Character recognition

Introduced: January 2022

Full Title

Full titles differ between systems:

IPC:

Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition > Character recognition

CPC:

Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition (scanning, transmission or reproduction of documents or the like H04N1/00) > Character recognition

Additional Content IPC

digital ink (also referred to as electronic ink or e-ink) digital ink electronic ink e-ink Technology that digitally represents handwriting, e.g. using a finger or a stylus, in its natural form using temporal information. Digital ink may also be referred to as electronic ink or e-ink.

IPC and CPC are identically structured here. All 13 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2022.

Child Classifications

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G06V 30/12 Detection or correction of errors, e.g. by rescanning the pattern since 2022 +2 CPC IPC+CPC Available in IPC and CPC
G06V 30/14 Image acquisition since 2022 +6 CPC IPC+CPC Available in IPC and CPC
G06V 30/16 Image preprocessing since 2022 +2 CPC IPC+CPC Available in IPC and CPC
G06V 30/18 Extraction of features or characteristics of the image since 2022 +9 CPC IPC+CPC Available in IPC and CPC
G06V 30/19 Recognition using electronic means since 2022 +3 CPC IPC+CPC Available in IPC and CPC
G06V 30/199 Arrangements for recognition using optical reference masks, e.g. holographic masks since 2022 IPC+CPC Available in IPC and CPC
G06V 30/20 Combination of acquisition, preprocessing or recognition functions since 2022 IPC+CPC Available in IPC and CPC
G06V 30/22 characterised by the type of writing since 2022 IPC+CPC Available in IPC and CPC
G06V 30/24 characterised by the processing or recognition method (segmentation of character regions G06V30/148) since 2022 +1 CPC IPC+CPC Available in IPC and CPC
G06V 30/26 Techniques for post-processing, e.g. correcting the recognition result since 2022 IPC+CPC Available in IPC and CPC
G06V 30/28 specially adapted to the type of the alphabet, e.g. Latin alphabet since 2022 +2 CPC IPC+CPC Available in IPC and CPC
G06V 30/30 based on the type of data since 2022 IPC+CPC Available in IPC and CPC
G06V 30/32 Digital ink since 2022 +2 CPC IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class G06,2013–2023, worldwide · Source: EPO PATSTAT

SAMSUNG ELECTRONICS COMPANY KR 66,669
IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 62,313
MICROSOFT TECHNOLOGY LICENSING US 41,918
GOOGLE US 32,969
SGCC(STATE GRID CORPORATION OF CHINA) 30,822
INTEL CORPORATION US 30,010
TENCENT TECHNOLOGY (SHENZHEN) COMPANY 28,235
HUAWEI TECHNOLOGIES COMPANY CN 26,079
APPLE US 21,891
HUAWEI TECHNOLOGIES COMPANY 20,505

Top Applicants (CPC)

Class G06,2013–2023, worldwide · Source: EPO PATSTAT

SAMSUNG ELECTRONICS COMPANY KR 76,952
IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 62,841
MICROSOFT TECHNOLOGY LICENSING US 44,778
GOOGLE US 35,735
INTEL CORPORATION US 32,087
HUAWEI TECHNOLOGIES COMPANY CN 30,572
TENCENT TECHNOLOGY (SHENZHEN) COMPANY 25,023
APPLE US 23,482
SGCC(STATE GRID CORPORATION OF CHINA) 22,548
HUAWEI TECHNOLOGIES COMPANY 20,917