Patent application number | Description | Published |
20080212157 | Optical switching system and control method for micro mirror - An optical switching system includes a connection information memory portion ( | 09-04-2008 |
20090060416 | Wavelength selective switch - A wavelength selective switch of the present invention angularly disperses lights output from a plurality of input ports of an input and output optical system, to an X-direction, according to wavelength, by a diffraction grating to supply the dispersed lights to a condenser lens. The condenser lens is arranged so that a center axis thereof is shifted to the X-direction relative to an axis passing through the center of spreading angle to the X-direction of output beams from the diffraction grating, and accordingly, at a non-operating time, the light of each wavelength passed through the condenser lens is incident on each movable mirror being tilted by an offset angle corresponding to a shift amount of the condenser lens. As a result, it becomes possible to block the connection between an input side and an output side at the non-operating time without degrading the performance at an operating time. | 03-05-2009 |
20090250591 | System, device, and method for optical wavefront control - An optical wavefront control system by which the number of optical components or costs can be reduced. If an optical wavefront control system comprising an optical wavefront control section for controlling, in accordance with a wavefront control signal for controlling a phase of a wavefront of input light inputted and an aberration control signal for controlling an aberration of the input light inputted, the phase and the aberration and for outputting output light, a detection section for detecting optical information regarding a wavefront and an aberration of the output light inputted from the optical wavefront control section, and a control circuit section for outputting the wavefront control signal and the aberration control signal to the optical wavefront control section on the basis of the optical information detected by the detection section is used, the wavefront of the input light can be controlled and the aberration can be corrected. Accordingly, there is no need to locate another optical component for correcting the aberration. | 10-08-2009 |
20100033796 | Optical module, optical control method by optical module, optical switch, and optical switching method - An optical module includes a mirror which reflects input light and which outputs output light; and a mirror control section which is opposite to the mirror and which controls, at the time of the input light being reflected from a reflecting surface of the mirror, the reflecting surface by distorting the reflecting surface according to voltage applied to the mirror so as to output the output light an optical coupling characteristic of which changes. By using this optical module, the optical coupling characteristic of the output light changes. | 02-11-2010 |
20100254715 | Driving method and driving apparatus for optical modulator, and optical transmitter using same - A driving apparatus supplies a drive signal to an optical modulator corresponding to a phase modulation format, and also, divides a part of an output light from the optical modulator; extracts some optical component of the divided light, which is distant from a carrier frequency by integral multiple of a modulation frequency, to detect a power of the optical component; and feedback controls a duty ratio of the drive signal or a cross-point level thereof so that the detected power approaches a minimum value. Thus, it is possible to stably perform phase modulation with high precision. | 10-07-2010 |
20120076496 | Optical communication system, optical network management apparatus and optical network management method - An optical communication system includes a plurality of wavelength selective switches arranged on an optical network; and an optical network management apparatus configured to manage and control the optical network. In response to a path establishing request, the optical network management apparatus determines power consumption of each path that satisfies the path establishing request in the optical network based upon a wavelength being used at a connection port of each of the wavelength selective switches, selects a route based upon the determined power consumption of each of the path, and sets the selected route in the optical network. | 03-29-2012 |
20130022352 | OPTICAL NETWORK AND OPTICAL PATH SETUP METHOD - An optical network includes: an optical switch; a plurality of optical interface devices provided respectively for a plurality of servers and connected to the optical switch; and a manager to manage communication traffic of the plurality of servers. Each of the optical interface devices includes a fixed-wavelength optical transmitter and a wavelength tunable optical transmitter. A first optical path is set up via the optical switch by using the fixed-wavelength optical transmitters of the plurality of optical interface devices. The manager identifies first and second optical interface devices from among the plurality of optical interface devices in accordance with the communication traffic of the plurality of servers. A second optical path is set up between the first and second optical interface devices via the optical switch by using the wavelength tunable optical transmitters of the first and second optical interface devices. | 01-24-2013 |
20130055257 | COMMUNICATION METHOD AND COMMUNICATION APPARATUS - A gateway apparatus relays communication between first and second servers provided in a data center and an external communication apparatus located outside the data center. A control apparatus obtains an observation result obtained by observing a communication amount being an amount of data transmitted/received per unit time for each of virtual machines operating in the first and second servers in association with a transmission source and a destination of the data. When the first number of hops is smaller than the second number of hops, the control apparatus controls an arrangement of the virtual machines so that the virtual machine whose communication amount with the external communication apparatus is larger is more likely to be placated in the first server. | 02-28-2013 |
20130343396 | INFORMATION PROCESSING SYSTEM, RELAY DEVICE, INFORMATION PROCESSING DEVICE, AND INFORMATION PROCESSING METHOD - An information processing system includes a plurality of computers, a plurality of relay devices having a memory which stores a first parameter combination for selecting a first transfer path from a plurality of paths for coupling to each of the plurality of computers, and a management computer which stores, in the memory, a second parameter combination for selecting a second transfer path from the plurality of paths when a traffic of any one of couplings for coupling each of the plurality of relay devices exceeds a given amount, wherein the plurality of relay devices set a transfer destination of received data by selecting information corresponding to computer combination information included in the received data from any one of the first parameter combination and the second parameter combination. | 12-26-2013 |
20140029437 | INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD, AND RELAY APPARATUS - An information processing system includes a relay apparatus configured to select a first route by an operation on the basis of a first address in a packet, and a computer configured to change, when congestion occurs in the first route, an address in the packet from the first address to a second address which causes the relay apparatus to select a second route having a destination the same as that of the first route by the operation. | 01-30-2014 |
20140143426 | INFORMATION PROCESSING METHOD, RECORDING MEDIUM, AND INFORMATION PROCESSING DEVICE - An information processing method includes dispersively assigning a virtual machine and a storage device that stores data to be processed by the virtual machine, to a combination of data centers coupled to each other through a relay device, reducing a response time from a time when a request for a process is transmitted to the virtual machine to a time when a result of the process is returned from the virtual machine after accessing to the storage device through the relay device by the virtual machine. | 05-22-2014 |
Patent application number | Description | Published |
20080262299 | ELECTRONIC ENDOSCOPE APPARATUS - An electronic endoscope apparatus includes: an electronic endoscope having a power amplifier for transmitting by radio or by cable an image pickup signal obtained from an image sensor; and a low noise amplifier for receiving the image pickup signal transmitted by radio and by cable. The apparatus further includes: a processor unit for producing a video signal from the image pickup signal; and a cable connection detection circuit for changing gain of the power amplifier or gain of the low noise amplifier, upon detecting a connection of a cable between the electronic endoscope and the processor unit, for transmitting the image pickup signal by cable. | 10-23-2008 |
20090036743 | MEDICAL APPARATUS - A medical apparatus includes: a first illumination window through which a first illumination light from a first light source is irradiated to a subject; a second illumination window at different position than the first illumination window, through which a second illumination light from a second light source is irradiated to the subject; an electronic image pickup section which picks up subject images; an image creation section which generates observation images based on image pickup signals obtained by the electronic image pickup section; a light adjustment section which synchronously adjusts respective amounts of illumination lights irradiated from the first and second illumination windows; and a control unit which controls the light adjustment section or image creation section to maintain color tone of the observation image to a predetermined one according to increase/decrease of the illumination light amount from the first illumination window. | 02-05-2009 |
20090052185 | LIGHT SOURCE DEVICE - A light source device includes a light-condensing device that condenses an illumination light that is emitted from a light source lamp. The light-condensing device includes at least one lens, a lens holder in which a lens is fixedly provided, and a lens holding member. The lens holding member is a member for fixing a lens to the lens holder. The lens holding member causes at least one circumferential portion of the lens to protrude to the lens holder side, and causes the optical axis of the lens to match the optical axis of the illumination light. | 02-26-2009 |
20090059592 | LIGHT SOURCE DEVICE - A light source device includes a light source lamp, a rotary plate, a heat absorbing portion, and a filter mounting member. The light source lamp emits illumination light. The rotary plate includes multiple opening portions that are selectively disposed in the illumination light path of the light source lamp. A reflective filter that reflects light of a wavelength that acts a heat source in illumination light is provided in one of the multiple opening portions of the rotary plate. The heat absorbing portion absorbs heat included in reflected light reflected by the reflective filter in the opening portion. The filter mounting member disposes the reflective filter in the opening portion at a predetermined angle of inclination to the optical axis of the illumination light. By disposing the inclined reflective filter in the illumination light path, reflected light reflected by the reflective filter is reflected towards the heat absorbing portion. | 03-05-2009 |
20100002292 | LIGHT SOURCE DEVICE AND ENDOSCOPE APPARATUS USING THE SAME - A switching filter is provided in a light source device according to the present invention. The switching filter has a first dichroic filter which transmits illumination light in a first wavelength band from a lamp and a fluorescence observation filter which transmits at least illumination light in a second wavelength band and is rotatably provided such that the first dichroic filter and the fluorescence observation filter pass through an illumination light optical axis. An LED portion has a blue LED which emits illumination light in the first wavelength band toward the switching filter. A second dichroic filter capable of transmitting illumination light from the lamp and reflecting illumination light from the LED portion to a condenser lens is also arranged at the switching filter. | 01-07-2010 |
20140180004 | ENDOSCOPE APPARATUS - An endoscope apparatus includes a white LED that emits synthesized light of the excitation light and the fluorescence, a CCD that picks up an image of an observation part, a brightness detecting section that detects brightness of an optical image of the observation part based on an image pickup signal outputted by the CCD, a light adjusting circuit that adjusts driving time of the semiconductor light source, a color correction parameter deriving section that derives a first color correction parameter for correcting a gain of a color component signal related to the excitation light in a video signal, and a second color correction parameter for correcting a gain of a color component signal related to the fluorescence, and a color tone varying section that corrects the excitation-light-related gain with the first color correction parameter, and corrects fluorescence-related gain with the second color correction parameter. | 06-26-2014 |