摘要:
To provide a device for downloading a digital content file, an information processor stores, in an external storage device, a digital content file obtained from a server through a network through packet communication, where the information processor includes a download control section for keeping a recording area having a size which is equal to the data size of the digital content file in the external storage device and storing the packets in order from the earliest to the latest obtained, in this recording area; and a resume data generation section for generating a resume data indicating the progress of obtaining the digital content file, and the download control section stores the resume data in the subject recording area and removes the resume data from the recording area when the last packet is obtained.
摘要:
A small-size magnetic sensor comprises three axial sensors each configured using plural giant magnetoresistive elements, wherein an X-axis sensor and a Y-axis sensor are arranged on the planar surface of an embedded layer of a substrate, and giant magnetoresistive elements forming a Z-axis sensor are formed on slopes of projections, which are formed by etching the embedded layer. It is possible to form an elongated projection on a substrate by way of the high-density plasma CVD method or by way of plasma etching and microwave etching, so that giant magnetoresistive elements are formed on the slopes of the elongated projection.
摘要:
A method for evaluating crystal defects of a silicon wafer comprising: etching a surface of the silicon wafer by immersing the wafer in an etching solution; and observing etch pits formed on the etched surface of the wafer, wherein the silicon wafer of which crystal defects are evaluated has low electrical resistivity of 1 Ω·cm or less, and the etching solution is a mixture of hydrofluoric acid, nitric acid, acetic acid and water further including iodine or iodide, in which a volume ratio of nitric acid in the etching solution is the largest among volume ratios of hydrofluoric acid, nitric acid, acetic acid and water, and the etching solution is adjusted to have an etching rate of 100 nm/min or less for the silicon wafer. Thereby, there is provided a method for evaluating crystal defects of a silicon wafer with low electrical resistivity by using a chromium-free etching solution without toxic chromium with high capability of detecting defects.
摘要:
To provide a device for downloading a digital content file. An information processor stores, in an external storage device, a digital content file obtained from a server through a network through packet communication. The information processor includes a download control section for keeping a recording area having a size which is equal to the data size of the digital content file in the external storage device and storing the packets in order from the earliest to the latest obtained, in this recording area; and a resume data generation section for generating a resume data indicating the progress of obtaining the digital content file. The download control section stores the resume data in the subject recording area and removes the resume data from the recording area when the last packet is obtained.
摘要:
A magnetic sensor 10 includes GMR elements 11-18, and heating coils 21-24 serving as heat generating elements. The elements 11-14 and 15-18 are bridge-interconnected to constitute X-axis and Y-axis sensors, respectively. The heating coils 21, 22, 23, and 24 are disposed adjacent to the elements 11 and 12, the elements 13 and 14, the elements 15 and 16, and the elements 17 and 18, respectively. The heating coils 21-24, when electrically energized, heat mainly the adjacent elements. Therefore, the elements can be heated and cooled in a short period of time in which constant geomagnetism can be ensured. Data for compensation of temperature-dependent characteristic (ratio of change in sensor output value to variation in element temperature) is obtained on the basis of the temperatures of the elements before and after the heating, and the magnetic sensor outputs before and after the heating. Subsequently, the temperature characteristics of the elements are compensated on the basis of the data.
摘要:
A pressing surface portion of a presser member for selectively holding a semiconductor device is supported to be movable upward and downward in accordance with the up/down motion of a cover member to be close to or away from a alignment plate, as well as to be rotatable between a position directly above the alignment plate and a predetermined waiting position.
摘要:
An organic electroluminescence device having a longer drive life is provided.An organic electroluminescence device is an organic electroluminescence device comprising, between a pair of electrodes composed of a cathode and an anode, a light emitting layer, a hole transport layer provided on the anode side of the light emitting layer, and an electron transport layer provided on the cathode side of the light emitting layer.The organic electroluminescence device is characterized in that the light emitting layer comprises a luminescent dye, and a host material having a nitrogen-containing aromatic heterocyclic ring.The luminescence resulting from the hole transport layer adjacent to the light emitting layer is less than one-hundredth of the luminescence resulting from the luminescent dye.
摘要:
In a navigation device, the position PGPS, the running speed V, and the running direction φ are detected based on the Global Positioning System (GPS), while the bearing θ is detected based on geomagnetism. The bearing θ is corrected using the difference δ=θ−φ so as to produce the corrected bearing θc. The present position PMAG is calculated based on the corrected bearing θc as well as the position PGPS and the running speed V which are previously detected. Thus, it is possible to precisely detect the present position PMAG without errors due to deviations between the running direction φ and the bearing θ.
摘要:
A magnet rotor in which rotation prevention and positional displacement (rattling, and misalignment of axes) between a magnet and a rotor body can be restricted, a movable magnet type-instrument with the magnet rotor, and a stepping motor with the magnet rotor. In the magnet rotor, projections (11) and recesses (12) arranged with predetermined intervals and formed in a substantially rectangular shape are provided on the inner wall of a hollow section of an annular magnet (10). Rising side wall sections (11A) defined by the projections (11) are radially directed with the position of the axis (G) of the magnet rotor (R) as the standard. In the rotor body (20), rotation prevention sections (21) for preventing relative rotation between the rotor body (20) and the annular magnet (10) are formed by placing a plastic material along the shapes of the projections (11) and the recesses (12).
摘要:
A magnetic sensor comprises magnetoresistive elements and permanent magnet films, which are combined together to form GMR elements formed on a quartz substrate having a square shape, wherein the permanent magnet films are paired and connected to both ends of the magnetoresistive elements, so that an X-axis magnetic sensor and a Y-axis magnetic sensor are realized by adequately arranging the GMR elements relative to the four sides of the quartz substrate. Herein, the magnetization direction of the pinned layer of the magnetoresistive element forms a prescribed angle of 45° relative to the longitudinal direction of the magnetoresistive element or relative to the magnetization direction of the permanent magnet film. Thus, it is possible to reliably suppress offset variations of bridge connections of the GMR elements even when an intense magnetic field is applied; and it is therefore possible to noticeably improve the resistant characteristics to an intense magnetic field.