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出願の表示

1. US20190265031 - Signal processing device, sensor device, and signal processing method

官庁
アメリカ合衆国
出願番号 16344812
出願日 15.09.2017
公開番号 20190265031
公開日 29.08.2019
特許番号 10458789
特許付与日 29.10.2019
公報種別 B2
IPC
G01C 3/08
G物理学
01測定;試験
C距離,水準または方位の測定;測量;航行;ジャイロ計器;写真計量または映像計量
3視準線上の距離測定;光学的距離計
02細部
06最終指示値を得るための電気的手段の使用
08電気的輻射検出器の使用
G01B 11/10
G物理学
01測定;試験
B長さ,厚さまたは同種の直線寸法の測定;角度の測定;面積の測定;表面または輪郭の不規則性の測定
11光学的手段の使用によって特徴づけられた測定装置
08直径測定用
10移動体の
G10L 21/0208
G物理学
10楽器;音響
L音声の分析または合成;音声認識;音声処理;音声または音響の符号化と復号化
21他の可聴信号,または不可聴信号への音声信号変換処理,例.特性や明瞭性を修正するための視覚,触覚
02音声の強調,例.雑音低減またはエコー除去
0208雑音除去
G01B 11/02
G物理学
01測定;試験
B長さ,厚さまたは同種の直線寸法の測定;角度の測定;面積の測定;表面または輪郭の不規則性の測定
11光学的手段の使用によって特徴づけられた測定装置
02長さ,幅または厚み測定用
G01S 17/00
G物理学
01測定;試験
S無線による方位測定;無線による航行;電波の使用による距離または速度の決定;電波の反射または再輻射を用いる位置測定または存在探知;その他の波を用いる類似の装置
17電波以外の電磁波の反射または再放射を使用する方式,例.ライダー方式
CPC
G01B 11/026
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11Measuring arrangements characterised by the use of optical means
02for measuring length, width or thickness
026by measuring distance between sensor and object
G01C 3/08
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
3Measuring distances in line of sight; Optical rangefinders
02Details
06Use of electric means to obtain final indication
08Use of electric radiation detectors
G01B 11/105
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11Measuring arrangements characterised by the use of optical means
08for measuring diameters
10of objects while moving
105using photoelectric detection means
G10L 21/0208
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
21Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
02Speech enhancement, e.g. noise reduction or echo cancellation
0208Noise filtering
G01S 17/00
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
出願人 Mitsubishi Electric Corporation
発明者 Daiki Ata
Keiichi Yamada
Kazuhiko Nakamura
代理人 Xsensus LLP
発明の名称
(EN) Signal processing device, sensor device, and signal processing method
要約
(EN)

A signal processing device for performing processing for reducing noise in a displacement amount measured on a basis of light reflected from a detection object includes a moving-average calculating unit that performs moving average calculation for an input signal to reduce a noise component included in the input signal and an infinite impulse response filter that reduces a noise component included in an input signal by digital signal processing. A filter coefficient of the infinite impulse response filter is determined on a basis of a difference between a first calculation result output by the moving-average calculating unit and a second calculation result output by the infinite impulse response filter when a same signal is input to the moving-average calculating unit and the infinite impulse response filter.