发明名称 |
Capacitive touchpad and toy incorporating the same |
摘要 |
Capacitive touchpad assemblies, toys including capacitive touchpad assemblies and integral card readers, and methods for detecting contact with a capacitive touch surface are provided. A capacitive touch surface may have a capacity that varies depending on whether it is being contacted by an object such as a human finger. A voltage of the capacitive touch surface may be altered during each of a predetermined number of recurring time intervals. The capacitance of the capacitive touch surface will determine the amount of time required to alter its voltage to a threshold voltage within each time interval. The sum amount of time required for the voltage of the capacitive touch surface to reach the threshold voltage in a predetermined number of time intervals may be used to determine whether the capacitive touch surface is being touched. |
申请公布号 |
US8400426(B2) |
申请公布日期 |
2013.03.19 |
申请号 |
US201113324857 |
申请日期 |
2011.12.13 |
申请人 |
ZIELINSKI JAMES;DEVOE CHARLES H;MATTEL, INC. |
发明人 |
ZIELINSKI JAMES;DEVOE CHARLES H |
分类号 |
G06F3/045 |
主分类号 |
G06F3/045 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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