IPC Subgroup
H04N 25/71 Charge-coupled device [CCD] sensors; Charge-transfer registers specially adapted for CCD sensors
Introduced: January 2023
Full Title
Circuitry of solid-state image sensors [SSIS]; Control thereof > SSIS architectures; Circuits associated therewith > Charge-coupled device [CCD] sensors; Charge-transfer registers specially adapted for CCD sensors
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- PICTORIAL COMMUNICATION, e.g. TELEVISION
7 direct subcodes
Child Classifications
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- H04N 25/711 Time delay and integration [TDI] registers; TDI shift registers
- H04N 25/713 Transfer or readout registers; Split readout registers or multiple readout registers
- H04N 25/715 using frame interline transfer [FIT]
- H04N 25/72 using frame transfer [FT]
- H04N 25/73 using interline transfer [IT]
- H04N 25/74 Circuitry for scanning or addressing the pixel array
- H04N 25/75 Circuitry for providing, modifying or processing image signals from the pixel array
Top Applicants
Top 10 applicants by patent filingsfor class H04, 2013–2023, worldwide · Source: EPO PATSTAT
- QUALCOMM US 97,396
- HUAWEI TECHNOLOGIES COMPANY CN 96,502
- SAMSUNG ELECTRONICS COMPANY KR 86,981
- TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 55,869
- HUAWEI TECHNOLOGIES COMPANY 55,349
- LG ELECTRONICS KR 53,649
- CANON 33,341
- SONY CORPORATION JP 32,761
- ZTE CORPORATION CN 32,274
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 28,327