JP6706660B2 - 多段階フィードバックコンデンサスイッチングスキーム - Google Patents
多段階フィードバックコンデンサスイッチングスキーム Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- 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
- G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- 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
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04108—Touchless 2D- digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface without distance measurement in the Z direction
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/96—Touch switches
- H03K2217/9607—Capacitive touch switches
- H03K2217/960735—Capacitive touch switches characterised by circuit details
- H03K2217/96074—Switched capacitor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electronic Switches (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Description
[0001]実施形態は、一般には入力感知、詳細には静電容量感知(capacitance sensing:キャパシタンスセンシング)に関する。
多段階漸進的スイッチング技法
チャージポンプ回路のためのスイッチングスキーム
110 処理システム
120 感知領域
130 ボタン
140 入力物体
202 センサモジュール
204 決定モジュール
210 センサ電極
220 センサ電極
300 静電容量測定回路
302 差動増幅器
304 フィードバックコンデンサ
306 フィードバックコンデンサ
308 スイッチ
310 ノード
312 ノード
314 スイッチ
316 抵抗器
320 スイッチ
340 線グラフ
350 線グラフ
400 静電容量測定回路
402 差動増幅器
404 フィードバックコンデンサ
406 フィードバックコンデンサ
408 スイッチ
410 ノード
412 ノード
420 スイッチ
422 スイッチ
424 スイッチ
426 制御モジュール
600 静電容量測定回路
602 差動増幅器
604 フィードバック静電容量
606 フィードバック静電容量
608 スイッチ
610 スイッチ
612 スイッチ
614 スイッチ
620 スイッチ
700 回路
702 電荷生成回路
704 抵抗器
706 抵抗器
708 抵抗器
710 バッファー
712 スイッチ
714 スイッチ
716 コンデンサ
720 電流コンベヤ
730 電流増幅器
800 波形
900 チャージポンプ回路
902 スイッチング素子
904 スイッチング素子
910 遅延回路
Claims (5)
- 静電容量測定の方法であって、当該方法は、
静電容量測定回路のフィードバックコンデンサを第1の電圧レベルにリセットするステップであって、前記フィードバックコンデンサが差動増幅器の第1の入力部と前記差動増幅器の出力部との間に結合されている、ステップと、
前記フィードバックコンデンサと前記差動増幅器の前記出力部との間の複数のスイッチを開くステップと、
測定フェーズを開始するためにセンサ電極と前記差動増幅器の前記第1の入力部とを結合するステップと、
前記フィードバックコンデンサと前記差動増幅器の前記出力部との間の前記複数のスイッチの第1のスイッチを閉じるステップであり、該第1のスイッチを閉じるステップにより前記フィードバックコンデンサと直列に結合される前記第1のスイッチに第1の抵抗値を適用する、ステップと、
ある時間遅延の後に、前記複数のスイッチの第2のスイッチをオンし、前記第1のスイッチと並列に結合される前記第2のスイッチにおいて第2の抵抗値を生じさせるステップと、
前記第1のスイッチを閉じてからある遅延の後に前記複数のスイッチの残りを閉じるステップと、
前記センサ電極と入力物体との間の結合に相当する絶対静電容量が測定されるように前記センサ電極の電荷を積分するために前記差動増幅器を動作させるステップと、
を含む、方法。 - 前記静電容量測定回路の前記フィードバックコンデンサを前記第1の電圧レベルにリセットするステップが、
前記フィードバックコンデンサを第2の電圧レベルに結合し前記フィードバックコンデンサをバックグラウンド静電容量消去のためにプリチャージするように、プリチャージスイッチを動作させるサブステップ、
をさらに含む、請求項1に記載の方法。 - 前記フィードバックコンデンサと前記差動増幅器の前記出力部との間の前記複数のスイッチの前記第1のスイッチ及び前記第2のスイッチが、
第1の端子、第2の端子、及び第3の端子を有する第1のトランジスター及び第2のトランジスターであって、前記第1のスイッチの前記第1の端子及び前記第2のスイッチの前記第1の端子が並列に接続され、前記第1のスイッチの前記第2の端子及び前記第2のスイッチの前記第2の端子が並列に接続されており、前記第1のトランジスター及び前記第2のトランジスターが、前記第1のトランジスターの前記第3の端子及び前記第2のトランジスターの前記第3の端子で複数の制御信号を受信するように構成されている、第1のトランジスター及び第2のトランジスター、
を備えている、請求項1に記載の方法。 - 前記フィードバックコンデンサと前記差動増幅器の前記出力部との間の前記複数のスイッチの前記第1のスイッチを閉じるステップが、
前記第1のスイッチを、前記第1のスイッチに第1の抵抗値を生じさせる線形モードへと動作させるサブステップをさらに含み、
前記第1のスイッチを閉じてから前記遅延の後に前記複数のスイッチの前記残りを閉じるステップが、
前記第2のスイッチを、前記第2のスイッチに第2の抵抗値を生じさせる飽和モードへと動作させるサブステップであって、前記第1の抵抗値が前記第2の抵抗値よりも大きい、サブステップをさらに含む、
請求項1に記載の方法。 - 前記フィードバックコンデンサと前記差動増幅器の前記出力部との間の前記複数のスイッチの各スイッチが、前記差動増幅器の前記第1の入力部と前記差動増幅器の前記出力部との間に関連付けられた前記フィードバックコンデンサを結合するように構成されている、請求項1に記載の方法。
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US201562162418P | 2015-05-15 | 2015-05-15 | |
US62/162,418 | 2015-05-15 | ||
US14/870,243 | 2015-09-30 | ||
US14/870,243 US9740351B2 (en) | 2015-05-15 | 2015-09-30 | Multi-step incremental switching scheme |
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KR102267365B1 (ko) | 2021-06-21 |
CN106155443A (zh) | 2016-11-23 |
CN106155443B (zh) | 2020-05-05 |
JP6524016B2 (ja) | 2019-06-05 |
US20160334902A1 (en) | 2016-11-17 |
KR20160134567A (ko) | 2016-11-23 |
JP2019066485A (ja) | 2019-04-25 |
JP2016219003A (ja) | 2016-12-22 |
US9740351B2 (en) | 2017-08-22 |
KR20190015436A (ko) | 2019-02-13 |
KR101946688B1 (ko) | 2019-02-11 |
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