摘要:
A circuit for supplying a stress to memory cells of a semiconductor memory device having the plurality of the memory cells respectively connected to a word line and a bit line comprises a circuit for generating precharge voltage for bit line, a bit line precharging and equalizing circuit which is connected between said circuit for generating precharge voltage for bit line and said memory cells, a pad connected to the bit line precharging and equalizing circuit for applying a desirable voltage to said memory cells through the corresponding bit lines, and a circuit connected to the circuit for generating precharge voltage for bit line for generating a signal for stopping the operation of said circuit for generating precharge voltage for bit line, whereby cell checker patterns can easily be realized in order to screen out possible failures not only in gate oxide films but also in capacitor dielectrics, storage node junctions or the like by applying an arbitrary stress voltage from the outside of the device.
摘要:
A memory cell array of a semiconductor memory device is split into memory blocks. A DRAM/nonvolatile mode switching circuit makes each memory cell operate similarly to a DRAM when each memory block is accessed from the exterior while making each memory cell operate as a nonvolatile memory cell to require no refreshment when each memory block is not accessed for a constant period. An internal timer circuit manages a waiting time for the memory block shifting to a nonvolatile mode after entering a non-accessed state. Thus, the semiconductor memory device can attain stable power consumption reduction hardly influenced by a user state.
摘要:
A surface-mounting structure of a surface-mounting electronic device onto the surface of a circuit medium is provided. An external terminal of the device has a first mounting surface on which a first set of protrusions are formed. The first mounting surface includes a first uncovered space in the remaining area of the first set of protrusions. A mounting pad of the circuit medium has a second mounting surface on which a second set of protrusions are formed. The second mounting surface includes a second uncovered space in the remaining area of the second set of protrusions. The second mounting surface is opposite to the first mounting surface. The second set of protrusions are inserted into the first uncovered space. The first set of protrusions are inserted into the second uncovered space. A bonding material is placed between the first and second mounting surfaces. The bonding material provides a mechanical engagement between the first and second mounting surfaces, thereby mechanically and electrically connecting the terminal of the device onto the mounting pad of the circuit medium. The mounting process and its process control are simplified, and connection accuracy and reliability are improved.
摘要:
An image processing device includes: a non-target region detecting unit that detects a region that is not to be examined as a non-target region from an image; a pixel-of-interest region setting unit that sets a pixel-of-interest region in a predetermined area including a pixel-of-interest position in the image; a surrounding region determining unit that determines a surrounding region, which is an area for acquiring information for use in forming a reference plane with respect to the pixel-of-interest position, based on the non-target region; a reference plane forming unit that forms the reference plane based on the information in the surrounding region; and an outlier pixel detecting unit that detects an outlier pixel having a pixel value numerically distant from circumferential values based on a difference between corresponding quantities of the reference plane at each pixel position and of the original image.
摘要:
An image processing apparatus includes a probability value calculator that calculates, based on color feature data of a pixel included in an image, respective probabilities that the pixel belongs to a specific area and a non-specific area; a weighted edge intensity calculator that calculates a weighted edge intensity between neighboring pixels based on pixel values and color feature data of the pixel included in the image and a neighboring pixel of the pixel; an energy function creator that uses the probabilities and the weighted edge intensity to create an energy function expressed by a result of an area determination of the pixel; and an area divider that divides the image into the plurality of areas based on the energy function.
摘要:
An image processing apparatus includes: a gradient information calculating unit that calculates gradient information of each of pixels, based on pixel values of an intraluminal image; a closed region creating unit that, based on the gradient information, creates a closed region satisfying a condition where the closed region does not include, on the inside thereof, any pixel of which the gradient strength is equal to or higher than a predetermined value, and also, the boundary of the closed region does not curve toward the interior of the closed region, with a curvature equal to or larger than a predetermined value; and an abnormal part detecting unit that detects an abnormal part from the inside of the closed region.
摘要:
An image processing apparatus includes a gradient strength calculating unit that calculates a gradient strength of respective pixel values based on an intraluminal image; an extracting unit that extracts a closed region satisfying conditions that the pixel of which gradient strength is a predetermined value or more is not included in the region and a boundary of the region does not bend with a predetermined curvature or higher toward an inner side of the region; and a detecting unit that detects an abnormal portion inside the region. The extracting unit includes a setting unit that sets an initial shape of the region; an energy calculating unit that calculates values of types of energy including at least energies determined respectively by an outer shape of the region and the gradient strength; and an energy-weighted sum calculating unit that calculates a weighted sum of the types of energy.
摘要:
An apparatus includes a calculating unit that calculates gradient strength of respective pixel values based on an intraluminal image, an extracting unit that extracts a closed region from the image, and a detecting unit that detects an abnormal portion of the closed region. The closed region satisfies conditions that the pixel of which gradient strength is a predetermined value or more is not included in the closed region and a boundary of the closed region does not bend with predetermined curvature or higher toward an inner side of the closed region. The extracting unit includes a setting unit that sets an initial closed region based on the gradient strength, an energy calculating unit that calculates values of types of energies based on an outer shape of the closed region and the gradient strength, and an energy weighted-sum calculating unit that calculates a weighted sum of the types of energy.
摘要:
A nonvolatile semiconductor memory device is provided which can accurately read data with low consumption current. The flash memory selects a memory cell according to an external address signal in response to the leading edge of a clock signal and reads data from the memory cell in response to the leading edge of the clock signal in the normal read mode, whereas, in the low-speed read mode for performing a read operation with lower power consumption than that of the normal read mode, reads data from the memory cell in response to the trailing edge of the clock signal. Therefore, data can be accurately read even if noise is generated in response to the leading edge of the clock signal in the low-speed read mode, because the noise level has dropped at the trailing edge of the clock signal.
摘要:
An image processing apparatus includes a motion-vector calculating unit that calculates motion vectors among images taken by an imaging device; a candidate-center calculating unit that calculates candidate centers of a movement of the imaging device and/or candidate centers of a movement of an imaging subject seen on each of the images based on the motion vectors calculated by the motion-vector calculating unit; a reliability calculating unit that calculates a reliability of each of the candidate centers based on a distance between the candidate centers calculated by the candidate-center calculating unit; and a motion-information obtaining unit that obtains information for detecting a motion change among the images taken by the imaging device based on the reliability calculated by the reliability calculating unit.