Patents for H03L 7 - Automatic control of frequency or phase; Synchronisation (37,643)
05/1979
05/31/1979WO1979000281A1 Atomic beam instrument
05/29/1979US4156855 Phase-locked loop with variable gain and bandwidth
05/22/1979US4156205 Binary frequency synthesizer
05/22/1979US4156204 Voltage controlled oscillator with frequency and phase control loop
05/22/1979US4156196 Memory scanning radio receiver with separate channel data selection
05/22/1979CA1055124A1 Frequency synthesizer
05/15/1979US4155105 Write clock signal generator for use with rotating magnetic memory systems
05/15/1979US4155050 Loop phase detector circuit
05/15/1979US4155049 Automatic frequency control circuit for television horizontal oscillator
05/08/1979US4153884 Frequency synthesizer for transmitter/receiver using a phase locked loop
05/08/1979US4153876 Charge transfer device radio system
05/08/1979CA1054232A1 Phase detector having a 360.degree. linear range for periodic and aperiodic input pulse streams
05/01/1979US4152669 Phase locked loop with means for preventing locking at undesired frequencies
04/1979
04/24/1979US4151485 Digital clock recovery circuit
04/24/1979US4151473 Phase detector circuit
04/24/1979US4151463 Phase locked loop indicator
04/17/1979CA1052870A1 Electronic signal processing system
04/10/1979US4149125 Frequency synthesizer for transmitter receiver using a phase locked loop
04/03/1979US4147993 Electrical signal generators
04/03/1979US4147984 Dual digital processor transceiver
04/03/1979CA1051983A1 Automatic frequency corrector in differential phase modulation__
03/1979
03/27/1979US4146848 Frequency stabilizing system and method for beam type device
03/27/1979US4146843 Phase synchronizing arrangement for video synchronous detection
03/27/1979CA1051528A1 Data recovery system resistant to frequency deviations
03/27/1979CA1051527A1 Timing recovery circuit for digital data
03/20/1979US4145667 Phase locked loop frequency synthesizer using digital modulo arithmetic
03/20/1979US4145663 Digital synchronous detectors using time division for extracting carrier wave and demodulated signals
03/20/1979US4145656 Transceiver capable of sensing a clear channel
03/20/1979US4145655 Digitally transmitting transceiver
03/20/1979CA1051098A1 Wideband phase locked loop transmitter system
03/13/1979US4144579 Arithmetic synthesizer frequency generation with reduced phase jitter
03/06/1979US4143328 Digital phase lock loop circuit and method
02/1979
02/27/1979US4142158 Frequency selection receiver with variable time constant control loop
02/20/1979US4140975 Highly selective programmable filter module
02/20/1979CA1049165A1 Electronic automatic frequency tuning system
02/20/1979CA1049151A1 Method and apparatus for synchronizing master and local time base systems
02/13/1979US4139823 Electrical energy transmission network
02/06/1979US4138679 Circuit for synchronizing the oscillation of a pulsed oscillator with a reference oscillation
02/06/1979US4138650 Phase lock loop
02/06/1979CA1048112A1 Precision test frequency generator
01/1979
01/30/1979US4137508 Channel selection system for a displaced spectrum frequency synthesizer
01/30/1979US4137505 Method of and apparatus for frequency control
01/30/1979US4137499 Signal strength measuring transceiver
01/30/1979CA1047614A1 Start-stop transistor colpitts oscillator circuit
01/23/1979US4136289 Phase control circuit and oscillator circuit using it
01/23/1979CA1047126A1 Phase-locked loop having a slight phase offset error
01/16/1979US4135191 Coherent demodulator
01/16/1979US4135166 Master timing generator
01/16/1979US4135165 Phase-locked loop oscillator
01/16/1979US4135164 Synchronous generating circuit devices with two phase-locked loops and feedback around both
01/16/1979US4135163 Phase regulating circuit for controlling spaced pulse sequences
01/16/1979CA1046593A1 Phase and/or frequency comparators with extended phase detection range
01/16/1979CA1046586A1 Stabilization of laser output
01/09/1979US4134081 Clock circuit for use in pulse-echo ultrasonic defect testing
01/09/1979US4133323 Control trigger generating system, particularly to generate a trigger signal used in internal combustion engines, such as an ignition or fuel injection trigger signal
01/02/1979US4132951 Digital processor controlled radio system
01/02/1979US4132950 Clarifying radio receiver
01/02/1979CA1045689A1 Phase locked loop for use with local oscillator
12/1978
12/26/1978US4131862 Phase lock loop with narrow band lock-in and wideband acquisition characteristics
12/26/1978US4131861 Variable frequency oscillator system including two matched oscillators controlled by a phase locked loop
12/26/1978US4131856 Electrical synchronizing circuits
12/19/1978US4130808 Phase lock stabilized swept frequency signal source
12/19/1978CA1044765A1 Broadcast receiver
12/12/1978US4129748 Phase locked loop for providing continuous clock phase correction
12/12/1978CA1044339A1 Band pass filter circuit
12/05/1978US4128811 Frequency indicating circuit
11/1978
11/28/1978US4127866 Reference signal generator
11/21/1978US4126831 Electronic phase detector circuit
11/21/1978CA1042990A1 Radio receiver with a phase locked loop for a demodulator
11/14/1978US4125817 Method for stabilizing the mean-frequency and modulation slope of a phase-keyed oscillator
11/14/1978US4125815 Phase lock loop indicator
10/1978
10/31/1978US4123726 Circuit for synchronizing the oscillation of an oscillator keyed by a pulse, with a reference oscillation
10/31/1978US4123725 Phase locked loop system
10/31/1978US4123724 Communication equipment
10/24/1978US4122501 System for recording and reading back data on a recording media
10/24/1978US4122488 Sync signal generator with memorization of phase detection output
10/24/1978US4122408 Frequency stabilization utilizing multiple modulation
10/24/1978US4122405 Digital logic level signal indication of phase and frequency lock condition in a phase-locked loop
10/24/1978US4122404 Combination phase detector voltage doubler and low-pass filter for use on a phase-lock loop
10/24/1978CA1041238A1 Electronic automatic frequency tuning system
10/24/1978CA1041237A1 Electronic system for automatically tuning to a selected television channel
10/24/1978CA1041185A1 Channel selection system for a displaced spectrum frequency synthesizer
10/17/1978US4121243 Color subcarrier generator
10/17/1978US4121213 Radar altimeter simulator
10/17/1978US4121173 Arrangement for automatically controlling the frequency of a hyperfrequency generator feeding a resonant element subjected to fluctuations in temperature
10/17/1978US4121172 Dual loop phase locked oscillator system
10/17/1978US4121171 Filtering circuit for a phase-locked loop
10/17/1978US4121170 Tunable oscillator with high stability and accurate frequency
10/17/1978US4121166 Phase synchronizing circuit for demodulation of multi-phase PSK signals
10/17/1978US4121162 Digital phase locked loop tuning system
10/17/1978CA1040766A1 Tuner with digitally coded indicia
10/10/1978US4119910 Method and apparatus for detecting whether phase difference between two signals is constant
10/10/1978CA1040331A1 Channel selection system for tv receiver set
10/03/1978US4118674 Phase locked loop including active lowpass filter
10/03/1978US4118673 Phase lock loop controlled offset local oscillator system
09/1978
09/26/1978US4117420 Phase-locked loop with switchable loop filter
09/26/1978US4117419 Frequency measuring system employing an auto-correlation function frequency control loop
09/26/1978US4117407 Frequency synthesizer tuner
09/26/1978US4117405 Narrow-band radio communication system
09/19/1978US4115745 Phase lock speed-up circuit