G11B 20/00253
Wherein the key is stored on the record carrier
Official title: {wherein the key is stored on the record carrier}
G11B20/00253 (Wherein the key is stored on the record carrier) appears on 846 US grants and 971 published applications in this corpus.
Search patents in G11B- Granted patents
- 846
- Published applications
- 971
- Assignees
- 183
- Inventors
- 1,164
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 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 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 6 | 0 |
| 1998 | 17 | 0 |
| 1999 | 18 | 0 |
| 2000 | 17 | 0 |
| 2001 | 21 | 14 |
| 2002 | 22 | 77 |
| 2003 | 33 | 79 |
| 2004 | 37 | 101 |
| 2005 | 28 | 122 |
| 2006 | 72 | 89 |
| 2007 | 67 | 123 |
| 2008 | 77 | 106 |
| 2009 | 85 | 85 |
| 2010 | 71 | 65 |
| 2011 | 75 | 29 |
| 2012 | 60 | 29 |
| 2013 | 40 | 17 |
| 2014 | 37 | 10 |
| 2015 | 18 | 8 |
| 2016 | 7 | 3 |
| 2017 | 6 | 0 |
| 2018 | 6 | 5 |
| 2019 | 2 | 2 |
| 2020 | 3 | 2 |
| 2021 | 2 | 2 |
| 2022 | 2 | 0 |
| 2023 | 2 | 1 |
| 2024 | 2 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
- G11B 20/00297The key being stored in a management area193
- G11B 20/00347Wherein the medium identifier is used as a key156
- G11B 20/0026The key being stored as a barcode152
- G11B 20/00362The key being obtained from a media key block [mkb]114
- G11B 20/00405The key being stored by varying characteristics of the recording track107
- G11B 20/00326The key being embossed on the record carrier77
- G11B 20/00376The key being stored by varying the pit format75
- G11B 20/00282The key being stored in the content area74
All 16 subgroupsShow fewer
- G11B 20/00333The key being stored in header data55
- G11B 20/00275The key being stored on a chip attached to the record carrier53
- G11B 20/00384The key being derived from a physical signature of the record carrier43
- G11B 20/00369Wherein a first key, which is usually stored on a hidden channel9
- G11B 20/00391The key being stored in subcodes3
- G11B 20/00355The record carrier having a label that provides the key2
- G11B 20/00398The key being stored in sync patterns1
- G11B 20/0034The key being stored as a hologram0
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.
- 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.
- Object identification and device communication through image and audio signals4 Nov 2021US 2021/0342588 A1Digimarc Corporation
- Authenticating digital recordings20 May 2021US 2021/0151081 A1International Business Machines Corporation
Most cited
By later US patents
- Media content protection utilizing public key cryptography501US 6,550,011 B1Hewlett-Packard Development Company, L. P. · 2003
- Multi-media copy management system382US 5,963,909 ASolana Technology Development Corporation · 1999
- Integrating digital watermarks in multimedia content374US 6,611,607 B1Digimarc Corporation · 2003
- Copy security for portable music players345US 6,367,019 B1Liquid Audio, Inc. · 2002
- Multi-media copy management system333US 5,719,937 ASolana Technology Develpment Corporation · 1998