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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 |
| 6809584 |
Signal transmission and receiving methods optimized for integrated circuit implementation |
Oct. 26, 2004 |
| 6803815 |
Amplitude modulation demodulation circuit |
Oct. 12, 2004 |
| 6748028 |
Digital AM demodulator, particularly for demodulating TV signals |
Jun. 8, 2004 |
| 6744827 |
Demodulator arrangement, method to demodulate, and telecommunication system comprising such a demodulator arrangement |
Jun. 1, 2004 |
| 6744309 |
Absolute value amplitude baseband detector |
Jun. 1, 2004 |
| 6680985 |
Adaptive quadrature amplitude modulation decoding system |
Jan. 20, 2004 |
| 6661849 |
Multiple payload slicer system with prenormalization integer values |
Dec. 9, 2003 |
| 6650875 |
Transmitter architecture having a secondary phase-error correction loop including an amplitude reconstruction system |
Nov. 18, 2003 |
| 6643471 |
Increased transmission capacity for a fiber-optic link |
Nov. 4, 2003 |
| 6639459 |
Demodulator using digital circuitry |
Oct. 28, 2003 |
| 6603821 |
Wireless communication terminal capable of correctly specifying position of burst and having small frequency error of recovered carrier |
Aug. 5, 2003 |
| 6574287 |
Frequency/Phase comparison circuit with gated reference and signal inputs |
Jun. 3, 2003 |
| 6546055 |
Carrier offset determination for RF signals having a cyclic prefix |
Apr. 8, 2003 |
| 6496549 |
Method and apparatus for demodulating amplitude-shift keyed data signals |
Dec. 17, 2002 |
| 6483381 |
Signal transmission and receiving methods optimized for integrated circuit implementation |
Nov. 19, 2002 |
| 6480536 |
Method and apparatus for demodulating and equalizing an AM compatible digital audio broadcast signal |
Nov. 12, 2002 |
| 6452977 |
Method and apparatus for AM compatible digital broadcasting |
Sep. 17, 2002 |
| 6426981 |
Process and device for decoding a radio frequency transmission channel, especially for a terrestrial digital broadcast using OFDM modulation |
Jul. 30, 2002 |
| 6418300 |
Method and device for transmitting mixed analog and digital signals by the same transmitter |
Jul. 9, 2002 |
| 6356594 |
Data converter |
Mar. 12, 2002 |
| 6323728 |
Data carrier for the contactless reception of amplitude-modulated signals |
Nov. 27, 2001 |
| 6314141 |
Method for receiving-end automatic identification of a signal at the receiving end, the signal having been transmitted in accordance with the QAM mode, and circuit for carrying out the method |
Nov. 6, 2001 |
| 6301295 |
AM modulated wave eliminating circuit |
Oct. 9, 2001 |
| 6295317 |
Method and apparatus for demodulating and equalizing an AM compatible digital audio broadcast signal |
Sep. 25, 2001 |
| 6292511 |
Method for equalization of complementary carriers in an AM compatible digital audio broadcast system |
Sep. 18, 2001 |
| 6285719 |
Digital phase sensitive rectification of AC driven transducer signals |
Sep. 4, 2001 |
| 6255901 |
Demodulator for ask-modulated signals having small modulation depth |
Jul. 3, 2001 |
| 6208217 |
Ask modulator with frequency dependent voltage divider |
Mar. 27, 2001 |
| 6163570 |
Methods and apparatus for verifying transmit power levels in a signal point limited transmission system |
Dec. 19, 2000 |
| 6160856 |
System for providing amplitude and phase modulation of line signals using delay lines |
Dec. 12, 2000 |
| 6023614 |
Method for decoding a suppressed-carrier modulated signal in the presence of a pilot tone, particularly for FM signals |
Feb. 8, 2000 |
| 5970046 |
Apparatus for demodulating AM data multiplexed modulated wave signal |
Oct. 19, 1999 |
| 5956374 |
Jitter suppressing circuit |
Sep. 21, 1999 |
| 5949826 |
Data transmission and reception system |
Sep. 7, 1999 |
| 5940447 |
Wireless powered communication device using power signal sampling and method |
Aug. 17, 1999 |
| 5936462 |
AM demodulator using limiter amplifier RSSI output as baseband signal |
Aug. 10, 1999 |
| 5905761 |
Amplitude shift keyed receiver |
May. 18, 1999 |
| 5898732 |
Data service channel provision for an AM compatible broadcast system |
Apr. 27, 1999 |
| 5825241 |
Differential demodulator |
Oct. 20, 1998 |
| 5815035 |
Demodulating circuit, demodulating apparatus, demodulating method, and modulating/demodulating system of acoustic signals |
Sep. 29, 1998 |
| 5809085 |
Apparatus and method for detecting and discriminating various signal types in the presence of impulse distortions |
Sep. 15, 1998 |
| 5787116 |
Apparatus and method for detecting amplitude modulated answer back toned signals |
Jul. 28, 1998 |
| 5774502 |
Fully integrated data receiver and method for receiving on/off keyed AM/PDSK modulated signals |
Jun. 30, 1998 |
| 5652768 |
Method of and circuit arrangement for demodulating a digital amplitude-modulated carrier signal |
Jul. 29, 1997 |
| 5606576 |
Adaptive mode control system for AM compatible digital broadcast |
Feb. 25, 1997 |
| 5602868 |
Multiple-modulation communication system |
Feb. 11, 1997 |
| 5532641 |
ASK demodulator implemented with digital bandpass filter |
Jul. 2, 1996 |
| 5446771 |
Adaptive coherent signal detection method and apparatus |
Aug. 29, 1995 |
| 5233634 |
Automatic gain control circuit in a radio telephone receiver |
Aug. 3, 1993 |
| 5233635 |
Receiving method and receiver for discrete signals |
Aug. 3, 1993 |
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