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Class Information
Number: 329/325
Name: Demodulators > Frequency modulation 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 the secondary source of oscillations.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7598803 |
Combined phase-locked loop and amplitude-locked loop module for switching FM signals |
Oct. 6, 2009 |
| 7587011 |
Digital-data receiver synchronization method and apparatus |
Sep. 8, 2009 |
| 7535976 |
Apparatus and method for integration of tuner functions in a digital receiver |
May. 19, 2009 |
| 7457375 |
Timing extractor, timing extraction method, and demodulator having the timing extractor |
Nov. 25, 2008 |
| 7443930 |
Complex digital phase locked loop for use in a demodulator and method of optimal coefficient selection |
Oct. 28, 2008 |
| 7420409 |
Phase locked loop demodulator with gain control |
Sep. 2, 2008 |
| 7421053 |
Fast clock acquisition enable method using phase stir injection to PLL for burst mode optical receivers |
Sep. 2, 2008 |
| 7408418 |
Phase locked loop circuit having reduced lock time |
Aug. 5, 2008 |
| 7339809 |
Systems and methods for electrical power regulation and distribution in aircraft |
Mar. 4, 2008 |
| 7187727 |
Clock and data recovery circuit and clock control method |
Mar. 6, 2007 |
| 7138857 |
Signal processing device for mobile radio |
Nov. 21, 2006 |
| 7071773 |
Digital phase locked loop |
Jul. 4, 2006 |
| 6809585 |
Frequency modulation system and method |
Oct. 26, 2004 |
| 6765435 |
Phase locked loop demodulator and demodulation method using feed-forward tracking error compensation |
Jul. 20, 2004 |
| 6757336 |
Device and method for performing a carrier recovery |
Jun. 29, 2004 |
| 6731698 |
Quadrature demodulation circuit capable for canceling offset |
May. 4, 2004 |
| 6646500 |
Integrated circuit having an FM demodulator and method therefor |
Nov. 11, 2003 |
| 6614841 |
Signal processing apparatus |
Sep. 2, 2003 |
| 6590950 |
Bandwidth stabilized PLL |
Jul. 8, 2003 |
| 6466086 |
Quadrature demodulator with phase-locked loop |
Oct. 15, 2002 |
| 6433837 |
Demodulator, particularly for a SECAM chrominance signal, with double frequency adjustment |
Aug. 13, 2002 |
| 6421530 |
Radio circuit having a local oscillator frequency which differs from the transmit frequency or the receive frequency and mobile radio apparatus |
Jul. 16, 2002 |
| 6411660 |
Device for reducing lock-up time of Frequency synthesizer |
Jun. 25, 2002 |
| 6381291 |
Phase detector and method |
Apr. 30, 2002 |
| 6359949 |
Demodulation circuit, a decode circuit and a digital PLL circuit for an optical disc apparatus |
Mar. 19, 2002 |
| 6356599 |
AFC device and method of controlling reception frequency in a dual-mode terminal |
Mar. 12, 2002 |
| 6259315 |
FM demodulator being tuned to reference frequency by auxiliary detector |
Jul. 10, 2001 |
| 6246738 |
Phase modulated reduction of clock wander in synchronous wide area networks |
Jun. 12, 2001 |
| 6160860 |
Phase-locked loop (PLL) circuit containing a frequency detector for improved frequency acquisition |
Dec. 12, 2000 |
| 6160444 |
Demodulation of FM audio carrier |
Dec. 12, 2000 |
| 6130925 |
Frequency synthesizer |
Oct. 10, 2000 |
| 6128357 |
Data receiver having variable rate symbol timing recovery with non-synchronized sampling |
Oct. 3, 2000 |
| 6104238 |
FM demodulator including tuning of a filter and detector |
Aug. 15, 2000 |
| 6094102 |
Frequency synthesizer using micro electro mechanical systems (MEMS) technology and method |
Jul. 25, 2000 |
| 6081572 |
Lock-in aid frequency detector |
Jun. 27, 2000 |
| 6031428 |
Steered frequency phase locked loop |
Feb. 29, 2000 |
| 6008693 |
FM-sound demodulator for TV sound signals and method of detecting sound carriers |
Dec. 28, 1999 |
| 5966400 |
Receiver |
Oct. 12, 1999 |
| 5949281 |
Self aligning PLL demodulator |
Sep. 7, 1999 |
| 5939951 |
Methods and apparatus for modulating, demodulating and amplifying |
Aug. 17, 1999 |
| 5937020 |
Digital information signal reproducing circuit and digital information system |
Aug. 10, 1999 |
| 5929716 |
High performance voltage controlled oscillator that is cost efficient |
Jul. 27, 1999 |
| 5828266 |
Apparatus and methods for setting up a tuning frequency of a PLL demodulator that compensates for dispersion and aging effects of an associated ceramic resonator frequency reference |
Oct. 27, 1998 |
| 5789987 |
Low-noise frequency synthesizer |
Aug. 4, 1998 |
| 5786726 |
Device of the phase-locked loop type for demodulating a frequency-modulated signal |
Jul. 28, 1998 |
| 5781065 |
Circuit for causing FPLL to lock in desired phase |
Jul. 14, 1998 |
| 5719527 |
Method and apparatus for amplifying, modulating and demodulating |
Feb. 17, 1998 |
| 5697086 |
Co-channel FM signal/interference canceller |
Dec. 9, 1997 |
| 5691666 |
Full threshold FM deviation compression feedback demodulator and method |
Nov. 25, 1997 |
| 5686862 |
FM demodulator integrated on semiconductor chip without discrete circuit components |
Nov. 11, 1997 |
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