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Class Information
Number: 329/360
Name: Demodulators > Amplitude modulation demodulator > Input signal combined with local oscillator or carrier frequency signal (e.g., synchronous demodulator) > Including phase or frequency locked loop
Description: Subject matter in which frequency stability is provided to the secondary source of oscillations by a phase or frequency locked loop.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7457375 |
Timing extractor, timing extraction method, and demodulator having the timing extractor |
Nov. 25, 2008 |
| 7436252 |
Performing a coordinate rotation digital computer (CORDIC) operation for amplitude modulation (AM) demodulation |
Oct. 14, 2008 |
| 7342986 |
Digital PLL device |
Mar. 11, 2008 |
| 7187727 |
Clock and data recovery circuit and clock control method |
Mar. 6, 2007 |
| 6933777 |
AM detecting apparatus with overmodulation detecting function |
Aug. 23, 2005 |
| 6803815 |
Amplitude modulation demodulation circuit |
Oct. 12, 2004 |
| 6757336 |
Device and method for performing a carrier recovery |
Jun. 29, 2004 |
| 6614841 |
Signal processing apparatus |
Sep. 2, 2003 |
| 6356599 |
AFC device and method of controlling reception frequency in a dual-mode terminal |
Mar. 12, 2002 |
| 6169585 |
Circuit arrangement for demodulating an intermediate-frequency video signal |
Jan. 2, 2001 |
| 6128357 |
Data receiver having variable rate symbol timing recovery with non-synchronized sampling |
Oct. 3, 2000 |
| 6081572 |
Lock-in aid frequency detector |
Jun. 27, 2000 |
| 6031428 |
Steered frequency phase locked loop |
Feb. 29, 2000 |
| 5966400 |
Receiver |
Oct. 12, 1999 |
| 5719527 |
Method and apparatus for amplifying, modulating and demodulating |
Feb. 17, 1998 |
| 5675284 |
Frequency lock indicator for FPLL demodulated signal having a pilot |
Oct. 7, 1997 |
| 5675283 |
Pilot recovery and polarity detection system |
Oct. 7, 1997 |
| 5668498 |
Controlling FPLL polarity using pilot signal and polarity inverter |
Sep. 16, 1997 |
| 5627604 |
Stabilizing the lock up of a bi-phase stable FPLL by augmenting a recovered DC pilot |
May. 6, 1997 |
| 5600680 |
High frequency receiving apparatus |
Feb. 4, 1997 |
| 5596606 |
Synchronous detector and methods for synchronous detection |
Jan. 21, 1997 |
| 5561403 |
Oscillator and modulator arrangements on a circuit board |
Oct. 1, 1996 |
| 5548243 |
Demodulator for demodulating a single side band signal, a real zero single side band signal and a frequency modulated signal, and a carrier signal reproducing circuit for the demodulator |
Aug. 20, 1996 |
| 5483555 |
Phase adjusting circuit for a demodulator |
Jan. 9, 1996 |
| 5481227 |
Oscillator, synthesizer tuner circuit and AM synchronous detect circuit employing the oscillator |
Jan. 2, 1996 |
| 5479458 |
Digital phase shifter including 1/N for phase detect and subsequent VCO adjust |
Dec. 26, 1995 |
| 5459432 |
Use of a chopper and a sigma-delta modulator for downconverting and digitizing an analog signal including information modulated by a carrier |
Oct. 17, 1995 |
| 5455536 |
Demodulator circuit and demodulating method employing bit error rate monitor |
Oct. 3, 1995 |
| 5341431 |
AM stereo detection and audio processing apparatus |
Aug. 23, 1994 |
| 5315618 |
Apparatus and method of canceling periodic carrier phase jitter |
May. 24, 1994 |
| 5283532 |
Receiver having a local oscillator first synchronized to a reference frequency and then to a received signal |
Feb. 1, 1994 |
| 5241687 |
Phase controlling phase of local subcarrier signal to correspond to transmitted pilot signal |
Aug. 31, 1993 |
| 5157343 |
Electronic arrangement for receiving a modulated carrier signal |
Oct. 20, 1992 |
| 5150384 |
Carrier recovery method and apparatus having an adjustable response time determined by carrier signal parameters |
Sep. 22, 1992 |
| 5077542 |
Transmission system with suppressed carrier signal amplitude modulation preserving the polarity of the transmitted signal, and corresponding transmitter and receiver |
Dec. 31, 1991 |
| 5036289 |
Method and apparatus for synchronously demodulating detector output of a radiometer |
Jul. 30, 1991 |
| 4972163 |
Regenerating device having a phase-locked loop with loop gain compensation and offset compensation |
Nov. 20, 1990 |
| 4943982 |
Baseband carrier phase corrector |
Jul. 24, 1990 |
| 4937841 |
Method and circuitry for carrier recovery for time division multiple access radio systems |
Jun. 26, 1990 |
| 4654601 |
Demodulator for television signals with feedback to correlate frames or lines |
Mar. 31, 1987 |
| 4633187 |
AM synchronous detecting circuit |
Dec. 30, 1986 |
| 4631499 |
Phase-locked loop for a directly mixing synchronous AM-receiver |
Dec. 23, 1986 |
| 4631487 |
Phase lock loop television signal demodulator |
Dec. 23, 1986 |
| 4628270 |
Frequency-agile synchronous demodulator |
Dec. 9, 1986 |
| 4599743 |
Baseband demodulator for FM and/or AM signals |
Jul. 8, 1986 |
| 4577157 |
Zero IF receiver AM/FM/PM demodulator using sampling techniques |
Mar. 18, 1986 |
| 4525686 |
Phase-locked loop circuit with variable bandwidth filter |
Jun. 25, 1985 |
| 4517531 |
Carrier wave reproducing circuit in synchronized detection system of medium speed facsimile |
May. 14, 1985 |
| 4485487 |
Method of, and a receiver for, demodulating a double sideband amplitude modulated signal in a quasi-synchronous area coverage scheme utilizing sideband diversity |
Nov. 27, 1984 |
| 4482869 |
PLL Detection circuit having dual bandwidth loop filter |
Nov. 13, 1984 |
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