Quotables
"Fooling around with alternating current is just a waste of time. Nobody will use it, ever."
Thomas Edison ; 1889
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8087037 | Optical pickup apparatus An optical-pickup apparatus includes first and second objective lenses that focus first and second laser light on information-recording layers of first and second optical discs, the second optical disc having an information-recording format different from that of th... | 12/27/2011 |
| 7921437 | Optical pick apparatus An optical pickup apparatus including a first objective lens that focuses first laser light on an information recording layer of a first optical disc in a first mounting state where the first optical disc is mounted on a turntable; a second objective lens that focus... | 04/05/2011 |
| 7350220 | Disk drive unit A disk drive unit advantageously prevents dust from adhering to a pickup. The disk drive unit has a housing and a tray. The tray reciprocates between a retracted position and a projected position. A first pickup and a second pickup have a spindle motor located there... | 03/25/2008 |
| 7334245 | Optical disk apparatus An optical disk drive is provided with an optical pickup and an optical sensor. The optical pickup is used for reading main information from an optical disk. The optical sensor is located in the range of R17 to R23 and used for reading sub information ... | 02/19/2008 |
| 7289417 | Lens correcting wavefront error caused by tilt and optical pickup using same An optical pickup having a plurality of objective lenses. At least one of the plurality of objective lenses is configured so that a type of wavefront error mainly generated by a tilt of the at least one of the plurality of objective lenses is the same as a type of a... | 10/30/2007 |
| 7260041 | Disk drive A disk drive includes a plurality of optical heads corresponding to a plurality kind of disks, and a disk distinction device for distinguishing whether a set disk is a first disk or a second disk when a disk is set on a disk tray, a first disk tray conveying mechani... | 08/21/2007 |
| 7219359 | Actuator used with an optical pickup An actuator for an optical pickup having a base on which a holder is fixed, a bobbin, a support member, and a magnetic circuit. Pluralities of installation holes are formed in the bobbin such that a plurality of objective lenses to record and/or reproduce optical di... | 05/15/2007 |
| 7188349 | Optical disk device An optical disc apparatus according to the present invention is equipped with a disc rotation mechanism for placing and rotating a disc, a plurality of optical heads for emitting light beams for recording and/or reproducing data on the optical disc, a transport unit... | 03/06/2007 |
| 7103896 | Mechanism to aid optical beam focusing on optical disc An optical disc of one embodiment of the invention is disclosed that includes a first surface, a second surface, an optically writable label area, and an optically writable data area. The first and the second surfaces are oppositely situated to one another. The labe... | 09/05/2006 |
| 7076791 | Optical pickup and optical disc apparatus provided with the same The invention provides an optical disc apparatus which restricts an operation sound generated from an objective lens driving portion of an optical pickup and has a reduce sound, in an optical disc apparatus, in particular, an optical disc apparatus installing a micr... | 07/11/2006 |
| 6895593 | Actuator having a plurality of objective lenses installed in a lens holder used with an optical pickup An actuator for an optical pickup having a base on which a holder is fixed, a bobbin, a support member, and a magnetic circuit. A plurality of installation holes are formed in the bobbin such that a plurality of objective lenses to record and/or reproduce optical di... | 05/17/2005 |
| 5721723 | Objective lens driving device, data recording device, and data reproducing device, all having driver force selectively 120 tutine and positioning the objective lenses An optical disk drive which is a data recording device or a data reproducing device having two movable members. The first movable member has two objective lenses on it. A magnetic circuit is secured to the second movable member to apply a magnetic field t... | 02/24/1998 |
| 5677904 | Disc player A disc player includes: a plurality of pickup devices for reading information from a disc; and a plurality of guide devices having a longitudinal axis for transferring the pickup device, the longitudinal axis being directed in a direction rotated by a pre... | 10/14/1997 |
| 5675566 | Recording and/or reproducing apparatus and a cartridge for a recording medium When an MO disc cartridge 2 is inserted upside down, the leading end of a cartridge body 80 abuts against plate-like protuberances 100 provided on a tray 13 for preventing the erroneous insertion, and the cartridge body cannot be inserted further. Accordi... | 10/07/1997 |
| 5027340 | Object lens head assembly An object lens head assembly for use with an optical recording disc comprises an information conversion apparatus for receiving an electrical signal bearing information to be written to the disc and outputting beams of light bearing the information to be ... | 06/25/1991 |
| 4888751 | Image information processing apparatus An image information processing apparatus comprises a rotational shaft for supporting five optical disks, subjected to read or write access, at predetermined intervals along its central axis, and two optical units, each having an optical head rotatable th... | 12/19/1989 |
