Patent application number | Description | Published |
20130106470 | CONTROL DEVICE | 05-02-2013 |
20130127438 | PHOTOCOUPLER OUTPUT SIGNAL RECEIVING CIRCUIT - In aspects of the invention, a photocoupler output signal receiving circuit includes a first constant current circuit, connected between an input terminal and the high potential side of a direct current power source, that discharges current, a second constant current circuit, connected between the input terminal and the low potential side of the direct current power source, that takes in current, and switching elements that operate the first and second constant current circuits in a complementary way, wherein the switching elements are operated so that current is taken in by the second constant current circuit after a photocoupler is turned on, and are operated so that current is discharged by the first constant current circuit after the photocoupler is turned off, and a discharge current value in a current discharge period is reduced after a certain period elapses from the start of discharging. | 05-23-2013 |
20130147525 | DRIVE CIRCUIT FOR INSULATED GATE SWITCHING ELEMENT - Embodiments of the invention provide a drive circuit including: a constant current source that generates a constant current; a switching circuit that connects a gate of the insulated gate switching element to a power supply potential side via the constant current source when turning the insulated gate switching element ON and connects the gate of the insulated gate switching element to a reference potential side via a discharge circuit when turning the insulated gate switching element OFF; a gate voltage detection circuit that detects a gate voltage of the insulated gate switching element; and a current mode selection circuit that switches a mode of the constant current source from a normal current mode to a low current consumption mode when detecting, based on the gate voltage detected by the gate voltage detection circuit, that the insulated gate switching element is turned ON. | 06-13-2013 |
20150188410 | POWER CONVERSION DEVICE - A power conversion device, including first and second semiconductor switching elements, first and second free wheeling diodes respectively connected in reverse parallel to the first and second semiconductor switching elements, and first and second drive circuits configured to respectively on/off drive the first and second semiconductor switching elements. The first and second semiconductor switching elements are connected in series to form a half bridge circuit and are respectively disposed on upper and lower arms of the half bridge circuit. The second drive circuit includes an alarm signal generation circuit configured to generate different alarm signals upon detecting overcurrent in different arms of the half bridge circuit. | 07-02-2015 |
Patent application number | Description | Published |
20130246730 | SEMICONDUCTOR MEMORY DEVICE AND METHOD FOR WRITING THEREIN - According to one embodiment, a semiconductor memory device includes a plurality of blocks in a memory cell, each of the blocks acting as an erasure unit of data, the block including a plurality of pages, each of the pages including a plurality of memory cell transistors, each of the memory cell transistors being configured to be an erasure state or a first retention state based on a threshold voltage of the memory cell transistor, and a controller searching data in the block with respect to, writing a first flag denoting effective into a prescribed page of the block with the erasure state, and writing the first flag denoting non-effective into a prescribed page of the block with the first retention state, reading out the prescribed page of the block with the first retention state, and determining that the block is writable when the first flag denotes effective. | 09-19-2013 |
20140286108 | SEMICONDUCTOR MEMORY DEVICE - According to one embodiment, a semiconductor memory device includes n (n being a natural number of 2 or more) data retention circuits connected to a data input/output terminal; n buses connected respectively to the n data retention circuits; m×n data latch circuits connected to the buses, with m (m being a natural number of 2 or more) data latch circuits being connected per one of the buses; and a selection circuit configured to simultaneously perform data transfer from/to the data retention circuits for a plurality of the data latch circuits in units of a group including the plurality of the data latch circuits, the data latch circuits being divided into the groups so that not all the data latch circuits connected to the same bus are included in the same group. | 09-25-2014 |
20150078091 | SEMICONDUCTOR MEMORY DEVICE - According to one embodiment, a semiconductor memory device includes: a memory cell array; a first data latch; a second data latch; a first data bus; a second data bus; a first temporary latch; a second temporary latch; and a control unit. The first and the second data latches are electrically connected to the memory cell array. The first data bus is electrically connected to the first data latch. The second data bus is electrically connected to the second data latch. The first temporary latch is electrically connected to the first data bus. The second temporary latch is electrically connected to the second data bus. The control unit is configured to write data on the first temporary latch and transfer data retained in the first temporary latch to the first data latch while writing data on the second temporary latch. | 03-19-2015 |
Patent application number | Description | Published |
20120162327 | INK CARTRIDGE - An ink cartridge includes an ink bag that is configured to store ink inside, a spout that is provided on the ink bag and includes a hollow portion that leads from a first opening to a second opening, and a case that houses the ink bag, an end portion of the case on a side of the second opening including at least a first corner portion, a second corner portion, and a first surface portion, a width in a first direction being smaller than a width in a second direction in the case, an axial line of the spout being, in the second direction, located closer to one end portion of the case on a side having the first corner portion, and the leading end portion of the spout being located inside of the case with respect to the line connecting the first corner portion and the second corner portion. | 06-28-2012 |
20120162328 | INK CARTRIDGE - An ink cartridge includes an ink bag that is configured to store ink inside, a spout that is provided on the ink bag and that includes a hollow portion that leads from a first opening to a second opening, and a case that houses the ink bag, an end portion of the case on a side of the second opening including at least a first corner portion and a second corner portion, a width in a first direction being smaller than a width in a second direction in the case, an axial line of the spout being, in the second direction, located closer to one end portion of the case on a side having the first corner portion, and the leading end portion of the spout being located inside of the case with respect to the line connecting the first corner portion and the second corner portion. | 06-28-2012 |
20120162329 | INK CARTRIDGE - An ink cartridge includes an ink bag that is configured to store ink inside, a spout that is provided on the ink bag and that includes a hollow portion that leads from a first opening to a second opening, and a case that houses the ink bag, an end portion of the case on a side of the second opening including at least a first corner portion and a second corner portion, a width in a first direction being smaller than a width in a second direction in the case, an axial line of the spout being, in the second direction, located closer to one end portion of the case on a side having the first corner portion, and at least one of the first corner portion and the second corner portion forming one of an obtuse angle and a curved surface. | 06-28-2012 |
20120249694 | INK CARTRIDGE - An ink cartridge includes an ink bag that stores ink, a substantially box-shaped case that houses the ink bag, a recessed portion that is disposed in an end portion of the case, and that is indented in a direction further to an inner side of the case than an outer surface of the case such that that the recessed portion is open in at least two directions with respect to the outer surface of the case, and a protruding portion that protrudes from a bottom portion of the recessed portion. | 10-04-2012 |