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Class Information
Number: 329/307
Name: Demodulators > Phase shift keying or quadrature amplitude demodulator > Input signal combined with local oscillator or carrier frequency signal > Including phase or frequency locked loop
Description: Subject matter in which a phase or frequency locked loop provides stability to or synchronization with the secondary source of oscillations.
Sub-classes under this class:
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 |
| 7342986 |
Digital PLL device |
Mar. 11, 2008 |
| 7336732 |
Carrier frequency detection for signal acquisition |
Feb. 26, 2008 |
| 7277502 |
Carrier recovery apparatus |
Oct. 2, 2007 |
| 7263139 |
Phase correction for a phase modulated signal with mutually interfering symbols |
Aug. 28, 2007 |
| 7248664 |
Timesliced discrete-time phase locked loop |
Jul. 24, 2007 |
| 7233632 |
Symbol timing correction for a phase modulated signal with mutually interfering symbols |
Jun. 19, 2007 |
| 7187727 |
Clock and data recovery circuit and clock control method |
Mar. 6, 2007 |
| RE38876 |
System for, and method of, processing quadrature amplitude modulated signals |
Nov. 15, 2005 |
| 6940923 |
Demodulating device, broadcasting system, and semiconductor device |
Sep. 6, 2005 |
| 6937684 |
Phase discriminator with a phase compensation circuit |
Aug. 30, 2005 |
| 6861900 |
Fast timing acquisition for multiple radio terminals |
Mar. 1, 2005 |
| 6781447 |
Multi-pass phase tracking loop with rewind of current waveform in digital communication systems |
Aug. 24, 2004 |
| 6731698 |
Quadrature demodulation circuit capable for canceling offset |
May. 4, 2004 |
| 6727772 |
Method and system for synchronizing a quadrature amplitude modulation demodulator |
Apr. 27, 2004 |
| 6717462 |
QPSK and 16 QAM self-generating synchronous direct downconversion demodulator |
Apr. 6, 2004 |
| 6683493 |
Timing reproducing device and demodulator |
Jan. 27, 2004 |
| 6671342 |
Phase detectors in carrier recovery for offset QAM and VSB |
Dec. 30, 2003 |
| 6614841 |
Signal processing apparatus |
Sep. 2, 2003 |
| 6522703 |
Estimating frequency offset to demodulate a packet of phase-modulated symbols |
Feb. 18, 2003 |
| 6493409 |
Phase detectors in carrier recovery for offset QAM and VSB |
Dec. 10, 2002 |
| 6433630 |
Phase shifter, and demodulator employing it |
Aug. 13, 2002 |
| 6415004 |
Phase detector, timing recovery device using the same, and a demodulator using the timing recovery device |
Jul. 2, 2002 |
| 6411658 |
Demodulation device |
Jun. 25, 2002 |
| 6408036 |
Detection circuits |
Jun. 18, 2002 |
| 6363124 |
Phase-noise compensated digital communication receiver and method therefor |
Mar. 26, 2002 |
| 6356599 |
AFC device and method of controlling reception frequency in a dual-mode terminal |
Mar. 12, 2002 |
| 6310927 |
First order tuning circuit for a phase-locked loop |
Oct. 30, 2001 |
| 6307898 |
Phase error detector |
Oct. 23, 2001 |
| 6285721 |
Method for assisting simple synchronization to the carrier of a dispersed-energy QPSK signal |
Sep. 4, 2001 |
| 6282249 |
Satellite receiver |
Aug. 28, 2001 |
| 6278746 |
Timing recovery loop circuit in a receiver of a modem |
Aug. 21, 2001 |
| 6201447 |
Phase synchronization circuit with units for setting sweep frequency and control voltage |
Mar. 13, 2001 |
| 6195400 |
Two-mode demodulating apparatus |
Feb. 27, 2001 |
| 6181750 |
Apparatus for estimating the frequency difference existing between the carrier frequency of a digital signal and the frequency of a receiver local oscillator |
Jan. 30, 2001 |
| 6163276 |
System for remote data collection |
Dec. 19, 2000 |
| 6163208 |
One bit digital phase shift keyed carrier recovery and demodulator circuit |
Dec. 19, 2000 |
| 6154512 |
Digital phase lock loop with control for enabling and disabling synchronization |
Nov. 28, 2000 |
| 6151368 |
Phase-noise compensated digital communication receiver and method therefor |
Nov. 21, 2000 |
| 6147560 |
Method and device relating to supervision and control of an oscillator signal |
Nov. 14, 2000 |
| 6140869 |
Device for demodulating a binary phase-shift keyed signal |
Oct. 31, 2000 |
| 6127884 |
Differentiate and multiply based timing recovery in a quadrature demodulator |
Oct. 3, 2000 |
| 6115432 |
High-frequency signal receiving apparatus |
Sep. 5, 2000 |
| 6104237 |
Method for estimating phase in demodulator |
Aug. 15, 2000 |
| 6081572 |
Lock-in aid frequency detector |
Jun. 27, 2000 |
| 6075408 |
OQPSK phase and timing detection |
Jun. 13, 2000 |
| 6031428 |
Steered frequency phase locked loop |
Feb. 29, 2000 |
| 6009126 |
Zero-IF receiver |
Dec. 28, 1999 |
| 6008692 |
Carrier wave synchronization for multi-level two-dimensional modulation alphabets |
Dec. 28, 1999 |
| 5982200 |
Costas loop carrier recovery circuit using square-law circuits |
Nov. 9, 1999 |
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