| Patent Number |
Title Of Patent |
Date Issued |
| D570799 |
Side view type light emitting diode |
June 10, 2008 |
|
| D549187 |
Light emitting diode (LED) package |
August 21, 2007 |
|
| 7440361 |
Optical pickup apparatus |
October 21, 2008 |
| An optical pickup apparatus including a swing arm pivotably installed in a tracking direction with respect to a disc, and an optical pickup unit supported by the swing arm and driven in a focusing direction, wherein the optical pickup unit includes a laser diode, an objective lens to |
| 7333404 |
Actuator for mobile optical recording/reproducing apparatus |
February 19, 2008 |
| An actuator to be used in a mobile optical recording/reproducing apparatus, the actuator including a holder; a movable member having an objective lens to focus an incident light; a support member positioned between the holder and the movable member, by which the movable member is mov |
| 7272840 |
Objective lens driving apparatus used with an optical pickup |
September 18, 2007 |
| An objective lens driving apparatus used with an optical pickup includes a base, a holder provided on the base, a blade on which an objective lens is mounted, an elastic support body elastically supporting the blade and which is capable of moving with respect to the holder, a pair of mag |
| 7131128 |
Optical actuator |
October 31, 2006 |
| An optical pickup actuator for use with a recording medium includes a swing arm pivoting in a tracking direction with respect to the recording medium, a first driving unit pivoting the swing arm, an optical pickup facing the recording medium, an elastic member having one end fixed to |
| 7102836 |
Objective lens driving apparatus for optical pickup |
September 5, 2006 |
| An objective lens driving apparatus for an optical pickup includes a blade on which an objective lens can be mounted, a plurality of elastic support members supporting the blade and capable of elastically moving with respect to the blade, and a servo mechanism driving the blade up and |
| 7062774 |
Optical pickup for optical disk drive and driving method thereof |
June 13, 2006 |
| An optical pickup and driving method for an optical disk drive holding an optical disk includes a base, an object lens, and a slider supporting the object lens, where the object lens focuses a light on a recording surface of the optical disk. An optical head section includes the slider, |
| 7038977 |
Optical pickup actuator |
May 2, 2006 |
| An optical pickup actuator includes a base having a holder installed at one side thereof, a moving portion in which an objective lens is installed at the periphery thereof and a guide hole is formed, a bobbin coupled to the guide hole, a magnetic driving portion provided at the base |
| 7032231 |
Optical pickup device |
April 18, 2006 |
| An optical pickup having a blade including a first blade in which an objective lens is mounted and which is made of a reinforced plastics material, and a second blade in which driving coils are mounted and which is made of a magnesium alloy material. Since the first blade has a low t |
| 7026902 |
Magnet used with an optical pickup actuator |
April 11, 2006 |
| Magnets, which have a surface facing a coil, through which current flows, generate magnetic flux to be emitted toward the coil in the direction of the normal line of the surface of the magnets toward the coil, the magnets having a recession or protrusion formed at the center thereof. |
| 6917480 |
Apparatus to drive objective lens of an optical pickup |
July 12, 2005 |
| An apparatus to drive a blade on which an objective lens is mounted including a first electromagnetic unit to generate a first electromagnetic force and a second electromagnetic unit to generate a second electromagnetic force such that when the first and second magnitudes are the sam |
| 6857127 |
Actuator used with an optical pickup having plate coils and magnets |
February 15, 2005 |
| An actuator used with an optical pickup to drive a blade, on which an objective lens is mounted, in focusing and tracking directions, includes a pair of magnets installed on a base, and a plate coil installed in the blade to be placed between the magnets. Each magnet has a shape in which |
| 6847499 |
Optical head and method of adjusting optical path thereof |
January 25, 2005 |
| An optical head includes a substrate, a laser diode, a photodetector, an objective lens, a prism, and an optical element. The laser diode is installed on the substrate and emits light. The photodetector is installed on the substrate and receives the light. The objective lens is installed |
| 5422557 |
Method and apparatus for controlling the speed of a single phase induction motor using frequency |
June 6, 1995 |
| A method for controlling speed of a single phase induction motor using frequency variation, including the steps of generating an operation start signal and a speed command signal according to a user's selection, outputting a digital data for formation of a sinusoidal wave signal of a |
| 5304909 |
Resolver excitation signal generating apparatus |
April 19, 1994 |
| The present invention relates to a resolver excitation signal generating apparatus for supplying a reference excitation signal to a resolver attached to a motor for driving a robot or a computer numerical control machine. When a sine-wave signal is transferred from a signal generator to |
| 5272424 |
Generating device of phase current instruction value for alternating current servomotor and the |
December 21, 1993 |
| A generating device of a phase current instruction value for an A.C. servomotor and the generating method thereof, drives a synchronous A.C. servomotor. A sine wave, namely, a phase current instruction value for commutation of the A.C. servomotor driver can be generated by receiving as |
