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Match Document Document Title
8774321 Clock data recovery circuit and clock data recovery method  
A clock data recovery circuit includes: a demodulation filter that receives a transmission signal transmitted by two orthogonal carrier waves having I and Q phases and executes demodulation to...
8731120 Feedback-controlled biased inverting limiter for RFI suppression  
A method and apparatus is provided for reducing interference in a communication system. A feedback-controlled biased inverting limiter is used to reduce interference power by trapping the...
8729960 Dynamic adjusting RFID demodulation circuit  
A dynamic adjusting RFID demodulator circuit includes an envelope detector having an input for receiving a modulated RF signal, a fixed reference generator coupled to the input of an RC filter, an...
8559564 Transmitting/receiving system and method of processing broadcast signal in transmitting/receiving system  
A receiving system and a method of processing broadcast signals in the receiving system are disclosed. The receiving system includes a tuner, a known sequence detector, a carrier recovery unit, a...
8537907 Receiving system for use in near field communication and mode detection method therefore  
A method of detecting a communication mode is provided to rapidly detect which one of near field communication (NFC) protocols includes a communication frame pattern of data provided to a...
8525585 Demodulation circuit and RFID tag including the demodulation circuit  
An object is to provide a demodulation circuit having a sufficient demodulation ability. Another object is to provide an RFID tag which uses a demodulation circuit having a sufficient demodulation...
8508293 Amplitude shift keying demodulator and method for demodulating an ask signal  
An ASK demodulator comprises a rectification circuit which receives and rectifies an ASK signal to generate a rectified current; an active load circuit is coupled to the rectification circuit and...
8339193 Demodulator for simultaneous multi-node receiving and the method thereof  
The present invention relates to a demodulator for simultaneous multi-node receiving and a method therof; and, more particularly, a demodulator in a wireless communication system for receiving...
8299849 Binarization circuit, demodulation circuit, and tuner for vehicle  
A binarization circuit includes a comparator that outputs a signal according to a differential voltage between the input and reference voltages. The first charging-discharging circuit generates a...
8258862 Demodulation circuit and RFID tag including the demodulation circuit  
An object is to provide a demodulation circuit having a sufficient demodulation ability. Another object is to provide an RFID tag which uses a demodulation circuit having a sufficient demodulation...
8238495 Method and apparatus for reducing the interferences between a wideband device and a narrowband interferer  
A method includes a main interference reduction mode for reducing the interference generated by a wideband device toward a narrowband device. The main interference reduction mode is performed...
8238479 Synchronization and acquisition for mobile television reception  
A method for synchronizing a receiver to a received signal begins by down-converting the received signal to a first baseband signal. A coarse frequency offset (CFO) of the first baseband signal is...
8170148 Demodulation circuit, digital microwave system and demodulation method  
A demodulation circuit, a digital microwave system including the demodulation circuit, and a signal demodulation method are provided. The demodulation circuit includes a first circuit, a second...
8138825 Multi-chip stack structure and signal transmission method thereof  
A multi-chip stack structure and a signal transmission method are disclosed in specification and drawing, where the multi-chip stack structure includes first and second chips. The first chip...
8120419 Apparatus for type-A demodulation and integrated circuit card including the same  
A type-A demodulator comprising a first rectifier configured to rectify a radio frequency (RF) signal received through an antenna and output a first voltage, a second rectifier configured to...
8102202 Modem unit and mobile communication unit  
A modem unit includes a first semiconductor die that includes a power management unit and an embedded flash memory. A mobile communication unit includes a modem unit residing on a first...
8085877 Method and system for quadrature local oscillator generator utilizing a DDFS for extremely high frequencies  
Methods and systems for a quadrature local oscillator generator utilizing a DDFS for extremely high frequencies. Aspects of one method may include utilizing the DDFS to generate a first signal...
8068571 Featureless coherent chaotic amplitude modulation  
Systems (400, 500, 600) and methods (300) for generating a chaotic amplitude modulated signal absent of cyclostationary features by preserving a constant variance. The methods involve: generating...
8064531 Method and apparatus for interferer parameter estimation using multiple receiver arbitration  
In one embodiment, a receiver implements a method of demodulating a set of symbols dispersed within a time-frequency grid of a received OFDM signal. The method includes determining which one of...
8059767 Communications device and related method that detects symbol timing  
A communications device includes a signal input for receiving signals such as a binary phase shift keyed (BPSK) communications signal having a repeated preamble bit or symbol pattern. A modem...
8059766 Communications device and related method with reduced false detects during start of message bit correlation  
A communications device includes a signal input for receiving signals such as a binary phase shift keyed (BPSK) communications signal having a repeated preamble bit or symbol pattern. A modem...
8054920 Communications device and related method with improved acquisition estimates of frequency offset and phase error  
A repeated preamble bit or symbol pattern such as for a binary phase shift keyed (BPSK) communications signal is received within a modem. An initial frequency offset and phase error estimate is...
8045640 Two-level demodulation method and device  
The invention relates to a method for demodulating information emitted by amplitude modulation with two levels by a reader (2) to a transponder (4), comprising a step to determine if this symbol...
8019021 Carrier to interference and noise ratio (CINR) estimating method and device using preamble in orthogonal frequency division multiplexing (OFDM)  
A device and a method for estimating a Carrier to Interference-plus-Noise Ratio (CINR) in an Orthogonal Frequency Division Multiplexing (OFDM) system are provided. The CINR estimating method...
7907005 Demodulation circuit for ASK coded or amplitude modulated signals as wells as NFC and RFID devices comprising the same  
Conventional modulation envelope demodulators for amplitude modulated signals (e.g. ASK coded signals RX) contain rectifier elements which extract a baseband signal BB. Disadvantageously, due to a...
7881397 Wireless communication system  
Methods and systems for modulating a signal are described. A phase-modulated signal that includes a sequence of contiguous one-cycle sinusoidal waveforms having a frequency above 50 MHz is...
7876150 ASK demodulator, communication module, communication device, and ASK demodulation method  
According to one embodiment, an ASK demodulator includes a rectifier, a first low-pass filter, a second low-pass filter, a comparator, and a threshold controller. The rectifier rectifies an ASK...
7855595 High dynamic range ASK demodulator for use in an RFID transponder  
An ASK demodulator for use in an RFID transponder having a limiter circuit associated with the antenna circuit and converting the ASK antenna field strength modulation into an ASK limiter current...
7804917 Clear channel assessment method and system for ultra wideband OFDM  
An ultra-wideband clear channel assessment system uses a double-window energy technique for energy detection, which indicates a clear or busy channel.
7720177 System and method for detecting known sequence in transmitted sequence  
A known sequence of symbols is located within a transmitted sequence of symbols by estimating the phase differences between offset symbols within a portion or more of the transmitted sequence,...
7620122 Communication apparatus including a demodulator having a tone detection mechanism  
A communication apparatus includes a receiver may receive a signal including one or more frequencies associated with a symbol. The symbol may be any type of symbol such as a text telephone symbol...
7609109 Contactless IC card system  
In a contactless IC card system, a modulating circuit manufactured in an IC form is operable at a high power efficiency. The demodulating apparatus is configured to include: signal processing...
7570713 System and method for anticipatory receiver switching based on signal quality estimation  
A system and method of switching from a first receiver receiving a constant bit rate signal to a second receiver receiving the constant bit rate signal, where the constant bit rate signal received...
7554332 Calibration apparatus, calibration method, testing apparatus, and testing method  
There is provided a calibration apparatus for calibrating an electronic device that outputs a demodulation signal in which a modulated component of a signal to be tested or evaluated is...
7525374 Multi-level demodulation method and device  
The invention relates to a method for demodulating information emitted by amplitude modulation by a reader (2) to a transponder (4) comprising: a step to compare variations of a slaving voltage...
7508257 Low-power digital demodulator  
Apparatus for demodulating a train of pulses includes a one-shot device having an asynchronous data input terminal, which is configured to receive the train of pulses, and a one-shot data output...
7446695 Precision pulse detection system for radar sensors  
A precision pulse detection system for time-of-flight sensors detects a zero axis crossing of a pulse after it crosses above and then falls below a threshold. Transmit and receive pulses flow...
7417496 Demodulator circuit of RFID system  
Provided is a demodulator circuit allowing a tag or transponder to efficiently recover data of an input amplitude signal at very low power in a wireless communication system such as a radio...
7394875 Beaulieu series approach to optimal UMTS RACH preamble detection estimation  
A method for preamble detection in mobile unit to base unit wireless telephony sets a preamble detection threshold based upon a Beaulieu series computation dependent upon preamble correlation...
7336736 Method of detecting and processing pulsed signals in a radio signal  
The invention allows the detection and processing in a radio signal received by a receiver, of any signal of “pulsed” type present in radio signals applied to the input of a radiofrequency...
7260158 Digital broadcast receiver and digital broadcast receiving method  
A digital broadcast receiver capable of adequately receiving a higher-level layer service along with a lower-level layer service even if the reception CNR degrades. A demodulation decoding section...
7251573 Phase detector  
The present invention concerns a phase Detector for detecting a phase difference between a data clock DATA-CLK and a reference clock REF-CLK using a data signal DATA. A trasnsition of the data...
7190216 Demodulation circuit and receiving set  
In a sampling block 40a-1, an intermediate frequency signal RIFs is sampled at a frequency of the intermediate frequency signal RIFs multiplied by “1/(m+0.25)” or “1/(m+0.75)” (m: 0 or natural...
7145965 Digital demodulator for terrestrial receiver  
A method and a demodulator for processing a Fast Fourier Transform using data blocks include a Fast Fourier Transform (FFT) coprocessor and a digital signal processor (DSP). The FFT coprocessor...
7119610 Circuit arrangement  
Circuit arrangement for demodulating a voltage which is ASK modulated by alternating the amplitude between a low and a high level. Respective charging voltages are produced on first and second...
7061993 CDMA receiver architecture for lower bypass switch point  
A bypass circuit around a filter and RF amplifier of a front end device is activated when a received signal strength (RSS) passes a threshold in which the filter and RF amplifier are not necessary...
7012462 Demodulation circuit  
A circuit and method for demodulating at least one modulated signal (e), such as a measuring signal of a sensor. The circuit comprises at least one input (1), with the signal (e) being applied to...
6861901 Voltage follower circuit  
A voltage follower comprising a first field-effect transistor (MN1) whose gate forms the input of the voltage follower. Further provided is a second field-effect transistor (MN2) whose drain...
6784730 Contactless IC card system  
In a contactless IC card system, a modulating circuit manufactured in an IC form is operable at a high power efficiency. The demodulating apparatus is configured to include: first signal output...
6768373 Circuit configuration for demodulating a voltage which is ASK modulated by altering the amplitude between a low level and a high level  
The invention provides a circuit configuration for demodulating a voltage that is ASK modulated by altering the amplitude between a low level and a high level. In this case, a first and a second...

Matches 1 - 50 out of 267 1 2 3 4 5 6 >