Patents
Patents for H03L 1 - Stabilisation of generator output against variations of physical values, e.g. power supply (2,641)
04/1996
04/30/1996US5512864 Method and apparatus for compensating for neutron induced frequency shifts in quartz resonators
04/24/1996EP0686322A4 Method and apparatus for providing a modified temperature compensation signal in a tcxo circuit
04/24/1996CN1031678C Circuit of stable temprature poulsen-ar converter with heating unit which can be controlled from outside
04/03/1996EP0704976A1 Phase-locked loop control circuit and method
03/1996
03/12/1996US5499393 Receiver with function to adjust local frequency following reception frequency
03/12/1996CA2018264C Oscillator temperature compensating circuit using stored and calculated values
03/06/1996EP0699369A1 Apparatus and methods for improving timing recovery of a system clock
02/1996
02/28/1996EP0698313A1 Method for starting a radio transmitter and a radio transmitter
02/27/1996US5495208 Wide band tunable and modulatable reference oscillator
02/14/1996CN1116886A Method and apparatus for providing a modified temperature compensation signal in a TCXO circuit
02/13/1996US5491456 Oscillator compensated for improved frequency stability
02/08/1996WO1996003799A1 Temperature compensation type quartz oscillator
02/06/1996US5489821 Lamp oscillator for atomic frequency standards
01/1996
01/30/1996US5488333 Wireless thermally insulated crystal oscillator having power and signals coupled through transceivers
01/23/1996US5486786 Process monitor for CMOS integrated circuits
01/18/1996WO1996001524A1 Piezoelectric oscillator
01/16/1996US5485127 Integrated dynamic power dissipation control system for very large scale integrated (VLSI) chips
01/03/1996EP0690564A1 Method and apparatus for sensing common mode error
01/02/1996US5481229 Low power temperature compensated crystal oscillator
12/1995
12/14/1995WO1995034133A1 A method for controlling a phase-locked loop, and a phase-locked loop
12/13/1995EP0686322A1 Method and apparatus for providing a modified temperature compensation signal in a tcxo circuit
12/12/1995US5475325 Clock synchronizing circuit
12/05/1995US5473289 Temperature compensated crystal oscillator
11/1995
11/22/1995EP0683558A1 Method and apparatus for reducing power dissipation in an electronic device
11/22/1995EP0682827A1 Voltage controlled oscillator with efficient process compensation.
11/21/1995US5469120 High performance voltage controlled oscillator
11/15/1995EP0682412A1 Circuit with a composite transfer function
11/14/1995US5467059 Temperature-stabilized oscillator circuit having heating elements that can be externally influenced
10/1995
10/31/1995US5463352 Supply voltage tolerant phase-locked loop circuit
10/17/1995US5459436 Temperature compensated crystal oscillator with disable
10/12/1995WO1995027329A1 A tuning circuit
09/1995
09/28/1995WO1995022855A3 Apparatus and methods for improving timing recovery of a system clock
09/13/1995EP0671080A1 Temperature compensated oscillator circuit
08/1995
08/24/1995WO1995022855A2 Apparatus and methods for improving timing recovery of a system clock
08/15/1995US5442669 Perishable good integrity indicator
08/15/1995US5442325 Voltage-controlled oscillator and system with reduced sensitivity to power supply variation
08/08/1995US5440277 VCO bias circuit with low supply and temperature sensitivity
07/1995
07/19/1995EP0663647A2 Temperature phase shift circuit and coordinate input apparatus
06/1995
06/27/1995US5428319 Method and apparatus for providing a modified temperature compensation signal in a TCXO circuit
06/27/1995US5428315 Method of making radiation hardened quartz crystal oscillators
06/14/1995EP0658004A2 Digital temperature compensated crystal oscillator
06/13/1995US5424601 Temperature stabilized crystal oscillator
06/01/1995WO1995015031A1 Method and apparatus for providing a modified temperature compensation signal in a tcxo circuit
06/01/1995DE4441720A1 Vorrichtung zur Temperaturüberwachung A temperature monitoring device
06/01/1995DE4340583A1 Temperature-stabilised hybrid circuit
06/01/1995CA2151944A1 Method and apparatus for providing a modified temperature compensation signal in a tcxo circuit
05/1995
05/31/1995EP0655833A2 A temperature stable square wave oscillator
05/30/1995US5420550 Method and apparatus for sensing common mode error
05/04/1995DE4332439C1 Oscillator circuit for coin checker
04/1995
04/19/1995EP0635137A4 High temperature stabilized time base.
04/11/1995US5406231 Oscillator unit with improved frequency stability
02/1995
02/21/1995US5392005 Field calibration of a digitally compensated crystal oscillator over a temperature range
02/14/1995US5389899 Frequency synthesizer having quick frequency pull in and phase lock-in
01/1995
01/31/1995US5386201 Temperature stable square wave oscillator
01/25/1995EP0635137A1 High temperature stabilized time base
01/18/1995CN1027479C Temperature compensation of a crystal reference using direct digital synthesis
01/17/1995US5382922 Calibration systems and methods for setting PLL gain characteristics and center frequency
11/1994
11/24/1994WO1994027372A1 Method for starting a radio transmitter and a radio transmitter
11/17/1994EP0624288A1 Temperature compensation of a crystal reference using direct digital synthesis
10/1994
10/25/1994US5359303 FET oscillator using voltage and temperature compensated amplifier
10/25/1994US5359302 Self-regulating oscillator circuit and method
10/19/1994EP0374235B1 Phase-control circuit
10/18/1994US5357220 Emitter-coupled oscillator with differential switching control
10/11/1994US5355098 Phase-locked loop with memory storing control data controlling the oscillation frequency
09/1994
09/28/1994CN1092919A Circuit of stable temprature poulsen-ar converter with heating unit which can be controlled from outside
09/28/1994CN1092917A Circuit of poulsen-arc converter with accumulator for storage of information of characteristics of piezoelectric quartz
09/14/1994EP0615360A2 Clock synchronizing circuit
09/13/1994US5347558 Input frequency converter to increase input frequency range of a synchronous delay line
09/07/1994EP0614274A1 Oscillator
08/1994
08/31/1994EP0613252A2 A temperature compensated crystal oscillator
08/23/1994US5341112 Temperature stable oscillator circuit apparatus
08/18/1994WO1994018753A1 Voltage controlled oscillator with efficient process compensation
08/17/1994EP0611058A2 A current-controlled oscillator
08/03/1994EP0608681A1 Oscillator circuit with a memory for memorising characteristic information individual to the quartz vibrator
08/03/1994EP0608680A2 Temperature-stabilised oscillator circuit comprising heating elements acted on from the exterior
07/1994
07/30/1994CA2114363A1 Temperature-stabilized oscillator circuit having heating elements that can be externally influenced
07/30/1994CA2114360A1 Oscillator circuit having a memory that stores characteristic information of the individual oscillator crystal
07/26/1994US5332930 Phase locked loop circuitry with variable gain and bandwidth
07/19/1994US5331295 Voltage controlled oscillator with efficient process compensation
07/19/1994US5331292 Autoranging phase-lock-loop circuit
07/12/1994US5329255 Thermally compensating microwave cavity
06/1994
06/07/1994US5319324 Method of direct bonding of crystals and crystal devices
05/1994
05/31/1994US5317287 Low-gain, range programmable, temperature compensated voltage controlled ring oscillator
05/31/1994CA2025970C Shield case structure for an oscillator
05/26/1994WO1994011763A1 High temperature stabilized time base
05/26/1994CA2127809A1 High temperature stabilized time base
04/1994
04/13/1994EP0378635B1 Ultrastable oscillator operating at atmospheric pressure and in vacuo
03/1994
03/29/1994US5298870 Voltage controlled ring oscillator having differential amplifier stages
02/1994
02/17/1994WO1994003980A1 Temperature compensated oscillator circuit
02/17/1994CA2141055A1 Temperature compensated oscillator circuit
01/1994
01/26/1994EP0580209A1 Low-Gain, range programmable temperature compensated voltage controlled oscillator
01/11/1994US5278523 Temperature-stable tuned-circuit oscillator, especially in a proximity switch
11/1993
11/18/1993DE4209843A1 Temp. compensated oscillator circuit - stores tuning element setting signal and corresponding temp. signal during calibration phase for subsequent provision of correction signal
11/02/1993US5258725 Phase lock loop with compensation for voltage or temperature changes in a phase comparator
10/1993
10/27/1993EP0566586A1 An oscillator unit with improved frequency stability
10/05/1993US5250871 Low vibration sensitivity crystal resonator arrangement
09/1993
09/21/1993CA2063404C Voltage control oscillator with automatic current control
09/15/1993EP0560475A1 Method and apparatus for selecting optimum receiving frequency in a multichannel receiver
09/15/1993CN1076282A Temperature compensation of a crystal reference using direct digital synthesis
08/1993
08/31/1993US5241286 FET oscillator using voltage and temperature compensated amplifier
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