Patent application number | Description | Published |
20140284630 | OPTICAL COUPLING DEVICE - According to one embodiment, an optical coupling device includes a light emitting element configured to convert an electric signal into an optical signal, a photo transistor circuit configured to convert the optical signal into a current, the photo transistor circuit including a first transistor having a collector connected to a power source and an emitter through which the current is output, and a current mirror circuit including a second transistor having a collector connected to the emitter of the first transistor, a base connected to the emitter of the first transistor, and an emitter connected to a ground, and a third transistor having a collector connected to an output terminal, a base connected to the base of the second transistor, and a emitter connected to the ground. | 09-25-2014 |
20150198481 | OPTICAL COUPLING DEVICE - A method for transmitting a signal using an optical coupling device includes converting a first electric signal into an optical signal, converting the optical signal into a first current, and outputting a second current that corresponds to the first current as a second electric signal. The second current may be larger than the first current. | 07-16-2015 |
Patent application number | Description | Published |
20100224768 | OPTICAL ENCODER, MOTOR, AND MOTOR SYSTEM - An optical encoder includes a rotation disc, an annular slit, a light source, an absolute-value-related detecting unit, and a signal processing device. The annular slit includes a first annular slit and a second annular slit which are decentered in a mutually different direction. The light source is configured to irradiate light on the annular slit. The absolute-value-related detecting unit is configured to detect transmitted light or reflected light irradiated from the light source and transmitted or reflected at the annular slit to output a detected signal. The absolute-value-related detecting unit includes a first detecting unit corresponding to the first annular slit and a second detecting unit corresponding to the second annular slit. The signal processing device is configured to detect an absolute rotational angle of the rotation disc based on the detected signal output from the absolute-value-related detecting unit. | 09-09-2010 |
20110068731 | LINEAR ENCODER, LINEAR MOTOR SYSTEM, AND METHOD OF MANUFACTURING LINEAR ENCODER - An encoder includes: a main scale having two or more band-shaped tracks in each of which an optical main grating is formed so that longitudinal direction of the main scale corresponds to a measurement axis direction; and an index scale opposed to the main scale so as to form a diffraction interference optical system in cooperation with the main grating, disposed so as to be movable relative to the main scale in the measurement axis direction, and in which two or more optical index gratings are formed. A plurality of slits included in the main grating in at least one track are formed so as to be inclined at a predetermined inclination angle from a direction perpendicular to the measurement axis direction so that pitch of the slits in the track becomes equal to the pitch of the slits in the at least one other track. | 03-24-2011 |
20110069390 | ROTARY ENCODER, ROTARY MOTOR, ROTARY MOTOR SYSTEM, DISK, AND METHOD OF MANUFACTURING ROTARY ENCODER - An encoder includes a disc-shaped disk disposed so as to be rotatable about a rotation axis and having at least one ring-shaped track in which a rotating grating is formed and at least one fixed grating which is fixedly disposed opposed to the disk so that the fixed grating and the rotating grating construct a diffraction interference optical system. Each of a plurality of slits included in the at least one rotating grating is formed along a curved line obtained by making each of a plurality of radial lines using the rotation axis as a center curved in the circumferential direction at a predetermined curve degree so that a pitch of the slits can be set to a predetermined value. | 03-24-2011 |
20120206024 | SERVO MOTOR MANUFACTURING METHOD, SERVO MOTOR MANUFACTURING APPARATUS, SERVO MOTOR, AND ENCODER - This disclosure discloses a servo motor manufacturing method, includes a disk position adjusting that adjusts a position of a rotating disk with respect to a shaft, in a case where said rotating disk to which at least one concentric pattern is formed around a disk center is to be fixed to said shaft of a motor, wherein in said disk position adjusting, said concentric pattern is used as a scale of a linear encoder to adjust an eccentricity of said rotating disk. | 08-16-2012 |
Patent application number | Description | Published |
20080260266 | Encoding apparatus, encoding method, and computer product - An encoding apparatus encodes a picture by inserting an intra-refresh area into a portion of the picture periodically based on an intra-refresh period. An encoding-status monitoring unit monitors an encoding status of the picture. A refresh-area control unit changes at least one of the intra-refresh area and the intra-refresh period based on the encoding status monitored by the encoding-status monitoring unit. | 10-23-2008 |
20100189184 | Coding apparatus, coding method, and coding circuit - A coding apparatus is for performing a deblocking filter process by dividing input moving image data into frames, and coding the moving image data by dividing the frames into macroblock lines and by shifting and changing, for each frame, a refresh area in which an amount of coding information allocated to a specific macroblock line is larger than that of another macroblock line. The coding apparatus includes a determining unit that determines that a refresh area in a current frame as well as a macroblock line in the current frame corresponding to a macroblock line that will become a refresh area in a frame being subsequently subjected to the coding process becomes a next refresh area. The coding apparatus includes a coding unit that codes the refresh area and the next refresh area by allocating a larger amount of coding information than an amount allocated to the other macroblock line. | 07-29-2010 |
20100272170 | IMAGE ENCODING APPARATUS, IMAGE ENCODING METHOD AND MEDIUM ON WHICH IMAGE ENCODING PROGRAM IS RECORDED - An image encoding apparatus configured to perform sub-band encoding, the apparatus includes: a plurality of encoding units configured to encode an image signal separated into a plurality of sections; a plurality of storage units configured to hold data encoded by the encoding units; and a control unit configured to determine capacities of encoded data of the section of the separated image signal on the basis of statistical information capacities of the section of the separated image signal and data capacities after encoding by the encoding units. | 10-28-2010 |
20140369425 | ELEMENTARY STREAM MULTIPLEXING METHOD, MULTIPLEXING SYSTEM, ENCODING OR DECODING METHOD AND APPARATUS - At the time of an encoding process, a video elementary stream is generated and output by capturing and encoding a video image signal at a time interval of a video frame synchronous with a timing of a video synchronization signal, and an audio elementary stream is generated by capturing and encoding an audio signal at each audio interval. An audio packetized elementary stream where one packet has a stream length corresponding to the time interval of the video frame is multiplexed with the audio elementary stream, and the stream is output. | 12-18-2014 |