H03M 7/38 adaptive
Introduced: January 1985
Last revised: January 2006
Full Title
Conversion of a code where information is represented by a given sequence or number of digits to a code where the same information is represented by a different sequence or number of digits > Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction > Conversion to or from differential modulation with several bits, i.e. the difference between successive samples being coded by more than one bit > adaptive
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRONIC CIRCUITRY
- Subclass:
- CODING, DECODING OR CODE CONVERSION, IN GENERAL
Filing statistics
IPC H03M 7/38 belongs to the parent subclass H03M, which recorded 65,789 patent applications worldwide between 2013 and 2023. Annual filings grew from 5,414 in 2013 to 5,855 in 2023 (+8%), peaking at 6,860 applications in 2018. The most active applicants in class H03 are QUALCOMM (5,625 applications), SAMSUNG ELECTRONICS COMPANY (5,496 applications) and MURATA MANUFACTURING COMPANY (5,478 applications).
Source: EPO PATSTAT, worldwide filings
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