Patents by Inventor Richard Chen

Richard Chen 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: 8942189
    Abstract: A method enables a wireless device (310) to rendezvous with another wireless device (320) through a wireless network (330), where activation schedules of the wireless devices are not synchronized. The method includes determining a number of time units in each cycle of multiple communication cycles, identifying active time units in each cycle during which the first wireless device enters an active mode, and identifying inactive time units in each cycle during which the first wireless device enters an inactive mode. The sum of the active time units and the inactive time units equals the number of time units in each cycle. A first active time unit in each cycle occupies a same position in the cycle as an active time unit in a previous consecutive cycle. Also, a second active time unit in each cycle occupies a different position in the cycle than any active time unit in the previous consecutive cycle.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: January 27, 2015
    Assignee: Koninklijke Philips N.V.
    Inventors: Chun-Ting Chou, Richard Chen
  • Patent number: 8913628
    Abstract: A method (600) for controlling access to a wireless medium in a network. The method comprises dividing an access time to the wireless medium into fixed and repeated time rounds (300), wherein each time round includes a plurality of superframes (310) and each superframe includes a fixed number of time slots (420) (S610); allocating a global beacon period (530) within a time round (S620); and reserving subframes (410) within each superframe (300), wherein master devices can access the wireless medium at least during the reserved subframes (S630).
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: December 16, 2014
    Assignee: Koninklijke Philips N.V.
    Inventors: Maulin D. Patel, Richard Chen
  • Patent number: 8902832
    Abstract: A method (400) for coordinating access to a wireless medium among multiple co-located body area networks (BANs). The method comprises detecting, by a master device of a first BAN, at least one alien BAN using beacons received from at least one co-located BAN, wherein an alien BAN is a BAN having its round start time (RST) misaligned with a RST of the first BAN (S410); recording a RST offset between the first BAN and the at least one alien BAN (S420); based on the RST offset determining which of the first BAN and the at least one alien BAN is an initiator BAN and which is a target BAN (S430); and realigning the RST of the initiator BAN with the RST of the target BAN (S460).
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: December 2, 2014
    Assignee: Koninklijke Philips N.V.
    Inventors: Maulin D. Patel, Richard Chen
  • Patent number: 8897270
    Abstract: Allocation of contiguous blocks of airtime for data or airtime transmission can lead to large maximum service intervals for an application stream. This may result in a large delay bound where large blocks of contiguous MAS blocks other applications from meeting their low-latency requirements. A method and network that overcomes at least the shortcomings of known methods includes transmitting information over a wireless network. This includes the steps of: organizing the superframe into allocation zones; organizing the allocation zones into iso-zones; generating an allocation map; determining a periodic service interval and medium time based on a TSPEC, a delay requirement, and local resource of an application stream; searching for transmission opportunity that accommodates the periodic service interval and the medium time required based on the allocation map; transmitting information in the superframe upon finding transmission opportunity in the searching step.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: November 25, 2014
    Assignee: Koninklijke Philips N.V.
    Inventor: Richard Chen
  • Patent number: 8867498
    Abstract: A method and system for directed beaconing in a superframe structure (100, 310, 320, 330, 340) among devices of different types in a Wireless Personal Area Network (WPAN). A first type device directs a second type device to transmit beacons (345, 346) in a beacon group of first type devices, announcing the second type device's time slot reservations (314). The method includes: making a Distributed Reservation Protocol (DRP) reservation (314) of a time period in every superframe; selecting two consecutive beacon slots (325, 326) and indicating the two consecutive beacon slots (325, 326) as occupied; informing the second type device the timing of the two occupied consecutive beacon slots during the reserved time period (327); transmitting a response (338) in the reserved time period by the second type device; and transmitting two beacons (345, 346) by the second type device in the two occupied consecutive beacon slots.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: October 21, 2014
    Assignee: Koninklijke Philips N.V.
    Inventor: Richard Chen
  • Publication number: 20140200147
    Abstract: This disclosure provides systems and methods for sample processing and data analysis. Sample processing may include nucleic acid sample processing and subsequent sequencing. Some or all of a nucleic acid sample may be sequenced to provide sequence information, which may be stored or otherwise maintained in an electronic storage location. The sequence information may be analyzed with the aid of a computer processor, and the analyzed sequence information may be stored in an electronic storage location that may include a pool or collection of sequence information and analyzed sequence information generated from the nucleic acid sample. Methods and systems of the present disclosure can be used, for example, for the analysis of a nucleic acid sample, for producing one or more libraries, and for producing biomedical reports. Methods and systems of the disclosure can aid in the diagnosis, monitoring, treatment, and prevention of one or more diseases and conditions.
    Type: Application
    Filed: December 27, 2013
    Publication date: July 17, 2014
    Applicant: Personalis, Inc.
    Inventors: Gabor T. Bartha, Gemma Chandratillake, Richard Chen, Sarah Garcia, Hugo Yu Kor Lam, Shujun Luo, Mark R. Pratt, John West
  • Patent number: 8767743
    Abstract: A method for transferring data among devices in a body area network (BAN). The method comprises dividing an access time to a wireless medium of the BAN into at least a contention-based period (510) and a contention-free reservation period (520); allowing devices to transfer data during the contention-based period using a local prioritized contention access (LPCA) mechanism; and allowing only devices having reserved time slots to transfer data during the contention-free reservation period (520).
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: July 1, 2014
    Assignee: Koninklijke Philips N.V.
    Inventors: Maulin D. Patel, Richard Chen
  • Patent number: 8737423
    Abstract: A method (300) for pre-empting data transmissions in a discovery channel. The method comprises scanning the discovery channel to detect at least one data beacon transmitted in beacon slots (230) of a superframe (S310); determining if at least one data beacon was detected (S320); and transmitting a pre-empt beacon if the at least one data beacon was detected (S330).
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: May 27, 2014
    Assignee: Koninklijke Philips N.V.
    Inventor: Richard Chen
  • Publication number: 20140143896
    Abstract: A theft control system may be implemented between a server and a client. The server may provide a certificate which must be periodically renewed. Execution of the certificate may be controlled by a trusted platform module on the client under control of a theft control controller.
    Type: Application
    Filed: November 13, 2013
    Publication date: May 22, 2014
    Inventor: Xiaodong Richard Chen
  • Publication number: 20140119350
    Abstract: A method for transferring data among devices in a body area network (BAN). The method comprises dividing an access time to a wireless medium of the BAN into at least a contention-based period and a contention-free reservation period; allowing devices to transfer data during the contention-based period using a local prioritized contention access (LPCA) mechanism; and allowing only devices having reserved time slots to transfer data during the contention-free reservation period.
    Type: Application
    Filed: January 13, 2014
    Publication date: May 1, 2014
    Applicant: KONINKLIKE PHILIPS N.V.
    Inventors: MAULIN DAHYABHAI PATEL, RICHARD CHEN
  • Publication number: 20140108549
    Abstract: A method of providing updates from a social network to a desktop application is provided. An update is created in an application and if the application has permission, it creates an entry in a recent activity queue. The queue is then subject to analysis to reduce the number of entries in the queue. Subscribers that have permission to receive updates from the publisher and the publishing application then receive updates from the publisher.
    Type: Application
    Filed: December 16, 2013
    Publication date: April 17, 2014
    Applicant: Microsoft Corporation
    Inventors: Oludare Victor Obasanjo, Paul Richard Chen Ming, Deepa Chandramouli, Jiahe Liu, Austin Longino, Robert M. Dolin
  • Publication number: 20140049307
    Abstract: The present disclosure includes systems and methods for sharing bias current. In one embodiment, shared bias current passes through a first level device to one or more second level devices along a bias current path. Multiple active devices may share bias current along a bias current path and process signal along the same or different signal paths. In one embodiment, bias current from one device is split among multiple devices. In another embodiment, bias current is combined from multiple devices into a device. Embodiments may include an interstage circuit along a signal path that improves stability of the circuit.
    Type: Application
    Filed: March 15, 2013
    Publication date: February 20, 2014
    Inventors: Michael R. Lyons, Kenneth V. Buer, Qiang Richard Chen
  • Patent number: 8635248
    Abstract: A method of providing updates from a social network to a desktop application is provided. An update is created in an application and if the application has permission, it creates an entry in a recent activity queue. The queue is then subject to analysis to reduce the number of entries in the queue. Subscribers that have permission to receive updates from the publisher and the publishing application then receive updates from the publisher.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: January 21, 2014
    Assignee: Microsoft Corporation
    Inventors: Oludare Victor Obasanjo, Paul Richard Chen Ming, Deepa Chandramouli, Jiahe Liu, Austin Longino, Robert M. Dolin
  • Patent number: 8630205
    Abstract: A method and apparatus discover hidden wireless devices in a wireless network using a directional antenna system, preventing partitioning of the wireless network. A first wireless device located in a first antenna sector is joined in response to an initial first beacon. First beacons are received from the joined first wireless device during corresponding first beacon periods. At least a second antenna sector is scanned during at least one first beacon period to listen for second beacons from a second wireless device in the second antenna sector, while remaining joined with the first wireless device. The first beacons are not received while the second antenna sector is scanned. The second wireless device is joined in response to an initial second beacon. Second beacons are then received from the joined second wireless device during corresponding second beacon periods, and the first beacons are received during the corresponding first beacon periods.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: January 14, 2014
    Assignee: Koninklijke Philips N.V.
    Inventors: Chun-Ting Chou, Hongqiang Zhai, Richard Chen
  • Patent number: 8606956
    Abstract: A method and system for detecting and reducing data transfer congestion in a wireless access point includes determining a round-trip-time value for an internet control message protocol (ICMP) packet transmitted from a source computing device to a first computing device of a plurality of computing devices via the wireless access point. A data rate for data transmissions from the source computing device is increased to a value no greater than a peak data rate value if the round-trip-time is less than a first threshold value. The data rate is decreased if the round-trip-time value is greater than a second threshold value. Additionally, the peak data rate value may also be decreased if the round-trip-time value is greater than the second threshold value.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: December 10, 2013
    Assignee: Intel Corporation
    Inventors: Justin Lipman, Xiaodong Richard Chen
  • Patent number: 8547920
    Abstract: A method and system for communication device discovery and coordination of data channel selection between a first device and a second device in a Wireless Personal Area Network (WPAN). The method includes transmitting a set of discovery beacon blocks by the first and second devices in a discovery channel using an asynchronous contention based medium access mechanism; scanning the discovery channel by the first and second devices; and coordinating between the first and second devices to select a data channel by exchanging channel selection command frames in the discovery channel using the asynchronous contention based medium access mechanism.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: October 1, 2013
    Assignee: Koninklijke Philips N.V.
    Inventor: Richard Chen
  • Patent number: 8537721
    Abstract: A method (400) for scheduling transmissions of global beacons in a body area network (BAN). The BAN includes master nodes and slave nodes where master nodes are arranged in a tree topology. The method comprises propagating ascending global beacons (AGBs) from leaf nodes to a root node of the tree during an ascending period (S420), wherein an AGB includes at least reservations of time slots during a time round; processing AGBs by the root node to determine time slot occupancy information (S430); propagating descending global beacons (DGBs) from the root node to leaf nodes during a descending period (S440), wherein a DGB includes at least reservations of time slots during the time round; and processing DGBs by master nodes other than the root node to update at least the slot occupancy information included in the DGBs (S450).
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: September 17, 2013
    Assignee: Koninklijke Philips N.V.
    Inventors: Maulin D. Patel, Richard Chen
  • Patent number: 8498250
    Abstract: A communication system includes first and second devices, where a processor of at least one of the first device and the second device is configured to establish a superframe having a superframe duration (Ts) and transmit a beacon by the first device during each of the superframe duration (Ts); scan by the second device all sectors (Nbeam) by scanning each sector for a superframe duration (Ts) and repeating a jump sequence. The jump sequence has a sequence duration (Ttotal) which is equal to a sum of a control duration (Tc) of a control channel and durations of data channels (KTd). The processor is further configured to find the first device by the second device during a find time (Tf), where the control duration (Tc) is greater than the durations of data channels (KTd).
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: July 30, 2013
    Assignee: Koninklijke Philips N.V.
    Inventors: Hong Zhai, Chun-Ting Chou, Richard Chen
  • Patent number: 8493744
    Abstract: A device according to various aspects of the present invention generally includes a surface mount device having a top side, a bottom side, a plurality of sidewalls, and a circuit comprising one or more layers. The device includes a first conductive surface covering a portion of one of the sidewalls for providing an input to the circuit, a second conductive surface covering a portion of one of the sidewalls for providing an output from the circuit, and a third conductive surface covering a portion of one of the sidewalls for providing an electrical ground to the circuit. When the surface mount device is mounted to a provided mounting surface, at least one layer of the circuit is orthogonal to the provided mounting surface.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: July 23, 2013
    Assignee: TDK Corporation
    Inventor: Qiang Richard Chen
  • Patent number: 8446865
    Abstract: A communication system includes first and second devices, where a processor of at least one of the first device and the second device is configured to assign a control channel common to the first device and the second device; exchange control information over the control channel; from the control information, find a data channel available to both the first device and the second device for data communications between the first device and the second device; and communicate data over the data channel between the first device and the second device.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: May 21, 2013
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Hong Zhai, Chun-Ting Chou, Richard Chen