Circuit for extracting carrier signals
OF THE INVENTION With the receiver comprising a carrier-reproducing circuit 10, shown in FIG. 1, it is possible to extract in a highly reliable way a continuous phase-modulated carrier signal (CPM-si... Read More
Inventors: Muilwijk, Dirk;, Assignee: U.S. Philips Corp. (New York, NY) |
Method and system for fast access to an uplink channel in a mobile communication network
The present invention comprises a method and system for obtaining fast access to a multiplexed uplink channel in a mobile telecommunications network. In accordance with one embodiment of the invention... Read More
Inventors: Vedrine, Arnaud;, Assignee: Telefonaktiebolaget LM Ericsson (publ) (Stockholm, SE) |
System and method for establishing a direct call path for routing a signal to a data network using a digital loop carrier
Communications Systems FIG. 1 is a schematic block diagram of a system 100 for sending telephony signals between local telecommunications networks and communications devices over a data network 102, ... Read More
Inventors: Neel, Thomas H.; Mak, Stephen;, Assignee: Alcatel (Paris, FR) |
Method for adjusting transmission power in a cellular radio system and a subscriber equipment
The object of the present invention is to avoid great differences in the levels of received Channel Requests, and thus to eliminate the interference caused by them in the operation of the base station... Read More
Inventors: Jolma, Petri; Keskitalo, Ilkka; Kiema, Arto; Savusalo, Jari;, Assignee: Nokia Telecommunications Oy (Espoo, FI) |
Methods and apparatus for retransmission based access priority in a communications system
The present invention provides methods and apparatus for providing access priority in a MAC protocol of a communications system such as, for example, with respect to UMTS RACH. Particularly, the inven... Read More
Inventors: Chuah, Mooi Choo; Yue, On-Ching; Zhang, Qinqing;, Assignee: Lucent Technologies Inc. (Murray Hill, NJ) |
Methods and apparatus for determining, verifying, and rediscovering network IP addresses
The present invention is directed to an address discovery and verification apparatus for assigning a network address to a target server/host system in a network system wherein the network system inclu... Read More
Inventors: Scott, John A.;, Assignee: EMC Corporation (Hopkinton, MA) |
Apparatus for, and method of, reducing noise in a communications system
Briefly, and in general terms, the invention relates to systems for, and methods of, reducing the noise present in the signals received and processed by devices within a communications system and to s... Read More
Inventors: Agazzi, Oscar E.;, Assignee: Broadcom Corporation (Irvine, CA) |
Communications availability
The present invention provides for a system and method for a subscriber to dynamically reveal their availability status for communicating with one or more entities or grouped entities. A subscriber cr... Read More
Inventors: Luzzatti, Omer; Shem Tov, Ofer; Shtiegman, Eran; Kimchi, Gur; Tirosh, Dror;, Assignee: VocalTec Communications Limited (Herzliya, IL) |
System for translation and delivery of multimedia streams
According to the present invention, a multicast transmission gating system may be implemented. The multicast transmission gating system comprises a receiver to receive a multicast transmission in a pr... Read More
Inventors: Putzolu, David M.;, Assignee: Intel Corporation (Santa Clara, CA) |
System for providing stream based and packet based services
One aspect of the invention provides a novel common packet data channel (CPDC) system structure and method to efficiently provide variable-rate packet data services in a CDMA system. This system uses ... Read More
Inventors: Guo, Ning; Strawczynski, Leo;, Assignee: Nortel Networks Limited (St. Laurent, CA) |
Method and apparatus for improving efficiency of TCP/IP protocol over high delay-bandwidth network
In accordance with the present invention, a method of communicating over a link which may be a high delay-bandwidth link, such as a satellite link, comprises receiving, at a source gateway, incoming p... Read More
Inventors: Gelman, Jay R.; Stadler, J. Scott;, Assignee: Massachusetts Institute of Technology (Cambridge, MA) |
Method and apparatus for providing real-time packetized voice and data services over a wireless communication network
OF THE PREFERRED EMBODIMENTS As illustrated in FIG. 1, a wireless communication network 10 generally includes a plurality of mobile stations (also called subscriber units or user equipment) 12a-12d, ... Read More
Inventors: Leung, Nikolai K. N.;, Assignee: Qualcomm Incorporated (San Diego, CA) |
Communication system including an interworking mobile switching center for call termination
OF THE INVENTION The present invention can be better understood with reference to FIGS. 1-6. FIG. 1 depicts a communication system 100 in accordance with the present invention. In an exemplary embodi... Read More
Inventors: Ejzak, Richard Paul;, Assignee: Lucent Technologies Inc. (Murray Hill, NJ) |
Apparatus, and associated method, for effectuating power control of a communication device
The present invention, accordingly, advantageously provides power-control apparatus, and an associated method, for effectuating power control in a communication system in which communication signals a... Read More
Inventors: Tran, Jean-Marie; Kansakoski, Antti;, Assignee: Nokia Mobile Phones Limited (Espo, FI) |
Method, apparatus and computer program for IP traffic prioritization in IP networks
The present invention provides an QoS interworking mechanism for mapping IP session management flow information to underlying. IP and link layers of hosts or other such apparatus in an IP network. It ... Read More
Inventors: Immonen, Jukka; Seppala, Jukka; Ala-Laurila, Juha;, Assignee: Nokia IP Inc. (Mountain View, CA) |
Code converting method and system
What we claim is: 1. A code converting system in which a multivalue signal x.sub.1 (x.sub.1 being non-negative integer not greater than m being even number) of a sampling period mT is received and sub... Read More
Inventors: Miyata, Masachika; Amada, Eiichi;, Assignee: Hitachi, Ltd. (JP) |
Direct digital to digital sampling rate conversion, method and apparatus
Therefore, in accordance with the present invention, direct digital to digital sampling rate conversion for converting input digital signals at a first sampling rate to output digital signals at a sec... Read More
Inventors: Busby, Bruce;, Assignee: Sony Corporation (Tokyo, JP) |
Sampling frequency converter for converting a lower sampling frequency to a higher sampling frequency and a method therefor
An object of the present invention is to provide a low-cost sampling frequency converter having a reduced number of parts and a simple circuit configuration. Another object of the present invention is... Read More
Inventors: Ito, Nobuo;, Assignee: Sanyo Electric Co., Ltd. (JP) |
Digital-to-digital conversion using non-uniform sample rates
The present invention overcomes the limitations of the prior art by providing a method and apparatus for digital-to-digital conversion using non-uniform sampling. In one embodiment of the invention, t... Read More
Inventors: Wilson, James; Cellini, Ronald A.; Sobol, James M.;, Assignee: Analog Devices, Inc. (Norwood, MA) |
Arithmetic and logic computation device and control method
OF THE PREFERRED EMBODIMENTS The numerous innovative teachings of the present application will be described with particular reference to the presently preferred embodiment (by way of example, and not... Read More
Inventors: Curtet, Joel;, Assignee: SGS-Thomson Microelectronics, S.A. (Gentilly Cedex, FR) |
Complementary-sequence pulse radar with matched filtering following doppler filtering
What is claimed is: 1. A method for detecting anomalies, comprising the steps of: transmitting toward an anomaly a first pulse set consisting of a predetermined plurality of first pulses, said pulses ... Read More
Inventors: Urkowitz, Harry;, Assignee: General Electric Company (Moorestown, NJ) |
Filtered fast Fourier transmultiplexer and method
OF A PREFERRED EMBODIMENT With reference to FIG. 2 a multi-channel digital transceiver 200 is coupled to a communication network 250. It will be appreciated that transceiver 200 may be advantageously... Read More
Inventors: Harrison, Robert Mark;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Timing recovery system for a digital signal processor
In accordance with principles of the present invention, a timing recovery system for a digital signal receiver, receives a signal, representing successive symbols, from a transmitter. An interpolator,... Read More
Inventors: Knutson, Paul Gothard; Ramaswamy, Kumar; McNeely, David Lowell;, Assignee: Thomson Consumer Electronics, Inc. (Indianapolis, IN) |
Image reject mixer, circuit, and method for image rejection
According to a first aspect of the present invention there is provided an integrated image reject mixer circuit responsive to an information-bearing signal and arranged to be coupled to a local oscill... Read More
Inventors: Mole, Peter John; Van Vliet, Henric; Babla, Chettan;, Assignee: Nortel Networks Limited (Montreal, CA) |
Apparatus and method for a reduced component equalizer circuit
The aforementioned and other features are accomplished, according to the present invention, by providing an equalizer unit or adaptive filter unit in which the unit, having N components, is divided in... Read More
Inventors: Gatherer, Alan; Tran, Hiep Van;, Assignee: Texas Instruments Incorporated (Dallas, TX) |
Multiplexed sigma-delta A/D converter
OF PREFERRED EMBODIMENTS Referring to FIG. 9A, a sigma-delta A/D converter in accordance with the invention has four sigma-delta modulators 101, 102, 103, 104 in parallel which have their outputs Q1,... Read More
Inventors: Yunus, Mohammad;, Assignee: Harris Corp. (Melbourne, FL) |
High order switched-capacitor filter with DAC input
The present invention disclosed and claimed herein comprises a digital-to-analog converter. The digital-to-analog converter includes a digital portion for receiving an n-bit digital word and convertin... Read More
Inventors: Sooch, Navdeep S.;, Assignee: Crystal Semiconductor (Austin, TX) |
Multi-stage digital to analog conversion circuit and method
The present invention is for a digital-to-analog conversion circuit (DAC) which includes an interpolation filter circuit, a noise shaper circuit, and a semi-digital FIR filter circuit. The interpolato... Read More
Inventors: Cabler, Carlin D.; Linz, Alfredo R.;, Assignee: Advanced Micro Devices, Inc. (Austin, TX) |
Diversity receiver
It is an object of the present invention to provide a diversity receiver. The size of the receiver can be miniaturized and the cost of the receiver can be reduced without degradation of the diversity ... Read More
Inventors: Kannari, Hideyuki; Shibata, Manabu; Oikawa, Hiroki;, Assignee: Fujitsu Limited (Kanagawa, JP) |
Radio receiving device for measuring an electric field level of a receiving channel and adjacent channels using common components
The present invention has been made to eliminate the above drawbacks, and has as its object to provide a radio receiving device which can measure the electric field levels of electric wave on a receiv... Read More
Inventors: Muto, Hiroyasu;, Assignee: NEC Corporation (Tokyo, JP) |
Multiplexer-related 
