Abstract: An adaptive noise canceling system for extracting a desired signal, comprising an adaptive noise cancellation filtering circuit for suppressing noise from a first input signal using a second input signal as a reference signal, and generating an output filtered signal representing the desired signal; and an adaptive noise cancellation controller for receiving the first and second input signals and the output filtered signal, and generating an output control signal for controlling coefficients of at least one adaptive filter of the adaptive noise cancellation filtering circuit, comprising a silence detector unit for detecting whether an acoustical signal is present in the input signals and the output filtered signal, and generating a first output signal which indicates whether the acoustical signal is present; a signal detector unit for detecting whether the desired signal is present in the input signals and the output filtered signal, and generating a second output signal which indicates whether the desired si

Abstract: A flashlight formed of a bottom barrel, a top barrel, an inner socket, a driving socket, a lamp circuit assembly and a compression spring is disclosed and driven to switch on/off the LED of the lamp circuit assembly when the user moves the top barrel axially forwards/backwards relative to the bottom barrel.

Abstract: A system with an accompanying method is provided to improve the signal-to-noise ratio (SNR) of noisy speech by suppressing acoustic background noise. The background noise consists of narrow band noise from rotating machine, audio signals from stereo-loudspeakers of audio entertainment device, and other ambient noise. In this system/apparatus, a microphone senses the speech intermingled with the background noise, and another microphone senses the noisy background. In addition, a measurement sensor is used to measure RPM (revolutions-per-minutes) of the rotating machine and two wires are used to acquire audio signals from the stereo-loudspeakers of the audio entertainment device. Furthermore, to provide better suppression performance for the acoustic audio signals, the characteristics of these loudspeakers are used to compensate for the distortion caused by the loudspeakers. Adaptive comb filters and adaptive FIR filters are applied to estimate the ambient noise and suppress the background noise.

Abstract: The proposed invention solves the problem of spoofing the origin to create e-mail spam, virus distribution, and other abuse of the electronic mail. In particular, it solves a notoriously dangerous problem of distributing computer viruses via e-mail allegedly sent from friends, colleagues, and well-respected organizations. The proposed invention defines a comprehensive set of mechanisms and apparatus to reasonably ensure that an e-mail message—when received by an e-mail gateway, e-mail relay server, or the destination e-mail server—has originated at the location and sent by a person (or a program) specified in its “From:” field.

Abstract: An active noise control system is provided to specify an input transducer, an error transducer, an output transducer and an active noise controller for generating an anti-phase canceling acoustic signal to attenuate an input noise and to output a reduced noise. The active noise control system also performs on-line secondary path modeling. For this purpose the active noise control system comprises, in addition to known systems, a secondary path change detection circuitry (6), a signal distinguishing circuitry (7) and an auxiliary noise control circuitry (8), all of them being used to model said secondary path.

Abstract: The present invention provides an adaptive directional microphone system for enhancing an acoustic signal from a second direction and for reducing an acoustic signal from at least a first direction different from the second direction, the system comprising:

Abstract: A method and apparatus for establishing additional channels for a call between multi-task user terminals. A multi-task call (MTC) signaling module is used to receive requests for the addition or release of additional channels for a call. Through a signaling network, the module has access to the switches of a hybrid network for interconnecting edge switches connectable to MTC terminals. The MTC signaling module controls establishment or release of the connections between links of the paths through the hybrid network. Advantageously, an MTC terminal through its MTC signaling module can control the addition or release of channels through the hybrid network.

Abstract: A method and a system for maintenance of engineering change data are provided. A form generation module generates an electronic form for maintenance of engineering change data according to access rights and search conditions input from a user via a terminal device. A verification module compares engineering data before and after being modified by the user to determine if engineering data, unexpected to be changed, are modified by the user; if yes, the verification module generates an alert message to confirm this modification with the user. A transfer module transfers the electronic form with the engineering change data to an associated responsible unit for verification and approval. A maintenance module updates and upgrades version of engineering data in a database and a backend data processing system once the engineering change data are verified and approved. By the above method and system, operational errors and invalid data modification are eliminated.

Abstract: An adaptive noise canceling system for extracting a desired signal, comprising an adaptive noise cancellation filtering circuit for suppressing noise from a first input signal using a second input signal as a reference signal, and generating an output filtered signal representing the desired signal; and an adaptive noise cancellation controller for receiving the first and second input signals and the output filtered signal, and generating an output control signal for controlling coefficients of at least one adaptive filter of the adaptive noise cancellation filtering circuit, comprising a silence detector unit for detecting whether an acoustical signal is present in the input signals and the output filtered signal, and generating a first output signal which indicates whether the acoustical signal is present; a signal detector unit for detecting whether the desired signal is present in the input signals and the output filtered signal, and generating a second output signal which indicates whether the desired si

Abstract: A known cross-talk adaptive noise cancellation apparatus uses two adaptive filters for suppressing the correlated noise in the main signal, which contains wanted voice and unwanted noise, by a reference signal, which contains unwanted noise and wanted voice via cross-talking. A noise canceler is provided in the present invention including some additional parts, such as a voice detection circuitry and a step size decision circuitry. The voice detection circuitry detects whether the wanted voice exists. The step size decision circuitry decides what the step sizes are used for the next update of the two adaptive filters.

Abstract: A method of setting up calls over circuit-switched and packet-switched resources (117 and 121) on a single network comprising the steps of receiving (601) a request from a user for a call comprised of one or more resources and allocating (607 and 619) the one or more resources among packet-switched resources and circuit-switched resources associated with a communication network to set up the call. The call may be a multi-media call. Resources may be allocated based on one or more call characteristics that may be in a request (503) for resources by the user.

Abstract: This invention relates a process for preparing octreotide and derivatives thereof. The starting material, Thr(ol)(tBu)-2-chlorotrityl resin is coupled with the various amino acids. The straight peptide-resin of D-Phe-Cys(Trt)-Phe-D-Trp(Boc)-Lys(Boc)-Thr(tBu)-Cys(Trt)-Thr(ol)(tBu)-2-chlorotrityl resin or D-Phe-Cys(Trt)-Tyr(tBu)-D-Trp(Boc)-Lys(Boc)-Thr(tBu)-Cys(Trt)-Thr(ol)(tBu)-2-chlorotrityl resin was obtained. Cleavage of the peptide from the resin was achieved by strong acid solution.

Abstract: The present invention provides a system and method for remotely accessing a client in a client-server system. From a browser, an end user enters a URL containing a machine name and a port number. A listening program at the client listening on that port number establishes communication with the browser and invokes a client agent. The client agent includes conventional client functions as well as APIs that allow the client to interface with both the server and the browser. The client agent then serves an applet to the browser that makes the browser appear to the end user as the client machine. The user can then execute client functions from the browser. Examples of the client functions include backing up and restoring files from the client to/from the server, migrating or recalling files, archiving or retrieving files.

Abstract: An active noise control system is provided to specify an input transducer, an error transducer, an output transducer and an active noise controller for generating an anti-phase canceling acoustic signal to attenuate an input noise and to output a reduced noise. The active noise control system also performs on-line secondary path modeling. For this purpose the active noise control system comprises, in addition to known systems, a secondary path change detection circuitry (6), a signal distinguishing circuitry (7) and an auxiliary noise control circuitry (8), all of them being used to model said secondary path. FIG.

Abstract: A known cross-talk adaptive noise cancellation apparatus uses two adaptive filters for suppressing the correlated noise in the main signal, which contains wanted voice and unwanted noise, by a reference signal, which contains unwanted noise and wanted voice via cross-talking. A noise canceler is provided in the present invention including some additional parts, such as a voice detection circuitry and a step size decision circuitry. The voice detection circuitry detects whether the wanted voice exists. The step size decision circuitry decides what the step sizes are used for the next update of the two adaptive filters.

Abstract: A method and apparatus for establishing multimedia calls over an intelligent telecommunications network in which the calls are requested through an internetwork of client computers and server computers and the internetwork of client computers and server computers is further connected to the intelligent telecommunications network. The method involves: 1) a caller generating a request for a call utilizing the internetwork to initiate the request; 2) delivering multimedia and/or audiovisual presentations(s) to the caller via the internetwork and/or public switched telephone network (PSTN); and 3) completing a circuit switched telephone call between the caller and a destination user subsequent to the delivery of the presentations(s) wherein the call is placed from within the intelligent network itself. In this manner, one or more multimedia advertisements or other presentations are delivered to the originating caller before completion of the requested call.

Abstract: The present invention provides a method and apparatus for interfacing different service creation environments (SCEs) and execution environments (EEs) in a telecommunication system. A telecommunication system interface in accordance with the present invention includes at least one SCE to be interfaced to a plurality of service EEs; a parser for parsing output code from the SCE to form a parse tree representing a telecommunication service developed in the SCE; an intermediate code generator for generating an intermediate code representing nodes of the parse tree such that the intermediate code preserves substantially all the information contained within the SCE output code; and a target code generator for generating a target code for each of the EEs from the intermediate code, such that the telecommunication service developed in the SCE may be provided in each of the EEs.