H04N 5/16
Circuitry for reinsertion of dc and slowly varying components of signal
Official title: Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level
H04N5/16 (Circuitry for reinsertion of dc and slowly varying components of signal) appears on 348 US grants and 135 published applications in this corpus.
Search patents in H04N- Granted patents
- 348
- Published applications
- 135
- Assignees
- 156
- Inventors
- 588
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 6 | 0 |
| 1981 | 8 | 0 |
| 1982 | 5 | 0 |
| 1983 | 6 | 0 |
| 1984 | 2 | 0 |
| 1985 | 8 | 0 |
| 1986 | 6 | 0 |
| 1987 | 13 | 0 |
| 1988 | 4 | 0 |
| 1989 | 9 | 0 |
| 1990 | 10 | 0 |
| 1991 | 10 | 0 |
| 1992 | 9 | 0 |
| 1993 | 11 | 0 |
| 1994 | 16 | 0 |
| 1995 | 8 | 0 |
| 1996 | 16 | 0 |
| 1997 | 6 | 0 |
| 1998 | 8 | 0 |
| 1999 | 15 | 0 |
| 2000 | 8 | 0 |
| 2001 | 7 | 1 |
| 2002 | 5 | 5 |
| 2003 | 10 | 7 |
| 2004 | 7 | 18 |
| 2005 | 5 | 16 |
| 2006 | 14 | 10 |
| 2007 | 14 | 11 |
| 2008 | 14 | 14 |
| 2009 | 5 | 9 |
| 2010 | 11 | 10 |
| 2011 | 9 | 4 |
| 2012 | 13 | 8 |
| 2013 | 8 | 2 |
| 2014 | 4 | 4 |
| 2015 | 3 | 4 |
| 2016 | 7 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 3 |
| 2019 | 3 | 0 |
| 2020 | 0 | 1 |
| 2021 | 2 | 2 |
| 2022 | 0 | 0 |
| 2023 | 2 | 0 |
| 2024 | 0 | 4 |
| 2025 | 2 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Content-optimized ambient light HDR video adaptation4 Aug 2026US 12,700,213 B2Koninklijke Philips N. V.
- Method for black level correction, non-transitory computer-readable storage medium, and chip9 Sep 2025US 12,413,681 B2Beijing Xiaomi Mobile Software Co., Ltd.
- Image sensor having black level correction15 Jul 2025US 12,363,247 B2OmniVision Technologies, Inc.
- Image signal processor, electronic device including image signal processor, and associated methods31 Oct 2023US 11,805,332 B2Samsung Electronics Co., Ltd.
- Black level drift24 Oct 2023US 11,800,040 B2Axis AB
- Information processing system and non-transitory computer-readable storage medium20 Feb 2025US 2025/0063129 A1FUJIFILM Business Innovation Corp.
- Method for black level correction, non-transitory computer-readable storage medium, and chip5 Sep 2024US 2024/0297951 A1Beijing Xiaomi Mobile Software Co., Ltd.
- Image Sensor Having Black Level Correction15 Aug 2024US 2024/0275906 A1OmniVision Technologies, Inc.
- Content-optimized abient light hdr video adaptation18 Jul 2024US 2024/0242472 A1Koninklijke Philips N. V.
- Image processing device, image processing method, and recording medium6 Jun 2024US 2024/0185402 A1Socionext Inc.
Most cited
By later US patents
- Image sensing apparatus218US 6,627,896 B1Canon Kabushiki Kaisha · 2003
- CCD dark mean level correction circuit employing digital processing and analog subtraction requiring no advance knowledge of dark mean level85US 5,659,355 AEastman Kodak Company · 1997
- TIR Electro-optic modulator with individually addressed electrodes76US 4,281,904 AXerox Corporation · 1981
- Signal processor circuit for endoscope systems of all-pixels readout type67US 5,929,900 AFuji Photo Optical Co., Ltd. · 1999
- Electronic endoscope system65US 7,728,867 B2Hoya Corporation · 2010