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| Number | Title | Issue Date |
| 5517529 | UHF/L-Band monolithic direct digital receiver A monolithic direct digital UHF/L-Band receiver for receiving and processing a UHF/L-Band analog signal and deriving digitized samples, the receiver operating in a tuning frequency range centered at a center frequency and having a baseband frequency, a lo... | 05/14/1996 |
| 4740759 | Angle demodulator with second order interference prevention Angle demodulator having a signal input (I) for applying an angle-modulated input carrier (A) thereto, which demodulator is coupled to a phase detection arrangement (2) to which also a quadrature detection carrier (D) frequency-coupled with the input carr... | 04/26/1988 |
| 4580100 | Phase locked loop clock recovery circuit for data reproducing apparatus A data reproduction circuit, which can be used for reproducing audio data from an optical disc, includes a phase-locked loop which has a circuit for detecting polarity inversions of the input signal, a circuit for comparing the phases of a polarity invers... | 04/01/1986 |
| 4510453 | Frequency modulation or pulse modulation demodulator A demodulator for demodulating alternating signals modulated by pulse modulation, or by frequency modulation. The demodulator requires only a single constant current source, a single ramp voltage producing capacitor, and a sample-and-hold function. The in... | 04/09/1985 |
| 4390845 | Gated quadrature detector biased to switch on sinusoidal zero crossings A quadrature detector includes a driving circuit for applying a frequency modulated square-wave to one input of a gating circuit and to the input of a phase-shift network whose output is connected directly to the other input of the gating circuit. A track... | 06/28/1983 |
| 4201948 | Phase-locked loop clock pulse extraction circuit A circuit for extracting a clock pulse waveform from an input pulse waveform comprising a phase-locked loop including a phase comparator having a first input to which the input pulse waveform is supplied, a second input and an output which is coupled in c... | 05/06/1980 |
| 4191897 | Self-clocking circuit A circuit is disclosed for separating clock and data pulses contained in a pulse train resulting from reading a two frequency encoded magnetic recording. The subject invention obviates the previous requirements for sample and hold circuits and employs bip... | 03/04/1980 |
| 4083019 | Current controlled emitter coupled multivibrator A multivibrator circuit has a main constant current source through which the main portion of the current of the multivibrator circuit is supplied and a by-pass current source through which a portion of the current to be supplied to the main constant curre... | 04/04/1978 |
| 4072931 | Radio frequency alarm system including transmitting, coding and decoding circuitry At least one component of a transmitted RF alarm signal is repetitively shifted in frequency between at least first and second frequencies chosen from among a plurality of predetermined frequencies with such shifts in frequency occurring at a predetermine... | 02/07/1978 |
