H03K 4/501
The starting point of the flyback period being determined by the amplitude
Official title: the starting point of the flyback period being determined by the amplitude of the voltage across the capacitor, e.g. by a comparator
H03K4/501 (The starting point of the flyback period being determined by the amplitude) appears on 306 US grants and 224 published applications in this corpus.
Search patents in H03K- Granted patents
- 306
- Published applications
- 224
- Assignees
- 192
- Inventors
- 556
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 7 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 7 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 3 | 3 |
| 2003 | 6 | 5 |
| 2004 | 2 | 3 |
| 2005 | 7 | 9 |
| 2006 | 5 | 7 |
| 2007 | 5 | 5 |
| 2008 | 7 | 11 |
| 2009 | 10 | 11 |
| 2010 | 10 | 21 |
| 2011 | 20 | 14 |
| 2012 | 15 | 19 |
| 2013 | 11 | 13 |
| 2014 | 23 | 11 |
| 2015 | 12 | 10 |
| 2016 | 14 | 5 |
| 2017 | 8 | 9 |
| 2018 | 5 | 9 |
| 2019 | 15 | 16 |
| 2020 | 24 | 13 |
| 2021 | 10 | 4 |
| 2022 | 6 | 9 |
| 2023 | 6 | 6 |
| 2024 | 8 | 3 |
| 2025 | 4 | 3 |
| 2026 | 0 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Oscillators having comparators therein with improved common mode variation across a wide range of process-voltage-temperature (PVT) changes11 Nov 2025US 12,470,172 B2Samsung Electronics Co., Ltd.
- Feedback current depended ramp generator for switched mode power supply21 Oct 2025US 12,451,805 B2GLOBALFOUNDRIES U. S. Inc.
- RC oscillator20 May 2025US 12,308,839 B2Gigadevice Semiconductor Inc.
- Low power current integration DAC ramp settling assist circuit11 Mar 2025US 12,250,485 B2OmniVision Technologies, Inc.
- Signal transmission device, electronic device, and vehicle12 Nov 2024US 12,143,100 B2Rohm Co., Ltd.
- Clock generating mechanism capable of mitigating clock glitches of digital circuit by selecting good/better timing to output received frequency control signal10 Sep 2026US 2026/0269812 A1Pixart Imaging Inc.
- Integrated circuit configured to generate a pulse width modulated signal6 Aug 2026US 2026/0230081 A1STMicroelectronics International N. V.
- Smart time control for switching among various phases of a device via a single capacitor28 May 2026US 2026/0149443 A1
- Trimming technique for oscillators2 Apr 2026US 2026/0095124 A1Nordic Semiconductor ASA
- Trimming technique for oscillators2 Apr 2026US 2026/0095163 A1Nordic Semiconductor ASA
Most cited
By later US patents
- Automatic brightness control apparatus76US 4,514,727 ATRW Inc. · 1985
- Vertical ramp automatic amplitude control38US 5,394,020 AZenith Electronics Corporation · 1995
- Voltage controlled oscillator using flip-flop controlled switching circuits32US 4,623,851 AKabushiki Kaisha Toshiba · 1986
- Method and circuit for comparator-less generation of ramped voltage having controlled maximum amplitude28US 6,339,349 B12002
- Electronic oscillation counting timer25US 4,407,588 AOmron Tateisi Electronics Co. · 1983