Patent application number | Description | Published |
20100020840 | OPTICAL SEMICONDUCTOR DEVICE - An optical semiconductor device includes a semiconductor laser, a first optical waveguide, an optical coupler for branching light guided from the semiconductor laser through the first optical waveguide into two lights, two second optical waveguides, diffraction gratings provided individually on the two second optical waveguides, and an optical detector for detecting light guided through one of the two diffraction gratings, and the components are provided on the same substrate. The optical semiconductor device is configured such that reflection returning lights from the diffraction gratings side to the semiconductor laser side interfere with each other and thereby extinguish each other at the optical coupler and the phases of the reflection returning lights from the diffraction gratings side are displaced from each other by π at the optical coupler portion. | 01-28-2010 |
20100061414 | OPTICAL SEMICONDUCTOR DEVICE AND DRIVING METHOD THEREOF - Objects are achieved by an optical semiconductor device comprising: a structure | 03-11-2010 |
20100247031 | OPTICAL WAVEGUIDE DEVICE, ITS MANUFACTURE METHOD, LASER MODULE AND OPTICAL TRANSMISSION SYSTEM - A first optical waveguide of a convex shape is formed over a substrate. A second optical waveguide of a convex shape is formed over the substrate. A multimode interference waveguide of a convex shape is formed over the substrate for optically coupling the first optical waveguide to the second optical waveguide. Either side of the first optical waveguide is filled with a filling material, but either side of the second optical waveguide is not filled with the filling material. | 09-30-2010 |
20120243820 | OPTICAL SEMICONDUCTOR DEVICE - An optical demultiplexer has first and second input ports and first and second output ports. When optical signal is introduced into the first input port, intensity of optical signal output from the first output port is equal to that from the second output port. When optical signal is introduced into the second input port, intensity of optical signal output from the first output port is larger than that from the second output port. An optical multiplexer has third and fourth input ports and third and fourth output ports. A first optical waveguide connects between the first output port and the third input port, while a second optical waveguide connects between the second output port and the fourth input port. Voltages applied to a first modulation electrode and a second modulation electrode work to cause changes in the optical path lengths of the first optical waveguide and the second optical waveguide. | 09-27-2012 |
Patent application number | Description | Published |
20090079901 | Liquid crystal display device - Provided is a liquid crystal display device, including a liquid crystal display panel, a liquid crystal display protection panel protecting a display surface of the liquid crystal display panel, and a frame supporting the liquid crystal display protection panel on a periphery of a surface of the liquid crystal display protection panel, wherein a gap is installed between a edge surrounding the liquid crystal display protection panel and the frame. | 03-26-2009 |
20090079904 | Liquid crystal display device - Provided is a liquid crystal display device including a liquid crystal display panel, a liquid crystal display protection panel set above the liquid crystal display panel so as to protect a display surface of the liquid crystal display panel, the liquid crystal display protection panel being warped with its central portion being protruded, and a frame supporting the liquid crystal display panel and the liquid crystal display protection panel. | 03-26-2009 |
20110057053 | AROMA DIFFUSER - An aroma diffuser includes a housing to include an accommodating part that accommodates at least an aromatic chip, and a lid to be attached to the housing detachably and to close the accommodating part. The aromatic chip is provided for the lid. | 03-10-2011 |
20110228554 | ILLUMINATION UNIT, DEVICE, AND MANUFACTURING METHOD - An illumination unit including: a light source; a light guide-diffuser that guides and diffuses source light from the light source; a selective translucent unit that reflects external light or reduces the transmission of external light, while also transmitting light guided from the light guide-diffuser; and a presentation surface that presents the source light that has been guided from the light guide-diffuser and transmitted through the selective translucent unit. | 09-22-2011 |
20120057094 | Liquid crystal display device - Provided is a liquid crystal display device including a liquid crystal display panel, a liquid crystal display protection panel set above the liquid crystal display panel so as to protect a display surface of the liquid crystal display panel, the liquid crystal display protection panel being warped with its central portion being protruded, and a frame supporting the liquid crystal display panel and the liquid crystal display protection panel. | 03-08-2012 |
Patent application number | Description | Published |
20090060224 | SOUND PROCESSING APPARATUS, METHOD FOR CORRECTING PHASE DIFFERENCE, AND COMPUTER READABLE STORAGE MEDIUM - There is provided a sound processing apparatus for processing received sounds. A plurality of sound receiving units which are included in the apparatus output individually a sound signal corresponding to a received sound, then the sound signals in a time domain are converted into respective converted signal in a frequency domain, and a spectral ratio between the two converted signals is calculated for driving a phase correction value which corrects a phase of the sound signal. | 03-05-2009 |
20100008519 | Noise suppressing device, noise suppressing method and mobile phone - There is provided a noise suppressing device, for suppressing a noise component contained in a sound, including: at least two sound receiving parts receiving sounds from a plurality of directions containing a sound from a direction of a given sound source and converting the sounds to digital sound signals in a time domain, respectively; an estimating part acquiring both direction information on a direction of the given sound source and distance information on a distance from the given sound source based upon the digital sound signals converted by the sound receiving parts, and estimating a component value of a noise component contained in the signal by use of the direction information and the distance information; and a controlling part acquiring a control value of a suppression amount for controlling a range of a direction of the digital sound signals. | 01-14-2010 |
20100056227 | NOISE SUPPRESSING DEVICE, MOBILE PHONE, NOISE SUPPRESSING METHOD, AND RECORDING MEDIUM - A noise suppressing device receives sound signals through a plurality of sound-receiving units and suppresses noise components included in the input sound signals. The noise suppressing device includes a detecting unit which detects a usage pattern of the noise suppressing device from a plurality of usage patterns in which positional relationships of the plurality of sound-receiving units and/or positional relationships between the plurality of sound-receiving units and a target sound source are different from each other, a converting unit which converts using environment information used in a noise suppressing process to each of the sound signals inputted by the plurality of sound-receiving units into using environment information in accordance with a usage pattern detected by the detecting unit and a suppressing unit which performs the noise suppressing process using the using environment information converted by the converting unit to the sound signals. | 03-04-2010 |
20100128896 | SOUND RECEIVING DEVICE, DIRECTIONAL CHARACTERISTIC DERIVING METHOD, DIRECTIONAL CHARACTERISTIC DERIVING APPARATUS AND COMPUTER PROGRAM - A sound receiving device | 05-27-2010 |
20100191524 | NON-SPEECH SECTION DETECTING METHOD AND NON-SPEECH SECTION DETECTING DEVICE - A non-speech section detecting device generating a plurality of frames having a given time length on the basis of sound data obtained by sampling sound, and detecting a non-speech section having a frame not containing voice data based on speech uttered by a person, the device including: a calculating part calculating a bias of a spectrum obtained by converting sound data of each frame into components on a frequency axis; a judging part judging whether the bias is greater than or equal to a given threshold or alternatively smaller than or equal to a given threshold; a counting part counting the number of consecutive frames judged as having a bias greater than or equal to the threshold or alternatively smaller than or equal to the threshold; a count judging part judging whether the obtained number of consecutive frames is greater than or equal to a given value. | 07-29-2010 |
20100254541 | NOISE SUPPRESSING DEVICE, NOISE SUPPRESSING CONTROLLER, NOISE SUPPRESSING METHOD AND RECORDING MEDIUM - A noise suppressing device includes: a suppressing unit for suppressing noise by subtracting a noise component derived on the basis of a plurality of sound signals output by a sound receiving unit from the sound signals; a variation deriving unit for deriving a degree of variation by numerically quantizing the variation on the basis of a spectrum obtained by converting the plurality of sound signals to components on a frequency axis; a determining unit for determining that wind noise is occurring due to wind blowing against the sound receiving units when the degree of variation is equal to or greater than a value; and an adjusting unit for adjusting an amount of suppression according to the decision of the determining unit; wherein the suppressing unit suppresses noise by subtracting the noise component from the sound signals based on the amount of suppression adjusted by the adjusting unit. | 10-07-2010 |
20110158425 | MICROPHONE DIRECTIVITY CONTROL APPARATUS - A directivity control apparatus is capable of acquiring tilt information indicating a tilt angle of the directivity control apparatus; acquiring sound source direction information; storing mapping data indicating a relationship between the tilt angle and the direction; determining whether the sound information indicates a target sound; updating the mapping data based on the sound source direction information and the tilt information, if the sound information indicates the target sound; estimating a direction of sound responsive to the tilt information, based on the mapping data if the sound information doesn't indicate a target sound; and adjusting a directivity of a microphone based on the sound source direction information if the sound information indicates the target sound, or adjusting the directivity of the microphone based on the estimated direction if the sound information doesn't indicate the target sound. | 06-30-2011 |
20120035920 | NOISE ESTIMATION APPARATUS, NOISE ESTIMATION METHOD, AND NOISE ESTIMATION PROGRAM - A noise estimation apparatus includes a correlation calculator configured to calculate a correlation value of a spectrum between a plurality of frames in sound information obtained using one or more microphones, a power calculator configured to calculate a power value indicating a sound level of one target frame among the plurality of frames, an update determiner configured to determine an update degree indicating a degree to which the sound information of the target frame is to be reflected in a noise model stored in a storage, or determine whether or not the noise model is to be updated to another noise model, based on the power value of the target frame and the correlation value, and an updater configured to generate the other noise model based on a determined result, the sound information of the target frame, and the noise model. | 02-09-2012 |
20120166195 | STATE DETECTION DEVICE AND STATE DETECTING METHOD - A state detection device includes: a first model generation unit to generate a first specific speaker model obtained by modeling speech features of a specific speaker in an undepressed state; a second model generation unit to generate a second specific speaker model obtained by modeling speech features of the specific speaker in the depressed state; a likelihood calculation unit to calculate a first likelihood as a likelihood of the first specific speaker model with respect to input voice, and a second likelihood as a likelihood of the second specific speaker model with respect to the input voice; and a state determination unit to determine a state of the speaker of the input voice using the first likelihood and the second likelihood. | 06-28-2012 |
20120209598 | STATE DETECTING DEVICE AND STORAGE MEDIUM STORING A STATE DETECTING PROGRAM - A state detecting device includes an input unit that receives an input voice sound; an analyzer that calculates a feature parameter of each of plurality of frames extracted from the voice sound; a calculator that calculates the average of the feature parameters of the frames, determines a threshold on the basis of the average and statistical data representing relationships between other averages of other feature parameters obtained from a plurality of speakers and cumulative frequencies of the other feature parameters, and calculates an appearance frequency of a frame that is among the plurality of frames and whose feature parameter is larger than the threshold; a determining unit that determines, on the basis of the appearance frequency, a strained state of a vocal cord that has made the voice sound; and an output unit that outputs a result of the determination. | 08-16-2012 |