Abstract: A communication control apparatus includes a packetizing unit configured to generate packets based on coded data; a calculating unit configured to calculate, based on at least one of information regarding the amount of code of the coded data, reception state information indicating a reception state of a reception device serving as a transmission destination to which the packets are to be transmitted, information regarding the effective speed of a communication line to be used for transmission of the packets, and information regarding an available capacity of a communication channel that can be ensured for communication of the packets, the number of packets to be continuously transmitted; and a transmitting unit configured to continuously transmit, via the communication line to the reception device, packets corresponding to the number of packets calculated by the calculating unit.

Abstract: A transmission apparatus of the present invention includes an encoder unit configured to encode data including plural layers for each of the layers, a packetizing unit configured to generate a packet based on the data encoded by the encoder unit, a determination unit configured to determine transmission intervals at which the generated packet is transmitted for each of the layers, and a transmission unit configured to transmit the generated packet at the determined transmission intervals, wherein the transmission intervals are changed for each specified packet, where the change varies with each of the plurality of layers.

Abstract: An outlet (70, 75, 76, 78, 79) for a Local Area Network (LAN), containing an integrated adapter (21, 25) that converts digital data to and from analog video signal. Such an outlet allows using analog video units in a digital data network (80), eliminating the need for a digital video units or external adapter. The outlet may include a hub (31, 41) that allows connecting both an analog video signal via an adapter, as well as retaining the data network connection, which may be accessed by a network jack (73). The invention may also be applied to a telephone line-based data networking system. In such an environment, the data networking circuitry as well as the analog video adapters are integrated into a telephone outlet, providing for regular telephone service, analog video connectivity, and data networking as well. In such a configuration, the outlet would have a standard telephone jack (71), an analog video jack (72) and at least one data networking jack (73).

Abstract: A method is disclosed that includes measuring, during a measurement period, values corresponding to noise and interference signals received from a channel. The measurement period coincides with a period when no signal is transmitted on the channel. The method also includes determining one or more thresholds based upon the measured values. Second signals that correspond to a message are received on the channel. The message includes an indicator having a number of possible states. A value is determined corresponding to the indicator based upon the second signals. One of the possible states is assigned to the indicator of the received message based upon the one or more thresholds and the determined value.

Abstract: The present invention relates to a method for providing multimedia data, and more particularly, to a method for providing multimedia data in which a predetermined fee is received from a user who wants multimedia data, and in this case, the user is enabled to download the multimedia data unrestrictedly for a predetermined period corresponding to the fee and play the downloaded multimedia data in various media of the user. According to the present invention, there is provided a method for providing multimedia data, enabling a user who pays a flat fee to download and play multimedia data unrestrictedly for a certain period, thereby reducing a user burden for download of multimedia data.

Abstract: Systems and methods for communicating control information in slots that use at least two different slot formats. In one embodiment, a method implemented in a wireless communication system includes providing at least two different slot formats, formatting control data in the slots of a control frame according to the at least two different slot formats, transmitting the control frame from a mobile station to a base station via a control channel, receiving the control frame, extracting data rate information from the control frame according to the at least two different slot formats, decoding the extracted control data, parsing the extracted data into separate data rate information and decoding data received via one or more data channels using the decoded control data. In one embodiment, the method is used to enable additional TFCI data corresponding to two different data channels to be transmitted on a single control channel.

Abstract: A hardware-implemented video broadcasting receiver is described that is capable handling back-to-back and parallel time slices in an efficient manner, thereby providing improved receiver performance. In one implementation, the hardware-implemented video broadcasting receiver is capable of handling back-to-back time slices of up to 2 Megabits (Mbits) each and, depending upon the MPE-FEC frame size associated with each time slice, up to 8 parallel time slices or up to 4 parallel time slices transmitted back-to-back with 4 other parallel time slices. The hardware-implemented video broadcasting receiver advantageously permits more efficient and flexible use of the available spectrum and increases interoperability with other DVB-H compliant equipment.

Abstract: Data to be more robustly transmitted within 8VSB broadcast DTV signals are turbo coded using parallelly concatenated convolutional coding (PCCC) and incorporated within the segments of data fields, the bytes of which are convolutionally interleaved before trellis coding and 8VSB symbol mapping. Packing the PCCC into payload fields of MPEG-2-compatible null data packets and Reed-Solomon coding the packets to generate the segments of data fields, the bytes of which are convolutionally interleaved, conditions legacy DTV receivers to disregard PCCC components not useful to them. Transversal packing turbo-coded Reed-Solomon codewords into the payload fields of MPEG-2-compatible null data packets increases the capability of those turbo-coded Reed-Solomon codewords to overcome burst errors. Repeated transmissions of the transversally packed turbo-coded Reed-Solomon codewords in whole or in part allows them to overcome protracted deep fades encountered during mobile reception of 8VSB DTV signals.

Abstract: An electronic device is provided which comprises an interconnect means (N) for coupling a plurality of processing modules (IP1-IP5) to enable a communication between the processing modules (IP1-IP5). The electronic device further comprises a plurality of network interfaces (NI) for coupling the interconnect means (N) to one of the processing modules (IP1-IP5). Furthermore, at least one time slot allocating unit (SA) is provided for allocating time slots to channels of the interconnect means (N). The time slot allocating unit (SA) comprises a plurality of slot tables (TO-T4) with a plurality of entries. Each entry corresponds to a fraction of the available bandwidth of the interconnect means (N). A first slot table of the plurality of slot tables (TO-T4) comprises at least one first entry of the plurality of entries which relates to a second slot table of the plurality of slot tables (TO-T4).

Abstract: A system and method for providing faster tuning into a chosen program in a time-sliced multicast and/or broadcast transmission environment. Multimedia data of the same source material but of different transmission and presentation characteristics are coded and compressed. According to various embodiments, simulcast streams of a program are time-sliced, placed maximally apart from each other in terms of transmission time, and sent over the channel.

Abstract: There are disclosed apparatus and methods for scheduling packet transmission. At least one scheduled traffic queue holds a plurality of scheduled packets, each scheduled packet having an associated scheduled transmit time. At least one unscheduled traffic queue holds plurality of unscheduled packets. A packet selector causes transmission of scheduled packets from the scheduled traffic queue at the associated scheduled transmit time, while causing transmission of unscheduled packets from the unscheduled traffic queue during the time intervals between transmissions of scheduled packets.

Abstract: A communication system sets the data transmission time which is the time suitable for data transmission and the quasi-data transmission time which is the time other than the data transmission time in a period in accordance with the transmission path. Further, bits are assigned and transmitted in such a manner that data for one period can be transmitted during the data transmission period for that period and the data can be uniformly distributed over the data transmission time for the period.

Abstract: The present invention is related to buffering between synchronous circuits communication via a global synchronous bus, and in particular an arrangement for reducing the busload in a TDM bus system by, in a preferred embodiment, introducing a local TEM data bus and an active buffer including a CPU controlled logic between the transceiver loads and the TDM bus. The active buffers in the TX and RX direction together provides a time delay for data travelling from a first local TDM bus out on the backplane TDM bus and back to a second local TDM of the exact duration of one TDM frame or an integer number of TDM frames.

Abstract: An intermixing communication modes on a TDMA network system. The system includes a relay, at least one AC channel controller, at least one DC channel controller, at least two AC users and at least one DC user. The at least one AC channel controller is capable of transmitting a master channel frame and receiving data on a master channel. The at least one DC channel controller is capable of transmitting data on a slave channel frame and receiving data on a slave channel associated with the master channel. The at least two AC users are capable of transmitting and receiving signals via the relay. The at least one DC user is capable of receiving information regarding reserved DC time slots in the slave channel frame from a CCOW of the master channel frame. A method for an intermixing communication modes on a TDMA network is also described.

Abstract: A retransmission method and system for time-constrained video packet transmission between a sender and a receiver, wherein the retransmission deadline of each packet is individually adjusted based on the actual decoding time deadline at the receiver decoder. Accordingly, variable retransmission deadlines are set corresponding to the decoding and playback time for each data packet which carries compressed video information. As such, both network efficiency and video transmission quality are improved compared to the conventional retransmission approaches.

Abstract: A contents reproducing apparatus includes a receiving unit configured to receive a plurality of packets that convey an elementary stream containing encoded video or audio data and time information, a detecting unit configured to detect a discontinuity of timebase if the difference between first time information contained in a first packet and second time information contained in a second packet received before the first packet is larger than a first threshold value, a timer configured to output the current time after a second threshold value smaller than the first threshold value elapses from a time to receive the first packet, and a generating unit configured to generate a third packet including a third time information calculated based on the first time information and transfer the third packet to the receiving unit, when receiving the current time from the timer.

Abstract: A method for switching multi-rate communications is described. The method includes filling a first set of p timeslots with p sets of data from a first data collection of a first type, where the first data collection includes m sets of data and p is less than m. The method also includes loading at least one overflow timeslot with at least one overflow set of data from the first data collection, where the overflow set of data exceeds a size of the first set of p timeslots.

Abstract: A method and apparatus for providing a technique to transfer two digital video signals synchronously across a bus sharing the same pixel clock and data bus.

Abstract: In a telecommunication system adapted to exchange n-bit frames according to a dynamic time division multiplexing access method for a maximum of N accessible channels, the use of a shadow time slot assignment table is eliminated by use of a circuit that includes (a) an n×p memory block to store a time slot assignment table which describes the different time slot assignments by specifying which logical channel each bit position of an n-bit frame belongs to, (b) a register having N fields with a granularity of one bit, each bit indicates the status of the corresponding logical channel associated thereto, and (c) a logic circuit connected to the memory block and register that enables or disables the transmission of the logical channel identifier to a time slot assignor depending on the status bit value.

Abstract: In some embodiments of the invention, OFDM symbols are transmitted as a plurality of clusters. A cluster includes a plurality of OFDM sub-carriers in frequency, over a plurality of OFDM symbol durations in time. Each cluster includes data as well as pilot information as a reference signal for channel estimation. In some embodiments, a plurality of clusters collectively occupy the available sub-carrier set in the frequency domain that is used for transmission. In some embodiments of the invention data and/or pilots are spread within each cluster using code division multiplexing (CDM). In some embodiments pilots and data are separated by distributing data on a particular number of the plurality of OFDM symbol durations and pilots on a remainder of the OFDM symbol durations. CDM spreading can be performed in time and/or frequency directions.

Abstract: A wireless communications system includes a shared TDM data channel for communications in different time slots with respective mobile stations (MSs), as well as dedicated channels. A first medium access control (MAC) multiplexing sublayer, provided in a base station controller, maps information of logical channels for communications services to the communications channels. A second MAC multiplexing sublayer maps information, mapped to the shared data channel in the first MAC multiplexing sublayer, to respective data units for communication in respective TDM time slots of the shared channel. The second MAC multiplexing sublayer handles scheduling, adaptive modulation and coding, and automatic retransmission of information on the shared data channel, as well as shared control channels for the shared data channel and channel quality feedback and data acknowledgement channels from the MSs.

Abstract: System and method for partitioning a DSLAM network. In this regard, one such network can be broadly summarized by a representative communication system comprising a digital subscriber line access multiplexer (DSLAM) that is communicatively coupled on its line-side to a high-speed digital link. The DSLAM is communicatively coupled through the high-speed digital link with the trunk side of a remote line access unit (RLAU). The RLAU is communicatively coupled on its line-side to a first digital subscriber line (DSL).

Abstract: A method for adapting the rates of a certain number of asynchronous HDLC channels (15) to a single clock domain suited for interfacing with an HDLC processor (13) through a synchronous pseudo-TDM interface (14) in which the HDLC channels are multiplexed in time and vice versa in the opposite direction. In one direction the algorithm is based on the writing of the HDLC channels in a dedicated buffer (17) and in reading these buffers with a common synchronous clock just above the expected maximum HDLC rate. The under-run condition is avoided by inserting neutral information between the end byte and the start byte of the HDLC packets when this is suggested by the buffer fill monitoring function. A simple function to locate the first and last bytes of each HDLC packet read by the buffer is hence used in combination with the buffer fill monitoring function.

Abstract: A method and data structure for transmitting data in a networked system having a shared transmission medium that includes generating a plurality of virtual packets each containing information for delivery to at least one selected terminal in the networked system via the shared medium and generating a map field having control information for controlling the delivery of the virtual packets. The method and data structure also include forming a physical packet for transmission across the shared transmission medium, the physical packet including a control field and the plurality of virtual packets such that overhead associated with the control field and medium access is amortized over the plurality of virtual packets.

Abstract: An optical signal connection apparatus includes first and second routers configured to handle optical signals and electrical signals. A first node includes a first port coupled to the first router and is configured to handle a first type of optical signals associated with the first route; a first line-setting unit configured to couple the first and second nodes for data communication between the first and second nodes; a first control unit to control setting an optical communication link between the first and second nodes; and a first signal-type storage unit. A second node includes a second port coupled to the second router and configured to handle a second type of optical signals, wherein the first information is compared with second information on the second type of optical signal to determine whether the first and second communication links are compatible to each other.

Abstract: Method and system for routing fiber channel frames using a fiber channel switch element is provided. The method includes, inserting a time stamp value in a fiber channel frame that is received at a receive segment of the fiber channel switch element; determining if a timeout occurs after a frame arrives at a receive buffer; and processing the frame if the timeout occurred. The method also includes, determining if a delta time value, which provides an accumulated wait time for a frame, is present in frame data; subtracting the delta time stamp value from a global time stamp value and using the resulting time stamp value to determine frame timeout status in the fiber channel switch element. A timeout checker circuit declares a timeout after comparing a time stamp value that is inserted in a fiber channel frame with a programmed time out value and global counter value.

Abstract: The present invention relates to communicating between a network and a mobile terminal in a wireless communication system. The invention includes receiving a channel during a transmission time interval, and determining not to receive a transmission from the network for a predetermined amount of transmission time intervals related to the channel after receiving the channel.

Abstract: A method for calculating a timeout parameter in a communication session, comprises the steps of initiating a session; calculating a throughput of the connection during initialisation of the session by measuring a time span between sending and receiving a data packet on a target communication device 101 including a fixed computational time delay of the initiator communication device 102, wherein the packets are smaller than a maximum packet size; calculating a maximum round trip time for the maximum data packet that is possible to be sent and received based on the calculated throughput; and setting a session timeout parameter equal to the calculated maximum round trip time.

Abstract: A clocking circuit of a receiving unit performs a clocking operation synchronously with a network clock. A packet output circuit of the receiving unit outputs a second packet included in a first packet and outputs a control signal indicating normality/abnormality of output timing of the second packet based on a result of comparing a time of the clocking circuit and a time of first time information included in the first packet. A clock adjusting circuit of a processing unit synchronizes, when the second packet includes second time information indicating a time based on a transmitting side reference clock and when the control signal indicates normality, a receiving side reference clock with the transmitting side reference clock based on a result of comparing a time based on the receiving side reference clock and a time of the second time information.

Abstract: A method for transmitting signals along an interconnect in a VLSI system comprising receivers is disclosed. The VLSI based systems operate in the high Giga hertz range. The signals are transmitted along the interconnect as a localized wave packet i.e. as a pulse. The interconnect may be either electrically linear or nonlinear in nature.

Abstract: Disclosed are a user equipment and a communications node for communicating data in a communications system including a plurality of user equipments, as well as a method for communicating the data by a user equipment and a method for communicating data by a communications node, wherein data are transmitted from the communications node via a downlink shared channel and received by the user equipment. The user equipment comprises an acknowledger which provides uplink acknowledgements with respect to downlink shared channel transmission for user equipments without a dedicated connection which acknowledgements are received by an acknowledgement receiver included in the communications node. The uplink acknowledgements are transferred through a common uplink feedback channel.

Abstract: A transmission method of multiple services combination is as follow. During service initialization of both communication sides, an identical TFCS (Transport Format Combination Set), containing all TFC (Transport Format Combination), is created in both sides. When a data is transmitted according to specific TFC at the transmitting end, a corresponding TFCI (Transport Format Combination Indicator) of the TFC is transmitted simultaneously. At the receiving end, the TFCI is used to look for the TFC in the TFCS. The TFCS is divided into no less than one sub-sets according to the specific channel characteristics of the service. TFCI is only used for looking for TFC in a sub-set, but not used to indicate the sub-set where the TFC is located. When data of services are transmitted with TFC at the transmitting end, the service specific channel characteristics are used to define a sub-set where the TFC is located at the receiving end, and the TFCI is used to look for the TFC in the sub-set.

Abstract: A storage network system includes computers, storage systems, connection devices that control connection relations between the computers and the storage system, and a managing device that manages the computers, the storage system and the connection devices. The managing device includes a control section that specifies connection ports of the computers, the storage system and the connection devices that compose the storage network system. Further, the control device of the managing device displays on a display section a data traffic amount at each of the connection ports for each connection path from the computer to the storage system.

Abstract: The disclosure herein provides a method of acquiring seismic data that includes receiving seismic signals at one or more sensors; sampling the received seismic signals into a plurality of samples, each sample having a same bit length; arranging the samples into a plurality of packets; compressing the plurality of packets by varying a time interval between transmissions of at least some of the packets; and transmitting the compressed packets.

Abstract: An improved modulation circuit and method for TDMA are provided, wherein the transmission data (TD) in odd-numbered time-slots are processed based on a transmission-window signal (Twe) with a differential encoder (10o), a timing generator (20o), a filter (30o), an amplitude data generator (40o), a multiplier (50o), and an I/Q-discriminator (60o), which are configured as odd-dedicated units, and is output from an adder (71) as transmission signal data (IT) and (QT). The transmission data (TD) in even-numbered time-slots is processed with a differential encoder (10e) and other components, which are configured as even-dedicated units, and is output from the adder (71) in common. Thereby, the appropriate data transmission can be achieved in spite of a decrease of guard bits between a couple of time-slots.

Abstract: A system for providing bidirectional communication for a data bus includes a datalink interface component configured to interface into a datalink. The datalink interface component is configured to operate in at least one of a first data communication state, a second data communication state, and a wholly inactive state. The first data communication state causes a first data communication component to communicate via the datalink interface and a second data communication component to be in an inactive state. The second data communication state causes the first data communication component to exist in an inactive state and the second communication component to communicate via the datalink interface. The wholly inactive state causes the first and second data communication components to exist in the inactive state.

Abstract: A telecommunication system uses at least one dual mode channel capable of supporting variable-rate real-time data (e.g. speech) and non-real-time packet data. The packet data is queued in a buffer and transmitted when the data rate of the real-time data stream is less than the full data capacity of the channel.

Abstract: An effective data multiplexing method wherein an error correction ability is exerted at the maximum so that data transmission quality is improved and a data transmitting method in which an interleaving process applicable to data transmission using interpolation pilot signal is performed are provided. The data multiplexing method includes the steps of: coding input data for each input channel; multiplexing said data which is coded; performing an interleaving process on said data which is multiplexed; and outputting said data. In the data transmitting method, when an interleaving process is performed, an interleaver is used in which the number of columns of the interleaver is twice as many as the number of slots of a frame.

Abstract: The invention provides a system and method for compensating for timing violations of a multiplex of at least two streams of media packets. The method includes the steps of: receiving the multiplex; associating a transmitter timing information to media packets; whereas the multiple media packet streams are associated to different time bases; transmitting the media packets and the associated transmitter timing information over a timing violation inducing communication channel to a receiver; receiving, by the receiver, the transmitter timing information and the media packets; providing at least one timing violation compensated stream of media packets in response to the transmitter timing information.

Abstract: A data transmission method and system by which an arrival delay can be controlled are provided. A node (i) calculates a cumulative delay CUM_DLY(i) of a received packet cumulated up to the current hop, by using an arrival delay of the packet and a cumulative delay CUM_DLY(i?1) cumulated up to the previous hop, and compares the cumulative delay CUM_DLY(i) with a target cumulative delay TAR_CUM_DLY(i), thereby controlling a transmission profile for the packet so that an expected cumulative delay at the next node becomes closer to a target value. The node (i) writes the cumulative delay CUM_DLY(i) in a header of the packet and transmits the packet to the next node using the set transmission profile. Similar transmission profile control is carried out at each transit node in a multi-hop system, whereby the cumulative delay in the entire system can be controlled within a desired range.

Abstract: Techniques are disclosed involving the transfer of signals across interconnection media. For instance, an apparatus may include a configuration module and a driver module. The configuration module may select one or more of multiple phase intervals within a time duration. This time duration may correspond to the time period length employed in a sequence of time periods. The driver module provides an interconnection medium with an output signal during one of the time periods. The output signal has an input signal level during the selected phase interval(s) of the period. During any remaining phase intervals of the time period, the driver module provides an alternate signal level.

Abstract: A bus system for the real-time communication of a superordinate unit with one or more subordinate units is used for exchanging address and data information via a bus. For the rapid exchange of messages, further fields are provided between the fields for the address and data information.

Abstract: During the transmission of subscriber-specific data, particularly via a transfer medium and according to a transmission principle based on time slot transmission with time slot separation, the transfer medium used by several subscribers can also be efficiently used when the data rates of the data transmitted in the transmission direction and the reception direction for at least one subscriber using the transmission medium are differently, i.e. asymmetrically distributed. To this end, the data to be transmitted for each subscriber are transmitted, as in the case of a symmetric data distribution, in at least two time slots per a periodically returning time frame and corresponding to the asymmetrical distribution of the ratio of a number of transmission data packets to reception data packets in a plurality n half time frame of the time frame with n being greater or equal to 2 and N.

Abstract: A method, computer program/product, system, transmitter and receiver suited for the transfer of at least one data object (50) to the receiver (101) are shown, wherein the at least one data object is associated with a respective data envelope (51) that serves for at least one of identifying, versioning and time bounding the at least one data object, the method embedding (110) the at least one data envelope and a representation of the at least one data object into a compound container object (52), and transferring (112) the compound container object to the receiver. The at least one data object may be a metadata object that represents a description of services and/or content that can be used by the receiver, and the compound container object is furnished with a compound container envelope (53) that serves for at least one of identifying, versioning and time bounding of the compound container object.

Abstract: An information communication method, which is executed on a transmitting side, is provided. The method comprises a first step of transmitting communication data to a receiving side; and a second step of retransmitting the communication data to the receiving side without waiting for an arrival of a negative acknowledgement signal of the communication data, which arrives from the receiving side, or an elapse of a predetermined acknowledgement wait time.

Abstract: Systems and methods for point-to-multipoint communications with CAS are provided. In one embodiment, a method for providing CAS for a point-to-multipoint communication network comprises: providing a network having a first network interface adapted to communicate with a first fractional network interface and a second fractional network interface; mapping a first set of user-data timeslots of the first network interface to timeslots of the first fractional network interface and mapping a second set of user-data timeslots of the first network interface to timeslots of the second fractional network interface, the first set including a first N user-data timeslots and the second set including a next M user-data timeslots; mapping a first set of signaling bits associated with the first set of user-data timeslots with the first fractional network interface; and mapping a second set of signaling bits associated with the second set of user-data timeslots with the second fractional network interface.

Abstract: The present invention discloses a data transmission and receiving method at a data link layer for use in a home network system based on a living network control protocol. The data receiving method at the data link layer of a protocol that consists of a physical layer, a data link layer, and an upper layer, includes the steps of: receiving data from the physical layer, storing the received data in a packet buffer, deciding whether new data has been received within a predetermined data allowable interval time since last data is received; and based on a result of the first decision, completing receiving the data.

Abstract: To more fully utilize the available bandwidth of a network link, network nodes in accordance with the present invention allow TDM data to be combined with packet data. A Packet/TDM cross connect switch, having both a TDM switch and a packet switch, is used in these embodiments. Data packets are transformed into TDM packet columns. The TDM packet columns are combined with standard TDM data columns in the payload of a TDM data frame. Data packets may be sorted based on a priority scheme, in which high priority data packets are given precedence over lower priority data.

Abstract: There is provided a method and apparatus for stamping any Ethernet frames. Any Ethernet frame is provided with a time stamp, it being possible to use standard Ethernet controllers defined according to IEEE 802.X. This is achieved by the method in such a way that the stamp is applied between an Ethernet controller operated in RAW mode and a “Physical Layer” to an area of the Media Access Control (MAC) destination address, while the original MAC destination address is advantageously encoded in the remaining area.

Abstract: The present invention reduces the delay time to extremely short by monitoring the output/distribution unit of the exchange node to specify the unused time slot as write destination of the data and performing priority control by the priority control signal contained in the data. The traffic congestion is resolved by performing write output to the specified time slot regardless of the communication speed of the transmission path of the data. Furthermore, the present invention aims to provide the exchange node and the exchange node control method that ensures communication quality by using the connection type as the communication method since the delay time in communication can be reduced. The exchange node 100 according to the present invention includes an input buffer unit 2, an identification unit 7, a distribution unit 5, a multiplexing circuit 9, a time slot allocation circuit 12, and an output/distribution unit 10.