| 发明名称 | Touch sensitive device | ||
| 摘要 | A method of generating a keyboard switch haptic sensation in a coupled system comprising a touch-sensitive surface and a force exciter or actuator coupled to the touch-sensitive surface, the method comprising generating a carrier wave signal at frequencies within the frequency bandwidth of the coupled system, modulating the carrier wave signal with a modulation envelope so that the modulated carrier wave signal has a closely spaced pair of peaks, and driving the exciter or actuator with the modulated carrier wave signal to excite the touch-sensitive surface to provide a closely spaced pair of impulses whereby the keyboard switch haptic sensation is simulated to a user touching the touch-sensitive surface. | ||
| 申请公布号 | US9001060(B2) | 申请公布日期 | 2015.04.07 |
| 申请号 | US201013498744 | 申请日期 | 2010.10.01 |
| 申请人 | New Transducers Limited | 发明人 | Harris Neil John |
| 分类号 | G06F3/041;G06F3/02;G06F3/043;G06F3/045;G06F3/044;G06F3/046;G08B6/00;H01H13/14;G06F3/01;G06F3/0488 | 主分类号 | G06F3/041 |
| 代理机构 | Roylance, Abrams, Berdo & Goodman LLP | 代理人 | Cantor Alan I.;Roylance, Abrams, Berdo & Goodman LLP |
| 主权项 | 1. A method of generating a keyboard switch haptic sensation in a coupled system comprising a touch-sensitive surface and a force exciter or actuator coupled to the touch-sensitive surface, the method comprising generating a carrier wave signal at frequencies within the frequency bandwidth of the coupled system, modulating the carrier wave signal with a modulation envelope so that the modulated carrier wave signal has a closely spaced pair of peaks comprising a first peak and a second peak, and driving the exciter or actuator with the modulated carrier wave signal to excite the touch-sensitive surface to provide a closely spaced pair of pulses whereby the keyboard switch haptic sensation is simulated to a user touching the touch-sensitive surface, wherein the modulation envelope comprises a sum of two exponential functions having different decay rates so that the modulated carrier wave signal has the closely spaced pair of peaks. | ||
| 地址 | Cambridgeshire GB | ||