| 发明名称 |
Close touch detection and tracking |
| 摘要 |
A method of tracking touches at a touch-sensing surface may include, detecting an initial location of a first contact and an initial location of a second contact at the touch-sensing surface based on a first scan of a touch-sensing surface, detecting a plurality of signal levels caused by the first contact and the second contact during a second scan of the touch-sensing surface, identifying a first signal level of the plurality of signal levels as a local maximum, and locating a lost touch based on one or more signal levels associated with one or more unit cells within a fixed distance from a first unit cell associated with the local maximum. |
| 申请公布号 |
US8823664(B2) |
申请公布日期 |
2014.09.02 |
| 申请号 |
US201213424336 |
申请日期 |
2012.03.19 |
| 申请人 |
Cypress Semiconductor Corporation |
发明人 |
Kyrynyuk Valeriy;Prudkyy Serhiy;Mandziy Vasyl |
| 分类号 |
G06F3/044;G06F3/041 |
主分类号 |
G06F3/044 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method, comprising:
based on a first scan of a touch-sensing surface, detecting an initial location of a first contact and an initial location of a second contact at the touch-sensing surface; during a second scan of the touch-sensing surface subsequent to the first scan, detecting a plurality of signal levels caused by the first contact and the second contact, wherein each signal level is associated with one of a plurality of unit cells of the touch-sensing surface; identifying a first signal level of the plurality of signal levels as a local maximum; and locating a lost touch based on one or more signal levels associated with one or more unit cells within a fixed distance from a first unit cell associated with the local maximum. |
| 地址 |
San Jose CA US |
