Funai Electric Company Ltd.

Funai Electric Advanced Applied Technology Research Institute Inc.

Sony Corporation

National Institute of Advanced Industrial Science and Technology

Tokai University Educational System

Onpa Technologies Inc.

Toshimi Fukuoka

Ryusuke Horibe

Fuminori Tanaka

Takeshi Inoda

Masatoshi Ono

Rikuo Takano

Kiyoshi Sugiyama

Shigeo Maeda

Hideki Choji

Tetsuya Higuchi

Masao Suzuki

Wu Weng

Tetsuo Shimizu

Yutaka Hayashi

Yuichiro Masuda

Tsuyoshi Takahashi

Shigeo Furuta

Hideki Matsuzaka

Yasuhisa Naitou

Hiroshi Suga

Touru Sumiya

Kumaragurubaran Somu

Akira Shirakura

Hiroshi Tokunaga

Yuji Yakura

Norikazu Iwasaki

Koichi Kawasumi

Makoto Omodani

Hideki Chouji

Yuichirou Ikemoto

Takashi Mori

Hisashi Andoh

Ono Masatoshi

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.

Microphone unit having a plurality of diaphragms and a signal processing unit

In a drive method for a memory element that includes an insulating substrate, a first electrode and a second electrode provided on the insulating substrate, and an inter-electrode gap portion provided between the first electrode and the second electrode and having a gap of the order of nanometers where a phenomenon of a change in resistance value between the first and second electrodes occurs, and that can perform a transition from a predetermined low-resistance state to a predetermined high-resistance state and a transition from the high-resistance state to the low-resistance state, a current pulse is applied to the memory element by a constant current circuit upon the transition from the high-resistance state to the low-resistance state.

Drive method for memory element and storage device using memory element

A memory element includes an insulating substrate; a first electrode and a second electrode on the insulating substrate; and an inter-electrode gap portion that causes a change in resistance value between the first and second electrodes. Applied to the memory element from a pulse generating source is a first voltage pulse for shifting from a predetermined low-resistance state to a predetermined high-resistance state, and a second voltage pulse for shifting from the high-resistance state to the low-resistance state through a series-connected resistor, by which current flowing to the memory element after the change to a low resistance value is reduced. When shifting from the high to the low-resistance state, a voltage pulse is applied such that an electrical resistance between the pulse generating source and the memory element becomes higher than the electrical resistance shifting from the low to the high-resistance state.

Drive method for memory element, and storage device using memory element

An integrated circuit device includes a circuit board ('), the circuit board including a first diaphragm (-) that forms a first microphone, a second diaphragm (-) that forms a second microphone, and a differential signal generation circuit () that receives a first voltage signal obtained by the first microphone and a second voltage signal obtained by the second microphone, and generates a differential signal that indicates a difference between the first voltage signal and the second voltage signal.

Integrated circuit device, voice input device and information processing system

A microphone unit includes a case; a diaphragm arranged inside the case; and an electric circuit unit that processes an electric signal generated in accordance with vibration of the diaphragm. The case has a first sound introducing space that introduces a sound from outside of the case to a first surface of the diaphragm via a first sound hole; and a second sound introducing space that introduces a sound from outside of the case to a second diaphragm, via a second sound hole. A resonance frequency of the diaphragm is set in the range of &#xb1;4 kHz based on the resonance frequency of at least one of the first sound introducing space and the second sound introducing space.

Microphone unit

There is provided an integrated circuit device having a wiring board', the wiring board&#x2032; including: a first vibrating membrane-which forms a first microphone; a second vibrating membrane-which forms a second microphone; and a differential signal generating circuitwhich receives a first voltage signal obtained in the first microphone and a second voltage signal obtained in the second microphone and generates a differential signal indicating a difference between the first and second voltage signals, and a voice input device and an information processing system including the same. Accordingly, it is possible to realize a voice input element having a small size and a noise removal function with high accuracy.

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-that includes a first vibrating membrane, a second microphone-that includes a second vibrating membrane, and a differential signal generation sectionthat generates a differential signal between a first voltage signal and a second voltage signal. The first and second vibrating membranes are disposed so that a noise intensity ratio is smaller than an input voice intensity ratio that represents the ratio to intensity of an input voice component. The differential signal generation sectionincludes a delay sectionand a differential signal output sectionthat generates and outputs a differential signal with respect to a signal to which a delay is applied by the delay section.

Voice input device, method for manufacturing the same, and information processing system

A voice input device includes a first microphone (-) that includes a first diaphragm, a second microphone (-) that includes a second diaphragm, and a differential signal generation section () that generates a differential signal that indicates a difference between a first voltage signal and a second voltage signal, the first diaphragm and the second diaphragm being disposed so that a noise intensity ratio is smaller than an input voice intensity ratio (input voice component intensity ratio), and the differential signal generation section () including a gain section () that amplifies the first voltage signal by a predetermined gain, and a differential signal output section () that generates and outputs a differential signal that indicates a difference between the first voltage signal amplified by the gain section and the second voltage signal.

Voice input device, method of producing the same, and information processing system

To provide a downsized microphone unit in which a differential microphone is densely mounted thereon. The microphone unit has a cover portionand a microphone substrate, in which a first substrate internal spaceis communicated with a cover portion internal spacevia a first substrate openingand a cover portion opening, and is communicated with the outside via a second substrate opening, a second substrate internal spaceis communicated with the cover portion internal spacevia a third substrate openingand a cover portion opening, and is communicated with the outside via a fourth substrate opening, a partition portioncovers a communication aperture between the first substrate openingand the cover portion opening, and a diaphragmcovers at least a part of the communication aperture between the first substrate openingand the cover portion opening

A voice input device includes a first microphone (-) that includes a first diaphragm, a second microphone (-) that includes a second diaphragm, and a differential signal generation section () that generates a differential signal that indicates a difference between a first voltage signal and a second voltage signal, the first diaphragm and the second diaphragm being disposed so that a noise intensity ratio is smaller than an input voice intensity ratio (input voice component intensity ratio), and the differential signal generation section () including a delay section (), and a differential signal output section () that generates and outputs a differential signal based on a signal delayed by the delay section.

A microphone unitof the present invention includes a casehaving an internal space, a partition memberwhich is provided in the case, and at least partially composed of a vibrating membrane, that splits the internal space into a first spaceand a second space, and an electrical signal output circuitthat outputs an electrical signal on the basis of vibration of the vibrating membrane. A first through holethrough which the first spaceand an external space of the case are communicated with each other, and a second through holethrough which the second spaceand the external space of the case are communicated with each other are formed in the case. In accordance with the present invention, it is possible to provide a high-quality microphone unit whose outer shape is small and which is capable of performing thorough noise cancellation.

Microphone unit, close-talking type speech input device, information processing system, and method for manufacturing microphone unit

Provided is a microphone unit having flat frequency characteristics. A microphone unit includes a casing, a first substrate, a second substrate, a vibrating unit, a diaphragm, an ASIC, and a dummy component. The dummy component is attached to the substrate to be located below an opening.

Microphone unit and mobile phone provided with the same

Disclosed is an electrochromic display device comprising: a first and a second substrates; a first and a second electrodes; and an electrochromic composition layer, wherein the device is of a passive matrix drive where the a display and an erasion are performed by an energization in reverse directions between the electrodes, the first and the second electrodes respectively comprise a plurality of electrodes, a pixel is formed where the electrodes are in a grade separated crossing, and the display is performed by voltage application processing where: (i) the first electrode is set as negative, and the second electrode is set as positive, to apply a voltage of a first potential difference, immediately followed by (ii) the first electrode being set as positive, and the second electrode being set as negative, to apply a voltage of a second potential difference equal to or more than the first potential difference.

Electrochromic display device

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.

A microphone unit includes: a housing which has an inner space; a partition member which is provided in the housing and divides the inner space into a first space and a second space, the partition member being at least partially formed of a diaphragm; and an electrical signal output circuit which outputs an electrical signal based on vibrations of the diaphragm. In the housing, a first through-hole through which the first space communicates with an outer space of the housing and a second through-hole through which the second space communicates with the outer space are formed.

Growing community of inventors

Yokohama, Japan

Toshimi Fukuoka