IPC Subgroup
H03M 1/12 Analogue/digital converters
Introduced: January 1985
Last revised: January 2006
Full Title
Analogue/digital conversion; Digital/analogue conversion > Analogue/digital converters
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRONIC CIRCUITRY
- Subclass:
- CODING, DECODING OR CODE CONVERSION, IN GENERAL
Related Keywords
electric ANALOGUE-DIGITAL converters
9 direct subcodes
Child Classifications
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- H03M 1/14 Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit
- H03M 1/18 Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging
- H03M 1/2 Increasing resolution using an n bit system to obtain n + m bits, e.g. by dithering
- H03M 1/22 pattern-reading type
- H03M 1/34 Analogue value compared with reference values
- H03M 1/48 Servo-type converters
- H03M 1/5 with intermediate conversion to time interval
- H03M 1/6 with intermediate conversion to frequency of pulses
- H03M 1/64 with intermediate conversion to phase of sinusoidal signals
Top Applicants
Top 10 applicants by patent filingsfor 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