POSITION DETECTION DEVICE

To provide a position detection device using a radio wave method.SOLUTION: A position detection device 1 includes a plurality of antennas 4 arranged apart from one another around an object to be operated, a signal source, and a control circuit 7. The plurality of antennas 4 include a transmission an...

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Bibliographic Details
Main Authors NISHIO YOSHITAKA, OTSUKA KANJI, AKIYAMA YUTAKA, YAMAMOTO MACHIKO, UEMATSU MASAKAZU, TANAKA SOICHIRO
Format Patent
LanguageEnglish
Japanese
Published 10.09.2020
Subjects
ANTENNAS, i.e. RADIO AERIALS
BASIC ELECTRIC ELEMENTS
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
PHYSICS
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Summary:To provide a position detection device using a radio wave method.SOLUTION: A position detection device 1 includes a plurality of antennas 4 arranged apart from one another around an object to be operated, a signal source, and a control circuit 7. The plurality of antennas 4 include a transmission antenna 41 that transmits a measurement signal and a reception antenna 42 that receives the measurement signal from the transmission antenna 41 as a reception signal. The signal source provides the measurement signal to the transmission antenna. The control circuit 7 calculates an operation position of an indicator with respect to a display panel 20 based on phase difference information between a reference signal which is a calculation reference and the reception signal received from the reception antenna 42.SELECTED DRAWING: Figure 1 【課題】電波利用方式の位置検出装置を提供する。【解決手段】位置検出装置１は、操作対象物の周囲に互いに離間して配置された複数のアンテナ４と、信号源と、制御回路７とを備えている。複数のアンテナ４は、計測信号を放射する送信アンテナ４１と、送信アンテナ４１からの計測信号を受信信号として受信する受信アンテナ４２と含む。信号源は、送信アンテナに計測信号を与える。制御回路７は、演算の基準となる基準信号と受信アンテナ４２から受信された受信信号との位相差情報に基づいて表示パネル２０に対する指示体の操作位置を演算する。【選択図】図１
Bibliography:Application Number: JP20190041258