Patents Examined by Tan Trinh
  • Receiver, transceiver circuit, signal transmission method, and signal transmission system
    Patent number: 7389097
    Abstract: A receiver has an offset application circuit for applying a known offset to an input signal, and a decision circuit for comparing the offset-applied input signal with a reference voltage. The level of the input signal is determined based on the known offset and on the result output from the decision circuit. With this configuration, a large common mode voltage can be eliminated in a circuit used for signal transmission.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: June 17, 2008
    Assignee: Fujitsu Limited
    Inventor: Hirotaka Tamura
  • Transferring multiple data units over a wireless communication link
    Patent number: 7376435
    Abstract: A wireless communication system may include a first transceiver that may concurrently keep at least two data units, such as payloads of data pending for transfer to a second transceiver (e.g., a targeted wireless communication device) over a communication link (e.g., a short-range radio link) on a communication channel. To wirelessly communicate with one or more networked wireless communication devices or systems, in one embodiment, the first transceiver is located in a device that may use a local link control and adaptation protocol capable of non-blocking data transfer operations. In one embodiment, pending multiple, data units are buffered to participate in a data streaming session. The transfer of the data units may be monitored to determine whether or not a data transfer operation was successful during the data streaming session.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: May 20, 2008
    Assignee: Intel Corporation
    Inventor: Steven B. McGowan
  • Method and system of efficient spectrum utilization by communications satellites
    Patent number: 7376417
    Abstract: A satellite system includes a plurality of orbit slots having a first orbital and a second orbital slot. A first satellite occupies a first orbital slot and generates a first set of uniform beams. A second satellite located in a second orbital slot generates a second set of uniform beams. A tiling pattern on the face of the Earth has a plurality of cells, with each of the cells having a defined frequency for communication. The first set of beams and the second set of beams are generated according to parameters to avoid interference between them. The parameters may include satellite orbit separations, beam size, multiplicity of band reuse, and ground station received beamwidth.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: May 20, 2008
    Assignee: The DIRECTV Group, Inc.
    Inventors: Thomas M. Walsh, George Hrycenko, William J. Nunan, Adam Stone
  • Communication access apparatus, systems, and methods
    Patent number: 7373111
    Abstract: An apparatus and a system, as well as a method and article, may operate to reserve access for a source device included in a plurality N of source devices to N?1 logical channels accessible by a set of target devices included in the plurality of source devices by creating a static map, wherein N is a positive integer.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: May 13, 2008
    Assignee: Marvell International Ltd.
    Inventor: Vivek G. Gupta
  • Packet transmission acknowledgement in wireless communication system
    Patent number: 7372831
    Abstract: Transmitting an acknowledgement/negative acknowledgement (ACK/NACK) signal in association with a packet transmitted on an uplink is disclosed. The method includes the steps of receiving a packet transmitted from a user equipment, decoding the packet, and determining whether the packet has been successfully decoded, transmitting an ACK signal or a NACK signal, based on the decoding result. Different transmission powers are allocated for the ACK signal and the NACK signal. Alternatively, the transmission power for the NACK signal selectively has an OFF level. The present invention optimizes the transmission powers for downlink ACK/NACK signals in accordance with the required reception quality of each of the ACK/NACK signals, and thus, enables the system to operate efficiently.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: May 13, 2008
    Assignee: LG Electronics Inc.
    Inventors: Bong Hoe Kim, Joon Kui Ahn, Hak Seong Kim, Dong Wook Roh, Dong Youn Seo, Seung Hwan Won
  • Method and apparatus for reducing the effect of EMI on receiver sensitivity in a camera phone
    Patent number: 7373174
    Abstract: A mobile communication device (100) includes a camera module (102) which provides an image stream when the camera module is active. The image stream is used to display images on a display (114) to provide a viewfinder function so that a user of the mobile communication device can see to what the camera is aimed. While the mobile communication device is operating in camera mode, the mobile communication device receives a signal at a radio receiver (104) during a time slot of a time division multiple access frame (110). To prevent the camera module from interfering with the receiver operation, the camera module operation is suspended during the receiver time slot.
    Type: Grant
    Filed: December 31, 2004
    Date of Patent: May 13, 2008
    Assignee: Motorola, Inc.
    Inventors: Ricardo Martinez Perez, Jose F. Rodriguez, Philip A. Schentrup
  • Providing time information
    Patent number: 7373156
    Abstract: A method for providing time information comprises sending time information to at least one communications device and receiving information indicating error in received time information from at least one of said at least one communications device, said error in received time information having been determined in a communications device. In a communications device, first time information from a communications system is received and second time information with respect to an external time frame is determined. Thereafter an error in first time information based on at least said second time information is determined, and information indicating said error in said first time information is sent to said communications system. A communications device, a communications system and a network element for a communications system are also discussed.
    Type: Grant
    Filed: April 12, 2004
    Date of Patent: May 13, 2008
    Assignee: Nokia Corporation
    Inventors: Jussi Ruutu, Ville Ruutu, Jarko Niemenmaa
  • Method and apparatus for sharing content with a remote device using a wireless network
    Patent number: 7369868
    Abstract: The present invention is directed to a method and apparatus for sharing content between a content source device and a remote device. The content source device is connected to a mobile device that communicates with the remote device using a wireless network. The mobile device is used to facilitate the sharing of content with the remote device. The content shared with the remote device is formatted for its use by either the content source device or the mobile device. The present invention is directed to a wireless content sharing system that may include a content source device that supplies the content, a mobile device to facilitate the sharing of content, and a remote device to receive the content.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: May 6, 2008
    Assignee: Sony Ericsson Mobile Communications AB
    Inventors: Gregory A. Dunko, Jonathan C. Lohr
  • Apparatus for self-adjusting power at a wireless station to reduce inter-channel interference
    Patent number: 7369858
    Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: May 6, 2008
    Inventors: Floyd Backes, Gary Vacon, Paul Callahan, William Hawe
  • Power saving method in a mobile communication terminal
    Patent number: 7366131
    Abstract: A power saving method in a mobile communication terminal is provided. The method comprises requesting a change from a first slot cycle index (SCI) used by a mobile communication terminal to a second SCI in a power saving mode; transmitting the second SCI to a base station; and receiving an acknowledgement indicating the adjustment of a slot mode of the base station into a slot mode corresponding to the second SCI.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: April 29, 2008
    Assignee: LG Electronics Inc.
    Inventor: Young Jae Park
  • Program for associating access points with stations using bid techniques
    Patent number: 7366504
    Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: April 29, 2008
    Inventor: Floyd Backes
  • Wireless network apparatus and system
    Patent number: 7366537
    Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: April 29, 2008
    Assignee: Autocell Laboratories, Inc.
    Inventors: Floyd Backes, Gary Vacon, Paul Callahan, William Hawe
  • Access point operating with a smart antenna in a WLAN and associated methods
    Patent number: 7366464
    Abstract: An access point operates in an 802.11 wireless communication network communicating with a client station, and includes a smart antenna for generating directional antenna beams and an omni-directional antenna beam. An antenna steering algorithm scans the directional antenna beams and the omni-directional antenna beam for receiving signals from the client station. The signals received via each scanned antenna beam are measured, and one of the antenna beams is selected based upon the measuring for communicating with the client station. The selected antenna beam is preferably a directional antenna beam. Once the directional antenna beam has been selected, there are several usage rules for exchanging data with the client station. The usage rules are directed to an active state of the access point, which includes a data transmission mode and a data reception mode.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: April 29, 2008
    Assignee: Interdigital Technology Corporation
    Inventors: Ana Lucia Iacono, Arty Chandra, Daniel P. Steinbach, Inhyok Cha, James C. Otto, Kevin P. Johnson, Stanley Gutowski, Kai Liu, Angelo Cuffaro, Janet Stern-Berkowitz
  • Push-to-talk mobile communication terminals
    Patent number: 7366535
    Abstract: Mobile communication terminals comprising a processor unit, a microphone, and a sound processing module for processing sounds captured by the microphone. The processor unit is configured to operate the terminal for a push-to-talk communication with at least one other mobile communication terminal via the communication network, and to operate the terminal during said push-to-talk communication in a latency state or in an active state in which sound captured by the microphone is processed by the sound processing module and sent to the at least one other mobile communication terminal. The processor unit is also configured to change from the latency state to the active state in dependence of the sound captured by the microphone.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: April 29, 2008
    Assignee: Nokia Corporation
    Inventors: Holger Glass, Thomas Göggelmann
  • Group call management through receive/transmit synchronization
    Patent number: 7366532
    Abstract: A method of communicating with a transceiver (120). In one arrangement, the method of communicating with the transceiver can be performed in a systemless group environment. Synchronization information (150) can be received from a mobile transceiver (110) and used to synchronize to the mobile transceiver. The synchronization information can include a timing offset and a frequency offset. Synchronization can be maintained until a predetermined condition is met, for example, a predetermined amount of group inactivity.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: April 29, 2008
    Assignee: Motorola, Inc.
    Inventors: Charbel Khawand, Bin Liu, Jianping W. Miller
  • Mobile communication system and communication method for mobile communication system
    Patent number: 7366538
    Abstract: A mobile communication system performing communication between a plurality of base stations and a mobile station is provided. A user data signal is transmitted with the transmission power controlled from one base station selected among the plurality of base stations. Control data signals are transmitted from the plurality of base stations to the mobile station, with the transmission power controlled in a similar way as the user data signal. The mobile station measures quality of the control data signals on a basis of each base station, and selects a base station based on the measured control data signal quality of each base station.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: April 29, 2008
    Assignee: Fujitsu Limited
    Inventors: Hiroyuki Seki, Yoshinori Tanaka
  • Power control for intermittently active data channels in a wireless communication system
    Patent number: 7363010
    Abstract: Techniques for controlling transmit power for a data transmission sent on multiple data channels, which may be intermittently active, are described. Each data channel is monitored for activity (e.g., based on an error correction code, received signaling information, received block energy, and so on) and deemed to be dormant or not dormant (e.g., based on the amount of elapsed time since activity was last detected on the data channel). A signal quality (SIR) target may be maintained for each non-dormant data channel and updated based on the status of received data blocks for the data channel. A final SIR target, used for power control of the data transmission, may be set to the highest SIR target among the SIR targets for the non-dormant data channels. The final SIR target may also be updated directly based on the status of received data blocks for the non-dormant data channels.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: April 22, 2008
    Assignee: QUALCOMM Incorporated
    Inventors: Hyukjun Oh, Parvathanathan Subrahmanya, Nitin Kasturi
  • Method and system for delivering information to a user
    Patent number: 7362738
    Abstract: A system and method for delivering information to a user (e.g., a worker) comprises equipping a user with a data processing device associated with a portable display. A particular location or context of the user is determined. A display automatically displays information to the user based on at least one of the location of use and the determined context.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: April 22, 2008
    Assignee: Deere & Company
    Inventors: Arnold Albert Taube, Noel Wayne Anderson
  • Wireless routing mechanism for same group and inter-group operations covering both wire network and wireless network
    Patent number: 7362723
    Abstract: The present invention is to provide a wireless routing mechanism by applying a management frame defined in IEEE 802.11 standard to different access points (AP) in a wireless distribution system (WDS) and adding an information element (IE) to the management frame, enabling any AP to be capable of maintaining the integrity of IE based on its own setting and state, determining other APs' operations in WDS based on a received IE and determining whether a physical link (i.e., wireless link) between itself and any of other APs should be established to provide a channel for sending data frames therebetween and automatically establishing a stable, flexible and expansible wireless network topology in a wire network infrastructure based on information contained in a plurality of fields of the IE.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: April 22, 2008
    Assignee: Alpha Networks Inc.
    Inventors: Ming-Wang Guo, Jen-Sheng Huang, Chun-Fu Wang
  • Method and apparatus for wireless communication network operating in compressed mode
    Patent number: 7362741
    Abstract: There is provided a method for use by a user equipment of a Universal Mobile Telecommunication System (UMTS) that supports HSDPA, and a network node in communication with such a user equipment. In an embodiment the method includes, identifying a transmission gap in a downlink transmission from a base station on a first channel. Next the transmission gap is mapped onto a first channel to define a first suspension period encompassing the subframes of the first channel that overlap the transmission gap. The method further includes expanding the first suspension period to define a further period encompassing the subframes of at least one further channel that overlap the first suspension period, and defining a reception suspension period encompassing the further period, and subframes associated with the subframes falling within the further period.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: April 22, 2008
    Assignee: NEC Corporation
    Inventor: Phong Nguyen