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Class Information
Number: 327/12
Name: Miscellaneous active electrical nonlinear devices, circuits, and systems > Specific signal discriminating (e.g., comparing, selecting, etc.) without subsequent control > By phase > Comparison between plural inputs (e.g., phase angle indication, lead-lag discriminator, etc.) > With logic or bistable circuit
Description: Subject matter under 3 wherein the phase comparison (a) includes a device performing Boolean functions such as AND, OR, or exclusive-OR or (b) utilizes a device having two stable states.










Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8643402 Phase frequency detector circuit Feb. 4, 2014
8638144 Systems and methods involving phase detection with adaptive locking/detection features Jan. 28, 2014
8624630 Clock and data recovery system, phase adjusting method, and phasedetector Jan. 7, 2014
8604840 Frequency synthesizer noise reduction Dec. 10, 2013
8497708 Fractional-rate phase frequency detector Jul. 30, 2013
8487659 Comparator with adaptive timing Jul. 16, 2013
8483579 Phase detector circuit for clock and data recovery circuit and optical communication device having the same Jul. 9, 2013
8456210 Delay locked loop with offset correction Jun. 4, 2013
8432191 Phase-locked loop having high-gain mode phase-frequency detector Apr. 30, 2013
8415983 Digital phase comparator Apr. 9, 2013
8362817 Phase comparator and clock data recovery circuit Jan. 29, 2013
8248104 Phase comparator and phase-locked loop Aug. 21, 2012
8232821 Clock data recovery circuit Jul. 31, 2012
8207792 Phase locked loop and phase-frequency detector Jun. 26, 2012
8179163 Method and apparatus for charge pump linearization in fractional-N PLLs May. 15, 2012
8138800 Phase detecting circuit and PLL circuit Mar. 20, 2012
8138799 Inter-phase skew detection circuit for multi-phase clock, inter-phase skew adjustment circuit, and semiconductor integrated circuit Mar. 20, 2012
8081013 Digital phase and frequency detector Dec. 20, 2011
8058915 Digital phase-locked loop and digital phase-frequency detector thereof Nov. 15, 2011
8026742 Phase detector Sep. 27, 2011
8013641 Frequency synthesizer including a digital lock detector Sep. 6, 2011
8008946 Semiconductor integrated circuit Aug. 30, 2011
8008947 Balanced phase detector Aug. 30, 2011
7983361 Clock data recovery circuit Jul. 19, 2011
7969202 Fractional-N frequency synthesizer Jun. 28, 2011
7965143 Digital phase detector and phase-locked loop Jun. 21, 2011
7965108 Frequency synthesizer Jun. 21, 2011
7956658 Digital lock detector and frequency synthesizer using the same Jun. 7, 2011
7940088 High speed phase frequency detector May. 10, 2011
7920119 Drive circuit for electro-optical apparatus, method of driving electro-optical apparatus, electro-optical apparatus, and electronic system Apr. 5, 2011
7919992 Charge recycling amplifier for a high dynamic range CMOS imager Apr. 5, 2011
7919991 Comparator circuit Apr. 5, 2011
7893724 Method and circuit for rapid alignment of signals Feb. 22, 2011
7893725 Delay locked loop circuit Feb. 22, 2011
7889012 System and method for cycle slip prevention in a frequency synthesizer Feb. 15, 2011
7885361 Method and apparatus for 0/180 degree phase detector Feb. 8, 2011
7855580 Phase comparator, phase synchronizing circuit, and phase-comparison control method Dec. 21, 2010
7847641 Digital phase and frequency detector Dec. 7, 2010
7839178 High speed digital phase/frequency comparator for phase locked loops Nov. 23, 2010
7839179 Balanced phase detector Nov. 23, 2010
7830190 Data latch circuit with a phase selector Nov. 9, 2010
7821301 Method and apparatus for measuring and compensating for static phase error in phase locked loops Oct. 26, 2010
7795925 Phase difference detector and phase difference detection method Sep. 14, 2010
7791378 Phase detector Sep. 7, 2010
7769121 Phase detector for data communications Aug. 3, 2010
7764759 Linear sample and hold phase detector for clocking circuits Jul. 27, 2010
7764088 Frequency detection circuit and detection method for clock data recovery circuit Jul. 27, 2010
7760030 Phase detection circuit and method thereof and clock recovery circuit and method thereof Jul. 20, 2010
7755397 Methods and apparatus for digital phase detection with improved frequency locking Jul. 13, 2010
7755402 Calibration of separate delay effects for multiple data strobe signals Jul. 13, 2010

1 2 3 4 5 6 7 8 9










 
 
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