Abstract: A communication apparatus (13) according to the present invention is provided with: a storage unit (131) that stored in advance difference information (1311), which is the difference between first time information (t1) and second time information (t2), said first time information (t1) being received from a synchronization source communication apparatus (11) as a time synchronization source connected to a transmission system (12) wherein transmission delay time is different depending on the direction of transmission, and said second time information (t2) obtained from a time synchronization origin (14) other than the transmission system (12); and a time synchronization means (132) that carries out, when the second time information (t2) cannot be obtained from the time synchronization origin (14), time synchronization with the synchronization source communication apparatus (11) using the difference information (1311) read out from the storage unit (131).

Abstract: An indexing arrangement enables efficient search and retrieval of indexes persistently stored in a metadata repository and used to locate packets captured from a network and persistently stored in a data repository. The packets are captured at a packet capture and retrieval system having persistent storage devices organized as files of the metadata and data repositories. Search and retrieval of the indexes within the files of the metadata repository occur at substantially a same time as one or more other captured packets is written to one or more files of the data repository to realize a substantially high sustained packet transfer rate of the network.

Abstract: Disclosed are a method and a device for detecting a fault in a synchronization link. The method includes: setting one or more reference nodes corresponding to a node to be detected (101); when the node to be detected starts a detection function, acquiring reference time from the one or more reference nodes and acquiring synchronization time from a synchronization path (102); and determining, by the node to be detected, whether there is a fault in the synchronization link between the node to be detected and a Grandmaster Clock (GM) node by using all the reference time and the synchronization time (103).

Abstract: Disclosed embodiments relate to a system that changes transmitter and/or receiver settings to deal with reliability issues caused by a predetermined event, such as a change in a power state or a clock start event. One embodiment uses a first setting while operating a transmitter during a normal operating mode, and a second setting while operating the transmitter during a transient period following the predetermined event. A second embodiment uses similar first and second settings in a receiver, or in both a transmitter and a receiver employed on one side of a bidirectional link. The first and second settings can be associated with different swing voltages, edge rates, equalizations and/or impedances.

Abstract: A network system includes a synchronous master device to output a cooperative-operation timing signal in a cooperative-operation cycle, a time master station connected to a network, and a time slave station connected to the network. The time master station includes a master clock to count a time, and a master generation unit to generate master cooperative-operation-time information on the basis of the cooperative-operation timing signal and the time counted by the master clock. The time slave station includes a slave clock to count a time, and a slave generation unit to generate slave cooperative-operation-time information on the basis of the master cooperative-operation-time information and the time counted by the slave clock.

Abstract: A packet network that includes the distribution of timing information (time and frequency) between server and client devices can continue to operate in a holdover mode even when the server loses its primary timing reference based on GNSS. This is achieved by populating the packet network with some client devices that also have access to the same timing reference. These devices are used in a reverse timing transfer mode to provide a hack-up reference to the server and thereby provide a graceful solution to the problem of loss of reference.

Abstract: A transparent clock may be provided between edge nodes of a non-precision time protocol network, with an arrival time of a packet at an edge of the non-precision time protocol network carried in a reserved field of a packet.

Abstract: Systems and methods for fixed delay video switching. One embodiment of the system describes a fixed delay video communication link, which includes: a real-time video encoder (RT-VE) that receives an incoming high-definition uncompressed video (HD-UV), compresses the incoming HD-UV into first or second HD compressed video, and transmits the HD compressed video over a communication link to a real-time video decoder (RT-VD). The RT-VD decompresses the HD compressed video into an outgoing HD-UV. And wherein on-the-fly switches between the first and second compression ratios, while continuing to receive the incoming HD-UV uninterruptedly, are both visually lossless and maintain the same fixed delay between corresponding pixels of the incoming HD-UV and the outgoing HD-UV.

Abstract: Personal settings for each user and each application are stored in personal setting holding units 311 and 310. When a personal setting is to be exported, synchronous control information indicating whether or not synchronization is to be performed for each personal setting is exported. In the case where the firmware version of an apparatus that is to import the information indicates synchronization of the personal setting, the personal setting is rewritten in accordance with the synchronous control information.

Abstract: Control of a digital communication system having a plurality of communication lines on which signals are transmitted and received is implemented using a variety of methods and systems. According to one embodiment of the present invention, a method is implemented where the signals are affected by interference during transmission and each of the communication lines has at least one transmitter and at least one receiver. A model is created of the interference characteristics due to the signals carried on the communication lines. Interference characteristics for a line are determined based on the model and actual signals carried on other communication lines different from the line for which the characteristics are being determined. Actual interference is compensated for on the communication line using the determined interference characteristics.

Abstract: A system for synchronous media rendering over wireless networks with wireless performance monitoring, comprising a media source device and a plurality of destination devices, a quality analysis module operating on at least one of the devices to monitor the media being streamed and direct the operation of a synchronization module, and a synchronization module operating on at least one of the devices to direct the rendering of media data based on received event data and to transmit event data to at least a portion of the destination devices, and a method for common event-based multidevice media synchronization and quality analysis.

Abstract: A method for transmitting an uplink includes: an STA1 transmitting to an AP each of multiple RTS frames through at least one channel from among multiple first channels; the STA1 receiving from the AP at least one CTS frame through at least one channel from among the multiple channels which have received the RTS frames; and an STA2 receiving from the AP at least one CTS frame through at least one channel from among multiple second channels, wherein the at least one CTS frame includes STA identifier information and channel information, the STA identifier information includes information for indicating the STA1 and the STA2, and wherein the channel information includes information on an uplink channel1 allocated for transmitting a data frame1 of the STA1 and information on an uplink channel2 allocated for transmitting a data frame2 of the STA2.

Abstract: Method(s) and system(s) for providing an optimal trade off point between privacy of a private data and utility of a utility application thereof are described. The method includes quantifying privacy content of a private data associated with a user based on uniqueness of information in the private data, where the private content comprises sensitive information about the user. The method further includes determining a privacy-utility trade off point model based on analytical analysis of the privacy content, a privacy requirement of the user, and a utility requirement of third party to which the private data is disclosed, where the privacy-utility trade off point model is indicative of optimal private data sharing technique with the third party. Furthermore, the method also includes identifying privacy settings for the user based on risk appetite of the third party, utilizing the determined privacy-utility tradeoff point model.

Abstract: A method transmitting packets in a wireless network including a node, a first data sink and a second data sink is disclosed. The method performs a synchronization of the node with the first data sink and the second data sink and transmits first data packets from the node to the first data sink at a first allocated time synchronized with the first data sink. Next, the method transmits second data packets from the node to the second data sink at a second allocated time synchronized with the second data sink. The first and the second data packets are transmitted without updating the synchronization.

Abstract: A centralized master device receives audio, down-mixes the audio to stereo if it is not already in stereo, and then up-mixes (renders) the stereo into as many channels as there speakers in the network. The up-mixing can be based on the number and locations of the speakers, which may be determined automatically using a real time location system such as ultra wide band (UWB) location determination techniques. The master device sends each speaker its respective channel.

Abstract: At least one processor that performs at least one of determine at least two audio signals, determine at least one directionality of at least one audio source from the at least two audio signals, determine at least one timing of the at least one audio source from the at least two audio signals, generate at least one context for the at least two audio signals based on the at least one directionality and the at least one timing of the at least two audio signals, and provide at least one user interface based on the generated at least one context.

Abstract: A method and apparatus for allocating channels for a wireless communication local area network are presented. A system includes a console and a plurality of nodes controllable by the console through wireless communication. At least two nodes are connected in series, each of the nodes being configured to transmit signals in turn. A trigger signal is sent to a first node, and a first response signal sent by the first node in response to the trigger signal to determine that the first node is available. A first wireless channel is allocated for wireless communication between the console and the first node, and for sending information including the allocation of the first wireless channel to the first node, whereupon the first node transmits the trigger signal to a second node adjacent to the first node after confirming that the allocation of the first wireless channel has been completed.

Abstract: A wireless communication device providing a node in an industrial wireless network investigates if there is more than one data packet with process control data from the same data originating device destined for a process control device in a transmission queue, where the data originating device is an interface to the process being controlled and transmits data packets in the transmission queue. If there is more than one such data packet, the wireless communication device further compares time stamps of the data packets, where a time stamp reflects the time of generation of a corresponding data packet, keeps the newest data packet and discards older data packets, so that only the most recent data packets from a data originating device are sent to the process control device from the node.

Abstract: Embodiments disclosed herein generally relate to a method, computer program product, and system to seamlessly integrate a multimedia presentation with triggered content provided using one or more external devices. The method includes processing a presentation script that specifies (i) one or more accessible audiovisual content items and (ii) a sequence of the audiovisual content items for presentation during the multimedia presentation. The method also includes transmitting the one or more audiovisual content items to one or more audiovisual output devices according to the sequence, and transmitting control signals to the one or more external devices to operate the external devices according to timing information included in the presentation script and with reference to at least one of the audiovisual content items, thereby seamlessly integrating content provided using the external devices with the multimedia presentation.

Abstract: Technologies for performing access control include a computing device that parses a network packet received by the computing device to identify an n-tuple of a header of the network packet, wherein the n-tuple is associated with one or more access control rules. The computing devices determines a bitmask associated with an access control rule of a virtual machine of the computing device and applies the determined bitmask to the n-tuple of the network packet to generate a masked n-tuple. Further, the computing device generates a hash of the masked n-tuple and compares the generated hash to a reference hash associated with the access control rule to identify a match. The computing device performs an access control action in response to identifying a match between the generated hash and the reference hash.

Abstract: A method of managing data in a data queue includes analyzing media currently being played, or to be played by a first computing device functioning as a leader to identify an offset into the media and a timestamp corresponding to the offset. A buffer duration is calculated that corresponds to an amount of time that the data queue takes to output data currently in the data queue. The media is played at the leader and a second computing device functioning as a follower, in a substantially synchronized manner, by inputting data to the data queue at a specified time based on the calculated buffer duration, the offset, and the timestamp.

Abstract: A user equipment device (UE) comprises physical layer circuitry configured to transmit and receive radio frequency electrical signals with one or more nodes of a radio access network, an audio subsystem configured to generate frames of audio data, and processing circuitry. The processing circuitry is configured to calculate a time delay from generation of an audio data frame by the audio subsystem of the UE device to transmission of an audio data packet by the physical layer circuitry during a voice call, and decrease the time delay to a delay value that preserves a specified minimum time for delivery of the generated audio data frame to the physical layer circuitry to meet a scheduled transmission time of the audio data packet.

Abstract: A method of reducing power consumption is provided. The method includes categorizing a plurality of cells including a serving cell into an identified cell set and a non-identified cell set based on received power of the plurality of cells, measuring received power of the plurality of cells including the serving cell based on a first measurement period during a first time interval, determining whether received power of the serving cell is greater than a predefined threshold or whether a number of cells included in the identified cell set or a configuration of the plurality of cells changes, or if one of the received power of the serving cell is greater than the predefined threshold and if the number of cells included in the identified cell set or the configuration of the plurality of cells does not change, changing the first measurement period to a second measurement period.

Abstract: A system, computer readable medium, and method are provided for training a serial communication link to perform crosstalk cancellation. The method includes the steps of, for each crosstalk channel of one or more crosstalk channels, transmitting a training sequence over a crosstalk channel, estimating a phase offset associated with the crosstalk channel, and selecting a set of symbol response coefficients. The method further includes steps for configuring the serial communication link to perform crosstalk cancellation utilizing the selected set of symbol response coefficients and, for each crosstalk channel, updating the selected set of symbol response coefficients every number of Baud durations corresponding to the crosstalk channel.

Abstract: An active search method in a wireless LAN system is disclosed. The active search method comprises the steps of: transmitting, through an arbitrary channel, a preceding probe request frame for confirming the existence of an access point; acquiring, from at least one access point, a probe ACK frame that is a response to the preceding probe request frame; setting a maximum waiting time on the basis of the number of probe ACK frames; and performing an active search for an access point in the arbitrary channel for the maximum waiting time. Therefore, the waiting time for receiving a probe response frame can be reduced.

Abstract: A method and an apparatus for transmitting broadcast signals thereof are disclosed. The method for transmitting broadcast signals including encoding DP (Data Pipe) data carrying at least one service, mapping the encoded DP data onto constellations, time interleaving the mapped DP data, building a signal frame including the time interleaved DP data, modulating data in the built signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme, and transmitting the broadcast signals having the modulated data, wherein the broadcast signals are carried in consecutive super frames, wherein each of the super frames includes multiplexed signal frames for different service in a time domain, wherein the signal frame includes a preamble located at the beginning of the at least one signal frame, wherein the preamble includes signaling information for identifying the signal frame.

Abstract: The invention relates to a method of synchronizing clocks of at least two devices in a network and a corresponding wireless device for synchronizing its clock with another wireless device. The method comprises steps of: transmitting a synchronization signal to said at least one second device to determine at least one time offset between a clock of the first device and at least one clock associated with said at least one second device; receiving said at least one time offset from said at least one second device; determining a time interval for the first device based on a time offset parameter corresponding to said at least one time offset, after which time interval the first device transmits a next synchronization signal to said at least one second device. With this method, the radio station is able to reduce its power consumption when the time offset between the first device and the second device is small.

Abstract: The various embodiments herein provide a method and system for synchronization of links and attachments during synchronization between source and target devices. The system for executing synchronization between the source and target devices comprises a connector framework, a process framework, a mapping manager, a recovery manager, a conflict manager and a failure manager. The method comprises getting the “as of state” of the attachment that is old and new attachment information list for the revisions, then the system having history for the attachment constructs “as of state” and send as part of the event and system not having history for the attachment, stores attachment information in the history state table with the source update time information in poller as well as the time of adding attachment from the adapter.

Abstract: A device may determine a link master/slave relationship for an Ethernet link associated with a connection between a component of the device and a component of another device. The device may determine that Synchronous Ethernet (SyncE) is to be enabled on the Ethernet link. The device may identify the component of the device as a SyncE slave or a SyncE master associated with enabling SyncE on the Ethernet link. The device may provide an indication that the component of the device has been identified as the SyncE slave or the SyncE master. The device may determine a SyncE master/slave relationship associated with enabling SyncE on the Ethernet link. The SyncE master/slave relationship may supersede the link master/slave relationship without altering the link master/slave relationship. The device may cause the component of the device to recover a clock based on the SyncE master/slave relationship rather than the link master/slave relationship.

Abstract: A system and method for generating a timestamp without processor core execution stall are provided. For example, the method includes generating, using a first processor core, a timestamp. The method also includes preventing, using the first processor core, a second processor core from accessing the timestamp for a minimum time granularity interval. The time granularity interval provides a delay such that the timestamp generated by the first processor core is earlier in time than a second processor core timestamp.

Abstract: Locating a frequency deviation in a communication network is provided. A node clock frequency is assigned to each internal clock of each network node. Messages are transmitted synchronizing the internal clocks. The synchronization messages are transmitted from one node to another in succession based on a reference clock frequency predefined by a reference clock. The synchronization messages include a reference clock count state of the reference clock. Synchronization deviations are calculated at predefined intervals of time. If the synchronization deviation of the middle network node exceeds a threshold value, a change in the reference clock frequency is detected if the synchronization deviations of adjacent nodes. Otherwise, a change in the node clock frequency of the middle network node is detected.

Abstract: The present application discloses a method of performing group communication using user equipment (UE) in a wireless communication system. In particular, the method includes: detecting a first group of discovery signals having a first tier counter value; generating a second group of discovery signals having a second tier counter value by using the first value; and transmitting the second group of discovery signals to another UE, wherein the tier counter indicates a tier value to which the UE belongs based on an initially activated UE or base station in the group communication.

Abstract: In a method for synchronizing a control unit and at least one peripheral unit having actuators and/or sensors, the control unit and the peripheral unit exchange data with each other via a serial interface. The control unit transmits data to the at least one peripheral unit which is processed in the peripheral unit for the operation of the actuators and/or sensors, and at least one synchronization character is transmitted from the control unit to the peripheral unit for the synchronization. In this context, the synchronization character is appended by the control unit to a first data sequence of a data stream to be transmitted from the control unit to the peripheral unit, and the transmission of a second data sequence to be transmitted after the first data sequence is delayed in time on the part of the control unit, so that the second data sequence is transmitted by the control unit to the peripheral unit following the synchronization character.

Abstract: The present invention generally relates to methods and apparatus for precision time transfer wherein the inherent packet delay variation and possible asymmetry introduced in networks is avoided or mitigated. In one embodiment, the timing functions of a master device may be placed closer to a slave device using a Remote Time-Stamp Generator, located in the network between the master and the slave, and whose time reference serves as a proxy for the time reference of the master. Time-of-traversal of packets at the remote time-stamp generator may be used as proxies for the time-of-departure and the time-of-arrival of certain messages at the master. Such proxy times may be used to synchronize the slave with the master, particularly if the master and the Remote Time-Stamp Generator are both synchronized with a Global Navigation Satellite System (GNSS) source.

Abstract: In accordance with some embodiments of the present disclosure, a method for initializing a network interface comprises monitoring a stream of data sent to a network interface and determining that a provisioning update for the network interface is complete. The method may further comprise sending provisioning data to a local file of the network interface, storing the provisioning data in the local file, and initializing an interface control module of the network interface based on the provisioning data stored in the local file.

Abstract: Embodiments of the claimed subject matter provide a method and apparatus for providing multicast/broadcast information to obstructed user equipment. Some embodiments of the apparatus include a gateway configured for communicative coupling to an antenna. The gateway is configurable to establish a first broadcast/multicast session for receiving at least one broadcast or multicast service associated with user equipment and establish a second session for providing information received in the first broadcast/multicast session to the user equipment. Some embodiments include user equipment are configurable to provide a request to receive a broadcast service or a multicast service from a gateway that receives the broadcast or multicast service(s) via a first broadcast/multicast session. Some embodiments of the user equipment are also configurable to establish a second session with the gateway for receiving the broadcast or multicast service(s).

Abstract: Disclosed is an audio/video signal synchronization method which includes: acquiring a delay data value of an audio signal formed by a wireless module of an audio/video signal synchronization apparatus and a wireless audio device; according to a display format of a video data to be played, calculating playing time of each frame of the video data to be played; according to the delay data value and the playing time of each frame, calculating the number of frames to be buffered, and generating and buffering the frames with the corresponding number; and according to an audio/video playing instruction, playing the buffered frames and the video data to be played sequentially, and transmitting audio data corresponding to the video data to be played to the wireless audio device to play the audio data while playing the buffered frames. Also disclosed is an audio/video signal synchronization apparatus.

Abstract: This invention relates to methods and devices for time transfer. The invention has particular application in the alignment of slave clocks to a master clock and dealing with packet delay variations. In embodiments of the invention, the slave clock uses the residence times measured by end-to-end transparent clocks to compensate for clock synchronization errors that arise due to variability in message transfer delays. Embodiments provide a simple linear approximation technique and a Kalman filter-based technique for estimating offset and skew of the slave clock.

Abstract: Systems and methods are disclosed for listening window adjustments for power savings in BLE (Bluetooth low energy) communications. BLE devices determine time differences between assumed transmission times and actual receive times for packets transmitted by another BLE device. The BLE device then adjusts a listening window using the time differences, for example, to reduce the size of the listening window based upon the time differences. The adjusted listening window is then used by the BLE device to listen for and receive additional packets from the other BLE device.

Abstract: This invention relates to methods and devices for time synchronization. The invention has particular application in the alignment of slave clocks to a master clock and in dealing with packet delay variation and dynamic asymmetries in the network links between them. In embodiments of the invention, the slave clock uses the peer link delay and residence times measured by peer-to-peer transparent clocks to compensate for clock synchronization errors that arise due to variability in message transfer delays. Embodiments provide a simple linear approximation technique and a Kalman filter-based technique for estimating offset and skew of the slave clock.

Abstract: A method for increasing the robustness of a mechanism for a vehicle including the steps of determining a primary function of the mechanism, identifying components of the mechanism used during the primary function, analyzing each component under in-specification conditions, analyzing each component under decreasing out-of-specification conditions during performance of the primary function to determine a lower failure value for each component, analyzing each component during performance of the primary function under increasing out-of-specification conditions to determine an upper failure value for each component, determining a modified robustness value for each component, wherein the modified robustness value is between the lower and upper failure values and modifying each component in the vehicular mechanism to have a robustness that is approximately the modified robustness value of the respective component.

Abstract: The method and apparatus for detecting in a receiver a transmitter local time, comprising determining a reference time for the transmitter local time; receiving from the transmitter a transmission time duration signal that elapsed on the transmitter since the reference time for the transmitter local time; and determining the transmitter local time based on the reference time for the transmitter local time and the received transmitter time duration. A time stamp signal based on the transmitter local time signal is generated at the receiver and is superimposed on the sensor data stream transmitted to the receiver. Consequently, the advantage is provided that a data stream can be transmitted without the incorporation of any time stamp.

Abstract: Uploading storage data. A method includes determining a file protocol for a local file including determining sparseness for the local file. Based on the sparseness for the local file, the local file is uploaded to a remote service, while preserving sparseness by not uploading data that the remote service can imply based on the sparseness.

Abstract: A real-time distributed network slave module is described. The real-time distributed network slave module comprises a first communications component arranged to transmit and receive real-time distributed network data over at least a first real-time distributed network connection, at least one further communications component arranged to transmit and receive real-time distributed network data over at least one further real-time distributed network connection, and at least one processing component.

Abstract: A receiver recovers local service data symbols from first Orthogonal Frequency Division Multiplexed (OFDM) symbols in the presence of second OFDM symbols, the second OFDM symbols carry national broadcast data symbols and modulated on to the sub-carriers of the second OFDM symbols using a first modulation scheme, and the first OFDM symbols carry the national broadcast data symbols and the local service data symbols from a local insertion pipe and modulated on to the sub-carriers of the first OFDM symbols using a second modulation scheme.

Abstract: A reproduction system has a content reproduction section 220 that reproduces a content having a cycle; a special reproduction operation section 230 that performs special reproduction on the content by which the content is reproduced at a reproduction position different from a normal reproduction return position at a time of normal reproduction reproduced normally; a special reproduction process section 235 that makes the content reproduction section 220 perform the special reproduction based on an operation of the special reproduction operation section 230; and a return process section 250 that matches the normal reproduction return position of the content with a position corresponding to cycle timing with which the normal reproduction continues without the special reproduction when the normal reproduction returns after the special reproduction is cancelled in case that the special reproduction is performed.

Abstract: The present invention is to display a caller's user profile and a previously set content to a callee. The present invention provides a user profile display user terminal and a user profile display system that use a user profile server 200 to centrally manage the user profile of a caller who makes an outgoing call with a phone terminal 50, allow a callee who owns a user terminal 10 to set a content to be displayed or allow a caller to set the content to be displayed to a callee, depending on a caller, store the set content in a user profile database 250, so as to display the user profile and the content when the callee receives an incoming call and also so as to display a call log and an answering machine log that are related to the caller.

Abstract: When attempting to establish a peer-to-peer connection, a computing device can quickly discover compatible devices, which are capable of exchanging content, and remember them. When a neighboring device is discovered during a scan, the computing device can determine whether the neighboring device is capable of sharing content. Once it is determine that the neighboring device can share content, the computing device can determine a history of previous connections with the neighboring device. The computing device can determine a priority for sharing content with neighboring device relative to other devices. The computing device can determine the priority based on the history of the neighboring device and the history of other devices so that the devices with a likelihood of new content receive a higher priority.

Abstract: An encoding device performing an encoding process according to an encoding scheme using a CTS indicating time at which presentation or reproduction is performed, comprising: an encapsulator that generates a media unit in which one or more access units encoded by the encoding scheme are capsulated, and a transmitter that transmits information indicating an absolute time of an access unit included at a top portion of the media unit, in addition to the media unit, wherein the encapsulator adds a CTS relative value to the nth access unit included in the media unit, the CTS relative value being a difference between the CTS of the nth access unit and the DTS of the n+1th access unit.

Abstract: A method determines voltages of buses of a power system. Values the voltages include a magnitude and a phase angle. The buses of the power system are grouped in a first area and a second area based on a type of measurement associated with each bus. The first area and the second area have at least one common bus, and wherein at least one bus in the first area is associated with a first type of measurement, and at least one bus in the second area is associated with a second type of measurement. Next, the method determines sequentially voltages of the buses of the first and the second areas.