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Class Information
Number: 331/1A
Name: Oscillators > Automatic frequency stabilization using a phase or frequency sensing means > Afc with logic elements
Description:










Patents under this class:

Patent Number Title Of Patent Date Issued
8704602 Two-point modulation device using voltage controlled oscillator, and calibration method Apr. 22, 2014
8692621 Methods and apparatus for oscillator frequency calibration Apr. 8, 2014
8677173 Method and circuit for trimming an internal oscillator of a USB device Mar. 18, 2014
8665034 Varactor tuning control using redundant numbering Mar. 4, 2014
8659360 Charge-to-digital timer Feb. 25, 2014
8648626 Clock generators, clock generating methods, and mobile communication device using the clock generator Feb. 11, 2014
8638172 Local oscillator Jan. 28, 2014
8618891 Method and apparatus of a resonant oscillator separately driving two independent functions Dec. 31, 2013
8610476 Apparatus and methods for lock detection for semi-digital and fully-digital clock data recovery Dec. 17, 2013
8593227 System and method of controlling gain of an oscillator Nov. 26, 2013
8581759 Vernier phase to digital converter for a rotary traveling wave oscillator Nov. 12, 2013
8577527 Drive control device for a vehicle Nov. 5, 2013
8564375 Methods and apparatus for self-trim calibration of an oscillator Oct. 22, 2013
8542067 Oscillation circuit and image display device Sep. 24, 2013
8531246 Direct digital interpolative synthesis Sep. 10, 2013
8525597 Clock frequency overshoot detection circuit Sep. 3, 2013
8519798 Phase-locked loop based chaotic spread spectrum generator Aug. 27, 2013
8515381 Systems and methods for improving 25% duty cycle switching mixer local oscillator timing Aug. 20, 2013
8508303 Digital frequency/phase locked loop Aug. 13, 2013
8502613 Oscillating circuit Aug. 6, 2013
8487708 Clock oscillator circuit and semiconductor device Jul. 16, 2013
8487707 Frequency synthesizer Jul. 16, 2013
8461933 Device and method for frequency calibration and phase-locked loop using the same Jun. 11, 2013
8456242 Frequency locked loop Jun. 4, 2013
8451066 PLL circuit and angular velocity sensor using the same May. 28, 2013
8441323 Signal processing using timing comparison May. 14, 2013
8436685 Oscillating circuit, DC-DC converter, and semiconductor device May. 7, 2013
8432231 Digital phase-locked loop clock system Apr. 30, 2013
8427244 Oscillation circuit and frequency-correcting oscillation circuit Apr. 23, 2013
8427243 Signal generating circuit and signal generating method Apr. 23, 2013
8427242 Ultra wideband on-chip pulse generator Apr. 23, 2013
8395453 Error compensation method, digital phase error cancellation module, and ADPLL thereof Mar. 12, 2013
8384488 Phase-lock in all-digital phase-locked loops Feb. 26, 2013
8362932 Circuit with a time to digital converter and phase measuring method Jan. 29, 2013
8334726 Semiconductor integrated circuit Dec. 18, 2012
8334725 Circuit and method for controlling mixed mode controlled oscillator and CDR circuit using the same Dec. 18, 2012
8330637 Time-to-digital converter and operation method thereof Dec. 11, 2012
8319563 Digitally controlled oscillator Nov. 27, 2012
8294525 Technique for linearizing the voltage-to-frequency response of a VCO Oct. 23, 2012
8289086 Fractional and integer PLL architectures Oct. 16, 2012
8283984 Method and apparatus of phase locking for reducing clock jitter due to charge leakage Oct. 9, 2012
8283983 Frequency calibration device and method for programmable oscillator Oct. 9, 2012
8274337 Digital phase locked loop Sep. 25, 2012
8269563 Dithering a digitally-controlled oscillator output in a phase-locked loop Sep. 18, 2012
8265818 Open architecture command system Sep. 11, 2012
8264283 Single side band mixer Sep. 11, 2012
8258831 Method and apparatus for clock generator lock detector Sep. 4, 2012
8253498 Phase locked loop with divider bias control Aug. 28, 2012
8237512 Digitally controlled oscillator and oscillation method for the same Aug. 7, 2012
8237511 Local oscillator and phase adjusting method for the same Aug. 7, 2012











 
 
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