Abstract:
A disc brake for railway vehicles includes a brake disc fixed to a wheel or an axle of a railway vehicle and a brake lining configured to be pressed against a frictional surface of the brake disc by a brake caliper. The brake lining includes a plurality of friction members arranged to be spaced from each other, each of the friction members having a surface that faces the frictional surface of the brake disc, a metallic backing secured to back surfaces of the friction members, and a base plate supporting the friction members on the back surface side via spring members. The base plate is mounted to a brake caliper; wherein the friction members are provided in pairs with each pair being formed by two adjacent ones of the friction members, and the metallic backing is a one-piece member provided for each pair of the friction members.
Abstract:
A semiconductor memory device includes a transfer circuit and a control circuit. The transfer circuit which includes a p-type MOS transistor with a source to which is applied a first voltage and an n-type MOS transistor to whose gate the drain of the p-type MOS transistor is connected and the first voltage is transferred, to whose source a second voltage is applied, and whose drain is connected to a load. The control circuit which turns the p-type MOS transistor on and off and which turns the p-type MOS transistor on to make the p-type MOS transistor transfer the second voltage to the load and, during the transfer, turns the p-type MOS transistor off to make the gate of the n-type MOS transistor float at the first voltage.
Abstract:
A bit register is restored to the initial state thereof irrespective of the state of the bit register even when a convolution encoder includes a circular section.The convolution encoder comprises an input data acquiring section (F11) for acquiring input data; an encoding object data generating section (F10) for generating encoding object data on the basis of the input data; a storage section (M10) for storing data corresponding to the encoding object data; a mod2 adder (S10) for performing convolution processing of the encoding object data on the basis of the data stored in the storage section (M10); and a switching section (F12) for switching at a prescribed timing the encoding object data generated by the encoding object data generating section (F10) from data based on the input data to data based on the data stored in the storage section (M10); wherein the data stored in the storage section (M10) are data obtained as a result of the convolution processing.
Abstract:
According to one embodiment, a semiconductor device includes a first voltage generator, a second voltage generator, a first MOS transistor, and a controller. The first voltage generator outputs a first voltage to a first node. The second voltage generator outputs a second voltage to a second node. The first MOS transistor is capable of short-circuiting the first node and second node. The controller performs a control operation to short-circuit the first node and second node by turning on the first MOS transistor. The controller controls a period in which the first MOS transistor is kept in an on state based on time.
Abstract:
A polymer electrolyte membrane comprising as a main ingredient a block copolymer (P) which comprises, as its constituents, a vinyl alcoholic polymer block (A) and a polymer block (B) having ion-conducting groups, which block copolymer(P) is cross-linking treated, and a membrane-electrode assembly and a fuel cell using the polymer electrolyte membrane, respectively. Preferred as polymer block (B) is one having a styrene or vinylnaphthalene skeleton or a 2-(meth)acrylamido-2-methylpropane skeleton. The ion-conducting group includes a sulfonic acid group, a phosphonic acid group or the like.
Abstract:
Disclosed is a suspension subframe structure of a vehicle, which is capable of improving the overall rigidity of a suspension subframe to effectively receive input loads from suspension arms, while reducing the overall weight of the suspension subframe. The suspension subframe structure for supporting a plurality of suspension arms 14, 16 of a multi-link suspension system comprises first and second lateral members 20, 22 each extending in a lateral direction of the vehicle body, a pair of longitudinal members each extending in a longitudinal direction of the vehicle body, and right and left inclined members 28 each having one end which is located on the side of a respective one of right and left ends of the first lateral member and provided with an upper-arm support portion and a lower-arm support portion, wherein each of the right and left inclined members extends obliquely relative to the lateral direction in top plan view to connect the upper-arm support portion and the lower-arm support portion with a laterally intermediate portion of the second lateral member.
Abstract:
A semiconductor memory device has a semiconductor memory which includes the first central management block storing an address translation table, a free table for registering only an effective block address, the first bad block table, and a reserved table, and a controller configured to control a substitution block address acquired from the reserved table to substitute a bad block address when the bad block address is generated in the address translation table.
Abstract:
A trench isolation region is formed in a surface region of a semiconductor substrate to form a MOS type element region. A mask layer having an opening portion is formed on the semiconductor layer, the opening portion continuously ranging on the entire surface of the MOS type element region and on part of the trench isolation region provided around the MOS type element region. A first impurity ion is implanted into the entire surface via the mask layer to form a peak of the impurity profile is situated in the semiconductor layer under the bottom surface of the shallow trench isolation region. A second impurity ion is implanted into the entire surface via the mask layer to form a peak of the impurity profile is situated on the midway of the depth direction of the trench isolation region. Then, the first and second impurity ions are activated.
Abstract:
A semiconductor integrated circuit is disclosed which includes a clock synchronous memory, an internal clock generating circuit, a clock selecting circuit, a data output converting circuit, and a data output selecting circuit. The clock synchronous memory is disposed to receive a control signal, an address signal, and a data input and provide an internal data output. The internal clock generating circuit is disposed to generate an internal clock signal having a frequency higher than that of an external clock signal. The clock selecting circuit is disposed to select between the external clock signal and the internal clock signal and send the selected clock signal to the clock synchronous memory. The data output converting circuit is disposed to convert the internal data output into an external data output in synchronization with a clock signal having a frequency lower than that of the internal clock signal. The data output selecting circuit is disposed to select between the internal data output and the external data output and provide the selected data output.
Abstract:
This invention provides (1) a granular material of a polyimide precursor, which has excellent solubility in solvents and excellent moldability and from which a polyimide molding having excellent mechanical properties can be produced, (2) a mixture of a granular material of a polyimide precursor with a solvent, in which the polyimide precursor shows excellent storage stability and (3) a process for the production of a granular material of a polyimide precursor, in which a solvent can be easily removed. Particularly provided are a polyimide precursor granular material having an intrinsic viscosity of 0.7 or higher and a polyimide precursor mixture which consists of a polyimide precursor granular polyimide having an intrinsic viscosity of 0.7 or higher and a solvent that does not exhibit a strong-mutual interaction with the polyimide precursor, as well as a process for the production of the polyimide precursor granular material. The granular material of a polyimide precursor can be obtained by allowing a tetracarboxylic dianhydride to undergo polymerization reaction with a diamine in a solvent that does not exhibit a strong mutual interaction with the polyimide precursor.