Quotables
"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
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| Number | Title | Issue Date |
| 8121214 | Local oscillator with non-harmonic ratio between oscillator and RF frequencies using XOR operation A novel and useful apparatus for and method of local oscillator (LO) generation with non-integer multiplication ratio between the local oscillator and RF frequencies. The LO generation schemes presented are operative to generate I and Q square waves at a designated ... | 02/21/2012 |
| 8050350 | Receiver I-Q balance calibration In an I-Q receiver, I-Q baseband mixer receives a real signal, and outputs an in-phase baseband information signal and a quadrature baseband information signal, a decoupling compensator multiplies in-phase baseband information signal and the quadrature baseband info... | 11/01/2011 |
| 7646825 | Impulse generating device, communication device, and a computer-readable recording medium recording an impulse control program thereon To realize variable control of the output value of impulses with a simple construction, the present device includes an impulse generating unit which generates impulses; and a control unit which controls an output value of impulses output from the impulse generating ... | 01/12/2010 |
| 7426246 | Dual layer signal processing in a layered modulation digital signal system Systems and methods for receiving layered modulation for digital signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital co... | 09/16/2008 |
| 7412006 | Method and apparatus for RF carrier feedthrough suppression A method includes performing a search method to determine a pair of receiver path correction signals, performing the search method to determine a pair of transmitter path correction signals, and using the pairs of receiver path and transmitter path correction signal... | 08/12/2008 |
| 7409012 | Modulator and signaling method Phase shift key modulators (100, 500, 1000, 1400, 1700) are provided in which a multiphase signal source (108, 1402, 1406-1412,1702) is used to generate a plurality of phases of a carrier signal. A selector (110) is used to select one pha... | 08/05/2008 |
| 7359424 | Spread spectrum communication system and method therefor A spread spectrum communication system and a method can provide resistance against selective fading and can prevent lowering of circuit use ratio with lowering reception bit error ratio. The spread spectrum communication system has a control unit for controlling a t... | 04/15/2008 |
| 7356089 | Phase offset spatial multiplexing A rotation by a phase offset is applied to symbols to be transmitted by one antenna relative to symbols to be transmitted from another antenna in a wireless communication system employing multi-element antennas at the transmitter. Such a phase offset allows the func... | 04/08/2008 |
| 7336715 | Method for coded modulation taking account of the error sensitivity of the user data and encrypting said data after coding A method of coded modulation of digital data is described, the digital data being divided into parallel signal streams, and the useful bits then being channel coded at different code rates according to their error susceptibility. The useful bits channel coded differ... | 02/26/2008 |
| 7327961 | Differential encoder for an optical DQPSK modulator A modulator arrangement adapted to use a differential quadrature phase shift key for use in an optical wavelength division multiplex (WDM) optical communications system, comprising a precoder (16), which is adapted to generate drive voltages for first and sec... | 02/05/2008 |
| 7324859 | Substrate for use with audio file player A substrate includes at least one visual representation of an audio file and encoded data associated with the at least one audio file. The encoded data can be sensed by a selection device to cause an audio file stored in a computer system to be provided to the selec... | 01/29/2008 |
| 7324586 | Method and system for communication backward compatibility Communications method including the procedures of modulating a second generation carrier signal, with a first generation Baseband bandwidth signal, when transmitting to first generation devices, and, modulating the second generation carrier signal, with a second gen... | 01/29/2008 |
| 7319716 | Transmitter image suppression in TDD transceivers In a transceiver comprising a time-division-duplex (TDD) of transmit and receive functions, the characteristics of unwanted image signal energy being transmitted from the transceiver are determined, and thereafter feedback is provided to the transmitter to reduce th... | 01/15/2008 |
| RE39983 | Carrier injecting waveform-based modulation scheme for reducing satellite transponder power requirements and earth terminal antenna size A QPSK modulation scheme uses a data spreading mechanism to rob a relatively limited portion of available transmitter power, and inject into the QPSK waveform a prescribed amount of carrier signal power, through which detection and non-regenerative extraction of the... | 01/01/2008 |
| 7305042 | T1 radio having coding gain adjustable for number of channels A communication system for transmitting (T1) digital communication signals between a transmit site and a receiver site includes an M:1 multiplexer, coupled to a rate 1/N convolutional encoder, which is operative to output an encoded output signal modulated in... | 12/04/2007 |
| 7295785 | Receiver, electronic apparatus, and discharge lamp lighting apparatus A receiver includes a light-receiving portion which receives an infrared remote control signal from a transmitter, an A/D converter which converts a signal received by the light-receiving portion into a digital signal at a frequency much higher than a carrier wave, ... | 11/13/2007 |
| 7289567 | Apparatus and method for transmitting and receiving data using partial chase combining An apparatus and method for transmitting and receiving data, wherein retransmissions of information can be a different size from the initial transmission. The invention utilizes a partial Chase encoder 306 to truncate or expand data depending on the availabil... | 10/30/2007 |
| 7286887 | Audio player with sensing device An audio player (10) is provided with an image sensor (16) capable of imaging invisible infrared tags (78) on a substrate (70). The tags (78) encode identity data which is directly or indirectly associated in a computer system with... | 10/23/2007 |
| 7260159 | Method and apparatus for providing higher order modulation that is backwards compatible with quaternary phase shift keying (QPSK) or offset quaternary phase shift keying (OQPSK) A method and apparatus for providing an asymmetrical backwards compatible communications signal that is capable of being decoded by QPSK and OQPSK receivers as well as PSK and QAM receivers is provided. The invention comprises a timing error accumulator coupled to a... | 08/21/2007 |
| 7254203 | Method and apparatus for use of high sampling frequency A/D converters for low frequency sampling A method and apparatus for adding fill-in clock pulses to an analog to digital converters input clock signal between requests for analog data acquisition. The circuit that provides the fill-in clock pulses is able to detect a request for analog data acquisition, syn... | 08/07/2007 |
| 7251287 | Method and system for communication spectral backward compatibility Communications method including the procedures of modulating a second generation carrier signal, with a first generation Baseband bandwidth signal, when transmitting to first generation devices, and, modulating the second generation carrier signal, with a second gen... | 07/31/2007 |
| 7248652 | Method and apparatus for recovering timing information in orthogonal frequency division multiplexing (OFDM) systems An improved OFDM receiver is disclosed that repositions peaks in an OFDM frame to a desired position away from the frame boundary to reduce the probability of timing ambiguity. Each OFDM frame is divided into at least two windows during an acquisition mode to identi... | 07/24/2007 |
| 7245671 | Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers Systems and methods for receiving non-coherent layered modulation signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital c... | 07/17/2007 |
| 7206417 | Wireless digital transmission system for loudspeakers This invention relates to a wireless digital transmission system for loudspeakers comprising: compression means for the file representing the digital audio signal of the “compact disc” type, a transmission device comprising mea... | 04/17/2007 |
| 7173966 | Compensation for non-linear distortion in a modem receiver A method and modem receiver for receiving serial data from a transmission link, for recovering data from the received data, and for synchronizing the receiver timing to that of the transmitter are disclosed. A receiver equalizer includes a filter and quantizer in th... | 02/06/2007 |
| 7173981 | Dual layer signal processing in a layered modulation digital signal system Systems and methods for receiving layered modulation for digital signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital co... | 02/06/2007 |
| 7170431 | Data transmitting circuit and method based on differential value data encoding Disclosed is a data transmitting circuit and a method based on a differential value data encoding to reduce a data transmitting time by transmitting an encoded differential value. The circuit comprises an encoder for encoding and outputting a differential value betw... | 01/30/2007 |
| 7133641 | Wireless communication RF circuit and communication apparatus including the same A wireless communication RF circuit includes a transmitting-and-receiving antenna, a modulator circuit, an SPST switching circuit, and a demodulator circuit, which are arranged in a sequence. Upon signal reception, the SPST switching circuit is switched ON, and the ... | 11/07/2006 |
| 7120204 | Waveform generator operable in accordance with a plurality of band limitation characteristics A waveform generator comprises waveform generating means for generating a waveform signal band-limited using a first band limitation characteristic in accordance with the input signal series, memory means for storing in advance a difference signal between a waveform... | 10/10/2006 |
| 7099397 | Receiver of an orthogonal frequency division multiplexing system In an orthogonal frequency division multiplexing (OFDM) system, a receiver includes a received signal transformer, a frequency offset estimator and a frequency compensator. The received signal transformer removes from a training symbol a guardtone and a sub-carrier ... | 08/29/2006 |
| 7085500 | Programmable optical vector modulator and method for use in coherent optical communications A transmitter comprising a programmable optical vector modulator and method for coherent optical signal communication. The transmitter includes a transmitter laser whose output is coupled by way of an optical fiber to an amplitude modulator. The output of the amplit... | 08/01/2006 |
| 7072411 | Computation reduction in OFDM system using frequency domain processing Improved systems and methods for implementing Orthogonal Frequency Division Multiplexing (OFDM) systems and for computing Fast Fourier Transforms (FET) having strictly real outputs are provided. Systems and methods are provided for efficiently implementing an Invers... | 07/04/2006 |
| 7068728 | Carrierless backwards compatible data neworking transmitter, receiver, and signal format New version packet data devices support a backwards-compatible signal format. New version devices operate within a first frequency band while old version devices operate within a second frequency band. The first frequency band differs from but overlaps with the seco... | 06/27/2006 |
| 7062228 | Cellular communications system using baseband carrier injection and related methods A cellular communications system may include one or more cellular base stations and a plurality of mobile cellular communications devices for communicating therewith. More particularly, the cellular base station and the mobile cellular communications devices may eac... | 06/13/2006 |
| 7057538 | 1/N-rate encoder circuit topology An encoder circuit and a related method for its operation, in which digital encoding, such as differential phase-shift keyed (DPSK) encoding, is performed as a parallel operation on N bits at a time. Each encoded bit is both output in parallel with the others of the... | 06/06/2006 |
| 7054299 | Method and apparatus of pilot signal synchronization verifier Briefly, in accordance with one embodiment of the invention, a verifier and a method for verifying synchronization of at least one pilot signal pattern of a wireless communication system are disclosed. A method and a module of frequency acquisition are also disclose... | 05/30/2006 |
| 7020121 | Method and system for wireless digital multimedia transmission Digital Visual Interface (DVI), or High Definition Multi-media Interface (HDMI), data is received from a source and sent to a transmitter chip that includes a transition minimized differential signaling (TMDS) receiver that outputs a 3-data and 1-clock physical sign... | 03/28/2006 |
| 7016425 | Quasi-differential modulation/demodulation method for multi-amplitude digital modulated signals and OFDM system The invention proposes the separate processing of the phase and amplitude of multi-amplitude digital modulation techniques, such as a QAM. The phases are differentially modulated and the amplitudes coherently processed. Also proposed is a method to correct the ampli... | 03/21/2006 |
| 7009932 | Frequency tracking device for a receiver of a multi-carrier communication system A frequency tracking device (FTD) in particular for use in a OFDM communication system comprises a selector (SEL) which selects on the basis of N channel coefficients (Cest) a number M of subcarriers corresponding to the M channel coefficients (Cest | 03/07/2006 |
| 6996368 | System and method for reducing power consumption in a wireless communications network A method reduces power consumption in a multi-hop wireless communications network including a plurality of nodes. At a source node, a first power requirement for relaying a signal to a destination node through an intermediate node using an amplification mode is dete... | 02/07/2006 |
