Abstract: A computerized model provides a display of a physical environment in which a communications network is or will be installed. The communications network is comprised of several components, each of which are selected by the design engineer and which are represented in the display. Errors in the selection of certain selected components for the communications network are identified by their attributes or frequency characteristics as well as by their interconnection compatibility for a particular design. The effects of changes in frequency on component performance are modeled and the results are displayed to the design engineer. A bill of materials is automatically checked for faults and generated for the design system and provided to the design engineer. For ease of design, the design engineer can cluster several different preferred components into component kits, and then select these component kits for use in the design or deployment process.

Abstract: A computer system. The system includes a plurality of devices. The system includes a printed circuit board having a radial bus topology which connects to each of the plurality of devices and through which each of the plurality of devices communicate with each other. A computer system including N devices, where N is greater than or equal to 11 and is an integer. The system includes a printed circuit board having a radial bus topology which connects to each of the devices and through which each of the devices communicate with each other. The topology is operable at a frequency of at least 75 MHZ. A method for transferring data. A radial bus topology on a printed circuit board in a computer. The radial bus topology includes equidistant line segments wherein the line segments emanate from a central location.

Abstract: A method of making a wavelength converter assembly forms an epitaxial structure on a substrate. Different areas of the epitaxial structure have different optical properties. A laser is formed in the epitaxial structure. A photodetector is formed in the epitaxial structure.

Abstract: The disclosure discloses a method for extending the length of time over which a cordless telephone system can operate without an external source of power. The method involves detecting a power supply outage, determining that a telephone call is not currently being handled, placing the portable unit into a mode of reduced power consumption, and placing the base unit into a mode of reduced power consumption. After a period of time, the base unit resumes functionality, determines whether a call is being initiated, and handles any such calls. If the system is not active, the base unit re-enters its mode of reduced power consumption, and the cycle is repeated.

Abstract: A voicemail system includes a voicemail bookmarking procedure that permits users to bookmark voicemail messages during message playback. Upon receiving a bookmark request from a user, the procedure generates a bookmark pointer defining a starting point for subsequent playback of the message. The bookmark pointer can be based, in part, on a timing offset value entered by the user while making the bookmark request. The timing offset value defines a user-selected playback starting point that occurs before the message time at which the bookmark request was made. The value of the timing offset can be user selected.

Abstract: Parallel demodulators are provided in field units. Forward and reverse channel allocation information may be broadcast to the field units in the same epoch as traffic data but on first and second channels, such as paging and traffic channels. This assures that all field units are able to receive forward and reverse channel allocation information every epoch. By having parallel demodulators in the field unit, switching between the first and second channels is avoided and channel allocation information is not lost.

Abstract: A system for limiting unauthorized access to a network comprises an IP assignment system and an access system. The IP assignment system includes a random number generator capable to generate a random number between a minimum and maximum leasing time; and an IP assignment engine, communicatively coupled to the generator, capable to receive, from a client, a request for an IP address, assign an IP address to the client, randomly determine, using the generator, a leasing time for the IP address, and send, to the client, a packet that includes the IP address and leasing time. The access system includes a packet monitoring engine capable to receive a packet sent to a client, the packet including an IP address, a random leasing time and a renewal window; and an access engine, communicatively coupled to the packet monitoring engine, capable to enable the client to access a network and terminate access to the network if a renewal packet is not received during the renewal window.

Abstract: A power control system and method for a wireless telephone employs an open loop technique for relatively low power levels and a closed loop technique at higher power levels. In the open loop technique, a wireless telephone (104, 106, 108) stores a phasing table of automatic power control (APC) values for the power levels (which are used to control upconverter gain levels measured at different channels. In operation, a power controller (322) reads the power level and reads the APC value in the table. Another table stores the APC value for one power level as the channel and temperature are varied. This value is interpolated, as needed, during operation. The APC value for the open loop approach is determined by reading the input channel; finding the closest higher and closest lower channels in the temperature-channel table; interpolating between APC values for the temperature column of the closest lower temperature, to get the actual value.

Abstract: A multiple phase wavelength locker employs an etalon with multiple steps, the steps providing optical cavities having different optical lengths for use with multiple photodetectors, such that a resonance position of each etalon step is offset by a fraction of a resonance period. The stepped etalon can be employed to track the exact wavelength of a laser in a wavelength division multiplexing (WDM) system.

Abstract: A method is directed to recovering a digital data content in a communication system, wherein the digital data content has been converted into an analog signal based on a primary clock, at a transmitter for transmitting to a receiver. The method comprises receiving the analog signal by the receiver. The analog signal is converted into a digital signal, based on a clock of the receiver. The digital signal is interpolated at the desired interpolation point, if digital signal in time has been shifted by an amount equal to or larger than a predetermined time length. The interpolated digital signal is recovered back to the digital data content, with the assist of an estimated channel impulse response. The channel impulse response is retrained every time when the interpolation point is significantly changed.

Abstract: A dielectric fill disposed in a waveguide is used to form an antenna feed. One attribute of the dielectric fill is to enable a reduction in aperture size that in turn increases the beamwidth. More specifically, an RF signal received or transmitted at the end of the waveguide can have a wider half-power beamwidth angle than otherwise achieved without the dielectric filling the waveguide. A portion of the dielectric fill may protrude beyond the end of the waveguide to match the waveguide to free space. If the waveguide section is cylindrical in cross-section, a transformed section formed of an annular dielectric ring may be used to match the feed to a rectangular waveguide.

Abstract: The present invention relating to a device and method for multiplication of repetition frequency in optical pulse trains. The device and the method multiply repetition frequency of optical pulse train generated with ML-FRL with high stability. The device comprises an optical fibre ring composed of optical fibres, an optical amplifier and a modulator for optically modulating, and an electric signal generator generating high frequency signals. The device generates an optical pulse train of repeating frequency of fm, when applying electric signals of frequency of fm to the modulator. In addition to the construction, the stabilised optical pulse generator comprises a filter passing through frequencies of integer multiple of the applied modulation frequency fm, and a composite cavity composed of a plurality of optical fibres of which lengths are different each other.

Abstract: A system and method for voice transmission over high level network protocols. On the Internet and the World Wide Web, such high level protocols are HTTP/TCP. The restrictions imposed by firewalls and proxy servers are avoided by using HTTP level connections to transmit voice data. In addition, packet delivery guarantees are obtained by using TCP instead of UDP. Variable compression based on silence detection takes advantage of the natural silences and pauses in human speech, thus reducing the delays in transmission caused by using HTTP/TCP. The silence detection includes the ability to bookend the voice data sent with small portions of silence to insure that the voice sounds natural. Finally, the voice data is transmitted to each client computer independently from a common circular list of voice data, thus insuring that all clients will stay current with the most recent voice data. The combination of these features enables simple, seamless, and interactive Internet conferencing.

Abstract: A rate matching method is provided for a mobile communication system that performs an adjustment to a code rate based on an optimal level by puncturing or repetition to respective bit streams of transport channels. The rate matching method is preferably applicable to uplink and downlink rate matching for channel coding including turbo coding, convolutional coding and the like. The rate matching method for uplink can include executing coding for bits of a transport channel, and branching off the bits into a plurality of sequences, constructing a first interleaving pattern for the plurality of sequences, constructing a virtual interleaving pattern for at least one sequence based on a mapping rule with a corresponding first interleaving pattern and calculating different bit shifting values in each column of each virtual interleaving pattern. Then, a bit position to be punctured is determined in each constructed virtual interleaving pattern using the calculated bit shifting values.

Abstract: A communications interface system receives an initial address message for a call into a circuit process and transferring the initial address message to a call process. The call process processes the initial address message to generate and transfer set-up information to a bearer system. The bearer system receives user communications for the call and routes the user communications in response to the set-up information. The circuit process receives a release message for a call and transfers the release message to the call process. The call process processes the release message to generate and transfer tear-down information and a disconnect message. The circuit process generates and transfers a release complete message in response to the disconnect message. The bearer system terminates the routing of the user communications in the in response to the tear-down information.

Abstract: A W quantum well structure for active region of semiconductor lasers for long wavelength emission of photons. The energy band lineups in the disclosed heterostructures achieve emission at wavelengths of 1.3 &mgr;m or greater. The W quantum well structure and exemplary materials can be applied to any semiconductor laser including a vertical cavity surface emitting laser (VCSEL). The active region is comprised of one or more sets of triad layers of GaAs1−xNx/GaAs1−ySby/GaAs1−xNx to provide the W quantum well structure. The energy band of these materials provides a staggered band alignment which causes electrons and holes to be confined in adjacent layers to one another. Because the wavefunctions associated with these materials tunnel into adjacent layers, optical emission at a longer wavelength is achievable than otherwise available from the energy gaps of the constituent materials alone.

Abstract: Systems to provide and methods to design a printed lumped-distributed balun are presented. A lumped-distributed balun includes a single-ended port, a first differential port, a second differential port, a first phase shifter circuit, and a second phase shifter circuit. The first phase shifter circuit includes a first inductor and a first capacitor. The first inductor is coupled to the single-ended port and the first differential port. The first capacitor is coupled to the first differential port and is adapted to be coupled to ground potential. At least one of the first inductor and the first capacitor is implemented as a transmission line structure, such as microstrip. The second phase shifter circuit includes a second inductor and a second capacitor. The second inductor is coupled to the second differential port and is adapted to be coupled to ground potential. The second capacitor is coupled to the single-ended port and the second differential port.

Abstract: A casing pipe is inserted into a drilled hole reaching the inside of a confined aquifer in which groundwater is stored and flows or a position near the confined aquifer. A measuring device measures an electromagnetic field at the distal end of the casing pipe. An analyzing device analyzes data concerning the electromagnetic field measured by the measuring device to sense motion of ground pore water, thereby predicting rapid motion in the earth's crust, such as a volcanic eruption, an earthquake, a landslide and ground collapse. The casing pipe is an electrically conductive pipe having a non-magnetic screen portion formed at the distal end thereof so that recycling groundwater passes through the screen portion. The measuring device includes an electromagnetic field sensor placed in the screen portion and the conductive casing pipe as an electrode for measuring an electric potential relative to an electric potential at the earth's surface detected with a reference electrode.

Abstract: A method of fabricating multiple superimposed Bragg gratings in the core of a portion of a photosensitive fiber is provided where only one common phase-mask is used. The multiple superimposed Bragg gratings are inscribed in the portion of the photosensitive fiber by applying different predetermined longitudinal stresses to the portion for each corresponding writing. The different predetermined longitudinal stresses are applied to the portion of the photosensitive fiber by stretching the portion along its longitudinal axis bi-directionally and simultaneously such that the centers of all fiber Bragg gratings imprinted in the portion are substantially superimposed at the center of the portion of the photosensitive fiber.

Abstract: Laminated resealable booklets on labels having an unadhered pull tab are made on a label press or the like by separating release material from label material in a web of label stock, neutralizing the adhesive on the label material in predetermined locations, and adhering the active adhesive on the label material to the release material. A succession of initial bases are die cut, and the resulting waste matrix is removed. Booklets are then laminated over a portion of the initial bases, and of course the laminate also covers the spaces between adjacent initial bases. The laminate and initial bases are then die cut to form the label products. Each label product includes a booklet, a base label portion of the initial base which the booklet covers, and a portion of the adjacent initial base which is not adhered to the release liner. The unadhered portion of the adjacent initial base forms the pull tab.