Patents by Inventor Chiu Ngo

Chiu Ngo 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: 8891610
    Abstract: A method and system for transmission of video information is provided. A transmitting wireless station performs chroma partitioning of pixels in a video frame into different partitions. The chroma partitioning includes separating luminance (Y) information from chrominance information (CB and CR) of each pixel in a set of spatially correlated pixels. The luminance (Y) information are placed into different partitions. The different partitions into different packets and transmitted over a wireless communication medium to a receiving wireless station. The video information is selectively adapted to a lower data transmission rate with reduced quality degradation by dropping less important partitions.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: November 18, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chiu Ngo, Huai-Rong Shao, Ju-Lan Hsu
  • Patent number: 8891451
    Abstract: Wireless communication channel allocation comprises scanning wireless channels for available wireless channels, wherein each wireless channel has an associated bandwidth, and selecting a channel among the available wireless channels for allocation in wireless communication. Selecting a channel comprises selecting a channel among the available wireless channels such that a maximum number of channels with wider bandwidth than the selected channel remain available after the selection.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: November 18, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Chiu Ngo
  • Patent number: 8885489
    Abstract: Embodiments of the invention provide connection maintenance for communication of audio/video (AV) information. One implementation comprises transmitting audio/video (AV) information as multiple spatial streams from a wireless transmitter to at least one wireless receiver over a wireless link, wherein each spatial stream is targeted to one of multiple AV devices connected to the wireless receiver. Receiving the AV information at the wireless receiver and providing the AV information from each spatial stream to a target AV device connected to the wireless receiver via a communication link, wherein each communication link corresponds to a spatial stream. Detecting connection status information for the wireless link and the communication links. Transmitting the connection status information from the wireless receiver to the wireless transmitter.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: November 11, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Ju-Lan Hsu, Chiu Ngo
  • Patent number: 8868140
    Abstract: A method and system of integrated wireless power and data transmission in a wireless device having a data communication circuit for wireless data communication and a power reception circuit including a charge storage unit. The wireless device is tuned to receive wireless RF signals in a certain frequency band via an antenna. Switching between power reception mode and data communication mode is detected. Received RF signal electrical charge is selectively distributed to the power reception circuit and/or the data communication circuit based on the switching mode and/or strength of the RF signal.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 21, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chunhui Zhu, Chiu Ngo
  • Publication number: 20140293135
    Abstract: A method and system for providing power saving for wired connected devices. The method includes determining a power saving mode by one or more of a first communication device and a second communication device based on one or more of a video content state and one or more un-allocated communication paths. A power saving operation is performed while using a wired link between the first communication device and the second communication device based on the determined power saving mode.
    Type: Application
    Filed: March 31, 2014
    Publication date: October 2, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Huai-Rong Shao, Kyeong-Jae Lee, Chiu Ngo, Jonghwa Kim, Ilju Na
  • Patent number: 8842739
    Abstract: A method and system for communicating video information over wireless channels is provided. Communicating video information involves receiving a frame of video pixel information, partitioning spatially correlated pixels into different partitions and allocating pixel information from the pixel partitions across one or more of said multiple channels based on channel conditions. The allocated pixel information is transmitted on the one or more multiple channels.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: September 23, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Chiu Ngo
  • Publication number: 20140269474
    Abstract: Wireless communication in a wireless network comprises a wireless device communicating power save capability information with a coordinator during a discovery state. A beacon that indicates a configuration state is received by the wireless device. Configuration status information is sent to the coordinator. A configuration request is received by the wireless device from the coordinator for entering or exiting the power save mode.
    Type: Application
    Filed: November 12, 2013
    Publication date: September 18, 2014
    Applicant: Samsung Electronics Company, Ltd.
    Inventors: Chunhui Zhu, Youngsoo Kim, Chiu Ngo
  • Patent number: 8837435
    Abstract: A method and a system for medium access control among devices in a communication system is provided. One implementation involves selecting a contention-based control period for access to a shared communication medium; dividing the contention-based control period into multiple time slots, wherein each slot has a duration that is a function of one or more of the duration of transmission of a request to send (RTS) frame, the duration of transmission of a clear to send (CTS) frame, and an inter frame space (IFS) duration therebetween; and transmitting an RTS frame in a selected slot for allocating a reservation period for accessing the medium for data transmission.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: September 16, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Harkirat Singh, Huai-Rong Shao, Chiu Ngo
  • Patent number: 8826348
    Abstract: An apparatus and method for achieving power saving for a portable device in a wireless network for transmitting audio/video (A/V) data is disclosed. An optimal transmit power level is selected by transmitting multiple probe messages by a portable device at increasing transmit power levels until a response to one of the probe messages is received within a preset allowed response time. A relay node is selected by a portable device for receiving compressed A/V data, uncompressing the compressed A/V data, and transmitting the uncompressed A/V data to an intended receiver.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: September 2, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Xiangping Qin, Harkirat Singh, Huai-Rong Shao, Chiu Ngo
  • Patent number: 8824495
    Abstract: A system and method of reserving bandwidth for disjoint time intervals in a wireless network. Parameters for a disjoint network allocation vector (NAV) define a reservation of a plurality of disjoint time durations during which transmissions by devices other than a target device are deferred. Parameters are sent as a control or data packet over a network and received by the devices associated with the network.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: September 2, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Xiangping Qin, Harkirat Singh, Chiu Ngo
  • Patent number: 8817676
    Abstract: Method and system for directional wireless communication, is provided. One implementation involves directionally transmitting a request for access to a shared wireless communication medium, for directional communication between two wireless stations, and receiving a broadcast response indicating a time period during which the wireless stations may perform directional communication therebetween via the wireless communication medium by setting their antenna directions to each other.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: August 26, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Chiu Ngo
  • Patent number: 8811420
    Abstract: A system and method for wireless communication is disclosed. One aspect of the system includes wireless devices, wherein the wireless devices are capable of establishing a peer-to-peer link by contention-based channel access, and wherein the wireless devices are free to contend any time for accessing a wireless channel. The system may include first and second wireless devices, each of which has a directional antenna system. The first wireless device can determine whether the wireless channel is available for establishing a peer-to-peer link, by repeating sensing whether the channel is idle in different directions each during different slot time periods. The first wireless device can also sequentially transmit multiple requests each in different directions for establishing a link with the second wireless device. The second wireless device can sequentially transmit multiple replies each in different directions for establishing the link with the first wireless device.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: August 19, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Harkirat Singh, Chiu Ngo
  • Patent number: 8797837
    Abstract: Systems and methods for multiplexing signals are disclosed. In one embodiment, the method comprises receiving a first signal having at least a real component, receiving a second signal having at least a real component, generating an in-phase signal based, at least in part, on the first signal, the in-phase signal being real in a first domain, generating a quadrature signal based, at least in part, on the second signal, the quadrature signal being imaginary in the first domain, adding the in-phase signal and the quadrature signal to generate a multiplexed signal, and transmitting the multiplexed signal.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: August 5, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Xiaochen Li, Chiu Ngo
  • Patent number: 8787240
    Abstract: A method and system for communication between mobile stations in a wireless relay enhanced cellular communication system. One implementation involves providing a communication resource allocation for peer-to-peer (P2P) communication between a pair of mobile stations during a P2P enhanced time frame wherein one mobile station serves a role as a transparent relay station (MRS) and another mobile station serves a role as a peer mobile station in the pair; and delivering resource allocation information comprising communication periods and frequency subcarriers to the pair of mobile stations, for the mobile station pair to conduct P2P communication therebetween in the P2P enhanced time frame.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: July 22, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong Liu, Chiu Ngo
  • Patent number: 8780772
    Abstract: A method and system for communication in a wireless enhanced control area network including wireless station nodes is provided. One implementation involves each wireless station node employing a wireless communication protocol for wireless communication of control area network (CAN) messages among the wireless station nodes on a wireless communication medium, wherein each CAN message comprises a content-identified data message or an error message. The wireless communication protocol including a medium access control protocol for controlling access to the wireless communication by the wireless station nodes.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: July 15, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong Liu, Chiu Ngo
  • Patent number: 8774733
    Abstract: A method and system for power saving communication in a wireless network is provided. One implementation involves establishing a wireless bus between two electronic wireless stations, and at a receiving wireless station receiving an incoming wireless signal from a wireless transmitting station via a wireless communication medium, initiating processing the signal for detecting if the signal comprises a wireless bus tracking signal, and if the signal comprises a wireless bus tracking signal, then ceasing further processing of the signal to conserve power.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: July 8, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Chiu Ngo
  • Patent number: 8767631
    Abstract: A method and system for alternate wireless channel selection for uplink and downlink data communication, is provided. In a wireless communication network including a wireless relay node, a communication path is established via the relay node for transmission of the data. A wireless channel is selected as an uplink channel for uplink transmission of the data to the relay node, and an alternate wireless channel is selected as a downlink channel for downlink transmission of the data from the relay node.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: July 1, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Chiu Ngo
  • Patent number: 8755302
    Abstract: A method and system for wireless data communication for peer wireless stations in a network is provided. A pair of peer wireless stations perform discovery on a predefined wireless communication channel to discover each other. Upon peer wireless stations successfully discovering one another, a wireless communication channel is selected to setup a connection between the peer wireless stations for data communication on the selected wireless communication channel. The peer wireless stations then perform connection setup and data communication over the selected wireless channel. In one implementation, the network comprises a wireless local area network (WLAN) for ad-hoc Independent Basic Service Set (IBSS) peer-to-peer communication. Further, the peer wireless stations conduct millimeter wave (mmWave) directional data transmissions between the peer wireless stations on the selected wireless data communication channel.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: June 17, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Ju-Lan Hsu, Chiu Ngo
  • Patent number: 8737190
    Abstract: A method and system for wireless communication in a wireless station including a transceiver with multiple antennas, is provided. In one implementation, the wireless station performs multiple modulation communication by multiplexing different signal carrier modulation formats by antenna cross polarization multiplexing, including mapping the modulation formats to multiple antenna cross polarization branches. Communication power is allocated for each polarization branch by selectively distributing power to each of the polarized antennas based on at least one of: application data rate requirements, communication link quality indication (LQI) and delay spread of cross polarized channels. Data is transmitted utilizing the modulation formats simultaneously at the same frequency over multiple cross polarized antennas.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: May 27, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Su-Khiong Yong, Pengfei Xia, Chiu Ngo
  • Patent number: 8700064
    Abstract: A method and system for device discovery in a wireless network is provided. The device discovery involves directionally transmitting a data unit from a transmitting station over a channel in different directions to emulate omni-directional transmission, receiving the data unit transmissions from different directions at a receiving station, determining the quality of the transmissions received from the different directions, and detecting location information for the transmitting station relative to the receiving station based on the highest quality transmission among the transmissions received from the different directions.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: April 15, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Harkirat Singh, Chiu Ngo