G11B 20/00528
Wherein each title is encrypted with a separate encryption key for each
Official title: {wherein each title is encrypted with a separate encryption key for each title, e.g. title key for movie, song or data file}
G11B20/00528 (Wherein each title is encrypted with a separate encryption key for each) appears on 186 US grants and 212 published applications in this corpus.
Search patents in G11B- Granted patents
- 186
- Published applications
- 212
- Assignees
- 63
- Inventors
- 326
- Latest grant
- 25 Apr 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 7 | 0 |
| 2001 | 10 | 3 |
| 2002 | 8 | 18 |
| 2003 | 11 | 25 |
| 2004 | 6 | 27 |
| 2005 | 6 | 17 |
| 2006 | 12 | 12 |
| 2007 | 14 | 27 |
| 2008 | 15 | 28 |
| 2009 | 11 | 13 |
| 2010 | 14 | 14 |
| 2011 | 20 | 11 |
| 2012 | 16 | 9 |
| 2013 | 14 | 6 |
| 2014 | 9 | 0 |
| 2015 | 5 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
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.
- Reducing errors in sending file attachments7 Jun 2016US 9,361,933 B2International Business Machines Corporation
- Information processing apparatus, information processing system, information processing method, and program27 Oct 2015US 9,171,570 B2Sont Corporation
- Information processing apparatus, information processing method and program9 Jun 2015US 9,053,739 B2Sony 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.
- 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.
- Information recording medium, information recording/playback method, and information recording/playback apparatus21 Nov 2013US 2013/0308923 A1Kabushiki Kaisha Toshiba
- Playback device, playback method and program25 Jul 2013US 2013/0188028 A1Panasonic Corporation
- Recording medium apparatus and controller6 Jun 2013US 2013/0145481 A1Panasonic Corporation
Most cited
By later US patents
- Method and apparatus for copy protection258US 6,523,113 B1Apple Computer, Inc. · 2003
- Digital video recorder employing a file system encrypted using a pseudo-random sequence generated from a unique ID161US 6,851,063 B1Keen Personal Media, Inc. · 2005
- Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system144US 6,938,162 B1Matsushita Electric Industrial Co., Ltd. · 2005
- Optical disk, optical recorder, optical reproducer, crytocommunication system and program license system125US 6,081,785 AMatsushita Electric Industrial Co., Ltd. · 2000
- Software copying system124US 5,805,699 AFujitsu Limited · 1998