H03L 7/085 concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal (H03L7/10 takes precedence; circuits for comparing the phase or frequency of two mutually-independent oscillations H03D13/00)
Introduced: January 1990
Title
Titles differ between systems:
IPC: concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
CPC: concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal (H03L7/10 takes precedence; circuits for comparing the phase or frequency of two mutually-independent oscillations H03D13/00)
Full Title
Full titles differ between systems:
Automatic control of frequency or phase; Synchronisation > using a reference signal applied to a frequency- or phase-locked loop > Details of the phase-locked loop > concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
Automatic control of frequency or phase; Synchronisation > using a reference signal applied to a frequency- or phase-locked loop > Details of the phase-locked loop > concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal (H03L7/10 takes precedence; circuits for comparing the phase or frequency of two mutually-independent oscillations H03D13/00)
IPC and CPC are identically structured here. All 6 subcodes exist in both systems.
4 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1990.
Child Classifications
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- H03L 7/087 using at least two phase detectors or a frequency and phase detector in the loop since 1990 IPC+CPC Available in IPC and CPC
- H03L 7/089 the phase or frequency detector generating up-down pulses (H03L7/087 takes precedence) since 1990 +1 CPC IPC+CPC Available in IPC and CPC
- H03L 7/091 the phase or frequency detector using a sampling device (H03L7/087 takes precedence) since 1990 IPC+CPC Available in IPC and CPC
- H03L 7/093 using special filtering or amplification characteristics in the loop (H03L7/087 - H03L7/091 take precedence) since 1990 IPC+CPC Available in IPC and CPC
- H03L 7/095 using a lock detector (H03L7/087 takes precedence) since 1990 IPC+CPC Available in IPC and CPC
- H03L 7/097 using a comparator for comparing the voltages obtained from two frequency to voltage converters since 1990 IPC+CPC Available in IPC and CPC