Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7460612 | Method and apparatus for a fully digital quadrature modulator A novel apparatus and method for a fully digital quadrature architecture for a complex modulator. The complex modulator can substitute for existing prior art analog quadrature modulator structures and those based on a digital polar architecture (r, θ). The modulato... | 12/02/2008 |
| 7457371 | Transmission signal generating circuit and radio base station communication apparatus using the same A transmission signal generating circuit in a radio base station that employs spread processing circuits in order to output spread transmission signals. The signal generating circuit further contains power class selecting circuits, which categorize spread transmissi... | 11/25/2008 |
| 7453951 | System and method for the transmission of an audio or speech signal A system and method for transmitting an analog signal. The analog signal is converted into complex numbers such that two successive audio samples respectively form a real part and an imaginary part of a respective complex number. The complex numbers are then dispers... | 11/18/2008 |
| 7450659 | Digital modulator employing a polyphase up-converter structure An upconverting circuit is disclosed. The upconverting circuit includes a polyphase component generator that provides Np polyphase components at each input polyphase cycle, wherein Np>2 on each input polyphase cycle defined by a clock. A memory... | 11/11/2008 |
| 7447272 | Filter method and apparatus for polar modulation A method includes providing an in-phase signal and a quadrature-phase signal (I/Q signals), processing the in-phase and quadrature phase signals to produce a magnitude signal and a phase signal, conditioning the phase signal to produce a conditioned phase signal, fi... | 11/04/2008 |
| 7447273 | Redundancy structure and method for high-speed serial link An integrated circuit is provided having a plurality of data transmitters, including a plurality of default data transmitters for transmitting data from a plurality of data sources and at least one redundancy data transmitter. A plurality of connection elements are ... | 11/04/2008 |
| 7443922 | Circuitry for padded communication protocols Transmitter and receiver circuitry for 64b/66b encoding or other similar padded data signalling. The required transmitter clock circuitry is simplified by using one clock signal source as a basis for at least partly processing the data both before and after padding.... | 10/28/2008 |
| 7440488 | TDMA, spread spectrum RF agile filtered signal transmission Communication and broadcast system for Time Division Multiple Access (TDMA), spread spectrum, filtered signal and cross-correlated in-phase and quadrature-phase baseband signals for Radio Frequency (RF) tunable or RF agile transmitters. A selector and connection dev... | 10/21/2008 |
| 7440511 | Transmit filter A transmit filter (100) receives a stream of data symbols (DT_TX) at a baseband symbol clock rate. An available clock (FREF) is used to generate sample points for producing a generating an oversampled signal. The available clock is independent from the baseba... | 10/21/2008 |
| 7440512 | Electrical signal regenerator An electrical signal regenerator including an equalizer and a clock data recovery circuit is provided. The clock data recovery circuit is selected when an input signal of a higher bitrate multiplex level is detected, but the clock data recovery circuit is bypassed w... | 10/21/2008 |
| 7436337 | Transmitter digital-to-analog converter with noise shaping A noise shaping module comprises a first addition module that receives a digital input signal and generates an output signal. A truncation module generates a truncated output signal based on an output of said first addition module. A filter module generates a filter... | 10/14/2008 |
| 7436898 | Integrated circuit (IC) card, data transmission apparatus, data transmission method and computer program of data transmission method An integrated circuit (IC) card capable of a high-speed data transmission to/from a data transmission apparatus having low processing capability. A controlling section generates a data packet by adding management information including information regarding a data le... | 10/14/2008 |
| 7436906 | Synchronous detector with high accuracy in detecting synchronization and a method therefor In a symbol timing detector, a correlator calculates a correlation value for a received radio packet signal. A peak detector compares the correlation value with a threshold value to be used, and sends, upon a correlation value detected larger than the threshold valu... | 10/14/2008 |
| 7436899 | Method and apparatus for data transfer using wideband bursts A method of data transmission according to one embodiment of the invention includes transmitting a plurality of bursts to transmit data, each burst occupying at least one of a plurality of frequency bands. Specifically, a bandwidth of at least one of the plurality o... | 10/14/2008 |
| 7433392 | Wireless communications device performing block equalization based upon prior, current and/or future autocorrelation matrix estimates and related methods A wireless communications device may include a wireless receiver for receiving signals comprising alternating known and unknown symbol portions, and a demodulator connected thereto. The demodulator may include a channel estimation module for generating respective ch... | 10/07/2008 |
| 7433430 | Wireless communications device providing enhanced block equalization and related methods A wireless communications device may include a wireless receiver receiving signals having alternating known and unknown symbol portions over a channel, and a demodulator systolic array. The demodulator systolic array may include a channel estimation module generatin... | 10/07/2008 |
| 7433418 | Method and apparatus for efficient storage of training sequences for peak to average power constrained modulation formats Some embodiments store a training sequence in a communications system. The stored training sequence exhibits certain desirable characteristics when used by a peak to average power constrained modulation format. In one embodiment, a set of original ordered sequences ... | 10/07/2008 |
| 7430248 | Predistortion circuit and method for compensating nonlinear distortion in a digital RF communications transmitter A digital communications transmitter (100) includes a digital linear-and-nonlinear predistortion section (200) to compensate for linear and nonlinear distortion introduced by transmitter-analog components (120). A direct-digital-downconversion s... | 09/30/2008 |
| 7428269 | CQI and rank prediction for list sphere decoding and ML MIMO receivers Systems and methodologies are described that facilitate integrating a list-sphere decoding design in a multiple input-multiple output (MIMO) wireless communication environment. According to various aspects, optimal rank selection and CQI computation for an optimal r... | 09/23/2008 |
| 7424064 | Polar transmitter with digital to RF converter A polar transmitter, operable in linear mode or switched mode, uses a conversion module to convert baseband signals into amplitude data and phase data. The phase data is used to phase modulate a carrier frequency in a radio frequency conversion module. The module co... | 09/09/2008 |
| 7424228 | High dynamic range radio frequency to optical link A communication system includes an optical transmitter which is differentially driven and an optical receiver that outputs a differential signal. The optical transmitter creates the differential drive signal from an input signal and delivers the differential drive s... | 09/09/2008 |
| 7423577 | System and method for transmitting high data rate information from a radar system A system and method for transmitting high data rate information from a pulsed radar is disclosed. The method includes collecting information using a mobile radar platform. The information is divided into a plurality of segments. Each segment is configured to fit wit... | 09/09/2008 |
| 7424070 | Method and device for evaluating the noise associated with turbocodes, and systems using them In order to evaluate the noise related to data issuing from a turbo-encoder, estimates of the noise related to its systematic output, to the data issuing from its first elementary encoder, and to the data issuing from its second elementary encoder are determined. At... | 09/09/2008 |
| 7424274 | Digital transmitter and method A transmitter and method is provided for digitally upconverting a baseband digital signal to a modulated intermediate frequency (IF) digital signal and sigma-delta modulating the IF digital signal. The baseband digital signal is split into N phases, as can be accomp... | 09/09/2008 |
| 7421034 | Parallel concatenated code with soft-in soft-out interactive turbo decoder A method for parallel concatenated (Turbo) encoding and decoding. Turbo encoders receive a sequence of input data tuples and encode them. The input sequence may correspond to a sequence of an original data source, or to an already coded data sequence such as provide... | 09/02/2008 |
| 7421038 | Wireless local area network apparatus In one embodiment, a method of transmitting data from a transmitter in a wireless local area network (WLAN), where the transmitter has a timer and a modem. The transmitter periodically transmits a transmission signal that includes a timestamp field that includes a t... | 09/02/2008 |
| 7421037 | Reconfigurable transmitter with direct digital to RF modulator A radio frequency (RF) transmitter uses two digital-to-RF conversion modules to convert digital baseband signals into RF signals. In cartesian mode, baseband signals are conveyed to the conversion modules for RF conversion. In polar mode, baseband signals are conver... | 09/02/2008 |
| 7421043 | Method and/or apparatus for stabilizing the frequency of digitally synthesized waveforms An apparatus comprising a first circuit, a second circuit, a third circuit and a fourth circuit. The first circuit may be configured to generate a demodulated signal in response to (i) a modulated signal and (ii) a seed value. The second circuit may be configured to... | 09/02/2008 |
| 7421255 | Transmission apparatus and mobile communication terminal apparatus An output level of a transmission apparatus 1 is determined, depending on an attenuation amount of an attenuator 30, a gain of one of a high output level amplification section 17 and a low output level amplification section 18, which is u... | 09/02/2008 |
| 7421033 | Method for improving the performance of a coding in a radio communications system The invention relates to a method for improving the performance of data transmissions over a communications channel, wherein data is coded and modulated for transmission, wherein coding the data results in differently coded bits. In order to allow for a simple way o... | 09/02/2008 |
| 7417972 | Method and system for transmitting data and for determining the transmission properties in a radio communications system A possibility for transmitting data via a radiolink with a timeslot structure in a radiocommunications system is described, measurement data for determining the transmission characteristics of the radiolink being inserted within the timeslot structure in dependence ... | 08/26/2008 |
| 7418048 | Tone ordered discrete multitone interleaver A tone ordered discrete multitone interleaver system and method, including a tone ordered interleaver and deinterleaver, are provided for efficiently communicating data despite noise affecting a Discrete Multitone modulation (DMT) system. The tone ordered discrete m... | 08/26/2008 |
| 7418039 | Adaptive communication The invention provides a system for analysing a signal received over a channel to determine the channel characteristics. The determined characteristics are then used to divide the sub-carriers up into groups with similar fading characteristics and allocating a pilot... | 08/26/2008 |
| 7418041 | Transmitting/receiving apparatus and method for reducing PAPR in an OFDM mobile communication system A block coding apparatus and method in an OFDM mobile communication system are provided. They reduce PAPR to 3 dB or less, while increasing a traditional block coding rate by twice, by use of complementary sequences. Therefore, spectral efficiency is improved by twi... | 08/26/2008 |
| 7418054 | Transmitter adjustment based on transmission statistics A WLAN (Wireless Local Area Network) transmitter or another data communications apparatus is provided that includes a transmission section that is configured to generate signals to be transmitted, and a control section that is connected to the transmission section t... | 08/26/2008 |
| 7415066 | Mis-matched modulation-demodulation format selectable filters Modulation-demodulation format selectable (MFS) processor, cross-correlator and transmit filter for processing, cross-correlating and filtering in-phase and quadrature-phase baseband signal and providing a first bit rate and a second bit rate baseband signal to a mo... | 08/19/2008 |
| 7415077 | Transmission arrangement, particularly for mobile radio The invention specifies a transmission arrangement, particularly for mobile radio, which has a homodyne design and in which a feedback path is routed from the input or from the output of the vector modulator (10, 11, 12, 14) via a switch (20) and an A/... | 08/19/2008 |
| 7415062 | Switching system supporting data communications supported by multiple power spectra In a particular embodiment, a system for communicating data includes a data switch coupled to one or more CPE devices. The data switch may communicate with one or more CPE devices using a first predetermined PSD and using a second predetermined PSD. The operability ... | 08/19/2008 |
| 7411931 | Inter-frequency measurements with MIMO terminals The invention is a terminal, system and method for providing inter-frequency and inter-system handovers. A terminal 20′ in accordance with the invention includes at least one radio transceiver including P radio receivers and at least one transmitter (16 | 08/12/2008 |
| 7410260 | Use of a CCD camera in a projector platform for smart screen capability and other enhancements An optical projection and capture system includes an image sensor integrated with an optical projection device. Additionally, the integrated device may be coupled with a laser pointer to deliver interactive presentations. The laser pointer may be pulsed to improve i... | 08/12/2008 |
