ClassID:

221442

H03K4/502 - CPC Classification

Classification description:

Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor the starting point of the flyback period being determined by the amplitude of the voltage across the capacitor, e.g. by a comparator the capacitor being charged from a constant-current source

Recent Application in this class:
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TRIMMING TECHNIQUE FOR OSCILLATORS

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Duty timing detector for detecting duty timing of toggle signal, device including the duty timing detector, and method of operating toggle signal receiving device

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20220334196
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Pin-leakage compensation scheme for external resistor-based oscillators

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20220302906
2022-09-22

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20200395921
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Precision oscillators that use imprecise components

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20200358428
2020-11-12

Current-controlled oscillator

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20200343858
2020-10-29

Oscillator circuit

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20200162062
2020-05-21

Oscillator temperature compensation techniques

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20200162059
2020-05-21

Relaxation oscillator and method for operating a relaxation oscillator

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20200014372
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RC oscillator watchdog circuit

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20190386650
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Comparator and oscillation circuit

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20190356269
2019-11-21

Oscillator circuits capable of compensating for PVT variations

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20190245527
2019-08-08

Ramp signal generation device and CMOS image sensor including the same

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20190199330
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Precision oscillators that use imprecise components

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20190190504
2019-06-20

Signal calculator

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20190149140
2019-05-16

Resistor-capacitor oscillator

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20190149137
2019-05-16

Oscillator, method of operating the same, and PWM controller including the same

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20190123685
2019-04-25

Apparatuses and methods for temperature independent oscillators

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20190044478
2019-02-07

Low power oscillator using flipped-gate MOS

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20180167030
2018-06-14

Apparatuses and methods for temperature independent oscillators

#22
20180145665
2018-05-24

Relaxation oscillator with overshoot error integration

#23
20180034450
2018-02-01

Ramp based clock synchronization for stackable circuits

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20170264847
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SEMICONDUCTOR DEVICE, RAMP SIGNAL CONTROL METHOD, IMAGE DATA GENERATING METHOD, AND CAMERA SYSTEM

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20170194952
2017-07-06

Oscillator with inherent comparator delay influence eliminated

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20170118722
2017-04-27

Wireless power transmitter

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20170104475
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Stable oscillator for use in an electronic circuit

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Integration circuit

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Ramp generation module

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Low power oscillator with charge subtraction scheme

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20150222272
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2015-07-16

Triangular wave generating circuit to provide clock synchronization

#40
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Runtime compensated oscillator

#41
20140197897
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Precision oscillator with temperature compensation

#42
20140132236
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Slope compensation module

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20140043562
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Comparator, oscillator using the same, dc/dc converter, control circuit thereof, and electronic apparatus

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20140035623
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Comparator with transition threshold tracking capability

#46
20140028408
2014-01-30

Comparator and relaxation oscillator employing same

#47
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Sawtooth wave generation circuit

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Trimming circuit for clock source

#49
20130169324
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Fully integrated circuit for generating a ramp signal

#50
20130057353
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Low current single chip oscillator timing circuit

#51
20130038364
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Oscillation circuit and semiconductor integrated circuit including the same

#52
20120319789
2012-12-20

Relaxation oscillator circuit with reduced sensitivity of oscillation frequency to comparator delay variation

#53
20120319788
2012-12-20

Relaxation oscillator with low power consumption

#54
20120313720
2012-12-13

Runtime compensated oscillator

#55
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Control circuit of a switched-mode power converter and method thereof

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FAULT TOLERANT REDUNDANT CLOCK CIRCUIT

#57
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Precision oscillator with temperature compensation

#58
20120126906
2012-05-24

Relaxation oscillator

#59
20120062326
2012-03-15

Self-calibrating relaxation oscillator based clock cycle

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2012-01-26

Frequency-jittering apparatuses, frequency-jittering methods and power management devices

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Heterodyne dual slope frequency generation method for the load change of power supply

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Sawtooth oscillator

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Clock generating circuit

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Flexible low current oscillator for multiphase operations

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Temperature compensated RC oscillator for signal conditioning ASIC using source bulk voltage of MOSFET

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Flexible low current oscillator for multiphase operations

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2010-01-21

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2009-12-10

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2009-11-26

Method of forming an oscillator circuit and structure therefor

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20090196375
2009-08-06

Supply independent Schmitt trigger RC oscillator

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20090154543
2009-06-18

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20090085617
2009-04-02

RAMP VOLTAGE CIRCUIT

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20090079603
2009-03-26

Constant current source, ramp voltage generation circuit, and A/D converter

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20090051399
2009-02-26

Electronic circuit with low noise delay circuit

#91
20090009256
2009-01-08

Variable-frequency oscillator

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20080180151
2008-07-31

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#93
20080164925
2008-07-10

Dual mode clock generator

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20080157831
2008-07-03

Clock generator with reduced electromagnetic interference for DC-DC converters

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20080130712
2008-06-05

Switched-current oscillator for clock-frequency spreading

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20080129404
2008-06-05

Low-power oscillator

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20080100389
2008-05-01

Comparator with self-biased reference voltage for an oscillator

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20080068054
2008-03-20

Switching regulator

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20080054997
2008-03-06

Sawtooth wave generating apparatus, a method of generating sawtooth wave, a constant current circuit, and a method of adjusting amount of current from the same

#100
20080042763
2008-02-21

Method and apparatus to improve frequency stability of an integrated circuit oscillator

#101
20080007352
2008-01-10

Current-controlled oscillator

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20070279141
2007-12-06

Oscillator circuit having temperature and supply voltage compensation

#103
20070182499
2007-08-09

Oscillation circuit

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20070146087
2007-06-28

RC oscillator integrated circuit including capacitor

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20070069828
2007-03-29

Supply independent Schmitt trigger RC oscillator

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20060267674
2006-11-30

Threshold voltage extraction for producing a ramp signal with reduced process sensitivity

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20060197612
2006-09-07

Electric circuit and oscillator comprising said electric circuit

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20060164277
2006-07-27

Programmable integrating ramp generator and method of operating the same

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20060139111
2006-06-29

Method and apparatus to improve frequency stability of an integrated circuit oscillator

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20060091874
2006-05-04

Sawtooth wave generating apparatus, a method of generating sawtooth wave, a constant current circuit, and a method of adjusting amount of current from the same

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20060038625
2006-02-23

Oscillator circuit for EEPROM high voltage generator

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20060017474
2006-01-26

Transmitter for a controlled-shape switched signal on a communication line

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20050237118
2005-10-27

Precision relaxation oscillator without comparator delay errors

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20050206414
2005-09-22

Controlled slope voltage ramp generator

#115
20050200389
2005-09-15

Frequency programmable feed-forward oscillator and triangle wave generator

#116
20050168177
2005-08-04

Segmented sawtooth generator

#117
20050104672
2005-05-19

Method and apparatus to improve frequency stability of an integrated circuit oscillator

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20050040897
2005-02-24

Method of forming a variable frequency oscillator and structure therefor

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20050007164
2005-01-13

Driver circuit having a slew rate control system with improved linear ramp generator including ground

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15664838
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Cancellation of a baseline current signal via current subtraction within a linear relaxation oscillator-based current-to-frequency converter circuit

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15277859
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Analog dithering to reduce vertical fixed pattern noise in image sensors

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15277642
2017-09-26

Ramp signal generator for double ramp analog to digital converter

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15190358
2017-08-22

Cancellation of a baseline current signal via current subtraction within a linear relaxation oscillator-based current-to-frequency converter circuit

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14989626
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Variable frequency relaxation oscillator

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14745641
2016-04-19

Ramp voltage generator and method for testing an analog-to-digital converter