Yamanaka, Yokohama-Shi
Shingo Yamanaka, Yokohama-Shi JP
Patent application number | Description | Published |
---|---|---|
20130182992 | METHOD TO DRIVE SEMICONDUCTOR MACH-ZEHNDER MODULATOR - A Mach-Zehnder (MZ) modulator made of semiconductor material and a method to drive the MZ-modulator are disclosed. The MZ-modulator includes a pair of arms to vary the phase of the optical beam propagating therein. One of the arms further provides the phase presetter that varies the phase of the optical beam by π. The arms are driven by modulation signals complementary to each other but with the DC bias equal to each other. | 07-18-2013 |
20130216220 | OPTICAL TRANSMITTER IMPLEMENTED WITH TWO QPSK MODULATORS MADE OF SEMICONDUCTOR MATERIAL AND A METHOD TO CONTROL OPTICAL POWER OUTPUT THEREFROM - An optical transmitter implemented with two QPSK (Quadrature Phase Shift Keying) modulators is disclosed. Each of the QPSK modulators provides a waveguide made of semiconductor material inducing the QCSE (Quantum Confined Stark Effect) by a bias supplied thereto. The optical performance of one of the QPSK modulators is determined by supplying a deep bias to the other of the QPSK modulator to eliminate the optical output therefrom. | 08-22-2013 |
20140363175 | OPTICAL TRANSMITTER AND METHOD OF CONTROLLING OPTICAL TRANSMITTER - An optical transmitter includes a light source configured to generate direct current light; a multi-value modulator configured to modulate the direct current light; an opto-isolator configured to block output light of the multi-value modulator; a driving circuit configured to output a driving signal for driving the multi-value modulator; a bias control circuit configured to control a bias voltage applied to the multi-value modulator, according to an optical output power of the multi-value modulator; and a control circuit configured to control operations of the opto-isolator, the driving circuit and the bias control circuit, wherein the control circuit decreases an amplitude of the driving signal output from the driving circuit while synchronizing with the blocking of the output light of the multi-value modulator by the opto-isolator. | 12-11-2014 |
Toshiro Yamanaka, Yokohama-Shi JP
Patent application number | Description | Published |
---|---|---|
20150072445 | LITHOGRAPHY APPARATUS AND METHOD OF MANUFACTURING ARTICLE - A lithography apparatus which performs writing on a substrate using a charged particle beam is provided. The apparatus comprises a plurality of column units each of which comprises a charged particle optical system, a plurality of stages each of which is movable while holding the substrate, and a controller. The controller moves the stages in synchronization with each other in a positional relationship corresponding to an arrangement of the column units, and performs writing on substrates held in the stages simultaneously. | 03-12-2015 |
20150261099 | LITHOGRAPHY APPARATUS, AND METHOD OF MANUFACTURING ARTICLE - A lithography apparatus advantageous in increasing both a throughput and overlay accuracy is provided. The apparatus includes a plurality of charged particle optical systems each irradiating a substrate with a charged particle beam, and a plurality of alignment sensors including an alignment sensor located among the plurality of charged particle optical systems. A processor generates, in parallel with a patterning, information on at least one of a position and a shape of a region on the substrate based on outputs from the plurality of alignment sensors. | 09-17-2015 |
Yohei Yamanaka, Yokohama-Shi JP
Patent application number | Description | Published |
---|---|---|
20130202204 | IMAGE PROCESSING APPARATUS AND METHOD OF CONTROLLING THE SAME - Disclosed is an image processing apparatus for converting an original image. Processing of blurring an input original image is performed to generate a blurred image. A difference image that is the difference between the original image and an adjusted image obtained by adjusting the density of the blurred image is generated. The difference image and the original image are composited based on the density of the difference image and the density of the original image. This allows to easily obtain a painting-like effect even in, for example, a low-contrast portion of an image. | 08-08-2013 |
20150310588 | IMAGE PROCESSING APPARATUS, IMAGING APPARATUS, IMAGE PROCESSING METHOD AND STORAGE MEDIUM - At least one image processing apparatus is provided which allows performing a demosaicing process on a polychrome image signal with high accuracy. The at least one image processing apparatus performs an interpolation process in each of a plurality of defined directions on a mosaic image signal and acquires an evaluation value representing a correlation in each of a horizontal direction and a vertical direction for each of a plurality of pixels of the image signal having undergone the interpolation process. The evaluation values for at least one pixel of interest are corrected based on the evaluation values for peripheral pixels if a predetermined condition including a condition that it is determined that the at least one pixel of interest is an isolated point is satisfied. Then, the image signal after the at least one pixel of interest is interpolated based on the corrected evaluation values. | 10-29-2015 |
20150310589 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM - A demosaicing unit interpolates mosaic image data of each pixel of interest so as to reproduce colors missing at each pixel by interpolation using neighboring pixels. In the demosaicing unit, an interpolation unit performs an interpolation process in a plurality of prescribed directions using neighboring pixels in the prescribed directions. An evaluation unit evaluates image data in each prescribed directions interpolated by the interpolation unit. A spurious resolution area judgment unit judges whether a pixel is in a spurious resolution area, on a pixel-by-pixel basis, based on a saturation detected from image data subjected to an interpolation process performed so as to preserve an edge component. An image generation unit selects image data to be interpolated for each pixel based on a result of the evaluation by the evaluation unit and a result of the judgment by the spurious resolution area judgment unit, and generates interpolated image data. | 10-29-2015 |