Funai Electric Company Ltd.

Funai Electric Advanced Applied Technology Research Institute Inc.

Matsushita Electric Industrial Co., Ltd.

Kyoto University

Taiwan Semiconductor Manufacturing Comp. Ltd.

Onpa Technologies Inc.

Ryusuke Horibe

Fuminori Tanaka

Takeshi Inoda

Toshimi Fukuoka

Rikuo Takano

Masatoshi Ono

Kiyoshi Sugiyama

Manabu Murayama

Shigeo Maeda

Yuichiro Masuda

Shingo Setono

Tomohisa Hirai

Atsushi Mushimoto

Hideki Choji

Toshiyuki Shimada

Fumitoshi Matsuno

Naoki Inoue

Shuji Umeda

Hiromichi Ishibashi

Yasuaki Edahiro

Hiroyuki Miyachi

Shin-ichi Kadowaki

Mitsurou Moriya

Masahiro Honjo

Hideki Hayashi

Yasuo Fujikawa

Yasuki Matsumoto

Masaharu Imura

Kazuhiro Aoki

Akira Funatsu

Michitomo Shibutani

Kazutoshi Aida

Shinichi Kawakami

Motoyuki Kobayashi

Youichi Kanekami

Hiromiti Ishibashi

Tomio Ishida

Syuzi Umeda

Tomohiro Taniguchi

Hideki Chouji

Toru Takahashi

Hiroshi Okuno

Ono Masatoshi

An oscillation device includes an oscillator, an oscillation detector that detects an oscillation of the oscillator and outputs an oscillation detection signal, a phase shift controller that generates a phase shift signal to provide the drive signal as positive feedback to the oscillator, and an amplitude detector that detects an amplitude of the oscillation detection signal and outputs an oscillation amplitude signal. The oscillator is controlled based on the oscillation amplitude signal and the phase shift signal.

Oscillation device, scanning-type scanner device, information terminal, phase-shift amount adjustment device, and phase-shift amount adjustment method

A laser rangefinder includes a light source, a scanning mirror that scans laser light emitted from the light source by oscillating about an axis of oscillation J extending in a predetermined direction, a first lens that is disposed on an optical path of reflected light from a target object and condenses the reflected light onto the scanning mirror, a second lens that is disposed on an optical path of and condenses reflected light from the scanning mirror, and a photodetector that receives the reflected light condensed by the second lens. The first lens and the second lens are disposed in positions other than positions on an optical path of the laser light between a point of emission from the light source and a point of exit from the laser rangefinder.

Laser rangefinder

A laser scanner includes a light source, a scanning mirror, and a first photodetector. The scanning mirror includes: a first reflective surface reflects the laser light from the light source; and a second reflective surface that reflects, toward the photodetector, the laser light reflected from the target object. The first reflective surface and at least part of the second reflective surface are disposed at mutually different angles. When a first optical axis passing through the target object and the first reflective surface is parallel with a second optical axis passing through the target object and the second reflective surface, a third optical axis passing through the first reflective surface and the light source and a fourth optical axis passing through the second reflective surface and the photodetector are at a predetermined angle relative to one another.

Laser scanner

A laser scanner includes: a light source; a scanning mirror that scans laser light emitted from the light source, toward a target object by oscillating about axis C; a photodetector that generates a photodetection signal upon receiving the laser light reflected from the target object; a controller that controls emission of the laser light by the light source, and that performs sampling on the photodetection signal; and a detector that detects an amount of displacement of the scanning mirror, and calculates a resonant frequency of the scanning mirror based on the amount of displacement detected. The controller determines a time at which the laser light is emitted from the light source and a time at which sampling is performed on the photodetection signal, based on the resonant frequency calculated.

A laser rangefinder includes: a MEMS mirror that changes a traveling direction of laser light; a first photodetector that reflects a portion of the laser light directed in a predetermined direction by the MEMS mirror and receives another portion of the laser light; a second photodetector that receives first reflected light that is reflection of the laser light from a target object outside an enclosure and second reflected light that is reflection of the portion of the laser light from the first photodetector; and a signal processor that calculates a distance from the laser rangefinder to the target object by subtracting, from a first distance from the laser diode to the target object calculated using the first reflected light, a second distance from the laser diode to the first photodetector calculated using the second reflected light, and calculates a direction of the target object with respect to the laser rangefinder.

Laser rangefinder and method of measuring distance and direction

An electronic apparatus includes a light source that outputs a laser light; a scanning unit that scans the laser light; a reflective member having a reflective surface that reflects the laser light; a light-receiving unit that receives a first reflected light reflected by the reflective member; and a signal processing unit that calculates a distance from the light source to the reflective surface using the first reflected light and determines a direction in which the laser light is output using the distance.

Electronic apparatus and method for measuring direction of output laser light

An oscillation device includes an oscillator, an oscillation detection unit that detects oscillation of the oscillator and outputs an oscillation detection signal, and a drive unit that generates a drive signal in keeping with the oscillation detection signal and outputs the drive signal to the oscillator. The drive unit includes a phase shift unit that shifts the phase to provide the drive signal as positive feedback to the oscillator. The phase shift unit includes a disturbance generating unit that outputs the periodic signal, a fluctuation unit that causes the amount of phase shift to fluctuate based on the periodic signal, a drive amplitude detection unit that detects the amplitude of the drive signal and outputs a drive amplitude signal, a product detection unit that outputs a detection signal after performing product detection on the drive amplitude signal based on the periodic signal, and an adjustment unit that adjusts the phase-shift amount based on the detection signal.

A scanner apparatus includes: a scanner having a mirror that is driven into resonance in a first direction; a scanner holder holding the scanner and rotatable about an axis extending in a direction parallel to the first direction; and a driver that oscillates the scanner holder, and the scanner holder includes: a first holding portion holding the scanner; a second holding portion connected to the first holding portion and holding the driver; a connecting portion connected to the second holding portion; and an elastic portion connected to the connecting portion and having elasticity.

Scanner apparatus

A microphone unit includes first and second diaphragms; a substrate on a top surface of which are installed the first and second diaphragms; and a cover disposed covering the first and second diaphragms, the cover joined to an outside edge of the substrate and forming an internal space. There are formed in the substrate first and second openings that are formed respectively in the top and bottom surfaces of the substrate, and an internal sound path communicating from the first opening to the second opening. The first diaphragm is disposed on the substrate so as to cover and hide the first opening. The second diaphragm is disposed so as to seal off a partial region away from the first opening of the top surface of the substrate. A third opening is formed in the cover, and the internal space communicates to an outside space via the third opening.

Microphone unit, and sound input device provided with 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.

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

A microphone unit () is provided with an electro-acoustic transducer () which converts acoustic signals into electric signals on the basis of the oscillation of a diaphragm (), and a housing () which contains the electro-acoustic transducer (). The housing () is provided with: a first sound conduction space (SP) that guides sound waves from the outside to one side of the diaphragm () via at least one first aperture () formed on the exterior of the housing (); and a second sound conduction space (SP) that guides sound waves from the outside to the other side of the diaphragm () via at least one second aperture () formed on the exterior of the housing (). The total square area of at least one first aperture () and the total square area of at least one second aperture () are not the same.

Microphone unit

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 () comprises a first vibrating part (), a second vibrating part (), and a housing () for accommodating the first vibrating part () and the second vibrating part (), the housing being provided with a first sound hole (), a second sound hole (), and a third sound hole (). The housing () is provided with a first sound path () for transmitting sound pressure inputted from the first sound hole () to one surface () of a first diaphragm () and to one surface () of a second diaphragm (), a second sound path () for transmitting sound pressure inputted from the second sound hole () to the other surface () of the first diaphragm (), and a third sound path () for transmitting sound pressure inputted from the third sound hole () to the other surface () of the second diaphragm ().

Microphone unit and voice input device comprising same

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.

Growing community of inventors

Daito, Japan

Ryusuke Horibe