A changeable operation feeling (tactile sensation) is provided for a user manipulating the knob of manual input device. The manual input device includes a feeling providing device which has plural discs fixed to a control shaft, bearing feeling patterns on their circumferential surfaces and a ball holder...http://www.google.com/patents/US6987508?utm_source=gb-gplus-sharePatent US6987508 - Manual input device which provides its control knob with plural modes of operation feeling, and car-mounted apparatus controller based thereon
