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Class Information
Number: 375/320
Name: Pulse or digital communications > Receivers > Amplitude modulation
Description: Subject matter wherein the receiver extracts a modulating signal from an input AM signal whose amplitude of a carrier varies over a continuum of values in accordance with the modulating signal.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7613253 |
Noise balanced QAM detection |
Nov. 3, 2009 |
| 7609783 |
Amplitude shift keying (ASK) demodulation circuit based on a self sample as a basis application in an organism implantation microsystem |
Oct. 27, 2009 |
| 7593695 |
RF transceiver incorporating dual-use PLL frequency synthesizer |
Sep. 22, 2009 |
| 7583694 |
Data definition apparatus, systems, and methods |
Sep. 1, 2009 |
| 7583757 |
Joint symbol, amplitude, and rate estimator |
Sep. 1, 2009 |
| 7580673 |
Leader-follower power control |
Aug. 25, 2009 |
| 7577208 |
VSB transmission system |
Aug. 18, 2009 |
| 7555062 |
Method and device for delay-sensitive measurement of a signal |
Jun. 30, 2009 |
| 7545892 |
Method and circuit for controlling the input signal for a contactless transponder |
Jun. 9, 2009 |
| 7535291 |
AM demodulator |
May. 19, 2009 |
| 7502426 |
Method for estimating signal magnitude, noise power, and signal-to-noise ratio of received signals |
Mar. 10, 2009 |
| 7492835 |
Synchrodyning apparatus |
Feb. 17, 2009 |
| 7474713 |
System and method for demodulating multiple QAM signals |
Jan. 6, 2009 |
| 7466747 |
Method and apparatus for wireless data transfer |
Dec. 16, 2008 |
| 7463703 |
Joint symbol, amplitude, and rate estimator |
Dec. 9, 2008 |
| 7450666 |
Ask demodulation device and wireless device using the same |
Nov. 11, 2008 |
| 7446695 |
Precision pulse detection system for radar sensors |
Nov. 4, 2008 |
| 7444128 |
Method of estimating a high frequency carrier signal |
Oct. 28, 2008 |
| 7426243 |
Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers |
Sep. 16, 2008 |
| 7423987 |
Feeder link configurations to support layered modulation for digital signals |
Sep. 9, 2008 |
| 7417496 |
Demodulator circuit of RFID system |
Aug. 26, 2008 |
| 7363648 |
Cable modem tuner |
Apr. 22, 2008 |
| 7349493 |
Demodulation with separate branches for phase and amplitude |
Mar. 25, 2008 |
| 7340010 |
Forward error correction coding for hybrid AM in-band on-channel digital audio broadcasting systems |
Mar. 4, 2008 |
| 7340012 |
Single and multiple sinewave modulation and demodulation techniques employing carrier-zero and carrier-peak data-word start and stop |
Mar. 4, 2008 |
| 7308046 |
System and method for detecting presence of digitally modulated waveform |
Dec. 11, 2007 |
| 7221718 |
I/Q demodulator and I/Q signal sampling method thereof |
May. 22, 2007 |
| 7218642 |
Methods and systems for high speed broadband digital link |
May. 15, 2007 |
| 7173981 |
Dual layer signal processing in a layered modulation digital signal system |
Feb. 6, 2007 |
| 7164901 |
DC offset-free RF front-end circuits and systems for direct conversion receivers |
Jan. 16, 2007 |
| 7162000 |
Delay locked loop synthesizer with multiple outputs and digital modulation |
Jan. 9, 2007 |
| 7149259 |
Center of gravity control for hierarchical QAM transmission systems |
Dec. 12, 2006 |
| 7120202 |
Wireless communication apparatus |
Oct. 10, 2006 |
| 7102498 |
Remote keyless entry system with two modes of demodulation |
Sep. 5, 2006 |
| 7092456 |
Process for synchronization |
Aug. 15, 2006 |
| 7092465 |
Method and apparatus for processing an amplitude modulated (AM) signal |
Aug. 15, 2006 |
| 7016425 |
Quasi-differential modulation/demodulation method for multi-amplitude digital modulated signals and OFDM system |
Mar. 21, 2006 |
| 7016659 |
Amplitude modulation with time- and spectrum-shared sidebands |
Mar. 21, 2006 |
| 6999536 |
System for phase error estimation for a quadrature modulator |
Feb. 14, 2006 |
| 6987434 |
Non-radiative dielectric waveguide modulator having waveguide type hybrid coupler |
Jan. 17, 2006 |
| 6985540 |
AM demodulator |
Jan. 10, 2006 |
| 6980774 |
Radio frequency integrated circuit |
Dec. 27, 2005 |
| 6963697 |
Increased transmission capacity for a fiber-optic link |
Nov. 8, 2005 |
| 6917787 |
System and method for superheterodyne frequency multiplication signal expansion to achieve a reduced bandwidth frequency or phase modulation communication channel |
Jul. 12, 2005 |
| 6907088 |
Contactless IC card for preventing incorrect data recovery in demodulation of an amplitude-modulated carrier wave |
Jun. 14, 2005 |
| 6879626 |
Transmission/reception apparatus and modulation system estimation method |
Apr. 12, 2005 |
| 6861901 |
Voltage follower circuit |
Mar. 1, 2005 |
| 6823025 |
Amplitude modulation detector |
Nov. 23, 2004 |
| 6809584 |
Signal transmission and receiving methods optimized for integrated circuit implementation |
Oct. 26, 2004 |
| 6803815 |
Amplitude modulation demodulation circuit |
Oct. 12, 2004 |
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