H04N 21/814
Comprising emergency warnings
Official title: {comprising emergency warnings (arrangements specially adapted for emergency or urgency in broadcast systems H04H20/59; arrangements for providing alarms, notifications, alerts to substation in data switching networks H04L12/1895)}
H04N21/814 (Comprising emergency warnings) appears on 459 US grants and 603 published applications in this corpus.
Search patents in H04N- Granted patents
- 459
- Published applications
- 603
- Assignees
- 172
- Inventors
- 717
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 3 |
| 2003 | 2 | 6 |
| 2004 | 2 | 41 |
| 2005 | 3 | 12 |
| 2006 | 3 | 19 |
| 2007 | 6 | 23 |
| 2008 | 7 | 22 |
| 2009 | 14 | 32 |
| 2010 | 17 | 29 |
| 2011 | 19 | 27 |
| 2012 | 23 | 24 |
| 2013 | 24 | 36 |
| 2014 | 31 | 26 |
| 2015 | 28 | 29 |
| 2016 | 17 | 32 |
| 2017 | 26 | 32 |
| 2018 | 25 | 27 |
| 2019 | 27 | 37 |
| 2020 | 35 | 22 |
| 2021 | 38 | 27 |
| 2022 | 25 | 26 |
| 2023 | 22 | 17 |
| 2024 | 25 | 23 |
| 2025 | 17 | 15 |
| 2026 | 11 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Remote control using ATSC 3.025 Aug 2026US 12,720,281 B2Sony Group Corporation
- Display device and control method thereof11 Aug 2026US 12,704,874 B2LG Electronics Inc.
- Service system notifying dangerous situation through linkage between mobile terminal and set-top box11 Aug 2026US 12,707,128 B2Alt LLC
- Systems and methods for providing a contextual menu with information related to an emergency alert21 Jul 2026US 12,689,808 B2Adeia Guides Inc.
- Broadcast receiving apparatus and portable information terminal2 Jun 2026US 12,647,652 B2Maxell, Ltd.
- Broadcast receiving apparatus and portable information terminal8 Oct 2026US 2026/0313200 A1Maxell, Ltd.
- Systems and methods for providing a contextual menu with information related to an emergency alert8 Oct 2026US 2026/0313205 A1Adeia Guides Inc.
- Wireless device and wireless display system27 Aug 2026US 2026/0252300 A1LG Electronics Inc.
- Remote control using atsc 3.028 May 2026US 2026/0149950 A1Sony Group Corporation
- Digital Display Device Allowing A Remote Interruption Of A Content Diffusion14 May 2026US 2026/0136074 A1JCDecaux SA
Most cited
By later US patents
- Notification system for television receivers279US 5,659,366 AMatsushita Electric Corporation of America · 1997
- Interactive communication system for communicating video game and karaoke software197US 6,488,508 B2ADC Technology Inc. · 2002
- Interactive communication system for communicating video game and karaoke software189US 6,702,585 B2ADC Technology Inc. · 2004
- Emergency alert data delivery apparatus and methods185US 7,592,912 B2Time Warner Cable Inc. · 2009
- Message delivery method for interactive televideo system171US 5,874,985 AMicrosoft Corporation · 1999