H04N 21/422
Input-only peripherals , i.e. input devices connected to specially adapted client devices
Official title: Input-only peripherals {, i.e. input devices connected to specially adapted client devices}, e.g. global positioning system [GPS] {(input devices also receiving signals from specially adapted client devices H04N21/4104)}
H04N21/422 (Input-only peripherals , i.e. input devices connected to specially adapted client devices) appears on 13,430 US grants and 18,060 published applications in this corpus.
Search patents in H04N- Granted patents
- 13,430
- Published applications
- 18,060
- Assignees
- 2,775
- Inventors
- 22,919
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 12 | 0 |
| 1991 | 11 | 0 |
| 1992 | 7 | 0 |
| 1993 | 5 | 0 |
| 1994 | 8 | 0 |
| 1995 | 23 | 0 |
| 1996 | 44 | 0 |
| 1997 | 55 | 0 |
| 1998 | 86 | 0 |
| 1999 | 97 | 0 |
| 2000 | 83 | 0 |
| 2001 | 104 | 80 |
| 2002 | 109 | 345 |
| 2003 | 107 | 316 |
| 2004 | 123 | 427 |
| 2005 | 108 | 494 |
| 2006 | 170 | 635 |
| 2007 | 172 | 640 |
| 2008 | 152 | 600 |
| 2009 | 231 | 677 |
| 2010 | 325 | 850 |
| 2011 | 382 | 824 |
| 2012 | 534 | 849 |
| 2013 | 685 | 1001 |
| 2014 | 887 | 1224 |
| 2015 | 912 | 1114 |
| 2016 | 926 | 972 |
| 2017 | 920 | 1017 |
| 2018 | 845 | 965 |
| 2019 | 870 | 825 |
| 2020 | 855 | 823 |
| 2021 | 765 | 725 |
| 2022 | 704 | 721 |
| 2023 | 678 | 641 |
| 2024 | 628 | 571 |
| 2025 | 535 | 465 |
| 2026 | 261 | 259 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04N 21/42204User interfaces specially adapted for controlling a client device through a remote6,908
- H04N 21/4223Cameras4,200
- H04N 21/42203Sound input device2,261
- H04N 21/42202Environmental sensors1,052
- H04N 21/4227Providing remote input by a user located remotely from the client device818
- H04N 21/42201Biosensors681
Recent patents
- Television video and/or audio overlay entertainment device and method6 Oct 2026US 12,756,792 B2
- Apparatus, systems, and methods for user presence detection for audience monitoring6 Oct 2026US 12,756,896 B2The Nielsen Company (US), LLC
- Methods and apparatus to assign viewers to media meter data6 Oct 2026US 12,756,899 B2The Nielsen Company (US), LLC
- Trigger activated enhancement of content user experience6 Oct 2026US 12,756,906 B2Roku, Inc.
- Television and system control method29 Sep 2026US 12,750,543 B2LG Electronics Inc.
- System and method to remotely control and test media player devices8 Oct 2026US 2026/0313088 A1
- Display device and method for operating same8 Oct 2026US 2026/0313184 A1LG Electronics Inc.
- Systems and methods for controlling access to media assets using two-factor authentication8 Oct 2026US 2026/0313193 A1Adeia Guides Inc.
- Method and server for providing media content8 Oct 2026US 2026/0313196 A1Samsung Electronics Co., Ltd.
- Device display control method, electronic device, and communication system1 Oct 2026US 2026/0299711 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Systems and methods for displaying and recording control interface with television programs, video, advertising information and program scheduling information2,572US 6,177,931 B1Index Systems, Inc. · 2001
- Multi-room entertainment system with in-room media player/dispenser1,755US 6,256,554 B12001
- Programmable remote control device for interacting with a plurality of remotely controlled devices1,549US 5,410,326 A1995
- Inter-active program guide with default selection control1,314US 5,850,218 ATime Warner Entertainment Co., L. P. · 1998
- Systems and methods for linking television viewers with advertisers and broadcasters1,174US 6,002,394 AStarsight Telecast, Inc. · 1999