Abstract: An apparatus for packet-priority control for controlling a priority for packets input includes packet-priority setting means for setting hierarchically the priority for the packet input based on predetermined elements, and to adjust, taking into account other elements according to which the priority for the packet varies over time, the set priority, and wireless-resource allocating means for determining a packet for which a wireless resource is to be allocated in accordance with the adjusted priority.

Abstract: In a circuit delivering common mode inline power over a pair of conductors imbalance in the current carried by the first and second conductors of the pair of conductors is detected and compensated with a bias current applied to counter the imbalance.

Abstract: A method and apparatus for enabling a local area network wiring structure to simultaneously carry digital data and analog telephone signals on the same transmission medium. It is particularly applicable to a network in star topology, in which remote data units (e.g. personal computers) are each connected to a hub through a cable comprising at least two pairs of conductors, providing a data communication path in each direction. Modules at each end of the cable provide a phantom path for telephony (voice band) signals between a telephone near the data set and a PBX, through both conductor pairs in a phantom circuit arrangement. All such communication paths function simultaneously and without mutual interference. The modules comprise simple and inexpensive passive circuit components.

Abstract: A method and apparatus for enabling a local area network wiring structure to simultaneously carry digital data and analog telephone signals on the same transmission medium. It is particularly applicable to a network in star topology, in which remote data units (e.g. personal computers) are each connected to a hub through a cable comprising at least two pairs of conductors, providing a data communication path in each direction. Modules at each end of the cable provide a phantom path for telephony (voice band) signals between a telephone near the data set and a PBX, through both conductor pairs in a phantom circuit arrangement. All such communication paths function simultaneously and without mutual interference. The modules comprise simple and inexpensive passive circuit components.

Abstract: In a circuit delivering common mode inline power over a pair of conductors imbalance in the current carried by the first and second conductors of the pair of conductors is detected and compensated with a bias current applied to counter the imbalance.

Abstract: A method and apparatus for enabling a local area network wiring structure to simultaneously carry digital data and analog telephone signals on the same transmission medium. It is particularly applicable to a network in star topology, in which remote data units (e.g. personal computers) are each connected to a hub through a cable comprising at least two pairs of conductors, providing a data communication path in each direction. Modules at each end of the cable provide a phantom path for telephony (voice band) signals between a telephone near the data set and a PBX, through both conductor pairs in a phantom circuit arrangement. All such communication paths function simultaneously and without mutual interference. The modules comprise simple and inexpensive passive circuit components.

Abstract: A power supply distributor permits to broadcast data received in phantom mode at one of its port to at least few of the other ports such that the respective apparatus connected to the power supply distributor will receive them. The power supply distributor includes modems for at least few of the communications links, while the modems are connected between each other through a multiplexer. Optionally, the multiplexer is setup with a switching function. This enables advantageously to select the ports to which received data in phantom mode will be forwarded allowing to buildup a communications link between different apparatus, such link being based solely on transmission of data in phantom mode. Such links can be setup in a bi-directional modus between at least two apparatus. A ghost network is designed which is mapped on an existing network and based on transmission of data in a phantom mode.

Abstract: A network system includes a cross-connected cable assembly interconnecting two or more network elements. The cross-connected cable assembly enables reduction in the effects of near-end crosstalk. Network elements may support separate gain adjustments for individual ports to further enhance the effectiveness of cross-connected ports.

Abstract: The present invention relates to a device and method for injecting a noise signal into a wire pair of a communication link. In operation a differential mode noise signal is received at a first and a second input port, which are connected via a first and a second resistor to a first and a second end tap of a primary coil of a transformer, respectively. The transformed differential mode noise signal is then transmitted via a first and a second end tap of a secondary coil of the transformer and a third and a fourth resistor to a first and a second output port for injection at high impedance into a first and a second wire of the communication link. Optionally, the device comprises a third input port connected to a center tap of the secondary coil for receiving a common mode noise signal. The common mode noise signal is then provided at low impedance to the first and the second wire via the first and the second end tap of the secondary coil and via the third and fourth resistor having low impedance, respectively.

Abstract: Input data is separated into a first data row and a second data row by a unit of a predetermined symbol. One of a plurality of orthogonal codes is selected in accordance with the separated second data row. The first data row is diffused using the selected code; and the diffused first data row is modulated and transmitted. When received, the signals are individually inversely diffused using the same plurality of orthogonal codes. An inversely diffused signal using a correct orthogonal code is selected and demodulated to obtain a first receiving data row. A second receiving data row corresponding to the correct orthogonal code is obtained; and the first and second receiving data rows are combined to obtain the received data.

Abstract: In a method for administering radio resources in a mobile radio cell, which includes a plurality of mobile terminals which are distinguishable by their radio signals, and a base station, the administration of radio resources of a mobile radio cell is improved to such an extent that the available radio resources are utilized more economically. A mobile terminal is requested by the base station to send out a signal, currently present at a receiver of the mobile terminal, which is representative of an interference situation at the location of the mobile terminal.

Abstract: A communications system includes tow high speed communication links formed by pairs of transformers at either end thereof. A phantom circuit formed by the pairs of transformers is used to distribute power to devices connected to the high speed links. In transmission part of a communication system, data is transmitted under the control of a continuously variable frequency clock. The transmission is on parallel data-strobe links, and the receive includes circuitry to identify on which parallel the data signal is preset. A method and circuitry is provided for transmitting and receiving dc balanced data strobe signals.

Abstract: A data communication system is provided that comprises a head-end switching system which comprises a plurality of communication ports. A port controller causes the ports to sequentially issue inquiry signals to network termination points. This sequential processing of inquiry signals prevents the formation of phantom links that may occur if physical conductors which are susceptible to crosstalk interference with connected conductors erroneously convey a response signal back to an unattached port within the head-in switching system.

Abstract: A digital group delay compensation system comprising a digital allpass filter that is utilized in an implementation phase; and a system that generates coefficients for the allpass filter used in the implementation phase such that the overall performance of a system is measured and optimized in a calibration phase.

Abstract: A system for providing power to a local area network LAN connected device via spare wire pairs from a phantom feed LAN, the system comprising a first connector for connecting to the LAN connected device; a second connector for connecting to a LAN hub; and means for redirecting current from signaling wires of said second connector to at least one spare wire pair of said first connector.

Abstract: A method and apparatus for enabling a local area network wiring structure to simultaneously carry digital data and analog telephone signals on the same transmission medium. It is particularly applicable to a network in star topology, in which remote data units (e.g. personal computers) are each connected to a hub through a cable comprising at least two pairs of conductors, providing a data communication path in each direction. Modules at each end of the cable provide a phantom path for telephony (voice band) signals between a telephone near the data set and a PBX, through both conductor pairs in a phantom circuit arrangement. All such communication paths function simultaneously and without mutual interference. The modules comprise simple and inexpensive passive circuit components.

Abstract: Method and system for dynamically modifying access right profiles in the operating system of a computer system or a telephone switching system. In the method, access right profiles having individual command rights to the operating system of the computer system are defined in the computer or telephone switching system. According to the method, the need for modification of the access right profiles in the computer system is recognized; the information contained in the access right profiles is read; the access right profiles which have to be modified are determined; and the access right profiles are modified dynamically as necessary in view of the need for modification that has been recognized.

Abstract: An improved bus structure for bus grounding wires is composed of several parallel arrayed bus wires in a bus structure totally enclosed with an insulation layer, and several grounding wires in the bus structure are formed integrally in one piece with the bus structure together with the bus wires by extrusion process so as to skim on a further extra process to follow thereby saving the overall production cost.

Abstract: A management sub-system is associated with a host computer system. The host system includes a network interface controller to facilitate transmissions between the host system and a distributed computer network. In addition, the management sub-system and host computer share an Ethernet network interface controller (NIC), which is assigned at least two different addresses. The management NIC includes decode logic that detects either of the addresses assigned to it, and routes the associated data packet to the management processor, or to the host processor. As a result, all management operations to either the management sub-system or the host system may be routed through the management NIC, while other standard operations may be routed through the host NIC. In addition, the management NIC may be used as a back-up or spare for the host NIC in the event it fails, or becomes overly busy.

Abstract: A method of transmitting digital audio broadcasting signals comprises the steps of generating a plurality of output frames of information to be transmitted, wherein each of the output frames includes a plurality of blocks of data and each of the output frames is synchronized with an absolute time reference, and transmitting the output frames to a plurality of receivers. The information to be transmitted can identify the location of a transmitter. Transmitters that broadcast in accordance with the method and receivers that receive the transmitted signal are also disclosed.

Abstract: The invention provides a system and method of retrieving data associated with a file from a database by a field name into local memory. It comprises calculating an address reference for a storage location in the local memory for the data; fetching the data from the database; and utilizing the address reference to map the data to an address in the local memory. The address reference is an offset value from a base address of the storage location. Several files may be accessed using a cross reference table containing pointers to field tables. Entries in the cross reference table point to a field table. Each field table is a list of fields associated with the file. Each entry in the field table is a calculated offset value providing an address offset of a particular field from the base address of the file.

Abstract: To provide a production system which is constituted by a plurality of production facilities forming a production line, in which a work in process undergoes a plurality of processes to be completed as a product, and in which occurrence of a product defect or malfunction due to a contamination at a manufacturing stage of a composite product is prevented to avoid a risk in development of the composite product. First and second production lines are discriminated physically or geometrically or as body corporate, and installed in places remote from each other. In the first production line, a group of first substrates is processed by a first process to form a first device group in each of a plurality of regions into which each first substrate is divided, thereby producing a half-finished product. In the second production line, each first substrate is divided into second substrates, and a group of second substrates is processed by a second process to form a second element group.

Abstract: A combinational circuit comprises: a plurality of multipliers, independently performing two or more multiplications for coded digital signals in a Galois extension field GF(2m) (m is an integer equal to or greater than 2), wherein the multipliers include an input side XOR calculator, an AND calculator, and an output side XOR calculator, and wherein the multipliers share the input side XOR calculator. Further, according to the present invention, these multipliers each include an adder connected between an AND calculator and an output side XOR calculator, wherein the output side XOR calculator is used in common, and wherein the outputs of the AND calculators in the multipliers are added by the adders, and the addition results are calculated by the output side XOR calculator that is used in common.

Abstract: Transmitting user data in an HSDPA (High Speed Downlink Packet Access) mobile communication system by using an FCS (Fast Cell Selection) technique where an RNC (Radio Network Controller) transmits packet data only to a Node B that is best able to transmit data to a UE (User Equipment) on the downlink.

Abstract: A method of transmitting data from a Virtual Private Network (“VPN”) server to a Mobile Node (“MN”) is provided. Upon sensing generation of data destined for the MN in the VPN server, a Customer Premise Equipment (“CPE”) router requests an Internet Service Provider (“ISP”) router connected to a VPN to search for an address of a Foreign Agent (“FA”) to which the MN belongs. The ISP router searches for the FA address through a Home Agent (“HA”) and routes the data to the FA identified by the searched FA address. The FA then locates the MN and forwards the data to the MN.

Abstract: The present invention provides an noise suppression circuit comprises an internal circuit which has a high and a low level terminals. The low level terminal is connected to a low level power supply (GND) line. The noise suppression circuit further comprises a first transistor in which one main electrode is connected to the high level terminal of the circuit, a bypass capacitor connected between the other main electrode of the first transistor and the low level power supply line, and a second transistor connected between the other main electrode of the first transistor and a high level power supply (VDD) line. The first transistor is conductive when the internal circuit is active, and is not conductive when the internal circuit is inactive. The second transistor is not conductive when the internal circuit is active, and is conductive when the internal circuit is inactive.

Abstract: A system and method are disclosed for transmitting data over multiple twisted pairs and receiving the data at a single receiver. In one embodiment, data is transmitted over an additional channel existing as the difference between the average voltages of two twisted pairs.

Abstract: In a DSM-CC receiver (12), a signal comprising a periodically repeated plurality of data sections is received. Storage means (14) is provided for caching the data sections included in the signal, and said storage means incorporates a file management mechanism based on file names. Each data section is received (100) under a corresponding file name, and the received file names are modified (140) within the receiver to distinguish between previous or subsequent versions of the same data sections of the signal that are stored in said storage means. Files currently in use are not overwritten, but are marked (135) for later deletion (155). Individual files can be extracted from DSM-CC modules and cache. In this case, individual file names are modified by reference to version information received for the module as a whole.

Abstract: A communication. system includes two high speed communication links formed by pairs of transformers at either end thereof. A phantom circuit formed by the pairs of transformers is used to distribute power to devices connected to the high speed links. In transmission part of a communications system, data is transmitted under the control of a continuously variable frequency clock. Transmission is on parallel data-strobe links, and the receive includes circuitry to identify on which parallel the data signal is preset. A method and circuitry is provided for transmitting and receiving dc balanced data strobe signals.

Abstract: A method for subcarrier allocation and loading for a multi-carrier, multi-subscriber system is described. At least one cluster in a first and second set of clusters of subcarriers is associated for use in communication with a first and second subscriber, respectively. Then, for each cluster associated for use in communication with the first subscriber and the second subscriber, usage of that cluster is multiplexed between the first subscriber during a first time division and the second subscriber during a second time division.

Abstract: A system for monitoring WDM channels in an optical system includes a phased array optical wavelength demodulator (phasar). The phasar is controlled to vary the effective optical length of the waveguides in the array such that a particular wavelength signal can be output for monitoring.

Abstract: A priority auto-control method of signal routes in a No. 7 signaling network is disclosed. In a preferred embodiment, it can improve usefulness and efficiency of the No. 7 signaling network by newly defining a MHT message and a MHA message in accordance with a MTP signal message standard form. It then performs a test of the all available signal routes from an originating point to a terminating point by using the MHT and MHA message. It thus automatically optimizes the priority of the signal routes in accordance with a state change of the signaling network, without requiring operator intervention.

Abstract: A call pricing center that assists Internet Protocol (IP)-compatible devices in defining preferences, including prices, for completing an IP routed transaction. A centralized routing engine associated with a clearinghouse uses the preferences to assist IP devices in making routing decisions. The pricing center provides IP network operators and retail IP telephony gateway operators with significant flexibility by allowing them to designate preferences and preference criteria. A source gateway operator may set preferences such as the maximum price that it is willing to paid for a call, the maximum delay that will be tolerated and the maximum autonomous system hop count that will be tolerated. A destination gateway operator may also set preferences relating to the prices it will charge for terminating calls. Using preference criteria, a gateway operator may specify particular times call prices are to be effective and to what called number ranges they are to be applied.

Abstract: The present invention involves an adaptive digital radio communications architecture which can be reconfigured by reprogramming at least one programmable device, and thus more efficiently use the available bandwidth of a time-varying RF channel and/or to provide a flexible and adaptive digital communications system. In certain embodiments, the programmable device uses a Programmable Logic Device (PLD) to perform the digital communications processing functions of the transmitter or the receiver of a radio communications system. In this context, PLD is a general term representing a family of programmable logic devices; examples of this family are a Programmable Array Logic (PAL), a Complex PLD (CPLD), and a Field Programmable Gate Array (FPGA). The architecture is reconfigurable in the sense that any or all of the digital communications processing algorithms can be modified by reprogramming the PLD.

Abstract: A communication system includes two high speed communication links formed by pairs of transformers at either end thereof. A phantom circuit formed by the pairs of transformers is used to distribute power to devices connected to the high speed links. In transmission part of a communications system, data is transmitted under the control of a continuously variable frequency clock. Transmission is on parallel data-strobe links, and the receive includes circuitry to identify on which parallel the data signal is preset. A method and circuitry is provided for transmitting and receiving dc balanced data strobe signals.

Abstract: A method and apparatus for controlling a power level of a transmitted signal sent from a second station to a first station in a communication system maintains a desired power level of a signal received at the first station. The first station sends a power control command to the second station directing the second station to either increase or decrease the power level of the transmitted signal. The first station generates the power control command based on the power level of the received signal, the desired power level, and at least one pending power control command. Pending power control commands include those power control commands that are propagating between the first station and the second station.

Abstract: When text data is transmitted from one computer to a counterpart computer, the counterpart computer displays the text data from the one computer and further displays a plurality of corresponding response buttons. By designating one of the response buttons in the counterpart computer, corresponding response data is transmitted to the one computer. This facilitates a real-time electronic dialog between the computers.

Abstract: A system controls the configuration of a Token Ring network port having a first mode of operation and a second mode of operation. The system includes a mode selector having a first state associated with the first mode of operation and a second state associated with the second mode of operation. A switching device is coupled to the mode selector and the network port. The switching device has a first configuration associated with the first mode of operation and a second configuration associated with the second mode of operation. The network port may include multiple signal wires that are coupled in different configurations by the switching device based on the switching device configuration. Additionally, the switching device may be coupled to receive a phantom current in the first configuration and coupled to transmit a phantom current in the second configuration. A detector can be coupled to the switching device to detect a phantom current in the first mode of operation.

Abstract: A flow control method and apparatus for controlling flow through an output link in a communication network modifies a prior art Phantom flow control method by calculating the maximum allowable cell rate as a function of the number of active flows through the output link. To accomplish this, the method and apparatus calculates alpha smoothing parameters as a function of the number of virtual channels flowing through the output link. The method and apparatus improves the stability of the Phantom flow control method, and also enables it to be used with less costly network switches, such as shared memory switches.

Abstract: A high frequency signal and a low frequency signal are coupled onto a pair of conductors providing a communication link between two computer components. The high frequency signal may be a differentially coupled Fibre Channel 8B/10B encoded signal. A diplexer includes a low pass filter for attenuating the Fibre Channel signal and a high pass filter for separately attenuating the low frequency signal. A two-way communication link may be provided over twinax cable. An environmental monitor may be in connection with the low frequency communication path.

Abstract: A method and apparatus for effecting a digital communications in a tandem cross-connect of an intermediate station in a telephone system communications network to enable synchronization of the digital signals coupled between ports of the cross-connect. The method and apparatus provide center-tapped transformers at each port for coupling into the cross-connect, applying synchronizing signals to the center-tap of the transformer for raising and lowering the DC voltage of the transformer output cross-connect side without adversely affecting the signals being transmitted across the transformer coupled network, and processing received signals to identify and synchronize to repeating protocol patterns. In particular, the invention employs photo-optically coupling to the transformers to maintain electrical isolation of the synchronizing elements of the circuitry and employing the circuitry in particular in connection with synchronizing to the A and B signalling bits of a T1 protocol.

Abstract: A device which attaches multiple workstations, printers, computers or the like to a single lobe of a communications network includes a multistation access unit (MAU) with multiple ports and a voltage generator unit which generates a phantom current to activate a remote switch which allows one or more ports on the MAU to transmit or receive information from the communications network.

Abstract: A method of automatically determining an attached device type for a multi-port LAN switch, and configuring the port based on the attached device type is provided. The method comprises setting a LAN switch port to a port mode, and determining, during a first period of time, whether an attached device is attempting to insert at the LAN switch port. If the attached device is attempting to insert during this first period of time, the method continues by configuring the LAN switch port in the port mode. If the attached device is not attempting to insert during the first period of time, the method continue by setting the LAN switch port in an adapter mode, transmitting a test frame to the attached device, and then determining, during a second period of time, whether a response frame is received from the attached device. If a response frame is received during the second period of time, the method further includes configuring the LAN switch port in the adapter mode.

Abstract: Techniques are disclosed for controlling the communication of multimedia electronic signals representing audio, video, and/or data. These techniques operate in conjunction with a system including a network, a multimedia server (MMS) connected to the network, and a plurality of endpoint devices connected to the network. The network is comprised of communications links and switches adapted for selectively connecting and disconnecting the communications links. The endpoint devices are adapted for converting multimedia electronic signals into audio, video, and/or data. The MMS is equipped to control the network such that multimedia signals may be exchanged among a plurality of endpoint devices, thereby providing a multimedia conference.