TW200943132A - Digital board and method of obtaining position thereof - Google Patents
Digital board and method of obtaining position thereofInfo
- Publication number
- TW200943132A TW200943132A TW97112867A TW97112867A TW200943132A TW 200943132 A TW200943132 A TW 200943132A TW 97112867 A TW97112867 A TW 97112867A TW 97112867 A TW97112867 A TW 97112867A TW 200943132 A TW200943132 A TW 200943132A
- Authority
- TW
- Taiwan
- Prior art keywords
- antenna
- control circuit
- antenna loop
- basic
- antennas
- Prior art date
Links
Landscapes
- Position Input By Displaying (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
A digital board includes a plurality of antenna loop circuits, a plurality of switches electrically connected to the corresponding the antenna loop circuits, and a control circuit. Each antenna loop circuit has a basic antenna and at least an extended antenna serially connected to the basic antenna. The serial number combination of an antenna loop circuit of any three adjacent antennas of the basic antennas and the extended antennas is unique, and the control circuit has a logic position table that stores the serial number combination and the corresponded logic position. The control circuit controls the on/off of the switch sequentially to receive an original output signal of each set of the antenna loop circuit. Further, the control circuit determines the position of a digital pen according to the logic position table.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW97112867A TW200943132A (en) | 2008-04-09 | 2008-04-09 | Digital board and method of obtaining position thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW97112867A TW200943132A (en) | 2008-04-09 | 2008-04-09 | Digital board and method of obtaining position thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200943132A true TW200943132A (en) | 2009-10-16 |
TWI351632B TWI351632B (en) | 2011-11-01 |
Family
ID=44868930
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW97112867A TW200943132A (en) | 2008-04-09 | 2008-04-09 | Digital board and method of obtaining position thereof |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW200943132A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103294289A (en) * | 2012-03-02 | 2013-09-11 | 禾瑞亚科技股份有限公司 | Capacitive touch system and method with automatic correction function |
TWI456469B (en) * | 2012-03-02 | 2014-10-11 | Egalax Empia Technology Inc | Capacitive touch system and method with auto-calibration |
TWI484377B (en) * | 2013-04-30 | 2015-05-11 | Sunrex Technology Corp | Position detection method and system |
-
2008
- 2008-04-09 TW TW97112867A patent/TW200943132A/en unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103294289A (en) * | 2012-03-02 | 2013-09-11 | 禾瑞亚科技股份有限公司 | Capacitive touch system and method with automatic correction function |
TWI456469B (en) * | 2012-03-02 | 2014-10-11 | Egalax Empia Technology Inc | Capacitive touch system and method with auto-calibration |
CN103294289B (en) * | 2012-03-02 | 2016-02-03 | 禾瑞亚科技股份有限公司 | The capacitance touch control system of tool automatic calibration and method |
TWI484377B (en) * | 2013-04-30 | 2015-05-11 | Sunrex Technology Corp | Position detection method and system |
Also Published As
Publication number | Publication date |
---|---|
TWI351632B (en) | 2011-11-01 |
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