| Patent application number | Description | Published |
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| 20080232815 | Dpsk Modulation-Demodulation Method, and Optical Communication Device and Optical Communication System Using the Same - In the optical communication device and the optical communication system using DPSK modulation whose cost is low, whose size is small and whose power consumption is low, the N:1 multiplexer | 09-25-2008 |
| 20090290876 | Light Receiver, Optical Communication System and Method - A receiver includes wavelength demultiplexer for demultiplexing a received WDM light into light signals at respective central frequencies thereof, delay interferometer for converting a light signal output from wavelength demultiplexer into an intensity signal, and light detector for converting an output signal from delay interferometer into an electric signal. The interval between interferential frequencies of delay interferometer is 2/(2n+1) times the interval between the central frequencies of the WDM light. Logic inverting circuit outputs the output signal from the light detector while non-inverting or inverting the logic level thereof depending on the received central frequency. | 11-26-2009 |
| 20100046965 | OPTICAL RECEPTION DEVICE AND OPTICAL RECEPTION METHOD - The present invention converts each of the optical differential signals from DPSK demodulator from an optical signal into an electrical signal by using optical-electrical signal converters. Thereafter, each electrical signal is subjected to amplification adjustment at an appropriate amplification factor by variable amplifier, and an appropriate delay amount is added to each electrical signal by variable delay line, and thereafter data discrimination is performed by discriminator. Since two differential signals after DPSK demodulation are subjected to amplitude and delay adjustments, the need for optical parts is obviated enabling the use of electric circuits which can be integrated. Thus, the cost of the optical reception device will be reduced. Moreover, the since electric signals whose phases and amplitudes are equalized are inputted to discriminator, erroneous determination of data at discriminator will be reduced. | 02-25-2010 |
| 20100215365 | OPTICAL MODULATOR AND OPTICAL COMMUNICATION SYSTEM - The optical modulator comprises an optical branching unit branching incident light into a first signal light and a second signal light; a first Mach-Zehnder modulator modulating the first signal light; a second Mach-Zehnder modulator modulating the second signal light; a phase shifter giving a fixed phase shift to the phase of the output light from the second Mach-Zehnder modulator; and an optical multiplexer multiplexing the output light from the first Mach-Zehnder modulator and the output light from the phase shifter. The phase shifter gives the phase shift so that the two input lights to the optical multiplexer have a phase difference of 60 degrees, and the first and second Mach-Zehnder modulators are driven by three-level signals. | 08-26-2010 |
| 20100329690 | OPTICAL COMMUNICATION SYSTEM, OPTICAL COMMUNICATION METHOD AND OPTICAL COMMUNICATION APPARATUS - Transmission-side communication apparatus | 12-30-2010 |
| 20110116790 | WAVELENGTH PATH COMMUNICATION NODE APPARATUS, WAVELENGTH PATH COMMUNICATION CONTROL METHOD, PROGRAM, AND RECORDING MEDIUM - A wavelength path communication node apparatus includes a wavelength path demultiplexer ( | 05-19-2011 |
| 20120020660 | METHOD OF AND SYSTEM FOR DETECTING SKEW BETWEEN PARALLEL SIGNALS - A method is provided for detecting the skew between parallel light signals generated from a serial data stream. The method can be used with polarization multiplexed signal, as well as with wavelength division multiplexed signals, spatial division multiplexed signals, phase modulated signals, or intensity modulated signals. The method can be used with direct detection schemes as well as with coherent detection schemes. The method is provided with: imprinting dips between a fixed number of transmitted symbols of the parallel signals; detecting an electrical signal related to the dips for each parallel signal; and comparing the electrical signals in delay. | 01-26-2012 |
| Patent application number | Description | Published |
|---|
| 20100169905 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND PROGRAM - An information processing apparatus includes a sight line detecting unit configured to detect a sight line of a viewer who is viewing content data and output sight line information which is a result of the detection, a viewing condition estimating unit configured to estimate a viewing condition of the viewer based on the output sight line information and visual attention information relating to the content data, and a content suggesting unit configured to make various suggestions with respect to the content data for the viewer based on the estimated viewing condition. | 07-01-2010 |
| 20110044504 | INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD AND PROGRAM - An information processing device, including: a three-dimensional information generating section for obtaining position and attitude of a moving camera or three-dimensional positions of feature points by successively receiving captured images from different viewpoints, and updating status data using observation information which includes tracking information of the feature points, the status data including three-dimensional positions of the feature points within the images and position and attitude information of the camera; and a submap generating section for generating submaps by dividing an area for which the three-dimensional position is to be calculated. The three-dimensional information generating section obtains position and attitude of the camera or three-dimensional positions of the feature points by generating status data corresponding to the submaps not including information about feature points outside of a submap area for each of the generated submaps and updating the generated status data corresponding to the submaps. | 02-24-2011 |
| 20110131064 | INSURANCE COMPANY TERMINAL, CONTROLLING COMPANY TERMINAL, INSURANCE MANAGEMENT METHOD AND INSURANCE MANAGEMENT SYSTEM - There is provided an insurance company terminal which includes a communication unit that performs communication with a sales company terminal, a storage unit that stores an amount of insurance money settled when a user dies, a user information update unit that acquires a price of an article or service purchased by the user as a purchase price from the sales company terminal via the communication unit and causes the storage unit to store the purchase price, and a settlement processing unit that subtracts the purchase price from the amount of the insurance money stored by the storage unit. | 06-02-2011 |
| 20110170742 | IMAGE PROCESSING DEVICE, OBJECT SELECTION METHOD AND PROGRAM - There is provided an image processing device including: a data storage unit that stores object identification data for identifying an object operable by a user and feature data indicating a feature of appearance of each object; an environment map storage unit that stores an environment map representing a position of one or more objects existing in a real space and generated based on an input image obtained by imaging the real space using an imaging device and the feature data stored in the data storage unit; and a selecting unit that selects at least one object recognized as being operable based on the object identification data, out of the objects included in the environment map stored in the environment map storage unit, as a candidate object being a possible operation target by a user. | 07-14-2011 |
| 20110187726 | IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, AND PROGRAM - There is provided an image processing device including: a data storage unit having feature data stored therein, the feature data indicating a feature of appearance of one or more physical objects; an environment map building unit for building an environment map based on an input image obtained by imaging a real space using an imaging device and the feature data stored in the data storage unit, the environment map representing a position of a physical object present in the real space; an information generating unit for generating animation data for displaying a status of communication via a communication interface on a screen, using the environment map built by the environment map building unit; and an image superimposing unit for generating an output image by superimposing an animation according to the animation data generated by the information generating unit on the input image. | 08-04-2011 |
| 20110187746 | Image Processing Device, Image Processing Method, and Program - There is provided an image processing device including: a data storage unit storing feature data indicating a feature of appearance of one or more physical objects; an environment map building unit for building an environment map based on an input image obtained by imaging a real space and the feature data, the environment map representing a position of a physical object present in the real space; a control unit for acquiring procedure data for a set of procedures of operation to be performed in the real space, the procedure data defining a correspondence between a direction for each procedure and position information designating a position at which the direction is to be displayed; and a superimposing unit for generating an output image by superimposing the direction for each procedure at a position in the input image determined based on the environment map and the position information, using the procedure data. | 08-04-2011 |
