Abstract: A shift control system comprises a diameter-change calculation which calculates the difference between the diameters of the contact circles at present and after a shift to a target speed change ratio and a slip prevention thrust calculation which calculates a slip prevention thrust necessary for transmitting the power through a V belt without slip between the V belt and the drive and driven pulleys. A speed ratio maintaining thrust calculation which calculates a speed ratio maintaining thrust that is an addition to the slip prevention thrust for maintaining the current speed change ratio in constant condition and for transmitting the power without any slip of the belt and a additional thrust calculation which calculates a shifting additional thrust that is added for a contact-circle enlarging pulley to achieve a shift to the target speed change ratio.

Abstract: A semiconductor memory device which includes at least two memory cell arrays, a sense amplifier shared by the memory cell arrays and at least two transfer gates connected respectively between each of the memory cell arrays and the sense amplifier. The semiconductor memory device further includes a first voltage supplier supplying a first voltage to the transfer gates, and a second voltage supplier supplying a second voltage to the transfer gates, with second voltage being higher than the first voltage.

Abstract: A driving state monitoring apparatus for a vehicle, for monitoring the driving state of the driver of the vehicle is disclosed. A behavior parameter indicative of an amount of lateral movement of the vehicle and the speed of the vehicle is detected. A simple regression line is obtained according to changes in the behavior parameter and the simple regression line is set as a behavior reference. A lateral deviation behavior quantity of the vehicle is calculated according to the behavior parameter, the behavior reference, and the vehicle speed. It is determined according to the lateral deviation behavior quantity whether or not the driving state of the driver is proper. The shape of a road on which the vehicle is running is determined. When the road shape is determined to be substantially straight or curved with a substantially constant radius of curvature, and the driving state of the driver is not determined to be proper, it is determined that the driving state of the driver is abnormal.

Abstract: A resistor string digital-analog conversion circuit includes three resistor strings connected in series, a controller, and a switch group. The controller controls switchover of the switch group according to a signal of m high-order bits of an input digital signal. Thus an analog output corresponding to the m high-order bits is obtained. Another controller varies potentials of two variable voltage sources according to a signal of n low-order bits of the input digital signal, while always keeping a potential difference across the three resistor strings constant. Thus an analog output corresponding to the n low-order bits is obtained. This analog output is output to an output terminal.

Abstract: In order to improve the fuel consumption efficiency of the fuel cell vehicles, a control flow is provided, in which, first, it is determined whether the vehicle speed VST is lower than a predetermined speed ISTP (step S01), whether a motor output PMCMD including the driving motor and the motor for driving the air compressor is less than a predetermined motor output ISTPPM (step S04), whether the brake is in the ON state (step S05), and whether the terminal voltage Vst of the power storage unit is higher than predetermined values VISTPH and VISTPL (step S06). When all of the determinations are “YES”, a permission flag for executing the idle stop F_ISTP is set to “1”, and if any of them is “NO”, the permission flag F_ISTP is set to “0”.

Abstract: A cutting apparatus includes a first annular member having a center eccentric from an axis of a rotating shaft and fixed to the rotating shaft. The cutting apparatus further includes a bearing with its inner race fixed to the first annular member, a disk cutter fixed relative to an outer race of the bearing, and a balancer fixed to the rotating shaft in a state being eccentric in the direction opposite to the eccentric direction of the first annular member.

Abstract: The present invention allows for rendering, with a micropolygon renderer, motion blurred images of objects modeled and animated with the most commonly used class of implicit surfaces. The invention introduces the technique of automatic implicit differentiation to automatically compute the time derivatives of points on the combined surface from the time derivatives of the constituent surface elements while evaluating the combined field function that defines the composite surface.

Abstract: A solar generator system includes a solar cell for photo-electrically converting sunlight, a multi-focus lens for condensing and converging the sunlight to the solar cell, and a secondary light-condenser which is formed into an inversed truncated conical shape with a portion adjacent to the lens being of a larger diameter, and which is disposed on the solar cell with a light-receiving face being opposed to the lens so as to introduce converged rays from the lens to the solar cell. The secondary light-condenser has a light-receiving surface which is formed into a cornet shape and includes a circular planar portion, and a slant portion which is formed into a tapered shape with the diameter thereof being larger as it goes away from the lens and which has a smaller-diameter end connected to an outer periphery of the planar portion.

Abstract: A piston is reliably cooled from its backside by using an oil for lubricating portions around a crank pin of a crankshaft. An engine including a crankshaft is provided with lubricating oil bores to supply an oil from journals of the crankshaft to an outer peripheral surface of a crank pin. A larger end of the connecting rod is provided with a pair of opposed axial oil grooves in its outer peripheral surface, and with an annular oil passage connected to the axial groove in its side thrust face. A pair of cooling oil injection grooves each have one end connected to the annular oil passage and the other end directed to a piston while they are provided proximate to each other.

Abstract: An electrical device, in which can easily detect an operation status just before a stoppage of a power supply or an error occurrence when a system is returned, even if the power supply is cut off or the error occurs during executing program or erase operation, is provided. The electric device with a flash memory built-in including an auxiliary non-volatile memory for recording bus information for connecting the flash memory and a control section for controlling the flash memory. The auxiliary non-volatile memory is preferably to a memory, in which data write operation can be executed higher than the flash memory, for example, a ferroelectric RAM (FeRAM). The FeRAM, which is a memory using a polarization of ferroelectric, activates the same as that of a DRAM, and maintains recorded data, even if a power supply is cut off. Further, a time required to write data is higher than that of a non-volatile memory formed of a floating gate type of MOS transistor, which is used in the conventional flash memory.

Abstract: A parking aid system having a driver initially stop the subject vehicle alongside a target parking position so that a mark provided inside a door coincides with the central line of the target parking position when assisting the driver with left reverse parking. The subject vehicle is a predetermined distance away from an entrance of the target parking position, when the driver turns the operation switch ON. A display unit then displays the target parking position, the subject vehicle position, and an expected parking position. The expected parking position is set at a position that the subject vehicle reaches when reversing with the steering wheel turned fully to the left.

Abstract: A semiconductor device includes a word line that is reset to a negative voltage when the word line is unselected. The semiconductor device further includes a sequence circuit that clamps the word line to a first fixed voltage, until a fixed power-supply voltage that is supplied to a memory cell connected to the word line reaches a second fixed voltage, at a time of starting power supply. Thus, the semiconductor device can prevent a negative power-supply voltage used for resetting the word line from rising, and can reduce consumed energy.

Abstract: A semiconductor integrated circuit device has a command decoder for issuing a control command in accordance with a supplied control signal, a DRAM core, and a timing adjusting circuit for supplying the control command, set active for a predetermined period, as a DRAM control signal to the DRAM core. The timing adjusting circuit generates n different clocks that are respectively shifted in phase with respect to a supplied reference clock, and generates the DRAM control signal by setting the control command active in a prescribed operation cycle for only a period starting at a first predetermined clock pulse of a first clock of the n clocks and ending at a second predetermined clock pulse of a second clock of the n clocks. In this way, timing design with relatively high accuracy of adjustment can be done in a short period.

Abstract: A television system includes a television receiver (11) and a remote control (18, 72). If an RGB bias level adjusting mode is set by the remote control, the CPU (74) disables the ramp waveform generator (36) but enables a brightness component cutoff circuit (58a) and color component cutoff circuit (58b) that are included in an YC mixing circuit (58). In response, vertical deflection is suspended, and a video signal having a pedestal level is outputted onto a display (70). Accordingly, luminescence occurs on the display at a vertically center thereof. Meanwhile, the bias level is adjusted optimal by user's operation of a numeral key provided on the remote control while observing on the display.

Abstract: Memory cell blocks 10 to 17 are respectively provided with mask ROM cell rows and different values from one another are respectively stored in the mask ROM cell rows. A mask ROM cell row selecting circuit 5i makes transfer gates of mask ROM cells in a memory cell block 1i corresponding to a block selection signal BSi turned on when a test mode signal *TM and the block selection signal BSi are both active wherein i=1 to 7. A word line selection signal is made inactive when the test mode signal *TM is active. Tests on short between address signal lines and other defects are effected in a procedure wherein a test mode is activated, block selection signals are sequentially activated to read contents of mask ROM cell rows and the contents are compared with expected values.

Abstract: A fault determining apparatus for an exhaust passage switching valve which is capable of directly, rapidly and properly determining a fault in an exhaust passage switching valve, under conditions such as immediately after the start of an internal combustion engine, in which the switching valve should be essentially operated, without the need for setting a special fault determining mode. The fault determining apparatus determines a fault in the exhaust passage switching valve for switching an exhaust passage of exhaust gases discharged from an internal combustion engine between a main exhaust passage having a three-way catalyst and a bypass exhaust passage having filled in an intermediate portion thereof an adsorbent capable of adsorbing hydrocarbons and moisture in the exhaust gases in accordance with an activated state of the three-way catalyst.

Abstract: An A/D converter comprises: a differential amplifier row for amplifying differential voltages between an analog input voltage and reference voltages; a first sample/hold circuit row for sampling/holding the individual differential voltages amplified; a second sample/hold circuit having a pair of second and third sample/hold circuits connected in parallel to each output of the first sample/hold circuit row, thereby performing alternate sampling; a plurality of comparators for determining whether the individual differential voltages held by the first sample/hold circuit row are positive or negative; and an encoder for outputting digital code corresponding to the outputs of the comparators.

Abstract: A semiconductor device includes a fuse circuit which stores information represented by fuse connections, a power-on circuit which generates a power-on signal that changes a signal level thereof following power-on of the device, a timing circuit which starts timing a predetermined duration upon the signal level change of the power-on signal, and a control circuit which makes an initial setting by referring to the information of said fuse circuit in response to an event that said timing circuit finishes timing the predetermined duration.

Abstract: A semiconductor integrated circuit including a semiconductor device has a command decoder unit for decoding command signals synchronously with an external clock. An internal signal whose timing precedes the timing of the command decoder unit decoding the command signals is used to reset the command decoder unit. Preferably, a signal produced by a DLL is used as the internal signal. Consequently, a margin in timing of actuating the semiconductor device is expanded.