G11B 7/08588
With position sensing by means of an auxiliary system using an external
Official title: {with position sensing by means of an auxiliary system using an external scale}
G11B7/08588 (With position sensing by means of an auxiliary system using an external) appears on 76 US grants and 21 published applications in this corpus.
Search patents in G11B- Granted patents
- 76
- Published applications
- 21
- Assignees
- 37
- Inventors
- 140
- Latest grant
- 17 Sep 2013
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 5 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 3 |
| 2004 | 2 | 7 |
| 2005 | 1 | 2 |
| 2006 | 2 | 4 |
| 2007 | 3 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Position control method of optical pickup head of optical disc drive and system thereof17 Sep 2013US 8,537,648 B1Philips & Lite-On Digital Solutions Corporation
- Optical disk drive5 Apr 2011US 7,921,435 B2Panasonic Corporation
- Optical disk labeling system and method2 Mar 2010US 7,671,880 B2Hewlett-Packard Development Company, L. P.
- Method and apparatus for determining position of optical pick-up head25 Nov 2008US 7,457,208 B2Mediatek Inc.
- Calibrating fine actuator using a reference pattern22 May 2007US 7,219,840 B2Hewlett-Packard Development Company, L. P.
- Optical beam positioning at radial location of optical disc using series of segments at edge of optical disc25 Apr 2013US 2013/0100790 A1Hewlett-Packard Development Company, L. P.
- Long seek control system and method thereof used in optical information reproduction/recording system25 Aug 2011US 2011/0205873 A1Novatek Microelectronics Corp.
- Optical disk device22 Oct 2009US 2009/0262625 A1
- Optical Disk Drive20 Nov 2008US 2008/0285421 A1Panasonic Corporation
- Optical disc drive and method of controlling actuator27 Sep 2007US 2007/0223327 A1
Most cited
By later US patents
- Optical disc access method and optical disk storage using coarse and fine actuators82US 4,866,687 AHitachi, Ltd. · 1989
- Optical memory apparatus50US 4,607,358 AHitachi, Ltd. · 1986
- Controlling head seeking speed in disk storage units by limiting displacement of head with respect to its supporting headarm48US 5,060,210 AInternational Business Machines Corporation · 1991
- Carriage fixing apparatus and disk driver having such carriage fixing apparatus46US 5,231,615 ATEAC Corporation · 1993
- Optical read apparatus for reading a disc-shaped record carrier42US 4,236,232 AU. S. Philips Corporation · 1980