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Class Information
Number: 331/17
Name: Oscillators > Automatic frequency stabilization using a phase or frequency sensing means > Particular error voltage control (e.g., intergrating network)
Description: Subject matter wherein the A.F.S. loop of the oscillator is provided with means to modify or control the error voltage so as to compensate or correct for undesired changes in the error voltage brought about by some deficiency in the oscillator system, such as a drift in reference frequency, hunting due to instability around the A.F.S. loop, undesired shift in phase of side band frequencies, and so forth.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7675368 |
Hybrid stochastic gradient based digitally controlled oscillator gain K.sub.DCO estimation |
Mar. 9, 2010 |
| 7675367 |
Design structure for an automated real-time frequency band selection circuit for use with a voltage controlled oscillator |
Mar. 9, 2010 |
| 7675335 |
Phase detecting module and related phase detecting method |
Mar. 9, 2010 |
| 7667546 |
LVDS receiver for controlling current based on frequency and method of operating the LVDS receiver |
Feb. 23, 2010 |
| 7667545 |
Automatic calibration lock loop circuit and method having improved lock time |
Feb. 23, 2010 |
| 7667529 |
Charge pump warm-up current reduction |
Feb. 23, 2010 |
| 7663415 |
Phase locked loop (PLL) method and architecture |
Feb. 16, 2010 |
| 7659785 |
Voltage controlled oscillator and PLL having the same |
Feb. 9, 2010 |
| 7659783 |
System and method for phase-locked loop (PLL) for high-speed memory interface (HSMI) |
Feb. 9, 2010 |
| 7659782 |
Apparatus and method to reduce jitter in a phase locked loop |
Feb. 9, 2010 |
| 7656336 |
High-speed, single-slope analog-to-digital converter |
Feb. 2, 2010 |
| 7656206 |
Phase-locked loop circuit |
Feb. 2, 2010 |
| 7649421 |
Quality of phase lock and loss of lock detector |
Jan. 19, 2010 |
| 7649408 |
Loop filters |
Jan. 19, 2010 |
| 7646253 |
Frequency-locked clock generator |
Jan. 12, 2010 |
| 7642863 |
Systems and methods for PLL linearity measurement, PLL output duty cycle measurement and duty cycle correction |
Jan. 5, 2010 |
| 7639089 |
Charge pump with reduced turn-off time and phase locked loop including the same |
Dec. 29, 2009 |
| 7639087 |
Phase-locked loop |
Dec. 29, 2009 |
| 7636000 |
Phase locked loop without a charge pump and integrated circuit having the same |
Dec. 22, 2009 |
| 7633351 |
Differential ring oscillator |
Dec. 15, 2009 |
| 7633347 |
Apparatus and method for operating a phase-locked loop circuit |
Dec. 15, 2009 |
| 7633324 |
Data output strobe signal generating circuit and semiconductor memory apparatus having the same |
Dec. 15, 2009 |
| 7629854 |
Switch-capacitor loop filter for phase lock loops |
Dec. 8, 2009 |
| 7626464 |
Multi-frequency signal source |
Dec. 1, 2009 |
| 7626449 |
Apparatus and method for tuning center frequency of a filter |
Dec. 1, 2009 |
| 7616071 |
PLL circuit and semiconductor device provided with PLL circuit |
Nov. 10, 2009 |
| 7616069 |
Method and system for fast PLL close-loop settling after open-loop VCO calibration |
Nov. 10, 2009 |
| 7616068 |
Frequency synthesizer for integrated circuit radios |
Nov. 10, 2009 |
| 7616067 |
Phase synchronization circuit and electronic apparatus |
Nov. 10, 2009 |
| 7613267 |
Digitally-synthesized loop filter method and circuit particularly useful for a phase locked loop |
Nov. 3, 2009 |
| 7612618 |
PLL apparatus for OFDM system having variable channel bands and operating method thereof |
Nov. 3, 2009 |
| 7612617 |
Voltage-controlled oscillator gain calibration for two-point modulation in a phase-locked loop |
Nov. 3, 2009 |
| 7612590 |
Oscillating apparatus |
Nov. 3, 2009 |
| 7609756 |
Rotary clock flash analog to digital converter system and method |
Oct. 27, 2009 |
| 7609118 |
Phase-locked loop calibration system |
Oct. 27, 2009 |
| 7609117 |
Phase-locked loop circuit with current-pulse injection for improving linearity |
Oct. 27, 2009 |
| 7609108 |
Phase-locked loop and compound MOS capacitor thereof |
Oct. 27, 2009 |
| 7605667 |
Frequency synthesizer with a harmonic locked phase/frequency detector |
Oct. 20, 2009 |
| 7605664 |
All digital phase locked loop system and method |
Oct. 20, 2009 |
| 7605663 |
Method and apparatus for stabilizing output frequency of PLL (phase lock loop) and phase lock loop thereof |
Oct. 20, 2009 |
| 7602259 |
Voltage-controlled oscillator |
Oct. 13, 2009 |
| 7599418 |
Method and apparatus for a frequency hopper |
Oct. 6, 2009 |
| 7598816 |
Phase lock loop circuit with delaying phase frequency comparson output signals |
Oct. 6, 2009 |
| 7595699 |
Look loop circuit and method having improved lock time |
Sep. 29, 2009 |
| 7595698 |
PLL lock time reduction |
Sep. 29, 2009 |
| 7586379 |
Voltage controlled oscillator with operation current adjusting device |
Sep. 8, 2009 |
| 7586378 |
Method and system for using a frequency locked loop logen in oscillator systems |
Sep. 8, 2009 |
| 7583773 |
Frequency synthesizing device with automatic calibration |
Sep. 1, 2009 |
| 7583152 |
Phase-locked loop with self-correcting phase-to-digital transfer function |
Sep. 1, 2009 |
| 7580498 |
Closed loop control system and method of dynamically changing the loop bandwidth |
Aug. 25, 2009 |
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