Abstract: A communications transmission system and method modulates a radiation source at higher rates for either fiber optic telecommunication systems or for digital electrical or optical switches associated with computer routers or servers. A first source provides a carrier signal; a modulator receives the carrier signal and an information signal to generate a modulated carrier signal. A second source provides a transmission signal; and a signal mixer receives the modulated carrier signal and the transmission signal to generate a frequency shifted transmission signal. The transmission system increases the amount of analog or digital information that can be transmitted over a communications network. The modulated carrier signal and the frequency shifted transmission signal may be filtered.

Abstract: This invention relates to the methods for transmitting and receiving the broadcast message in a mobile communication system. According to the present invention, the broadcast message is appropriately decomposed into the predetermined number of messages at a base station according to the load of a paging channel and to the size of the broadcast message. The decomposed broadcast messages are successively transmitted to a mobile station through the paging channel. The mobile station receives successively the decomposed broadcast messages in the decomposed order and forms a single broadcast message by arranging the received decomposed broadcast messages. For the decomposing process and the receiving process, two broadcast address parameters are added to the existing parameters.

Abstract: A block sliding window data decoder includes a forward recursion calculator and a plurality of backward recursion calculators including a first backward recursion calculator and a second backward recursion calculator that receives inputs from the first backward recursion calculator. The first backward recursion calculator operates every D cycles to perform a backward recursion over received input signals, while assuming that all future states are equally likely. The decoder further includes a symbol probability calculator that receives inputs from the forward recursion calculator and from the first backward recursion calculator. A memory of the decoder stores the input signals and is organized as N cells, wherein for each cycle one of the N cells is written while N−1 of the cells are read and their contents provided to the forward recursion calculator and to the first and second backward recursion calculators.

Abstract: The invention is a system for providing virtual connections through an ATM interworking multiplexer on a call-by-call basis. A signaling processor receives signaling for a call and selects the virtual connection for the call. The signaling processor generates new signaling that identifies the selection and transfers the new signaling to the ATM interworking multiplexer that accepted the access connection for the call. The multiplexer converts user information from the access connection into ATM cells for transmission over the virtual connection in accord with the new signaling.

Abstract: A method and apparatus for forwarding packets in a network is described. A routing table is constructed using p-structures. An address for a packet is received. The address is matched with a longest prefix stored in the routing table. A decision value associated with the longest prefix is retrieved. The packet is forwarded in accordance with the decision value.

Abstract: A method for converting electromagnetic (EM) energy between guided modes of a photonic crystal waveguide having a waveguide axis, the method including: (i) providing the photonic crystal waveguide with a mode coupling segment comprising at least one bend in the waveguide axis, wherein during operation the mode coupling segment converts EM. energy in a first guided mode to a second guided mode; (ii) providing EM energy in the first guided mode of the photonic crystal waveguide; and (iii) allowing the EM energy in the first guided mode to encounter the mode coupling segment to convert at least some of the EM energy in the first guided mode to EM energy in the second guided mode.

Abstract: A subscriber controlled registration protocol, a subscriber monitors a congestion indicator signal broadcasted by a base station with which it desires to register. If the congestion indicator signal indicates that the base station is operating in a congested state, the mobile station selects another base station in the system. Otherwise, it attempts to register with the first selected base station.

Abstract: An inter-frequency handoff execution method in a mobile communication system according to the present invention includes the steps of: transmitting from a base station a data frame in which a data transmission section and a frequency search section exist to an arbitrary mobile terminal; executing data transmission in the data transmission section; searching a frequency of other base station in the frequency search section; and determining whether or not handoff is executed in accordance with the searched result.

Abstract: An architecture for connecting a call comprises a call processor, a signaling interface, a call process control system (CPCS), and an interworking unit. The signaling interface receives, transmits, and processes call signaling so that call signaling is received into, or transported from, the architecture through the signaling interface. The call processor processes the call signaling to select connections for calls. The CPCS receives data fills from translations, processes the data to be in a format compatible with the call processor, and fills the data into tables in the call processor. The CPCS also interfaces through the signaling processor with other systems, such as accounting systems and operations centers. The interworking unit interworks user communications between time division multiplex and asynchronous transfer mode connections and between time division multiplex connections and other time division multiplex connections.

Abstract: A system and method for interpreting a plurality of sets of program instructions of an avionic flight computer are implemented on a general-purpose commercially available computer having multi-processing capabilities with a greater number of processors than the avionics computer. The system and method include assigning each of the avionic computer processors to a corresponding one of the processors on the commercial computer and loading each set of program instructions into one of a plurality of cache memories each associated with one of the commercial computer processors. The system and method further include executing a shared process including the interpreter instructions on each of the commercial computer processors associated with one of the avionics computer's processors. Each shared process interprets only those program instructions intended for its associated processor.

Abstract: The present invention relates to a method for reducing low-frequency noise in a cooled circuit wherein low-frequency noise in a cryogenic semiconductor device is reduced by carrying out thermal cure. The semiconductor device is turned on at a first temperature, and the temperature of the semiconductor device is temporarily raised, while flowing current in the semiconductor device, to a second temperature that is higher than the first temperature, and then cooling the temperature of the semiconductor device from the second temperature to a cryogenic temperature, at which the semiconductor device can operate.

Abstract: Disclosed herein are apparatuses and methods for generating pseudorandom numbers by making the existing ANSI and FIPS PRNGs forward secure and eliminating the need for re-keying them. A forward secure ANSI PRNG is created which includes an enhanced block cipher that is non-invertible even if the key becomes known and a function of the block cipher used in the existing ANSI PRNG. Additionally, the forward secure ANSI PRNG includes an enhanced next state that allows previous states to remain secret even when the key and the current state become known. A forward secure FIPS PRNG is created which includes a computation of an enhanced next state that is noninvertible.

Abstract: An anamorphic prism wavelength locker for a laser output beam, wherein the anamorphic prisms perform beam splitting for wavelength and power monitoring for the output beam, magnification of the output beam, and circularization of an elliptical output beam.

Abstract: A clock recovery circuit includes a sampler for sampling a data signal. Logic determines whether a data edge lags or precedes a clock edge which drives the sampler, and provides early and late indications. A filter filters the early and late indications, and a phase controller adjusts the phase of the clock based on the filtered indications. Based on the filtered indications, a frequency estimator estimates the frequency difference between the data and clock, providing an input to the phase controller to further adjust the phase so as to continually correct for the frequency difference.

Abstract: A framing method and the synchronous wireless system therewith, wherein the method includes the steps of: partitioning the data stream into frames according to the frame length, in which the number of sub-frame in each frame can be determined by the periodicity of selected LA codes; forming each sub-frame by a plurality of time slots, in which the number of the said time slots can be determined by the number of pulses of the said LA codes, and the said time slot length varies with the variation of the pulse interval of the said LA codes; and filling in each time slot by modulation with the selected orthogonal spread spectrum codes. Different base stations from different, nearby cells shall be assigned different LA-CDMA codes so that adjacent cell interference can be reduced. While in nearby cells, the same spreading code can be assigned, therefore greatly reducing requirement for the number of spreading codes, as well as the requirement for the lengths of the spreading codes.

Abstract: A communication system, such as a wireless CDMA system, detects markers with fewer errors by having field units transmit the markers at different power levels (e.g., 9 dB for one marker and 11 dB for another marker). The difference in power levels of the markers allows the base station to identify the request markers using alternative criteria with a low probability of error, where the alternative criteria may include comparing the markers to respective energy level thresholds, monitoring occupancy of time slots, occupancy of mutually exclusive code channels, or combinations thereof. For example, in one particular embodiment, a request marker, which is generally a high priority marker, is transmitted with higher power, which improves the probability of detection and reduces the probability of false detection of the request marker.

Abstract: The present invention is a “bi-directional” high-density optical switch, which allows for size reduction of the optical switching matrix and the optical switching matrix package. Interlacing input and output channels and plurality of waveguides and 4 types of switching cells enable this high density optical switch to alternate the placement of the fiber guides on either side of the matrix substrate, leading to a significant overall reduction in the dimensions of the optical switching matrix.

Abstract: A voice-enabled application, which may be a voice browser, is configured to provide active help to a user. The application maintains a usage history of each user with respect to dialog states. The usage history includes various user-specific variables, some of which are valid across multiple sessions. The application maintains a number of active help prompts capable of being played to a user as speech, each containing information on a different, specific help topic. The application further maintains a number of sets of conditions, each set corresponding to a different one of the active help prompts. The application monitors dialog states during a session of a user and generates an event based on the dialog states. The application applies certain ones of the conditions to certain ones of the user-specific variables in response to the event. The application then plays a active help prompt containing information on a specific help topic to the user if the applied conditions are satisfied.

Abstract: The present invention provides an intelligent call processor, an intelligent switching node and an intelligent communications network for use in a communications system. The intelligent call processor comprises a logical platform having a plurality of functions wherein at least one of the functions is service processing function, at least one of the functions is call processing, and at least one of the functions is facility processing, and a processor for executing the plurality of functions. The intelligent switching node comprises an intelligent call processor and, a resource complex communicably linked to the intelligent call processor and logically separated from the intelligent call processor.

Abstract: A dual mode light source unit is configured so that it can be secured into a conventional incandescent bulb socket on the aircraft. The light source has a connector portion that fits in the socket and receives the electrical current supplied thereto by the aircraft electrical system. The unit also comprises electric circuitry connected with the connector portion and a visible light source and an IR light source. The electric circuitry processes the input current from the socket and, based thereon, operates in either a civilian, visible mode or a covert IR mode. Where the current is in one electrical state, such as for example a certain voltage, the electric circuit sends power to the visible light source. When the current is in a different electrical state, e.g., a different voltage level, the circuitry sends power only to the IR source, and no visible light is emitted.