H04N 9/64
Circuits for processing colour signals
Official title: Circuits for processing colour signals (H04N9/77 takes precedence; camera processing pipelines for processing colour signals H04N23/84)
H04N9/64 (Circuits for processing colour signals) appears on 6,373 US grants and 4,838 published applications in this corpus.
Search patents in H04N- Granted patents
- 6,373
- Published applications
- 4,838
- Assignees
- 1,465
- Inventors
- 9,342
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 34 | 0 |
| 1977 | 44 | 0 |
| 1978 | 34 | 0 |
| 1979 | 19 | 0 |
| 1980 | 49 | 0 |
| 1981 | 44 | 0 |
| 1982 | 41 | 0 |
| 1983 | 47 | 0 |
| 1984 | 41 | 0 |
| 1985 | 89 | 0 |
| 1986 | 68 | 0 |
| 1987 | 114 | 0 |
| 1988 | 71 | 0 |
| 1989 | 64 | 0 |
| 1990 | 57 | 0 |
| 1991 | 78 | 0 |
| 1992 | 96 | 0 |
| 1993 | 83 | 0 |
| 1994 | 142 | 0 |
| 1995 | 105 | 0 |
| 1996 | 109 | 0 |
| 1997 | 104 | 0 |
| 1998 | 145 | 0 |
| 1999 | 153 | 0 |
| 2000 | 135 | 0 |
| 2001 | 140 | 33 |
| 2002 | 138 | 175 |
| 2003 | 113 | 168 |
| 2004 | 127 | 159 |
| 2005 | 95 | 236 |
| 2006 | 174 | 238 |
| 2007 | 115 | 216 |
| 2008 | 135 | 200 |
| 2009 | 140 | 230 |
| 2010 | 157 | 231 |
| 2011 | 160 | 165 |
| 2012 | 228 | 150 |
| 2013 | 218 | 162 |
| 2014 | 204 | 171 |
| 2015 | 198 | 231 |
| 2016 | 182 | 234 |
| 2017 | 200 | 204 |
| 2018 | 199 | 243 |
| 2019 | 252 | 256 |
| 2020 | 277 | 210 |
| 2021 | 203 | 188 |
| 2022 | 174 | 170 |
| 2023 | 139 | 187 |
| 2024 | 173 | 162 |
| 2025 | 167 | 133 |
| 2026 | 99 | 86 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04N 9/646For image enhancement1,629
- H04N 9/68For controlling the amplitude of colour signals916
- H04N 9/74For obtaining special effects817
- H04N 9/641Multi-purpose receivers805
- H04N 9/67For matrixing623
- H04N 9/73Colour balance circuits580
- H04N 9/643Hue control means493
- H04N 9/642Multi-standard receivers358
All 15 subgroupsShow fewer
Recent patents
- Optimized color filter including a bounded total transmittance of light set by a target percentage for modifying the spectral response of a vision system6 Oct 2026US 12,756,807 B2UEA Enterprises Limited
- Method and image device to obtain image of water shooting scene using color temperature data, and performing white balance process6 Oct 2026US 12,756,808 B2Sz Dji Technology Co., Ltd.
- Image processing method, electronic device, and non-transitory readable storage medium29 Sep 2026US 12,748,521 B2Vivo Mobile Communication Co., Ltd.
- Camera apparatus and method of enhanced foliage detection29 Sep 2026US 12,749,307 B2Tartan Aerial Sense Tech Private Limited
- Camera apparatus and method for reducing latency in plant detection from time of image capture29 Sep 2026US 12,749,308 B2Tartan Aerial Sense Tech Private Limited
- Image correction method8 Oct 2026US 2026/0313078 A1Seiko Epson Corporation
- Real-time hdr video for vehicle control8 Oct 2026US 2026/0313240 A1Contrast, Inc.
- Image sensor including color separating lens array and electronic apparatus including the image sensor1 Oct 2026US 2026/0299173 A1Samsung Electronics Co., Ltd.
- Method and device for processing video signal by using adaptive color space transform1 Oct 2026US 2026/0303852 A1Wilus Institute of Standards and Technology Inc.
- Signal reshaping for high dynamic range signals1 Oct 2026US 2026/0303879 A1Dolby Laboratories Licensing Corporation
Most cited
By later US patents
- Use of laser light and red-green-blue coloration to determine properties of back scattered light532US 11,100,631 B2Cilag GmbH International · 2021
- Video monitoring and conferencing system518US 5,625,410 A1997
- Moving image compression quality enhancement using displacement filters with negative lobes497US 6,728,317 B1Dolby Laboratories Licensing Corporation · 2004
- Hand held remote control device with trigger button470US 5,724,106 AGateway 2000, Inc. · 1998
- TV Graphics and mixing control373US 4,218,698 ARCA Corporation · 1980