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7545888 |
Apparatus for and method of controlling a digital demodulator coupled to an equalizer
A method of controlling a digital demodulator ( 922 ) coupled to an equalizer ( 930 ) includes the steps of generating an equalizer value ( 930 A), filtering ( 944 ) the equalizer value ( 930 A) to...
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7545861 |
Timing recovery circuit and timing recovery method
A timing recovery circuit for a receiver may include a timing error detector that generates a timing error based on differences between coefficients of a feed-forward filter and a feed-back filter....
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7541966 |
Apparatus and method for demodulating a modulated signal
An apparatus for demodulating a modulated signal comprises an analog to digital converter ( 2, 12 ) for converting an analog modulated input signal to a digital signal. The analog to digital...
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7542524 |
Radio wave receiver, radio wave reception integrated circuit, wave clock, and repeater
A circuit for canceling noise components is provided for a radio wave receiver which receives a long wave standard radio wave. The circuit includes a multiplier, a divider, a differentiation...
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7539255 |
Using multiple pilot signals for timing error estimation in digital subscriber line communications
A receiving modem ( 20 ) including functionality for adjusting the synchronization of its timing relative to a transmitting modem ( 10 ), by recovering timing from a plurality of pilot tones...
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7535976 |
Apparatus and method for integration of tuner functions in a digital receiver
A receiver to process a RF input signal having a plurality of channels includes a direct down conversion circuit, a demodulation circuit, and a local oscillator circuit. The direct down conversion...
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7529329 |
Circuit for adaptive sampling edge position control and a method therefor
A clock and data recovery circuit (CDR) for receiving high-speed digital data, and having an analog phase offset control capability, is improved by providing an adaptive sampling edge position...
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7529314 |
Carrier phase detector
Carrier phase detector for calculation of a feedback signal (D) for a carrier phase loop in a receiver,
which loop detects a phase error (Δφ) between a phase (φ in ) of a received signal (E in...
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7529320 |
Format efficient timing acquisition for magnetic recording read channels
A timing recovery circuit for magnetic recording applications that use preamble synchronization bits. The timing recovery circuit uses a modified digital phase lock loop having a digital rotator....
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7526049 |
Data sampling circuit and semiconductor integrated circuit
A data sampling circuit has a receiver which receives an embedded clock obtained by multiplexing a clock signal and data, a phase comparator which outputs a phase difference signal by performing a...
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7526250 |
Apparatus, system and method for flip modulation in an impulse radio communications system
Apparatuses, systems and methods for transmitting and receiving modulated impulse radio signals. An impulse radio receiver includes a time base, a precision timing generator, a template generator,...
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7522686 |
CMOS burst mode clock data recovery circuit using frequency tracking method
Provided is a burst mode clock data recovery circuit for extracting clock information and data information from transmitted data to process data synchronized with clock. The circuit includes a...
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7515653 |
Digital broadcasting receiver, driving method thereof, and self-diagnosis method thereof
A digital broadcasting receiver, a driving method, and a self-diagnosis method thereof, are provided. The digital broadcasting receiver includes: a digital demodulator for demodulating a digital...
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7515656 |
Clock recovery circuit and data receiving circuit
A clock recovery circuit has a boundary detection circuit detecting a boundary in an input signal in accordance with a first signal, and performs recovery of a clock by controlling the timing of...
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7515657 |
Frequency tracking for OFDM transmission over frequency selective channels
A system comprises a receiver module that generates a receiver carrier frequency and that demodulates an orthogonal frequency division multiplexing (OFDM) signal using the receiver carrier...
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RE40695 |
Clock phase detecting circuit and clock regenerating circuit each arranged in receiving unit of multiplex radio equipment
The present invention relates to a clock phase detecting circuit and a clock regenerating circuit each arranged in a receiving unit of multiplex radio equipment. The receiving unit of the multiplex...
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7512202 |
Harmonic detector system and method
A harmonic detector including a pattern detector circuit responsive to a clock signal and a data signal configured to detect a target bit pattern from said data signal, and a time-out circuit...
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7508888 |
Method and apparatus for precise open loop tuning of reference frequency within a wireless device
A communications subsystem for a wireless device for correcting errors in a reference frequency signal. The communications subsystem comprises a frequency generator for generating the reference...
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7499507 |
Synchronization module using a Viterbi slicer for a turbo decoder
A method for synchronizing receivers that receive turbo encoded signals to a received signal. Turbo encoding may enable signals to be decoded at a much lower signal to noise ratio than previously...
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7499509 |
Receiver for compensating nonlinearly distorted multicarrier signals
An apparatus for compensating nonlinearly distorted multicarrier signals, a multicarrier signal receiver using the same, and a method therefor are provided, where the apparatus for compensating...
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7496155 |
Duty cycle correction of a multi-gigahertz clock signal with crossover point control
A clock recovery circuit includes a crossover adjustment circuit operable to adjust a crossover point to adjust a corresponding duty cycle. The adjustment circuit comprises a feedback adjustment...
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7496156 |
Receiver having digital timing recovery function
The invention relates to a receiver having a digital timing recovery function. The receiver of the invention detects frequency offset of a received signal by using symbol correlation between the...
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7489742 |
System and method for clock recovery in digital video communication
A system for clock recovery in digital video communication includes a delay measurement block for generating PCR input signals and for continuously determining the time interval between successive...
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7486745 |
Method for improving multipath mitigator low path separation error behavior
A process is disclosed for discriminating between received ranging signals, such as GPS, GNSS, and radar signals, which arrive via a single path and those which arrive via multiple paths. The...
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7480350 |
Carrier recovery apparatus and broadcasting receiver using the same
Provided is a carrier recovery apparatus in a vestigial sideband modulation (VSB) type digital television (DTV) receiver. The carrier recovery apparatus dynamically controls a sign determination...
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7477325 |
Audio/video separator
An audio/video separator provides a high-performance and cost-effective solution to analog TV reception with only one A/D converter and a minimum of analog IF components. The apparatus may operate...
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7477708 |
Modes of operations in QAM modems
The method of selecting an optimum mode of operation of the QAM modem comprising (A) using a host interface to select a pair of states, the first state being an initial state; the second state...
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7474718 |
Frequency control for a mobile communications device
A mobile station in a TDMA network can perform automatic frequency using burst in all or any slot in a control channel. This is achieved by identifying the training sequence of an arbitrary set of...
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7474714 |
Phase/frequency detector for tracking receivers
A receiving device within a digital electronic system includes a sampling unit, a voter block, and a local clock phase adjustment unit. The sampling unit samples an input line at three points in...
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7469414 |
Fast and reliable data carrier detection by a cable modem in a cable television plant
Apparatus, methods, and computer program products for detecting or locating a viable data carrier in a downstream channel by a cable modem. Potential channels for data carriers can be eliminated...
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7463701 |
Fast symbol timing recovery for transmitted digital data
A system and method of recovering symbol timing from a high symbol rate TDD or TDMA broadband transmission. A correlator operating at a fraction of the symbol rate receives in-phase and quadrature...
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7457393 |
Clock recovery apparatus, method, and system
A global clock recovery circuit and port circuit determine and combine static phase adjustment information and dynamic phase adjustment information for multiple data signals. Static phase...
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7457375 |
Timing extractor, timing extraction method, and demodulator having the timing extractor
In a timing component extractor for a digital modulated signal, a frequency converting section 30 receives a complex baseband signal having a symbol rate fs and formed from an I signal and a Q...
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7453958 |
Method and device for extracting a clock frequency underlying a data stream
A device for extracting a clock frequency underlying a data stream includes means for controlling a controllable oscillator, coarse-tuning means and fine-tuning means, wherein coarse-tuning means...
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7450944 |
Method and apparatus for base station synchronization
An apparatus and method for monitoring ( 310 ) at least one factor relating to a wireless communication system ( 100 ) is provided such that a synchronization signal is sent ( 320 ) to at least one...
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7447277 |
Ofdm demodulation device
An OFDM receiver ( 1 ) is provided which includes a clock-frequency error calculation circuit ( 41 ) to calculate a difference in clock frequency between a clock for a received signal and an...
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7447262 |
Adaptive blind start-up receiver architecture with fractional baud rate sampling for full-duplex multi-level PAM systems
This invention presents a novel receiver architecture for full-duplex multi-level PAM systems. The receiver employs an Analog-to-Digital Converter (ADC) that has a sample rate flexibly specified as...
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7447958 |
Parallel input/output self-test circuit and method
A parallel data transmission test system can include a receiver section ( 100 ) having input selector circuits ( 104 -O to 104 -N) that provide a received test data to logic adjust circuits ( 106...
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7443930 |
Complex digital phase locked loop for use in a demodulator and method of optimal coefficient selection
A complex digital phase locked loop for use in a digital demodulator includes a phase detector for producing a phase error indicative of a difference in phase between a complex digital input signal...
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7443879 |
Communication between user agents through employment of codec format unsupported by one of the user agents
An apparatus in one example comprises one or more network controllers that serve to allow a second user agent to communicate with a first user agent through employment of a codec format unsupported...
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7443929 |
Method and circuit for adaptive control of the bandwidth of a carrier recovery loop in radio transmission systems
A method for adaptively controlling bandwidth of a carrier recovery loop in radio transmission systems, wherein the phase error in a PLL is adjusted to a minimum level by means of a loop filter...
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7424067 |
Methods and apparatus for synchronization of training sequences
A receiver and a method for receiving a signal including a carrier modulated with a known training sequence is described in which an estimate a carrier frequency offset is obtained from an...
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7420430 |
Method and arrangement for generating an output clock signal with an adjustable phase relation from a plurality of input clock signals
Method and arrangement for generating an output clock signal with an adjustable phase relation from a plurality of input clock signals. A method and an arrangement are provided for generating an...
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7421042 |
Carrier tracking loop lock detector
An ATSC (Advanced Television Systems Committee) VSB (Vestigial Sideband) receiver includes a carrier tracking loop (CTL) for processing a received ATSC VSB signal and a CTL lock detector. The CTL...
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7418040 |
Method and apparatus for determining a timing offset for processing a multi-carrier signal
A receiver 200 as a component in a wireless communication device 100 and a corresponding method are used for receiving a multi-carrier communication signal and determining a timing offset...
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7406141 |
Multi-band DMT receiver
There is disclosed a receiver for receiving a multi-band DMT signal. The receiver includes a plurality of demodulators, each demodulator having a discrete Fourier transform and being provided to...
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7406113 |
Integrated circuit for code acquisition
A semiconductor integrated circuit for processing a plurality of received broadcast signals, such as GPS signals, is operable in two modes: acquisition and tracking. In an acquisition mode, sample...
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7406137 |
Carrier recovery system and method thereof
A carrier recovery system includes an in-phase mixer for mixing an incoming signal with an in-phase reference signal to produce an in-phase baseband signal; a quadrature-phase mixer for mixing the...
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7403578 |
Robust burst detection and acquisition system and method
A method of parameter estimation in a shared channel communications system includes the steps of receiving a preamble including a first sequence corresponding to a sequence having zero...
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7403579 |
Dual mode QAM/VSB receiver
A television receiver system capable of receiving and demodulating television signal information content that has been modulated and transmitted in accordance with a variety of modulation formats...
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