H04N 1/48
Picture signal generators
Official title: Picture signal generators (for halftone screening H04N1/52)
H04N1/48 (Picture signal generators) appears on 866 US grants and 488 published applications in this corpus.
Search patents in H04N- Granted patents
- 866
- Published applications
- 488
- Assignees
- 213
- Inventors
- 1,337
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 7 | 0 |
| 1984 | 7 | 0 |
| 1985 | 14 | 0 |
| 1986 | 6 | 0 |
| 1987 | 32 | 0 |
| 1988 | 17 | 0 |
| 1989 | 30 | 0 |
| 1990 | 25 | 0 |
| 1991 | 17 | 0 |
| 1992 | 22 | 0 |
| 1993 | 19 | 0 |
| 1994 | 16 | 0 |
| 1995 | 22 | 0 |
| 1996 | 20 | 0 |
| 1997 | 21 | 0 |
| 1998 | 20 | 0 |
| 1999 | 33 | 0 |
| 2000 | 30 | 0 |
| 2001 | 18 | 6 |
| 2002 | 26 | 28 |
| 2003 | 33 | 31 |
| 2004 | 32 | 22 |
| 2005 | 14 | 36 |
| 2006 | 19 | 29 |
| 2007 | 23 | 29 |
| 2008 | 23 | 36 |
| 2009 | 22 | 29 |
| 2010 | 25 | 26 |
| 2011 | 30 | 19 |
| 2012 | 23 | 15 |
| 2013 | 28 | 14 |
| 2014 | 28 | 9 |
| 2015 | 19 | 23 |
| 2016 | 17 | 16 |
| 2017 | 19 | 22 |
| 2018 | 7 | 23 |
| 2019 | 31 | 19 |
| 2020 | 22 | 10 |
| 2021 | 6 | 10 |
| 2022 | 10 | 15 |
| 2023 | 3 | 8 |
| 2024 | 13 | 5 |
| 2025 | 4 | 8 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- Image acquisition apparatus and control method with signal amplification17 Feb 2026US 12,556,639 B2Canon Kabushiki Kaisha
- Information processing apparatus, imaging system, and information processing method29 Jul 2025US 12,375,781 B2Sony Semiconductor Solutions Corporation
- Optical sensor, paper sheet identification device, paper sheet processing device, and light detection method8 Jul 2025US 12,354,429 B2Glory Ltd.
- Imaging device for a medical imaging system, medical imaging system and method for generating medical images20 May 2025US 12,306,415 B2BHS Technologies GmbH
- Pixel Data Determination Method and Apparatus, and Electronic Device18 Dec 2025US 2025/0386105 A1Weihai Hualing Opto-Electronics Co., Ltd.
- Reading Device, Reading Method, And Non-Transitory Recording Medium31 Jul 2025US 2025/0247490 A1Ricoh Company, Ltd.
- Image processing apparatus, reading device, image forming apparatus, image processing method, and recording medium10 Jul 2025US 2025/0227189 A1
- Information processing apparatus, information processing method, and information processing program13 Mar 2025US 2025/0088601 A1FUJIFILM Corporation
- Imaging device6 Mar 2025US 2025/0078242 A1SCREEN Holdings Co., Ltd.
Most cited
By later US patents
- Methods and systems for laser speckle imaging of tissue using a color image sensor259US 10,169,862 B2Novadaq Technologies ULC · 2019
- Method for recording and reproducing information, apparatus therefor and recording medium175US 5,638,103 ADai Nippon Printing Co.Ltd. · 1997
- Color scanning system168US 4,992,860 AMitsubishi Denki Kabushiki Kaisha · 1991
- Image processing method and image forming apparatus154US 4,825,246 AKonishiroku Photo Industry Co., Ltd. · 1989
- CCD Color image sensor with a light source having a spectrum distribution characteristic having peaks at 470 nm and 590 nm and having no wavelengths above 700 nm153US 4,716,456 ATokya Shibaura Denki Kabushiki Kaisha · 1987