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Class Information
Number: 327/175
Name: Miscellaneous active electrical nonlinear devices, circuits, and systems > Signal converting, shaping, or generating > Rectangular (e.g., clock, etc.) or pulse waveform width control > Duty cycle control
Description: Subject matter wherein the ratio of pulse width to pulse separation in a periodic wave is regulated.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Patent Number Title Of Patent Date Issued
8713331 Semiconductor device including a clock generating circuit for generating an internal signal having a coarse delay line, a fine delay line and a selector circuit Apr. 29, 2014
8710886 Semiconductor memory device and method for driving the same Apr. 29, 2014
8704572 Implementing low duty cycle distortion and low power differential to single ended level shifter Apr. 22, 2014
8686778 Integrated pulse-control and enable latch circuit Apr. 1, 2014
8686801 Power supply and DC-DC-conversion Apr. 1, 2014
8680929 Low-1/F-noise local oscillator for non-overlapping differential I/Q signals Mar. 25, 2014
8669799 Duty cycle calibration of a clock signal Mar. 11, 2014
8671380 Dynamic frequency control using coarse clock gating Mar. 11, 2014
8664978 Methods and apparatus for time to current conversion Mar. 4, 2014
8664992 Duty cycle controlling circuit, duty cycle adjusting cell, and dutycycle detecting circuit Mar. 4, 2014
8653870 PWM signal output circuit Feb. 18, 2014
8653871 Counter circuit Feb. 18, 2014
8653873 Generation of adjustable phase reference waveform Feb. 18, 2014
8648639 Duty adjustment circuits and signal generation devices using the same Feb. 11, 2014
8648637 Slew rate boost circuit, output buffer having the same, and method thereof Feb. 11, 2014
8643420 Integrated circuit pulse generators Feb. 4, 2014
8644085 Duty cycle distortion correction Feb. 4, 2014
8644440 Apparatus and methods for detection and correction of transmitter duty cycle distortion Feb. 4, 2014
8638888 Analog correlation technique for ultra low power receivers Jan. 28, 2014
8633780 PWM control circuit and motor equipped with the same Jan. 21, 2014
8629702 Digital clock regenerator Jan. 14, 2014
8629667 Pulse width modulator with an adjustable waveform generator for controlling duty cycle of a pulse width modulated signal Jan. 14, 2014
8624647 Duty cycle correction circuit for memory interfaces in integrated circuits Jan. 7, 2014
8618858 Pulse generator and method for generating pulse Dec. 31, 2013
8614595 Low cost ultra versatile mixed signal controller circuit Dec. 24, 2013
8593183 Architecture for controlling clock characteristics Nov. 26, 2013
8581651 Duty cycle based phase interpolators and methods for use Nov. 12, 2013
8581650 Duty cycle correction circuit and delay locked loop circuit including the same Nov. 12, 2013
8570083 Pulse width modulation circuit and switching amplifier using the same Oct. 29, 2013
8570084 Circuits and methods for clock signal duty-cycle correction Oct. 29, 2013
8558580 Data channel circuit with reference clock signal free of glitches Oct. 15, 2013
8558632 Repetitive single cycle pulse width modulation generation Oct. 15, 2013
8552780 Method and apparatus for determining duty cycle of a clock in a circuit using a configurable phase locked loop Oct. 8, 2013
8552778 Duty cycle corrector and duty cycle correction method Oct. 8, 2013
8547154 Programmable duty cycle selection using incremental pulse widths Oct. 1, 2013
8542045 Duty correcting circuit, delay-locked loop circuit and method of correcting duty Sep. 24, 2013
8542046 Apparatus, system, and method for voltage swing and duty cycle adjustment Sep. 24, 2013
8536917 Duty cycle adjustment circuit Sep. 17, 2013
8519763 Integrated circuits with dual-edge clocking Aug. 27, 2013
8519758 Digital DLL including skewed gate type duty correction circuit and duty correction method thereof Aug. 27, 2013
8513996 Semiconductor memory apparatus and method for correcting duty thereof Aug. 20, 2013
8513997 RF duty cycle correction circuit Aug. 20, 2013
8514117 Excess loop delay compensation for a continuous time sigma delta modulator Aug. 20, 2013
8508310 Method and device for generating PWM signals Aug. 13, 2013
8508274 Duty correction circuit Aug. 13, 2013
8508262 Signal generator with output frequency greater than the oscillator frequency Aug. 13, 2013
8502573 Frequency divider for generating output clock signal with duty cycle different from duty cycle of input clock signal Aug. 6, 2013
8502583 High-speed duty cycle correction circuit Aug. 6, 2013
8497720 Semiconductor device Jul. 30, 2013
8487671 Internal-clock adjusting circuit Jul. 16, 2013

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