| Patent application number | Description | Published |
|---|
| 20080278789 | VARIABLE SHAPE MIRROR AND OPTICAL PICKUP DEVICE - In a variable shape mirror including a base substrate; a mirror with a mirror surface; a fixed part, arranged on the base substrate, for fixing the mirror and the base substrate; and an actuator using a piezoelectric ceramics arranged between the base substrate and the mirror; an initial voltage of the actuator is a negative voltage. The initial voltage differs for each actuator; and is larger than or equal to a voltage at which a displacement of the actuator becomes minimum and smaller than zero voltage. The negative initial voltage is a bias voltage, and a voltage stroke is performed while applying the bias voltage. | 11-13-2008 |
| 20080291559 | Variable shape mirror and manufacturing method for variable shape mirror - A variable shape mirror includes a support substrate provided with a conductive bonding portion that is divided into two areas bonded to a lamination type piezoelectric actuator. A bonding surface of the piezoelectric actuator is provided with a first metal film that is divided into a first area and a second area that are not connected to each other electrically. Side faces of the piezoelectric actuator are provided with a second metal film that connects a first common electrode to the first area electrically or connects a second common electrode to the second area electrically. The piezoelectric actuator is disposed on the bonding portion so that the individual areas of the first metal film are connected electrically to the different areas of the bonding portion, respectively. | 11-27-2008 |
| 20090015952 | Variable-shape mirror and optical pickup device therewith - In a variable-shape mirror provided with a support base, a mirror portion that is disposed to face the support base and that has, on a side thereof facing away from the support base, a mirror surface which is irradiated with a light beam, and piezoelectric elements that are sandwiched between the support base and the mirror portion and that vary the shape of the mirror surface, the piezoelectric elements are bonded, by means of a thin layer of metal, to at least one of the support base and the mirror portion by the application of heat and pressure. | 01-15-2009 |
| 20090136059 | MICROPHONE SYSTEM, SOUND INPUT APPARATUS AND METHOD FOR MANUFACTURING THE SAME - A microphone system, includes: a housing, adapted to be placed in a reference position relative to a sound source; a first microphone, configured to receive sound from the sound source at a first position within the housing; a second microphone, configured to receive sound from the sound source at a second position within the housing; and a differential signal generator, wherein: the first and second positions are arranged on a first line; and the first line perpendicularly intersects a second line that is extended from the sound source at a third position which is not between the first and second positions, and obliquely intersects a third line that is extended from the sound source at a fourth position which is between the first and second positions, when the housing is placed at the reference position. | 05-28-2009 |
| 20090147968 | SOUND INPUT DEVICE - A sound input device includes a differential microphone, configured to receive sound including noise, and generate a first signal in accordance with the sound; a detector, configured to detect the noise, and generate a second signal in accordance with the detected noise; and a controller, configured to control at least one of suppression of high-frequency components of the first signal and changing of a frequency band to be suppressed of the first signal based on the second signal. | 06-11-2009 |
| 20090161886 | MICROPHONE UNIT AND SOUND INPUT APPARATUS - A microphone unit includes: a partition member, including a vibration film configured to be vibrated by sound; a housing, defining an inner space, and formed with a first opening and a second opening, the inner space being divided into a first space and a second space by the partition member, the first space adapted to be communicated with an outer space via the first opening, and the second space adapted to be communicated with the outer space via the second opening; and a shutter, configured to close one of the first and second openings; and an amplifier, configured to: amplify an electric signal at a first gain when the shutter closes the one of the first and second openings; and amplify the electric signal at a second gain that is larger than the first gain when first and second openings are opened. | 06-25-2009 |
| 20090185696 | SOUND SIGNAL TRANSMITTER-RECEIVER - A sound signal transmitter-receiver includes a differential microphone for receiving sounds respectively at first and second points to convert the receiving sounds into a transmission sound signal; a transmission-reception unit for receiving an incoming signal as a reception sound signal; an addition unit for adding the reception sound signal from the transmission-reception unit and the transmission sound signal to produce an addition signal; and a speaker outputting sound based on the addition signal. | 07-23-2009 |
| 20090274324 | MICROPHONE UNIT AND METHOD OF MANUFACTURING THE SAME - A microphone unit includes a substrate. The substrate includes a first face formed with a first recess, a second face opposite to the first face, and a through hole communicating the second face to a bottom part of the first recess. A diaphragm unit includes a diaphragm, and at least a part of which is disposed in the first recess so that the diaphragm opposes the through hole. | 11-05-2009 |
| 20090290740 | MICROPHONE UNIT AND METHOD OF MANUFACTURING THE SAME - A microphone unit includes a microphone substrate. A plurality of diaphragm units are disposed on the microphone substrate. Each of the diaphragm units includes a diaphragm. A plurality of partition walls are disposed on the microphone substrate. Each of the partition walls surrounds the diaphragm so as to define a first area. A signal processor is disposed at a second area outside the first area and is configured to process signals output from the diaphragm units. | 11-26-2009 |
| 20090296972 | VOICE SOUND INPUT APPARATUS AND VOICE SOUND CONFERENCE SYSTEM - A voice sound input apparatus, adapted to be inputted a sound and output sound data, includes: a first microphone, related to a first sound hole; a second microphone, related to a second sound hole; a signal processing unit, configured to perform a signal processing; and a wireless transmission unit, configured to transmit the sound data based on an output signal of the signal processing unit, wherein a distance between the first sound hole and the second sound hole is a distance that a phase component of a sound strength ratio is lower than or equal to 0 dB, the sound strength ratio being a ratio between a strength of a sound component contained in differential sound pressure of sounds entered to the first sound hole and the second sound hole and a strength of sound pressure of the sound entered to the first sound hole. | 12-03-2009 |
| 20090310811 | VOICE SOUND INPUT APPARATUS - A voice sound input apparatus, adapted to be inputted a sound and configured to output sound data, includes: a display unit; a first microphone, related to a first sound hole; a second microphone, related to a second sound hole; a signal processing unit; and a microphone holding unit, formed with the first sound hole, and adapted to extend toward a sound source predicted position; wherein a distance between the first sound hole and the second sound hole is a distance that a phase component of a sound strength ratio is lower than or equal to 0 dB, the sound strength ratio being a ratio between a strength of a sound component contained in differential sound pressure of sounds entered to the first sound hole and the second sound hole and a strength of sound pressure of the sound entered to the first sound hole. | 12-17-2009 |
| 20100142742 | MICROPHONE UNIT - A microphone unit includes: a housing; a diaphragm which is disposed in the inside of the housing; and an electric circuit portion which processes an electric signal that is generated based on a vibration of the diaphragm. In the housing, a first sound guide space which guides a sound outside the housing to a first surface of the diaphragm via a first sound hole and a second sound guide space which guides a sound outside the housing to a second surface, that is, an opposite surface of the diaphragm via a second sound hole are formed. The electric circuit portion is disposed in either one of the first sound guide space and the second sound guide space; and an acoustic resistance portion which adjusts at least one of a frequency characteristic of the first sound guide space and a frequency characteristic of the second sound guide space is formed. | 06-10-2010 |
| 20100142743 | VOICE INPUT APPARATUS - A microphone unit is disposed in the inside of a first housing of a voice input apparatus. The microphone unit includes: a second housing; a diaphragm which is disposed in the inside of the second housing; and an electric circuit portion which processes an electric signal that is generated based on a vibration of the diaphragm. In the voice input apparatus, a first sound guide space which guides a sound outside the first housing to a first surface of the diaphragm and a second sound guide space which guides a sound outside the first housing to a second surface of the diaphragm are formed. The electric circuit portion is disposed in either one of the first sound guide space and the second sound guide space; and an acoustic resistance portion which adjusts at least one of a frequency characteristic of the first sound guide space and a frequency characteristic of the second sound guide space is formed. | 06-10-2010 |
| 20100202649 | Microphone Unit - A microphone unit is provided with an electroacoustic conversion portion that includes a diaphragm vibrated by sound pressure and that converts the sound pressure into electrical signals and a board on which the electroacoustic conversion portion is mounted. In the board, there are provided a board opening portion that is formed to face the diaphragm and locating walls that come in contact with the electroacoustic conversion portion to locate the electroacoustic conversion portion. | 08-12-2010 |
| 20100260346 | Voice Input Device, Method of Producing the Same, and Information Processing System - A voice input device includes a first microphone ( | 10-14-2010 |
| 20100266146 | Integrated Circuit Device, Voice Input Device and Information Processing System - An integrated circuit device includes a circuit board ( | 10-21-2010 |
| 20100280825 | Voice Input Device, Method of Producing the Same, and Information Processing System - A voice input device includes a first microphone ( | 11-04-2010 |
| 20110158449 | Microphone Unit - A microphone unit ( | 06-30-2011 |
| 20110158450 | MICROPHONE UNIT - To provide a downsized microphone unit in which a differential microphone is densely mounted thereon. | 06-30-2011 |
| 20110158453 | MICROPHONE UNIT - The microphone unit of the present invention comprises an electro-acoustic converter for converting an acoustic signal to an electric signal, the converter having a diaphragm displaced by acoustic pressure; and a housing provided with an accommodation space for accommodating the electro-acoustic converter, and with an acoustic path for guiding outside sound from an acoustic hole to the diaphragm. An external-connection electrode having the same function is formed on a first external surface belonging to the housing and having the acoustic hole, and on a second external surface on the side opposite the first external surface of the housing. | 06-30-2011 |
| 20110158454 | VOICE INPUT DEVICE, METHOD FOR MANUFACTURING THE SAME, AND INFORMATION PROCESSING SYSTEM - A voice input device, a method for manufacturing the same, and an information processing system are provided. The voice input device has a function of removing a noise component and includes a first microphone | 06-30-2011 |
| 20110164760 | SOUND SOURCE TRACKING DEVICE - The sound source tracking device of the present invention comprises a plurality of differential microphones having bidirectionality, and a support member adapted to support the plurality of differential microphones such that the plurality of differential microphones are disposed in an array within a given plane. The plurality of differential microphones are supported on the support member such that their principal axes of directionality are approximately orthogonal to the given plane. | 07-07-2011 |
