Patents
Patents for H03K 9 - Demodulating pulses which have been modulated with a continuously-variable signal (1,929)
03/1991
03/21/1991WO1991003871A1 Fully integrated digital fm discriminator
03/20/1991EP0417578A2 Circuit for driving a liquid crystal display
02/1991
02/27/1991EP0112380B1 Frequency to current converter circuit
01/1991
01/29/1991CA1279706C Phase-locked loop with redundant reference input
01/15/1991US4985684 Fully integrated digital FM discriminator
11/1990
11/28/1990EP0247189A4 Method and apparatus for encoding and transmitting signals
06/1990
06/06/1990EP0371193A1 Process and device for the conversion of voltage into frequency
03/1990
03/20/1990US4910448 PWM circuit
11/1989
11/23/1989EP0342801A2 Signal processing system for period-to-voltage conversion
07/1989
07/11/1989US4846579 Frequency-voltage converting circuit
06/1989
06/27/1989US4843339 Isolation amplifier including precision voltage-to-duty-cycle converter and low ripple, high bandwidth charge balance demodulator
06/27/1989CA1256607A1 Burst demodulator
04/1989
04/05/1989EP0310170A2 Converter device
03/1989
03/28/1989US4816704 Frequency-to-voltage converter
01/1989
01/24/1989US4800338 Pulse count type FM demodulator
01/17/1989US4798973 High frequency charge pump/integrator circuit
12/1988
12/06/1988US4789976 Temperature compensation circuit for a delay circuit utilized in an FM detector
10/1988
10/11/1988US4777450 Circuit for demodulating a frequency-modulated signal
09/1988
09/07/1988CN88101063A Linearity control circuit for digital to analog converter
09/06/1988US4769798 Successive period-to-voltage converting apparatus
08/1988
08/10/1988EP0277638A2 Successive period-to-voltage converting apparatus
01/1988
01/07/1988EP0251239A2 FM Demodulator
12/1987
12/29/1987US4716398 Linearity control circuit for digital to analog converter
12/02/1987EP0247805A2 Circuit for demodulating a frequency-modulated signal
12/02/1987EP0247189A1 Apparatus for encoding and transmitting signals.
11/1987
11/17/1987US4707666 Frequency demodulator circuit with zero-crossing counter
10/1987
10/29/1987DE3614080A1 Demodulator
06/1987
06/04/1987WO1987003434A1 Method and apparatus for encoding and transmitting signals
05/1987
05/26/1987US4668918 Low order charge-pump filter
04/1987
04/28/1987EP0151633A4 An interruptible voltage-controlled oscillator.
04/16/1987DE3536475A1 Frequency-voltage converter
02/1987
02/10/1987US4642562 Phase difference demodulator
02/04/1987EP0210292A1 Frequency demodulation circuit with zero-crossing counter
12/1986
12/09/1986CA1215139A1 Frequency to current converter circuit
09/1986
09/24/1986EP0195500A2 Charge-pump circuit for a phase-locked loop
08/1986
08/12/1986US4605901 For a motor speed control system
07/1986
07/29/1986US4603301 Amplitude insensitive delay lines in a frequency modulated signal detector
07/22/1986US4602223 High rate modulator/demodulator for digital signals amplitude modulated on digital data
07/02/1986CA1207037A Demodulator
07/01/1986US4598251 Frequency to current converter circuit
05/1986
05/21/1986EP0181517A1 Demodulator for an asynchronous binary signal
04/1986
04/29/1986US4585960 Pulse width to voltage converter circuit
04/22/1986US4584691 Timed pulse communication system
04/22/1986US4584489 Multichannel time-voltage converter
03/1986
03/18/1986EP0112380A4 Frequency to current converter circuit.
02/1986
02/12/1986EP0170804A1 Phase difference demodulator
01/1986
01/21/1986US4565976 Interruptable voltage-controlled oscillator and phase-locked loop using same
09/1985
09/17/1985US4542371 Method of converting a digital signal into an analog signal and a converter therefor
08/1985
08/21/1985EP0151633A1 An interruptible voltage-controlled oscillator.
07/1985
07/24/1985EP0149577A2 Method for converting an analog signal into a pulse signal and inverse conversion method, conversion apparatus for implementing these methods, transmission systems and control and regulation systems comprising such apparatus
07/02/1985US4527276 Digital pulse position modulation communications system with threshold extension
06/1985
06/04/1985US4521736 Demodulator for pulse width modulated signals
05/1985
05/08/1985EP0140082A2 Electronic circuit for converting a pulse width into a proportional voltage
04/1985
04/09/1985US4510453 Frequency modulation or pulse modulation demodulator
02/1985
02/28/1985WO1985000941A1 An interruptible voltage-controlled oscillator
01/1985
01/29/1985US4496858 Frequency to voltage converter
07/1984
07/24/1984US4462051 Demodulator for an asynchronous binary signal
07/04/1984EP0112380A1 Frequency to current converter circuit.
07/03/1984US4458164 Frequency to voltage transducer
05/1984
05/01/1984US4446439 Frequency/voltage conversion circuit
03/1984
03/06/1984US4435682 Frequency demodulator employing a circuit having a delay varying with the received frequency
01/1984
01/25/1984EP0099265A1 Demodulator
01/17/1984US4426623 Ripple free amplitude demodulator
01/05/1984WO1984000087A1 Frequency to current converter circuit
12/1983
12/27/1983US4423498 Control apparatus for a recording medium drive motor in a digital information reproducing apparatus
12/06/1983US4419630 Phase demodulator utilizing a frequency divider, synchronous filter, and phase comparator
10/1983
10/26/1983EP0092258A2 Frequency-voltage converter
10/12/1983EP0091215A2 Demodulator for an asynchronous binary signal
10/04/1983US4408166 Pulse width modulation decoder
06/1983
06/21/1983US4389621 Phase locked loop stabilized against temperature and voltage variations
04/1983
04/27/1983EP0077332A1 Pulse width modulation decoder
01/1983
01/25/1983CA1140218A1 Phase discriminator
12/1982
12/28/1982US4366399 Frequency discrimination circuit
10/1982
10/12/1982US4353601 Vehicle skid control
09/1982
09/21/1982US4350957 Pulse counter-type FM detector
08/1982
08/17/1982US4345211 Digital phaselock demodulator
07/1982
07/13/1982CA1127724A1 Switching circuit with mos field effect transistor
07/08/1982WO1982002300A1 Pulse width modulation decoder
06/1982
06/29/1982CA1126865A1 Programmable digital tone detector
05/1982
05/18/1982US4330753 Method and apparatus for recovering a signal from a charge transfer device
03/1982
03/30/1982US4322712 Elevator speed detecting apparatus
01/1982
01/26/1982US4313065 Switching circuit with MOS field effect transistor
01/12/1982US4310831 Pulse width modulated, push/pull digital to analog converter
01/05/1982CA1115790A1 Mos fet amplifier
12/1981
12/30/1981EP0042641A1 Frequency demodulator using a delay circuit, the delay of which varies according to the received frequency
10/1981
10/27/1981US4297601 Monostable multivibrator circuit and FM detector circuit employing predetermined load resistance and constant current to increase response rate of differential transistor pair
10/20/1981CA1111139A1 Receive amplifier for pam signals
09/1981
09/29/1981US4292595 Capacitance coupled isolation amplifier and method
09/29/1981US4292549 Monostable multivibrator and FM detector circuit employing differential transistor pair (threshold) trigger circuit to avoid interference signal operation
08/1981
08/18/1981US4284956 Wide dynamic range pulse to pulse rate converter
08/04/1981US4282490 Pulse count type FM demodulator circuit
07/1981
07/14/1981CA1105141A2 Markov processor for context encoding from given characters and for character decoding from given contexts
06/1981
06/23/1981US4275359 MOS FET Amplifier
04/1981
04/14/1981US4262220 Optical current isolator circuit
12/1980
12/09/1980US4238831 Pulse interpolation method and apparatus
09/1980
09/30/1980US4225796 Frequency-to-current conversion circuit
08/1980
08/05/1980US4216463 Programmable digital tone detector
07/1980
07/29/1980US4215315 Low frequency signal period or ratio (period)-to-voltage converter
05/1980
05/20/1980US4204173 Tuning circuit with provisions for reducing pulse width jitter
05/20/1980US4204171 Filter which tracks changing frequency of input signal
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