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| Number | Title | Issue Date |
| 7420780 | Thin laminated single pole perpendicular write head Single write poles tend to large shape anisotropy which results in a very large remnant field when not actually writing. This has now been eliminated by giving the write pole the form of a three layer laminate in which two ferromagnetic layers are separated by a non... | 09/02/2008 |
| 7328615 | Method and apparatus for detecting free fall of electronic device A method and apparatus for detecting a free fall of an electronic device. The method includes: sensing a falling acceleration of the electronic device using an acceleration sensor; determining whether the sensed falling acceleration is less than a predetermined thre... | 02/12/2008 |
| 7180425 | Drop detection device or abnormality detection device and portable apparatus equipped with said device The invention is aimed at preventing apparatus damage, loss of data, accidental firing of a firearm due to dropping or subjection to an impact, and other mishaps caused by accidental dropping or improper handling of the apparatus, firearm, etc. due to carelessness o... | 02/20/2007 |
| 7123432 | Servo writer with adjustment mechanism Disclosed is a low-cost servo writer with a simple adjusting mechanism, which can record/reproduce servo signals on or from magnetic tapes precisely, and which makes it possible to shorten the adjusting and maintenance time and to minimize the uneven wear of its hea... | 10/17/2006 |
| 6535356 | Head lifter and method of operation A read/write head assembly (20) is provided for use in a mass storage device such as a hard disk. drive. The read/write head assembly (20) is positioned on a suspension arm (18) and includes a read/write head (24) and a head lifter (22). The head lifter (... | 03/18/2003 |
| 6388844 | Head base shift mechanism in cassette tape recorder of automatic reverse tape Disclosed is a head base shift mechanism in an auto-reverse cassette tape recorder comprising a motor (2); a chassis (1) with a pair of capstans (41), (41') rotatable in forward and reverse directions; a head base (15) slidably mounted on the chassis and ... | 05/14/2002 |
| 6252364 | Method and apparatus for unlatching an actuator A method and apparatus for releasing an actuator from a latched position. A voice coil motor is operably coupled to the actuator which is held by a latch in a latched position. The voice coil motor is provided with a first current signal of increasing mag... | 06/26/2001 |
| 6191924 | Bearing for an actuator of a disc drive An improved bearing cartridge to rotationally couple an actuator block supporting a plurality of heads to a chassis of a disc drive. The improved bearing cartridge having increased radial stiffness and including first and second concentrically aligned elo... | 02/20/2001 |
| 4754352 | Magnetic drum recording apparatus A magnetic drum apparatus has a rotatable magnetic drum, a carriage adjacent the drum movable on a guide shaft along the drum axis, a magnetic head and slider assembly supported on the carriage, and a drive motor for the drum mounted in the inner chamber ... | 06/28/1988 |
| 4216506 | Card transport mechansim The present invention provides an improvement in a card reader type audio visual teaching device. The device employs a card handling mechanism for moving an information card which may contain both audio and visual information, across a record/playback tra... | 08/05/1980 |
| 4071857 | Cassette changer apparatus A cassette changer apparatus for use in a multiple cassette record and/or playback system. An input magazine stores a stack of cassettes, preferably in a vertical stack, each cassette housing magnetic tape therein. An output magazine is spaced from the in... | 01/31/1978 |
