H04N 23/70
Circuitry for compensating brightness variation in the scene
H04N23/70 (Circuitry for compensating brightness variation in the scene) appears on 13,412 US grants and 14,844 published applications in this corpus.
Search patents in H04N- Granted patents
- 13,412
- Published applications
- 14,844
- Assignees
- 2,569
- Inventors
- 19,330
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 5 | 0 |
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 8 | 0 |
| 1983 | 8 | 0 |
| 1984 | 14 | 0 |
| 1985 | 29 | 0 |
| 1986 | 17 | 0 |
| 1987 | 36 | 0 |
| 1988 | 32 | 0 |
| 1989 | 55 | 0 |
| 1990 | 50 | 0 |
| 1991 | 56 | 0 |
| 1992 | 46 | 0 |
| 1993 | 55 | 0 |
| 1994 | 55 | 0 |
| 1995 | 50 | 0 |
| 1996 | 57 | 0 |
| 1997 | 44 | 0 |
| 1998 | 51 | 0 |
| 1999 | 54 | 0 |
| 2000 | 48 | 0 |
| 2001 | 48 | 44 |
| 2002 | 77 | 134 |
| 2003 | 91 | 203 |
| 2004 | 105 | 188 |
| 2005 | 106 | 275 |
| 2006 | 143 | 296 |
| 2007 | 128 | 365 |
| 2008 | 204 | 373 |
| 2009 | 262 | 413 |
| 2010 | 351 | 437 |
| 2011 | 375 | 406 |
| 2012 | 417 | 444 |
| 2013 | 425 | 521 |
| 2014 | 480 | 595 |
| 2015 | 612 | 811 |
| 2016 | 677 | 798 |
| 2017 | 793 | 938 |
| 2018 | 751 | 835 |
| 2019 | 941 | 984 |
| 2020 | 968 | 1113 |
| 2021 | 966 | 926 |
| 2022 | 862 | 956 |
| 2023 | 810 | 891 |
| 2024 | 785 | 788 |
| 2025 | 763 | 611 |
| 2026 | 483 | 499 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04N 23/73By influencing the exposure time3,950
- H04N 23/74By influencing the scene brightness using illuminating means3,654
- H04N 23/71Circuitry for evaluating the brightness variation3,535
- H04N 23/741By increasing the dynamic range of the image compared to the dynamic2,356
- H04N 23/72Combination of two or more compensation controls1,704
- H04N 23/76By influencing the image signals1,639
- H04N 23/75By influencing optical camera components1,391
- H04N 23/743Bracketing, i.e. taking a series of images with varying exposure conditions781
Recent patents
- Ophthalmic observation apparatus6 Oct 2026US 12,751,618 B2Topcon Corporation
- System and method for monitoring moving elements6 Oct 2026US 12,754,101 B2Odysight.Ai Ltd.
- Vision inspection apparatus and vision inspection method6 Oct 2026US 12,755,365 B2
- Predictive exposure settings for fixed and/or mobile imaging6 Oct 2026US 12,756,922 B2Intel Corporation
- Methods and systems for enhancing low light frame in a multi camera system6 Oct 2026US 12,756,927 B2Samsung Electronics Co., Ltd.
- Optical fiber waveguide in an endoscopic system for hyperspectral, fluorescence, and laser mapping imaging8 Oct 2026US 2026/0306023 A1Cilag GmbH International
- Signal processing device and signal processing method8 Oct 2026US 2026/0311481 A1Sony Semiconductor Solutions Corporation
- Vision-Based Indicator Signal Detection Using Spatiotemporal Filtering8 Oct 2026US 2026/0311495 A1Waymo LLC
- User interface, method, and system for enhancing capture of signals from a front-facing camera8 Oct 2026US 2026/0313224 A1Nuralogix Corporation
- Imaging device, substrate observation apparatus, substrate processing apparatus, and imaging method8 Oct 2026US 2026/0313229 A1SCREEN Holdings Co., Ltd.
Most cited
By later US patents
- Methods for differential image quality enhancement for a multiple detector system, systems and use thereof1,019US 9,471,969 B2ExxonMobil Upstream Research Company · 2016
- Vehicle interior LED lighting system962US 7,195,381 B2Donnelly Corporation · 2007
- Auto-exposure method using continuous video frames under controlled illumination567US 8,408,464 B2Metrologic Instruments, Inc. · 2013
- Communication apparatus image processing apparatus communication method and image processing method540US 6,266,082 B1Canon Kabushiki Kaisha · 2001
- Imaging terminal having image sensor and lens assembly538US 8,596,539 B2Hand Held Products, Inc. · 2013