222226 ⎘
Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop; Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for reducing the locking time interval
PLL with Lock-in Frequency Controller
#2PLL with phase range extension
#3Phase accumulator with improved accuracy
#4Apparatus for lock detection suitable for fractional-N frequency synthesizer and method thereof
#5Audio FM transmitter
#6Phase-locked loop (PLL)-based frequency synthesizer
#7Semiconductor device having DLL circuit
#8Hitless switching phase-locked loop
#9STATE SAVING CONTROL FOR GENERATING AT LEAST ONE OUTPUT SIGNAL
#10On-the-fly frequency switching while maintaining phase and frequency lock
#11Phase alignment circuit for a TDC in a DPLL
#12FRACTIONAL-N CONTROLLER WITH AUTOMATIC SWEPT FREQUENCY CHANGES
#13Phase lock loop indicator
#14Phase lock loop and operating method thereof
#15Method and apparatus to perform dynamic frequency scaling while a phase-locked loop operates in a closed loop
#16Failsafe clock product using frequency estimation
#17Delay adjustment using frequency estimation