An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 5881358 | Composition for extracting transition metal and method for extracting transition metal using the same A composition for extracting a transition metal which comprises as an active ingredient a cyclic phenol sulfide represented by the following formula (1): ##STR1## wherein X represents a hydrogen atom, a hydrocarbon group, an acyl group, a carbox... | 03/09/1999 |
| 5881359 | Metal and fluorine values recovery from fluoride salt matrices The process for converting feed materials of high mineral content containing primary metal values and fluorine values to the primary metal or useful compounds thereof and to fluorine values or useful compounds thereof, wherein the feed materials constitut... | 03/09/1999 |
| 5881360 | Non-video path data collection device A system performs audio matching to determine the channel to which a television set is tuned. In one embodiment, the system feeds two audio signals to primary and secondary windings of an audio transformer, and employs an output signal taken from a center... | 03/09/1999 |
| 5881361 | Communication unit power up sequencing A communications system (100) having a number of communications units (134) connected to the communications system (100) in which the communications units (134) receive power from the communications system (100). In response to a loss of power or some oth... | 03/09/1999 |
| 5881362 | Method of ingress noise reduction in calbe return paths A method of reducing noise and ingress in cable return paths is disclosed in which the return frequency spectrum is divided into two regions; one frequency region being for transmissions from in-home devices such as television settops and personal compute... | 03/09/1999 |
| 5881363 | Method and apparatus for combatting ingress and multipath in a CATV return channel In a CATV return channel between a transmitter and a headend receiver, the transmitter is provided with a precoder having programmable but fixed coefficients. The receiver is provided with an ingress rejection filter (IRF) having programmable but fixed co... | 03/09/1999 |
| 5881364 | Radio pager having correcting circuit responsive to temperature variation In a radio pager capable of receiving a paging signal subjected to multilevel digital frequency modulation, an analog-to-digital converter (ADC) receives a demodulated voltage signal in the form of an analog signal from a demodulator. The ADC functions to... | 03/09/1999 |
| 5881365 | Digital compressed voice paging system which uses R.D.S. format for the ID signals and S.C.A. format for the voice signals both formats being FM subcarriers The present invention is a digital FM voice paging system which uses digital signal processing (including D/A conversion and data compression) to transmit voice pager data over existing FM broadcast subcarrriers.... | 03/09/1999 |
| 5881366 | Wireless peripheral interface A method and apparatus for establishing a standardized communications protocol for wireless communications between a host and one or more peripheral devices such as joysticks, mice, gamepads, remote controllers or other devices including establishing a st... | 03/09/1999 |
| 5881367 | Method of regulating the power of a signal transmitted by a first station to a second station in a satellite telecommunication network In a telecommunication network, the power of a first signal transmitted via a satellite by a first station to be received in the form of a second signal by a second station is regulated. At a given time, a value representative of a signal-to-noise ratio o... | 03/09/1999 |
| 5881368 | Method and apparatus of power control in a CDMA dispatch system In a dispatch system, power of the forward link broadcast channel transmitted from a base station is controlled such that the power level is the minimum necessary and such that transmission of the forward link broadcast channel is terminated if no remote ... | 03/09/1999 |
| 5881369 | Dual mode transceiver A dual mode transceiver architecture suitable for adaptation in either a handset or a base station and capable of operating in both Frequency Division Duplex (FDD) mode or in Time Division Duplexing (TDD) mode is disclosed. Such a transceiver has an up co... | 03/09/1999 |
| 5881370 | Communication apparatus with an automatically configured multimode talk switch and method of operation A communication apparatus (100) includes an automatically configured multimode talk switch (154). The communication apparatus (100) can be operated in a simplex communication mode, for receive or transmit operations, and a duplex communication mode, for s... | 03/09/1999 |
| 5881371 | Antenna switching technique for improved data throughput in communication networks The r.f. power generating apparatus interacting with the communication network is disclosed. The apparatus comprises the dummy load and the computer operated antenna-dummy load switch. The computer operates the antenna-dummy load switch in such a way that... | 03/09/1999 |
| 5881372 | Radio communication device and method A radio communication device, suitable for use in a portable computer, is capable of operating at any one of a set of common frequencies which are legally permissible in all countries (or a set of countries) and at any frequency on which it detects that a... | 03/09/1999 |
| 5881373 | Muting a microphone in radiocommunication systems Comfort noise functions monitor background noise picked up by microphones in radiocommunication systems. These functions provide comfort noise information which is transmitted by remote units during periods of silence, so that the receiving party's equipm... | 03/09/1999 |
| 5881374 | Circuitry and method for detecting frequency deviation caused by aging of an oscillator Apparatus, and associated method, for determining frequency deviation of an oscillator due to aging of the oscillator. Frequency deviation of a clock signal generated by the oscillator relative to a reference clock signal is determined, and the component ... | 03/09/1999 |
| 5881375 | Paging transmitter having broadband exciter using an intermediate frequency above the transmit frequency The present invention teaches a paging transmitter that has an exciter that upconverts a modulated signal to an intermediate frequency (IF) above that of the transmit frequency. By so doing, the paging transmitter can broadcast a large range of transmit f... | 03/09/1999 |
| 5881376 | Digital calibration of a transceiver Methods and systems for calibrating transceivers are described. Analog transceiver components create errors, such as gain and offset errors in a receiver or a transmitter portion, which are compensated by adjusting digital signal processing in the computi... | 03/09/1999 |
| 5881377 | Communication device and display blanking control method therefor A method and apparatus control blanking of a display (106) in a communication device (100) such as a battery powered radiotelephone. The communication device (100) includes a clock operated blanking timer 317. When the blanking timer 317 elapses, the comm... | 03/09/1999 |
| 5881378 | Device accessing a database using one of old definition information and new definition information based on an access request A derived database processing system in a database processing device comprises a plurality of independent databases which can provide a plurality of users with a group of data to be shared for a common purpose. The derived database processing system compr... | 03/09/1999 |
| 5881379 | System, method, and program for using duplicated direct pointer sets in keyed database records to enhance data recoverability without logging The system, method, and program product of this invention allows a database management system to internally use direct and indirect pointing to locate targeted data elements that are logically related to another data element or are a target of a secondary... | 03/09/1999 |
| 5881380 | Device and method for data management based on values A method of data management includes the steps of receiving a plurality of values, obtaining descriptions, each of the descriptions describing a corresponding one of the values, linking each of the values with a corresponding one of the descriptions, gene... | 03/09/1999 |
| 5881381 | Method and system for mapping non-uniform table-structure input data to a uniform cellular data structure A technique to make it possible to paste text display data in a text-editing program, which is arranged in table format and not formed into a geometrical format, onto a table region of a spreadsheet program as normal cell data by providing a table-format ... | 03/09/1999 |