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Class Information
Number: 329/312
Name: Demodulators > Pulse or interrupted continuous wave demodulator > Pulse width demodulator
Description: Subject matter where the modulated signal input to the demodulator has undergone pulse width modulation.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8660172 Pulse signal receiving apparatus and transmission system Feb. 25, 2014
8629716 Modulator, demodulator and modulator-demodulator Jan. 14, 2014
8564365 Wide input bit-rate, power efficient PWM decoder Oct. 22, 2013
8525585 Demodulation circuit and RFID tag including the demodulation circuit Sep. 3, 2013
8509318 Multiple-channel transmission over a single-wire bus Aug. 13, 2013
8315302 Pulse width modulator using interpolator Nov. 20, 2012
8284830 Pulse edge demodulation Oct. 9, 2012
8258862 Demodulation circuit and RFID tag including the demodulation circuit Sep. 4, 2012
8218704 Demodulation method and demodulator of pulse-edge shifted pulse Jul. 10, 2012
8054915 Method and device for adjusting a pulse detection threshold, and pulse detection and corresponding receiver Nov. 8, 2011
8044744 Time modulation with cosine function Oct. 25, 2011
7933325 Antenna driving apparatus Apr. 26, 2011
7881397 Wireless communication system Feb. 1, 2011
7778324 System for dynamic time offsetting in interleaved power amplifiers Aug. 17, 2010
7675358 Semiconductor device Mar. 9, 2010
7667534 Control interface and protocol Feb. 23, 2010
7626451 Data demodulation using an asynchronous clock Dec. 1, 2009
7508873 Digital amplifier, pulse width modulator thereof and method for reducing pop noise for the same Mar. 24, 2009
7471143 Apparatus and method for adaptive demodulation of PWM signal Dec. 30, 2008
7336705 Smart receiver for wireless peripherals Feb. 26, 2008
7336736 Method of detecting and processing pulsed signals in a radio signal Feb. 26, 2008
7295607 Method and system for receiving pulse width keyed signals Nov. 13, 2007
7079577 Wide window decoder circuit for dual phase pulse modulation Jul. 18, 2006
7061979 System and method for determining the data rate of a digital data stream Jun. 13, 2006
7024223 Systems and methods for a multi-platform wireless modem Apr. 4, 2006
7006936 Pulse width measuring device with automatic range setting function Feb. 28, 2006
6925115 Apparatus and method for safely handling asychronous shutdown of pulsewidth modulated output Aug. 2, 2005
6865425 State machine for a pulse output function Mar. 8, 2005
6775324 Digital signal modulation system Aug. 10, 2004
6359525 Modulation technique for transmitting multiple high data rate signals through a band limited channel Mar. 19, 2002
6198766 Method and apparatus for adaptive pre-demodulation pulse shaping Mar. 6, 2001
6185252 Process for decoding a digital signal and a bus system and a peripheral unit therefor Feb. 6, 2001
6169765 Apparatus and method for output signal pulse width error correction in a communications receiver Jan. 2, 2001
6157671 Apparatus and method for digitally monitoring a duty cycle of a pulse width modulated signal Dec. 5, 2000
5914987 Method of recovering symbols of a digitally modulated radio signal Jun. 22, 1999
5905406 Demodulator for a pulse width modulated signal and method May. 18, 1999
5864582 Pulse width extension with analog command Jan. 26, 1999
5621758 PWM Communication system Apr. 15, 1997
5553096 Gain control using PWM Sep. 3, 1996
5438328 Circuit for measuring pulse width of remote control signal Aug. 1, 1995
5367200 Method and apparatus for measuring the duty cycle of a digital signal Nov. 22, 1994
5363405 Vehicle communications network transceiver, bus driver therefor Nov. 8, 1994
5272448 Method and apparatus to perform digital demodulation by measuring periods between zero crossings Dec. 21, 1993
5239273 Digital demodualtor using signal processor to evaluate period measurements Aug. 24, 1993
5185765 High speed data communication system using phase shift key coding Feb. 9, 1993
5159281 Digital demodulator using numerical processor to evaluate period measurements Oct. 27, 1992
5140256 PWM signal demodulation method and apparatus Aug. 18, 1992
5138320 Skew code generator for measuring pulses width using a delay line Aug. 11, 1992
4724425 Security and alarm system Feb. 9, 1988
4617677 Data signal reading device Oct. 14, 1986

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