Patent application number | Description | Published |
20090034391 | OPTICAL INFORMATION REPRODUCING METHOD, OPTICAL INFORMATION REPRODUCING DEVICE, AND OPTICAL INFORMATION RECORDING MEDIUM - [Problems] To provide an optical information reproducing device capable of performing excellent super resolution reproduction at all times without complicating the hardware structure. | 02-05-2009 |
20110316458 | THREE-PHASE MOTOR CONTROLLER, THREE-PHASE MOTOR SYSTEM, THREE-PHASE MOTOR CONTROL METHOD AND PROGRAM - A three-phase motor control apparatus 4 controlling a driver which drives a three-phase motor includes: a desired rotation angle generation section 5 which generates a desired rotation angle; a rotation angle detector 2 which detects a detected rotation angle which is the rotation angle of said three phase motor; a feedback controller 6 which generates a q-axis command reference value which controls the q-axis voltage or the q-axis current of the three-phase motor 1 in response to the desired rotation angle and the detected rotation angle; a drive torque correction section and an adder 10 which generate a q-axis command value by correcting the q-axis command reference value; and a two-phase to three-phase transformation section 8 which generates a control signal which controls the driver circuit 3 which drives the three-phase motor in response to the q-axis command. The drive torque correction section 7 includes an angle look-up table 11 which contains elements respectively associated with angle ranges defined for the rotation angle of the three-phase motor, and selects any of the elements in response to the detected rotation angle. The q-axis command is generated by correcting the q-axis command reference value based on the value of the selected element. | 12-29-2011 |
20120114337 | CAPTURING DEVICE, CAPTURING METHOD, AND CAPTURING PROGRAM - There have been problems that a capturing device requires an optical source having a large power output, and a scanning operation and a capturing operation must be alternately performed by the respective devices. | 05-10-2012 |
20120127551 | SMALL SIZE FAST STEERING MIRROR HAVING SMALL SIZE AND EXCELLENT VIBRATION CHARACTERISTICS - A fast steering mirror has n plate springs ( | 05-24-2012 |
20130026966 | MOTOR CONTROL APPARATUS, MOTOR CONTROL METHOD, MOTOR SYSTEM, AND COMPUTER-READABLE MEDIUM - A motor control apparatus that controls the rotational angle of a motor ( | 01-31-2013 |
20130038223 | Image Display Device and Light Emission Timing Control Method - An image display device includes: excitation light source ( | 02-14-2013 |
20130278906 | PROJECTOR AND CONTROL METHOD - A projector includes a screen having a periodic array of color stripes for producing visible light depending on incident light, a light source that remits a light beam, a projection unit that scans an area of the screen where the color stripes are disposed, with the light beam in a direction across the color stripes, to display an image on the screen, a detector that detects the visible light from each of the color stripes as a feedback light pulse, and a controller that adjusts a start-of-emission timing of the light source based on a start-of-detection timing at which the feedback light pulse is detected by the detector and a detection period during which the feedback light pulse is detected by the detector, and controlling the light source to emit the light beam in order to apply light pulses to the color stripes within boundaries thereof. | 10-24-2013 |
20130285559 | FLUORESCENT SCREEN AND IMAGE DISPLAY DEVICE COMPRISING SAME - A fluorescent screen includes a phosphor layer including a phosphor that absorbs excitation light to emit fluorescence, a reflecting layer that is provided on one surface of the phosphor layer so as to transmit the excitation light and to reflect, to the phosphor layer, a part of fluorescence that is emitted from the phosphor and that exits from the one surface; and a plurality of holes that penetrates the reflecting layer. | 10-31-2013 |
20130320236 | IMAGE DISPLAY DEVICE - An image display device includes an excitation light source; a fluorescent screen including a plurality of phosphor regions that are repeatedly formed in an in-plane direction and a retro-reflection region that reflects a part of incident light in the opposite direction of the incident light; a scanning unit that scans a surface of the fluorescent screen on which the phosphor regions and the retro-reflection region are formed with excitation light from the excitation light source; a photo detection unit that outputs signal value that varies on the basis of an incident light amount onto the photo detection unit; a reflection unit that reflects retro-reflection light of the excitation light directed from the retro-reflection region to the photo detection unit; and a control unit that causes the scanning unit to scan the fluorescent; detects boundaries between the phosphor regions and the retro-reflection region on the fluorescent screen based on the output signal of the photo detection unit, and controls a light emission timing of the excitation light source based on the detected boundaries. | 12-05-2013 |
20130335641 | Projection System, Projection-type Image Display Device, and Multi-Projection System - A projection screen includes: phosphor regions arranged cyclically in an in-plane direction of a display region; a plurality of black stripes and reference black stripes that partition the display region into the phosphor regions; and an optical information formation unit that is provided in a specific position within the display region and that generates readable optical information. | 12-19-2013 |
20140118988 | Fluorescent Screen and Image Display Device Provided with Same - A fluorescent screen includes phosphor regions | 05-01-2014 |