CPC Subgroup
H04N 13/106 Processing image signals (for multi-view video sequence encoding H04N19/597)
Full Title
Stereoscopic video systems; Multi-view video systems; Details thereof > Processing, recording or transmission of stereoscopic or multi-view image signals > Processing image signals (for multi-view video sequence encoding H04N19/597)
12 direct subcodes
Child Classifications
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- H04N 13/111 Transformation of image signals corresponding to virtual viewpoints, e.g. spatial image interpolation
- H04N 13/122 Improving the three-dimensional [3D] impression of stereoscopic images by modifying image signal contents, e.g. by filtering or adding monoscopic depth cues (H04N13/128 takes precedence)
- H04N 13/128 Adjusting depth or disparity
- H04N 13/133 Equalising the characteristics of different image components, e.g. their average brightness or colour balance
- H04N 13/139 Format conversion, e.g. of frame-rate or size
- H04N 13/144 for flicker reduction
- H04N 13/15 for colour aspects of image signals
- H04N 13/156 Mixing image signals
- H04N 13/161 Encoding, multiplexing or demultiplexing different image signal components (for multi-view video sequence encoding H04N19/597)
- H04N 13/167 Synchronising or controlling image signals
- H04N 13/172 image signals comprising non-image signal components, e.g. headers or format information
Top Applicants
Top 10 applicants by patent filingsfor class H04, 2013–2023, worldwide · Source: EPO PATSTAT
- HUAWEI TECHNOLOGIES COMPANY CN 101,476
- QUALCOMM US 101,139
- SAMSUNG ELECTRONICS COMPANY KR 96,655
- TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 57,744
- LG ELECTRONICS KR 55,253
- HUAWEI TECHNOLOGIES COMPANY 54,181
- SONY CORPORATION JP 35,309
- ZTE CORPORATION CN 32,950
- INTEL CORPORATION US 27,533
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION CN 27,498