| Patents for H03K 7 - Modulating pulses with a continuously-variable modulating signal (4,039) |
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| 02/13/1991 | EP0412573A2 Analog signal to frequency converter |
| 02/12/1991 | US4992673 Fast settling voltage to frequency converter for high speed analog to digital conversion |
| 01/30/1991 | EP0410189A1 Pulse width modulator |
| 01/29/1991 | US4989219 Midlevel carrier modulation and demodulation techniques |
| 01/29/1991 | US4989098 Processing apparatus using selectable period triangular or sawtooth waves |
| 01/29/1991 | CA1279727C Digital pulse width modulator |
| 01/22/1991 | US4987320 Multiphase multiplier |
| 12/13/1990 | DE3918419A1 Pulse modulation with constant pulse amplitude - scanning carrier signal with threshold values for generating modulated pulse train |
| 11/28/1990 | EP0247189A4 Method and apparatus for encoding and transmitting signals |
| 10/31/1990 | EP0395118A1 Analog signal delay circuit |
| 10/24/1990 | EP0393728A2 Current switching digital-to-analog converter |
| 10/04/1990 | WO1990011646A1 Process and device for voltage-frequency conversion |
| 10/03/1990 | EP0390226A1 Jitter absorption circuit |
| 09/26/1990 | EP0389156A2 Current-to-frequency converter |
| 09/19/1990 | EP0387686A2 Voltage-to-frequency conversion method and device for implementing the method |
| 09/19/1990 | EP0387685A2 Voltage-to-frequency conversion method and device for implementing the method |
| 09/12/1990 | EP0386933A2 Audio amplifier with phase modulated pulse width modulation |
| 09/11/1990 | US4956720 Jitter control circuit having signal delay device using CMOS supply voltage control |
| 08/29/1990 | EP0384858A2 A fast settling voltage to frequency converter for high speed analog to digital conversion |
| 08/29/1990 | EP0384399A2 Bipolar voltage to frequency converter |
| 08/28/1990 | US4952884 Pulse width modulation amplifier circuit |
| 08/08/1990 | EP0381260A1 Phase-controllable oscillator |
| 08/07/1990 | US4947033 Voltage/frequency converter and its use in an optical wave guide transmission arrangement |
| 07/17/1990 | US4942401 Analog to digital conversion with charge balanced voltage to frequency converter having polarity responsive offset |
| 07/03/1990 | US4939387 Impulse waveform drive apparatus for surface acoustic wave chirp system |
| 06/20/1990 | EP0373357A1 Method and device to control an externally excited DC motor |
| 06/06/1990 | EP0371193A1 Process and device for the conversion of voltage into frequency |
| 05/23/1990 | EP0369011A1 Multiphase multiplier |
| 04/04/1990 | EP0360888A1 CMOS pulse width modulator |
| 04/03/1990 | US4914396 PWM waveform generator |
| 03/27/1990 | US4912433 VCO controlled by separate phase locked loop |
| 03/20/1990 | US4910448 PWM circuit |
| 03/13/1990 | US4908622 Process and circuit for sampling according to instantaneous signal value, independent from the frequency range of the signal to be recorded |
| 02/28/1990 | CN2053526U Chess board |
| 01/24/1990 | EP0352137A2 Pulse-width modulator and driving unit using the same |
| 01/23/1990 | US4896372 Pulse width modulator for AM-RF transmitter |
| 01/02/1990 | US4891828 Voltage to pulse-width conversion circuit |
| 11/23/1989 | EP0342626A2 Voltage controlled oscillator circuit |
| 10/03/1989 | US4871952 Motor speed control apparatus |
| 09/26/1989 | US4870351 Electronic watt-hour meter with up and down integration for error correction |
| 09/26/1989 | CA1260555A1 Method and apparatus for converting an electrical signal into a proportional frequency |
| 08/22/1989 | US4859937 Pulse width modulator in an electronic watt-hour meter with up and down integration for error correction |
| 08/15/1989 | US4858097 Switching power supply with an injection signal frequency locking circuit |
| 08/02/1989 | EP0108124B1 Variable frequency generator responsive to digital data |
| 07/12/1989 | EP0323871A2 Voltage to frequency converter and its application in a fibre optic transmission system |
| 07/11/1989 | US4847620 Clock-controlled voltage-to-frequency converter |
| 07/06/1989 | DE3742443A1 Circuit arrangement for digitising an analog signal |
| 06/27/1989 | US4843339 Isolation amplifier including precision voltage-to-duty-cycle converter and low ripple, high bandwidth charge balance demodulator |
| 06/20/1989 | CA1256215A1 Digital-to-analog converter with output sampler |
| 06/13/1989 | US4839788 Bipolar voltage to frequency converter |
| 06/13/1989 | US4839653 High-speed voltage-to-frequency converter |
| 05/16/1989 | US4831392 Image processing apparatus using pulse width modulation with improved sensitivity |
| 04/18/1989 | US4823027 Sample and hold circuit |
| 04/11/1989 | US4820940 Control circuits operating with pulse-width modulated signals |
| 02/28/1989 | US4809274 System for processing audio signals |
| 02/28/1989 | US4808846 Bridge-to-frequency converter |
| 02/21/1989 | CA1250350A1 Signal generator producing pulses with sloping edges |
| 02/07/1989 | US4803445 Variable frequency oscillator |
| 01/26/1989 | WO1989000739A1 Multiphase multiplier |
| 01/25/1989 | CN1030678A High effective and reliable group transmission mode of informations |
| 01/24/1989 | CA1249356A1 Sensor communication system |
| 01/17/1989 | US4799165 Level detecting waveform sampling system |
| 01/11/1989 | EP0298874A1 Impulse modulation method and device therefor |
| 12/28/1988 | EP0296967A2 Amplifier for voltage or current to frequency converter |
| 11/22/1988 | US4786877 Amplifier for voltage or current to frequency converter |
| 11/15/1988 | US4785389 Astable, magnetically coupled multivibrator |
| 11/15/1988 | US4784001 Magnetic flowmeter with isolation amplifier and ranging circuit therefor and method |
| 10/04/1988 | US4775841 Voltage to frequency conversion circuit with a pulse width to period ratio proportional to input voltage |
| 08/16/1988 | US4764692 MOS power device usable both as an N-channel MOS transistor and as a P-channel MOS transistor |
| 07/19/1988 | CA1239450A1 Digital data modulator and digital-to-analog converter |
| 06/28/1988 | US4754466 Method for chip selection and counting in a digital pulse width modulated integrated circuit |
| 05/31/1988 | US4748398 Circuit for controlling a series switching element in a clocked power supply |
| 05/10/1988 | US4743783 Pulse width modulator circuit for switching regulators |
| 05/03/1988 | US4742316 Pulse-width modulator |
| 05/03/1988 | US4742315 Integrated NMOS circuit |
| 04/12/1988 | US4737736 Method and system for stabilizing and linearizing the output of a voltage-to-frequency converter |
| 03/29/1988 | US4734842 Signal converter |
| 03/24/1988 | WO1988002201A1 Digital audio companding and error conditioning |
| 03/24/1988 | WO1988002199A1 Method and system for modulating a carrier signal |
| 03/09/1988 | EP0259256A2 Astable magnetically coupled multivibrator |
| 03/01/1988 | US4728886 Method and apparatus for converting an electrical signal into a proportional frequency |
| 03/01/1988 | US4728811 Sample-and-hold circuit |
| 02/16/1988 | CA1232956A1 Controller for generating a pair of mutually exclusive pulse train signals |
| 01/19/1988 | US4720841 Developing a digital signal that is integrated measure of an analog voltage |
| 01/19/1988 | US4720683 Circuit for preventing retarding field oscillations in electron tubes, especially for a pulse-width modulation stage in transmitters |
| 12/29/1987 | US4716510 Automatic restart circuit for a switching power supply |
| 12/17/1987 | DE3719713A1 Control device for an image reproduction device |
| 12/16/1987 | EP0249270A2 Pulse width modulator |
| 12/09/1987 | EP0248297A2 Digital pulse width modulator |
| 12/08/1987 | CA1230168A1 Auto-zero sample and hold circuit |
| 12/02/1987 | EP0247189A1 Apparatus for encoding and transmitting signals. |
| 12/01/1987 | US4710748 Method and device for converting an analog signal into a pulse signal |
| 11/11/1987 | EP0244623A2 Automatic restart circuit for a switching power supply |
| 11/04/1987 | EP0243878A1 Integrated NMOS circuit arrangement |
| 10/27/1987 | US4703251 Testing and calibrating of amplitude insensitive delay lines |
| 10/06/1987 | US4698523 Servo data demodulator |
| 10/06/1987 | CA1227872A1 Apparatus for converting analog-format signals to pulse-format signals |
| 09/22/1987 | US4695931 Voltage/frequency converter with frequency drift compensation loop |
| 09/22/1987 | US4695742 Charge balance voltage-to-frequency converter utilizing CMOS circuitry |
| 09/15/1987 | US4694208 Current-impulse converter circuit with variable time constant |