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| Number | Title | Issue Date |
| 8149954 | Baseline wander compensation for perpendicular recording A tail estimate signal which includes noise associated with baseline wander is generated. The tail estimate signal is generated by processing an input signal using a detector to obtain one or more decisions. Using the one or more decisions, the tail estimate signal ... | 04/03/2012 |
| 8126085 | Method and apparatus to estimate channel tap Briefly, a method an apparatus and a wireless communication device are provided. The wireless communication device includes a receiver to receive complex sequences of symbols. The receiver includes an estimator to estimate one or more channel taps. The estimator inc... | 02/28/2012 |
| 8111784 | On-chip data signal eye monitoring circuitry and methods Methods and apparatus for gathering information about the eye of a high-speed serial data signal include sampling each bit of a repeating, multi-bit data pattern at several eye slice locations. For any given eye slice location, each bit in the data pattern is compar... | 02/07/2012 |
| 8054915 | Method and device for adjusting a pulse detection threshold, and pulse detection and corresponding receiver The invention relates to a method for adjusting a pulse detection threshold consisting in detecting a pulse when the edge of said pulse envelop crosses the threshold, in allocating (A) a staring value (TH0) to the threshold and in adjusting (B1... | 11/08/2011 |
| 8005168 | Communication apparatus using chaotic signal and method thereof A communication apparatus using a chaotic signal and a method thereof are provided. The communication apparatus includes a correlator which multiplies source data by one of an optical orthogonal code (OOC) and a prime sequence code (PSC), and outputs transmission da... | 08/23/2011 |
| 7974366 | Low-latency baseline-wander compensation systems and methods Disclosed herein are systems and methods for detecting a signal to provide a detected data sequence, comprising providing a plurality of candidate data sequences, computing baseline wander estimates associated with respective ones of the candidate data sequences, co... | 07/05/2011 |
| 7961817 | AC coupling circuit integrated with receiver with hybrid stable common-mode voltage generation and baseline wander compensation In a receiver, an AC-coupling solution uses a fully integrated circuit for simultaneously providing both baseline wander compensation and common-mode voltage generation. Usefully, an integrated capacitor is placed between the receiver input pin and the input buffer,... | 06/14/2011 |
| 7889815 | Burst mode receiver for passive optical network A receiver assembly for use in an optical telecommunications network is provided that automatically generates a reference level for the incoming signal burst based on its preamble without the need to pre-process the entire signal burst. The entire signal burst is fe... | 02/15/2011 |
| 7873123 | Null detector and method thereof A null detector and its corresponding method are provided. The null detector includes a power detector, a smoother, and an overlapper. The power detector outputs a power level signal according to the power level of a received signal. The smoother is coupled to the p... | 01/18/2011 |
| 7864890 | Signal processing apparatus, signal processing method and storage system A signal processing apparatus has a plurality of baseline wander correcting units, provided in a processing path in which a predetermined processing is performed on an input signal. At least one of the plurality of baseline wander correcting units includes a correct... | 01/04/2011 |
| 7864889 | Method and system for establishing an adaptable offset for a receiver A method and system of establishing an offset for a receiver. In one embodiment, a method includes receiving an input signal and generating a first signal. The method can further include integrating the input signal and the first signal at a reference node. In addit... | 01/04/2011 |
| 7835466 | Baseline wander compensation for perpendicular recording Baseline wander is removed. A first decision signal is generated from an input signal using a first detector. Baseline wander associated with the input signal is estimated using the first decision signal. The estimated baseline wander is removed from the input signa... | 11/16/2010 |
| 7809087 | Power detection techniques and discrete gain state selection for wireless networking A wireless communication device may include a receiver coupled to a modem. The receiver may receive a wireless packet according to a wireless networking protocol such as a protocol in the IEEE 802.11 family of wireless protocols. Upon receiving a packet, the receive... | 10/05/2010 |
| 7769110 | Threshold adjust system and method An adaptive algorithm is implemented that optimizes the slicer threshold by optimizing the tail distribution of a “+1” and “−1” histogram. Through the use of a low resolution and under-sampled ADC, a histogram of received bit may be created. The difference... | 08/03/2010 |
| 7756220 | Circuit and method for baseline wandering compensation A circuit and a method for baseline wandering compensation for solving the problem of baseline wandering in receivers of a communication system are provided. Two paths of baseline wandering compensation are provided on the basis of a slicer error. One of the paths a... | 07/13/2010 |
| 7746959 | Method and system for generating reference voltages for signal receivers A method and system for generating a reference voltage for memory device signal receivers operates in either a calibration mode or a normal operating mode. In the calibration mode, the magnitude of the reference voltage is incrementally varied, and a digital signal ... | 06/29/2010 |
| 7729453 | System and method for fast dynamic adjustment of slicing level for burst mode optical receivers Systems and methods for determining a slicing level which is used as a threshold to determine whether timeslots of an incoming data signal contain ones or zeros. The method of one embodiment comprises receiving a data signal, identifying a maximum level of the data ... | 06/01/2010 |
| 7711071 | Setting the slice level in a binary signal A method of setting the slice level (SL) in a binary signal (T) comprises measuring the noise level at both signal levels (A,B) and adjusting (Z) the slice levels in dependence upon the measured noise levels. By weighing the noise levels, asymmetric noise is taken i... | 05/04/2010 |
| 7706473 | Comparative signal strength detection A method for signal strength detection begins by comparing a signal strength representation of a signal with a signal strength representation of a reference signal. The method continues by adjusting, when the signal strength representation of the signal compares unf... | 04/27/2010 |
| 7697635 | Method and apparatus for controlling the decision point of a receiver for digital communication signals A receiver for a digital communication signal has a first decision gate (DGa), which has a first decision threshold (xd) for outputting a first decision signal, a second decision gate (DGb), which has a second decision threshold (xm) for outputting a second decision... | 04/13/2010 |
| 7684518 | Logic threshold acquisition circuits and methods using reversed peak detectors A circuit is provided which generates a first output signal and a second output signal. The circuit includes a reference signal input having a reference value, a first positioning circuit, and a second positioning circuit. The first positioning circuit generates the... | 03/23/2010 |
| 7680216 | Adaptive thresholds for high speed downlink shared control channel (HS-SCCH) (part I) detection schemes A technique is provided for implementing adaptive thresholds associated with HS-SCCH detection schemes; and when applied to any HS-SCCH detection scheme, the resulting false alarm probability curves are more robust to amplitude variations of the different shared con... | 03/16/2010 |
| 7643576 | Data-signal-recovery circuit, data-signal-characterizing circuit, and related integrated circuits, systems, and methods A data-signal-recovery circuit includes a flip-flop and a controller. The flip-flop has an adjustable sampling threshold, and, in response to a sampling clock, is operable to generate a recovered digital signal having a first level if an input data signal is above t... | 01/05/2010 |
| 7623593 | Data receiving apparatus capable of compensating for reduced timing margin caused by inter-symbol interference and method thereof Provided are a data receiving apparatus that can determine data by adjusting a reference level for determining a logic value of inputted data based on Inter-Symbol Interference in a data signal inputted through a transmission line, and receive the data without error... | 11/24/2009 |
| 7602860 | Method and system for decoding multilevel signals A multilevel optical receiver can comprise a plurality of comparators that generally correspond with the number of levels in a multilevel data stream. Each comparator can be individually controlled and fed a decision threshold in order to decode a multilevel signal.... | 10/13/2009 |
| 7570715 | Digital signal receiving circuit A delayed peak detector detects a peak level of an input signal IN at timing lagged behind a peak detector, and a peak difference detector detects a peak difference PLD between a delayed peak level DPL and a peak level PL. A reset portion outputs a reset signal BRS ... | 08/04/2009 |
| 7570714 | Data transfer apparatus for low voltage differential signaling A data transfer apparatus is composed of a transmitter and a receiver. The transmitter includes an output buffer developing a differential signal in response to a data signal, and an amplitude controller. The receiver includes an input buffer converting the differen... | 08/04/2009 |
| 7558338 | Method and apparatus for I/Q imbalance estimation An apparatus and method for estimating an I/Q imbalance parameter of a receiver and a transmitter. An apparatus for estimating an I/Q imbalance parameter of a receiver, the apparatus comprising: a signal generator; a transmitter; a receiver; and an estimator. An app... | 07/07/2009 |
| 7499505 | Trellis decoding with finite constellation boundaries System and method for improving trellis decoding in communications systems with finite constellation boundaries. A preferred embodiment for a received point of a tone when the tone represents a number of bits greater than three comprises determining if a received po... | 03/03/2009 |
| 7492834 | Regenerating apparatus, regenerating method, and receiver A regenerating apparatus includes an identification circuit, an error correcting circuit, an abnormality detecting circuit which generates an alarm when a predetermined abnormal operation is detected, a threshold value adjusting circuit which adjusts the threshold v... | 02/17/2009 |
| 7489740 | Receiver with baseline wander compensation A receiver with baseline wander compensation is applicable to a digital communication system. The receiver includes an Analog-to-Digital Converter (ADC), a slicer, a threshold value detector, a gain controller, a baseline wander compensator, a delay circuit, an anal... | 02/10/2009 |
| 7466765 | Receiver for high bitrate binary signals A receiver for high bitrate binary signals contains a soft decision circuit with three parallel deciders coupled to a 2:1 multiplexer. The three deciders have different threshold values and generate four potential states. The 2:1 multiplexer translates the four diff... | 12/16/2008 |
| 7443924 | Residual carrier and side band processing system and method In a communication device, the LO leakage and opposite side band signals are measured at an output signal. Input processing signals to a modulator are adjusted in response to the measured values to minimize the LO leakage and maximize side band suppression. ... | 10/28/2008 |
| 7433431 | Staggered AGC with digitally controlled VGA A method of and device for automatic gain control (AGC) incorporates digitally controlled variable gain amplifiers (VGAs). An AGC circuit comprises multiple AGC stages, where each of the stages comprises: respective I and Q VGAs; a detector for detecting respective ... | 10/07/2008 |
| 7424230 | Digital transmission system This digital transmission system is provided with a transmitting apparatus that transmits digital data signals and a receiving apparatus that receives the digital data signals transmitted over a transmission path, compares the signals with a predetermined threshold ... | 09/09/2008 |
| 7421250 | Radio frequency integrated circuit A radio frequency (RF) integrated circuit (IC) includes a local oscillation module, analog radio receiver, analog radio transmitter, digital receiver module, digital transmitter module, and digital optimization module. The local oscillation module is operably couple... | 09/02/2008 |
| 7418212 | Electrical detection of optical symbols A system and method for detecting digital symbols carried in a received optical signal. The system comprises a functional element operative to receive a stream of samples of an electrical signal derived from the received optical signal and to evaluate a non-linear f... | 08/26/2008 |
| 7403059 | Baseline wandering correction device and method A baseline wandering correction device for correcting baseline wandering of signals at a first output terminal and a second output terminal of a receiver includes: a control circuit for outputting a control signal according to voltages of the first and the second ou... | 07/22/2008 |
| 7388933 | Wireless communication system having adaptive threshold for timing deviation measurement and method A system and method of wireless communication determines received signal timing deviation which is used to generate a timing advance for adjusting wireless transmit receive unit (WTRU) transmissions. An adaptive threshold for measuring the timing deviation is set ba... | 06/17/2008 |
| 7386067 | Frequency offset cancellation circuit for data determination in wireless communications A demodulating semiconductor integrated circuit device used in a wireless communication system of an FM-modulation scheme, wherein a circuit for canceling a frequency offset is made of a digital circuit, so as to make a high-accuracy decision as to received data and... | 06/10/2008 |
