H04N 21/2221
Being a cable television head-end
Official title: {being a cable television head-end (CATV in broadcast systems H04H20/78)}
H04N21/2221 (Being a cable television head-end) appears on 643 US grants and 734 published applications in this corpus.
Search patents in H04N- Granted patents
- 643
- Published applications
- 734
- Assignees
- 243
- Inventors
- 1,060
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 9 | 0 |
| 1997 | 7 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 9 | 0 |
| 2001 | 14 | 11 |
| 2002 | 17 | 44 |
| 2003 | 14 | 39 |
| 2004 | 13 | 33 |
| 2005 | 4 | 28 |
| 2006 | 22 | 25 |
| 2007 | 16 | 90 |
| 2008 | 23 | 65 |
| 2009 | 47 | 55 |
| 2010 | 32 | 25 |
| 2011 | 31 | 29 |
| 2012 | 30 | 26 |
| 2013 | 33 | 31 |
| 2014 | 33 | 45 |
| 2015 | 46 | 34 |
| 2016 | 44 | 42 |
| 2017 | 46 | 21 |
| 2018 | 34 | 18 |
| 2019 | 26 | 18 |
| 2020 | 20 | 16 |
| 2021 | 15 | 14 |
| 2022 | 13 | 8 |
| 2023 | 12 | 7 |
| 2024 | 7 | 5 |
| 2025 | 4 | 4 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Addressable advertising insertion for playout delay23 Jun 2026US 12,666,093 B2DISH Technologies L. L. C.
- Virtual access hub16 Jun 2026US 12,659,632 B2Harmonic, Inc.
- Broadband digital access (BDA) architecture for extending digital broadband communications in an HFC network30 Dec 2025US 12,513,359 B2Applied Optoelectronics, Inc.
- Targeting content based on location18 Nov 2025US 12,477,165 B2Invidi Technologies Corporation
- Cache eviction during off-peak transactions10 Jun 2025US 12,328,455 B2Adeia Media Holdings LLC
- System for packetcable version management9 Apr 2026US 2026/0101072 A1ARRIS Enterprises LLC
- Cache eviction during off-peak transactions28 Aug 2025US 2025/0274618 A1Adeia Media Holdings LLC
- Comprehensive System Design to Address the Needs for Virtual Segmentation of the Coaxial Cable Plant15 May 2025US 2025/0158846 A1Coherent Logix, Incorporated
- Addressable advertising insertion for playout delay3 Apr 2025US 2025/0113069 A1DISH Technologies L. L. C.
- Targeting content based on location6 Feb 2025US 2025/0047925 A1Invidi Technologies Corporation
Most cited
By later US patents
- Network controller for cable television delivery systems1,167US 5,600,364 ADiscovery Communications, Inc. · 1997
- Terminal for suggesting programs offered on a television program delivery system1,065US 5,798,785 ADiscovery Communications, Inc. · 1998
- Television program delivery system971US 5,559,549 ADiscovery Communications, Inc. · 1996
- Targeted advertisement using television delivery systems916US 6,463,585 B1Discovery Communications, Inc. · 2002
- Method and system for providing targeted advertisements877US 6,718,551 B1BellSouth Intellectual Property Corporation · 2004