Abstract: A method for operating an end-user of an isochronous cyclical communication system, including the following steps: receipt of a synchronisation data telegramme from a connecting user in the communication system by the end-user, whereby the synchronisation data telegramme is affected by the run time of a transmission run between the connecting user and the end-user, synchronisation of a time base of the end-user via the synchronisation data telegramme, resulting in a synchronisation of the time base with a tolerance corresponding to the run time, cyclical processing of a transmission list by the end user within a communication cycle corresponding to the time base of the end user, whereby the transmission of a data telegramme occurs according to the transmission list from the end user to the connecting user at the earliest at the beginning of the communication cycle and at the latest at a point equivalent to the tolerance before the projected transfer time point of the relevant data telegramme by the communicat

Abstract: A packet processor for a switch/router alters headers of packets and includes a plurality of ports Memory buffers a first portion of a first packet that is received by an incoming port. A control data processor receives a first control portion of the first packet from the incoming port and transmits the first control portion to one or more outgoing ports. A header altering device strips, modifies and encapsulates the first portion on egress from the packet processor based upon one or more protocol layering requirements of the one or more outgoing ports. The protocol layering requirements include bridged or tunneled Ethernet, unicast or multicast multi-protocol label switching (MPLS), and IPv4 and IPv6 routed.

Abstract: A system of switch modules contains input demultiplexers connected to ports on each of the modules and output multiplexers connected to each of the modules. Each module has output and input interfaces for mesh links and at least one output interface is looped back to an input interface on the same module. The arrangement reduces module-to-module traffic and corresponding increases the transmit bandwidth of a module.

Abstract: Lockup conditions are solved while trunking in Fibre Channel switched arbitrated loop systems. Within a particular switch, a particular combination of pending OPN conditions is detected, indicating a lockup condition. At least one of the detected pending OPN conditions is closed, which alleviates the lockup condition.

Abstract: Methods, systems, and devices are provided for redundant router set up. One embodiment of a network device having router functionality includes a processor, memory in communication with the processor, and program instructions. The program instructions can be stored in memory and executable on the processor to designate a fail-over virtual router interface for a first physical router on a second physical router based on addressing information obtained via communication between the first physical router and the second physical router.

Abstract: A method of generating protocol data units in a radio link control layer, which is set to an unacknowledged mode or an acknowledged mode, is disclosed. After producing a payload unit by segmenting and/or concatenating one or more service data units received from a higher layer, a protocol data unit including a sequence number corresponding to the payload unit and a protocol data unit including the payload unit itself are generated and transmitted separately to a media access control layer through a pair of different channels. Therefore, the PDUs having the sequence number can be transmitted in a low rate in order to reduce the its error rate, and the other PDUs having data can be transmitted in a higher rate to increase the data processing rate.

Abstract: A playback system in a digital cinema network synchronizes the presentation of visual and aural content by deriving timing information for packets of information that are conveyed in video and audio data streams, examining the timing information to determine if any misalignment between the two data streams is likely to be perceptible and, if the misalignment is deemed to be perceptible, introducing delays into one or both data streams to correct the misalignment. If the audio data stream precedes the video data stream, the audio data stream is delayed by an integer number of audio sample periods. If the video data stream precedes the audio data stream, the video data stream is delayed by an integer number of video frames and the audio data stream is delayed by an integer number of audio sample periods.

Abstract: A transmission apparatus including: a plurality of asynchronous network interface units each having an asynchronous network termination unit for inputting/outputting a packet from/to an asynchronous networks and a mapping unit for converting the packet into a first synchronous frame and vice versa, a plurality of synchronous network interface units each used for inputting/outputting a second synchronous frame from/to a synchronous networks, a buffer provided on at least a first of the asynchronous network interface units, and a control unit for storing a packet output by the asynchronous network termination unit for accommodating a specific asynchronous networks and a packet output by the asynchronous network termination unit of the first asynchronous network interface unit into the buffer by adding identifiers for identifying the asynchronous network termination units in the event of a line failure occurring in a synchronous networks on a route related to the specific asynchronous network.

Abstract: A transport channel selecting apparatus is provided, in which the transport channel selecting apparatus includes: a storage for storing information on combinations of transport blocks of transport channels to be transmitted to a radio base station; a transmission buffer for storing transport blocks of the transport channels; an address generation part for generating an address by using numbers of the transport blocks stored in the transmission buffer for each transport channel; an extraction part for extracting, from the storage, information on a combination of transport blocks of transport channels corresponding to the address; and a selection part for selecting transport blocks from the transmission buffer according to the combination indicated by the extracted information.

Abstract: A integrated phone-based home gateway system is disclosed. The integrated phone-based home gateway system includes a broadband communication device, such as digital subscriber line (“DSL”) device, an analog modem, a wireless interface, integrated into a screen-phone for providing broadband communication service to home users. Multiple home users are able to access the Internet and the content services for conducting e-commerce, receiving content news, entertaining on-demand, making audio or video communications, and telecommuting or working at home. This screen-phone based, modular, plug-n-play home gateway interface allows in-home as well as to-home networking, provides automatic data and broadband initialization, configuration and service provisioning, routing and bridging functionality and allows resource sharing among home devices via the existing phone wire, wireless, coaxial or optical cable connections.

Abstract: In a portable radio device having a speaker, key buttons, and microphone arranged on the front surface of the case, an antenna support mechanism supports an extended rod-shaped antenna on the top surface of the case. The antenna support mechanism allows rotation of the antenna, which is extended parallel to the front surface of the case, away from the front surface, and holds the antenna in a locked state with respect to the case when the angle of rotation reaches a prescribed angle with respect to the front surface of the case. Accordingly, the antenna can be distanced from the user's face during use and degradation of antenna performance can be prevented.

Abstract: A system and method for implementing a cellular radio transmitter device comprises a first oscillator device for generating a first oscillator output signal, a second oscillator device for generating a second oscillator output signal, a power amplifier for amplifying the second oscillator output signal to obtain a transmit signal, a mixer device for combining the first oscillator output signal and the transmit signal to produce a mixer output signal, a phase comparator for comparing the mixer output signal and a transmitter input signal and responsively generating a control signal to control the transmit oscillator, and a feedback path for adding the mixer output signal to the transmitter input signal to compensate for distortion present in the transmit signal.

Abstract: A method and means by which a called telecommunications device (14), connected on an established PSTN telecommunications link (18) with a wireless caller telecommunications device (12), can initiate a conference call to be set up from the wireless caller device (12) by sending a command signal to a data processing means (24) interfaced (22) with the wireless caller device (12). In response to the command signal, the data processing means (24) sends a signal set to the wireless caller device (12) via their mutual interface (22), causing the wireless caller device (12) to cause the PSTN (18) to set up the desired conference link (20) at the caller end of the established link (18). The method can be applied by a called alarm monitoring facility (14) to obtain emergency assistance for a distressed wireless caller (12) by causing a conference link (20) with a caller local PSAP (16) to be set up automatically from the wireless caller device (12).

Abstract: A micro-wave mixing circuit produces producing a stable frequency conversion characteristic against a dispersion of output voltage of a local oscillation signal tapped off from a local oscillator. A micro-wave signal fed into a micro-wave signal input can be converted into an intermediate frequency signal of 1 GHz bandwidth where a stable frequency conversion characteristic is maintained against a dispersion of an output voltage of a local oscillation signal, by supplying bias current from a bias supply circuit to an anode of a Schotkky barrier diode responsive to a local oscillation output which is supplied from a local oscillator.

Abstract: Disclosed is a method for operating a communications signal transmitter and apparatus for carrying out the method. The method includes the steps of receiving a communications signal; sensing an amount of user demand; adjusting an output of a power supply that supplies operating power to a communications signal transmitter amplifier in accordance with the sensed demand so as to increase the output of the power supply when the sensed demand increases and to decrease the output of the power supply when the sensed demand decreases; and amplifying the received communications signal with the communications signal transmitter amplifier.

Abstract: The process of the present invention enables a mobile radiotelephone to operate at a 100% duty cycle while providing closed loop power control. The base station measures the signal to noise ratio of the signal from the mobile and compares that SNR with the SNR threshold values the base station has for each data rate the mobile is capable of transmitting. The base station then generates power control commands to instruct the mobile to change its power depending on the outcome of the comparisons.

Abstract: Disclosed are methods and apparatus for use in a satellite communications system (10) that enable a user to gain knowledge of a direction to one or more "best" satellites available to the user. This information enables the user to alter his or her position to take advantage of the one or more "best" satellites at any particular time in order to facilitate the ability to log-on, initiate and receive calls, and complete calls. The information can be supplied by the user terminal (13) itself, or by a gateway (14). The information can be employed by the user to select for a period of time, by example, a position on an east side of a building, to move to a south-east facing window, or to take some other action that enhances the user's connectivity to one or more of the satellites.

Abstract: A connection seeking device in a terminal of a mobile radio system seeks connection of the terminal to one network of a system which includes a plurality of networks. The system extends over a plurality of geographical entities each having at least one network. The terminal is affiliated to a home network belonging to a geographical entity of origin. The device seeks the connection to the home network when the terminal is connected to a network which does not belong to the geographical entity of origin.

Abstract: A receiver, an arrangement and a method for comparing two signals, based on testing whether a first signal exhibits at least one property during a first time interval, and consecutively testing if a second signal exhibits at least one similar property during a second time interval, following the first time interval, the second time interval being in the range of 200 us to 5 ms. The assumption is made that if a first signal exhibits a certain property during a first time interval, it is likely to exhibit substantially the same property during a second time interval, following the first interval. Thus, if a second signal exhibits such a property during the second time interval, the second signal is deemed to be the same as the first signal. If both tests are positive, the two signals are determined to be the same. In this way, both signals need not be present simultaneously.

Abstract: A system for reducing power consumption by a portable electronic communication device. Modem circuit for receiving messages and for transmitting messages from a portable electronic communication device are powered via power source control/switch coupled thereto. A logic circuit is coupled to the power source control/switch for control the power source control/switch to selectively deliver power to the modem circuit of the portable electronic communication device during a first time interval and to withhold power from the modem circuit of the portable electronic communication device during a second time interval. A low power control clock/counter is coupled to the logic circuit means for measuring the duration of the first and second time intervals. In one embodiment, the first time interval occurs while the modem circuit of the portable electronic communication device is transmitting or receiving messages.