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Class Information
Number: 329/347
Name: Demodulators > Amplitude modulation demodulator
Description: Subject matter where the demodulator extracts the modulating signal from an input AM signal.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7446695 |
Precision pulse detection system for radar sensors |
Nov. 4, 2008 |
| 7439800 |
Amplitude demodulator for an electromagnetic transponder |
Oct. 21, 2008 |
| 7397301 |
Pyroelectric demodulating detector |
Jul. 8, 2008 |
| 7307472 |
Digital demodulator with a low sampling frequency |
Dec. 11, 2007 |
| 7302011 |
Quadrature frequency doubling system |
Nov. 27, 2007 |
| 7292093 |
Envelope detector with DC level shifting |
Nov. 6, 2007 |
| 7265610 |
Error detection in a signal in amplitude modulation |
Sep. 4, 2007 |
| 7215723 |
Demodulator for an amplitude-modulated alternating signal |
May. 8, 2007 |
| 7106188 |
Method and system for providing an activation signal based on a received RF signal |
Sep. 12, 2006 |
| 7003680 |
Contactless apparatus and card-type device having clock rectifier that is independent of power rectifier and demodulator with RC time constant based on selectable resistor |
Feb. 21, 2006 |
| 6985540 |
AM demodulator |
Jan. 10, 2006 |
| 6975165 |
Method and system for the conversion of phase shift keying signals (PSK) into amplitude shift keying signals (ASK) |
Dec. 13, 2005 |
| 6907088 |
Contactless IC card for preventing incorrect data recovery in demodulation of an amplitude-modulated carrier wave |
Jun. 14, 2005 |
| 6897719 |
Demodulation circuit and demodulation method |
May. 24, 2005 |
| 6861901 |
Voltage follower circuit |
Mar. 1, 2005 |
| 6828853 |
Wide dynamic range demodulator for smart cards or contactless tickets |
Dec. 7, 2004 |
| 6803815 |
Amplitude modulation demodulation circuit |
Oct. 12, 2004 |
| 6784730 |
Contactless IC card system |
Aug. 31, 2004 |
| 6744309 |
Absolute value amplitude baseband detector |
Jun. 1, 2004 |
| 6727985 |
System and method for signal acquisition in a distance meter |
Apr. 27, 2004 |
| 6586988 |
Demodulating circuits for contactless integrated circuit cards and systems |
Jul. 1, 2003 |
| 6577182 |
Device for demodulating an amplitude-modulated signal |
Jun. 10, 2003 |
| 6574287 |
Frequency/Phase comparison circuit with gated reference and signal inputs |
Jun. 3, 2003 |
| 6496549 |
Method and apparatus for demodulating amplitude-shift keyed data signals |
Dec. 17, 2002 |
| 6426716 |
Modulated pulse doppler sensor |
Jul. 30, 2002 |
| 6407629 |
Sample and hold demodulator circuit |
Jun. 18, 2002 |
| 6366164 |
Integrated circuit layout for LF - signal acquisition in the case of contactless data transmission |
Apr. 2, 2002 |
| 6323728 |
Data carrier for the contactless reception of amplitude-modulated signals |
Nov. 27, 2001 |
| 6256358 |
Digital signal processing architecture for multi-band radio receiver |
Jul. 3, 2001 |
| 6169585 |
Circuit arrangement for demodulating an intermediate-frequency video signal |
Jan. 2, 2001 |
| 6094462 |
Data demodulator and data demodulating method |
Jul. 25, 2000 |
| 6078627 |
Circuit and method for multilevel signal decoding, descrambling, and error detection |
Jun. 20, 2000 |
| 5936462 |
AM demodulator using limiter amplifier RSSI output as baseband signal |
Aug. 10, 1999 |
| 5915028 |
Amplitude demodulator |
Jun. 22, 1999 |
| 5809065 |
Method and apparatus for improving the quality of AM compatible digital broadcast system signals in the presence of distortion |
Sep. 15, 1998 |
| 5614862 |
Digital demodulator for a frequency modulated signal and an amplitude modulated signal |
Mar. 25, 1997 |
| 5563550 |
Recovery of data from amplitude modulated signals with self-coherent demodulation |
Oct. 8, 1996 |
| 5561716 |
Demodulator |
Oct. 1, 1996 |
| 5469113 |
Rectifier and integrator circuit for disk drive servo system |
Nov. 21, 1995 |
| 5450444 |
Digital AM transmitter |
Sep. 12, 1995 |
| 5369375 |
Sinewave generating circuit and amplitude demodulator |
Nov. 29, 1994 |
| 5214708 |
Speech information extractor |
May. 25, 1993 |
| 5121072 |
Digital demodulator for amplitude or angle modulation using truncated nonlinear power series approximations |
Jun. 9, 1992 |
| 5097222 |
Digital analog signal demodulator |
Mar. 17, 1992 |
| 5073898 |
Communication device |
Dec. 17, 1991 |
| 5029271 |
Superregenerative detector |
Jul. 2, 1991 |
| 4975654 |
Data signal discrimination method and apparatus |
Dec. 4, 1990 |
| 4947407 |
Sample-and-hold digital phase-locked loop for ask signals |
Aug. 7, 1990 |
| 4885546 |
Digital demodulator for AM or FM |
Dec. 5, 1989 |
| 4864591 |
Facsimile signal modulation detector |
Sep. 5, 1989 |
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