G11B 20/00376
The key being stored by varying the pit format
Official title: {the key being stored by varying the pit format, e.g. depth, width, length or edge positions}
G11B20/00376 (The key being stored by varying the pit format) appears on 75 US grants and 70 published applications in this corpus.
Search patents in G11B- Granted patents
- 75
- Published applications
- 70
- Assignees
- 12
- Inventors
- 34
- Latest grant
- 17 Jun 2014
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| 2007 | 10 | 7 |
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Recent patents
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- Information Recording Medium, Method and Apparatus for Recording and Reproducing Information2 May 2013US 2013/0107682 A1Victor Company of Japan, Ltd.
- Optical disk reproduction apparatus, optical disk reproduction method, reproduction processing device and reproduction processing method19 Apr 2012US 2012/0096326 A1Panasonic Corporation
- Optical disc recording apparatus, optical disc recording circuit and optical disc13 Jan 2011US 2011/0007616 A1Panasonic Corporation
- Information recording medium, method and apparatus for recording and reproducing information2 Dec 2010US 2010/0302918 A1Victor Company of Japan, Ltd.
- Optical disc, playback apparatus for optical disc, and apparatus and method for manufacturing optical disc11 Nov 2010US 2010/0284253 A1Panasonic Corporation
Most cited
By later US patents
- Recording apparatus, recording medium, playback apparatus, recording method and playback method40US 6,587,948 B1Sony Corporation · 2003
- Recording medium for storing write protection information and write protection method thereof38US 6,724,705 B1Samsung Electronics Co., Ltd. · 2004
- Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disk31US 6,665,240 B1Sony Corporation · 2003
- Information recording medium method and apparatus for recording and reproducing information28US 6,678,236 B1Victor Company of Japan, Ltd. · 2004
- Recording medium for storing write protection information and write protection method thereof21US 6,765,853 B1Samsung Electronics Co., Ltd. · 2004