H04N 1/46
Colour picture communication systems
H04N1/46 (Colour picture communication systems) appears on 15,166 US grants and 12,875 published applications in this corpus.
Search patents in H04N- Granted patents
- 15,166
- Published applications
- 12,875
- Assignees
- 1,870
- Inventors
- 16,405
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 15 | 0 |
| 1978 | 10 | 0 |
| 1979 | 4 | 0 |
| 1980 | 16 | 0 |
| 1981 | 24 | 0 |
| 1982 | 26 | 0 |
| 1983 | 36 | 0 |
| 1984 | 46 | 0 |
| 1985 | 51 | 0 |
| 1986 | 61 | 0 |
| 1987 | 130 | 0 |
| 1988 | 99 | 0 |
| 1989 | 150 | 0 |
| 1990 | 179 | 0 |
| 1991 | 142 | 0 |
| 1992 | 178 | 0 |
| 1993 | 172 | 0 |
| 1994 | 248 | 0 |
| 1995 | 197 | 0 |
| 1996 | 234 | 0 |
| 1997 | 198 | 0 |
| 1998 | 347 | 0 |
| 1999 | 330 | 0 |
| 2000 | 331 | 0 |
| 2001 | 304 | 123 |
| 2002 | 294 | 425 |
| 2003 | 323 | 518 |
| 2004 | 356 | 655 |
| 2005 | 366 | 807 |
| 2006 | 519 | 651 |
| 2007 | 479 | 725 |
| 2008 | 548 | 664 |
| 2009 | 523 | 734 |
| 2010 | 584 | 616 |
| 2011 | 638 | 590 |
| 2012 | 657 | 554 |
| 2013 | 780 | 517 |
| 2014 | 751 | 436 |
| 2015 | 615 | 529 |
| 2016 | 466 | 505 |
| 2017 | 502 | 615 |
| 2018 | 474 | 551 |
| 2019 | 595 | 477 |
| 2020 | 502 | 406 |
| 2021 | 344 | 369 |
| 2022 | 371 | 370 |
| 2023 | 312 | 313 |
| 2024 | 293 | 297 |
| 2025 | 199 | 257 |
| 2026 | 139 | 171 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04N 1/56Processing of colour picture signals10,883
- H04N 1/50Picture reproducers1,495
- H04N 1/64Systems for the transmission or the storage of the colour picture signal1,417
- H04N 1/52Circuits or arrangements for halftone screening1,045
- H04N 1/48Picture signal generators866
- H04N 1/54Conversion of colour picture signals to a plurality of signals some of623
- H04N 1/465Conversion of monochrome to colour84
Recent patents
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- Image forming apparatus comprising a first light emitter along a vertical direction that intersects with a second light emitter along another direction on the border of an internal discharge space front wall surface of the housing6 Oct 2026US 12,756,788 B2Seiko Epson Corporation
- Color correction matrix calibration for high dynamic range sensors6 Oct 2026US 12,756,789 B2NVIDIA Corporation
- Information processing apparatus, method for the same, and storage medium6 Oct 2026US 12,756,790 B2Canon Kabushiki Kaisha
- Image reading apparatus with image sensors and color measurer6 Oct 2026US 12,756,791 B2Konica Minolta, Inc.
- Inkjet print planning method8 Oct 2026US 2026/0313057 A1Kateeva, Inc.
- Storage medium storing program that extends functions of general purpose scan software capable of being used in common for reading apparatuses provided by a plurality of manufacturers, information processing apparatus, and control method for information processing apparatus8 Oct 2026US 2026/0313064 A1Canon Kabushiki Kaisha
- Smoothing of passthrough frame sequences in video see-through (vst) extended reality (xr) or other applications8 Oct 2026US 2026/0313065 A1Samsung Electronics Co., Ltd.
- Image processing apparatus, image processing method, and non-transitory computer-readable medium8 Oct 2026US 2026/0313066 A1Sharp Kabushiki Kaisha
- Image processing apparatus, image processing method, and non-transitory computer-readable medium8 Oct 2026US 2026/0313067 A1Sharp Kabushiki Kaisha
Most cited
By later US patents
- Optical scanning device and image forming apparatus1,019US 7,598,972 B2Ricoh Company, Ltd. · 2009
- Methods for differential image quality enhancement for a multiple detector system, systems and use thereof1,019US 9,471,969 B2ExxonMobil Upstream Research Company · 2016
- Image processing method and apparatus, computer program, and computer-readable storage medium815US 8,483,509 B2Canon Kabushiki Kaisha · 2013
- Method and system operative to process color image data541US 8,600,158 B2Hand Held Products, Inc. · 2013
- Method and system operative to process color image data476US 8,849,019 B2Hand Held Products, Inc. · 2014