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| Number | Title | Issue Date |
| 8020178 | Optical disk device having supported rotating arm An optical disk device has superior vibration characteristics by preventing vibration of a rotating arm. A desired optical disk is selected from the plurality of optical disks which are stacked and accommodated. The rotating arm is rotated to a working space provide... | 09/13/2011 |
| 7540004 | Ultra-small optical/magnetic head actuator with pivot hinge and Halbach magnet array An ultra-small optical/magnetic head actuator includes: a swing arm movable in a horizontal direction (tracking direction) and a vertical direction (focusing direction) and having mounted thereon a head for reading and writing information on a disk. A tracking actua... | 05/26/2009 |
| 7418723 | Optical pickup device and optical disk record/playback device for reducing the size of the record/playback device Space for an optical pickup at a position set aside from a disk accommodating section is to be compressed, thereby to reduce an overall size of an optical pickup device. For such a purpose, the optical pickup unit is held by a screw shaft and a guide shaft parallel ... | 08/26/2008 |
| 7418724 | Apparatus for changing multiple media disks A disk changer apparatus includes a rotation base on which a turntable and a head are mounted. The rotation base can rotate about the rear end thereof as a fulcrum. The disk changer apparatus further includes a base supporter opposed to the top end of the rotation b... | 08/26/2008 |
| 7345840 | Light delivery technique for heat assisted magnetic recording head A suspension arm for an optical transducer comprises a load beam, a slider coupled to the load beam by a gimbal assembly and including an optical transducer positioned adjacent to an end of the slider facing a pivot point of the suspension arm, and an optical fiber ... | 03/18/2008 |
| 7339858 | Disk device, and methods for checking, ejecting, and loading disk in disk device A disk device includes a disk tray capable of accommodating disks by stacking; a first driving motor for transferring the disk tray in the disk-stacking direction; a driving unit including an optical head for reading out data recorded in the disks, and a supporting ... | 03/04/2008 |
| 7337452 | Tilt focus mechanism for an optical drive An apparatus for dynamically positioning a rotary actuator that positions an objective lens in three dimensions relative to the surface of an optical disk. A first voice coil motor positions the actuator generally in two dimensions parallel to the surface of the dis... | 02/26/2008 |
| 7274530 | Logical mapping for improved head switching between corresponding tracks in a data handling device In a data handling system having a radially-dependent track incongruity between data surfaces, at least some tracks are logically mapped so that tracks on different data surfaces correspond with one another. The correspondence is defined by the mapping so as to shor... | 09/25/2007 |
| 7257828 | Optical head device An optical head device includes a base member having an attachment surface passing a laser beam of light reflected by an optical disk, a block in the form of a wedge having an attachment surface adjacent to that of the base member and an attachment surface opposite ... | 08/14/2007 |
| 7194746 | Tray device mechanism for optical disc apparatus A tray drive mechanism has a simple structure, and yet both an optical disc clamping operation and a tray opening and closing operation can be driven by one feed motor. The tray drive mechanism comprises: a feed gear and a tray drive gear that are rotated by ... | 03/20/2007 |
| 7194747 | Disc apparatus The disc apparatus according to the present invention comprises a base member (130), a chassis (140) pivotable with respect to the base member (130), a pickup unit (160) movably supported by the chassis (140) to be accessible to a ... | 03/20/2007 |
| 7146623 | Head support device and it's driving method, and drive disk using same The present invention provides a head support mechanism wherein the position can be accurately corrected at a high speed when the mode is shifted from reproducing to recording, and also, the deflection of recording magnetic field from the direction of initialized ma... | 12/05/2006 |
| 7123571 | Compound objective lens with fold mirror A compound objective lens includes a first lens element and a second lens element, the first element including a mirror surface for internally redirecting a radiation beam passing through the first element. The objective lens has a numerical aperture greater than 0.... | 10/17/2006 |
| 7096478 | Optical pickup device with elastic supporters and with dynamic vibration absorbing balance weight bonded in concave part with adhesive agent An optical pickup device includes a lens for projecting a light onto a recording medium, a lens holder elastically supported by a frame and holding said lens, an actuator mounted in and driving said lens holder, and a weight part balanced with a weight of said actua... | 08/22/2006 |
| 7093269 | Disk drive with hook disposed on clamp arm and/or playback base engaging groove formed in fixed base When a disk (1) is placed at a playback position, a clamp arm (15) clamps the disk (1). The clamp arm (15) has an engagement hook (16) for engaging with an engagement groove (12) of a fixed base (11) when the clamp ar... | 08/15/2006 |
| 7069569 | Near-field optical head system with integrated slider and laser A near-field optical system having one or more solid state lasers and an aerodynamically shaped slider which comprise a single integrated, monolithic device fabricated from the same base semiconductor material. The monolithic optical head can be quickly and easily a... | 06/27/2006 |
| 7050381 | Optical system having a convex surface for accessing a storage medium An optical system for accessing a storage medium. The system combines two kinds of laser diode, abandons some unnecessary optical elements used in the prior art, and further uses a Penta prism to fold the optical path. Moreover, the optical system uses a CZBO prism ... | 05/23/2006 |
| 6799323 | Rotary positioning stage A rotary positioning stage which enables a high speed and high precision positioning. The rotary positioning stage includes an arc-like portion 7a for forming an arc with respect to a rotation shaft 10, a rotary stage 2 on which a workpie... | 09/28/2004 |
| 5748605 | Rotary arm-type optical pick-up driving device An optical pick-up driving device includes: a base; a rotary arm installed with respect to the base and operative to rotate around a first guide pin; a rotation driving mechanism, arranged along the rotary arm and said base, for rotating the rotary arm; a... | 05/05/1998 |
| 5541908 | Actuator having a minimized payload in a optical recording system An optical recording system having a routing prism and an objective lens bonded together with a slider to form an integrated unit. A slider is attached to the end of an arm of a rotary actuator. Housed within the slider is a prism and an objective lens. T... | 07/30/1996 |
| 5521899 | Optical disk apparatus for mechanically restricting the distance between an optical disk and an optical head An optical disk cartridge and an optical disk apparatus wherein, whether or not an optical disk has a different thickness, the distances of a pair of optical heads to a pair of recording faces of the optical disk can be set readily with a high degree of a... | 05/28/1996 |
| 5475549 | Magnesium-beryllium disk drive armset An actuator armset for a computer disk drive, in accordance with one aspect of the present invention, is comprised of a magnesium alloy containing beryllium. The armset has a bore for rotating about a spindle of the disk drive to position a transducer rad... | 12/12/1995 |
| 5317559 | Dual pivot disc drive apparatus and method A dual pivot mechanism for a disc drive having a base plate and an actuator arm driven by a pinion for moving a transducer head across a disc to read and write to the disc. One end of the pivot arm is pivotally connected to the actuator arm opposite the p... | 05/31/1994 |
| 5216662 | Latch mechanism for disk drives A latch mechanism for locking an actuator arm in a disk drive includes a latch pivotably supported in the disk drive for engaging the actuator arm and an electromagnet for capturing and holding the latch to disengage the latch from the actuator arm. A spr... | 06/01/1993 |
| 5165090 | Swing-type actuator A swing-type actuator has (a) a housing including a pair of yokes and a permanent magnet attached to at least one of the yokes opposing each other for defining a magnetic gap therebetween; and (b) a swingable arm having at one end a hold member encompassi... | 11/17/1992 |
| 5134608 | Disk drive crash stop A disk drive having a disk stack and a movable actuator movable between position limits for moving one or more transducers between inner and outer radial limits with respect to the disk stack, established by a crash stop structure having at least one cras... | 07/28/1992 |
| 5130972 | Optical recording and reproducing apparatus An optical recording and reproducing apparatus includes a movable portion carrying a movable optical system, a sliding member slidable on a guide shaft, and a rotation limiting device engaged with an auxiliary guide shaft so as to limit the rotation of th... | 07/14/1992 |
| 4995025 | Spherical pivoting actuator for read/record head A low cost, low power, lightweight, low audible noise, high speed actuator for a read and/or record implement or portion thereof attached in a structure with a free end which is movable in multiple directions about essentially a single point of a pivot. I... | 02/19/1991 |
| 4794586 | Rotary access arm for optical disks A rotary access arm, e.g. for an optical disk has crossed voice coil actuators (6a,b) for in-plane and vertical movements, e.g. track and focus control; the actuators are secured to its distal end in close proximity to the focussing optical system (5a,b).... | 12/27/1988 |
| 4775907 | Radial access mechanism for disk recording/playback apparatus A radial access mechanism for translating, for example, the optical read/write head of an optical recording/playback apparatus relative to a rotating data storage disk to position such head adjacent a desired data track. Such mechanism basically comprises... | 10/04/1988 |
| 4686595 | Apparatus for repositioning a transducer in the absence of electrical current to a drive system A disk drive system includes a mechanism for positioning a movable transducer member in the absence of electrical power to the drive system. The mechanism includes a ferromagnetic lever arm pivotably positioned to engage a movable transducer member and, b... | 08/11/1987 |
| 4408311 | Optical tracking apparatus An optical tracking apparatus for tracing a spiral track on a recording disk includes an optical pickup device having a semiconductor laser and a photoelectric conversion element; an arm device pivotally mounted to an arm shaft with the pickup device bein... | 10/04/1983 |
| 4403316 | Swing-arm device for an optical scanning unit A swing-arm device (5) for an optical disk player comprises a swing arm (16), which near one end (17) carries an optical scanning unit (6) and which is electromagnetically pivoted by means of coils (27, 28) and a permanent magnetic stator (29, 30, 49-52, ... | 09/06/1983 |
