摘要:
A semiconductor integrated circuit has a function of providing an internal voltage having little dependency on a variation of external power supply voltage comprises a reference voltage generating circuit which outputs a first output corresponding to a reference voltage, a voltage converting circuit which outputs a second output, a level of which is in accordance with an outer power source voltage, a voltage-decrease/boosting selecting circuit which receives first and second outputs and outputs a third output resulting from comparing a level of the first output with a level of the second output, a level of the third output being changed when a level of the outer power source voltage exceeds a prescribed value. Also included are a voltage-decrease circuit which decreases the outer power source voltage upon receiving the third output and outputs an internal voltage when the third output has a first level, a boosting circuit which constantly boosts the outer power source voltage upon receiving the third output and outputs the internal voltage when the third output has a second level, an internal voltage limiting circuit which outputs a fourth output upon receiving the first output and the internal voltage to control a decreasing amount of the voltage-decrease circuit and a boosting amount of the boosting circuit, and an internal circuit for receiving the internal voltage.
摘要:
A DRAM provided with special function modes of a plurality of different types and capable of discriminating the modes and entering a selected one thereof without conflicting with a conventional standardized WCBR entry method. Such a DRAM comprises a counter circuit FF for counting the number of times a /WE signal is made active while a /RAS signal is active after the start of a /WCBR cycle and an entry circuit that discriminates the special function modes and enters the DRAM in a selected one thereof according to the obtained count.
摘要:
A memory test circuit in which test data is simultaneously written into plural memory cells of a semiconductor memory device and then subsequently read from the plural memory cells to assure reliable operation of the memory device. A logical sum and a logical product are formed of the test data read out from the plural memory cells. The logical product and the logical sum are subjected to an exclusive-or operation, the result of which is indicative of whether or not the test data was correctly written into the memory cells.
摘要:
A moisture removal device 10 actively discharges moisture in a complex-shape headlamp 1 using an electrolyte member 14. In order for the electrolyte member 14 not to be heated up when the moisture removal device 10 is used in an atmosphere in which a combustible gas exists, electrode members 19, 20 made of a metal having a sufficient heat-transfer effect are used. Further, by use of electrode portions 15, 15a of the electrode member 19, an opening portion 13 of a cylindrical convex portion 12 that protrudes into the headlamp 1 is closed, to thereby protect the electrolyte member 14.
摘要:
When an output current is shut off by disconnection, a control unit 7 causes a DC/DC converter 3 to immediately stop temporarily for suppression of an over-current at the time of restoration, and further causes the DC/DC converter 3 to repeat an temporary stop and an temporary operation by a predetermined number of times or for a predetermined period of time, in order to check whether the shut-off of the output current is transient or continuous, and causes the DC/DC converter 3 to stop continuously if the shut off is continuous, and extinguish an LED light source 4.
摘要:
A vehicle headlamp includes a light source section 1 for emitting light accompanied by heat; a heat pipe 3 thermally connected with the light source section for absorbing and transferring the heat generated by the light source section; a heat radiating member 4 furnished in a position away from the optical axis of the light generated by the light source section and closer to the front than the light source section to be thermally connected to the heat pipe, for radiating the heat transmitted by the heat pipe to produce a convection current; and a headlamp case 6 housing light source section, the heat pipe, and the heat radiating member such that a part of the front lens for transmitting the light from the light source section is formed above the heat radiating material.
摘要:
Problem to be Solved: In left and right independent lighting power sources, even when left and right light-emitting units each including one or a plurality of LEDs light up with a time difference, the quality of emission as headlamps is increased by making it difficult to visually identify the time difference.Solution: A DC/DC converter for supplying the electric power supplied by a battery to the light-emitting unit is operated to change the current supplied to the light-emitting unit such that the current is gradually increased to attain a rated current, to thus avoid the case where one of the left and right headlamps enters a lighting state, when the other does not light up yet.
摘要:
An image log management device that includes a correspondence relationship information storing component, an image log data storage component, an input component and a deletion component is provided. The correspondence relationship information storing component stores correspondence relationship information between an identifier of an input document subject to image forming processing, an identifier of an output document resulting from the image forming processing of the input document, and an identifier of image log data of the output document. The image log data storage component stores the image log data of the output document. The input component inputs document disposal information including an identifier of a disposal document that has been disposed of The deletion component, based on the document disposal information and based on the correspondence relationship information, selects the image log data requiring deletion and executes deletion processing thereon.
摘要:
A semiconductor memory device includes bodies electrically floating; sources; drains; gate electrodes, each of which is adjacent to one side surface of the one of the bodies via a gate dielectric film; plates, each of which is adjacent to the other side surface of the one of the bodies via a plate dielectric film; first bit lines on the drains, the first bit lines including a semiconductor with a same conductivity type as that of the drains; and emitters on the semiconductor of the first bit lines, the emitters including a semiconductor with an opposite conductivity type to that of the semiconductor of the first bit lines, wherein the emitters are stacked above the bodies and the drains.
摘要:
This disclosure concerns a memory including a memory cell including a drain, a source and a floating body, wherein when a refresh operation is executed, a first current is carried from the drain or the source to the body and a second current is carried from the body to the second gate electrode by applying a first voltage and a second voltage to the first gate electrode and the second gate electrode, the first voltage and the second voltage being opposite in polarity to each other, and a state of the memory cell is covered to an stationary state in which an amount of the electric charges based on the first current flowing in one cycle of the refresh operation is almost equal to an amount of the electric charges based on the second current flowing in one cycle of the refresh operation.