Seiko Epson Corporation

Seiko Epson Corporaition

Takayuki Kondo

Katsumi Mori

Hideaki Iwano

Tatsuya Asaka

Takeo Kaneko

Tsuyoshi Kaneko

Masayoshi Todorokihara

Daiki Tokushima

Takeo Kawase

Hitoshi Fukushima

Tatsuya Shimoda

Naoyuki Toyoda

Kazuhiko Amano

Teruo Takizawa

Takao Nishikawa

Tetsuo Nishida

Shojiro Kitamura

Hiroyuki Hara

Atsushi Takakuwa

Yuji Shinohara

Toshio Arimura

Hidemitsu Sorimachi

Yoshihiko Nimura

Atsushi Sato

An encoder includes a base portion, a rotation portion that is provided to be rotatable about a rotation axis with respect to the base portion, a mark that is disposed around the rotation axis on the rotation portion, an imaging element that is disposed in the base portion and images the marks, a storage portion that stores a reference image, and a determination portion that performs template matching on the mark imaged by the imaging element by using the reference image, so as to determine a rotation state of the rotation portion with respect to the base portion.

Encoder, robot, and printer

An encoder includes a base portion, a scale portion that is provided to be relatively rotatable with respect to the base portion, and has a plurality of marks, an imaging element that is disposed in the base portion, and images the marks, and an estimation portion that performs template matching on a captured image in the imaging element by using a reference image, in which the plurality of marks include a first mark and a second mark, and the estimation portion counts the number of pixels of the imaging element corresponding to a rotation angle of the scale portion with respect to the base portion until a position of the second mark is detected from detection of a position of the first mark, and performs calibration on the basis of the counted number of pixels and the rotation angle.

Template matching with an image captured by the first imaging element is performed to obtain a first movement amount in a circumferential direction of the first mark, template matching with an image captured by the second imaging element is performed to obtain a second movement amount in a circumferential direction of the second mark, and a rotation angle is calculated and output by using the first movement amount and the second movement amount.

Encoder unit, angle measuring method, and robot

An encoder includes a base portion, a scale portion that is provided to be relatively movable or rotatable with respect to the base portion, and has three or more marks which are different from each other, an imaging element that is disposed in the base portion, and images the marks, and an estimation portion that selects at least one reference image from among three or more reference images, performs template matching on a captured image in the imaging element by using the reference image, so as to detect positions of the marks, and estimates a movement state or a rotation state of the scale portion with respect to the base portion, in which the estimation portion predicts a reference image to be used for post-template matching on the basis of a result of pre-template matching, and performs the post-template matching by using the predicted reference image.

A robot includes a base, a robot arm provided to be turnable around a turning axis with respect to the base, and an encoder including a mark configured to turn around the turning axis according to the turning of the robot arm and an imaging element configured to image the mark, the encoder detecting a state of the turning of the robot arm using a signal output from the imaging element. The encoder includes a telecentric optical system disposed between the imaging element and the mark.

Robot and printer including a telecentric optical system between an imaging element and a mark of an encoder

A robot includes a first member, a second member that is provided to be turnable about a turning axis with respect to the first member, marks that are disposed around the turning axis on a surface of the second member, and a mark detection portion that is disposed in the first member and detects the marks.

System for determining robot position having an imaging element to image the mark on a rotatable arm

A frequency measuring device according to an embodiment of the invention includes a first resonator provided with a first adsorption film, a second resonator provided with a second adsorption film, a first oscillation circuit which is connected to the first resonator and is provided with a first frequency regulator that can regulate the frequency of a first oscillation signal and output the first oscillation signal, a second oscillation circuit which is connected to the second resonator and is provided with a second frequency regulator that can regulate the frequency of a second oscillation signal and output the second oscillation signal, a measuring circuit which can measure the frequencies of the first oscillation signal and the second oscillation signal, and a control circuit which can control the first frequency regulator and the second frequency regulator.

Frequency measuring device and odor sensor and electronic equipment which are provided with the frequency measuring device

An electric circuit includes: a reference signal generation circuit that generates a reference signal based on a first oscillation signal that is an oscillation signal of a first oscillation circuit that vibrates a first vibrator; and a counter circuit that counts a second oscillation signal that is an oscillation signal of a second oscillation circuit that vibrates a second vibrator based on the reference signal, and outputs a count signal, wherein the count signal is a change of the count value in the second oscillation signal.

Electric circuit, sensor system equipped with the electric circuit, and sensor device equipped with the electric circuit

An oscillation circuit includes: a first oscillation circuit and a second oscillation circuit, wherein the first oscillation circuit includes a first input side electrode electrically connected to a first oscillator and a first output side electrode electrically connected to the first oscillator, and the second oscillation circuit includes a second input side electrode electrically connected to a second oscillator and a second output side electrode electrically connected to the second oscillator, wherein the distance between the first output side electrode and the second input side electrode is greater than the distance between the first input side electrode and the first output side electrode.

Oscillator circuit, oscillator circuit group, electronic apparatus, and layout method for oscillation circuit group

A oscillator include: a vibrator that vibrates in a thickness shear vibration mode; a first adsorption film formed in a first region in a first surface of the vibrator; a second adsorption film formed in a second region in a second surface of the vibrator opposing to the first surface; and a substrate with a surface on which the vibrator is erected, wherein the vibrator contacts the substrate in a third surface that is different from the first surface and the second surface.

Oscillator, oscillator array and an electronic apparatus

A display, comprising: a planar display section; a pixel space provided next to a side adjacent to one surface of the display section and encapsulating a plurality of kinds of colorants, each kind having a different color; an accumulation section provided in the pixel space and accumulating the colorants; a separation system that separates a specific kind of colorant from the accumulated colorants in the accumulation section; a transfer system that selects at least one kind of colorant from the separated colorants and transfers this colorant to the side adjacent to the display section of the pixel space. The separation system performs separation utilizing the magnitude of a dielectrophoretic force generated in each colorant upon receipt of an alternating electric field of a specific frequency applied by this system, the magnitude varying depending on the kind of the colorant. A color of at least the one kind of colorant transferred by the transfer system is displayed at the display section.

Display, display method, and electronic device

Aspects of the invention can be an inexpensive biosensor capable of measuring a number of samples in a short time, and suitable for only one-time use (expendable). The biosensor according to the invention can include a light transmissive substrate, a probe fixing region provided on one face of the light transmissive substrate, a light emitting element provided on the other face of the substrate that irradiates the probe fixing region from the back side thereof, and a light receiving element provided on the other face of the substrate that detects the light intensity of the reflected light from the back side of the probe fixing region. Thereby, a biosensor formed in one substrate can be obtained.

Biosensor and method of manufacturing biosensor

A semiconductor sensor includes: a semiconductor substrate; a plurality of piezoelectric thin films layered on the semiconductor substrate, the plurality of piezoelectric thin films including at least a pair of the piezoelectric thin films layered above and below; a pair of electrodes that are formed at an interface of at least the pair of the piezoelectric thin films layered above and below and excite surface acoustic waves; a thin film directly under a lowest-layer piezoelectric film of the piezoelectric thin films; a metal thin film that is formed at an interface of the lowest-layer piezoelectric thin film and the thin film, and facilitate a growth of a ridge-and-valley portion on a surface of an uppermost-layer piezoelectric thin film of the piezoelectric thin films; and a sensitive film for molecular adsorption formed on at least the ridge-and-valley portion on the uppermost-layer piezoelectric thin film.

Semiconductor sensor and method for manufacturing the same

An ink cartridge filled with an ink added with an infrared absorption material with a function of absorbing an infrared ray to distinguish the ink from another ink of a same color, the ink cartridge used in a loaded state where the ink cartridge is loaded into a printing apparatus for performing printing, the ink cartridge includes an ink supplying system including a storage portion for storing the ink, an outlet for supplying the ink to the printing apparatus in the loaded state, and a flow path for guiding the ink from the storage portion to the outlet, a light emitter, a sensor including a light receiver disposed in opposition to the light emitter with the ink supplying system intervened therebetween, the light receiver for receiving transmitted light resulting from transmission of emitted light from the light emitter through the ink supplying system, and an ink cartridge-side terminal electrically connected to the sensor, coming in contact with an apparatus-side terminal provided to the printing apparatus in the loaded state, in which the emitted light has a wavelength in an infrared range.

Growing community of inventors

Suwa, Japan

Takayuki Kondo