Abstract:
In order to perform synchronization detection with high speed, high precision and high reliability and to measure communication quality (propagation characteristics) at high precision and high efficiency, a mobile station (202) includes synchronization detecting portion (221) for detecting synchronization chip timing of channel to be measured, a synchronization chip timing information portion accumulating information of detected synchronization chip timing, a correlation detecting portion (222) deriving a correlation value between spreading code of the channel to be measured and a received signal for performing communication with a base station and measurement of communication quality with taking the detected synchronization chip timing as a reception chip timing, a time series generating portion (223) for generating a time series data of received signal vector after correlation detection, and a communication quality calculating portion (224) for calculating communication quality from generated time series data.
Abstract:
In order to perform synchronization detection with high speed, high precision and high reliability and to measure communication quality (propagation characteristics) at high precision and high efficiency, a mobile station includes synchronization detecting portion for detecting synchronization chip timing of channel to be measured, a synchronization chip timing information portion accumulating information of detected synchronization chip timing, a correlation detecting portion deriving a correlation value between spreading code of the channel to be measured and a received signal for performing communication with a base station and measurement of communication quality with taking the detected synchronization chip timing as a reception chip timing, a time series generating portion for generating a time series data of received signal vector after correlation detection, and a communication quality calculating portion for calculating communication quality from generated time series data.
Abstract:
A tire/wheel assembly comprising a wheel having a rim, a pneumatic tire fitted to the rim and a run-flat support member. The pneumatic tire includes a cavity, and the run-flat support member is disposed in the cavity of the pneumatic tire. The run-flat support member includes an annular shell and elastic rings. The annular shell has a support surface located radially outward and two leg portions formed radially inward. The elastic rings support the leg portions on the rim. The leg portions of the annular shell are detachably attached to the elastic rings.
Abstract:
A tire/wheel assembly, wherein a run-flat support body comprising an annular shell having an outer peripheral side as a support surface and an inner peripheral side formed in fork-shaped open legs and elastic rings supporting the end parts of the fork-shaped open legs on a rim is inserted into the hollow part of a pneumatic tire, bent parts are formed at the end parts of the annular shell where the annular shell is connected to the elastic rings, the shape of the elastic ring in a cross section orthogonal to the circumferential direction of the elastic ring is formed into a barrel shape having bulged both side faces, the maximum thickness (A) of the elastic ring in a cross section swelling from a tangential line (L1) extending from the apex (P1) of a hump on the rim so as to abut on the axial inner end (P3) of the bent part is 3 to 6 mm, and the maximum thickness (B) thereof swelling from a tangential line (L2) extending from an intersection (P2) between a line segment (L3) parallel with a tire axis through the centroid of a bead core and the inner surface of the tire bead so as to abut on the axial outer end (P4) of the bent part is 1 to 5 mm.
Abstract:
Disclosed is a pneumatic tire adopting a bias ply structure in which plural carcass layers are disposed so that cords cross each other between the layers, and having an aspect ratio of 55% or less and an outer diameter of 300 mm or less, wherein a cord angle to a tire circumferential direction of said carcass layer is set to a range from 27 to 37° in the center line position, and a surface shape of a tread portion is formed to be straight to a tire width direction in the region of 60 to 75% of a tread width.
Abstract:
The present invention is provided with a switch circuit which can turn on/off electric power supply from a battery. Further, a CPU transfers and evacuates specific data stored in a DRAM when electric power supply from a main power supply is stopped and electric power supply from a battery is performed. Thereafter, the CPU turns off the switch circuit and stops electric power supply from the battery.
Abstract:
A bearing device is used as a bearing for a pivot of a head stack assembly to thereby make a hard disc drive thin. Widths of first and second inner races 12a and 13a are set to be smaller than the widths of first and second outer races 12b and 13b. Even if first and second bearings 12 and 13 (outer races 12b and 13b) are mounted on a shaft 9 in contact with each other, a space S is formed between the first and second inner races 12a and 13a. From this structure, in the case where a pre-pressure is applied to the second inner race 13a, it is possible to adjust the pre-pressure in a wide range. In the prior art, it has been necessary to provide an annular projection or a spacer for keeping a space for application of the pre-pressure. However, the present invention makes possible to dispense with the annular projection or the spacer. Corresponding to this, the width of the bearing device 10 is shortened. Finally, the thickness of the pivot portion of the swing arm is decreased to thereby make the hard disc drive thin.
Abstract:
Provided is a semiconductor device comprising a semiconductor chip which is directly covered with a resin material having a light shielding property as well as a film which is provided on the resin material for shielding the semiconductor device against light. The film may be formed by a seal having a surface which is covered with a metal and a rear surface which is colored black, a layer of a metal or ceramics which is deposited in a vapor phase, or a coating of an insulating material whose refractive index is different from that of the resin material. In another aspect of the present invention, provided is a semiconductor device which is directly covered with a resin material mixed with a light absorbing material. In still another aspect of the present invention, provided is a semiconductor device comprising a semiconductor chip, having a surface covered with black polyimide, which is further covered with a resin material having a light shielding property. In a further aspect of the present invention, provided is a package for covering a semiconductor device which is mounted on a wiring board. According to such improvement, a light shielding property is improved particularly in relation to a thin semiconductor device whose thickness is only about 1 mm, and the semiconductor device is prevented from a malfunction caused by light.
Abstract:
A semiconductor storage device formed on a single chip includes a ROM, a RAM and an input/output port. When a mode setting signal designates a normal mode, access is made to one of the ROM, RAM and input/output port in response to an address signal. The ROM is accessed when the mode setting signal designates a ROM write mode and the address signal designates an address assigned to the ROM. A dummy data is output from a data input/output terminal when the mode setting signal designates the ROM write mode, the address signal designates an address outside an address region assigned to the ROM, and a read signal is applied to the device.
Abstract:
A film conveying apparatus includes a portion for feeding a film, a portion for drawing the film and a slack detecting apparatus for detecting slack of the film therebetween. The slack detecting apparatus includes a light emitting portion and the light receiving portion, and when the light from the light emitting portion to the light receiving portion is intercepted by the film, it is determined that the film has slack. When the slack of the film is detected by the slack detecting apparatus, emission of light from the light emitting portion is stopped for a prescribed time period.