Abstract:
Provided are an output filter and a power conversion apparatus having such an output filter. The output filter is configured by a neutral point detector with a reduced size and having no common mode inductance occurring by making inductances in coils of respective phases equal.
Abstract:
An oil ring Ro for an internal combustion engine according to the present invention includes at least one selected from the group consisting of hard carbon, CrN and TiN that covers an outer periphery 1 of the oil ring. A radius of curvature R at an outermost portion T of the oil ring in a sliding direction is 0.3 mm or more.
Abstract:
A differential amplifier has a first input terminal to which a voltage of a noise signal of the solid-state imaging device is supplied and a second input terminal to which a voltage of a temporary data signal having the noise signal of the solid-state imaging device superposed thereon is supplied. The differential amplifier inverts an output signal when a magnitude relationship in voltage between the first and second input terminals becomes reverse. A measurement circuit measures a variation amount of a voltage of the second input terminal from when the voltage of the second input terminal begins to vary in a direction to reverse the magnitude relationship to when the output signal of the differential amplifier is inverted, and outputs a measurement result as a digital value indicating a voltage of a real data signal obtained by removing the noise signal from the temporary data signal.
Abstract:
A solid-state image pickup device and image pickup method eliminate a dark-current component by adjusting the black level appropriately even if the dark-current component varies among horizontal lines. A pixel array includes light-receiving pixel elements and light-blocking pixel elements disposed such that horizontal lines include the light-blocking pixel elements individually. A readout circuit block reads pixel signals of each of the horizontal lines from the pixel array, inputs the pixel signals to ADC circuits (column ADC circuit block), and outputs the pixel signals of the light-blocking pixel elements. A ramp signal generation circuit obtains the pixel signals of the light-blocking pixel elements output from the readout circuit block, generates a ramp signal by using a reference level of AD conversion adjusted for each of the horizontal lines in accordance with the obtained pixel signals of the light-blocking pixel elements, and inputs the ramp signal to the ADC circuits.
Abstract:
A solid-state image sensor where dark current components fluctuating due to temperature changes are removed from pixel signals without reducing resolution during AD conversion. The sensor has a DA converter for generating a reference signal that increases at a constant slope from a predetermined initial signal level, a comparator for comparing the reference signal with a pixel signal, a counter for performing a counting operation in synchronization with increase in the reference signal, a latch circuit for holding as a quantized value of the pixel signal a discrete value at the time when the reference signal and the pixel signal coincide with each other, an average calculator for calculating an average of the quantized values of pixel signals read out from plural light-shielded pixels, and a reference signal adjuster for setting based on the average the initial signal level of the reference signal compared with the pixel signal read out from a light-receiving pixel.
Abstract:
The challenge of the present invention is to suppress a variation in brightness of an image and make a reference value of a black level converge at an appropriate value in a short time. Acondition judgment circuit judges whether or not a frame of an amount of change in gains of a variable gain amplifier being equal to or greater than a threshold continues for a predefined frames or more. If a frame of an amount of change in the gains being equal to or greater than the threshold continues for the predefined frames, a black level value of the current frame is set for new black level reference. If not continues for the predetermined number, the previous black level reference value is retained in lieu of correcting the black level.
Abstract:
In order to reduce crosstalk caused between control signal wires in a semiconductor apparatus without increasing the size of the semiconductor apparatus, a noise guard circuit is provided at the opposite end of the control signal wire to the driver circuit. The noise guard circuit controls in such a way as to increase the impedance between the relevant control signal wire and a fixed potential when the logic of the relevant control signal wire is positive logic for driving the element, and as to decrease the impedance between the relevant control signal wire and a fixed potential when the logic of the relevant control signal wire is negative logic for driving the element.
Abstract:
A differential comparator which outputs positive and/or negative logic signals to an output terminal according to the coincidence/non-coincidence of first and second input signal levels inputted to first and second input terminals, respectively, comprises an offset cancel function composed of an offset capacitor device provided on the differential comparator side of the first and second terminals, a first switch for short-circuiting the first and second input terminals in such a way as to form a closed loop including the offset capacitor device, and a second switch for short-circuiting both the connection point between the offset capacitor device and the differential comparator, and the output terminal.
Abstract:
A vehicle body structure comprises: a side roof rail, a rear roof rail, and a rear pillar, which are disposed in the rear portion of an vehicle body, and which intersect each other at an intersecting portion; a rear door provided for optionally opening and closing a rear port of the vehicle body; an automatic opening and closing unit disposed inside the vehicle body and in the vicinity of the intersecting portion; an aperture provided in the intersecting portion; and an arm provided through the aperture for connecting the automatic opening and closing unit to the rear door. The automatic opening and closing unit is fixed to at least the side roof rail, the rear roof rail, and the rear pillar so as to pass above the aperture.
Abstract:
A memory cell of the association memory including a register, a transmission circuit, and a match circuit is provided. A register stores storage data when its own memory cell is not in the don't care state, and stores the don't care data in the adjacent memory cell when in the don't care state. A transmission circuit transmits the don't care data indicating that the other adjacent memory cell is in the don't care state to the other adjacent memory cell when both of the don't care data transmitted from the one adjacent memory cell and the don't care data stored its own memory cell indicate the don't care state. A match circuit outputs match data indicating the agreement when the storage data stored in the register and the search data supplied from the outside agree with each other.