Demand-assignment communication system
An object of the present invention is to provide a demand-assignment system which reduces restrictions on the assignment of a satellite communication channel to a new call by the above-said separated ... Read More
Inventors: Nohara, Mitsuo; Takahata, Fumio;, Assignee: Kokusai Denshin Denwa Kabushiki Kaisha (Tokyo, JP) |
Transmitter which adjusts peak-to-average power of a multicarrier signal by switching between a group of channels and a phase-adjusted group of channels
In order to address this need, the present invention provides an apparatus for adjusting peak-to-average power of a multicarrier signal, an apparatus for generating a multichannel peak-adjusted signal... Read More
Inventors: Long, James Frank; Luz, Yuda Y.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Orthogonal modulation scheme
The present invention is directed to methods and apparatuses for generating communications signals. According to one embodiment, a first version of a modulation scheme is applied to a first data strea... Read More
Inventors: Ramesh, Nallepilli S.;, Assignee: Lucent Technologies Inc. (Murray Hill, NJ) |
Packet-switched spread-spectrum system
A general object of the invention is a packet-switched system having high processing gain and high capacity. Another object of the invention is a packet-switched system having sufficient processing ga... Read More
Inventors: Schilling, Donald L.;, Assignee: Golden Bridge Technology (West Long Branch, NJ) |
Cellular CDMA data link utilizing multiplexed channels for data rate increase
The present invention provides a method and apparatus for varying the data transmission rate in a code division multiple access(CDMA) telecommunications system. The method and apparatus provides an ad... Read More
Inventors: Honkasalo, Zhi-Chun; Noneman, John; Kahtava, Jussi; Laukkanen, Mika; Vadillo, Rodolfo; Hottinen, Ari T.;, Assignee: Nokia Mobile Phones Limited () |
Method for downloading data to add functions to vocoder
A method is provided for downloading data to add enhanced variable rate code (EVRC) functions to a vocoder in a base station controller (BSC) of a code division multiple access (CDMA) cellular system.... Read More
Inventors: Lee, Ug-gi;, Assignee: Samsung Electronics, Co., Ltd. (KR) |
Method and system for bandwidth allocation for multimedia services under aggregate traffic conditions
It is therefore one object of the present invention to provide an improved network design. It is another object of the present invention to provide improved methods and systems for bandwidth allocatio... Read More
Inventors: Abu-Amara, Hosame Hassan; Kotamarti, Venkat;, Assignee: Northern Telecom Limited (Montreal, CA) |
System for coding and transmitting motion image signals
An object of the present invention is to provide a motion compensation difference coding system providing a more effective coding of a motion compensation difference with a small bit rate and improvin... Read More
Inventors: Kaneko, Masahide; Matsuda, Kiichi; Mukawa, Naoki; Koga, Toshio;, Assignee: Kokusai Denshin Denwa Co., Ltd. (Tokyo, JP); Fujitsu Limited (Kawasaki, JP); Nippon Telegraph and Telephone Corporation (Tokyo, JP); NEC Corporation (Tokyo, JP) |
Image reader for facsimile apparatus or the like
It is therefore an object of the present invention to provide an image reader for a facsimile apparatus or the like which is free from the influence of contamination in a reference or white image. It ... Read More
Inventors: Seto, Toshio;, Assignee: Ricoh Company, Ltd. (Tokyo, JP) |
Method and apparatus for recognizing pattern of gray level image
It is an object of the present invention to provide a pattern recognition method which can avoid erroneous recognition even under a change or fluctuation in brightness of a gray level image, or the li... Read More
Inventors: Mishima, Tadaaki; Kanasaki, Morio; Takatoo, Masao; Ota, Hideo;, Assignee: Hitachi, Ltd. (Tokyo, JP) |
Method of reducing the low-frequency component of jitter in a digital data transmission system
OF THE INVENTION Referring to the figure, a higher order multiplexer 15 constitutes the input of a digital data transmission system. The multiplexer 15 receives on a plurality of inputs 10 digitized ... Read More
Inventors: Weisser, Alain;, Assignee: Telediffusion De France (Paris, FR) |
Method of imaging a layer containing copolymer of glycidyl methacrylate and allyl glycidyl ether
OF THE INVENTION I. Glycidyl methacrylate-allyl glycidyl ether copolymers and preparation thereof. The copolymers of the present invention are characterized by having an inherent viscosity of at leas... Read More
Inventors: Schlesinger, Sheldon I.; Cochran, Veronica;, Assignee: American Can Company (Greenwich, CT) |
Sampled data filter system as for a digital TV
The present invention is a sampled data filter of either the input weighted or the output weighted type and which is subject to producing pre- and post-overshoots in the filtered replicas of input sig... Read More
Inventors: Acampora, Alfonse;, Assignee: RCA Corporation (Princeton, NJ) |
Method and device for precision sync pulses separation
I claim: 1. A method of precision synchronization pulse separation which comprises the steps of: (a) clamping a composite video signal at a sync level to produce a sync level clamped output; (b) simul... Read More
Inventors: Vladkov, Emil P.;, Assignee: Bulgarska Televisia Kam Komitet Sa Televisia I Radio (Sofia, BG) |
Coherent detection for QPSK modulation
The .pi./4-QPSK coherent detector of the present invention has a vector input and an output comprising recovered data in bit pair form. The coherent detector comprises the input vector coupled to an i... Read More
Inventors: Kazecki, Henry L.; Dennis, Donald W.; Goode, Steven H.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Modular radio
A combination NAV/COM aviation radio and VOR indicator according to one embodiment of the present invention comprises a main body receiver portion, a VOR indicator electrically connected within the ma... Read More
Inventors: Henderson, Claude L.; Abner, Edmund L.;, Assignee: General Aviation Electronics, Inc. (Indianapolis, IN) |
Scanning beam receiver
What is claimed is: 1. In an air navigation system in which a ground based equipment scans a colimated beam of radio frequency energy over a predetermined sector of space in at least one angular coord... Read More
Inventors: Barton, Paul;, Assignee: International Telephone and Telegraph Corporation (New York, NY) |
Adaptive antenna array system calibration
OF THE INVENTION FIG. 1 shows an adaptive array antenna station in communication with remote stations and a telephone network. Adaptive antenna array subsystem 100 is in wireless communication with r... Read More
Inventors: Xu, Guanghan; Wee, Daniel; Chen, Ying; Rao, Yong;, Assignee: Cwill Telecommunication, Inc. (Austin, TX) |
Short cell management unit and method
It is therefore an object of the present invention to provide a short cell management unit and method capable of achieving the OAM functions on the short cell connection basis which were impossible in... Read More
Inventors: Saito, Yukichi; Tamura, Motoshi; Nakamura, Hiroshi;, Assignee: NTT Mobile Communications Network, Inc. (JP) |
ATM switching apparatus applicable to short cell
The present invention has been made in view of the above-mentioned problems, and has an object of the present invention to provide an ATM switching apparatus applicable to a short cell, in which switc... Read More
Inventors: Ono, Hideaki; Takechi, Ryuichi; Fujisawa, Toru;, Assignee: Fujitsu Limited (Kawasaki, JP) |
Monitoring of input backoff in time division multiple access communication satellites
Accordingly, it is an object of this invention to provide a method of measuring input back-off power for a TDMA communication system. It is a further object of this invention to provide a method of me... Read More
Inventors: Assal, Francois T.; Berman, Arnold L.; Potukuchi, Janaki R.;, Assignee: Communications Satellite Corporation (Washington, DC) |
Mounting bracket for communication related devices
An object of the present invention is to provide a vehicle mounting bracket that is easily dissociated into one component that remains anchored to the vehicle and a second component that is fastened t... Read More
Inventors: Williams, Andy C.;, Assignee: |
Double mode long term prediction in speech coding
Thus, an object of the present invention is to provide a new method of more optimally coding a sampled speech signal vector also at longer subframes without significantly increasing the complexity. In... Read More
Inventors: Minde, Tor B.;, Assignee: Telefonaktiebolaget LM Ericsson (Stockholm, SE) |
Apparatus and method for diversity combining
An object of the present invention is to provide a diversity combiner and method which can achieve precise diversity combining with simple calculations. Another object of the present invention is to p... Read More
Inventors: Takahashi, Hideaki;, Assignee: NEC Corporation (Tokyo, JP) |
Method and apparatus for reducing signal blocking in a satellite communication system
OF A PREFERRED EMBODIMENT The method and apparatus of the present invention improve the quality of communication services in areas where signal blocking and fading can occur. This is accomplished by ... Read More
Inventors: Krutz, Michael William; Redden, James Powers; Tayloe, Daniel Richard;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Adaptive rate system and method for network communications
OF THE PREFERRED EMBODIMENTS The present invention provides, among other things, a system and method for controlling a communication rate for an adaptive rate communication system. In the preferred e... Read More
Inventors: Kleider, John; Fette, Bruce Alan; Campbell, William Michael; Jaskie, Cynthia Ann;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Connectionless communication method
Accordingly, an object of the present invention is to make possible high-speed connectionless communication utilizing fully the high-speed switching characteristics of an exchange, e.g., an ATM exchan... Read More
Inventors: Nishimura, Takashi; Sekiya, Naohide; Kimura, Takeshi; Inoue, Hideki; Nagano, Hiroshi; Taoka, Ikuo;, Assignee: Fujitsu Limited (Kawasaki, JP) |
Voice over internet protocol telephone system and method
OF A PREFERRED EMBODIMENT The present invention implements a voice over Internet Protocol (IP) telephone system and method, suitable for whole-home and other uses, which enables customers to place an... Read More
Inventors: Jones, Wesley Stuart; Cotton, Timothy; Holland, Robert Victor;, Assignee: Motorola, Inc. (Schaumberg, IL) |
Method for optimizing mobile wireless communications routed across plural interconnected networks
OF THE PREFERRED EMBODIMENT Turning now to the figures, wherein like reference numerals represent like elements in all of the several views, FIG. 1 illustrates an exemplary telecommunication system 2... Read More
Inventors: Liu, Chung-Zin; Strom, Kenneth Wayne;, Assignee: Lucent Technologies Inc. (Murray Hill, NJ) |
Audio codec reselection for increased port density
OF THE PREFERRED EMBODIMENTS The present invention generally applies to data network telephony gateways. However, this description will not detail the well-understood operation of such equipment as i... Read More
Inventors: Fenton, James L.;, Assignee: Cisco Technology, Inc. (San Jose, CA) |
Multiplexer-related 
