Patents Issued in April 9, 2015
  • Publication number: 20150098444
    Abstract: A large-scale antenna system (LSAS) base station transmits one or more first signals on one or more first channels corresponding to one or more first access terminals associated with the LSAS base station concurrently with nulling one or more second channels corresponding to one or more second access terminals associated with one or more small cells. The first signal(s) is/are transmitted synchronously with the second signal(s) transmitted by the small cell(s).
    Type: Application
    Filed: October 8, 2013
    Publication date: April 9, 2015
    Applicant: ALCATEL-LUCENT USA INC
    Inventors: Thomas L. Marzetta, Hong Yang
  • Publication number: 20150098445
    Abstract: Apparatus and methods are disclosed for a multi-SIM/multi-standby wireless user equipment (UE) configured for tune-away operations enabling simultaneous communication on multiple subscriptions using a shared RF chain while maintaining an ongoing signaling procedure on a primary subscription. The UE performs a signaling procedure with a first network associated with a first subscription, and decodes a downlink channel of the first network during an initial period of a transmission time interval (TTI). If the decoded downlink channel indicates that no data of the first subscription is destined to the UE during the current TTI, the UE tunes away to a second subscription to receive data from a second network associated with the second subscription.
    Type: Application
    Filed: April 17, 2014
    Publication date: April 9, 2015
    Applicant: QUALCOMM Incorporated
    Inventors: Chetan Gopalakrishnan Chakravarthy, Sitaramanjaneyulu Kanamarlapudi
  • Publication number: 20150098446
    Abstract: A mobile communication device is provided with a first wireless module, a second wireless module, and a controller module. The first and second wireless modules perform wireless transmissions and receptions to and from a telecommunication network and an AP using a cellular technology and an SRW technology, respectively. The controller module receives, from the telecommunication network via the first wireless module, at least one RAN rule and information concerning an amount of the data traffic to be offloaded and a level of granularity of the data traffic to be reported for offloading. Also, the controller module receives a first traffic offloading request from the telecommunication network via the first wireless module in response to determining that one of the RAN rule is satisfied, and offloads data traffic indicated by the first traffic offloading request from the telecommunication network to the AP via the second wireless module.
    Type: Application
    Filed: May 19, 2014
    Publication date: April 9, 2015
    Applicant: Acer Incorporated
    Inventor: Shiang-Rung Ye
  • Publication number: 20150098447
    Abstract: The present invention relates to a wireless communication system, and more particularly, to a method and device for performing or supporting selective decoding of a beacon frame in a wireless LAN system. A method of decoding a frame by a station STA in a wireless communication system according to an embodiment of the present invention may include: determining whether to decode each of a first data portion and a second data portion of the frame; and decoding one or more of the first data portion and the second data portion if it is determined that the decoding is performed. Hence, the frame may further include information that is used for the determination by the station STA on whether to decode each of the first data portion and the second data portion, and whether to decode may be determined on the basis of whether to change one or more of the first data portion and the second data portion.
    Type: Application
    Filed: April 15, 2013
    Publication date: April 9, 2015
    Inventors: Jeongki Kim, Jinsam Kwak, Yongho Seok, Seunghee Han, Jinsoo Choi
  • Publication number: 20150098448
    Abstract: A method and apparatus for supporting Radio Link Failure (RLF) reason detection or handover failure reason detection are provided. The method includes detecting the Mobility Robustness Optimization (MRO) problems without RLF reporting in a 3rd Generation (3G) or a 2nd Generation (2G) mobile communication system, the impact on a 3G or a 2G mobile communication system is reduced, and then correct self-optimization is performed to improve the performance of the mobile communication system.
    Type: Application
    Filed: May 6, 2013
    Publication date: April 9, 2015
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Lixiang Xu, Hong Wang, Huarui Liang, Xiaowan Ke
  • Publication number: 20150098449
    Abstract: A method and apparatus are provided for a handover (HO) by a Mobility Management Entity (MME). The method includes receiving, from an evolved Node B (eNB), a handover required message including information indicating whether the HO is for a circuit switched (CS) network or both a CS network and a packet switched (PS) network; splitting a voice bearer from another bearer based on the information; and transmitting a handover command message to the eNB.
    Type: Application
    Filed: December 15, 2014
    Publication date: April 9, 2015
    Inventors: Dong Hee LEE, Tae Sun YEOUM, Paisal VAISHALI
  • Publication number: 20150098450
    Abstract: A method for transmitting a Multi-Protocol Label Switching (MPLS) header from a first nodal point to a second nodal point via a radio communication network; the radio network being a Long Term Evolution (LTE) network, includes: modifying the MPLS header by reducing the size of the MPLS header; and transmitting the modified MPLS header from the first nodal point to the second nodal point via an air interface using a dedicated radio bearer.
    Type: Application
    Filed: December 16, 2014
    Publication date: April 9, 2015
    Inventor: Rainer SCHATZMAYR
  • Publication number: 20150098451
    Abstract: A device with concurrent long-term evolution (LTE) and WLAN uplink transmission includes a WLAN transceiver coupled to an LTE transceiver via an interface. The LTE transceiver includes an LTE Layer-1 module that determines whether an LTE data downlink activity is scheduled for an LTE downlink sub-frame of an LTE time frame, based on information in a first portion of the LTE downlink sub-frame. When determination is made that the LTE data downlink activity is not scheduled for the LTE downlink sub-frame, a message may be communicated through the interface to notify the WLAN transceiver that the second portion of the LTE downlink sub-frame is available for WLAN communication. The LTE time frame includes multiple LTE downlink sub-frames each including the first portion and a second portion. The first portion provides the information that indicates whether the LTE data downlink activity is scheduled for the second portion of that LTE sub-frame.
    Type: Application
    Filed: November 25, 2013
    Publication date: April 9, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Farouk BELGHOUL, Kameswara Rao MEDAPALLI
  • Publication number: 20150098452
    Abstract: A method and apparatus can be configured to perform discontinuous monitoring of a macro cell/MeNB. The method can also include performing monitoring of a small cell/SeNB. The monitoring of the macro cell/MeNB and the monitoring of the small cell/SeNB are performed using a time-division-multiplexing pattern. The monitoring of the macro cell/MeNB has higher priority over the monitoring of the small cell/SeNB.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 9, 2015
    Inventors: Lars DALSGAARD, Petteri LUNDEN, Elena VIRTEJ, Esa MALKAMAKI
  • Publication number: 20150098453
    Abstract: A method and an apparatus of transmitting information in a wireless communication system are provided. The method includes transmitting information based on a first resource index through a first antennae and transmitting the information based on a second resource index through a second antennae.
    Type: Application
    Filed: November 3, 2014
    Publication date: April 9, 2015
    Inventors: Seung Hee HAN, Moon Il LEE, Yeong Hyeon KWON, Jin Sam KWAK, Hyun Woo LEE, Dong Cheol KIM, Jae Hoon CHUNG, Sung Ho MOON, Min Seok NOH, Hyun Soo KO
  • Publication number: 20150098454
    Abstract: This invention relates to a terminal apparatus that can possibly reduce situations in which upstream channel data are punctured by a plurality of response signals. When having received at least one piece of downstream allocation control information corresponding to a second downstream unit band, which is other than a first downstream unit band, of a plurality of unit bands, a control unit (208) maps a plurality of response signals, which are corresponding to the respective ones of the plurality of downstream unit bands established, to a first resource corresponding to the plurality of downstream unit bands established. When having received only the downstream allocation control information corresponding to the first downstream unit band of the plurality of unit bands established, the control unit (208) maps the response signal, which is corresponding to the first downstream unit band, to a second resource corresponding to the first downstream unit band.
    Type: Application
    Filed: December 15, 2014
    Publication date: April 9, 2015
    Inventors: Seigo Nakao, Daichi Imamura
  • Publication number: 20150098455
    Abstract: Disclosed is a Wi-Fi enabled wide area automation system. The system includes an application installed in a handheld wireless communication device for wireless controlling of the at least one appliance by accessing a specific preset hypertext markup language (HTML) page. A microcontroller server communicates with the application to control the at least one appliance. The microcontroller server is configured to operate in a web server mode using TCP/IP stack. A Wi-Fi router connected with the microcontroller server using a wireless local area network (WLAN) enables the microcontroller server to communicate with the handheld wireless communication device. A relay controls the at least one appliance based on a signal from the microcontroller server. A liquid-crystal display (LCD) displays a plurality of statuses of the microcontroller server.
    Type: Application
    Filed: October 9, 2013
    Publication date: April 9, 2015
    Inventor: Darren William Fritsch
  • Publication number: 20150098456
    Abstract: In a communication system, an access point in communication with one or more stations is configured to shift the start of transmission of its downlink data. The access point may automatically shift the transmission of the downlink data in response to receiving downlink data transmitted by a neighboring access point. Shifting the start of transmission of its downlink data permits stations to correctly synchronize to the downlink data. The transmission of data may be synchronized to a synchronization event. In some instances, the access point updates its downlink data with a value corresponding to the shift. The access point may not shift the transmission of the downlink data if the signal strength of the received downlink data is below a threshold.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 9, 2015
    Applicant: Cambium Networks Limited
    Inventors: Ashraf Nusairat, Basman Dahleh
  • Publication number: 20150098457
    Abstract: The disclosure provides a method, apparatus, and computer program product directed towards enabling internet protocol (IP) connectivity across multi-hop wireless networks. A virtual adapter is generated to facilitate creating a virtual link layer between a virtual link layer node and at least one other virtual link layer node. The virtual link layer is then interfaced with an IP layer via the virtual adapter, such that data transmitted over the virtual link layer is accessible to the IP layer via the virtual adapter.
    Type: Application
    Filed: May 21, 2014
    Publication date: April 9, 2015
    Applicant: QUALCOMM Incorporated
    Inventors: Arungundram Chandrasekaran Mahendran, Xiaolong Huang, Ramanathan Viswanathan, Xun Luo
  • Publication number: 20150098458
    Abstract: A wireless local area network system and a wireless network detection and setup method applied thereto are provided. The system includes a base station and at least one wireless device, wherein a first service set identifier is preset in both of the base station and the at least one wireless device. The method includes following steps: the base station and the at least one wireless device use the first service set identifier to enter a first setup mode; in the first setup mode, the base station is automatically connected to the wireless device via at least one connection path and inspects the at least one connection path; the base station and the at least one wireless device end the first setup mode, stop using the first service set identifier, and switch to use a second service set identifier for connection according to an inspection result.
    Type: Application
    Filed: June 17, 2014
    Publication date: April 9, 2015
    Inventors: Yu-Li Shen, Hai-Rong Gu, Bao-Feng Tang
  • Publication number: 20150098459
    Abstract: A scanning method performed by a station (STA) in a wireless LAN system is provided. The method comprises: transmitting a probe request frame; and receiving a short probe response frame from an access point (AP) as a response to the probe request frame. The short probe response frame includes service set ID (SSID) information or compressed SSID information of the AP.
    Type: Application
    Filed: May 8, 2013
    Publication date: April 9, 2015
    Inventors: Jae Seung Lee, Min Ho Cheong, Hyoung Jin Kwon, Hee Jung Yu, Sok Kyu Lee
  • Publication number: 20150098460
    Abstract: A method of group-based location service is proposed. A wireless station initiates a ranging process with a plurality of wireless communications devices in a wireless local area network. The station belongs to a group of wireless stations. The station exchanges measurement frames with the plurality of wireless communications devices during the ranging process. The station then computes a plurality of distances to each of the plurality of wireless communications devices and thereby determining an absolute location of the station. Finally, the station informs the absolute location to a group owner of the group of wireless stations.
    Type: Application
    Filed: October 8, 2014
    Publication date: April 9, 2015
    Inventors: Chao-Chun Wang, Chih-Shi Yee, Ching-Hwa Yu, James-June-Ming Wang
  • Publication number: 20150098461
    Abstract: Some demonstrative embodiments include devices, systems and/or methods of communicating aggregate data units. For example, a device may include a wireless communication unit to communicate an aggregate data unit including a plurality of data units in an increasing order of sequence numbers assigned to the data units, such that a first data unit having a first sequence number always precedes a second data unit having a second sequence number, greater than the first sequence number.
    Type: Application
    Filed: December 17, 2014
    Publication date: April 9, 2015
    Inventors: Solomon B. Trainin, Carlos Cordeiro, Ran Mor, Michael Glik
  • Publication number: 20150098462
    Abstract: An aspect of the subject disclosure may include, for example, receiving a request from a communication device to initiate a communication session in a packet-switched network, obtaining a first name authority pointer record responsive to determining that there is an undesirable operational state in the packet-switched network, wherein the first name authority pointer record comprises a commented out record, obtaining a second name authority pointer record responsive to determining that there is a desirable operation state in the packet-switched network, wherein the second name authority pointer record comprises a record, and initiating the communication session according to one of the first name authority pointer record or the second name authority pointer record. Other embodiments are disclosed.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 9, 2015
    Applicant: AT&T Intellectual Property I, LP
    Inventors: Bernard Ku, Armstrong Soo, Lakshminarashimhan Naidu
  • Publication number: 20150098463
    Abstract: A telecommunication system comprising a computer system comprising a store of representations of telecommunication actions and a store of representations of telecommunication rules. A URL is associated with each of the telecommunication actions. The computer system is configured to, at least in part, command the telecommunication actions. Each telecommunication action is carried out, at least in part, in a manner dependent on at least one of the telecommunication rules. In response to an electronic device accessing a URL associated with one of the telecommunication actions, the telecommunication action is carried out, at least in part, in a manner dependent on at least one of the telecommunication rules. The telecommunication system is configured to change the unique URL to a new unique URL in response to a telecommunication action and associate a different telecommunication action with the new unique URL and/or change a telecommunication action associated with the unique URL.
    Type: Application
    Filed: October 3, 2014
    Publication date: April 9, 2015
    Inventors: Andrew Brandon Davis, Timothy Helstrip
  • Publication number: 20150098464
    Abstract: In embodiments of the disclosed technology, devices and methods for redirecting a telephone call from a public-switched telephone to a packet-switched data network. The phone call is initially received via the public-switched telephone network having a dialed number associated with a hand-held wireless device of a called party. Upon initialization of the phone call, a route is determined from the telecommunications switch to the hand-held wireless device of the called party via a packet-switched network. The bandwidth of the packet-switched network is then detected to determine the ability of the network to handle the call. If the packet-switched network is determined to be capable of handling the call, the call is forwarded over the packet-switched data, thereby reducing or eliminating charges for wireless minutes.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 9, 2015
    Applicant: Tel-Tech Systems, Inc.
    Inventors: Meir Cohen, Eli Finkelman, Bryan Moyles
  • Publication number: 20150098465
    Abstract: A rule indicates that data having particular characteristics be automatically routed to a particular destination. When software on a switching device detects a new data stream, it is analyzed to determine whether it has characteristics specified by the rule. If it does, the packet is encapsulated with a special tag, indicating that the packet should be routed to the new destination. Also, an entry is added to a quick-lookup table in the switching device. The entry indicates that future packets in the data stream that have the same source and destination port and address should also be routed to the new destination.
    Type: Application
    Filed: April 22, 2014
    Publication date: April 9, 2015
    Inventors: Pete J. Caputo, II, William Thomas Sella
  • Publication number: 20150098466
    Abstract: A method for communication, includes routing unicast data packets among nodes in a network using respective Layer-3 addresses that are uniquely assigned to each of the nodes. Respective Layer-2 unicast addresses are assigned to the nodes in accordance with an algorithmic mapping of the respective Layer-3 addresses. The unicast data packets are forwarded within subnets of the network using the assigned Layer-2 addresses.
    Type: Application
    Filed: October 6, 2013
    Publication date: April 9, 2015
    Applicant: MELLANOX TECHNOLOGIES LTD.
    Inventors: Zachy Haramaty, Diego Crupnicoff, Freddy Gabbay, Benny Koren, Amiad Marelli, Itamar Rabenstein, Ido Bukspan, Oded Zemer
  • Publication number: 20150098467
    Abstract: Methods, systems and computer readable media for quality of service aware hybrid multicast networks are described. A method can include receiving a request for content from a first receiver and initiating a quality of service aware hybrid tree construction by sending a multicast service level specification message to a first overlay tree manager. The method can also include dividing the tree at the overlay tree manager and communicating with other overlay tree managers in the network. The method can further include computing, at each overlay tree manager, a shortest path tree using a constrained algorithm and sending, from each overlay tree manager, a message to each IP manager in the network requesting that the IP managers construct an IP multicast tree and install the tree on one or more corresponding routers. The method can also include enforcing multicast routes and quality of service on the one or more routers.
    Type: Application
    Filed: October 14, 2013
    Publication date: April 9, 2015
    Inventors: Radu Iorga, Richard Huang, Curtis Santos
  • Publication number: 20150098468
    Abstract: A method of controlling routing of an identifier/locator mapping service that can secure security regarding location information without a scalability problem and that can support mobility is provided. By generating a domain group by forming a plurality of domains in a group, a scalability problem of an ID/LOC mapping table for ID of a flat structure can be solved. An identifier of a communication object existing at each domain is managed using a counting bloom filter, and thus a message overhead of a mapping service can be reduced. Further, by enabling ID/LOC mapping table information to remain within a domain, location information of a communication object can be protected.
    Type: Application
    Filed: May 8, 2014
    Publication date: April 9, 2015
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jung-Im KIM, Tae Ho LEE, Tae Wan YOU, Heeyoung JUNG, Woojik CHUN
  • Publication number: 20150098469
    Abstract: A system and method are provided for performing transmission control protocol segmentation on a server on a chip using coprocessors on the server chip. A system processor manages the TCP/IP stack and prepares a large (64 KB) single chunk of data to be sent out via a network interface on the server on a chip. The system software processes this and calls the interface device driver to send the packet out. The device driver, instead of sending the packet out directly on the interface, calls a coprocessor interface and delivers some metadata about the chunk of data to the interface. The coprocessor segments the chunk of data into a maximum transmission unit size associated with the network interface and increments a sequential number field in the header information of each packet before sending the segments to the network interface.
    Type: Application
    Filed: October 3, 2013
    Publication date: April 9, 2015
    Applicant: APPLIED MICRO CIRCUITS CORPORATION
    Inventors: Keyur Chudgar, Kumar Sankaran
  • Publication number: 20150098470
    Abstract: A system for hierarchical hashing for longest prefix matching may include a memory and a processor. The memory may be configured to store hash tables that include prefixes and associated next hop information, where the hash tables are associated with lengths of the prefixes and at least one of the hash tables is associated with a range of lengths of the prefixes. The processor may be configured to determine a destination address associated with a packet received over a first port, determine next hop information associated with a longest prefix that matches the destination address by searching at least a first hash table of the hash tables that stores a largest number of the prefixes relative to the hash tables, and prepare the packet for transmission over a second port that is determined based at least on the next hop information.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 9, 2015
    Applicant: BROADCOM CORPORATION
    Inventor: Yan SUN
  • Publication number: 20150098471
    Abstract: A method for facilitating traversal of NATs includes a network node communicatively connected to a terminal in a local network that includes a NAT of a particular NAT type providing to a server a request for NAT-related information for NATs of that NAT type in a manner that enables the server to identify the NAT type. The method further includes the network node receiving from the server the NAT-related information for the NATs of that particular NAT type and providing the received information to the terminal, thus enabling the terminal to traverse it's NAT. In this manner, NAT-related information obtained by testing a NAT of a specific NAT type may be re-used for other NATs of the same type, irrespective of the local network in which those NATs are used, and the network node may serve as a proxy for the server for providing NAT-related information to terminals.
    Type: Application
    Filed: December 13, 2012
    Publication date: April 9, 2015
    Applicants: Koninklijke KPN N.V., Nederlandse Organisatie voor Toegepast-Natuurwe- tenschappelijk Onderzoek TNO
    Inventors: Hans Maarten Stokking, Frank Den Hartog, Manuel Herrera Van Der Nood, Bernardus Hillen, Harm Mulder
  • Publication number: 20150098472
    Abstract: A packet originating from, or destined for, a client device is routed according to a routing policy which redirects the packet to a home network of the client device, or to a remote access network on which the client device is present, by obtaining a route and constructing a multi-layer tunnel header, each layer of the multi-layer tunnel header corresponding to a respective node on the route.
    Type: Application
    Filed: June 29, 2012
    Publication date: April 9, 2015
    Inventors: Byung Kyu Choi, Mark W. Fidler
  • Publication number: 20150098473
    Abstract: A method of transferring data in a network is provided. Data is received at a sub-switch of a first bundled switch having a plurality of sub-switches, the sub-switch being configured to only couple to connections external to the first bundled switch. The method also includes transferring the data from the first bundled switch using a multi-lane cable coupled to a second bundled switch, a first end of the multi-lane cable coupled to a sub-switch in the first bundled switch and a second end of the multi-lane cable coupled to at least two sub-switches in the second bundled switch.
    Type: Application
    Filed: December 16, 2014
    Publication date: April 9, 2015
    Applicant: Broadcom Corporation
    Inventor: Ariel HENDEL
  • Publication number: 20150098474
    Abstract: A system and method of managing virtual local area network (VLAN) associations with network ports includes receiving a first packet on a first port of a network switching device, extracting first VLAN identification information from the first packet, determining one or more first VLANs associated with the first port based on the first VLAN identification information, associating the first port with each of the one or more the first VLANs, and transmitting a second packet on the first port when a second VLAN associated with the second packet is included in the one or more first VLANs. In some embodiments, the first packet is received from an end station. In some embodiments, the first packet includes a VLAN identification field selected from a group consisting of a VLAN list field, a VLAN bitmap field, a Port VLAN ID type-length-value (TLV), and a Port Protocol VLAN ID TLV.
    Type: Application
    Filed: October 7, 2013
    Publication date: April 9, 2015
    Applicant: Dell Products L.P.
    Inventors: Senthil Kumar Ganesan, Venkatesan Mahalingam
  • Publication number: 20150098475
    Abstract: According to one embodiment, a system includes a switch controller in communication with a plurality of switches in a switch cluster via a communication protocol, at least one switch in the switch cluster being configured to connect to a host, wherein the switch controller is configured to: maintain a Layer-3 (L3) host table configured to store entries including address information for hosts connected directly to the switch cluster, apply a policy to all existing entries in the L3 host table, and remove one or more existing entries according to the policy in order to reduce a number of entries in the L3 host table. In other embodiments, systems, computer program products, and methods for managing a L3 host table in software defined network (SDN)-based switch clusters having L3 distributed router functionality are presented.
    Type: Application
    Filed: October 9, 2013
    Publication date: April 9, 2015
    Applicant: International Business Machines Corporation
    Inventors: Sriharsha Jayanarayana, Dayavanti G. Kamath, Abhijit P. Kumbhare, Anees A. Shaikh
  • Publication number: 20150098476
    Abstract: An apparatus and method routes data over network links based on a temperature of the network links. When the temperature of a link meets a first threshold a routing mechanism re-routes a portion of the network traffic over a lower temperature link to reduce the likelihood that the link will exceed a second threshold that necessitates that the link be throttled back or disabled. Re-routing data to cooler links allows the system to maintain the lowest possible temperature of the network links to gain optimal performance of the system. In the disclosed example, the network links include interconnect cable connections and backplane connections. A temperature of the network links is determined by monitoring a region of an integrated circuit near a line driver driving the network link.
    Type: Application
    Filed: October 3, 2013
    Publication date: April 9, 2015
    Applicant: International Business Machines Corporation
    Inventors: Brett J. Reese, Gary R. Ricard, Jaimeson J. Saley
  • Publication number: 20150098477
    Abstract: An optical transmission system comprises at least one first connection point and one second connection point arranged to transmit and receive at least one channel signal transmitted via at least one optical means connecting the first connection point and the second connection, wherein each of the at least one channel signal is reversibly configurable to be transmitted in either a first direction or a second direction between the first connection point and the second connection point. A method of transmitting at least one channel signal between a first connection point and a second connection point via at least one optical media in an optical transmission system, wherein each of the at least one channel signals is reversibly configurable to be transmitted in either a first direction or a second direction between the first and the second connection points.
    Type: Application
    Filed: October 3, 2013
    Publication date: April 9, 2015
    Applicants: VERSITECH LIMITED, THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: Chun-Yin Li, Ping-Kong Alexander Wai, Victor On-Kwok Li
  • Publication number: 20150098478
    Abstract: A miniature tunable dye laser comprises a pair of mirrors opposed along an optical axis and shaped to provide an optical cavity with stable resonance in at least one mode and having a cavity length of at most 50 ?m. A laser dye is inside the optical cavity. A laser pump illuminates the dye with pump EM radiation having a band of wavelengths that is wider than the mode of said cavity An actuator system moves move the mirrors relative to each other along the length of the optical cavity for tuning the wavelength of the mode of said cavity.
    Type: Application
    Filed: May 3, 2013
    Publication date: April 9, 2015
    Applicant: ISIS INNOVATION LIMITED
    Inventors: Jason Michael Smith, Claire Vallance
  • Publication number: 20150098479
    Abstract: An optical pulse output apparatus and method for controlling a width and an intensity of an optical pulse are provided. The optical pulse output apparatus may include a laser driver to control an optical pulse output by a laser, based on a plurality of channel signals, and a channel delay unit to delay at least one of the plurality of channel signals.
    Type: Application
    Filed: June 13, 2014
    Publication date: April 9, 2015
    Inventors: Jyung Chan LEE, Seung Il MYONG
  • Publication number: 20150098480
    Abstract: An optical element module includes a casing having a bottom plate, a temperature-adjusting unit being mounted on the bottom plate in the casing and having at least a lower layer portion and an upper layer portion positioned above the lower layer portion, a support member mounted on the temperature-adjusting unit in the casing, and a semiconductor laser element being mounted on the support member and outputting a laser light to a forward side. The upper layer portion of the temperature-adjusting unit projects at a backward side of the semiconductor laser element relative to the lower layer portion.
    Type: Application
    Filed: December 9, 2014
    Publication date: April 9, 2015
    Applicant: FURUKAWA ELECTRIC CO., LTD
    Inventors: Tetsuya MATSUYAMA, Maiko Ariga, Toshio Sugaya, Toshio Kimura
  • Publication number: 20150098481
    Abstract: A method of optical signal amplification. Incident photons are received at a photodetector including a doped semiconductor biased by a power source. The photons generate a change in a reflective property, refractive index, or electrical conductivity of the doped semiconductor. For the change in reflective property or refractive index, a first optical signal is reflected off the photodetector to provide a reflected beam, or the photodetector includes a reverse biased semiconductor junction including the doped semiconductor within a laser resonator including a laser medium, wherein a second optical signal is emitted. For the change in electrical conductivity the photodetector includes a reversed biased semiconductor junction that is within an electrical circuit along with an electrically driven light emitting device, where a drive current provided to the light emitting device increases as the electrical conductivity of the photodetector decreases, and the light emitting device emits a third optical signal.
    Type: Application
    Filed: June 17, 2014
    Publication date: April 9, 2015
    Inventors: ARAVINDA KAR, TARIQ MANZUR
  • Publication number: 20150098482
    Abstract: Methods are provided for using masking techniques and plasma etching techniques to dice a compound semiconductor wafer into dies. Using these methods allows compound semiconductor die to be obtained that have smooth side walls, a variety of shapes and dimensions, and a variety of side wall profiles. In addition, by using these techniques to perform the dicing operations, the locations of features of the die relative to the side walls are ascertainable with certainty such that one or more of the side walls can be used as a passive alignment feature to precisely align one or more of the die with an external device.
    Type: Application
    Filed: December 16, 2014
    Publication date: April 9, 2015
    Inventors: Chee Siong Peh, Chiew Hai NG, David G. McIntyre
  • Publication number: 20150098483
    Abstract: A solid state laser includes an optical resonator cavity and a containment vessel disposed in the optical resonator cavity. The solid state laser also includes a gas-flow system operable to pump solid state nano-structures through the containment vessel and one or more diode pumps optically coupled to the containment vessel.
    Type: Application
    Filed: October 3, 2013
    Publication date: April 9, 2015
    Applicant: Lawrence Livermore National Security, LLC
    Inventors: Raymond J. Beach, Mark D. Rotter
  • Publication number: 20150098484
    Abstract: A tapping device and method using induction heat for melt comprises melting furnace made of steel; heating unit disposed in the upper part in the melting furnace and made of graphite material; induction coil wound around the heating unit; insulator disposed adjacent to the bottom surface of the lower part of the melting furnace; supporter disposed outside the insulator; and firebricks disposed on the bottom surface of melting furnace and outside the supporter.
    Type: Application
    Filed: December 30, 2013
    Publication date: April 9, 2015
    Applicant: KOREA HYDRO & NUCLEAR POWER CO., LTD.
    Inventors: Hyun Je CHO, Cheon Woo KIM, Young Il KIM, Sang Woo LEE, Seung Chul PARK, Jong Gil PARK, Tae Won HWANG
  • Publication number: 20150098485
    Abstract: An assembly comprising a sample and a device for generating a high temperature gradient in said sample comprises: a chamber inside which the sample is placed; a resistor passing through the sample; first inductive means at the periphery of the chamber, for creating an electromagnetic field; and second inductive means that are arranged inside the chamber and connected to the resistor, and that are capable of picking up said electromagnetic field so as to make an induced current flow through said resistor, the chamber being transparent and the first inductive means comprising at least one first coil at least one coil of which contains windings separated by at least 2 mm, this separation being configured to allow an optical means for measuring deformation to be targeted.
    Type: Application
    Filed: October 2, 2014
    Publication date: April 9, 2015
    Inventors: Yves PONTILLON, Eric HANUS, Helene CAPDEVILA
  • Publication number: 20150098486
    Abstract: An assembly for measuring a temperature of a fluid flowing through a tubing section is provided. The assembly can include the tubing section that can include a reduced-width portion. The reduced-width portion can traverse a circumference of the tubing section. The assembly can also include a temperature measurement component in thermal communication with an inner diameter of the tubing section. A temperature of a fluid flowing through the tubing section can be detected using the temperature measurement component.
    Type: Application
    Filed: October 1, 2014
    Publication date: April 9, 2015
    Inventors: Christopher Michael McMillon, Robert Mitchell Neely
  • Publication number: 20150098487
    Abstract: A method of determining position and a temperature is disclosed. A test pulse is propagated along a longitudinal axis of a magnetostrictive rod having a plurality of longitudinally-spaced reflective features. Reflections of the ultrasonic test pulse are received from the reflective features and from a cursor coupled with the magnetostrictive rod. The received reflections are separated into one of a first set indicative of temperature and a second set indicative of position of the cursor. Temperature is determined from the first set of pulses, and the position of the cursor along the magnetostrictive rod is determined from the second set of pulses. Position and temperature measurements may be used to operate a downhole tool on a work string.
    Type: Application
    Filed: July 10, 2014
    Publication date: April 9, 2015
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Ke Wang, Zhiyue Xu
  • Publication number: 20150098488
    Abstract: Systems and methods for monitoring temperature distribution in downhole equipment using magnetostrictive probes. In one embodiment, an ESP motor has a stator with a rotor and shaft rotatably positioned within the stator. Magnetostrictive sensors are positioned within the motor. Each magnetostrictive sensor has a transducer, a probe, and electronic circuitry coupled to the transducer. The circuitry generates an initial electrical signal that is conveyed to the transducer. The signal passes through one or more coils in the transducer, generating magnetic fields that induce an acoustic signal in the probe. The acoustic signal propagates through the probe and waves are reflected from reflection points in the probe.
    Type: Application
    Filed: May 1, 2014
    Publication date: April 9, 2015
    Applicant: Baker Hughes Incorporated
    Inventors: Ke Wang, Zhiyue Xu
  • Publication number: 20150098489
    Abstract: A semiconductor device includes: a semiconductor substrate; a plurality of conductive lines formed on the semiconductor substrate; and an electrode for temperature measurement. The electrode is connected to the plurality of conductive lines. An electronic device includes a semiconductor device and has a temperature sensing function. The semiconductor device includes: a semiconductor substrate; a plurality of conductive lines formed on the semiconductor substrate; and an electrode for temperature measurement.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 9, 2015
    Inventors: Kyongtaek LEE, Sangwoo PAE, Junekyun PARK
  • Publication number: 20150098490
    Abstract: A method and an apparatus are provided for transmitting and receiving uplink data in a wireless communication system. The method includes transmitting an uplink grant including resource allocation information and frequency hopping information; determining a resource for the uplink data based on the resource allocation information and a packet transmission number, if the frequency hopping information indicates that a predefined hopping pattern is enabled; and receiving the uplink data mapped on the determined resource. Mirroring is alternatively applied for determining the resource based on the packet transmission number.
    Type: Application
    Filed: December 15, 2014
    Publication date: April 9, 2015
    Inventors: Sang Min RO, Youn H. HEO
  • Publication number: 20150098491
    Abstract: There is provided an incoherent UWB-IR communication method by which erroneous demodulation is difficult to occur even in a multipath environment. Thus, the present invention includes an incoherent wireless communication method including a first step of modulating transmission data, a second step of converting the modulated transmission data into pulses and converting the pulses received from the external into reception data, and a third step of demodulating the reception data, wherein the pulses used in the second step includes a plurality of pulse sequences and the plurality of pulse sequences is such that the peaks of cross-correlation values are lower than the peaks of autocorrelation values.
    Type: Application
    Filed: March 28, 2012
    Publication date: April 9, 2015
    Inventors: Takashi Yano, Hiroshi Kamizuma
  • Publication number: 20150098492
    Abstract: The invention relates to a method for generating fail-silent synchronisation messages in a distributed real-time system, wherein the method uses the following functional units: a satellite receiver (110) for receiving a time signal (S-signal) from a navigation satellite system, a precision reference clock (130), which generates an actual time signal (R-signal), a central computer (140), a monitor (120) and a data block (210) for storing configuration parameters, wherein the satellite receiver (110) periodically generates an S-signal, and wherein the reference clock (130) periodically produces an R-signal, wherein the nominal frequency and phase of the R-signal is identical to the frequency and phase of the S-signal, and wherein the difference between the nominal and actual R-signal is used in order to minimise this difference in the future, and wherein, in the normal case of the satellite receiver (110), the periodic synchronisation message (220), which is to be generated in accordance with the configuration
    Type: Application
    Filed: April 9, 2013
    Publication date: April 9, 2015
    Inventor: Stefan Poledna
  • Publication number: 20150098493
    Abstract: A method for spreading a plurality of data symbols onto subcarriers of a carrier signal for a transmission in a transmission system provides a data vector, including the plurality of data symbols; and generates a spread data vector based on the provided data vector and a spreading matrix, with the spread data vector including a length, which corresponds to the number of subcarriers and with the spreading matrix being based on a spreading allocation matrix, a base spreading matrix, and a randomization matrix.
    Type: Application
    Filed: December 10, 2014
    Publication date: April 9, 2015
    Inventors: Wilhelm KEUSGEN, Michael PETER, Andreas KORTKE