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Browse by Category: Main > Electrical & Energy
Class Information
Number: 327/159
Name: Miscellaneous active electrical nonlinear devices, circuits, and systems > Signal converting, shaping, or generating > Synchronizing > With feedback > Phase lock loop > With digital element
Description: Subject matter including a device performing Boolean algebra operations.










Patents under this class:
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Patent Number Title Of Patent Date Issued
6456164 Sigma delta fractional-N frequency divider with improved noise and spur performance Sep. 24, 2002
6456132 Phase-locked loop circuit Sep. 24, 2002
6456131 Charge mirror circuit Sep. 24, 2002
6449728 Synchronous quad clock domain system having internal and external sample logic units matching internal and external sample signatures to a pattern corresponding to a synchronous multiple ratio Sep. 10, 2002
6445233 Multiple time constant rectifier apparatus and method Sep. 3, 2002
6441660 High speed, wide bandwidth phase locked loop Aug. 27, 2002
6441661 PLL circuit Aug. 27, 2002
6441667 Multiphase clock generator Aug. 27, 2002
6429707 Reference signal switchover clock output controller Aug. 6, 2002
6424228 Stabilized phase lock detection circuits and methods of operation therefor Jul. 23, 2002
6420917 PLL loop filter with switched-capacitor resistor Jul. 16, 2002
6417738 Adaptive frequency-hopping oscillators Jul. 9, 2002
6415008 Digital signal multiplier Jul. 2, 2002
6411141 PLL circuit Jun. 25, 2002
6407641 Auto-locking oscillator for data communications Jun. 18, 2002
6407642 Frequency detector and phase-locked loop circuit including the detector Jun. 18, 2002
6407643 Phase-locked loop enabling the generation of a reference signal having a high spectral purity Jun. 18, 2002
6404249 Phase-locked loop circuit and frequency modulation method using the same Jun. 11, 2002
6404291 Linear low noise phase loop frequency synthesizer using controlled divider pulse widths Jun. 11, 2002
6396353 PLL frequency synthesizer operated with reduced settling time constant during frequency changeover May. 28, 2002
6392493 Fractional-N frequency synthesizer May. 21, 2002
6392494 Frequency comparator and clock regenerating device using the same May. 21, 2002
6388536 Method and apparatus for providing coarse and fine tuning control for synthesizing high-frequency signals for wireless communications May. 14, 2002
6388483 Semiconductor integrated circuit device and microcomputer May. 14, 2002
6388531 Voltage controlled oscillator with reduced parasitic interference May. 14, 2002
6388480 Method and apparatus for reducing the lock time of DLL May. 14, 2002
6389090 Digital clock/data signal recovery method and apparatus May. 14, 2002
6384650 Digital phase locked loop circuit May. 7, 2002
6377127 Phase locked loop circuit Apr. 23, 2002
6373306 Clock generator with programmable two-tone modulation for EMI reduction Apr. 16, 2002
6373305 Digital receive phase lock loop with residual phase error and cumulative phase error correction Apr. 16, 2002
6369660 Circuit and method for preventing runaway in a phase lock loop Apr. 9, 2002
6369624 Programmable phase shift circuitry Apr. 9, 2002
6366174 Method and apparatus for providing a clock generation circuit for digitally controlled frequency or spread spectrum clocking Apr. 2, 2002
6366135 Data frequency detector Apr. 2, 2002
6362670 Controlled slew reference switch for a phase locked loop Mar. 26, 2002
6359519 Self-timed numerically controlled ring oscillator Mar. 19, 2002
6359483 Integrated circuit clock distribution system Mar. 19, 2002
6356158 Phase-locked loop employing programmable tapped-delay-line oscillator Mar. 12, 2002
6353348 Phase locked loops including analog multiplier networks that can provide constant loop bandwidth Mar. 5, 2002
6351154 Phase detector Feb. 26, 2002
6351191 Differential delay cell with common delay control and power supply Feb. 26, 2002
6348823 Digital controlled oscillating circuit of digital phase lock loops Feb. 19, 2002
6337589 Phase-lock loop with independent phase and frequency adjustments Jan. 8, 2002
6333896 Delay locked loop for use in synchronous dynamic random access memory Dec. 25, 2001
6331795 Lock determination circuit of PLL for pulling up intermediate electric potential of lock determination gate Dec. 18, 2001
6330296 Delay-locked loop which includes a monitor to allow for proper alignment of signals Dec. 11, 2001
6329855 Frequency synthesizer Dec. 11, 2001
6326851 Digital phase-domain PLL frequency synthesizer Dec. 4, 2001
6320436 Clock skew removal apparatus Nov. 20, 2001

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