Quotables
"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8107899 | Power supply circuit Provided is a power supply circuit capable of operating with low noise and low power consumption. In a power supply circuit, a power level control signal Pa for controlling a power level of a power amplifier, and an internal current control signal Pb which is a resu... | 01/31/2012 |
| 7382257 | Single RF oscillator single-side band modulation for RFID readers with frequency translation and filtering A transmitter shifts a baseband data signal having a bandwidth of 2ωM using a tone signal having a frequency ωM, which centers a sideband of the data signal at zero frequency. The transmitter then filters the shifted signal to filter out the ... | 06/03/2008 |
| 7373131 | Signal processing method and signal processing apparatus A signal input into an input terminal 1 is input into mixers 2, 4, and down-converted with local signals having a phase difference of 90 degrees, respectively, whereby an I-signal and a Q-signal are obtained. An output signal from the mixer 4 is... | 05/13/2008 |
| 7340011 | Method of frequency multiplication in a radiocommunications apparatus Radiofrequency apparatus and method including at least one transmitter and/or receiver of a useful signal S0, at least one device adapted to the application of a coefficient N to the useful signal S0. The method includes modulating the useful s... | 03/04/2008 |
| 7327779 | Method and apparatus for high-speed software reconfigurable code division multiple access communication A communication device for W-CDMA signal transmission and reception includes a W-CDMA transmitter having at least one of a RAM and registers, a W-CDMA receiver having at least one of a RAM and registers, and a signal acquisition circuit. The communication device is ... | 02/05/2008 |
| 7234342 | Fully digital controller for cantilever-based instruments A controller for cantilever-based instruments, including atomic force microscopes, molecular force probe instruments, high-resolution profilometers and chemical or biological sensing probes. The controller samples the output of the photo-detector commonly used to de... | 06/26/2007 |
| 7218898 | Apparatus and method for frequency generation in mobile communication system An apparatus and method for generating an intermediate frequency (IF) to be transferred to a single sideband (SSB) generator which generates carriers using one local oscillator (LO) signal and at least two IF signals that are received. A group signal is generated wh... | 05/15/2007 |
| 7215193 | Method and apparatus for limiting power amplifier voltage excursions A power amplifier circuit includes a circuit topology with first and second switching elements. The first and second switching elements have a closed state and an open state, wherein current flows between the switching elements when they are both in the closed state... | 05/08/2007 |
| 7212791 | Transmission device and delay time adjustment method thereof A transmitter and method to output a stable output signal having low distortion by adjusting a delay time of an amplitude signal path and a phase signal path. In an amplitude phase extracting part, amplitude data and phase data are extracted from a transmit data sig... | 05/01/2007 |
| 7190942 | Efficient polyphase filter having a compact structure Disclosed are systems and methods which provide phase shifting of signals while minimizing signal attenuation associated with providing such phase shifting. Preferred embodiments provide a compact polyphase filter structure in which the geometry of the polyphase fil... | 03/13/2007 |
| 7190735 | Generating two signals having a mutual phase difference of 90° A method and device are described for generating two output signals (I; Q) each substantially identical to a square-wave input signal (A) from a local oscillator (2), wherein the first output signal (I) may have a certain time shift with respect to the input ... | 03/13/2007 |
| 7184716 | Low cost/low power analog transceiver architecture A time division duplex (TDD) single sideband (SSB) transceiver includes a transmitter adapted to input an analog audio signal, sample the analog audio signal, and to output an SSB frequency shift keyed (FSK) signal corresponding to the analog audio signal, the SSB F... | 02/27/2007 |
| 7177609 | Chopper-direct-conversion (CDC) radio architecture A chopper-direct-conversion (CDC) radio receiver includes a phase-alternating mixer receiving an antenna input signal and at least one local oscillator signal and generating a double sideband signal in a single mixing step. The phase-alternating mixer may be impleme... | 02/13/2007 |
| 7164651 | Wireless computer network including a mobile appliance containing a single chip transceiver A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chi... | 01/16/2007 |
| 7130590 | Transceiver assembly A transceiver assembly including an antenna input/output transition, a transmit module, a receive module, and a diplexer. The diplexer has opposing planar surfaces and the transmit module, receive module and antenna input/output transition are placed on the same pla... | 10/31/2006 |
| 7120397 | All-frequency-band SSB radio communication system and radio apparatus An SSB radio communication system and radio apparatus applicable to ultra high frequencies such as a VHF band and UHF band. In the transmitting side, a carrier wave is amplitude modulated by modulation input signals which comprise a constant amplitude, sine wave sha... | 10/10/2006 |
| 7113750 | Apparatus and method for input channel isolation within an electronic test instrument An electrical isolation device wherein a signal to be electrically isolated is mixed with a carrier signal by a multiplier to produce a modulated carrier signal which is passed through an isolation barrier and demodulated and filtered to extract thereby the initial ... | 09/26/2006 |
| 7110731 | Dual-mode transmitter An emergency and non-emergency transmitter receivable by broadcast band receivers in nearby vehicles, comprising a first signal generator for simultaneously providing a plurality of selectively spaced carriers having frequency spacings corresponding to the individua... | 09/19/2006 |
| 7107022 | Single RF oscillator single-side band modulation for RFID readers using tone insertion during reader reception A transmitter upconverts a SSB data signal during a first operational mode using a RF upconverting signal having a frequency that is offset from a center frequency of a channel (ωC) by an amount that depends on the data signal's SSB bandwidth (ωM | 09/12/2006 |
| 7092461 | Polyphase receivers A polyphase receiver comprises an RF front end (10 to 28) for receiving a wanted data signal modulated on a carrier signal and for producing quadrature related low IF signals, an image rejection filter formed by a polyphase filter (30) for filte... | 08/15/2006 |
| 7088968 | Method and polar-loop transmitter with origin offset for zero-crossing signals A transmitter synthesizes a signal having a phase modulated component and an amplitude modulated component. Phase and amplitude reference signals are generated from phase and amplitude information extracted from an offset output and offset input signal. An origin-of... | 08/08/2006 |
| 7075626 | Laser distance measuring device The invention is based on a laser range finder that has a transmitter unit (10) with at least one laser, a receiver unit (12), and a single sideband modulation unit (14) that can use a first single sideband modulation frequency (ZF1) gene... | 07/11/2006 |
| 7076217 | Integrated radio transceiver A radio transceiver comprises a reception path, a transmission path, and a frequency generator with a programmable phase lock loop. The reception path, the transmission path, and the frequency generator share a maximum amount of common circuitry to facilitate implem... | 07/11/2006 |
| 7061855 | Wireless computer network including a mobile appliance containing a single chip transceiver A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chi... | 06/13/2006 |
| 7043222 | FSK modulator using IQ up-mixers and sinewave coded DACs A radio transmitter system designed using an FSK modulator with IQ up-mixers and sinewave coded digital-to-analog converters (DACs). The radio transmitter system may include a frequency shift keying (FSK) coding logic circuit coupled to the inputs of an IQ modulatio... | 05/09/2006 |
| 7027792 | Topology for a single ended input dual balanced mixer The mixer circuit is a singled ended input to a double balanced high dynamic range mixer with only two base-emitter junctions across the supply. It provides for the use of bondwires to off chip ground as DC block and DC feed elements. The single ended input and diff... | 04/11/2006 |
| 6999525 | Receiving device and integrated circuit for reception In order to improve various characteristics of a receiving circuit for digital radio services, circuits are provided for forming two local oscillation signals, whose frequencies are both the center frequency between a first ensemble and a second ensemble, and whose ... | 02/14/2006 |
| 6944121 | Wireless computer network including a mobile appliance containing a single chip transceiver A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chi... | 09/13/2005 |
| 6917791 | Polar loop transmitter A polar loop transmitter circuit arrangement includes a circuit input, a circuit output and a controllable signal source. A modulator is coupled between the signal source and the output, whilst a first logarithmic amplifier is provided having its input coupled to th... | 07/12/2005 |
| 6904103 | Receiving device and integrated circuit for reception In order to improve various characteristics of a receiving circuit for digital radio services, circuits are provided for forming two local oscillation signals, whose frequencies are both the center frequency between a first ensemble and a second ensemble, and whose ... | 06/07/2005 |
| 6901246 | Suppressed cycle based carrier modulation using amplitude modulation A sinusoidal RF carrier is modulated for the transmission of digital binary data streams through the amplitude suppression of carrier wavelets. These wavelets are defined between zero crossover positions representing zero energy locations. This modulation is accompl... | 05/31/2005 |
| 6891898 | System and method for recovering symbol timing offset and carrier frequency error in an OFDM digital audio broadcast system The system for recovering symbol timing offset and carrier frequency error from an orthogonal frequency division multiplexed (OFDM) signal includes a receiver circuit for receiving an OFDM modulated signal representing a series of OFDM symbols, and providing a recei... | 05/10/2005 |
| 6889035 | Cable-less interconnect architecture for effecting blind coupling of diplexer to radio transceiver An RF cable-less interconnect arrangement couples a diplexer to a radio transceiver by providing each of the transceiver and the diplexer by means of respective pairs of RF transmission and receiver channel connectors. The two sets of connectors are supported at a p... | 05/03/2005 |
| 6844788 | Polar loop transmitter A polar loop transmitter circuit arrangement includes a circuit input, a circuit output, a controllable signal source, a modulator connected between the signal source and the output, a first amplifier having its input connected to the circuit input, a second amplifi... | 01/18/2005 |
| 6560293 | Apparatus and method for FM remodulation of envelope modulated data signals An apparatus and method for transmitting envelope modulated data signals on a Radio Frequency (RF) carrier system, which produces high error performance through remodulation of the data signals onto an RF carrier are provided. The apparatus includes a tra... | 05/06/2003 |
| 6539063 | System and method for recovering symbol timing offset and carrier frequency error in an OFDM digital audio broadcast system The system for recovering symbol timing offset and carrier frequency error from an orthogonal frequency division multiplexed (OFDM) signal includes a receiver circuit for receiving an OFDM modulated signal representing a series of OFDM symbols, and provid... | 03/25/2003 |
| 6532270 | Apparatus and method for broadcast band noise reduction in a transmitter with a low IF frequency In the broadcast band having a plurality of channels allocated therein, by using high-side injection and low-side injection as described herein, the noise introduced into the channel by the local oscillator signal can be minimized. The local oscillator si... | 03/11/2003 |
| 6522213 | SSB transmitter In an SSB transmitter, a problem such that the central frequency of a BPF for extracting one of sideband signals from the modulated signals obtained by modulating a carrier frequency signal by an input sound signal is changed by temperatures, causing a dr... | 02/18/2003 |
| 6430401 | Technique for effectively communicating multiple digital representations of a signal In a communications system implementing, e.g., an in-band on channel AM (IBOC-AM) (also known as "hybrid IBOC-AM") scheme, multiple bit streams are used to represent an audio signal to be transmitted over one or more frequency bands including, e.g., parts... | 08/06/2002 |
| 6418300 | Method and device for transmitting mixed analog and digital signals by the same transmitter A process for transmitting mixed analog and digital signals. A composite signal is transmitted whose frequency spectrum is composed of a first analog spectrum representative of the amplitude of single-sideband modulation and of a second spectrum composed ... | 07/09/2002 |
