02nd week of 2009 patent applcation highlights part 30 |
Patent application number | Title | Published |
20090010209 | NOTIFICATION EQUIPMENT, TERMINAL EQUIPMENT, COMMUNICATION SYSTEM AND COMMUNICATION METHOD - A notification equipment comprises a transmission data determination unit configured to determine whether transmission data to be transmitted to a terminal equipment is first transmission data or repeated transmission data, an instruction data generator configured to generate identification instruction data indicating that the transmission data is the first transmission data or the repeated transmission data based on a transmission data determination result by the transmission data determination unit, and an instruction data transmitter configured to transmit the identification instruction data to the terminal equipment. | 2009-01-08 |
20090010210 | Method Of Distributive Reservation Of A Medium In A Radio Communications Network - Method for reservation of a medium in a radio communication network for data transmission between stations (A-E) of the network comprising at least one station (A, B, E) operating according to a first protocol (DRP) and a second station (C, D) operating according to a second protocol (802.11), the method comprises the steps of: providing a contention free period ( | 2009-01-08 |
20090010211 | BASE STATION APPARATUS AND RESOURCE ASSIGNING METHOD - A base station apparatus that selects an optimum MCS level so as to improve system throughput. In this base station apparatus, a terminal rank detecting part ( | 2009-01-08 |
20090010212 | Method and apparatus for sharing uplink state flag (USF) with multiple uplink temporary block flows (TBFs) - A method and an apparatus are described for increasing the flexibility of uplink resource allocation for a mobile station (MS) ( | 2009-01-08 |
20090010213 | Mobile Station Device, Base Station Device, Mobile Station Device Operating Frequency Band Mapping Method, Location Management Device, Mobile Station Device Location Registration Method, Paging Method, and Program for Executing the Same and Recording Medium - In a method for mapping an operating frequency band of a mobile station device in a mobile communication system, an operating frequency band position at the time of idle mode of respective mobile station devices is arranged so as to be distributed throughout a unique frequency bandwidth of a base station device. | 2009-01-08 |
20090010214 | Method of Physical Resource Management in a Wideband Communication System - In a wideband communication system including a transmitter and a plurality of mobile terminals (MT) that have maximum reception bandwidths, respectively, a Shared Control Channel (SCCH) for each MT is mapped so that physical channel symbols from the corresponding Physical Shared Control Channels (PSCCH) are confined to a block of consecutive sub-carriers defined by a smallest one of the maximum reception bandwidths. | 2009-01-08 |
20090010215 | METHOD OF ALLOCATING WIRELESS RESOURCE FOR SPACE DIVISION MULTIPLE ACCESS COMMUNICATION AND WIRELESS RESOURCE ALLOCATION SYSTEM OF ENABLING THE METHOD - A system for allocating a wireless resource for a Space Division Multiple Access (SDMA) communication is provided. The system for allocating the wireless resource for the SDMA communication includes: a channel state recognition unit to recognize a channel state of wireless channels generated among adjacent nodes including a source node, a relay node, and a destination node; and a wireless resource allocation unit to control at least one of an amount of channel state information fed back from the destination node to the source node, and a relay level of a relay signal, the relay signal being generated by relaying a source signal transmitted from the source node, according to the channel state. | 2009-01-08 |
20090010216 | MEDIA-ACCESS-CONTROL PROTOCOL FOR A NETWORK EMPLOYING MULTI-USER WIRELESS CHANNELS - A medium-access-control (MAC) scheduler, according to one embodiment of which a station of a wireless network evaluates data throughputs corresponding to three different transmission configurations for transmission of a packet over a first of that station's wireless links. The first and second of those transmission configurations have the packet encoded in the first and second tiers, respectively, of a two-tier signal. The third transmission configuration has the packet encoded as a conventional single-tier signal. For each of the first and second transmission configurations, the station selects a second of that station's wireless links for transmission of at least a second packet, with the first and second packets encoded in different respective tiers of the two-tier signal. The station varies power allocation between the first and second tiers to optimize data throughput for each of the first and second transmission configurations and selects from the first, second, and third transmission configurations one resulting in the highest data throughput. | 2009-01-08 |
20090010217 | Method for Allocating at Least One User Data Link to at Leat One Multiplex Connection - The invention relates to a method for allocating at least one user data link to a multiplex connection provided between a first network element and a second network element. According to the method, the first network element generates a first signaling message and transmits the same to the second network element, the first signaling message indicating to the second network element that the first network element is available to transfer the at least one respective user data link via one respective multiplex connection. The second network element assigns one multiplex connection between the first network element and the second network element to each of the at least one user data link or selects a transfer outside a multiplex connection for the user data link in accordance with the indicated availability of the first network element and depending on whether the second network element supports the transfer of the at least one user data link via multiplex connection. The possibility of allocating the at least one user a data link to a multiplex connection is indicated to the first network element by a second signaling message that is generated in the second network element and is transmitted to the first network element. | 2009-01-08 |
20090010218 | METHOD AND APPARATUS FOR RESERVING CHANNEL CAPACITY - An approach is provided for reserving channel capacity. A device indicates non-use of a reservation of a resource of a frame corresponding to a channel access mechanism using a beacon transmission within a beacon period of the frame. Additionally, the device indicates that the reservation, in a data period of the frame, is temporarily freed. | 2009-01-08 |
20090010219 | Method of Selection and Signaling of Downlink and Uplink Bandwidth in Wireless Networks - In a wireless mobile communications system, a method of receiving data or signaling on a channel from a cell having a plural of divisions of cell bandwidth. Utilizing one or more sub-bandwidths to receive data or a signaling from the cell, thereby optimizing data or signaling transmission efficiency. | 2009-01-08 |
20090010220 | RADIO NETWORK CONTROLLER AND OPERATION CONTROL METHOD THEREOF - In order to obtain a Drift RNC capable of physically separating a C-plane and a T-plane from each other by defining a new signal between the C-plane and the T-plane, new signals | 2009-01-08 |
20090010221 | METHOD OF MULTIPLE-INPUT-MULTIPLE-OUTPUT WIRELESS COMMUNICATION - Embodiments of the present invention provide a method for selectively modulating a data frame of a signal using either a frequency-multiplexing modulation method or a spatial-multiplexing modulation method based on a predetermined criterion. | 2009-01-08 |
20090010222 | VoWLAN ROAMING CONTROLLER WITH STATION PRE-AUTHENTICATION - A method of triggering handoff of a mobile station to a candidate BSS, for VoWLAN communication, uses a roaming controller for monitoring link qualities of the serving and candidate BSS by selective/controlled fast scanning through RSSI screening at each packet reception. Using link qualities, a list of candidate BSSs for handoff is maintained. The controller selects a candidate BSS for handoff and completes pre-authentication of the mobile station with the selected best candidate BSS. When the link quality of the of the selected candidate BSS becomes better than that of the serving BSS, handoff is triggered. Link qualities may be monitored by screening a metric other than RSSI. When no candidate BSS is found, scanning is reduced/temporarily interrupted, to conserve power. When the serving BSS link quality is above a given threshold when the mobile station is in the serving BSS center, the functions of fast scanning and pre-authentication are interrupted. | 2009-01-08 |
20090010223 | Communication Management Method and Communication Management Device - The avoidance of congestion between a mobile node (MN) and an access router (AR), connected to each other through radio communication, is achieved by reducing the volume of information to be transmitted between the MN and the AR. In particular, for the purpose of realizing the reduction of the information volume to be transmitted between a mobile router (MR) and an access router and the avoidance of congestion, an MR | 2009-01-08 |
20090010224 | CHANNEL DEPENDENT CREDIT ACCUMULATION FOR MOBILE HANDOVER - Channel dependent credit accumulation for determining a mobile handover is provided herein. In some aspects, a characteristic(s) of a source channel(s) serving a mobile device and of one or more target channels can be evaluated. Magnitudes of the evaluated characteristics can be utilized to generate handover credits associated with the target channel(s) (e.g., based on some function of a difference in the magnitudes). If a concurrent number of credits associated with a target channel equals or rises above one or more threshold levels, a mobile device can initiate a handover. As described, disparity in source and target channel quality, signal strength, etc., can be determined to increase probability of a handover based on channel degradation over one or more time intervals. | 2009-01-08 |
20090010225 | Methods and Apparatus for RF Handoff in a Multi-Frequency Network - Methods and apparatus for RF handoff in a multi-frequency network. In an aspect, a method includes generating a content preserving handoff table that includes a current LOI and neighboring LOIs carrying at least the same wide and local content multiplexes as the current LOI, and determining that handoff conditions are met for a content preserving handoff, selecting a selected LOI from the content preserving handoff table and a selected RF channel associated with the selected LOI, and performing a handoff to the selected RF channel in the selected LOI if the selected LOI is different than the current LOI. An apparatus includes means for generating a content preserving handoff table, means for determining that handoff conditions are met for a content preserving handoff, means for selecting a selected LOI and a selected RF channel, and means for performing a handoff to the selected RF channel in the selected LOI. | 2009-01-08 |
20090010226 | Communication Terminal, Access Point Switching Method, and Access Point Switching Control Program - [Subject] To realize optimum handover in consideration of not only reception environment of a communication terminal itself but also situations on the other party of communication. | 2009-01-08 |
20090010227 | RETRANSMISSION METHOD FOR MULTIPLE ANTENNA SYSTEM - A packet retransmission method for use in a communication system transmitting a signal via at least two antennas is disclosed. The packet retransmission method includes the steps of: a) receiving a signal corresponding to a specific packet, and independently transmitting a signal via the at least two antennas corresponding to the received signal; b) receiving a NACK signal associated with the packet; and c) independently applying an STTD to a real part and an imaginary part of each signal transmitted at step (a), and transmitting the STTD-resultant signal. Therefore, the method separates a real part and an imaginary part from each other, obtains a STTD gain, and can efficiently transmit a packet. | 2009-01-08 |
20090010228 | Method for Restraining Cross-Slot Interference in Slot Cdma System - The present invention discloses a method for suppressing cross-slot interference in a time-slotted CDMA system. The method includes: determining, by a base station, positions of cross slots according to configuration information of local cell and configuration information of co-frequency adjacent cells, and performing multi-cell channel estimation on the cross slots to obtain channel estimation results; determining, by the base station, code channel configuration information of the co-frequency adjacent cells, grouping the determined code channels and determining the code channels of the co-frequency adjacent cells involved in a joint detection; and performing, by the base station, the joint detection according to the multi-cell information estimation results and the determined code channels of the base stations involved in the joint detection to obtain detection data. With the present invention, interference from a base station transmitting downlink signals in cross slots to a base station receiving uplink signals in the corresponding slot may be reduced, and the system capacity and the stability may be improved. | 2009-01-08 |
20090010229 | Token Based Radio Resource Management - The invention relates to a method of globally balancing the transmit power in a cellular radio system with tight reuse of frequencies, to a central controller node, and to an access point that in combination with conventional power control schemes balances the downlink transmission power on reused frequencies in order to balance co-channel interference in a multi-cell environment. The power balancing scheme dynamically assigns a token to or takes a token away from an individual reused radio channel based on quality of, or based on transmission power in the channel. A token, if taken away from the channel, inhibits conventional power control thereby freezing the transmission power in the channel on its current power level. A token, if assigned or re-assigned to channel, re-assumes conventional power control thereby allowing dynamic variation of the transmission power in the channel in accordance with the conventional power control. | 2009-01-08 |
20090010230 | AUTOMATIC WIRELESS NETWORK LINKING METHOD WITH SECURITY CONFIGURATION AND DEVICE THEREOF - An automatic wireless network linking method with a security configuration includes: providing an access point with a floating service set identifier and a shared key. The floating service set identifier has a prefix name. Next, a host system is provided to execute a setting and linking application to automatically scan the access point with the prefix name and obtain the floating service set identifier of the access point. Both the access point and the setting and linking application perform an operation process to generate a dynamic key. The dynamic key is converted into a wireless network encryption algorithm. Finally, the host system links to the access point to perform wireless communication, and uses the wireless network encryption algorithm to encrypt and decrypt data. Thereby, the time required for setting up the wireless network platform is reduced. | 2009-01-08 |
20090010231 | COMMUNICATIONS METHODS AND APPARATUS RELATED TO SYNCHRONIZATION WITH RESPECT TO A PEER TO PEER TIMING STRUCTURE - Methods and apparatus related to peer to peer communication networks are described. A peer to peer timing structure is implemented which includes recurring peer discovery intervals and traffic intervals. Some embodiments further include recurring paging intervals for peer to peer pages. A wireless communications device, supporting peer to peer communications and storing information defining the timing structure, determines a time reference point, facilitating a coarse level of synchronization with respect to the timing structure. The time reference point is determined based on a broadcast signal received from a communications device, e.g., a satellite, base station, or beacon signal transmitter. Multiple peer to peer wireless communications devices in a local vicinity thus obtain the same basic understanding as to the current relative point in time with respect to a common recurring peer to peer timing structure. Peer to peer timing synchronization is further refined based on received signals communicated between peers. | 2009-01-08 |
20090010232 | METHODS AND APPARATUS RELATED TO PEER TO PEER COMMUNICATIONS TIMING STRUCTURE - Methods and apparatus related to peer to peer communication networks are described. A peer to peer timing structure is implemented which includes a pattern of different types of time intervals including at least a peer discovery time interval and a traffic interval. A wireless communications device, supporting peer to peer operations stores the peer to peer timing structure information, accesses the stored information, and used the accessed information to determine an operation to be performed during a current time period. The operation is, e.g., a peer discovery operation, a peer to peer timing synchronization operation, a peer paging operation, or a peer to peer traffic signaling operation. Various exemplary relationships between the different types of intervals, including relative frequencies, relative durations, and spacing information, are described. Advantageous construction of the recurring peer to peer timing structure facilitates efficient utilization of air link resources and/or higher traffic data throughput capabilities. | 2009-01-08 |
20090010233 | Wireless Gateway in a Process Control Environment Supporting a Wireless Communication Protocol - A wireless gateway for use in a process control environment includes a wireless interface for communicating with a first wireless network using a first wireless communication protocol, such that the wireless network includes a plurality of field devices operating in the process control environment. The wireless gateway further includes a host interface for communicating with an external host disposed outside the wireless network using a second communication protocol and a protocol translator to enable an exchange of data between the first interface and the second interface. | 2009-01-08 |
20090010234 | ROUTING PROTOCOL FOR A NETWORK EMPLOYING MULTI-USER WIRELESS CHANNELS - A routing protocol, according to one embodiment of which a first station of a wireless network monitors its outgoing transmissions corresponding to a traffic flow for occurrence of multi-tier signals and for ability to achieve a specified minimum transmission rate. Based on the monitoring, the first station may transmit an outgoing solicitation message that identifies the monitored traffic flow as a candidate for rerouting. Upon receipt of the solicitation message, a second station of the wireless network evaluates whether rerouting of the monitored traffic flow through the second station is capable of increasing data throughput for that traffic flow without decreasing data throughputs for other traffic flows presently handled by the second station. Based on this evaluation, the second station may transmit to the first station an offer to reroute the monitored traffic flow. The first station, in turn, evaluates this offer, e.g., by comparing its benefits with those of alternative offers that the first station might have received from other stations of the wireless network in response to the solicitation message. Based on the latter evaluation, the first station may reroute the monitored traffic flow through the station whose offer is deemed preferable. | 2009-01-08 |
20090010235 | WIRELESS LOCAL ACCESS NETWORK SYSTEM MANAGEMENT PROCEDURE AND STATION SUPPORTING THE PROCEDURE - Provided are WLAN system management procedure and a station supporting the procedure. In the management procedure, a station receives one or more event request frames each of which includes zero or more event request elements, wherein each of the event request elements comprises an event type field for specifying the event type of an event request. After reception, if the station moves to a different Extended Service Set (ESS), the station cancels all outstanding event requests of the event request frames and deletes all pending event report frames and event data. | 2009-01-08 |
20090010236 | Mobile Communication Control Method, Mobile Terminal, and Access Router - A technology is disclosed that provides a mobile communication control method, a mobile terminal, and an access router that allow communication to be continued after a handover without newly establishing all protocol states from the beginning. The technology includes a step at which a mobile node | 2009-01-08 |
20090010237 | Communication Method, Communication System, Mobile Node and Network Node for Notification About the Proximity of a Second Wireless Network Via a First Wireless Network - For communications between several different types of wireless networks and a mobile node, technology to provide various services from a wireless network to the mobile node which is not covered by that network without exhaustion of the mobile node battery is disclosed. According to this technology, the mobile node sends an update message to a currently accessible network node, which transfers the update message to the same or different types of nearby network nodes with incrementing the hop count for every transfer. The different type of network node that has received the update message checks whether the hop count decreases from that previously received and judges that the mobile node is approaching if the hop count decreases and sends the guide message to the mobile node via the same and different types of networks. | 2009-01-08 |
20090010238 | METHOD FOR CHANNEL ESTIMATION IN A POINT-TO-POINT COMMUNICATION NETWORK. - A method of using pilot signals in a wireless communication network including encoding pilot signals, and transmitting the encoded pilot signals over an in-band backhaul link between two nodes in the network. Preferably, the pilot signals are encoded with a CDMA codeword associated with a link. The pilot signals can be decoded to permit estimation of a channel and interference attributable to each link. | 2009-01-08 |
20090010239 | CONTROL OF CDMA SIGNAL INTEGRATION - A method for controlling integration for a CDMA signal and a receiver implementing the same. In accordance with the present invention, non-coherent and even coherent integration periods for a received signal are dynamically and adaptively controlled depending upon the condition of the received signal. The integration period can be very short when signal strength is strong and no blocking exists; while it can be extended to be longer when the signal strength is weak or there is a blocking. Therefore, it is possible to keep locking even under bad circumstances. In addition, the fix time can be shortened when the signal strength is very strong. | 2009-01-08 |
20090010240 | PARTITIONING OF FREQUENCY RESOURCES FOR TRANSMISSION OF CONTROL SIGNALS AND DATA SIGNALS IN SC-FDMA COMMUNICATION SYSTEMS - A method for the partitioning frequency resources used in the transmission of control signals and data signals by user equipments in a communication system. The control signals and data signals are for periodic transmission and dynamic transmission. Also provided is an apparatus and method for user equipments to determine the first frequency unit available for the transmission of dynamic control signals, such as acknowledgement signals associated respective reception of data signals configured through a scheduling assignment by a serving Node B. The utilization of the operating bandwidth is maximized by avoiding fragmentation and facilitates the achievement of reception reliability targets particularly for control signals. | 2009-01-08 |
20090010241 | Transmission Device, Transmission Method, and Computer-Readable Medium - A transmission device transmits data to a certain communication device among multiple communication devices connected over a wireless network in wireless communication capable of using multiple transmission rates. The transmission device includes first transmitting means for transmitting a first packet to the certain communication device during a transmission inhibited period; receiving means for receiving a second packet including information indicating a communication environment at reception of the first packet at the certain communication device from the certain communication device; and second transmitting means for transmitting a third packet to the certain communication device at a transmission rate appropriate for the information that is included in the received second packet and that indicates the communication environment. The data length of the certain data included in the first packet is shorter than that of the data included in the third packet. | 2009-01-08 |
20090010242 | System and method for estimating interference in a packet-based wireless network - A system and method for predicting future interference power in packet-switched networks is disclosed, allowing improved performance in such networks via optimized link adaptation and power control. In an embodiment for use in a cellular network, Kalman filtering can be used to provide the interference estimation through identification of the number of active co-channel interferers in the cellular networks and correlation of the interference power with the number of active interferers. A two-dimensional Kalman filter can be used to exploit that correlation to enhance prediction accuracy. In an alternative embodiment, a one-dimensional Kalman filter can be used where the number of active interferers is not considered. | 2009-01-08 |
20090010243 | EXTENDED REAL-TIME POLLING SERVICE (ertPS) SCHEDULING SERVICE - A mobile station initiates an extended real-time polling service (ertPS) scheduling service talk-spurt period using a bandwidth allocation request ( | 2009-01-08 |
20090010244 | METHODS AND APPARATUS SUPPORTING MULTIPLE TIMING SYNCHRONIZATIONS CORRESPONDING TO DIFFERENT COMMUNICATIONS PEERS - Methods and apparatus related to peer to peer communication networks are described. A wireless communications device supports peer to peer communications with multiple peers. The wireless communications device determines its transmit timing synchronization based on a reference signal received from a node such as a base station, a satellite, or a beacon transmitter which does not transmit user data. The wireless communications device determines a plurality of different receive timing adjustments corresponding to different peer communications devices based on signals received from those peer communications devices. The wireless communications device stores the plurality of determined receive timing adjustment information corresponding to the different peer communications devices. The wireless communications device retrieves and applies stored receive timing adjustment information which matches the particular device which transmitted the signal attempting to be recovered. | 2009-01-08 |
20090010245 | Synchronization of media access control (MAC) superframes - A device and method for of synchronizing a MAC superframe of a wireless device is disclosed. The wireless device can be located within a chain of a plurality of other wireless devices. The method includes receiving beacons from at least one other device during a superframe of the wireless device, determining a superframe offset for each of the other wireless devices based on timing of the received beacons, determining a corrective delay based on the superframe offsets, inserting the corrective delay within a current superframe of the wireless device, and inserting a predictive delay within the current superframe, the predictive delay being determined by an estimate of a difference between a frequency a clock of the wireless device and a frequency of a slowest clock of the other wireless devices within the chain. | 2009-01-08 |
20090010246 | Cordless telephone systems - A multimode home telephone system includes a computer, a base unit, a wireless handset and a wireless headset. The computer is programmed with a “soft phone” program to make and receive VOIP calls via the Internet and couple them to and from the base through a USB connection. The base is also coupled to a public switched telephone network (PSTN) and is operable to effect full duplex communication via both the PSTN and the Internet. The base, in turn, is wirelessly coupled to the handset via the DECT/UPCS protocol, and the handset is wirelessly coupled to the headset via the Bluetooth protocol, such that the user can selectively place and receive telephone calls via any one of the Internet, the PSTN or an optional Bluetooth enabled cell phone. Optionally, a DECT/UPCS enabled headset can communicate directly with the base in addition to or in lieu of the Bluetooth enabled headset. | 2009-01-08 |
20090010247 | Method and Arrangement for Enabling a Multimedia Communication Session - A method and arrangement for enabling multimedia during an ongoing circuit-switched call between a first mobile terminal and a second terminal, wherein the first terminal uses a first access having constraints by not admitting simultaneous packet-switched and circuit-switched communication. A change of connection is detected from the first access to a second access having no such constraints by admitting simultaneous packet-switched and circuit-switched communication. A capability query is then sent to the second terminal in response to said detection. When the requested capabilities are received from the second terminal, possible multimedia applications and/or services are indicated to the user according to the received capabilities. | 2009-01-08 |
20090010248 | Data Communication System and Data Communication Method - An IP terminal | 2009-01-08 |
20090010249 | METHOD OF DISTRIBUTING GEO-LOCALISATION INFORMATION - The invention concerns a method of distributing geo-localisation information associated with an endpoint device ( | 2009-01-08 |
20090010250 | REVERSE ENUM BASED ROUTING FOR COMMUNICATION NETWORKS - A network and method of routing a call between communication networks includes a first step of establishing a reverse ENUM DNS server containing a table of NAPTR records that associate E.164 telephone numbers with identifiers. A next step includes routing a call from an originating PSTN system to a first gateway. A next step includes sending an ENUM query containing an E.164 telephone number to an ENUM DNS server, which returns an identifier associated with the E.164 telephone number. A next step includes routing the call to a second gateway. A next step includes launching a reverse ENUM query containing the identifier to the reverse ENUM DNS server, which looks up an E.164 telephone number associated with the identifier, and returns it to the second gateway. A next step includes routing the call from the second gateway to the returned E.164 telephone number in the terminating PSTN system | 2009-01-08 |
20090010251 | Simplifying DSL Deployment via Analog/DSL Combination Solution - A method using a combination analog/DSL modem for deploying DSL services is disclosed. A combination analog/DSL modem is utilized at the subscriber premises. A telephone line is tested using the analog portion of the modem. In combination with information provided by the subscriber and records, suitability of the service line for DSL services may be accurately determined. DSL service is then ordered by the subscriber. Preferably, DSL services are deployed on top of the existing analog voice service line allowing service turn-on within a short period of time. The subscriber can have the ability to access a network using the DSL portion of the combination modem. If during modem testing, it is determined that the telephone line would not support DSL service, the subscriber would be informed that DSL service is currently not available for them. However, the subscriber could continue to use the analog portion of the combination modem. | 2009-01-08 |
20090010252 | Integrated Memory for Storing Egressing Packet Data, Replay Data and To-be Egressed Data - An integrated egress/replay memory structure is provided with split rate write and read ports and means for managing at least three types of data moving into, through and/or out of the integrated memory structure, namely: (1) currently egressing packet data; (2) replay data; and (3) to-be egressed data. Additionally, a shared free space (4) is managed between the storage areas of the (2) replay data and (3) the to-be egressed data. The to-be egressed data (PdBx) is allowed to enter into (to be written into) a front-end raceway portion of the integrated memory structure at a rate which can be substantially greater than that allowed for corresponding egressing packet data (PdUx). Thus, even when egressing packet data that is ahead in line is shifting out toward a slow rate egress port, this slowing factor does not slow the speed at which the to-be egressed data (PdBx) can be shifted into the front-end raceway portion. A shared free space memory area is maintained between the storage areas of the replay data (PdAx) and to-be-egressed data (PdBx). When a positive acknowledgement (ACK) is received from the destination of already-egressed data (of the After-Transmission Data, or PdAx), the corresponding replay storage area (the area storing the acknowledged PdAx data) can be reallocated for use as an empty part of the raceway portion. | 2009-01-08 |
20090010253 | PACKET BASED VIDEO DISPLAY INTERFACE - A packet based display interface arranged to couple a multimedia source device to a multimedia sink device is disclosed that includes a transmitter unit coupled to the source device arranged to receive a source packet data stream in accordance with a native stream rate, a receiver unit coupled to the sink device, and a linking unit coupling the transmitter unit and the receiver unit arranged to transfer a multimedia data packet stream formed of a number of multimedia data packets based upon the source packet data stream in accordance with a link rate between the transmitter unit and the receiver unit. | 2009-01-08 |
20090010254 | Packet transfer apparatus and packet transfer method - A network system includes a maintenance terminal and a switch that transfers a packet. Upon receiving a link-trace message packet, the switch transfers, when links to the destination constitute a link aggregation, the link-trace message packet to all physical links constituting the link aggregation. In response to the link-trace message packet, the switch receives a link-trace reply packet from each of the physical links, and generates link-trace result data. the link-trace result data is output to the maintenance terminal. | 2009-01-08 |
20090010255 | METHOD OF TRANSMITTING/RECEIVING CONTROL MESSAGE IN A MOBILE COMMUNICATION SYSTEM PROVIDING MULTIMEDIA BROADCAST/MULTICAST SERVICE - A control message transmitting/receiving method in an MBMS-supporting mobile communication system. In the present invention, an RNC periodically transmits control messages related to MBMS RB setup to UEs. Thus, although a UE initially fails to receive an intended MBMS service, it can set up an MBMS RB by receiving a related retransmitted control message. Also, the RNC periodically provides information about ongoing MBMS services on a cell basis so that a UE can decide whether its requested MBMS service is in progress and request information required to set up an MBMS RB for the MBMS service to the RNC by individual signaling. | 2009-01-08 |
20090010256 | Techniques for introducing in-band network management packets in multi-protocol label switching networks - A system and method for introducing in-band network management packets (INMPs) in a Multi-Protocol Label Switching (MPLS) network. MPLS is an emerging technology, which integrates Internet Protocol (IP) routing with label switching techniques. MPLS intends to provide new capabilities in the area of traffic engineering for IP networks. These traffic engineering capabilities will have to be combined with a set of complementary operation, administration and maintenance (OA&M) functions for effectively managing and operating MPLS-based networks. This invention uses INMPs for carrying OA&M information to label switching routers (LSRs) for effectively managing and operating MPLS-based networks. This invention also includes techniques for distinguishing INMPs from user packets in an MPLS network. This invention further includes using a predetermined code in a shim header of an MPLS packet to determine whether an MPLS packet is an INMP or a user packet. The predetermined code may be provided in an experimental field or a time-to-live field in the shim header of the packet. Alternatively, a label may be reserved for distinguishing an INMP from a user packet. | 2009-01-08 |
20090010257 | METHOD AND APPARATUS FOR SIMULTANEOUS SUPPORT OF FAST RESTORATION AND NATIVE MULTICAST IN IP NETWORKS - The invention includes a method and apparatus for simultaneously supporting restoration and native multicast at a router in an Internet Protocol (IP) network. In one embodiment, a method includes establishing a point-to-point pseudowire having an endpoint at the router, associating the point-to-point pseudowire with an IP interface, and associating a multicast protocol with the IP interface. The point-to-point pseudowire is adapted for supporting restoration in response to a failure. The association of the multicast protocol with the IP interface enables running of the multicast protocol in a manner that gives an appearance that the multicast protocol is running natively on an IP link. This methodology may be repeated for each of a plurality of routers in an IP network in order to configure the routers to support restoration capabilities and native multicast capabilities such that fast restoration may be provided in response to failure conditions in a manner that is transparent to a multicast protocol providing multicast capabilities for the IP network. In this manner, both fast restoration and native multicast may be supported within an IP network, e.g., in an IPTV network or other types of IP networks supporting other types of services. | 2009-01-08 |
20090010258 | PACKET PRIORITIZATION IN AD HOC NETWORKS - A wireless communication device operable as a node in an ad hoc network ( | 2009-01-08 |
20090010259 | DEVICE, SYSTEM, AND METHOD OF CLASSIFICATION OF COMMUNICATION TRAFFIC - Device, system, and method of classification of communication traffic. For example, a communication traffic classifier includes: a dynamically configurable port and address classifier to classify an unclassified packet based on port and address configuration information received from an application protocol classifier. | 2009-01-08 |
20090010260 | TOKEN PROTOCOL - The invention provides a method of transmitting one or more tokens over a link between processors, whereby configurations of logical transitions on the lines are used to signal respective codes. The method comprises: transmitting a token by signalling a sequence of codes selected from said codes on the lines; and transmitting one or more additional codes on the lines to ensure that the total number of logical transitions on each line returns the link to a quiescent state following the signalling of said one or more tokens and additional codes. | 2009-01-08 |
20090010261 | Signal Transition Feature Based Coding For Serial Link - Signal transition feature based coding for serial link is described herein. According to one embodiment, in response to a data stream transmitted onto a serial communication link, one or more bits of the data stream are encoded according to bit order determined based on a frequency of signal transitions of the data stream. As a result, a sequence of encoded data stream having a lower number of bit transitions with respect to the frequency of signal transitions of the data stream prior to the encoding is generated. Thereafter, the encoded data sequence is transmitted onto the serial communication link. Other methods and apparatuses are also described. | 2009-01-08 |
20090010262 | NETWORK ROUTING APPARATUS - A network routing apparatus in which packet forwarding units for performing a packet forwarding process are arranged in parallel to one another, a packet distribution unit for distributing packets to the packet forwarding units arranged in parallel to one another, a packet rearrangement unit for rearranging outputs of the packet forwarding units are provided in the network routing apparatus, and packet retrieving units for retrieving packet headers in the packet forwarding units are further arranged in parallel to one another. | 2009-01-08 |
20090010263 | MoCA frame bundling and frame bursting - A system and method are provided for aggregating Multimedia over Coax Alliance (MoCA) Medium Access Control (MAC) frames. The method sends a Multiframe Reservation Request (MRR) requesting a transmission time slot, and receives a grant in response to the MRR. Subsequent to sending the MRR, a plurality of MoCA MAC frames are accepted and assembled into a physical layer (PHY) burst packet that is transmitted in the granted time slot. A method is also provided for bundling client data packets into a MoCA MAC frame. The method sends a Bundledpacket Reservation Request (BRR) requesting a transmission time slot, and receives a grant in response to the BRR. Subsequent to sending the BRR, a plurality of client data packets are accepted and concatenated into a bundled MoCA MAC frame. The bundled MoCA MAC frame is transmitted in a PHY packet in the granted time slot. | 2009-01-08 |
20090010264 | Method and System for Ensuring QoS and SLA Server - A method and system for ensuring QoS in a communication network and a SLA server. The system for ensuring QoS includes a service-specific server and a SLA server. The method for ensuring QoS includes: querying the SLA information according to a user identity, where the SLA information includes different service levels signed by the same user identity; obtaining different service levels signed by the same user identity; and providing the user with the service at a corresponding service level. Through the technical solution of the present invention, a user can subscribe to more than one service level and the SP can ensure the QoS at different service levels for the user. | 2009-01-08 |
20090010265 | Flexible mapping of virtual local area networks to Ethernet virtual circuits - A method includes configuring multiple Ethernet Virtual Circuits (EVCs) for communicating with respective service gateways that provide respective communication services. A data packet, which belongs to a Virtual Local Area Network (VLAN) and is associated with a communication service from among the communication services, is accepted. The data packet is mapped to an EVC from among the multiple EVCs responsively to the VLAN to which the data packet belongs and to the communication service with which the data packet is associated. The data packet is sent over the EVC to the service gateway, in order to provide the communication service. | 2009-01-08 |
20090010266 | System of Extending Address on Atm Universal Test Operation Interface Bus and the Method Thereof - The system of this invention for extending address on UTOPIA and the method thereof can extend the single PHY on the ATM switching chip bus to many PHY ports easily without increasing too much cost, and thus increase the application flexibility of corresponding ATM switching chips. Evidently, there would be still many other embodiments of the invention, the people skilled in the art can make a variety of corresponding changes and transformations in accordance with the invention without departing from its spirit and essential, but these corresponding changes and transformations should also be in the protection range of the claims of this invention. | 2009-01-08 |
20090010267 | NETWORK DEVICE AND PACKET FORWARDING METHOD THEREOF - A network device, for forwarding packets from an asynchronous transmit mode (ATM) network over different permanent virtual connections (PVC) to a plurality of terminal devices, includes a storage module, a flag setting module, a buffer, and a sending module. The storage module is for storing an identifier of at least one predetermined PVC, and packets transmitted over the at least one predetermined PVC need to be processed with higher priority. The flag setting module is for receiving the packets transmitted over the different PVCs, marking packets transmitted over the at least one predetermined PVC corresponding to the identifier stored in the storage module, and sending the packets to the buffer for temporarily storing the packets. The sending module is for retrieving the packets from the buffer, and first sending the marked packets to the plurality of terminal devices. | 2009-01-08 |
20090010268 | Controlling Access to a Shared Communication Medium of a Mobile Adhoc Network - A method of controlling access of mobile users of a substantially infrastructureless communications network to a shared communication medium, wherein the shared communication medium is partitioned into a plurality of individual communication channels that can be individually exploited for communications between the network users. The method includes determining the existence of at least one main direction of movement of the network users, the main direction of movement being a direction around which directions of movement of a prescribed number of network users are clustered; associating a group of communication channels within the plurality of communication channels to the at least one main direction of movement; and reserving the communication channels of the group to the network users moving substantially in the main direction of movement. | 2009-01-08 |
20090010269 | Method And Apparatus For Routing Packets - Packets may be routed in a heterogeneous communications network as follows: for a set of packets comprising at least one packet to be transmitted from a sending node, said sending node being able to handle communication according to at least two access technologies, —selecting in a selection unit in the sending node an access technology for use when transmitting the set of packets, —selecting a receiving node in the network to which to transmit the set of packets among nodes in the network that are able to handle said selected access technology—transmitting the set of packets to the selected receiving node using the selected access technology. Alternatively, a set of packets may be transmitted to one or more nodes using at least two different access technologies. Depending on the transmission quality, one node may be selected to forward the set of packets. | 2009-01-08 |
20090010270 | METHOD AND APPARATUS FOR INTERNET PROTOCOL MULTIMEDIA BEARER PATH OPTIMIZATION THROUGH A SUCCESSION OF BORDER GATEWAYS - A method for identifying alternate end-to-end media paths through internet protocol realms using substitute session description protocol parameters is disclosed. The method includes receiving an session description protocol offer, including a list of previously traversed through internet protocol realms. The method continues with determining the next internet protocol realm for a media path based on unspecified signaling criteria. Finally, the method includes that if the next internet protocol realm to be traversed through is on the list of previously traversed through internet protocol realms, bypassing at least one border gateway associated with the current and previously traversed through internet protocol realms. The system implementing a method for identifying optimal end-to-end media paths and internet protocol multimedia subsystems include a list of internet protocol realm instances, an application level gateway configured to receive a session description protocol offer having connection information and port information, and a procedure to determine that if the next internet protocol realm that the media path may traverse through is on the list of instances, the media path connection information and port information is substituted to facilitate border gateway bypassing. | 2009-01-08 |
20090010271 | POLICY CONTROL IN THE EVOLVED SYSTEM ARCHITECTURE - The invention relates to a method and system for policy control in a data packet network comprising a user equipment, a gateway and a home policy control node. The method comprises the steps of establishing a session between the user equipment and an application function. Then a session identifier is generated by the user equipment, and the same session identifier is generated by the home policy control node. The user equipment requests bearer establishment from the data packet network and marks bearer establishment packets with said session identifier. The gateway derives a user equipment identifier from the bearer establishment packets and determines policy decisions based on the session identifier and the user equipment identifier. The user equipment marks data packets sent over the established bearer with the session identifier; and the gateway applies policy and charging information for the session to the marked data packets. | 2009-01-08 |
20090010272 | Root node shutdown messaging for multipoint-to-multipoint transport tree - In one embodiment, a method comprises registering, by a first label switching router having been identified as a root of a prescribed transport tree for transport of a prescribed group of data packets, at least two next hop label switching routers as belonging to the prescribed transport tree based on receiving respective label mapping messages; detecting by the first label switching router a prescribed condition indicating the first label switching router is to be removed from service as the root of the prescribed transport tree; and outputting, by the first label switching router, label distribution protocol messages for the prescribed transport tree to each of the next hop label switching routers determined as belonging to the prescribed transport tree, each label distribution protocol message indicating the first label switching router is to be removed from the service as the root of the prescribed transport tree. | 2009-01-08 |
20090010273 | Media Stream Splicer - An implementation is described herein, which facilitates a fast channel change by receiving and decoding a unicast acquisition media stream that corresponds to a soon-to-be-requested target multicast media stream. It does this before requesting the target multicast media stream of the new channel. Once the transmission of the unicast stream is caught up with the multicast stream, this implementation splices from the unicast acquisition stream to the target multicast media stream. | 2009-01-08 |
20090010274 | DYNAMIC SELECTION OF CHANNEL ASSIGNMENT FOR PRESERVING POWER IN A WIRELESS DEVICE - A method, information processing system, and wireless communication system for dynamically assigning a communication channel to a wireless device. A request for a communication channel from a wireless device ( | 2009-01-08 |
20090010275 | MEDIUM RESERVATION WITH CHANNEL SELECTIVITY - A medium-reservation mechanism improves transmission efficiency in a multiple-channel network that includes stations with limited-selectivity receivers. The mechanism employs a medium-request signal that conveys channel information. In this network, stations check the channel information in the medium-request signal to decide whether or not to comply with the medium-request signal. If the channel information identifies the channel that is close to the channel that the station is presently operating on, the station then complies with the medium-request signal. If the channel information identifies a channel other than the channel that the station is presently operating on, the station ignores the medium-request signal. | 2009-01-08 |
20090010276 | Contention Groups for Hidden Nodes - Communicating among stations in a network includes, from each of multiple stations in the network, transmitting information indicating which other stations from which that station is able to reliably receive transmissions. A schedule for communicating among the stations is determined based on the information from the stations and transmitting the schedule over the network. The schedule includes a plurality of time slots during which respective sets of stations are assigned to communicate using a contention-based protocol. | 2009-01-08 |
20090010277 | METHOD AND SYSTEM FOR SELECTING A RECORDING ROUTE IN A MULTI-MEDIA RECORDING ENVIRONMENT - Device and method for receiving information from one or more media providers capable of transmitting a media session and from one or more media recorders capable of recording the media session and selecting one of the recorders for recording the media session based on the received information and a predetermined set of rules. | 2009-01-08 |
20090010278 | Method And Nodes For Providing Adaptive Segmentation - A method and nodes for providing adaptive segmentation in a higher protocol layer interacting with a lower protocol layer. An adaptable segmentation limit ( | 2009-01-08 |
20090010279 | Integrated Memory for Storing Egressing Packet Data, Replay Data and To-be Egressed Data - An integrated egress/replay memory structure is provided with split rate write and read ports and means for managing at least three types of data moving into, through and/or out of the integrated memory structure, namely: (1) currently egressing packet data; (2) replay data; and (3) to-be egressed data. Additionally, a shared free space (4) is managed between the storage areas of the (2) replay data and (3) the to-be egressed data. The to-be egressed data (PdBx) is allowed to enter into (to be written into) a front-end raceway portion of the integrated memory structure at a rate which can be substantially greater than that allowed for corresponding egressing packet data (PdUx). Thus, even when egressing packet data that is ahead in line is shifting out toward a slow rate egress port; this slowing factor does not slow the speed at which the to-be egressed data (PdBx) can be shifted into the front-end raceway portion. A shared free space memory area is maintained between the storage areas of the replay data (PdAx) and to-be-egressed data (PdBx). When a positive acknowledgement (ACK) is received from the destination of already-egressed data (of the After-Transmission Data, or PdAx), the corresponding replay storage area (the area storing the acknowledged PdAx data) can be reallocated for use as an empty part of the raceway portion. | 2009-01-08 |
20090010280 | TRANSPARENT SUB-WAVELENGTH NETWORK - An arrangement that allows transmission of client signals with higher clock fidelity is achieved by developing a phase offset measure at an ingress node, communicating it to the egress node, and recovering the client's clock from the received data and from the received phase-offset information. The ability to recover the client's clock with high fidelity is enhanced by adaptive pointer processing in intermediate nodes and the egress node of the network that the client's signal traverses. The adaptive pointer processing filters incoming pointers from upstream nodes and injects new positive and negative pointer justifications in excess of what is minimally necessary to allow them to be filtered by successive nodes and insure proper transmission over a network that employs a protocol involving framing layer frames embedded in communication layer frames. Illustratively, the network protocol is an extended ITU Recommendation G.709 Digital Wrapper protocol, arranged to employ frames of 15240 columns by four rows. | 2009-01-08 |
20090010281 | METHOD AND APPARATUS FOR TRANSCEIVING DATA - A method and apparatus for transceiving additional data using unallocated slots of a header of a frame used in a broadcast system are provided. A data transceiving apparatus includes a data transmitter for encoding, modulating, and transmitting a broadcast frame including a first region containing broadcast data and a second region containing additional data and a data receiver for receiving the broadcast frame, extracting at least any of the broadcast data and the additional data from the broadcast frame, and processing the broadcast data and the additional data independently. | 2009-01-08 |
20090010282 | Periodical refreshing for radio channels quality indicator - This method for receiving a data stream transmitted over several radiofrequency channels each with a different frequency, comprises scanning the bandwidth to identify available radiofrequency channels, determining a quality indicator for each available radiofrequency channel and selecting a channel for receiving the data stream depending upon said quality indicators. The method further comprises determining a refreshing period for the quality indicator of each available channel and weighting every determined refreshing period depending on the value of the quality indicator of the currently received channel. | 2009-01-08 |
20090010283 | Synchronization method of electronic apparatuses - A synchronization method is cooperated with a master apparatus and a plurality of slave apparatuses. The synchronization method includes at least a transmitting process, at least a responding process, at least a receiving process, a calculating process and a time-adjusting process. The transmitting process is for transmitting a synchronization message to at least one of the slave apparatuses through a network and recording a transmitting time by the master apparatus. The responding process is for transmitting a responding message to the master apparatus through the network and record a responding time after the slave apparatus receives the synchronization message. The receiving process is for receiving the responding message and recording a receiving time by the master apparatus. The calculating process is for calculating a time-adjusted amount by the master apparatus according to at least one set of the transmitting time, the responding time and the receiving time derived from the transmitting process, the responding process and the receiving process. The time-adjusting process is for transmitting the time-adjusted amount to the slave apparatus by the master apparatus and adjusting the time clock according to the time-adjusted amount by the slave apparatus. | 2009-01-08 |
20090010284 | INTERLEAVED CRYPTOGRAPHIC SYNCHRONIZATION - The invention relates to synchronization applied to a data stream structured as super-frames. Each block in a super-frame comprises a slow synchronization part and at least one traffic frame. The slow synchronization parts in the super-frame result at least from a decomposition of a synchronization management word. Additional synchronization parts similar to the slow synchronization parts and distributed in place of traffic frame bits in the super-frame are inserted in the super-frame. The invention provides for fast synchronization coexisting with a pre-existing slow synchronization without increasing the bandwidth. The invention is particularly applicable to cryptographic synchronization between fixed and/or mobile terminal equipments operating in interconnected dissimilar networks whose synchronization time constants differ. | 2009-01-08 |
20090010285 | Articulated robot for laser ultrasonic inspection - An ultrasonic non-destructive evaluation (NDE) system operable to inspect target materials is provided. This ultrasonic NDE system includes an articulated robot, an ultrasound inspection head, a processing module, and a control module. The ultrasound inspection head couples to or mounts on the articulated robot. The ultrasound inspection head is operable to deliver a generation laser beam, a detection laser beam, and collect phase modulated light scattered by the target materials. The processing module processes the phase modulated light and produces information about the internal structure of the target materials. The control module directs the articulated robot to position the ultrasound inspection head according to a pre-determined scan plan. | 2009-01-08 |
20090010286 | Glass for Optical Amplifier Fiber - A germanate glass composition suitable for use in a fiber amplifier for broadband amplification of optical signals is provided. The glass preferably includes 35-75% GeO | 2009-01-08 |
20090010287 | AUTOMATIC DISPERSION COMPENSATION IN AMPLIFICATION FOR SHORT PULSE FIBER LASER SYSTEM - A fiber Chirped Pulse Amplification (CPA) laser system includes a fiber mode-locking oscillator for generating a laser for projecting to a fiber stretcher for stretching a pulse width of the laser wherein the stretcher further comprising a Photonic Bandgap (PBG) fiber having a lower nonlinearity and an abnormal dispersion than a solid core fiber for connecting and transmitting a laser from the stretcher to a multistage amplifier for amplifying the laser into an output laser whereby a separate compressor is not required | 2009-01-08 |
20090010288 | FIBER MOPA SYSTEM WITHOUT STIMULATED BRILLOUIN SCATTERING - Methods and systems for increasing the threshold for stimulated Brillouin scattering are described. A seed source may generate one or more chirped seed pulses characterized by a pulse duration τ, and a frequency chirp. The pulse duration τ may be greater than about 2 nanoseconds. A photonic crystal amplifier amplifies the seed pulses to produce one or more amplified pulses characterized by a peak power P greater than about 1 kilowatt. The pulse duration τ, frequency chirp, and the photonic crystal fiber may be selected such that a threshold for stimulated Brillouin scattering (SBS) in the photonic crystal fiber is greater than the peak power P. | 2009-01-08 |
20090010289 | LASER CIRCUIT SUBSTRATE - This invention makes it possible to meet a requirement of high-quality image printing and high-speed driving of a semiconductor laser driver in a laser beam printer or the like while suppressing radiant noise. A laser circuit substrate includes a first wiring pattern and second wiring pattern connected to a main wiring pattern, a first circuit which is connected to the first wiring pattern and has a semiconductor laser element and a driving circuit for driving the semiconductor laser element, a second circuit which is connected to the second wiring pattern and compensates noise generated by the first circuit, a first capacitor which is connected to a first point in the first wiring pattern, and a second capacitor which is connected to a second point in the second wiring pattern. The positions of the first point and second point are set such that the sum of the impedances of the first wiring pattern and first circuit viewed from the first point, and the sum of the impedances of the second wiring pattern and second circuit viewed from the second point are substantially equal to each other. | 2009-01-08 |
20090010290 | Semiconductor chip and method for producing a semiconductor chip - A semiconductor chip ( | 2009-01-08 |
20090010291 | Light-emitting device with a protection layer to prevent the inter-diffusion of zinc (Zn) atoms - A light-emitting device with a protection layer for Zn inter-diffusion and a process to form the device are described. The device of the invention provides an active layer containing aluminum (Al) as a group III element, typically AlGaInAs, and protection layers containing silicon (Si) to prevent the inter-diffusion of zing (Zn) atoms contained in p-type layers surrounding the active layer. One of protection layers is put between the active layer and the p-type cladding layer, while, the other of protection layers is disposed between the active layer and the p-type burying layer. | 2009-01-08 |
20090010292 | Nitride-based semiconductor laser device - A nitride-based semiconductor laser device capable of elongating the life thereof is obtained. This nitride-based semiconductor laser device comprises a first cladding layer consisting of a first conductivity type nitride-based semiconductor, an emission layer, formed on the first cladding layer, consisting of a nitride-based semiconductor and a second cladding layer, formed on the emission layer, consisting of a second conductivity type nitride-based semiconductor, while the emission layer includes an active layer emitting light, a light guiding layer for confining light and a carrier blocking layer, arranged between the active layer and the light guiding layer, having a larger band gap than the light guiding layer. | 2009-01-08 |
20090010293 | Nitride semiconductor light emitting device and method for manufacturing nitride semiconductor light emitting device - A nitride semiconductor light emitting device includes an n-type GaN substrate ( | 2009-01-08 |
20090010294 | NITRIDE SEMICONDUCTOR LASER ELEMENT - A nitride semiconductor laser element, comprises; nitride semiconductor layers in which a nitride semiconductor layer of a first conduction type, an active layer, and a nitride semiconductor layer of a second conduction type that is different from the first conduction type are laminated in that order; a cavity end face formed by the nitride semiconductor layers; and a protective film formed on the cavity end face, the protective film has a region in which an axial orientation of crystals is different in the direction of lamination of the nitride semiconductor layers. | 2009-01-08 |
20090010295 | Distributed Feedback Semiconductor Laser Based on Reconstruction-Equivalent-Chirp Technology and the Manufacture Method of the Same - Using sampled Bragg grating structure, the present invention proposes a distributed feedback (DFB) semiconductor laser based on reconstruction-equivalent-chirp technology. Namely, the Bragg grating in the said DFB semiconductor laser cavity is a sampled Bragg grating, in which there is an equivalent grating corresponding to the original ordinary DFB grating as feedback for lasing. The laser wavelength of the said semiconductor laser located within the operation bandwidth of the said equivalent grating. The said equivalent grating is designed and fabricated using REC technology and has equivalent chirps, one equivalent phase shift or multiple equivalent phase shifts. The said sampled Bragg grating has multiple ghost gratings and the wavelength spacing between neighboring ghost gratings is inversely proportional to the sampling period and the effective refractive index of the said semiconductor laser. Only one ghost grating except the ghost grating related to the center wavelength is selected to be as equivalent grating. In semiconductor laser fields, only based on sub-micron precision, the present invention provides a method to realize various complex equivalent chirps and equivalent phase shifts in the resonant cavity of the said semiconductor laser. These equivalent chirps and equivalent phase shifts have the same functions with the corresponding true chirps and true phase shifts, so as to avoid the processes of fabrication of grating structure with complex true chirps and true phase shifts. | 2009-01-08 |
20090010296 | Optical transceiver module and method for manufacturing same - An optical transceiver module and a method for manufacturing thereof, which are adopted for providing a reduced manufacturing cost and an improved signal quality, are achieved. The optical transceiver module | 2009-01-08 |
20090010297 | VERTICAL CAVITY SURFACE EMITTING LASER ARRAY AND METHOD FOR MANUFACTURING, AND IMAGE FORMING APPARATUS USING VERTICAL CAVITY SURFACE EMITTING LASER ARRAY - A vertical cavity surface emitting laser array is disclosed which allows wires for individually driving devices arrayed at a small pitch to be provided on the laser array with ease and with a high degree of freedom is provided. The vertical cavity surface emitting laser array includes a first substrate including a plurality of vertical cavity surface emitting laser devices each having an active layer disposed between reflection mirrors constituting a resonator, and a second substrate including wires for providing electrical contact with the surface emitting laser devices and having a configuration which permits transmission of light emitted from the surface emitting laser devices. In the vertical cavity surface emitting laser array, the second substrate is bonded to the first substrate on the laser emitting side of the first substrate. | 2009-01-08 |
20090010298 | TWO-DIMENSIONAL PHOTONIC CRYSTAL SURFACE-EMITTING LASER - A two-dimensional photonic crystal formed by arranging in a lattice pattern a medium having a refractive index different from that of a medium layer formed near an active layer. The two-dimensional photonic crystal includes a distributed-feedback control photonic crystal in which a light propagating through the active layer as a core is subjected to a two-dimensional distributed feedback within a plane of the active layer, and the light is not radiated in a direction normal to the plane of the active layer, and a surface-emission control photonic crystal in which the light is radiated in the direction normal to the plane of the active layer, which are superimposed with each other. | 2009-01-08 |
20090010299 | Apparatus for Adjusting an Electrode for a Metallurgical Furnace - In an apparatus ( | 2009-01-08 |
20090010300 | Electrode Robot For Adding Electrodes Having Threaded Connectors of Various Thread Pitches - A device for adding graphite electrodes onto an electrode column is provided. This device, also known as an electrode robot, includes an engagement mechanism capable of being easily adapted to a plurality of thread pitches so that the device can add different electrodes having threaded connectors of different thread pitches. | 2009-01-08 |
20090010301 | TEMPERATURE DETECTION CIRCUIT - A temperature detection circuit includes a first voltage source circuit to generate a first voltage having a temperature dependence by utilizing a work function difference of gate electrodes of a plurality of field effect transistors, a second voltage source circuit to generate a reference voltage having no temperature dependence by utilizing a work function difference of gate electrodes of a plurality of field effect transistors, a correction circuit configured to correct the reference voltage and output a corrected voltage, and a subtraction amplifier configured to subtract the corrected voltage from the first voltage, amplify a resulting subtracted voltage, and output a resulting amplified voltage as a correction voltage signal to adjust a temperature coefficient of the correction voltage signal. | 2009-01-08 |
20090010302 | METHOD AND DEVICE FOR IDENTIFYING A TEMPERATURE SENSOR CONNECTED TO A CONTROL UNIT - A controller of a hob is connected to a temperature sensor of a radiation based heating element. In principle, two different groups of temperature sensors can be used, whose resistance values differ by approximately a factor of three. When the hob is first used, the resistance of the temperature sensor is measured at room temperature and is classified in one of the two groups of temperature sensors on the basis of a limit value between the two typical temperature profiles of the groups of temperature sensors. On the basis of this, calibration of the controller is carried out for the purpose of adjusting to the established group to which the temperature sensor belongs. | 2009-01-08 |
20090010303 | Heat Detector and Method of Manufacturing Heat Detecting Element - [Object] To provide a heat detector in which thermal responsiveness of a heat detecting unit such as a ceramic element is improved. | 2009-01-08 |
20090010304 | MICROSTRUCTURED TIME DEPENDENT INDICATORS - The invention provides an article ( | 2009-01-08 |
20090010305 | Temperature Indicator - A temperature indicator ( | 2009-01-08 |
20090010306 | Temperature Sensitive Paint for an Extended Temperature Range - A temperature sensitive paint comprises a binder for forming a polymer matrix, a transition metal complex embedded in the binder and displaying a temperature dependent fluorescence, the fluorescence of the transition metal complex showing a maximum relative temperature sensitivity per Kelvin at a first temperature, and a rare earth complex also embedded in the binder and displaying a temperature dependent fluorescence, the fluorescence of the rare earth complex showing a maximum relative temperature sensitivity per Kelvin at a second temperature. The second temperature is higher than the first temperature by 50 to 150 Kelvin so that the overall temperature range covered by both complexes as temperature probes is extended. | 2009-01-08 |
20090010307 | Receiver, Receiving Method, Program and Information Recording Medium - When a receiver ( | 2009-01-08 |
20090010308 | POWER EFFICIENT SOFTWARE RECEIVER FOR SPREAD SPECTRUM SIGNALS - The present invention relates to reception and processing of spread spectrum signals to produce position/time related data. A proposed receiver includes a radio signal processing unit, which is at least partly implemented in software running on a microprocessor. The processor is also adapted to effect at least one separate software-controlled function. The receiver is adapted to operate the radio signal processing unit on at least two processing intensity levels each with different processing times. Thereby, when the radio signal processing unit operates on a low processing intensity level, a first amount of processing capacity is available for the at least one separate software-controlled function; and when the radio processing unit operates on a high processing intensity level, a second amount of processing capacity is available for the at least one separate software-controlled function. When the processor's over-all processing capacity is constant, the second amount is smaller than the first amount. | 2009-01-08 |