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Class Information
Number: 331/25
Name: Oscillators > Automatic frequency stabilization using a phase or frequency sensing means > With reference oscillator or source > Signal or phase comparator
Description: Subject matter wherein a particular or significant signal or phase comparing network is utilized in the A.F.S. loop of the controlled oscillator.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7453958 |
Method and device for extracting a clock frequency underlying a data stream |
Nov. 18, 2008 |
| 7449962 |
Phase-controlled current source for phase-locked loop |
Nov. 11, 2008 |
| 7443251 |
Digital phase and frequency detector |
Oct. 28, 2008 |
| 7443250 |
Programmable phase-locked loop responsive to a selected bandwidth and a selected reference clock signal frequency to adjust circuit characteristics |
Oct. 28, 2008 |
| 7440518 |
Phase-locked loop circuit |
Oct. 21, 2008 |
| 7439812 |
Auto-ranging phase-locked loop |
Oct. 21, 2008 |
| 7436265 |
Clock generator and clock generating method using delay locked loop |
Oct. 14, 2008 |
| 7436263 |
Apparatus and method for presenting a modulated output signal at an output locus |
Oct. 14, 2008 |
| 7432751 |
High performance signal generation |
Oct. 7, 2008 |
| 7423492 |
Circuit to reset a phase locked loop after a loss of lock |
Sep. 9, 2008 |
| 7409029 |
Transmission device for automatically set an optimal point for a signal decision making |
Aug. 5, 2008 |
| 7408419 |
Sigma-delta fractional-N PLL with reduced frequency error |
Aug. 5, 2008 |
| 7402821 |
Application of digital frequency and phase synthesis for control of electrode voltage phase in a high-energy ion implantation machine, and a means for accurate calibration of electrode voltage |
Jul. 22, 2008 |
| 7400204 |
Linear phase detector and charge pump |
Jul. 15, 2008 |
| 7397313 |
Auto-gain controlled digital phase-locked loop and method thereof |
Jul. 8, 2008 |
| 7394323 |
PLL frequency synthesizer |
Jul. 1, 2008 |
| 7394320 |
Phase-locked loop and method for operating a phase-locked-loop |
Jul. 1, 2008 |
| 7388443 |
Apparatus and method for wide tuning-range ring oscillators |
Jun. 17, 2008 |
| 7388441 |
Robust phase-lock detector |
Jun. 17, 2008 |
| 7375591 |
Robust false locking prevention in referenceless frequency acquisition |
May. 20, 2008 |
| 7372339 |
Phase lock loop indicator |
May. 13, 2008 |
| 7369002 |
Phase locked loop fast lock method |
May. 6, 2008 |
| 7368963 |
Delay locked loop for use in semiconductor memory device and method thereof |
May. 6, 2008 |
| 7362186 |
Phase-locked loop circuit and data reproduction apparatus |
Apr. 22, 2008 |
| 7362185 |
Analog based, state machine controlled, frequency smooth switching method for frequency timing generators |
Apr. 22, 2008 |
| 7352297 |
Method and apparatus for efficient implementation of digital filter with thermometer-code-like output |
Apr. 1, 2008 |
| 7352250 |
Phase locked loop circuits, offset PLL transmitters, radio frequency integrated circuits and mobile phone systems |
Apr. 1, 2008 |
| 7339438 |
Phase and delay locked loops and semiconductor memory device having the same |
Mar. 4, 2008 |
| 7336110 |
Differential amplitude controlled sawtooth generator |
Feb. 26, 2008 |
| 7332973 |
Circuit and method for digital phase-frequency error detection |
Feb. 19, 2008 |
| 7332972 |
Phase-locked loop circuit |
Feb. 19, 2008 |
| 7330079 |
Method and apparatus for rapid local oscillator frequency calibration |
Feb. 12, 2008 |
| 7327197 |
Radiation hardened phase locked loop |
Feb. 5, 2008 |
| 7323946 |
Lock detect circuit for a phase locked loop |
Jan. 29, 2008 |
| 7323942 |
Dual loop PLL, and multiplication clock generator using dual loop PLL |
Jan. 29, 2008 |
| 7321268 |
Ultra wideband and fast hopping frequency synthesizer for MB-OFDM wireless application |
Jan. 22, 2008 |
| 7317361 |
Ensemble oscillator and related methods |
Jan. 8, 2008 |
| 7315218 |
Method and apparatus to center the frequency of a voltage-controlled oscillator |
Jan. 1, 2008 |
| 7315216 |
Adjusting frequency device of built-in oscillator for USB interface and method thereof |
Jan. 1, 2008 |
| 7315214 |
Phase locked loop |
Jan. 1, 2008 |
| 7310021 |
Phase-locked loop with tunable-transfer function |
Dec. 18, 2007 |
| 7310020 |
Self-biased phased-locked loop |
Dec. 18, 2007 |
| 7301416 |
Semiconductor integrated circuit for wireless communication |
Nov. 27, 2007 |
| 7298227 |
Local oscillator for multi-band wireless communication |
Nov. 20, 2007 |
| 7298219 |
Phase-locked loop circuit |
Nov. 20, 2007 |
| 7298216 |
Fine clock resolution digital phase locked loop apparatus |
Nov. 20, 2007 |
| 7292832 |
Timing and frequency control method and circuit for digital wireless telephone system terminals |
Nov. 6, 2007 |
| 7292107 |
Modulation method and apparatus with adjustable divisors of the dividers in phase-locked loop |
Nov. 6, 2007 |
| 7283008 |
Oscillator circuit with temperature compensation function |
Oct. 16, 2007 |
| 7283004 |
Phase locked loop filter |
Oct. 16, 2007 |
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