JP2019207682A - ノイズ抑制回路 - Google Patents
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- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
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- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
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- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
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Abstract
Description
本出願は、35U.S.C.§119(e)下で、2018年4月5日に出願された米国仮特許出願第62/653,331号に対する優先権を主張する。米国仮特許出願第62/653,331号は、参照により全体が本明細書に組み込まれる。
205 センサ電極
207 ノイズ源
210 電荷積分器
220 電流コンベヤ
250 コントローラ
255 バッファ
260 加算抵抗器
295 フィードバック信号
298 フィードバックループ
299 増幅器
Claims (20)
- 複数の低減ノイズ信号のそれぞれを、利得値と前記複数の低減ノイズ信号の濃度とに基づいて増幅することによってフィードバック信号を生成するように構成された増幅器と、
複数の電荷積分器であって、
ノイズ源に結合された複数の静電容量センサ電極から複数の結果信号を取得し、
前記フィードバック信号を使用して前記複数の結果信号内のノイズを軽減することによって前記複数の低減ノイズ信号を生成するように構成された複数の電荷積分器と、を有する処理システム。 - 前記複数の静電容量センサ電極の1つ以上に近い入力オブジェクトを、前記複数の低減ノイズ信号のうちの少なくとも1つに基づいて決定するように構成されたコントローラを更に有する、請求項1に記載の処理システム。
- 前記ノイズ源が、やはり前記コントローラによって操作される表示装置と関連付けられた、請求項2に記載の処理システム。
- 前記増幅器が、
前記複数の電荷積分器に結合された複数の入力抵抗器と、
前記複数の入力抵抗器に結合された複数の電流コンベヤと、
前記複数の電流コンベヤに結合された加算抵抗器と、を更に有する、請求項1に記載の処理システム。 - 前記複数の入力抵抗器がそれぞれRの抵抗を有し、
前記利得値がAであり、
前記複数の低減ノイズ信号の前記濃度がNであり、
前記加算抵抗器がA×R×(1/N)の抵抗を有し、
前記増幅器が、前記複数の低減ノイズ信号のそれぞれを−A/N倍に増幅する、請求項4に記載の処理システム。 - 前記複数の電流コンベヤがそれぞれ、
演算増幅器と、
前記演算増幅器の出力に結合された複数の電流ミラーと、
前記演算増幅器の入力に結合された安定化インピーダンスと、を有する、請求項4に記載の処理システム。 - 前記増幅器が、更に、
前記加算抵抗器に結合され、変調電圧を記憶するように構成されたバッファを有する、請求項4に記載の処理システム。 - 前記複数の静電容量センサ電極がそれぞれ、第1のインピーダンスによって前記ノイズ源に結合され、
前記複数の電荷積分器がそれぞれ、第2のインピーダンスに並列に演算増幅器を含み、
前記フィードバック信号が、前記複数の電荷積分器のそれぞれの非反転入力に結合された、請求項1に記載の処理システム。 - 増幅器によって、複数の低減ノイズ信号のそれぞれを利得値と前記複数の低減ノイズ信号の濃度とに基づいて増幅することによってフィードバック信号を生成するステップと、
ノイズ源に結合された複数の静電容量センサ電極から複数の結果信号を取得するステップと、
複数の電荷積分器によって、前記フィードバック信号を使用して前記複数の結果信号内のノイズを軽減することによって前記複数の低減ノイズ信号を生成するステップと、を含む方法。 - コントローラによって、前記複数の静電容量センサ電極の1つに近い入力オブジェクトを、前記複数の低減ノイズ信号のうちの少なくとも1つに基づいて決定するステップを更に含む、請求項9に記載の方法。
- 前記ノイズ源が、やはり前記コントローラによって操作される表示装置と関連付けられた、請求項10に記載の方法。
- 前記増幅器が、
前記複数の電荷積分器に結合された複数の入力抵抗と、
前記複数の入力抵抗に結合された複数の電流コンベヤと、
前記複数の電流コンベヤに結合された加算抵抗器と、を有し、
前記複数の入力抵抗器がそれぞれRの抵抗を有し、
前記利得値がAであり、
前記複数の低減ノイズ信号の前記濃度がNであり、
前記加算抵抗器がA×R×(1/N)の抵抗を有し、
前記増幅器が、前記複数の低減ノイズ信号のそれぞれを−A/N倍に増幅する、請求項9に記載の方法。 - 前記複数の電流コンベヤがそれぞれ、
演算増幅器と、
前記演算増幅器の出力に結合された複数の電流ミラーと、
前記演算増幅器の入力に結合された安定化インピーダンスとを有する、請求項12に記載の方法。 - ノイズ源に結合された複数の静電容量センサ電極と、
複数の低減ノイズ信号のそれぞれを、利得値と前記複数の低減ノイズ信号の濃度とに基づいて増幅することによってフィードバック信号を生成するように構成された増幅器と、
複数の電荷積分器であって、
複数の静電容量センサ電極から複数の結果信号を取得し、
前記フィードバック信号を使用して前記複数の結果信号内のノイズを軽減することによって前記複数の低減ノイズ信号を生成するように構成された複数の電荷積分器と、
前記複数の静電容量センサ電極の少なくとも1つに近い入力オブジェクトを、前記複数の低減ノイズ信号のうちの少なくとも1つに基づいて決定するように構成されたコントローラと有する入力装置。 - 前記ノイズ源が、やはり前記コントローラによって操作される表示装置と関連付けられた、請求項14に記載の入力装置。
- 前記増幅器が、
前記複数の電荷積分器に結合された複数の入力抵抗器と、
前記複数の入力抵抗器に結合された複数の電流コンベヤと、
前記複数の電流コンベヤに結合された加算抵抗器とを更に有する、請求項14に記載の入力装置。 - 前記複数の入力抵抗器がそれぞれRの抵抗を有し、
前記利得値がAであり、
前記複数の低減ノイズ信号の前記濃度がNであり、
前記加算抵抗器がA×R×(1/N)の抵抗を有し、
前記増幅器が、前記複数の低減ノイズ信号のそれぞれを−A/N倍に増幅する、請求項16に記載の入力装置。 - 前記複数の電流コンベヤがそれぞれ、
演算増幅器と、
前記演算増幅器の出力に結合された複数の電流ミラーと、
前記演算増幅器の入力に結合された安定化インピーダンスとを有する、請求項16に記載の入力装置。 - 前記増幅器が、更に、
前記加算抵抗器に結合され、変調電圧を記憶するように構成されたバッファを有する、請求項16に記載の入力装置。 - 前記複数の静電容量センサ電極がそれぞれ、第1のインピーダンスによって前記ノイズ源に結合され、
前記複数の電荷積分器がそれぞれ、第2のインピーダンスに並列に演算増幅器を有し、
前記フィードバック信号が、前記複数の電荷積分器のそれぞれの非反転入力に結合された、請求項14に記載の入力装置。
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US201862653331P | 2018-04-05 | 2018-04-05 | |
US62/653,331 | 2018-04-05 | ||
US16/373,369 | 2019-04-02 | ||
US16/373,369 US11054942B2 (en) | 2018-04-05 | 2019-04-02 | Noise suppression circuit |
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JP2019207682A true JP2019207682A (ja) | 2019-12-05 |
JP2019207682A5 JP2019207682A5 (ja) | 2022-03-30 |
JP7267073B2 JP7267073B2 (ja) | 2023-05-01 |
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CN (1) | CN110347282A (ja) |
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US11914820B2 (en) * | 2020-04-14 | 2024-02-27 | Synaptics Incorporated | Distributed analog display noise suppression circuit |
US11106317B1 (en) * | 2020-04-14 | 2021-08-31 | Synaptics Incorporated | Common mode noise suppression with restoration of common mode signal |
KR102348144B1 (ko) * | 2020-12-11 | 2022-01-07 | 주식회사 지니틱스 | 전류 컨베이어를 이용한 터치입력 감지장치 |
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US11460953B2 (en) | 2022-10-04 |
US11054942B2 (en) | 2021-07-06 |
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KR20190116940A (ko) | 2019-10-15 |
US20210294454A1 (en) | 2021-09-23 |
US20190310739A1 (en) | 2019-10-10 |
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