公开(公告)号：US20150169114A1

公开(公告)日：2015-06-18

申请号：US14631564

申请日：2015-02-25

Applicant: Apple Inc.

Inventor： Brian Michael KING ,  Omar S. LEUNG ,  Paul G. PUSKARICH ,  Jeffrey Traer BERNSTEIN ,  Andrea MUCIGNAT ,  Avi E. CIEPLINSKI ,  Muhammad Umar CHOUDRY ,  Praveen R. SUBRAMANI ,  Marc J. PICHE ,  David AMM ,  Duncan Robert KERR

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/0416 ,  G06F3/0418 ,  G06F3/044 ,  G06F2203/04101 ,  G06F2203/04106 ,  G06F2203/04108 ,  G06F2203/04111

Abstract: Compensation for sensors in a touch and hover sensing device is disclosed. Compensation can be for sensor resistance and/or sensor sensitivity variation that can adversely affect touch and hover measurements at the sensors. To compensate for sensor resistance, the device can gang adjacent sensors together so as to reduce the overall resistance of the sensors. In addition or alternatively, the device can drive the sensors with voltages from multiple directions so as to reduce the effects of the sensors' resistance. To compensate for sensor sensitivity variation (generally at issue for hover measurements), the device can apply a gain factor to the measurements, where the gain factor is a function of the sensor location, so as to reduce the sensitivity variation at different sensor locations on the device.

Abstract translation: 公开了触摸和悬停感测装置中传感器的补偿。 补偿可用于传感器电阻和/或传感器灵敏度变化，可能会对传感器的触摸和悬停测量产生不利影响。 为了补偿传感器电阻，器件可以将相邻的传感器组合在一起，以减少传感器的整体电阻。 另外或替代地，该装置可以用来自多个方向的电压来驱动传感器，以便减少传感器电阻的影响。 为了补偿传感器灵敏度变化（通常对于悬停测量通常是一个问题），器件可以对测量应用增益因子，其中增益因子是传感器位置的函数，以便减少不同传感器位置处的灵敏度变化 装置。