H04N 1/40075
Descreening, i.e. converting a halftone signal into a corresponding continuous-tone signal
Official title: {Descreening, i.e. converting a halftone signal into a corresponding continuous-tone signal; Rescreening, i.e. combined descreening and halftoning}
H04N1/40075 (Descreening, i.e. converting a halftone signal into a corresponding continuous-tone signal) appears on 253 US grants and 104 published applications in this corpus.
Search patents in H04N- Granted patents
- 253
- Published applications
- 104
- Assignees
- 85
- Inventors
- 350
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 8 | 0 |
| 1990 | 14 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 9 | 0 |
| 1994 | 13 | 0 |
| 1995 | 11 | 0 |
| 1996 | 11 | 0 |
| 1997 | 5 | 0 |
| 1998 | 14 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 13 | 0 |
| 2002 | 8 | 10 |
| 2003 | 5 | 14 |
| 2004 | 7 | 12 |
| 2005 | 6 | 6 |
| 2006 | 11 | 7 |
| 2007 | 10 | 6 |
| 2008 | 6 | 8 |
| 2009 | 7 | 6 |
| 2010 | 5 | 8 |
| 2011 | 13 | 3 |
| 2012 | 7 | 3 |
| 2013 | 6 | 5 |
| 2014 | 5 | 2 |
| 2015 | 4 | 3 |
| 2016 | 3 | 2 |
| 2017 | 1 | 2 |
| 2018 | 0 | 1 |
| 2019 | 3 | 2 |
| 2020 | 0 | 1 |
| 2021 | 2 | 0 |
| 2022 | 2 | 1 |
| 2023 | 1 | 1 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Greyscale images17 Mar 2026US 12,581,023 B2Hewlett-Packard Development Company, L. P.
- Greyscale images5 Sep 2023US 11,750,759 B2Hewlett-Packard Development Company, L. P.
- Image processing apparatus and image forming apparatus27 Dec 2022US 11,539,859 B2KYOCERA Document Solutions Inc.
- Color plane misregistration determinations27 Dec 2022US 11,539,861 B1Hewlett-Packard Development Company, L. P.
- Image processing apparatus30 Nov 2021US 11,188,779 B2I. R. I. S.
- Greyscale images4 Jan 2024US 2024/0007578 A1Hewlett-Packard Development Company, L. P.
- Greyscale images2 Mar 2023US 2023/0069685 A1Hewlett-Packard Development Company, L. P.
- Image processing apparatus and image forming apparatus11 Aug 2022US 2022/0256052 A1KYOCERA Document Solutions Inc.
- Image processing apparatus, method for controlling image processing apparatus, and storage medium30 Apr 2020US 2020/0134309 A1Canon Kabushiki Kaisha
- Image Processing Apparatus12 Sep 2019US 2019/0279018 A1I. R. I. S.
Most cited
By later US patents
- Automatic multimode continuous halftone line copy reproduction141US 4,194,221 AXerox Corporation · 1980
- Image processing system and method employing adaptive filtering to provide improved reconstruction of continuous tone images from halftone images including those without a screen structure131US 5,343,309 AXerox Corporation · 1994
- Method and apparatus for halftone rendering of a gray scale image using a blue noise mask127US 5,726,772 AResearch Corporation Technologies, Inc. · 1998
- Method and apparatus for halftone rendering of a gray image using a blue noise mask121US 5,543,941 AResearch Corporation Technologies, Inc. · 1996
- Method and apparatus for halftone rendering of a gray scale image using a blue noise mask118US 5,111,310 AResearch Corporation Technologies, Inc. · 1992