H04N 21/437
Interfacing the upstream path of the transmission network
Official title: Interfacing the upstream path of the transmission network, e.g. for transmitting client requests to a VOD server {(flow control in data networks H04L47/10; streaming protocols, e.g. RTP or RTCP, H04L65/65; scheduling or organising the servicing of application requests in data packet switching networks H04L67/60)}
H04N21/437 (Interfacing the upstream path of the transmission network) appears on 858 US grants and 1,063 published applications in this corpus.
Search patents in H04N- Granted patents
- 858
- Published applications
- 1,063
- Assignees
- 353
- Inventors
- 1,550
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 5 | 0 |
| 1999 | 9 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 2 |
| 2002 | 1 | 27 |
| 2003 | 3 | 20 |
| 2004 | 3 | 7 |
| 2005 | 3 | 8 |
| 2006 | 11 | 12 |
| 2007 | 9 | 13 |
| 2008 | 9 | 15 |
| 2009 | 13 | 9 |
| 2010 | 13 | 23 |
| 2011 | 13 | 16 |
| 2012 | 17 | 24 |
| 2013 | 18 | 59 |
| 2014 | 35 | 116 |
| 2015 | 59 | 97 |
| 2016 | 74 | 95 |
| 2017 | 82 | 63 |
| 2018 | 61 | 63 |
| 2019 | 71 | 77 |
| 2020 | 69 | 58 |
| 2021 | 52 | 44 |
| 2022 | 57 | 78 |
| 2023 | 57 | 49 |
| 2024 | 53 | 38 |
| 2025 | 34 | 33 |
| 2026 | 17 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Dynamic distribution of three-dimensional content18 Aug 2026US 12,712,995 B2Adeia Media Holdings LLC
- Ingress detection and localization11 Aug 2026US 12,707,119 B2Cox Communications, Inc.
- Media data processing method and media data processing device17 Sep 2026US 2026/0281485 A1LG Electronics Inc.
- Video data transmission method and device, storage medium, and system17 Sep 2026US 2026/0281496 A1Cloud Intelligence Assets Holding (Singapore) Private Limited
- Lean private copy of media content within network-based digital video recordings20 Aug 2026US 2026/0246998 A1Adeia Media Holdings LLC
- Systems and method for providing video on demand in an intelligent television6 Aug 2026US 2026/0227864 A1Multimedia Technologies Pte, Ltd
- Smart Sports Result Implications16 Jul 2026US 2026/0199736 A1DISH Network L.L.C.
Most cited
By later US patents
- Asymmetric hybrid access system and method498US 5,586,121 AHybrid Networks, Inc. · 1996
- Method for hashing in a packet network switching system314US 5,708,659 ALSI Logic Corporation · 1998
- Hybrid access system having channel allocation and prioritized polling schemes297US 5,818,845 AHybrid Networks, Inc. · 1998
- Method of substituting content during program breaks249US 8,434,103 B2ARRIS Group, Inc. · 2013
- Methods and systems for service level agreement enforcement on a data-over cable system232US 6,553,568 B13Com Corporation · 2003