| |
 |
|
Class Information
Number: 331/57
Name: Oscillators > Ring oscillators
Description: Subject matter wherein the oscillator comprises three or more active elements connected or cascade, the output of one active element being connected to the input of another active element to form a closed chain or loop, the active elements being so connected and biased that they are caused to switch from a conducting to a nonconducting state in succession, cyclically, thereby generating self-sustained oscillations.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7619486 |
Method for detecting and compensating for temperature effects |
Nov. 17, 2009 |
| 7616070 |
Electronic oscillators having a plurality of phased outputs and such oscillators with phase-setting and phase-reversal capability |
Nov. 10, 2009 |
| 7612622 |
Method and device for determining a duty cycle offset |
Nov. 3, 2009 |
| 7612621 |
System for providing open-loop quadrature clock generation |
Nov. 3, 2009 |
| 7610163 |
Method of controlling quality for a print controller |
Oct. 27, 2009 |
| 7609119 |
Reference voltage generator for logic elements providing stable and predefined gate propagation time |
Oct. 27, 2009 |
| 7605668 |
Delay stage with controllably variable capacitive load |
Oct. 20, 2009 |
| 7605666 |
High frequency digital oscillator-on-demand with synchronization |
Oct. 20, 2009 |
| 7605661 |
Phase locked loop circuit including digital voltage-controlled oscillator, ring oscillator and selector |
Oct. 20, 2009 |
| 7603095 |
Apparatus and method of switching intervals |
Oct. 13, 2009 |
| 7602257 |
Signal generating circuit |
Oct. 13, 2009 |
| 7602219 |
Inverting cell |
Oct. 13, 2009 |
| 7598819 |
Electronic circuit with transistors sharing one and the same well |
Oct. 6, 2009 |
| 7598818 |
Temperature compensation for a voltage-controlled oscillator |
Oct. 6, 2009 |
| 7592877 |
Variable frequency oscillator and communication circuit with it |
Sep. 22, 2009 |
| 7592876 |
Leakage oscillator based aging monitor |
Sep. 22, 2009 |
| 7589583 |
Charge pump circuit |
Sep. 15, 2009 |
| 7589553 |
Electronic module with organic logic circuit elements |
Sep. 15, 2009 |
| 7586380 |
Bias circuit to stabilize oscillation in ring oscillator, oscillator, and method to stabilize oscillation in ring oscillator |
Sep. 8, 2009 |
| 7573339 |
Ring oscillator with ultra-wide frequency tuning range |
Aug. 11, 2009 |
| 7570104 |
Charge pump circuit control system |
Aug. 4, 2009 |
| 7567140 |
Voltage controlled oscillator having a bandwidth adjusted amplitude control loop |
Jul. 28, 2009 |
| 7567137 |
Programmable oscillators for high frequency clock generation for simulation environments |
Jul. 28, 2009 |
| 7567136 |
Ring oscillator circuit |
Jul. 28, 2009 |
| 7567134 |
System and method for synchronizing multiple oscillators |
Jul. 28, 2009 |
| 7560998 |
Clock signal output circuit |
Jul. 14, 2009 |
| 7554413 |
Voltage controlled oscillator with compensation for power supply variation in phase-locked loop |
Jun. 30, 2009 |
| 7548127 |
Digitally controlled ring oscillator |
Jun. 16, 2009 |
| 7548126 |
Phase locked loop circuit and control method thereof |
Jun. 16, 2009 |
| 7545691 |
Measuring circuit for qualifying a memory located on a semiconductor device |
Jun. 9, 2009 |
| 7545225 |
Regeneration device for rotary traveling wave oscillator |
Jun. 9, 2009 |
| 7545199 |
Power supply circuit for oscillator of semiconductor memory device and voltage pumping device using the same |
Jun. 9, 2009 |
| 7541882 |
On-chip tunable artificial tank circuit |
Jun. 2, 2009 |
| 7541881 |
Power supply noise insensitive charge pump, loop filter, VCO control, and VCO |
Jun. 2, 2009 |
| 7538626 |
Voltage controlled oscillator circuit with different sized shunt transistors |
May. 26, 2009 |
| 7535307 |
Internal voltage generator and semiconductor memory device having the same, and method of generating internal voltage |
May. 19, 2009 |
| 7532078 |
Scannable virtual rail method and ring oscillator circuit for measuring variations in device characteristics |
May. 12, 2009 |
| 7528669 |
Delay cell for voltage controlled oscillator including delay cells connected as a ring oscillator |
May. 5, 2009 |
| 7528668 |
Differential amplifier, differential amplifying method, and phase locked loop and delay locked loop using the same |
May. 5, 2009 |
| 7522008 |
Injection locker frequency divider |
Apr. 21, 2009 |
| 7521986 |
Switch element driver circuit and semiconductor device |
Apr. 21, 2009 |
| 7515008 |
Semiconductor integrated circuit having oscillator frequency compensation function |
Apr. 7, 2009 |
| 7515005 |
Variable frequency multi-phase oscillator |
Apr. 7, 2009 |
| 7515004 |
Voltage controlled oscillator with duty correction |
Apr. 7, 2009 |
| 7511584 |
Voltage controlled oscillator capable of operating in a wide frequency range |
Mar. 31, 2009 |
| 7508270 |
Differential-to-single-ended converter and phase-locked loop circuit having the same |
Mar. 24, 2009 |
| 7504901 |
Supply voltage controlled voltage and temperature compensated oscillator |
Mar. 17, 2009 |
| 7504896 |
Methods and apparatus for inline measurement of switching delay history effects in PD-SOI technology |
Mar. 17, 2009 |
| 7501904 |
Low power and duty cycle error free matched current phase locked loop |
Mar. 10, 2009 |
| 7498892 |
Split-biased interpolated voltage-controlled oscillator and phase locked loop |
Mar. 3, 2009 |
|
|
|
