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Class Information
Number: 331/46
Name: Oscillators > Plural oscillators
Description: Subject matter comprising an electrical system including at least two significant oscillators.










Sub-classes under this class:

Class Number Class Name Patents
331/48 Adjustable frequency 107
331/50 Cascade or tandem connected 62
331/47 Oscillator used to vary amplitude or frequency of another oscillator 137
331/56 Parallel connected 199
331/49 Selectively connected to common output or oscillator substitution 276
331/55 Synchronized, triggered or pulsed 173


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

Patent Number Title Of Patent Date Issued
6900700 Communication semiconductor integrated circuit and radio communication system May. 31, 2005
6891444 Oscillator circuit for locking two or more LC-oscillators by mutual inductance coupling May. 10, 2005
6888416 Oscillator/mixer circuit having reduced area requirement when produced on a chip May. 3, 2005
6876263 Dual voltage-controlled oscillator structure with powder-down feature Apr. 5, 2005
6870432 Unilateral coupling for a quadrature voltage controlled oscillator Mar. 22, 2005
6870431 Oscillator having multi-phase complementary outputs Mar. 22, 2005
6870428 Mobile radio communications device having a PLL that phase locks with two crystal oscillators Mar. 22, 2005
6859109 Double-data rate phase-locked-loop with phase aligners to reduce clock skew Feb. 22, 2005
6850122 Quadrature oscillator and methods thereof Feb. 1, 2005
6847215 Electronic circuit for detecting a change relative to a quiescent condition Jan. 25, 2005
6842077 Voltage controlled oscillator for use in a phase locked loop Jan. 11, 2005
6838948 Oscillation apparatus and communication apparatus using the same Jan. 4, 2005
6831525 Oscillator arrangements with improved frequency stability Dec. 14, 2004
6828863 Multi-band frequency synthesizer for mobile terminals Dec. 7, 2004
6819189 Voltage-controlled oscillator having short synchronous pull-in time Nov. 16, 2004
6816023 Oscillator transmission and switching apparatus for a digital data processing system Nov. 9, 2004
6812799 Synchronous mirror delay (SMD) circuit and method including a ring oscillator for timing coarse and fine delay intervals Nov. 2, 2004
6812798 LC quadrature oscillator having coupling circuits Nov. 2, 2004
6788155 Low gain phase-locked loop circuit Sep. 7, 2004
6771725 Multi-pair gigabit ethernet transceiver Aug. 3, 2004
6766158 Harmonic cancellation mixer Jul. 20, 2004
6759909 RF energy dispersal in systems consisting of aggregated computing elements as subsystems Jul. 6, 2004
6753711 Digital summing phase-lock loop circuit with sideband control and method therefor Jun. 22, 2004
6750727 Low phase noise MOS LC oscillator Jun. 15, 2004
6724266 Device for producing a signal having a substantially temperature-independent frequency Apr. 20, 2004
6724267 Voltage controlled oscillator Apr. 20, 2004
6717478 Multi-phase voltage controlled oscillator (VCO) with common mode control Apr. 6, 2004
6717477 Circuit for controlling a non-conductive state of a USB interface Apr. 6, 2004
6707345 Oscillator frequency variation mechanism Mar. 16, 2004
6700452 Method and apparatus for producing high-frequency oscillations Mar. 2, 2004
6700434 Substrate bias voltage generating circuit Mar. 2, 2004
6686806 Ring VCO based on RC timing Feb. 3, 2004
6683504 Ring oscillator with random noise cancellation Jan. 27, 2004
6683503 Semiconductor integrated circuit having oscillators or oscillation circuits connected to a wiring line at connection points with intervals in length therebetween Jan. 27, 2004
6670857 Audio clock restoring apparatus and audio clock restoring method Dec. 30, 2003
6667665 Random number generator Dec. 23, 2003
6661298 Method and apparatus for a digital clock multiplication circuit Dec. 9, 2003
6661297 Multi-octave wideband voltage controlled oscillator Dec. 9, 2003
6650188 Coupling for LC-based VCO Nov. 18, 2003
6650189 Mobile device and method for the management of a standby mode in a mobile device of this kind Nov. 18, 2003
6614320 System and method of providing a programmable clock architecture for an advanced microcontroller Sep. 2, 2003
6566969 High frequency dual band output oscillator May. 20, 2003
6559727 High-frequency low-voltage multiphase voltage-controlled oscillator May. 6, 2003
6552622 Oscillator having reduced sensitivity to supply voltage changes Apr. 22, 2003
6538516 System and method for synchronizing multiple phase-lock loops or other synchronizable oscillators without using a master clock signal Mar. 25, 2003
6519963 Semiconductor equipment and refrigerator Feb. 18, 2003
6522210 Random pulse generator Feb. 18, 2003
6512420 Variable frequency oscillator utilizing selectively combined dual delay paths Jan. 28, 2003
6509803 Voltage-controlled oscillator having short synchronous pull-in time Jan. 21, 2003
6496078 Activating on-chip oscillator using ring oscillator Dec. 17, 2002

1 2 3 4 5 6 7










 
 
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