摘要:
Embodiments of the invention prevent a magnetic head from coming into contact with a protrusion on a magnetic disk. In one embodiment, a head gimbal assembly includes a piezoelectric actuator for changing the flying height of a head/slider assembly. The address of a protrusion on a magnetic disk is preregistered in a nonvolatile memory. When a seek operation or following operation is to be performed, the head/slider assembly flies at a reference flying height. Before the protrusion passes below the head/slider assembly, an operating voltage is applied to the piezoelectric actuator to increase the flying height. After the protrusion passes below the head/slider assembly, the head/slider assembly flies at the reference flying height with operating voltage application stopped.
摘要:
An air-packing device has an improved shock absorbing capability to protect a product in a container box. The air-packing device is comprised of first and second thermoplastic films where predetermined portions are bonded thereby creating a plurality of air containers, a plurality of heat-seal lands each sealing the first and second thermoplastic films in a small area of the air container thereby creating a plurality of series connected air cells for each air container, a plurality of check valves for corresponding air containers for allowing the compressed air to flow in a forward direction. The plurality of heat-seal lands at predetermined sides of the air-packing device create triangled areas of the air cells, and the air-packing device is folded at the heat-seal lands, thereby creating an inner space for packing a product therein.
摘要:
A method of making a light emitting element, the light emitting element with a semiconductor layer represented by: AlxInyGa1-x-yN (0≦X≦1, 0≦Y≦1, 0≦X+Y≦1), has the step of wet-etching a surface of the semiconductor layer by using an etching solution to have a roughened surface on the semiconductor layer. The wet-etching is conducted without irradiating the surface of the semiconductor layer with a light with a wavelength region corresponding to energy higher than bandgap energy of the semiconductor layer.
摘要翻译:一种制造发光元件的方法,所述发光元件具有半导体层,所述半导体层由以下组成:Al x Ga 1-x N (0 <= X <= 1,0,0 <= Y <= 1,0 <= X + Y <= 1)具有通过使用蚀刻溶液湿法蚀刻半导体层的表面以使其粗糙化的步骤 半导体层上的表面。 在不用半导体层的能隙高于能量的波长区域的光照射半导体层的表面的情况下进行湿式蚀刻。
摘要:
An air-packing device has an improved shock absorbing capability to protect a product in a container box. The air-packing device is comprised of first and second thermoplastic films where predetermined portions are bonded thereby creating a plurality of air containers, a plurality of heat-seal lands each sealing the first and second thermoplastic films in a small area of the air container thereby creating a plurality of series connected air cells for each air container, a plurality of check valves for corresponding air containers for allowing the compressed air to flow in a forward direction. The plurality of heat-seal lands at predetermined sides of the air-packing device create triangled areas of the air cells, and the air-packing device is folded at the heat-seal lands, thereby creating an inner space for packing a product therein.
摘要:
Embodiments of the invention provide an error recovery scheme that allows a data read/write error in a data storage device to be processed within a short time, and a data storage device that attempts error recovery using the error recovery scheme. In one embodiment, a data storage device conducts an error recovery process for a data access error in accordance with an error recovery procedure having multiple error recovery steps; the data storage device including a head that accesses a data region of a user data storage medium, and a controller that controls the error recovery process by using not only address information of the sector where the access error to the data region has occurred, but also an error recovery log which has address information of the data region and past error recovery information associated with the latter address information.
摘要:
A light-emitting semiconductor device provides an active layer which comprises thirteen (13) layers that includes six (6) pairs of quantum barrier layers made of Al0.95In0.05N and quantum well layers made of Al0.70In0.30N, which are laminated together alternately. The semiconductor device may also comprise a quantum well layer having a high composition ratio of indium (In). Forming the quantum barrier layer and the quantum well layer to have a high composition ratio of indium (In) increases the lattice constant of the active layer of the semiconductor device.
摘要翻译:一种发光半导体器件提供了一种有源层,其包括十三(13)层,其包括六(6)对量子阻挡层,所述量子势垒层由Al 0.95 N和N N N制成, 交替地层叠在一起的由Al 0.70 N 3 O 3 N制成的量子阱层。 半导体器件还可以包括具有高的铟(In)组成比的量子阱层。 形成量子势垒层和量子阱层以具有高的铟(In)组成比增加了半导体器件的有源层的晶格常数。
摘要:
An optical box for positioning and fixing respective optical components is provided and functions as a housing thereof. A support stand for positioning and mounting the respective optical components, respectively, is formed separately from the optical box, and is loaded in the optical box.
摘要:
A gate portion constituting a gate of a resin molding die is made of a hard alloy having a hardness greater than the predetermined hardness in the iron-based hard alloy used to from a cavity block and a center block. Opposing surfaces of the cavity block halves include a silicone rubber layer at least at the portions thereof which contact portions of the lead frame in a semiconductor encapsulation molding apparatus.
摘要:
An automotive data device, such as an audio player, for playing recording media of a different size includes a housing member housing a first player unit and a second player unit in a stacked arrangement. Each of the player units have insertion slots. A movable operating panel for controlling the respective first player unit and the second player unit extends across the respective insertion slots. A control unit can drive the movable operating panel in a first mode of operation to expose only the first insertion slot, while maintaining the operability of user controls on the operating panel. The control unit provides a second mode of operation to expose both of the insertion slots, while retracting at least a portion of the operating panel into the housing member below the lower insertion slot.
摘要:
A rotary storage device includes a plurality of disk units, an upper-level interface circuit, a cache controller, a cache memory, and a control processor. In each disk unit, the storage area of each disk is subdivided into an ordinary user data area and a secondary cache data storage area including a group of consecutive cylinders. Data overflowed from the cache memory is sequentially written in the secondary cache data storage area so as to be later transferred therefrom to areas of the user data area according to addresses inherent thereto when traffic of upper-level input/output processing is relatively low. In the case of when data is sought to be accessed in the cache memory during a data read operation, access operations are performed first to the secondary cache data storage area and then to the user data area.