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"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 7634284 | Method and apparatus for reducing data rate transmitted in a beam without affecting its power flux density A technique for enhancing the signal-to-noise performance of a digital communication link without affecting its power flux density. An information data stream has its original signaling rate selectively reduced prior to transmission, to enhance signal-to-noise perfo... | 12/15/2009 |
| 7444169 | Wireless base station apparatus and wireless communication control method A wireless base station apparatus (100) used in a wireless communications system includes a statistical processing unit (140) that performs statistical processing on downlink radio quality information reported from a wireless communications terminal de... | 10/28/2008 |
| 7400909 | Mobile communication apparatus used to communicate information between mobile units A mobile communication apparatus is provided, which permits highly efficient communication even between mobile units that cannot communicate directly because of signal-shielding communication obstacles. The mobile communication apparatus 10 includes tr... | 07/15/2008 |
| 7324901 | Water measurement auto-networks Water measurement auto-networks and methods of operation are disclosed herein. An exemplary method may include determining a water level at a first water measurement station in an auto-network. The method may also include reducing power to at least a transmitter at ... | 01/29/2008 |
| 7321572 | Frame relay protocol-based multiplex switching scheme for satellite mesh network A frame relay protocol-based earth station interface architecture provides full mesh connectivity for a relatively small number of network stations. The fundamental component of the architecture is a frame relay protocol-based switch, which employs a network interfa... | 01/22/2008 |
| 7305219 | Portable radio terminal and AFC control method A portable radio terminal for realizing automatic frequency control (AFC) for automatically controlling the oscillation frequency of an oscillator includes a unit for intermittently performing AFC operation, and a unit for shortening an AFC operation stop period whe... | 12/04/2007 |
| 7200220 | Portable telephone maintenance service system and maintenance service method A portable telephone maintenance service system and maintenance service method for backup control of a portable telephone set, to make it possible to prevent misuse by third persons and to perform data restoration service. A maintenance service center is connected t... | 04/03/2007 |
| 7146136 | E-band radio transceiver architecture and chip set A GaAs E-Band transceiver front-end chip set is provided comprising three MMIC devices. The first device includes a circuit for receiving data at baseband, mixing the data with an LO signal having an E-Band frequency, and transmitting a resultant data stream at an u... | 12/05/2006 |
| 7143320 | Increasing data throughput on a wireless local area network in the presence of intermittent interference A method for increasing data throughput on a wireless local area network in the presence of intermittent interference. The method of one embodiment comprises receiving a data packet through a wireless channel. Quality of the wireless channel is evaluated. A packet e... | 11/28/2006 |
| 7119680 | FSOC/radio intrusion detection system Certain exemplary embodiments provide a method comprising sensing an intruder within a predetermined vicinity of a Free Space Optical Communication (FSOC) system; and reducing an emitted power of the FSOC system. Certain exemplary embodiments provide a system compri... | 10/10/2006 |
| 7072679 | Automatic transmit power control disabling A communications system in which a plurality of transmitter and receiver stations, wherein the transmitter stations are co-located in the same geographic area and capable of communication with each other and an improved method of Automatic Transmitter Power Control ... | 07/04/2006 |
| 7065326 | Millimeter wave communications system with a high performance modulator circuit A high data rate communication system operating at frequencies greater than 70 MHz and at data rates of about 1.25 Gbps or greater. Preferred embodiments include modulators with a resonant LC circuit including a diode which is back-biased for “off” (i.e., no tra... | 06/20/2006 |
| 7047029 | Adaptive transmission system A method, apparatus, article of manufacture, and a computer memory structure adaptively controlling a transmission signal from a satellite to at least one terrestrial receiver in a terrestrial region is disclosed. The method comprises the steps of receiving informat... | 05/16/2006 |
| 6985458 | Multiple band load balancing satellite communication The throughput between a satellite and a plurality of users is controlled by adjusting resources among the users depending on the signal degradation (such as rain fade) experienced by the users. A plurality of time division multiplex (TDM) channels (also called band... | 01/10/2006 |
| 6954618 | Method and device for determining the fading coefficients of paths of a multi-path transmission channel linking, in particular, a base station and a cellular mobile telephone First estimations of the fading coefficients of a multi-path transmission channel are carried out in the sense of maximum likelihood. Sets of Wiener filter coefficients are stored according to predetermined speeds of movement of the mobile terminal and predetermined... | 10/11/2005 |
| 6944477 | Method of selecting signals compatible The invention relates to a method of selecting a signal among N signals, according to which method a validation signal associated with a signal to be selected is placed in an active state by means of a selection signal. The method according to the invention includes... | 09/13/2005 |
| 6920333 | Decision feedback equalizer with embedded coherent signal combiner A receiver in a communication system, for combining various significant components of a multipath fading signal and eliminating all other small components, consists of a signal generator, a plurality of delay devices, a plurality of decision feedback equalizers with... | 07/19/2005 |
| 6862451 | Cellular radio signal with additional channel assigned to downlink, corresponding method, system and base station The invention concerns a cellular radio telephone signal comprising a symmetrical two-way main channel, including a main uplink and a main downlink, in particular transmitting low or medium speed data and signaling and control data, and comprising at least one addit... | 03/01/2005 |
| 6714761 | Meteor burst communication system having the capability of simultaneous communication with multiple remote units A meteor burst communication system (10) has the capability of simultaneously communicating with multiple remote units (14). The meteor burst system includes a base station (12) having a processing unit, or main processor (16), that gener... | 03/30/2004 |
| 6665546 | High speed, point-to-point, millimeter wave dated communication system A point-to-point, wireless, millimeter wave trunk line communications link at high data rates in excess of 1 Gbps and at ranges of several miles during normal weather conditions. This link is combined with an Ethernet network to provide high speed digital... | 12/16/2003 |
| 6643519 | Transmitter power control method and apparatus Automatic control of the power of the transmitters (161 and 162) of a near-end-far-end transceiver pair (121 -141) is achieved by first determining whether the strength of the signals received at near-end and fa... | 11/04/2003 |
| 6611696 | Method and apparatus for aligning the antennas of a millimeter wave communication link using a narrow band oscillator and a power detector An apparatus and method for aligning the antennas of two transceivers of a point-to-point wireless millimeter wave communications link. A narrow band oscillator power source is substituted for the signal transmitting electronics associated with a first an... | 08/26/2003 |
| 6587442 | Enhanced power control algorithms for fixed wireless access systems A method for efficient power control in a (CDMA based) fixed wireless system. The method comprises the steps of (1) monitoring a transmission link of the fixed wireless system for an occurrence of a fade, (2) recording a number of power increases to the t... | 07/01/2003 |
| 6556836 | Point-to-point, millimeter wave, dual band free space gigabit per second communication link A point-to-point, wireless, millimeter wave communications link providing data transmission rates of over 1 billion bits per second (more than 1 Gbps) at ranges of several miles during normal weather conditions. In a preferred embodiment a communication l... | 04/29/2003 |
| 6542745 | Method of estimating the speed of relative movement of a transmitter and a receiver, in communication with one another, of a telecommunication system A method and apparatus for estimating the speed of relative movement of a transmitter and a receiver which are in communication with each other in a telecommunications system. The transmitter and receiver are in communication via a channel of the telecomm... | 04/01/2003 |
| 6321065 | Performance enhancement of open-loop power control for satellite communication systems The present invention provides an open-loop method for determining uplink transmission power in a satellite communication system 200 that compensates for antenna pointing error attenuation and for rain attenuation. Satellite downlink signal 208 attenuatio... | 11/20/2001 |
| 6307833 | Rain fade mitigation in a data transmission system Rain fade mitigation methods and data broadcast systems that provide improved performance in a rain fade environment. The systems distribute data derived from a transmitting processor by way of a data distribution system to one or more receivers located a... | 10/23/2001 |
| 6169881 | Method and apparatus for predicting impending service outages for ground-to-satellite terminal in a satellite communication system A method (1300) and apparatus (300) combines a terminal blockage profile for a ground-to-satellite terminal with satellite location and motion data for one or more satellites (12) in a satellite communication system (10) to predict an impending service ou... | 01/02/2001 |
| 6070051 | Method and apparatus for predicting service availability for a ground-to-satellite radio of a communication system A method and apparatus predicts a ground-to-satellite terminal's (16) percentage of successful communication linkage time to at least one satellite of a communication system in response to a terminal blockage profile (410), as created from the location of... | 05/30/2000 |
| 5918174 | Circuitry and method for initiating communication between communication stations of a radio communication system A method and associated circuitry for initiating communication between a network station and a user terminal of a radiotelephonic communication system, such as a satellite-cellular communication system. When communication is to be initiated, a paging sign... | 06/29/1999 |
| 5901156 | Method of processing messages to be transmitted for a data processing arrangement A method is disclosed for the operation of a data processing system for motor vehicles including at least two computers and a line connecting the computers for the transmission of messages. This line permits a fast and reliable data transmission between t... | 05/04/1999 |
| 5867769 | Transmission power control apparatus in earth station for satellite communication A control status monitor/decision unit is added to a transmission power control apparatus which determines a transmission power level of a transmission signal to be output from an antenna via a transmission system and controls the same by referring to a r... | 02/02/1999 |
| 5839053 | System for transmitting radio signals from mobile terminals to provide space diversity for uplink signals via geostationary communication satellites The invention concerns a system for transmission of spatial diversity radio signals via a geostationary main communication satellite and one or more auxiliary satellites "colocated" in the same orbit. The distance between an auxiliary satellite and the ma... | 11/17/1998 |
| 5815796 | Method for determining parameters for the design of ground equipment for a satellite link system and a method of transmitting signals in a satellite link system A method of determining parameters for the design of ground equipment for satellite link systems using duplex links is disclosed. The method has particular application to determining transponder power requirements and antenna size. The method comprises se... | 09/29/1998 |
| 5060292 | Transmitting power control system A transmitting power control system includes a first-mode arithmetic operation unit for arithmetically obtaining an actual up-link rain attentuation amount based on a total rain degradation amount and a down-link rain attenuation amount and arithmetically... | 10/22/1991 |
| 4991164 | Automatic transmit power level control in radio links A system for stabilization of the coupling value between the transmitted radio signals resulting from cross polar discrimination, using the transmit power level control in radio link systems formed of several radio channels using multilevel QAM modulation... | 02/05/1991 |
| 4965851 | Receiving arrangement with a reception carrier frequency alternately changed from one to another In a satellite communication system for carrying out communication between a central station and local stations, each local station includes a receiving apparatus (41) which comprises a converting unit (43) for converting a received radio signal of a rece... | 10/23/1990 |
| 4941199 | Uplink power control mechanism for maintaining constant output power from satellite transponder Compensation for rain fades in a VSAT communications network is obtained by a uplink power control mechanism incorporated in a master station, which maintains the power output level of the satellite transponder constant without incorporating excessive sta... | 07/10/1990 |
| 4910792 | Up-link power control in satellite communications system An up-link power from an earth station in a satellite communication system is controlled to compensate rain attenuation caused in an up-link so that the transmission power of the earth station is adjusted according to the difference between the level of a... | 03/20/1990 |
| 4896369 | Optimal satellite TWT power allocation process for achieving requested availability and maintaining stability in ALPC-type networks The possibility of overload (saturation-lockup) condition of an ALPC satellite communication network is avoided by a scheme that grants network entry (allocates TWT power) to each link one at a time. As each link is granted entry into the network, the cor... | 01/23/1990 |
