| Patents for H03B 28 - Generation of oscillations by methods not covered by groups , including modification of the waveform to produce sinusoidal oscillations (1,097) |
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| 05/06/1987 | EP0220932A2 A multiphase frequency selective phase locked loop with multiphase sinusoidal and digital outputs |
| 04/08/1987 | EP0216803A1 Digital zero-if selectivity section. |
| 04/07/1987 | US4656428 Distorted waveform signal generator |
| 03/11/1987 | EP0213846A2 Waveform generation method |
| 03/11/1987 | EP0213822A2 Signal generators |
| 03/10/1987 | US4649467 High efficiency MOSFET sine wave generator |
| 02/25/1987 | EP0211796A2 High efficiency mosfet sine wave generator |
| 01/17/1987 | CN85101664A 调谐振荡器 Tuned oscillator |
| 01/14/1987 | EP0208141A2 Waveform generators |
| 01/07/1987 | EP0207819A1 Non-piezoelectric resonator with a high Q factor |
| 01/06/1987 | US4635279 Arrangement for coherently generating sinusoids of different frequencies, and angle modulation data receiver using the arrangement |
| 01/06/1987 | US4634940 Sine wave deflection circuit for bidirectional scanning of a cathode ray tube |
| 12/10/1986 | EP0204570A2 Digital mixing apparatus |
| 12/02/1986 | US4626796 Digital apparatus and method for programmably phase shifting an audio tone |
| 12/02/1986 | CA1214830A1 Stable sine wave generator |
| 10/28/1986 | US4620314 Method of generating an approximately sinusoidal signal and circuit arrangement for implementing this method, particularly in a stereo demodulator |
| 10/28/1986 | US4620162 Tunable triangle wave generator with two-phase sinusoidal outputs |
| 10/21/1986 | US4618851 Apparatus for reproducing signals pre-stored in a memory |
| 10/09/1986 | WO1986005936A1 Digital zero-if selectivity section |
| 10/01/1986 | CN86101766A Digital zero-if selectivity section |
| 08/14/1986 | WO1986004702A1 Electrical waveform generator means and methods |
| 07/02/1986 | EP0186073A2 Driver circuit |
| 07/01/1986 | US4598212 Driver circuit |
| 06/11/1986 | EP0184018A2 Demodulator for a digital receiver |
| 04/22/1986 | US4584658 Stable sine wave generator |
| 04/01/1986 | CA1202741A1 Ringing signal generator employing delta modulation power amplification techniques |
| 01/22/1986 | EP0168969A1 A method and digital circuit for generating an approximate sinusoidal waveform |
| 01/07/1986 | US4563548 Method and circuit for telephone dialing signal generation |
| 11/06/1985 | EP0160484A2 FM receiver including a baseband PLL circuit |
| 10/16/1985 | EP0158538A2 Method and circuit for generating a time varying signal |
| 06/18/1985 | US4524326 Digitally-driven sine/cosine generator and modulator |
| 04/17/1985 | EP0137368A1 Function generator |
| 03/27/1985 | EP0135437A1 Sinusoidal signal generator, the frequency of which is dependent upon a binary signal, in particular for a modem |
| 03/19/1985 | US4506228 Digital FM detector |
| 02/19/1985 | US4500844 Ringing signal generator employing delta-modulation power amplification techniques |
| 02/05/1985 | USRE31821 Variable function generator |
| 01/15/1985 | US4494014 Analogue current switch bipolar injection technology |
| 01/15/1985 | CA1181137A1 Analogue current switch using bipolar injection technology |
| 12/06/1984 | WO1984004857A1 Ringing signal generator |
| 11/13/1984 | US4482974 Apparatus and method of phase-to-amplitude conversion in a sine function generator |
| 10/31/1984 | EP0123333A2 Method of generating an approximate sine-wave signal and circuitry for carrying it out, especially for a stereo demodulator |
| 10/09/1984 | US4476536 Digital sine wave synthesizing method and apparatus |
| 06/12/1984 | US4454486 Waveform synthesis using multiplexed parallel synthesizers |
| 04/17/1984 | CA1165824A1 Pulsed sine wave oscillating circuit arrangement |
| 03/14/1984 | EP0102784A2 Method and apparatus for sine function generation |
| 11/08/1983 | CA1156765A1 Digital frequency synthesizer |
| 10/18/1983 | US4410954 Digital frequency synthesizer with random jittering for reducing discrete spectral spurs |
| 09/07/1983 | EP0087994A1 Programmable digital generator |
| 07/26/1983 | US4395642 Sine-shaping circuit |
| 06/29/1983 | EP0082335A2 Digital sine wave synthesizing method and apparatus |
| 06/21/1983 | US4389621 Phase locked loop stabilized against temperature and voltage variations |
| 06/01/1983 | EP0080014A2 Digital demodulator for frequency-modulated signals |
| 05/18/1983 | EP0078857A1 Digital amplitude modulating circuitry |
| 05/11/1983 | EP0078588A1 Method and apparatus for signal synthesis |
| 01/19/1983 | EP0070063A1 Function generator using analogue current switch in bipolar injection technology |
| 09/07/1982 | US4348734 Converter by stored switching pattern |
| 06/15/1982 | CA1125852A1 Waveform synthesizer |
| 05/25/1982 | US4331941 Digital phase domain amplitude modulation method and apparatus |
| 05/18/1982 | CA1123908A1 Circuit arrangement for generating a pulse-width modulated signal |
| 05/04/1982 | US4328525 Pulsed sine wave oscillating circuit arrangement |
| 04/14/1982 | EP0049320A1 Digital frequency synthesizer |
| 01/06/1982 | EP0042936A1 Pulsed sine wave oscillating circuit |
| 01/05/1982 | US4308779 Control waveform generators for electronic musical instruments |
| 09/09/1981 | EP0035166A1 Digital receiver |
| 08/25/1981 | US4286316 High voltage sine wave power supply |
| 07/28/1981 | CA1106088A1 Digitally synthesized touch-tone audio signal generator |
| 07/07/1981 | CA1104661A1 Square wave/sine wave conversion |
| 05/20/1981 | EP0028743A1 Circuit for generating a sine wave from a triangular wave |
| 04/08/1981 | EP0026442A1 Circuit arrangement for generating a low-noise high-frequency output oscillation |
| 02/17/1981 | CA1095983A1 Direct digital technique for generating an ac waveform |
| 02/10/1981 | US4250455 Square wave/sine wave conversion |
| 08/12/1980 | CA1083719A1 Digital processor for selectively synthesizing sinusoidal waveforms say suitable for testing geophones or combinations of geophones of a geophysical data acquisition system |
| 02/19/1980 | US4189669 Circuit arrangement for generating a pulse-width modulated signal |
| 01/29/1980 | CA1070838A1 Digital multitone generator for telephone dialing |
| 01/22/1980 | CA1070430A1 Method and apparatus for generating digital dual frequency signals |
| 09/25/1979 | CA1063186A1 Recursive detector-oscillator circuit |
| 02/27/1979 | US4142245 Multi-frequency digital wave synthesizer for providing analog output signals |
| 02/27/1979 | US4142184 Digital multitone generator for telephone dialing |
| 02/27/1979 | CA1049670A1 Multitone pushbutton dial phase shift scanning circuitry |
| 02/06/1979 | CA1048112A1 Precision test frequency generator |
| 01/30/1979 | US4137570 Waveform synthesizer |
| 01/23/1979 | US4135424 Variable function generator |
| 01/02/1979 | US4132871 Digitally synthesized multi-frequency signal generator |
| 08/08/1978 | US4105939 Direct digital technique for generating an AC waveform |
| 12/06/1977 | US4061886 Dual tone multiple frequency generator |
| 11/15/1977 | US4058805 Digital multitone generator for telephone dialing |
| 08/23/1977 | US4044310 Circuitry for generating a sine wave and/or cosine wave from a pulse signal |
| 08/02/1977 | US4039806 Synthesizer for testing elements of a geophysical data acquisition system |
| 07/12/1977 | US4035733 Pulse signal conditioning circuit |
| 02/08/1977 | US4007459 Multitone pushbutton dial phase shift scanning circuitry |
| 11/30/1976 | US3995222 Sinusoidal waveform generator |
| 11/16/1976 | US3992680 Precision test frequency generator |
| 10/12/1976 | US3985966 Method and apparatus for generating digital dual frequency signals |
| 07/27/1976 | US3971998 Recursive detector-oscillator circuit |
| 06/01/1976 | US3961206 Non linear network converting bipolar sawtooth signal into sinewave signal |
| 05/25/1976 | US3959604 Digital calling signal tone generating circuitry |
| 02/17/1976 | US3938394 Combination balance analyzer and vibration spectrum analyzer |