JP4825272B2 - コンデンサ式タッチパッドの制御回路、方法及びその応用 - Google Patents
コンデンサ式タッチパッドの制御回路、方法及びその応用 Download PDFInfo
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- JP4825272B2 JP4825272B2 JP2009006221A JP2009006221A JP4825272B2 JP 4825272 B2 JP4825272 B2 JP 4825272B2 JP 2009006221 A JP2009006221 A JP 2009006221A JP 2009006221 A JP2009006221 A JP 2009006221A JP 4825272 B2 JP4825272 B2 JP 4825272B2
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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
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
-
- 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
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
-
- 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
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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)
- Position Input By Displaying (AREA)
- Electronic Switches (AREA)
Description
本発明の目的の一つはコンデンサ式タッチパッドの制御方法の提供にある。
本発明の目的の一つはコンデンサ式タッチパッドモジュールの提供にある。
12 センサ
120 X方向センサ
122 Y方向センサ
124 X方向センサ
126 Y方向センサ
14 アナログマルチプレクサー
16 変調器
161 電流源
162 電流源
163 電流源
164 電流源
18 復調器
20 電圧処理回路
30 センサ
32 センサ
34 センサ
40 センサ層
42 誘電層
44 アース層
46 誘電層
48 センサ層
50 誘電層
52 素子層
55 制御回路
552 導線
554 導線
60 プッシュボタン
62 隙間
64 アース層
Claims (15)
- コンデンサ式タッチパッドの制御回路において、
該コンデンサ式タッチパッドは第一トレース及び第二トレースを備え、
前記制御回路は、
第一信号及び第一信号と同位相の第二信号を供給する変調器と、
マルチプレクサーであって、その第1端がコンデンサ式タッチパッドに、その第2端が変調器に接続され、前記第一信号を前記第一トレースに、前記第二信号を前記第二トレースに供給する前記マルチプレクサーと、
該マルチプレクサーの前記第2端に接続されて、参考信号で前記第一トレース上の信号を復調する復調器と、を備えることを特徴とするコンデンサ式タッチパッドの制御回路。 - 前記参考信号は直流電圧であることを特徴とする請求項1記載のコンデンサ式タッチパッドの制御回路。
- 前記制御回路は復調器の復調結果をキャパシタンス変化量に変換する電圧処理回路を備えたことを特徴とする請求項1記載のコンデンサ式タッチパッドの制御回路。
- 前記第二トレースは前記第一トレースに近接することを特徴とする、請求項1記載のコンデンサ式タッチパッドの制御回路。
- 前記第一トレースに前記第一信号が供給されるのと同時に、前記第二トレースに前記第二信号が供給されることを特徴とする、請求項1記載のコンデンサ式タッチパッドの制御回路。
- コンデンサ式タッチパッドの制御方法において、
該コンデンサ式タッチパッドは第一トレース及び第二トレースを備え、
前記制御方法は、
第一信号が前記第一トレースに対して充放電を行い、
前記第一信号と同位相の第二信号が前記第二トレースに対して充放電を行い、
参考信号で前記第一トレース上の信号を復調することを特徴とするコンデンサ式タッチパッドの制御方法。 - 前記参考信号で前記第一トレース上の信号を復調するステップは、参考信号として直流電圧を供給することを含むことを特徴とする請求項6記載のコンデンサ式タッチパッドの制御方法。
- 前記コンデンサ式タッチパッドの制御方法は、更に、前記参考信号で第一トレース上の信号を復調した結果をキャパシタンス変化量に変換するステップを含むことを特徴とする請求項6記載のコンデンサ式タッチパッドの制御方法。
- コンデンサ式タッチパッドモジュールにおいて、
第一トレース及び第二トレースを備えるコンデンサ式タッチパッドと、
第一信号及び第一信号と同位相の第二信号を供給する変調器と、
マルチプレクサーであって、その第1端がコンデンサ式タッチパッドに、その第2端が変調器に接続され、前記第一信号を前記第一トレースに、前記第二信号を前記第二トレースに供給する前記マルチプレクサーと、
該マルチプレクサーの前記第2端に接続されて、参考信号で前記第一トレース上の信号を復調する復調器と、を備えることを特徴とするコンデンサ式タッチパッドモジュール。 - 前記参考信号は直流電圧であることを特徴とする請求項9記載のコンデンサ式タッチパッドモジュール。
- 前記第一トレースは複数の第一センサを備えることを特徴とする請求項9記載のコンデンサ式タッチパッドモジュール。
- 前記第二トレースは複数の第二センサを備えることを特徴とする請求項9記載のコンデンサ式タッチパッドモジュール。
- 前記第二トレースは第一トレースに近接することを特徴とする請求項9記載のコンデンサ式タッチパッドモジュール。
- 前記コンデンサ式タッチパッドモジュールは更に電圧処理回路を備えて復調器の復調結果をキャパシタンス変化量に変換することを特徴とする請求項9記載のコンデンサ式タッチパッドモジュール。
- 前記第一トレースに前記第一信号が供給されるのと同時に、前記第二トレースに前記第二信号が供給されることを特徴とする請求項9記載のコンデンサ式タッチパッドモジュール。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW097142063A TW201017501A (en) | 2008-10-31 | 2008-10-31 | The control circuit, method, and applications of capacitive touch panel |
TW097142063 | 2008-10-31 |
Publications (2)
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JP2010108472A JP2010108472A (ja) | 2010-05-13 |
JP4825272B2 true JP4825272B2 (ja) | 2011-11-30 |
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JP2009006221A Expired - Fee Related JP4825272B2 (ja) | 2008-10-31 | 2009-01-15 | コンデンサ式タッチパッドの制御回路、方法及びその応用 |
Country Status (3)
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US (1) | US8884909B2 (ja) |
JP (1) | JP4825272B2 (ja) |
TW (1) | TW201017501A (ja) |
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-
2009
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- 2009-02-25 US US12/379,573 patent/US8884909B2/en not_active Expired - Fee Related
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Publication number | Publication date |
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TWI363292B (ja) | 2012-05-01 |
JP2010108472A (ja) | 2010-05-13 |
TW201017501A (en) | 2010-05-01 |
US8884909B2 (en) | 2014-11-11 |
US20100110037A1 (en) | 2010-05-06 |
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