G10H 2220/305
Using a light beam to detect key, pedal or note actuation
Official title: using a light beam to detect key, pedal or note actuation
G10H2220/305 (Using a light beam to detect key, pedal or note actuation) appears on 99 US grants and 90 published applications in this corpus.
Search patents in G10H- Granted patents
- 99
- Published applications
- 90
- Assignees
- 27
- Inventors
- 119
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 3 |
| 2002 | 4 | 3 |
| 2003 | 0 | 2 |
| 2004 | 3 | 3 |
| 2005 | 5 | 7 |
| 2006 | 2 | 7 |
| 2007 | 6 | 1 |
| 2008 | 1 | 6 |
| 2009 | 6 | 7 |
| 2010 | 7 | 8 |
| 2011 | 8 | 3 |
| 2012 | 4 | 6 |
| 2013 | 3 | 3 |
| 2014 | 7 | 1 |
| 2015 | 1 | 1 |
| 2016 | 2 | 1 |
| 2017 | 1 | 3 |
| 2018 | 2 | 11 |
| 2019 | 8 | 6 |
| 2020 | 9 | 4 |
| 2021 | 3 | 0 |
| 2022 | 2 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 2 |
| 2025 | 0 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Key depression amount sensor device28 Jul 2026US 12,693,111 B2Sony Group Corporation
- Sound source, keyboard musical instrument, and method for generating sound signal4 Jul 2023US 11,694,665 B2Yamaha Corporation
- System and method for generating musical score13 Dec 2022US 11,527,223 B2Sunland Information Technology Co., Ltd.
- Systems and methods for calibrating a musical device10 May 2022US 11,328,618 B2Sunland Information Technology Co., Ltd.
- System and method for music score simplification17 Aug 2021US 11,094,216 B2Sunland Information Technology Co., Ltd.
- Key depression amount sensor device29 May 2025US 2025/0172382 A1Sony Group Corporation
- Tone control device for digital piano6 Feb 2025US 2025/0046282 A1
- Musical instrument teaching system and method, and readable storage medium27 Jun 2024US 2024/0212519 A1
- Pedal unit and electronic keyboard apparatus18 Jan 2024US 2024/0021182 A1Yamaha Corporation
- System and method for generating musical score22 Oct 2020US 2020/0335072 A1Sunland Information Technology Co., Ltd.
Most cited
By later US patents
- Data input device79US 7,242,388 B2VKB Inc. · 2007
- Keyboard musical instrument having key monitor exactly discriminating key motion61US 5,824,930 AYamaha Corporation · 1998
- Smart detecting and feedback system for smart piano46US 10,629,175 B2Sunland Information Technology Co., Ltd. · 2020
- Keyboard musical instrument equipped with small simple economical key touch generator46US 5,977,466 AYamaha Corporation · 1999
- Velocity sensing device using opto-electronic switches32US 4,362,934 ASyntronics Music Corporation · 1982