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)
Additional Content IPC
Circuits for comparing the phase or frequency of two mutually-independent oscillations Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
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
Top Applicants
Top Applicants (IPC)
Class H03,2013–2023, worldwide · Source: EPO PATSTAT
- QUALCOMM US 5,625
- SAMSUNG ELECTRONICS COMPANY KR 5,496
- MURATA MANUFACTURING COMPANY JP 5,478
- HUAWEI TECHNOLOGIES COMPANY CN 3,383
- INTEL CORPORATION US 3,091
- TEXAS INSTRUMENTS US 3,070
- MURATA MANUFACTURING COMPANY 2,722
- SKYWORKS SOLUTIONS US 2,290
- SEIKO EPSON CORPORATION 2,177
- IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 2,158
Top Applicants (CPC)
Class H03,2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG ELECTRONICS COMPANY KR 7,293
- QUALCOMM US 7,085
- MURATA MANUFACTURING COMPANY JP 5,982
- HUAWEI TECHNOLOGIES COMPANY CN 4,641
- INTEL CORPORATION US 3,863
- TEXAS INSTRUMENTS US 3,409
- MURATA MANUFACTURING COMPANY 2,874
- SK HYNIX KR 2,644
- SKYWORKS SOLUTIONS US 2,545
- IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 2,437