Abstract: A magnetic suspension bearing with damping system includes a stator having a stator magnetic unit mounted on the internal portion of the stator, and a rotor rotatably located at the stator. A rotor magnetic unit installed on the rotor corresponding to the stator magnetic. The rotor further has a yoke having a magnetic driving unit corresponding to the external portion of the stator. A magnetic damping device located has a magnetic unit and an elastic unit, wherein the magnetic unit corresponding to the magnetic driving unit generates magnetic force between them, and the elastic unit coupled below the magnetic unit uses to reduce the vibration of the magnetic unit for maintaining the rotation of the rotor smooth and steady.

Abstract: A spin transistor uses a single potential barrier structure to increase a current fluctuation rate. The spin transistor may include at least one of an emitter, a collector, a base and a base resistor. The emitter may be a magneto-resistant device, which may provide an adjustable resistance based on a magnetic field. The collector may be a passive device which may provide the single potential barrier. The base may placed between the emitter and the collector, and may couple the emitter with the collector. The base resistor may be connected to the base in order to provide a bias.

Abstract: A magneto-resistance transistor including a magneto-resistant element which may function as an emitter and a passive element which may function as a collector. The base may be interposed between the passive element and the magneto-resistant element, thereby coupling the passive element with the magneto-resistant element. A magnetic field of a given strength may be applied to at least a portion of the magneto-resistant transistor, the given strength determining a resistance in the at least a portion of the magneto-resistant transistor. Thus, by adjusting the given strength of the magnetic field, the resistance may be adjusted. Therefore, different emitter current inputs may be achieved with a fixed voltage. Further, a base current may vary with a controlled variation of the emitter current input.

Abstract: A method is proposed to manufacture a precise multi-pole magnetic component for using in magnetic encoders. A special layout of the circuit pattern is designed and formed on a printed circuit board (PCB). Alternate and regular magnetic field is induced according to Ampere's law after a current flowing through the circuit on the PCB. The multi-pole magnetic component with fine magnetic pole pitch is achieved by forming the high-density circuit patterns on a substrate using the PCB technology.

Abstract: This specification disclosed a method of determining the disc type for a disc burner to determine the type of an unfinalized disc. By checking the special bit data in the first and second tracks, the discs can be classified into different types. This avoids the trouble of manually keeping track of the type of each disc.

Abstract: A high density thermal recording and magnetic reading recording medium and system combines near-field optical recording and the sensitive reading technique of the magneto-resistive head to overcome the restriction of optical diffraction limitation to increase the density of the recording medium. It mainly has sub-micro cylindrical lenses directly formed on the substrate of the recording medium to enable a near-field optical laser to write and generate smaller optical spots thereby to achieve smaller recording bits and increase the recording density.

Abstract: A method provides efficient data transmission between an input-output card with an add-on memory card and a host system. The input-output card carrying an inserted memory card is connected with the host system to improve the mechanical strength of the arrangement. An input-output controller on the input-output card controls a switch that switches between data buses. The memory card and the input-output card optionally share all data buses of the input-output card to transmit data with the host system, directly transmit data between each other, or respectively use a portion of them to achieve a better transmitting efficiency.

Abstract: A method is proposed to manufacture a precise multi-pole magnetic component for using in magnetic encoders. A special layout of the circuit pattern is designed and formed on a printed circuit board (PCB). Alternate and regular magnetic field is induced according to Ampere's law after a current flowing through the circuit on the PCB. The multi-pole magnetic component with fine magnetic pole pitch is achieved by forming the high-density circuit patterns on a substrate using the PCB technology.

Abstract: A production method of multi-layer information record carriers that involves forming a signal duplication layer on a substrate that contains signals, then replacing a metallic stamping plate with the substrate that comprises the signal duplication layer for manufacturing a signal layer of high molecular materials. After the signal layer has been subjected to curing by exposure to ultra violet light, the signal layer is separated from the signal duplication layer because of the difference between the adhesive forces of the different materials. Multi-layer information record carriers can be manufactured by repeating the manufacturing process. Since the manufacturing process of the invention is simple and speedy, it facilitates the creation of automated facilities for mass production.

Abstract: The specification discloses a fluorescent multi-layer recording medium containing porphyrin and the method for manufacturing it. The porphyrin is used to make the recording layer of the fluorescent multi-layer recording medium. A laser beam with a wavelength smaller than 500 nm is used as the light source. When a short-wavelength laser excites the recording layer containing porphyrin, it instantaneously emits red fluorescent light with a wavelength greater than 600 nm. A device can read data signals by detecting the intensity of such fluorescence.

Abstract: A high-density information storage medium has a shorter length of information bits and a smaller pitch of track. The storage capacity is increased by shortening the track pitch and data bit length and increasing the storage density. The medium of the invention can be made by current CD manufacturing facilities, and can be read through general DVD devices.

Abstract: A manufacturing method of a multi-layer optical information record carrier, which has a plurality of layers of reflecting surfaces with pits for recording information. According to the method, a reflective layer is first coated on a stamper with a pit pattern. A radiation-setting adhesive polymer resin is then applied on a substrate with another pit pattern and coated with a partial reflective layer. The substrate and the stamper are combined together and the resin is cured by ultraviolet light. After peeling off the stamper, two reflective layers are formed on the substrate. Finally, two of the substrates are adhered together using polymer resin and one obtains a multi-layer optical information record carrier with dual information layers on both sides.

Abstract: A cyanine dye (I) for using in high density optical disc recording medium, having the following structure: in which R1 represents R2 represents and alkyl with C1-C18 or X− represents an acid anion. This cyanine dye is suitable for use as a &lgr;=500 nm−650 nm visible light-absorbing organic dye useful as a high density optical disc recording medium.

Abstract: A production method of multi-layer information record carriers that involves forming a signal duplication layer on a substrate that contains signals, then replacing a metallic stamping plate with the substrate that comprises the signal duplication layer for manufacturing a signal layer of high molecular materials. After the signal layer has been subjected to curing by exposure to ultra violet light, the signal layer is separated from the signal duplication layer because of the difference between the adhesive forces of the different materials. Multi-layer information record carriers can be manufactured by repeating the manufacturing process. Since the manufacturing process of the invention is simple and speedy, it facilitates the creation of automated facilities for mass production.

Abstract: This invention is to provide a kind of cyanine-TCNQ complex dyes mixture (II, III, and IV) used as the data storage media having the structural formula (I): 1

Abstract: A rewritable DVD-RAM disc. By changing the location or dimension of the lead-out area of the DVD-RAM disc, the data area of the disc can be enlarged. The enlarged area of the disc can be flexibly applied to the user area, the main spare area, or the backup spare area.

Abstract: A bifocal optical pickup head is disclosed for use in a optical pickup apparatus having a single objective lens, for generating two different focuses (bifocus) to access a compact disc (CD) and a digital versatile disc (DVD), which the thickness is different. When a beam passes through an optical element disclosed in the present invention, numerical aperture is controlled and spherical aberration is reduced by the optical element due to variations in optical path and radius. Therefore, after beams having different numerical apertures are focused by an objective lens, various focuses can be obtained.

Abstract: The present invention pertains to a structure of pick-up head and its method for accessing signals, which operates in coordination with a disk made by ferroelectric material. An electric field is generated around the ends of two conductive wires by exerting a voltage on the wires. When the ends of the two wires are being close to the disk, the electric field polarizes the data-storing surface, which is formed by the ferroelectric material, so as to reach the function of writing. And as reading is needed, the two wires are also utilized of being induced by the electric lines of polarized area on the ferroelectric material to solve the data signals stored on the disk. Because the structure of pick-up head is simple and it is able to generate a smaller effective electric field, it is advantaged for the trend of miniaturization of pick-up head and capable of increasing the density of data on the disk.

Abstract: The present invention discloses a multiple-beam holographic optical pick-up head, which has the advantages of the multiple-beam optical pick-up head and the holographic optical pick-up head and can increase the light usage efficiency. This invention uses the property that a polarized diffractive optical element can generate different optical effects for laser beam with different polarizations and places a polarized multiple-beam grating and polarized hologram on the optical path for splitting the incident light toward the disc into multiple reading beams by the multiple-beam grating. The returning laser beams reflected from the disc are diffracted and diverted by the hologram to reach a photodetector. Both the incident and reflective beams are diffracted once only; thus the light usage efficiency can be increased.

Abstract: A high-density recordable optical recording disk with a cyanine dye mixture as a recording layer. The cyanine dye mixture at least comprises cyanine dye I and cyanine dye II.