H04N 21/4888
For displaying teletext characters
Official title: {for displaying teletext characters}
H04N21/4888 (For displaying teletext characters) appears on 217 US grants and 130 published applications in this corpus.
Search patents in H04N- Granted patents
- 217
- Published applications
- 130
- Assignees
- 86
- Inventors
- 300
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 5 |
| 2003 | 2 | 3 |
| 2004 | 1 | 2 |
| 2005 | 1 | 6 |
| 2006 | 0 | 4 |
| 2007 | 2 | 4 |
| 2008 | 3 | 4 |
| 2009 | 1 | 2 |
| 2010 | 14 | 2 |
| 2011 | 15 | 1 |
| 2012 | 3 | 3 |
| 2013 | 12 | 4 |
| 2014 | 27 | 13 |
| 2015 | 11 | 10 |
| 2016 | 8 | 22 |
| 2017 | 14 | 9 |
| 2018 | 9 | 3 |
| 2019 | 13 | 4 |
| 2020 | 9 | 4 |
| 2021 | 6 | 7 |
| 2022 | 1 | 3 |
| 2023 | 7 | 8 |
| 2024 | 3 | 1 |
| 2025 | 5 | 4 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for automated extraction of closed captions in real time or near real-time and tagging of streaming data for advertisements25 Aug 2026US 12,720,139 B2Crossbar Media Group, Inc
- Systems and methods for highlighting content within media assets12 May 2026US 12,627,850 B2Adeia Guides Inc.
- Method and apparatus for video processing11 Nov 2025US 12,470,775 B2Lemon Inc.
- Augmentation of audio/video content with enhanced interactive content27 May 2025US 12,316,923 B2Adeia Guides Inc.
- Transmission method, reception method, transmission device, and reception device8 Apr 2025US 12,273,591 B2Sun Patent Trust
- Method and apparatus for video processing12 Feb 2026US 2026/0046489 A1Lemon Inc.
- Caption Anomaly Detection25 Sep 2025US 2025/0301192 A1Comcast Cable Communications, LLC
- Augmentation of audio/video content with enhanced interactive content28 Aug 2025US 2025/0274642 A1Adeia Guides Inc.
- Transmission method, reception method, transmission device, and reception device3 Jul 2025US 2025/0220270 A1Sun Patent Trust
- Providing enhanced content with identified complex content segments16 Jan 2025US 2025/0024113 A1Rovi Guides, Inc.
Most cited
By later US patents
- Signal processing appparatus and methods797US 5,335,277 AThe Personalized Mass Media Corporation · 1994
- Signal processing apparatus and methods615US 4,965,825 AThe Personalized Mass Media Corporation · 1990
- Signal processing apparatus and methods470US 5,233,654 AThe Personalized Mass Media Corporation · 1993
- Signal processing apparatus and methods449US 5,109,414 AThe Personalized Mass Media Corporation · 1992
- TV data capture device416US 4,894,789 A1990