G11B 20/00492
Wherein content or user data is encrypted
Official title: {wherein content or user data is encrypted}
G11B20/00492 (Wherein content or user data is encrypted) appears on 605 US grants and 707 published applications in this corpus.
Search patents in G11B- Granted patents
- 605
- Published applications
- 707
- Assignees
- 160
- Inventors
- 937
- Latest grant
- 25 Apr 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 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 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 8 | 0 |
| 2000 | 11 | 0 |
| 2001 | 17 | 10 |
| 2002 | 19 | 45 |
| 2003 | 20 | 77 |
| 2004 | 21 | 68 |
| 2005 | 19 | 80 |
| 2006 | 50 | 68 |
| 2007 | 42 | 83 |
| 2008 | 49 | 71 |
| 2009 | 48 | 67 |
| 2010 | 54 | 42 |
| 2011 | 61 | 24 |
| 2012 | 51 | 28 |
| 2013 | 37 | 15 |
| 2014 | 36 | 5 |
| 2015 | 19 | 6 |
| 2016 | 9 | 5 |
| 2017 | 4 | 2 |
| 2018 | 5 | 3 |
| 2019 | 1 | 1 |
| 2020 | 5 | 5 |
| 2021 | 0 | 0 |
| 2022 | 2 | 1 |
| 2023 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
- G11B 20/00528Wherein each title is encrypted with a separate encryption key for each186
- G11B 20/00507Wherein consecutive physical data units of the record carrier are encrypted with156
- G11B 20/00536Wherein encrypted content data is subjected to a further, iterated encryption84
- G11B 20/00514Wherein the entire content is encrypted with the same key69
- G11B 20/00521Wherein each session of a multisession recording medium is encrypted with a27
- G11B 20/005Wherein only some specific parts of the content are encrypted15
Recent patents
- Content recording apparatus, content editing apparatus, content reproduction apparatus, content recording method, content editing method, and content reproduction method25 Apr 2023US 11,636,877 B2Panasonic Intellectual Property Management Co., Ltd.
- Content recording apparatus, content editing apparatus, content reproduction apparatus, content recording method, content editing method, and content reproduction method13 Sep 2022US 11,443,768 B2Panasonic Intellectual Property Management Co., Ltd.
- Method of playing system stream files with different recording formats1 Feb 2022US 11,238,897 B2Panasonic Intellectual Property Corporation of America
- Method of playing system stream files with different recording formats13 Oct 2020US 10,803,901 B2Panasonic Intellectual Property Corporation of America
- Information processing device and information processing method14 Jul 2020US 10,713,336 B2Sony Corporation
- Protection against executing injected malicious code27 Apr 2023US 2023/0126908 A1International Business Machines Corporation
- Content recording apparatus, content editing apparatus, content reproduction apparatus, content recording method, content editing method, and content reproduction method24 Nov 2022US 2022/0375499 A1Panasonic Intellectual Property Management Co., Ltd.
- Method of playing system stream files with different recording formats31 Dec 2020US 2020/0411045 A1Panasonic Intellectual Property Corporation of America
- Content recording apparatus, content editing apparatus, content reproduction apparatus, content recording method, content editing method, and content reproduction method31 Dec 2020US 2020/0411046 A1Panasonic Intellectual Property Management Co., Ltd.
- Method of playing system stream files with different recording formats7 May 2020US 2020/0143833 A1Panasonic Intellectual Property Corporation of America
Most cited
By later US patents
- Multi-media copy management system382US 5,963,909 ASolana Technology Development Corporation · 1999
- Multi-media copy management system333US 5,719,937 ASolana Technology Develpment Corporation · 1998
- Method and apparatus for selectively recording a broadcast306US 4,305,101 ACodart, Inc. · 1981
- Audio or video steganography281US 6,266,430 B1Digimarc Corporation · 2001
- Method and apparatus for copy protection258US 6,523,113 B1Apple Computer, Inc. · 2003