Industrial or domestic local network
I claim: 1. A method for exchanging information frames having a constant length on a network between circuits (M, N) having transmission channels (T) of unified addresses and/or reception channels (R)... Read More
Inventors: Gandar, Marc;, Assignee: |
Spread spection signal detector
In accordance with the present invention a spread spectrum signal detector apparatus and method is provided for detecting information signals such as pseudo-noise (PN) spread spectrum modulated signal... Read More
Inventors: Cantwell, Robert H.;, Assignee: Raytheon Company (Lexington, MA) |
Local communication system with plural data channels
The invention provides a local communication system comprising a plurality of stations interconnected for the communication of messages via a plurality of serial data channels, characterized in that t... Read More
Inventors: Van Steenbrugge, Bernard;, Assignee: D2B Systems Company Limited (Redhill, GB2) |
Power savings in multiple technology physical layer devices supporting autonegotiation
To overcome the limitations in the prior art described above, and to overcome other limitations that will become apparent upon reading and understanding the present specification, the present inventio... Read More
Inventors: Kelly, N. Patrick; Vogel, David W.;, Assignee: Level One Communications, Inc. (Sacramento, CA) |
Full duplex modems and synchronizing methods and apparatus therefor
Full duplex modems and synchronizing methods and apparatus therefor which allow the relatively low cost realization of full duplex modems compatible with prior art data sets such as the Bell System 21... Read More
Inventors: Ragsdale, Robert G.;, Assignee: Novation, Inc. (Chatsworth, CA) |
Regenerator for an intrabundle power-line communication system
A regenerator for use with an intrabundle power-line communication scheme is disclosed. In the intrabundle communication scheme, a data signal is propagated over the power-line conductors in the diffe... Read More
Inventors: Udren, Eric A.;, Assignee: Westinghouse Electric Corp. (Pittsburgh, PA) |
Repeater for digital communication system
It is, therefore, an object of the present invention to eliminate the above conventional drawbacks and provide a repeater which can determine a fault position with high reliability when the fault occu... Read More
Inventors: Naka, Yoshihiro;, Assignee: NEC Corporation (JP) |
Bidirectional repeater for manchester encoded data signals
The present invention provides a bidirectional repeater of Manchester encoded data, MED, signals which are carried, or present, on two different types of communication media of a token passing local a... Read More
Inventors: Spiesman, Robert L.; Kozlik, Tony J.;, Assignee: Honeywell Inc. (Minneapolis, MN) |
Data transmission apparatus with remote repeater
It is therefore an object of the present invention to provide a transmission apparatus which has improved reliability by providing the remote repeater lines for plural channels to link the first and s... Read More
Inventors: Egami, Noritaka;, Assignee: Mitsubishi Denki Kabushiki Kaisha (Tokyo, JP) |
Local access network signal regnerator
One purpose of this invention is to provide a multiple port signal regenerator that allows full interconnectivity on a local access network ("LAN") over unshielded, voice grade wire, such as telephone... Read More
Inventors: Webber, Jr., Harold H.;, Assignee: Farallon Computing Corporation (Emeryville, CA) |
Extended-length parallel cable
The present invention allows reliable data transfer using parallel communication ports at distances of up to 200 feet, while preserving the speed advantage of parallel communication, solving the above... Read More
Inventors: Faunce, Michael J.;, Assignee: |
Signal acquisition detection method
For purposes here, the term "digital signal" includes signal types that are not conventionally thought of as purely binary, such as bipolar signals (discussed below) and binary modulated analog signa... Read More
Inventors: Brauns, Gregory T.; Ramachandran, Ramasubramaniam;, Assignee: AT&T Corp. (Murray Hill, NJ) |
Spread-time code division multiple access technique with arbitrary spectral shaping
Overview of Conventional CDMA Multiplexing in conventional spread-spectrum CDMA (SS-CDMA) is achieved by assigning a different code, or signature sequence, to each transmitter. Each transmitter uses ... Read More
Inventors: Crespo, Pedro M.; Honig, Michael L.; Salehi, Jawad A.;, Assignee: Bell Communications Research, Inc. (Livingston, NJ) |
Receiver apparatus for spread spectrum communication systems
In accordance with the invention, a receiver for frequency hopping and hybrid spread spectrum communication systems is provided which enables demodulation of transmitted signal without knowing or requ... Read More
Inventors: Kisak, David;, Assignee: |
Modem and method using multidimensional coded modulation
A first aspect of the present invention is directed to a method and apparatus having a properly selected convolutional encoder that allows for a branch cost calculator wherein the computational comple... Read More
Inventors: Srinivasagopalan, Rangarajan; Pruett, James D.; Krishnan, Vedavalli G.; Farias, Luis V.;, Assignee: Racal Data Communications Inc. (Sunrise, FL) |
Fast recovery bias circuit
OF THE PREFERRED EMBODIMENT The fast recovery bias circuit 16 is used in a digital data receiver such as the type shown in FIG. 1 The digital data receiver 10 includes a conventional radio receiver 1... Read More
Inventors: Butcher, James S.; Rousch, Charles G.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Signal receiver
I claim: 1. A signal receiver which amplifies a digital input signal having either an OFF level or an ON level and compares it with a threshold value to perform a level decision, comprising: summing a... Read More
Inventors: Aihara, Shuichi;, Assignee: Japan Aviation Electronics Industry Limited (Tokyo, JP) |
Digital demodulator apparatus
We claim: 1. A digital demodulation apparatus comprising: detector means for receiving and demodulating multivalue quadrature amplitude modulated signals, modulated in accordance with a honeycomb stru... Read More
Inventors: Aono, Yoshihito; Iwamatsu, Takanori; Minowa, Morihiko; Takenaka, Sadao; Daidoh, Yoshimasa; Nakamura, Hiroshi; Fujino, Nobutsugu;, Assignee: Fujitsu Limited (Kawasaki, JP) |
Digital demodualtor using signal processor to evaluate period measurements
What is claimed is: 1. A digital demodulator for efficient demodulation of temporally modulated signals, the demodulator comprising: a zero-crossing event detector, responsive to a temporally modulate... Read More
Inventors: Hedstrom, Mark D.; Crego, Charles R.; Porter, Robert B.;, Assignee: Numa Technologies, Inc. (Naples, FL) |
Technique for generating precompensation delay for writing data to disks
It is therefore an object of the present invention to propose a technique for generating precompensation delay which is not subject to the above disadvantages. It is another object of the present inve... Read More
Inventors: Wang, Yun-Che; Scott, Paul H.;, Assignee: Advanced Micro Devices, Inc. (Sunnyvale, CA) |
Arrangement for equalizing and demodulating binary continuous-phase angle-modulated data signals with modulation index 0.5
OF THE PREFERRED EMBODIMENTS The embodiment shown in FIG. 1 illustrates an arrangement for equalizing and demodulating a received signal r(t). This arrangement forms part of a receiver, not shown, of... Read More
Inventors: Baier, Alfred;, Assignee: U.S. Philips Corporation (New York, NY) |
Device for interfacing between communications media in a home systems network
The purpose of the present invention is to propose an interconnection or interfacing method and device of the repeater type. The subject of the invention is a device for interfacing between at least t... Read More
Inventors: Randrianaliminana, Pax; Burklin, Helmut;, Assignee: Thomson multimedia S.A. (Courbevoie, FR) |
Disk recording apparatus for generating search positional information indicative of marked points on a disk
It is therefore an object of the present invention to provide a disc recording apparatus which uses a disc as a recording medium to facilitate a marked point search and generates search positional inf... Read More
Inventors: Yokota, Teppei; Aramaki, Junichi; Kihara, Nobuyuki;, Assignee: Sony Corporation (Tokyo, JP) |
Process for producing polyolefin resin particles
What is claimed is: 1. A process for producing particles having an increased particle diameter from a powder of a polyolefin resin, which comprises heating the polyolefin resin powder at a temperature... Read More
Inventors: Kuwabara, Hideki; Yoshimura, Shohei; Yamaguchi, Toru; Sudo, Yoshimi;, Assignee: Japan Styrene Paper Corporation (Tokyo, JP) |
Coated particle for use in cosmetic preparations and method
OF THE INVENTION The coated particles of this invention, both those with spherical particles and those coated with boron nitride, have a particle size in the range of 5 to 250.mu., preferably 5-150.m... Read More
Inventors: Farer, Alan M.; Burdzy, Elisa L.; Hanna, Fifi; Penicnak, A. John;, Assignee: L'Oreal (Paris, FR) |
Decision feedback equalizer employing fixed ratio postcursor taps for minimizing noise and intersymbol interference in signals conveyed over high speed data service loop
Careful scrutiny of the functionality of the front end filter components of the above-described `brute force` filter approach of FIG. 3 reveals that the cascade of the noise-whitening filter 35, the m... Read More
Inventors: Turner, Michael D.;, Assignee: ADTRAN (Huntsville, AL) |
High speed communications system for analog subscriber connections
OF THE PREFERRED EMBODIMENTS Conventional Modem Data Connection A conventional modem data connection is shown in FIG. 1. Operation of such a system is well known and has been standardized by governme... Read More
Inventors: Townshend, Brent;, Assignee: |
System and method for indicating an accurate committed information rate
OF THE INVENTION With reference to FIG. 1, shown is a data communications system 100. The data communications system 100 includes a frame relay (FR) data communications device 103 that is in electric... Read More
Inventors: Hammers, David P.; Kenworthy, Charles S.;, Assignee: Paradyne Corporation (Largo, FL) |
Multi-speaker conferencing over narrowband channels
OF THE PREFERRED EMBODIMENT The present invention is a terminal for use with digital summation system which facilitates multispeaker conferencing on vocoders which are narrowband channels (such as, b... Read More
Inventors: Champion, Terrence G.;, Assignee: The United States of America as represented by the Secretary of the Air (Washington, DC) |
Transmission power control method and apparatus for mobile communication system
Accordingly, it is an object of the invention to provide a transmission power control method and apparatus for the mobile communication system, by which the transmission power can be prevented from be... Read More
Inventors: Esmailzadeh, Riaz; Yano, Takashi; Doi, Nobukazu;, Assignee: Hitachi, Ltd. (Tokyo, JP) |
Multiplexer-related 
