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| Number | Title | Issue Date |
| 7940130 | Frequency generator and method of frequency generation with multiple sampling phase detectors A device includes: a plurality of sampling phase detectors, each receiving a sampling signal and a VCO output signal and in response thereto outputting a beat signal representing a frequency and phase difference between the VCO output signal and the sampling signal;... | 05/10/2011 |
| 6390639 | Spread illuminating apparatus A cover portion 20 which covers a spot-like light source 8 is provided on the printed circuit board (FPC) 9, thereby giving electrical insulation from the surrounding. Therefore, even if a metallic frame is disposed close to the spot-like light source 8, ... | 05/21/2002 |
| 5294895 | Microwave oscillators and transmitters with frequency stabilization In addition to a first opening (11) forming a primary output from a waveguide cavity (10) of a microwave oscillator, a coupling aperture (12) in a reflective wall (32) provides a secondary output which does not degrade the performance or tuning characteri... | 03/15/1994 |
| 4940952 | Phase and frequency comparator circuit for phase locked loop A phase and frequency detector circuit includes both a phase comparator such as an exclusive-OR gate possessing high phase sensitivity, and a frequency-phase comparator that is sensitive to differences in frequency. The outputs of these circuits are combi... | 07/10/1990 |
| 4841257 | High-speed sampling phase detector for clock and data recovery system A high-speed sample and hold phase detector for clock and data recovery systems is provided with a differentiating circuit coupled to a source of coded input data signals to provide bi-level differentiated output sampling pulses which are applied to a hig... | 06/20/1989 |
| 4500853 | Oscillator phase lock system A phase-lock system including an oscillator providing a switching output that continuously switches between first and second states, a trigger circuit for inducing switching of the oscillator, a sensing circuit monitoring the switching output and providin... | 02/19/1985 |
| 4426627 | Phase-locked loop oscillator circuit utilizing a sub-loop with a second phase comparator A phase-locked loop oscillator circuit having a reference signal generator, a voltage-controlled oscillator and a phase comparator comprises a second phase comparator. The first phase comparator is supplied with an output of the reference signal generator... | 01/17/1984 |
| 4355288 | Frequency-stabilizing system for generator of microwave oscillations A carrier oscillation in the microwave range is stabilized by a sequence of timing pulses produced by a crystal-controlled reference oscillator whose cadence is an aliquot fraction of the nominal carrier frequency. The pulses are used to obtain two phase-... | 10/19/1982 |
| 4039967 | Phase-locked loop having a slight phase offset error A phase-locked loop circuit in which the phase offset error arising from imperfections in the balance of the phase comparator is reduced to a minimum by a special construction of the phase comparator. The quasi-static phase error of the loop is then reduc... | 08/02/1977 |
