Patent application number | Description | Published |
20130201497 | DENSITY DETECTION APPARATUS AND METHOD AND IMAGE FORMING APPARATUS - A density detection apparatus includes the following elements. An image forming unit forms density detection images having different area ratios. A measuring unit measures an amount of reflected light. A storage unit stores reference values and also stores a representative value thereof. A determining unit determines a threshold for the area ratios of the density detection images on the basis of a variation among the reference values. A density obtaining unit obtains, for a density detection image having an area ratio which exceeds the threshold, a density level by using the amount of light reflected by the density detection image and the representative value, and obtains, for a density detection image having an area ratio which is equal to or smaller than the threshold, a density level by using the amount of light reflected by the density detection image, the associated reference value, and the representative value. | 08-08-2013 |
20130208288 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND RECORDING MEDIUM - An image forming apparatus includes a controller that provides control in which, if image formation processing by a single unit is executed first since a density adjustment condition for adjusting a density of an image is satisfied, a density adjustment value is changed by a predetermined basic change amount, and a first image is formed in a corresponding image formed region with a density that is adjusted in accordance with the changed density adjustment value, and control in which, if a single image other than the first image is formed in the corresponding image formed region, the current density adjustment value is changed by a predetermined fine change amount that is smaller than the basic change amount, and the single image is formed in the corresponding image formed region with a density that is adjusted in accordance with the changed density adjustment value. | 08-15-2013 |
20130242333 | DENSITY DETECTION APPARATUS AND METHOD AND IMAGE FORMING APPARATUS - A density detection apparatus includes the following elements. A storage unit stores therein image information. A measuring unit measures amounts of light components reflected by an image carrier or density detection images represented by the image information. A light amount obtaining unit obtains a variation in amounts of light components reflected by each region in which the associated density detection image is formed, and obtains, as a reference value, a representative value of the amounts of light components. An image correcting unit corrects the image information by changing an arrangement order of the density detection images. An image forming unit forms the density detection images on the image carrier on the basis of the corrected image information. A density obtaining unit obtains density levels of density detection images corresponding to their area ratios by using the amounts of light components reflected by the density detection images and the reference values. | 09-19-2013 |
Patent application number | Description | Published |
20100128989 | CORRELATION PROCESSING APPARATUS AND MEDIUM READABLE BY CORRELATION PROCESSING APPARATUS - A correlation processing apparatus that obtains a correlation value between an image and a subimage, the apparatus including: N arithmetic circuits, each of the N arithmetic circuits performing an arithmetic operation on a first image pixel value of a first image pixel of the image and a second image pixel value of a second image pixel of the subimage; a rectangular pattern selection circuit selecting a rectangular pattern among a plurality of predetermined rectangular patterns, the rectangular pattern including Q elements, the smallest number of divisions is obtained if the image is divided by the rectangular pattern; a control circuit activating Q arithmetic circuits among the N arithmetic circuits and identifying Q first image pixel values and Q second image pixel values on which the arithmetic operations are performed by the Q arithmetic circuits; and an accumulator accumulating the results of the arithmetic operations performed by the Q arithmetic circuits. | 05-27-2010 |
20110093429 | SEARCH DEVICE AND SEARCH METHOD - A search device includes an accelerator and a CPU. The accelerator includes a plurality of search cores and a scheduler. The scheduler is configured to distribute target text to the search cores in units of records ordered by record sequence number, and the search cores are configured to perform automaton matching on the distributed records in a parallel fashion. The CPU is configured to construct an automaton in accordance with a search expression input thereto, and to perform logical expression evaluations in order of the record sequence number on matching results obtained on a record-by-record basis. | 04-21-2011 |
20130254516 | ARITHMETIC PROCESSING UNIT - An arithmetic processing unit that performs processing of a stream-type includes an arithmetic unit configured to operate an input operand to obtain a result of operation; and a data input and output unit configured to read the input operand out of a memory when an instruction which is issued in a case where a stream length of the input operand is shorter than a stream length of an output operand corresponding to the input operand and includes data indicating a recursive rule used when the input operand is read out, to supply the read input operand, and to store the result of the operation obtained by the arithmetic unit in the memory as the output operand, wherein the arithmetic unit | 09-26-2013 |
Patent application number | Description | Published |
20130262548 | MATRIX CALCULATION UNIT - A matrix calculation unit may include a matrix operation unit and a converting unit. The matrix operation unit may include functions to perform a matrix operation of a first size with respect to data stored in a memory, and to perform a matrix operation of a second size with respect to the data stored in the memory, where the second size is enlarged from the first size. The converting unit may convert in at least one direction in the memory between a data array suited for the matrix operation of the first size and a data array suited for the matrix operation of the second size. | 10-03-2013 |
20140237010 | DATA PROCESSING APPARATUS, DATA PROCESSING METHOD, AND COMPUTER PRODUCT - A data processing apparatus includes a computing unit that performs a matrix computation between data streams whose unit data is of a matrix format; a determining unit that for each matrix obtained by the matrix computation by the computing unit, determines based on the value of each element included in the matrix, an exponent value for expressing each element included in the matrix as a floating decimal point value; a converting unit that converts the value of each element into a significand value of the element, according to the exponent value determined by the determining unit; and an output unit that correlates and outputs the exponent value and each matrix after conversion in which the value of each element in the matrix has been converted by the converting unit. | 08-21-2014 |
20140317164 | ARITHMETIC PROCESSING DEVICE - An arithmetic processing device includes: an arithmetic unit configured to execute an arithmetic operation; and a stream engine configured to execute stream processing, wherein a data bus of the arithmetic unit and a data bus of the stream engine are tightly coupled with each other. | 10-23-2014 |
20150081987 | DATA SUPPLY CIRCUIT, ARITHMETIC PROCESSING CIRCUIT, AND DATA SUPPLY METHOD - An data supply circuit includes a buffer configured to store a plurality of data items each having a first width, a memory access unit configured to read source data stored in memory and to store the source data as one or more data items each having the first width in the buffer, and a selection control unit configured to repeat multiple times an operation of reading a data item having a second width shorter than or equal to the first width to read a plurality of data items each having the second width contiguously and sequentially from the buffer and configured to continue to read from a head end of the source data upon a read portion reaching a tail end of the source data. | 03-19-2015 |
Patent application number | Description | Published |
20110242545 | ASPHERIC SURFACE MEASURING APPARATUS - An aspheric surface measuring apparatus includes a sample holder mechanism and an interferential optical mechanism, and performs optical interferometric measurement while rotating a sample every time a measurement angle is varied. The sample holder mechanism has a first air spindle for rotating the sample about a test surface axis and a first airslide. The first airslide carries the sample orthogonally or parallel to the test surface axis. The interference optical mechanism has an interference optical system, a first imaging system, and a second imaging system, a second air spindle, and a second airslide. The second spindle revolves or turns the interference optical system and the first and second imaging systems integrally to change a measurement angle between the measurement optical axis and the test surface axis. The second airslide carries the second air spindle orthogonally to the moving direction of the first airslide. | 10-06-2011 |
20110304856 | LIGHTWAVE INTERFERENCE MEASUREMENT APPARATUS - A microinterferometer applies low coherent measurement light, which travels along an optical axis in a converging manner, to a front surface of a flange. A part of the measurement light is reflected inside an interferometric optical system, and becomes reference light. Apart of the measurement light passed through the interferometric optical system is reflected from the front surface of the flange, and is incident again upon the interferometric optical system. By combining the reflected light with the reference light, interference light is obtained. While a sample rotating stage rotates a sample lens through 360 degrees, a first imaging camera having one-dimensional image sensor captures 3600 images of the interference light, i.e., the image of the interference light is captured every time the sample lens is rotated by 0.1 degrees. Based on the images of interference fringes, the shape of the front surface of the flange is analyzed. | 12-15-2011 |