JP2008511045A - タッチセンス装置の空間分解能を向上させる方法 - Google Patents
タッチセンス装置の空間分解能を向上させる方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 12
- 239000006185 dispersion Substances 0.000 claims description 11
- 238000013507 mapping Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 abstract description 3
- 239000011800 void material Substances 0.000 description 6
- 238000003491 array Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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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
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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
- G06F3/0416—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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/033—Indexing scheme relating to G06F3/033
- G06F2203/0339—Touch strips, e.g. orthogonal touch strips to control cursor movement or scrolling; single touch strip to adjust parameter or to implement a row of soft keys
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Abstract
【選択図】図1
Description
本出願は、参照によりその全体を本明細書に組み込まれている2004年8月16日に出願された、本明細書と同名および同じ発明人による米国仮出願第60/522,107号に関連し、かつその優先権を主張するものである。
1.センサ・アレイが走査され、各センサに対応する信号値が収集される。
2.信号強度が最大となるセンサは、コード・セグメントfindMaxSensorを使用して検出される。
3.指が下にある電極は、コード・セグメントfindMaxElectrodeを使用して計算される。
4.セントロイドは、コード・セグメントcomputeCentroidを使用して計算される。
5.ステップ1〜4が繰り返される。
#define NUM_ELECTRODES 22
//グループA電極とセンサのマッピング
Sensor_to_A type_electrode[NUM_SENSORS] = {0,1,2,3,4,5,6,7,9,11,13};
next_A_electrode_sensor[NUM_SENSORS] = {1,2,3,4,5,6,7,1,3,5,7};
previous_A_electrode_sensor[NUM_SENSORS] = {6,0,1,2,3,4,5,6,1,3,5};
//グループB電極とセンサのマッピング
Sensor_to_B_type_electrode[NUM_SENSORS] = {15,8,17,10,19,12,21,14,16,18,20};
next_B_electrode_sensor[NUM_SENSORS] = {8,8,9,9,10,10,0,0,2,4,6};
previous_A_electrode_sensor[NUM_SENSORS] = {7,7,8,8,9,9,10,10,0,2,4};
//電極とセンサのマッピング
Electrode_to_Sensor[NUM_ELECTRODES] = {
0, // 0
1, // 1
2, // 2
3, // 3
4, // 4
5, // 5
6, // 6
7, // 7
1, // 8
8, // 9
3, // 10
9, // 11
5, // 12
10,// 13
7, // 14
0, // 15
8, // 16
2, // 17
9, // 18
4, // 19
10,// 20
6, // 21
};
//このコードが最大の信号を持つセンサを見つける
void findMaxSensor(void){
unsigned char maxval, i;
max_sensor = 0;
maxval = 0;
for (i = 0; i < NUM_SENSORS; i++){
if (SensorData[e] > maxval){
maxval = SensorData[i];
max_sensor = i;
}
}
}
//このコードが最大の信号を持つ電極を見つける
//最大のセンサに属する電極それらの電極に隣接する電極を試験することによ って開始する。
//タッチされた電極が最大のセンサに属する電極のいずれかについて2つの電 極の信号の強さを比較することによって識別される
//最大の信号のグループが指の下のものである
void findMaxElectrode(void){
int Asum, Bsum;
Asum = SensorData[next_A_electrode_sensor[max_sensor]]+
SensorData[previous_A_electrode_sensor[max_sensor]];
Bsum = SensorData[next_A_electrode_sensor[max_sensor]]+
SensorData[previous_B_electrode_sensor[max_sensor]];
if(Asum > Bsum){
maxelectrode = Sensor_to_A_type_electrode[max_sensor];
}else{
maxelectrode = Sensor_to_B_type_electrode[max_sensor];
}
}
//このコードが、タッチしている指に対応するセントロイドを
//本発明のアルゴリズムを使用してデコードされた位置を用いて計算する
#define CENTMULTIPLIER 8
void computeCentroid(void){
int pos_sum, electrode;
char offset;
int sval;
pos_sum = 0;
total_signal = 0;
//sum from maxelectrode in positive direction for two electrodes
for (offset = 1; offset < 3; offset++){
electrode = maxelectrode + offset;
if(electrode >= NUM_ELECTRODES){
electrode -= NUM_ELECTRODES;
}
sval = SensorData[Electrode_to_Sensor[electrode]];
total_signal+= sval;
pos_sum += CENTMULTIPLIER*sval*offset;
}
//sum from maxelectrode in negative direction for two electrodes
for(offset = 1; offset <3; offset++){
electrode = maxelectrode - offset;
if(electrode < 0){
electrode += NUM_ELECTRODES;
}
sval = SensorData[Electrode_to_Sensor[electrode]];
total_signal += sval;
pos_sum -= CENTMULTIPLIER*sval*offset;
}
total_signal += SensorData[maxe];
sval = pos_sum/total_signal;
sval += CENTMULTIPLIER*maxelectrode; //absolute offset by
maxelectrode
if(sval < 0){
Centroid = 176 + sval;
}
else {
Centroid = sval;
}
}
Claims (11)
- 複数のタッチ・センサ電極と、
いくつかのセンサ回路とを備えており、前記センサ回路の数は前記タッチ・センサ電極の数を下回っており、少なくとも1つのセンサ回路は前記タッチ・センサ電極の2つ以上の間で共有されており、
センサ回路を共有する前記タッチ・センサ電極のそれぞれは互いから空間的に分散距離だけ離れており、さらに各タッチ・センサ電極は1つのセンサ回路に直接接続されているタッチセンス装置。 - 前記分散距離は前記タッチセンス装置に固有の寸法のほぼ3分の1である請求項1に記載のタッチセンス装置。
- 各センサ回路は2つのタッチ・センサ電極に直接接続されている請求項1に記載のタッチセンス装置。
- 前記複数のタッチ・センサ電極は円形アレイに配置されている請求項1に記載のタッチセンス装置。
- 前記分散距離は前記円形アレイの円周のほぼ3分の1である請求項4に記載のタッチセンス装置。
- 各センサ回路は、2つのタッチ・センサ電極に直接接続されている請求項4に記載のタッチセンス装置。
- 前記タッチ・センサ電極は線形アレイに配置されている請求項1に記載のタッチセンス装置。
- 前記分散距離は前記線形アレイの長さのほぼ3分の1である請求項7に記載のタッチセンス装置。
- タッチセンス装置と組み合わせて使用する、物体を追跡する方法であって、前記タッチセンス装置は複数の電極と複数のセンサ回路とを備えており、前記センサ回路の少なくとも1つは2つ以上の電極に直接接続されており、
前記複数のセンサ回路のそれぞれに対応する信号値を収集するために前記複数のセンサ回路を走査するステップと、
信号値が最大となるセンサ回路を特定するステップと、
信号値が最大となる電極、すなわち前記信号値が最大となるセンサ回路に対応する電極を特定するステップと、
前記信号値が最大となる電極と隣接する電極に関連して前記追跡される物体のセントロイドを計算するステップと
を備える方法。 - 信号値が最大となるセンサ回路を特定するステップと信号値が最大となる電極を特定するステップとに必要なセンサと電極とのマッピングが参照テーブルに格納されている請求項9に記載の方法。
- 信号値が最大となる電極を特定するステップは、
前記信号値が最大となるセンサ回路に関連付けられた各電極を選定するステップと、
前記信号値が最大となるセンサ回路に関連付けられた前記電極に隣接する各電極を検出するステップと、
前記隣接する電極に関連付けられた信号値を比較するステップと、
隣接する電極の信号値が最大となる電極を選択することによって前記信号値が最大となる電極を特定するステップとを備える請求項9に記載の方法。
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US52210704P | 2004-08-16 | 2004-08-16 | |
PCT/US2005/029270 WO2006023569A1 (en) | 2004-08-16 | 2005-08-15 | A method of increasing the spatial resolution of touch sensitive devices |
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JP2011040492A Division JP5372985B2 (ja) | 2004-08-16 | 2011-02-25 | タッチセンス装置の空間分解能を向上させる方法 |
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JP2007525885A Pending JP2008511045A (ja) | 2004-08-16 | 2005-08-15 | タッチセンス装置の空間分解能を向上させる方法 |
JP2011040492A Expired - Fee Related JP5372985B2 (ja) | 2004-08-16 | 2011-02-25 | タッチセンス装置の空間分解能を向上させる方法 |
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US (1) | US7932897B2 (ja) |
EP (1) | EP1779228B1 (ja) |
JP (2) | JP2008511045A (ja) |
KR (3) | KR101065943B1 (ja) |
CN (2) | CN100555200C (ja) |
AT (1) | ATE553429T1 (ja) |
HK (1) | HK1106593A1 (ja) |
WO (1) | WO2006023569A1 (ja) |
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- 2005-08-15 WO PCT/US2005/029270 patent/WO2006023569A1/en active Application Filing
- 2005-08-15 KR KR1020107029671A patent/KR101109220B1/ko not_active IP Right Cessation
- 2005-08-15 EP EP05786737A patent/EP1779228B1/en not_active Not-in-force
- 2005-08-15 CN CNB2005800275198A patent/CN100555200C/zh not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
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EP1779228A1 (en) | 2007-05-02 |
JP5372985B2 (ja) | 2013-12-18 |
ATE553429T1 (de) | 2012-04-15 |
JP2011159301A (ja) | 2011-08-18 |
EP1779228B1 (en) | 2012-04-11 |
WO2006023569A1 (en) | 2006-03-02 |
CN101661357B (zh) | 2013-07-03 |
CN101031870A (zh) | 2007-09-05 |
US20060032680A1 (en) | 2006-02-16 |
KR101109220B1 (ko) | 2012-01-30 |
CN100555200C (zh) | 2009-10-28 |
CN101661357A (zh) | 2010-03-03 |
KR20070062503A (ko) | 2007-06-15 |
US7932897B2 (en) | 2011-04-26 |
KR101065943B1 (ko) | 2011-09-20 |
HK1106593A1 (en) | 2008-03-14 |
KR20110014687A (ko) | 2011-02-11 |
KR20090104118A (ko) | 2009-10-05 |
KR100927064B1 (ko) | 2009-11-13 |
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