| Patents for H03K 7 - Modulating pulses with a continuously-variable modulating signal (4,039) |
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| 07/01/1993 | DE4241121A1 Proportional current operated activator for valves - has pulse width modulated mode with dither frequency voltage and control signals mapped into memory |
| 06/17/1993 | DE4141093A1 Digitally controlled pulse width modulator for dc motor control - provides output signal with variable duty cycle to be applied to DC motor to control rate of rotation |
| 06/15/1993 | US5220203 Variable pulse width precision pulse generator |
| 06/09/1993 | EP0545077A2 Device for generating a pulse-width modulated signal |
| 06/08/1993 | US5218315 Switching amplifier |
| 06/02/1993 | EP0544500A1 Frequency stabilizing circuit used for a pulse modulator for an image signal including a synchronous signal |
| 05/27/1993 | WO1993010598A1 Device for modifying the pulse duty factor or the pulse number density of a signal sequence |
| 05/25/1993 | US5214396 Method and apparatus for providing a biphase modulated signal having flat envelope characteristics without a direct current component |
| 05/13/1993 | WO1993009599A2 Analog-to-digital converter and method of fabrication |
| 05/13/1993 | DE4136980A1 Vorrichtung zur veraenderung des tastverhaeltnisses oder der pulszahldichte einer signalfolge Apparatus for alteration of the duty cycle of the pulse number or density of a signal sequence |
| 05/04/1993 | US5208559 Pulse shaping system for a pulse width modulation system |
| 04/27/1993 | US5206632 Actuating circuit for a liquid crystal display |
| 04/20/1993 | US5204552 Voltage controlled oscillator and an operating method thereof |
| 04/14/1993 | EP0536326A1 Electronic time vernier circuit. |
| 03/31/1993 | EP0534498A2 Process and device for frequency to voltage conversion |
| 03/30/1993 | US5198785 Dual edge pulse width modulation system |
| 03/10/1993 | EP0247189B1 Apparatus for encoding and transmitting signals |
| 03/09/1993 | US5192922 Anti-false triggering system for a pulse width modulation system |
| 01/05/1993 | US5177373 Pulse width modulation signal generating circuit providing N-bit resolution |
| 12/01/1992 | US5168247 Oscillator and voltage-to-frequency coverter employing the same |
| 11/24/1992 | US5166542 Signal converter for converting analog signal into pulse signal and control system using the same |
| 11/24/1992 | CA1310758C Method and apparatus for encoding and transmitting signals |
| 11/03/1992 | US5160896 Class D amplifier |
| 10/27/1992 | US5159613 Side-band generator |
| 10/21/1992 | EP0509484A1 PWM modulation circuit for a cross-coil meter driver |
| 10/20/1992 | US5157452 Method and apparatus for liquid content detection with refractive index and temperature signal mixing |
| 10/14/1992 | EP0284627B1 Digital audio companding and error conditioning |
| 09/16/1992 | EP0503571A1 Pulse-width modulation amplifier |
| 09/15/1992 | US5148127 Biphase shift keying modulation circuit having constant envelope characteristics |
| 09/08/1992 | US5146601 Pulse width modulation input/output controller for image processing apparatus |
| 09/02/1992 | EP0500804A1 Self-synchronizing infra-red communication system |
| 09/01/1992 | US5144265 Pulse width modulation technique |
| 08/18/1992 | US5140611 Pulse width modulated self-clocking and self-synchronizing data transmission and method for a telephonic communication network switching system |
| 08/11/1992 | US5138286 Method and device for voltage frequency transformation |
| 08/11/1992 | US5138273 FM demodulator |
| 08/04/1992 | US5136253 Phase comparator having two different phase comparison characteristics |
| 07/07/1992 | US5128792 Self-synchronizing infra-red communication system |
| 07/07/1992 | US5128610 Current-to-frequency converter |
| 06/23/1992 | US5124569 Digital phase-lock loop system with analog voltage controlled oscillator |
| 06/16/1992 | US5122792 Electronic time vernier circuit |
| 06/11/1992 | WO1992009187A1 Circuit for generating variable width pulses for a liquid cristal display driver |
| 06/10/1992 | EP0489259A2 Capacity-frequency converter |
| 06/09/1992 | US5121008 Circuit for generating or demodulating a square wave and other wave forms |
| 06/02/1992 | US5119096 Analog to frequency converter with balancing compensation cycles |
| 06/02/1992 | US5119045 Pulse width modulation circuit |
| 05/30/1992 | CA2056052A1 Circuit for generating or demodulating a square wave and other wave forms |
| 05/27/1992 | EP0487177A1 Variable length precision pulse generator |
| 05/21/1992 | DE4036773A1 A=D converter with tapped delay lines - supplying signals in opposite sequences to SR flip=flops whose outputs feed binary encoding logic |
| 05/21/1992 | DE4036771A1 Pulse modulator for calibration of inaccessible measuring devices - incorporates sensing electronics based on chaos generator and producing meaningful periodic repetition of characteristic pulse sequence |
| 05/19/1992 | US5115395 Pulse width modulation technique |
| 05/12/1992 | US5113158 Pulse width modulation circuit |
| 05/06/1992 | EP0483870A2 Signal processing device |
| 04/28/1992 | CA1299751C Digital audio companding and error conditioning |
| 04/22/1992 | EP0481096A1 Method for determining the frequency amplification of a voltage-to-frequency converter |
| 04/15/1992 | EP0480674A2 Binary phase shift key modulator |
| 04/07/1992 | US5103114 Circuit technique for creating predetermined duty cycle |
| 03/11/1992 | EP0473816A1 Process and device for voltage-frequency conversion |
| 03/11/1992 | CN1015855B Reliable group transmission mode of informations |
| 03/03/1992 | US5093582 Pulse-width modulation waveform generator |
| 03/03/1992 | US5093581 Circuitry for generating pulses of variable widths from binary input data |
| 02/04/1992 | US5086280 Continuously variable pulsewidth waveform formation device employing two memories |
| 02/04/1992 | CA1295369C Electronic watt-hour meter with up and down integration for error correction |
| 01/22/1992 | EP0467519A1 Pulse width modulation technique |
| 01/20/1992 | CA2043916A1 Pulse width modulation technique |
| 01/15/1992 | EP0465487A1 Process and device for voltage-frequency conversion |
| 01/08/1992 | EP0464793A2 Liquid content detecting apparatus and method |
| 01/02/1992 | DE4020652A1 Time interval signal electronic generator for IC engine - produces output when state of free running counter coincides with content of register loaded by computer |
| 12/26/1991 | WO1991020074A1 Electronic time vernier circuit |
| 12/03/1991 | US5070312 Pulse width modulation circuit of programmable subframe system |
| 11/27/1991 | CN1014932B Method and apparatus for converting electrical signal into proportional frequency |
| 11/21/1991 | EP0457608A2 Apparatus for selecting a clock signal of a circuit controlled by a single chip microcomputer |
| 11/21/1991 | DE4015854A1 Pulse width modulation circuit for household appliance - has microprocessor output signal representing pulse duration and interval respectively |
| 11/19/1991 | CA1292290C Integrated nmos-circuit arrangement |
| 11/05/1991 | CA1291798C Pulse-width modulator |
| 10/31/1991 | DE4013087A1 Pulse width modem for magnetic and optical data carriers - carries out integration while specified number of extra integrators transmit output signal in background |
| 10/01/1991 | US5053769 Fast response digital interface apparatus and method |
| 10/01/1991 | US5053729 Pulse-width modulator |
| 09/18/1991 | EP0446891A2 Laser beam controller |
| 09/17/1991 | US5049761 CMOS pulse width modulator |
| 09/03/1991 | US5045800 Pulse width modulator control circuit |
| 08/27/1991 | CA1288165C Clock-controlled voltage-to-frequency converter |
| 08/21/1991 | EP0442209A1 Fast response digital interface apparatus and method |
| 08/13/1991 | US5039893 Signal delay device |
| 08/13/1991 | CA2031881A1 Fast response digital interface apparatus and method |
| 07/30/1991 | US5036529 Digital auto-phase-controlled retiming circuit |
| 07/09/1991 | US5030847 Pulse-width modulator and driving circuit |
| 06/25/1991 | US5026156 Method and system for pulse interval modulation |
| 06/11/1991 | US5023888 Pulse code recognition method and system |
| 05/21/1991 | US5017890 Phase-controllable oscillator |
| 05/16/1991 | WO1991007011A1 Self-synchronizing infra-red communication system |
| 04/30/1991 | US5012141 Signal delay device using CMOS supply voltage control |
| 04/16/1991 | US5008564 Method and device for converting voltage to frequency |
| 04/16/1991 | CA1283171C Pulse width modulator for am-rf transmitter |
| 04/03/1991 | EP0419450A1 Method and system for modulating a carrier signal |
| 04/03/1991 | EP0183849B1 Control circuit that operates on pulse-width modulated signals |
| 04/02/1991 | US5004935 Sample and hold circuit |
| 03/20/1991 | EP0417808A2 Phase comparator having two different comparison characteristics |
| 03/20/1991 | EP0417578A2 Circuit for driving a liquid crystal display |
| 03/19/1991 | US5001360 Method and device for converting voltage to frequency |
| 02/13/1991 | EP0412724A2 Signal converter for converting analog signal into pulses |