H04L 1/248
Distortion measuring systems
Official title: {Distortion measuring systems (measurement of non-linear distortion G01R23/20; measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time, duration G01R29/02)}
H04L1/248 (Distortion measuring systems) appears on 77 US grants and 58 published applications in this corpus.
Search patents in H04L- Granted patents
- 77
- Published applications
- 58
- Assignees
- 44
- Inventors
- 136
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 4 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 6 | 7 |
| 2014 | 10 | 5 |
| 2015 | 4 | 6 |
| 2016 | 5 | 5 |
| 2017 | 5 | 7 |
| 2018 | 11 | 8 |
| 2019 | 7 | 6 |
| 2020 | 4 | 4 |
| 2021 | 4 | 2 |
| 2022 | 5 | 1 |
| 2023 | 0 | 2 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and oscilloscopes for measuring jitter in digital signals17 Feb 2026US 12,556,321 B1Keysight Technologies, Inc.
- Automatic visual media transmission error assessment4 Nov 2025US 12,463,757 B2IMAX Corporation
- Dynamic configuration of DMRS5 Mar 2024US 11,923,991 B2QUALCOMM Incorporated
- In-vehicle information processing for unauthorized data9 Aug 2022US 11,411,681 B2Panasonic Intellectual Property Corporation of America
- Method and device for retransmission22 Mar 2022US 11,283,549 B2Intel Germany GmbH & Co. KG
- Systems and Methods for Generating Tunable Jitter6 Nov 2025US 2025/0343747 A1Kratos SRE, Inc.
- Indicating distortion information for a digital post distortion operation16 Nov 2023US 2023/0371055 A1QUALCOMM Incorporated
- Automatic visual media transmission error assessment12 Jan 2023US 2023/0010085 A1Ssimwave Inc.
- Dynamic configuration of dmrs26 May 2022US 2022/0166566 A1QUALCOMM Incorporated
- Digital predistortion training procedure for massive array16 Sep 2021US 2021/0288681 A1QUALCOMM Incorporated
Most cited
By later US patents
- Circuit and method of digital carrier detection for burst mode communication systems81US 5,199,049 AAT&T Bell Laboratories · 1993
- Cable tester53US 7,068,044 B1Marvell International Ltd. · 2006
- Device and method for determining characteristics of a digital subscriber line51US 7,006,445 B1Legerity, Inc. · 2006
- Cable tester49US 7,068,043 B1Marvell International Ltd. · 2006
- Cable tester23US 7,002,353 B1Marvell International Ltd. · 2006