G11B 20/00217
The cryptographic key used for encryption and/or decryption of contents recorded on
Official title: {the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source (key distribution or management H04L9/08)}
G11B20/00217 (The cryptographic key used for encryption and/or decryption of contents recorded on) appears on 1,132 US grants and 1,288 published applications in this corpus.
Search patents in G11B- Granted patents
- 1,132
- Published applications
- 1,288
- Assignees
- 257
- Inventors
- 1,596
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 7 | 0 |
| 1996 | 8 | 0 |
| 1997 | 8 | 0 |
| 1998 | 26 | 0 |
| 1999 | 24 | 0 |
| 2000 | 22 | 0 |
| 2001 | 27 | 20 |
| 2002 | 31 | 97 |
| 2003 | 42 | 110 |
| 2004 | 46 | 129 |
| 2005 | 34 | 149 |
| 2006 | 92 | 125 |
| 2007 | 87 | 158 |
| 2008 | 101 | 130 |
| 2009 | 98 | 107 |
| 2010 | 103 | 83 |
| 2011 | 92 | 39 |
| 2012 | 76 | 37 |
| 2013 | 51 | 28 |
| 2014 | 53 | 17 |
| 2015 | 32 | 16 |
| 2016 | 15 | 8 |
| 2017 | 8 | 4 |
| 2018 | 11 | 8 |
| 2019 | 6 | 5 |
| 2020 | 12 | 10 |
| 2021 | 3 | 3 |
| 2022 | 6 | 1 |
| 2023 | 2 | 1 |
| 2024 | 2 | 1 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G11B 20/00253Wherein the key is stored on the record carrier846
- G11B 20/00246Wherein the key is obtained from a local device266
- G11B 20/00224Wherein the key is obtained from a remote server211
- G11B 20/00231Wherein the key is obtained from a local external medium78
- G11B 20/00413Wherein the key is input by a user26
- G11B 20/00239Wherein the key is provided by a software application accessing the medium2
Recent patents
- Internal storage in cloud disk to support encrypted hard drive and other stateful features14 Oct 2025US 12,443,543 B2Google Inc.
- Object identification and device communication through image and audio signals18 Jun 2024US 12,014,408 B2Digimarc Corporation
- Internal storage in cloud disk to support encrypted hard drive and other stateful features7 May 2024US 11,977,492 B2Google Inc.
- Authenticating digital recordings3 Oct 2023US 11,776,574 B2International Business Machines Corporation
- Infernal storage in cloud disk to support encrypted hard drive and other stateful features4 Jul 2023US 11,693,792 B2Google Inc.
- Transfer stations and methods for transferring autonomous vehicle sensor data to a remote data storage server22 Jan 2026US 2026/0024380 A1TORC Robotics, Inc.
- Object identification and device communication through image and audio signals22 May 2025US 2025/0166035 A1Digimarc Corporation
- Internal Storage In Cloud Disk To Support Encrypted Hard Drive And Other Stateful Features5 Dec 2024US 2024/0403229 A1Google Inc.
- Internal Storage In Cloud Disk To Support Encrypted Hard Drive And Other Stateful Features30 Nov 2023US 2023/0385205 A1Google Inc.
- System and method for encrypted disk drive sanitizing24 Feb 2022US 2022/0059130 A1Whitecanyon Software, Inc.
Most cited
By later US patents
- Method and apparatus for marking the information content of an information carrying signal527US 4,528,588 A1985
- Digital watermarks and methods for security documents503US 6,345,104 B12002
- Media content protection utilizing public key cryptography501US 6,550,011 B1Hewlett-Packard Development Company, L. P. · 2003
- Method and apparatus for marking the information content of an information carrying signal471US 4,595,950 A1986
- Multi-media copy management system382US 5,963,909 ASolana Technology Development Corporation · 1999