Patent application number | Description | Published |
20100077417 | Optical Disk Drive Capable of Inhibiting Vibration of Optical Disk - An optical disk drive is disclosed. The distance between the surface of the optical disk and the inner upper surface of the optical disk drive is less than 3.5 mm while performing the data reading or writing procedures on the optical disk loaded in the optical disk drive. | 03-25-2010 |
20100083293 | Optical Disk Drive with Protection Design Against Broken Disk - An optical disk drive with a protection design against a broken disk comprises the following devices of: a chassis; an upper cover mounted above the chassis; a tray mounted between the chassis and the upper cover for supporting an optical disk; a faceplate mounted on the front end of the upper cover and having a first inclined plane; a door mounted on the front end of the tray and having a second inclined plane with a gap opposite to the first inclined plane for forming an inclined directed channel between the faceplate and the door. | 04-01-2010 |
20100083294 | Method for Reading/Writing Data for a Disk Drive - A method for reading/writing data of a disk drive that includes a spindle motor for rotating a disk and a head for reading/writing data from and to the disk. The method includes the steps of; (i) adjusting a position of the head for the first time to space apart the head from a center of the disk at a specific distance, wherein when the head is spaced apart from the center of the disk at the specific distance, the disk vibrates at the minimum magnitude during raising operation of the spindle motor from a low speed to a high speed; (ii) raising the spindle motor from the low speed to the high speed; and (iii) adjusting a position of the head for the second time to move the head to a desired track in the disk for reading/writing data in the desired track. | 04-01-2010 |
20100211964 | SPINDLE MOTOR AND OPTICAL DISC DRIVE HAVING THE SAME - A spindle motor includes a base plate, a stator, and a rotor. The base plate has a plurality of air-guiding holes. The stator includes a bearing portion and a plurality of coil portions. The bearing portion is fixed on the base plate. The coil portions are connected to and surrounded the bearing portion, and are disposed above the air-guiding holes. The rotor is rotatably mounted to the bearing portion and disposed adjacent the coil portions. | 08-19-2010 |
20110283301 | Optical Disk Drive with Protection Design Against Broken Disk - An optical disk drive with a protection design against a broken disk comprises the following devices of: a chassis; an upper cover mounted above the chassis and having a bended part on a front end thereof; a tray mounted between the chassis and the upper cover for supporting an optical disk; a faceplate mounted on the front end of the upper cover; a door mounted on the front end of the tray; a double-layered retaining plate having a first retaining plate and a second retaining plate located respectively on both front and rear sides of the bended part. The bended part is located behind the faceplate, and a space is formed between the bended part and the faceplate | 11-17-2011 |
Patent application number | Description | Published |
20150136518 | COMPOSITE DIAPHRAGM - Provided is a composite diaphragm which includes a base layer and at least a graphyne including layer. The base layer has a central portion and a peripheral portion disposed at the periphery of the central portion. The graphyne including layer is disposed on the surface of the base layer. As graphyne is a lightweight and highly rigid material with a two-dimensional structure, composite diaphragms made of graphyne manifest characteristics, such as high stiffness, high toughness and low density, and thus achieve high practicability, such as high durability and high capability of producing high-definition tone. | 05-21-2015 |
20150139479 | MAGNETIC CIRCUIT AND COAXIAL SPEAKER USING THE SAME - A magnetic circuit for coaxial speaker includes a first magnetic unit, at least one second magnetic unit arranged around the first magnetic unit and at least one third magnetic unit arranged around the at least one second magnetic unit. The magnetic pole arrangement of the second magnetic unit is reversed to the magnetic pole arrangement of the first magnetic unit and the second magnetic unit, enabling a first magnetic loop to be established between the first magnetic unit and the at least one second magnetic unit and a second magnetic loop to be established between the at least one second magnetic unit and the at least one third magnetic unit. The magnetic circuit is practical for use in the inner and outer drivers of a coaxial speaker, providing uniform magnetic field distribution, and facilitating speaker miniaturization. | 05-21-2015 |
20150213932 | EXTERNAL-MAGNET-TYPE MAGNETIC CIRCUIT - An external-magnet-type magnetic circuit includes an iron core and at least one composite magnet coaxially mounted around the iron core. The composite magnet has two magnetic poles with field directions thereof substantially perpendicular to each other, wherein one of the magnetic poles has the field direction thereof pointing to the iron core, and a magnetism-guiding plate being deposited on the other magnetic pole of the composite magnet and being separated from the iron core by a magnetic gap. Thereby, the composite magnet provides high magnetic flux density in relatively small volume, without the additional use of any magnetism-guiding yokes, and thus is particularly suitable for small-size amplifiers where it helps to improve acoustic sensitivity and acoustic output performance. | 07-30-2015 |
20150281843 | DIAPHRAGM SURROUND MANUFACTURING METHOD AND DIAPHRAGM APPLICABLE THERETO - A diaphragm surround manufacturing method includes: mixing a molten plastic and a gas in supercritical fluid state in a feed pipe of an injector to form a mixture; filling a die with the mixture thus formed and controlling pressure and temperature of the die to cause the gas to diffuse and nucleate inside the die and develop a plurality of bubbles; and reducing the temperature of the die to cause the plastic to cure and form a microcellular foam structure. Accordingly, the surround manufactured by the manufacturing method has equal foam cell diameters and uniform foam cell distribution so as to enhance the tensile strength of the surround, enable a diaphragm with the surround to perform well at low frequencies, and extend the service life of the diaphragm. | 10-01-2015 |