcom Corporation
    Inventors: Thanh Tran, Henry Chou, Scott Denton, Andrew Hwang
  • Patent number: 7787453
    Abstract: The present invention is directed to methods and systems for scaling receive protocol processing by allowing the network load from a network adapter to be balanced across multiple CPUs based on RSS and/or QoS traffic classification techniques.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: August 31, 2010
    Assignee: Broadcom Corporation
    Inventors: Thanh Tran, Andrew Hwang, Henry Chou
  • Publication number: 20080034101
    Abstract: The present invention is directed to methods and systems for scaling receive protocol processing by allowing the network load from a network adapter to be balanced across multiple CPUs based on RSS and/or QoS traffic classification techniques.
    Type: Application
    Filed: August 2, 2007
    Publication date: February 7, 2008
    Applicant: Broadcom Corporation
    Inventors: Thanh Tran, Andrew Hwang, Henry Chou
  • Publication number: 20070223519
    Abstract: In Gigibit Ethernet Systems, the Trusted Platform Module (TPM) is designed to provide trust and security to a platform through integrity measurement, protected storage, and other cryptographic functions. The present invention relates to a TPM-LAN chip with separate TPM and LAN power management. The TPM-LAN chip is designed such a way that power is reduced significantly in different power management modes compared to the legacy devices. This is accomplished by turning off certain clocks during certain operating modes.
    Type: Application
    Filed: June 29, 2006
    Publication date: September 27, 2007
    Applicant: Broadcom Corporation
    Inventors: Wei Wang, Andrew Hwang, Thanh Tran
  • Publication number: 20060143344
    Abstract: A network controller having a multiprotocol bus interface adapter coupled between a communication network and a computer bus, the adapter including a predictive time base generator; and a management bus controller adapted to monitor and manage preselected components coupled with one of the communication network and the computer bus. The management bus controller is adapted to employ an Alert Standard Format (ASF) specification protocol, a System Management Bus (SMBus) specification protocol, an Intelligent Platform Management Interface (IPMI) specification protocol, a Simple Network Management Protocol (SNMP), or a combination thereof. The network controller also includes a 10/100/1000BASE-T IEEE Std. 802.
    Type: Application
    Filed: February 16, 2006
    Publication date: June 29, 2006
    Inventors: Steven Lindsay, Andrew Hwang, Andrew Naylor, Michael Asker
  • Publication number: 20050097378
    Abstract: Aspects of the invention for managing power in a single chip device may comprise, an internal finite state machine that, while in a communicating state, determines from within the single chip device whether a power management status is set and/or whether a first power management event is received. If the power management status is set, the finite state machine may transition from the communicating state to a power management event sent state. If the first power management event is received, the finite state machine may transition from the communicating state to a non-communicating state. The first power management event may be a turn off power management event. Furthermore, in instances where the power management status is set, it may be cleared, thereby causing the finite state machine to transition back to the communicating state. One or more power management control registers may be utilized for indicating power management status.
    Type: Application
    Filed: July 8, 2004
    Publication date: May 5, 2005
    Inventor: Andrew Hwang
  • Publication number: 20050060621
    Abstract: Aspects of the invention may be found in a method and system for testing an integrated circuit and may comprise an address selector, data selector and staging register coupled to a signal generator. The address selector may comprise a direct access memory test (DAMT) mode address control input and one or more output address pins coupled to an embedded memory device under test (DUT). The data selector may be coupled to at least one data pin and control pin of the signal generator and may comprise a DAMT mode data control input and at least one data output coupled to embedded memory DUT. A staging register comprising a first output clock rate which is one-quarter (ΒΌ) its input clock rate and matches a DUT burst write frequency may be coupled to an input of the data selector. A DAMT mode control may configure the memory DUT for DAMT operation.
    Type: Application
    Filed: September 13, 2004
    Publication date: March 17, 2005
    Inventors: Jonathan Lee, Xiaogang Zhu, Andrew Hwang
  • Publication number: 20050060587
    Abstract: Certain aspects of a system for controlling power for a network interface controller device may comprise a precision voltage comparator that may instantaneously detect ramp up of a main voltage corresponding to a main voltage source in order to control the network interface controller device. A power monitor may detect when a threshold voltage of the main voltage is reached during the ramp up. A main voltage source switch and an auxiliary voltage source switch may switch an output from an auxiliary voltage to the main voltage source without the switches being simultaneously on. The power monitor may determine whether the main voltage is ramping up in excess of a determined rate and if so, may decrease a rate at which the main voltage ramps up. A current limiter and/or the power monitor may monitor and limit an inrush current caused during main voltage ramp up.
    Type: Application
    Filed: July 8, 2004
    Publication date: March 17, 2005
    Inventors: Andrew Hwang, Augustine Kuo, Michael Hurt