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: 8699421
    Abstract: A method and system for wireless communication involves communicating via a control channel the channel occupation information with a discovered wireless station, based on the occupation information, selecting a wireless data channel for a new transmission with the discovered station and reserving bandwidth for the new transmission on the data channel simultaneous with one or more ongoing transmissions on the data channel.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: April 15, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Harkirat Singh, Xiangping Qin, Chiu Ngo
  • Patent number: 8687580
    Abstract: Reducing latencies for content protection in audio/video networks includes reserving a wireless channel for a time period to accommodate control message exchange for content protection in data communication between a wireless transmitter and wireless receiver over a wireless channel. The control message exchange includes wirelessly transmitting a control request message from the transmitter for content protection to the receiver, and transmitting a control response message from the receiver to the transmitter in reply. Reserving the wireless channel includes reserving the wireless channel for a time period that accommodates the control message exchange. The time period includes a single transmission opportunity period for communication on the wireless channel, to reduce latency for the control message exchange between the transmitter and receiver.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: April 1, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Harkirat Singh, Lu Qian, Chiu Ngo
  • Patent number: 8670395
    Abstract: A system and method for priority driven contention in a wireless communication network is disclosed. In one particular embodiment, the system comprises an access point configured to transmit a beacon indicative of available channel resources and a partitioning of a contention period into a plurality of superslots, each superslot associated with a priority, and a station configured to contend for the channel by transmitting, during a superslot associated with the identified priority or a superslot associated with a priority lower than the identified priority, data indicative of an allocation of available channel resources.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: March 11, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Harkirat Singh, Chiu Ngo
  • Patent number: 8665967
    Abstract: A method and a system for bit reorganization and packetization of uncompressed video for transmission over wireless communication channels. The bit stream of the uncompressed video is reorganized according to importance levels of video bits. Then, various unequal protection methods such as encoding are applied to bits at different video importance levels. The reorganized and encoded information is then transmitted from a transmitter to a receiver over a wireless channel. The receiver performs the reverse steps of the transmitter, along with error detection/correction as needed, to recover the uncompressed video information.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: March 4, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chiu Ngo, Huai-Rong Shao, Harkirat Singh
  • Publication number: 20140056211
    Abstract: One embodiment comprises a method for a relay node. The method comprises receiving a first message combination comprising at least one encoded message from a first neighboring node and at least one encoded message from a second neighboring node. The first message combination is decoded based on one or more decoding constraints. Each decoding constraint is based on a transmission power of a neighboring node. A transform is applied to the decoded first message combination to generate a second message combination for broadcast. The second message combination is scaled based on a transmission power of the relay node and a transmission power of a neighboring node. The scaled second message combination is simultaneously broadcast to the first neighboring node and the second neighboring node at a symmetric rate.
    Type: Application
    Filed: August 19, 2013
    Publication date: February 27, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yiwei Song, Huai-Rong Shao, Chiu Ngo
  • Patent number: 8654767
    Abstract: A method and system for audio transmission in a wireless communication system which transmits digital video and digital audio in High-Definition Multimedia Interface (HDMI) format. Position information of audio packets within the HDMI frame is obtained. Digital audio information including the position information is transmitted from a data source device to a data sink device via a wireless communication medium. At the data sink device, an HDMI frame is reconstructed by inserting received audio packets into horizontal and vertical blanking periods of the HDMI frame.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: February 18, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Ju-Lan Hsu, Chiu Ngo
  • Patent number: 8650604
    Abstract: A protocol for wireless transmission of audio/video (A/V) information is provided. The protocol includes sending a request message from a requester to a responder for changing A/V format of an A/V stream transmission between the requester and the responder over a wireless communication medium. In reply to the request message, sending a response message from the responder to the requester for synchronizing the A/V format change. The requester and the responder changing the A/V format of the A/V stream in synchrony.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: February 11, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ju-Lan Hsu, Huai-Rong Shao, Chiu Ngo
  • Patent number: 8630312
    Abstract: A system and method for wireless communication of uncompressed audiovisual data are disclosed. The system includes a first device and a second device wirelessly connectable to each other. The first device transmits a connection control information request from the first device to the second device, wherein the connection control information request includes a request for connection control information of the second device. The connection control information includes at least one of association information, wireless video area network (WVAN) information, device capability information, audio video (A/V) format capability information, bandwidth information, A/V stream start, stop or pause command information, and device control information. The request further includes connection control information of the first device. The second device is configured to transmit a connection control information response from the second device to the first device.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: January 14, 2014
    Assignee: Samsung Electronics Company, Ltd.
    Inventors: Huai-Rong Shao, Harkirat Singh, Xiangping Qin, Chiu Ngo
  • Patent number: 8619652
    Abstract: A system and method for power saving in a wireless network for transmitting uncompressed audio/video (A/V) data disclosed. The method includes an adaptive sleep period scheme in which the current sleep period is computed based at least partly on one or more previous sleep periods. The method also includes entering an inactive state by a coordinator as well as non-coordinator stations in the wireless network in which no beacons are transmitted.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: December 31, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Harkirat Singh, Xiangping Qin, Huai-Rong Shao, Chiu Ngo
  • Patent number: 8611380
    Abstract: Devices and methods for processing wireless high definition video data to be communicated in an uncompressed format over a wireless medium is disclosed. In one embodiment, an encoder includes a first outer encoder that encodes a first portion of a video data stream. A second outer encoder encodes a second portion of the video data stream. A first parser parses the first encoded data stream into first sub-video data streams. A second parser parses the second encoded data stream into second sub-video data streams.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: December 17, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Pengfei Xia, Huaning Niu, Chiu Ngo
  • Patent number: 8605797
    Abstract: A method and system for transmitting uncompressed video over a wireless channel by inputting a frame of pixel information, partitioning spatially correlated pixels into different packets, and transmitting the packets separately over a wireless channel. For robust transmission, error detection data can be generated for each packet and appended to each packet before transmission. A receiver receives the transmitted packets and checks if a received packet is corrupt based on the appended error detection data. For a corrupt packet, the receiver corrects the corrupt pixels using pixel information in other received packets containing neighboring pixels to recover each corrupt pixel in the corrupt packet.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: December 10, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Harkirat Singh, Chiu Ngo
  • Patent number: 8601555
    Abstract: A system and method of providing domain management for content protection and security is disclosed. A secure device domain is generated to allow sharing of content among a plurality of consumer electronic devices. A domain management scheme for authenticating and managing consumer electronics devices in the secure device domain is provided.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: December 3, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Xiangping Qin, Harkirat Singh, Huai-Rong Shao, Chiu Ngo
  • Patent number: 8599773
    Abstract: A method and system for wireless communication in a TV band white space spectrum is provided. A wireless master device keeps track of available wireless communication channels in a white space spectrum. The master device performs an enablement process for enabling a corresponding client device to transmit on a wireless channel. During the enablement process, the master device allows the client device to select a wireless channel for communication from among: a specific operating wireless channel, a subset of the available wireless channels, and all available wireless channels.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: December 3, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ju-Lan Hsu, Harkirat Singh, Su Khiong Yong, Chiu Ngo
  • Patent number: 8582456
    Abstract: A method and system for data communication in a wireless network is provided. A wireless transmitter transmits a locality check message from a wireless transmitter to a wireless receiver over a wireless communication medium. Upon receiving a locality check response message from the wireless receiver, the wireless transmitter marks the locality check response message as valid even if it arrives after an original locality check time period since transmission of the locality check message, but before the end of an adjusted locality check time period. The adjusted locality check time period comprises said original locality check time period adjusted by delays in processing layers at the transmitter and wireless communication medium access delays in data communication between the wireless transmitter and the wireless receiver.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: November 12, 2013
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Harkirat Singh, Ju-Lan Hsu, Su Khiong Yong, Ilju Na, Chiu Ngo
  • Publication number: 20130295861
    Abstract: A method and a system for wireless communication is provided which involves maintaining a data communication module in a power saving mode, detecting channel reservation for communication on a wireless data channel during one or more reserved time periods, and upon successful data channel reservation, transitioning the data communication module from the power saving mode to an active mode for data communication on the reserved data channel. Preferably, the data communication module is transitioned back to the power saving mode upon completion of data communication on the data channel.
    Type: Application
    Filed: July 11, 2013
    Publication date: November 7, 2013
    Inventors: Harkirat Singh, Huai-Rong Shao, Xiangping Qin, Chiu Ngo
  • Patent number: 8570970
    Abstract: Performing distributed contention-free communication channel reservation for wireless communication, is disclosed. One implementation involves providing access to a shared communication channel in a wireless network including multiple wireless stations, by performing distributed channel time reservation for contention-free access to a shared wireless channel by each wireless station, based on a prior successful contention by the wireless station for access to the channel in a wireless network.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: October 29, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ju-Lan Hsu, Huai-Rong Shao, Chiu Ngo
  • Patent number: 8553625
    Abstract: A method and system for performing functions on multiple physical devices, is provided. One implementation involves connecting the physical devices via wireless links, discovering function capabilities of each physical device, wherein a function capability of a physical device comprises a local resource and a virtual resource, and collaborating among the physical devices by wireless communication to provide a set of functions including discovered function capabilities of the collaborating physical devices, wherein each function of the function base can be mapped to one or more of said resources for execution.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: October 8, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Chiu Ngo
  • Patent number: 8537850
    Abstract: A method and system for wireless communication in a wireless network is provided. One implementation involves a requesting wireless station directionally transmitting a request to a coordinator for access to a communication channel; the request packet includes a field indicating the length of the desired reservation period; and upon successfully receiving the request from the wireless station, the coordinator reserving a channel time period for data transmission by the requesting wireless station, and at least pseudo-omni-directionally broadcasting a packet to all wireless stations in the network indicating the reservation. All other stations refrain from contending the channel during the reserved channel time period.
    Type: Grant
    Filed: January 5, 2009
    Date of Patent: September 17, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Xiangping Qin, Chiu Ngo, Harkirat Singh, Huai-Rong Shao
  • Patent number: 8532034
    Abstract: A method and system for coordinating wireless communication of different waveforms in the same frequency band, is provided, the network including multiple wireless stations of different types operating at the same wireless frequency band but at different waveform formats. Channel bandwidth is allocated by scanning all available channels in the frequency band to detect available channels. When the number of detected available channels is not less than the number of wireless station types, then scheduling and transmitting beacon periods for the different types of wireless stations to different available channels, wherein each type of wireless station may have a dedicated available channel period for wireless communication in parallel with other types of wireless stations.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: September 10, 2013
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Huai-Rong Shao, Chiu Ngo
  • Patent number: 8515471
    Abstract: A method and system for sending the same data in multiple directions via directional transmission is disclosed. One embodiment of the invention allows for processing power to be saved by introducing a buffer in the physical (PHY) layer, after some baseband (BB) processing has been performed. In one embodiment of the invention the method comprises receiving data from a MAC layer, performing preliminary processing on data in the PHY layer, storing the preliminarily processed data in a buffer located in the PHY layer, performing secondary processing on the preliminarily processed data, transmitting the secondarily processed data in a first direction, via directional transmission, reading the preliminarily processed data from the buffer, performing secondary processing on the preliminarily processed data, and transmitting the secondarily processed data in a second, third, fourth and so-on direction.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: August 20, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Chiu Ngo