Abstract: A fuel injection timing control device includes a lift sensor for detecting a lift amount of a needle valve of a fuel injection nozzle, rectangular wave conversion means for converting an output signal of the lift sensor to a rectangular wave with a predetermined threshold level, and ignition point calculating means for calculating a timing for actual fuel ignition on the basis of the converted rectangular wave in accordance with a driving condition of the internal combustion engine, wherein the fuel injection control is performed on the basis of the calculated ignition timing.

Abstract: A semiconductor memory device is provided which includes a substrate arrangement which is suitable for forming a large number of types of DRAMs having different package specifications, different bit structure and different operating modes. In conjunction with this, the bonding pads are arranged at optimum locations for accommodating the different package types. Various layout arrangements are also provided to minimize space and to improve access time. Additional features are provided, including improved output buffer circuitry, protection circuitry and testing methods to facilitate operation of the semiconductor memory device.

Abstract: A sample-and-hold circuit, capable of charging and discharging its holding capacitor quickly regardless of a voltage of an analog input signal and an output impedance of an analog driving source, includes a pre-sampling capacitor and at least one CMOS inverter. Before the holding capacitor holds the sampled signal, the pre-sampling capacitor stores the signal level of the analog input signal, and then the CMOS inverter charges and discharges the one side of the holding capacitor according to the stored voltage in the pre-sampling capacitor. Since the one side of the holding capacitor is charged and discharged by the CMOS inverter thus controlled, the sample-and-hold circuit can operate with high speed and handle a wide range of the analog input signal.

Abstract: To achieve higher packaging density and one wafer level for a full-sized wafer memory, or wafer-scale integration memory system, the wafers are vertically stacked with each other at a predetermined interval. A packaging technique is improved in such a way that a memory system layout can be precisely realized and a precise through hole can be formed. Moreover, other chips are fixed on the wafer so as to achieve furthermore the high packaging density.

Abstract: A method and apparatus for grinding a cylindrical surface of a workpiece by a traverse movement of a grinding wheel having a relatively narrow grinding surface. To improve the cylindricity of cylindrical surface, the traverse grinding is divided into a rough traverse grinding and a finish traverse grinding. In the rough traverse grinding, a traverse girding is carried out with a large depth of cut which would causes a deterioration of the cylindricity at one end of the cylindrical surface. In the finish traverse grinding, a traverse girding is carried out with a small depth of cut to improve the cylindricity. In another embodiment, one of grinding conditions such as the traverse speed of the grinding wheel, the rotational speed of the workpiece and the peripheral speed of the grinding wheel is changed when the grinding wheel approaches an end of the cylindrical surface at which the traverse grinding ends so as to make the grinding force constant, thereby improving the cylindricity of the cylindrical surface.

Abstract: A semiconductor integrated circuit comprising first n-channel MISFETs constituting the memory cells of a storage system, second n-channel MISFETs constituting the peripheral circuits of the storage system, and third n-channel MISFETs constituting the output circuit among the peripheral circuits. The respective threshold voltages of the first n-channel MISFETs, the second n-channel MISFETs and the third n-channel MISFETs are decreased in that order when the respective gate lengths of those MISFETs are substantially the same.

Abstract: A machine for grinding a cylindrical surface and the end surface of a shoulder portion, both formed on a workpiece, using an angular grinding wheel. The end surface is perpendicular to the cylindrical surface. The grinding wheel has a first outer surface parallel to the axis of the workpiece and a second outer surface perpendicular to the first outer surface. The first outer surface has a cylinder-grinding parallel surface and a cylinder-grinding tilted surface. The parallel surface has a generatrix parallel to the generatrix of the cylindrical surface to be ground. The tilted surface is continuous with the parallel surface and has a generatrix tilted away from the generatrix of the cylindrical surface. The second outer surface has a shoulder-grinding parallel surface and a shoulder-grinding tilted surface continuous with this parallel surface. The shoulder-grinding parallel surface has a generatrix parallel to the end surface of the shoulder portion.

Abstract: A semiconductor memory device is provided which includes a substrate arrangement which is suitable for forming a large number of types of DRAMs having different package specifications, different bit structure and different operating modes. In conjunction with this, the bonding pads are arranged at optimum locations for accommodating the different package types. Various layout arrangements are also provided to minimize space and to improve access time. Additional features are provided, including improved output buffer circuitry, protection circuitry and testing methods to facilitate operation of the semiconductor memory device.

Abstract: A semiconductor integrated circuit memory structure is provided which uses macro-cellulated circuit blocks that can permit a very large storage capability (for example, on the order of 64 Mbits in a DRAM) on a single chip. To achieve, this, a plurality of macro-cellulated memory blocks can be provided, with each of the memory blocks including a memory array as well as additional circuitry such as address selection circuits and input/output circuits. Other peripheral circuits are provided on the chip which are common to the plurality of macro-cell memory blocks. The macro-cell memory blocks themselves can be formed in an array so that their combined storage capacity will form the large overall storage capacity of the chip. The combination of the macro-cell memory blocks and the common peripheral circuitry for controlling the memory blocks permits a faster and more efficient refreshing operation for a DRAM. This is enhanced by a LOC (Lead On Chip) arrangement used in conjunction with the memory blocks.

Abstract: To achieve higher packaging density and one wafer level for a full-sized wafer memory, or wafer-scale integration memory system, the wafers are vertically stacked with each other at a predetermined interval. A packaging technique is improved in such a way that a memory system layout can be precisely realized and a precise through hole can be formed. Moreover, other chips are fixed on the wafer so as to achieve furthermore the high packaging density.

Abstract: There is disclosed an improved cam for a fuel injection pump. The cam has a mountain-like cam projection at its surface disposed in contact with a roller. The cam projection has a lift region extending from a leading end thereof to a peak thereof. At the lift region, the cam is lifted in response to the rotation of the cam, so that a plunger is moved to pressurize fuel in a pump chamber. The lift region has first, second and third angle portions arranged in this order from the leading end of the cam projection toward the peak of the cam projection. The first angle portion serves to increase a lift speed of the cam, and terminates in a position where the lift speed becomes the maximum. The second angle portion serves to lower the lift speed. The deceleration is greater at an initial section of the second angle portion than at a final portion of the second angle portion.

Abstract: A thermal printer includes a platen roller on which a recording sheet is wound in such a manner that the recording sheet is laid over a part of the cylindrical wall of the platen roller. A thermal head is pushed against the platen roller to heat heating points selected for transferring ink from an ink sheet onto the recording sheet. A sheet pulling means pulls the recording sheet in a predetermined direction. A pinch roller on the sheet supplying side pushes the recording sheet against the platen roller with a predetermined force of depression so that the recording sheet is wound on the platen roller. A pinch roller rotating means is provided at at least one end of the pinch roller for rotating the pinch roller at a peripheral speed lower than that of the platen roller.

Abstract: An apparatus for measuring groove positions of a workpiece includes a sensor for detecting grooves formed on the workpiece and a position sensor for detecting angular position of the workpiece with respect to a predetermined standard position, a measuring cycle memory means for storing several predetermined measuring cycles, a data input means for imputting and storing groove data indicating groove shape, a measuring control means for selecting a specific measurement cycle from the measurement cycle memory means based on the groove data to execute selected measurement cycle, a calculation processing means for executing calculation processing for determining the center positions of grooves, and a data output means for outputting and displaying the results of the calculations in order to inform an operator of the center positions of the grooves.

Abstract: A fuel injection timing control apparatus for a distributor type fuel injection pump which enables the advantages of a servo valve arrangement provided in a timing piston to be utilized with the servo valve being disposed on the timing piston high-pressure chamber side. The fuel injection apparatus can be applied to engines with parts on the timer low-pressure chamber side without this causing interference, because the servo valve and any control mechanism are provided on the high-pressure chamber side.

Abstract: A method for varying the flow rate of fuel in a distributor-type electronic control fuel-injection pump. A single solenoid valve is used to control the timing of initiating and terminating fuel delivery. A cam is operated under four different modes, a low idle or a low speed/low load zone, a middle load zone, a high load zone, and a governing or high idle zone in that order as the cam is rotated. At the governing or high idle zone, the solenoid valve is closed before the cam is lifted and is opened to control fuel delivery when it is terminated.

Abstract: In-core nuclear instrumentation for a fast breeder reactor includes a neutron flux measuring unit disposed in a control rod assembly, whereby it is possible to measure a change in in-core neutron flux reliably and highly accurately without requiring a major modification in core design.

Abstract: An autonomous, decentralized fast breeder reactor includes a single reactor main vessel which houses a plurality of small-size reactor subsystems each having a small-scale fast breeder reactor core, and a plurality steam generator subsystems. These subsystems function in an autonomous manner and are caused to undergo a heat transfer with one another by a coolant circulating naturally through the interior of the main vessel, thereby constructing a cooperatively operating system. Steam generated by the steam generators is introduced to a turbine system and utilized in generating electricity. The condensate from the turbines is cooled by a heat accumulating pool, and the heat is utilized in a separate system. The entire system is installed underground and use is made of the difference in elevation. Use also is made of solid bedrock to construct a housing facility for the reactor.

Abstract: In a distribution-type fuel injection pump, a fuel supply passageway, through which a feed pump and a fuel pressurizing chamber communicate with each other, is isolated from a cam chamber and bypasses the same. In order to simplify the construction, the fuel supply passageway is formed in a peripheral wall portion of a housing. On the other hand, a cam mechanism comprises a spring assembly including at least one spring, first and second annular spring seats and an engaging member. The first spring seat has an annular base section and an extension extending from a peripheral edge of the base section toward the second spring seat. The engaging member is fixedly mounted to a forward end of the extension. Prior to incorporation the spring assembly into a hollow body of the housing, the spring assembly is in a state in which the peripheral edge of the second spring seat is engaged with the engaging member under elastic force of the spring.