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Class Information
Number: 331/DIG.2
Name: Oscillators > Phase locked loop having lock indicating or detecting means
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7595698 |
PLL lock time reduction |
Sep. 29, 2009 |
| 7545222 |
Phase lock loop for rapid lock-in and method therefor |
Jun. 9, 2009 |
| 7495517 |
Techniques for dynamically adjusting the frequency range of phase-locked loops |
Feb. 24, 2009 |
| 7486146 |
Loop system capable of auto-calibrating oscillating frequency range and related method |
Feb. 3, 2009 |
| 7471158 |
Automatic switching phase-locked loop |
Dec. 30, 2008 |
| 7471159 |
Phase-locked loop for stably adjusting frequency-band of voltage-controlled oscillator and phase locking method |
Dec. 30, 2008 |
| 7443247 |
Circuit arrangement for detection of a locking condition for a phase locked loop, and a method |
Oct. 28, 2008 |
| 7439812 |
Auto-ranging phase-locked loop |
Oct. 21, 2008 |
| 7423492 |
Circuit to reset a phase locked loop after a loss of lock |
Sep. 9, 2008 |
| 7408419 |
Sigma-delta fractional-N PLL with reduced frequency error |
Aug. 5, 2008 |
| 7388441 |
Robust phase-lock detector |
Jun. 17, 2008 |
| 7372339 |
Phase lock loop indicator |
May. 13, 2008 |
| 7369002 |
Phase locked loop fast lock method |
May. 6, 2008 |
| 7355490 |
Receiver having no tracking error |
Apr. 8, 2008 |
| 7323946 |
Lock detect circuit for a phase locked loop |
Jan. 29, 2008 |
| 7323940 |
Adaptive cycle-slipped detector for unlock detection in phase-locked loop applications |
Jan. 29, 2008 |
| 7317359 |
Circuits and methods for phase locked loop lock window detection |
Jan. 8, 2008 |
| 7301406 |
Method and system for calibrating input voltage of voltage controlled oscillator and digital interface used for calibrating input voltage |
Nov. 27, 2007 |
| 7268629 |
System and method for lock detection of a phase-locked loop circuit |
Sep. 11, 2007 |
| 7265634 |
System and method for phase-locked loop initialization |
Sep. 4, 2007 |
| 7257183 |
Digital clock recovery circuit |
Aug. 14, 2007 |
| 7248121 |
Variable lock-in circuit for phase-locked loops |
Jul. 24, 2007 |
| 7242254 |
Adjustable lock-in circuit for phase-locked loops |
Jul. 10, 2007 |
| 7224233 |
Smart lock-in circuit for phase-locked loops |
May. 29, 2007 |
| 7215209 |
Controllable idle time current mirror circuit for switching regulators, phase-locked loops, and delay-locked loops |
May. 8, 2007 |
| 7205852 |
Method and apparatus for acquiring a frequency without a reference clock |
Apr. 17, 2007 |
| 7183861 |
Circuits and methods for detecting phase lock |
Feb. 27, 2007 |
| 7183863 |
Self-initializing frequency detector |
Feb. 27, 2007 |
| 7180377 |
Method and apparatus for a hybrid phase lock loop frequency synthesizer |
Feb. 20, 2007 |
| 7176763 |
Phase-locked loop integrated circuits having fast phase locking characteristics |
Feb. 13, 2007 |
| 7157978 |
Method and system for a lock detector for a phase-locked loop |
Jan. 2, 2007 |
| 7154344 |
Versatile feedback system for phase locked loop architecture |
Dec. 26, 2006 |
| 7151413 |
Low noise charge pump for PLL-based frequence synthesis |
Dec. 19, 2006 |
| 7109764 |
PLL clock signal generation circuit |
Sep. 19, 2006 |
| 7102446 |
Phase lock loop with coarse control loop having frequency lock detector and device including same |
Sep. 5, 2006 |
| 7103130 |
Phase-locked loop circuit |
Sep. 5, 2006 |
| 7084709 |
Hybrid analog/digital phase lock loop frequency synthesizer |
Aug. 1, 2006 |
| 7082178 |
Lock detector circuit for dejitter phase lock loop (PLL) |
Jul. 25, 2006 |
| 7046093 |
Dynamic phase-locked loop circuits and methods of operation thereof |
May. 16, 2006 |
| 7015725 |
Delay-locked loop device capable of anti-false-locking |
Mar. 21, 2006 |
| 6990165 |
Phase and frequency lock detector |
Jan. 24, 2006 |
| 6982604 |
CDR lock detector with hysteresis |
Jan. 3, 2006 |
| 6977537 |
Low gain phase-locked loop circuit |
Dec. 20, 2005 |
| 6970047 |
Programmable lock detector and corrector |
Nov. 29, 2005 |
| 6963234 |
Phase regulating circuit with a time-delay element |
Nov. 8, 2005 |
| 6956441 |
Phase locked state detecting apparatus and image processing apparatus |
Oct. 18, 2005 |
| 6954091 |
Programmable phase-locked loop |
Oct. 11, 2005 |
| 6940356 |
Circuitry to reduce PLL lock acquisition time |
Sep. 6, 2005 |
| 6930559 |
Oscillation state discrimination circuit and oscillation control circuit adapted to oscillation circuit |
Aug. 16, 2005 |
| 6927635 |
Lock detectors having a narrow sensitivity range |
Aug. 9, 2005 |
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