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Class Information
Number: 375/319
Name: Pulse or digital communications > Receivers > Automatic baseline or threshold adjustment > Automatic bias circuit for dc restoration
Description: Subject matter including a means for eliminating unwanted DC offset voltages in a receiver for decoding the digitally modulated signals.

Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8687981 Method and system for split voltage domain transmitter circuits Apr. 1, 2014
8687669 Automatic gain control and DC offset compensation Apr. 1, 2014
8681842 Transforming I/Q impairments through a linear system Mar. 25, 2014
8675777 Programmable if frequency filter for enabling a compromise between DC offset rejection and image rejection Mar. 18, 2014
8649464 Quadrature receiver and method of compensating for I/Q imbalance using a calibration signal Feb. 11, 2014
8638883 DC offset cancellation in direct conversion receivers Jan. 28, 2014
8634447 Adaption of medium access and transmission parameters for wireless networks Jan. 21, 2014
8614594 Downconverter, downconverter IC, and method for controlling the downconverter Dec. 24, 2013
8611467 DC offset correction techniques Dec. 17, 2013
8582692 Systems and methods for calibrating digital baseband DC offset in an OFDM receiver Nov. 12, 2013
8565110 Apparatus and method for receiving data in communication system Oct. 22, 2013
8565351 Channel impulse response (CIR)/DC offset (DCO) joint estimation block and method Oct. 22, 2013
8559559 Method and apparatus for compensating DC offsets in communication systems Oct. 15, 2013
8559565 Wireless communication unit and method for DC offset estimation Oct. 15, 2013
8542784 Spur mitigation for radio frequency receivers utilizing a free-running crystal Sep. 24, 2013
8532225 DC compensation for VLIF signals Sep. 10, 2013
8526541 Method and apparatus for compensating for DC offset in a communication system Sep. 3, 2013
8509356 Method and system for blocker and/or leakage signal rejection by DC bias cancellation Aug. 13, 2013
8503545 I/Q imbalance compensation Aug. 6, 2013
8461896 Compensating for wander in AC coupling data interface Jun. 11, 2013
8442155 Procedure for the removal of the DC component inherent in any radio frequency chain May. 14, 2013
8437429 Data processing apparatus and data processing system including the same May. 7, 2013
8437430 Remote transmit IQ imbalance calibration and correction at multicarrier receivers May. 7, 2013
8428186 Decision directed DC offset removal Apr. 23, 2013
8411797 Frequency offset compensation in a digital frequency shift keying receiver Apr. 2, 2013
8406358 Radio-frequency apparatus with programmable performance and associated methods Mar. 26, 2013
8396167 DC compensation Mar. 12, 2013
8385456 Wireless radio frequency signal transceiving system Feb. 26, 2013
8380149 DC offset canceller, receiving apparatus and DC offset cancellation method Feb. 19, 2013
8369714 Burst optical signal receiving device Feb. 5, 2013
8351490 Radio frequency identification transceiver Jan. 8, 2013
8345801 Apparatus and method for signal mismatch compensation in a wireless receiver Jan. 1, 2013
8345779 Pulse transformer driver Jan. 1, 2013
8311155 Electronic tuner and high frequency receiving device using the same Nov. 13, 2012
8295371 Multi-carrier receiver for wireless communication Oct. 23, 2012
8284860 Error signal processing systems for generating a digital error signal from an analog error signal Oct. 9, 2012
8270537 Antenna device, demodulating device and receiving device Sep. 18, 2012
8265129 Digital receiver with system for controlling the operating mode of an adaptive equalizer Sep. 11, 2012
8259858 Carrier detect system, apparatus and method thereof Sep. 4, 2012
8238451 Network transmitting apparatus and power saving method thereof Aug. 7, 2012
8218686 Circuit and method for DC offset compensation Jul. 10, 2012
8208592 Receiver Jun. 26, 2012
8204154 DC offset calibration Jun. 19, 2012
8199864 Quadrature phase shift keying demodulator of digital broadcast reception system and demodulation method thereof Jun. 12, 2012
8189707 DC offset correction of a radio frequency receiver used with a continuous transmission radio frequency signal May. 29, 2012
8175192 Method and system for determining and removing DC offset in communication signals May. 8, 2012
8170147 Apparatus for cancelling DC offset and method thereof May. 1, 2012
8164494 Method and device for digitally correcting DC offset Apr. 24, 2012
8160164 Wireless communication unit and method for channel estimation Apr. 17, 2012
8150272 Systems and methods for transferring single-ended burst signal onto differential lines, especially for use in burst-mode receiver Apr. 3, 2012

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