3/11/2023 0 Comments Trackpoint jump scrolling![]() ![]() This simple formula was covered by US Patent US5570111A which expired in 2014. The default scaling factor is 6 when processing is performed every 10 ms. It is implemented in the TrackPoint module's firmware by adding scaled joystick-acceleration to the linear joystick magnitude before further processing. To avoid having the pointer feeling sluggish (having inertia), the pointer is accelerated when the joystick moves, in order to make it feel more responsive. TrackPoint modules (version III and later) employ what IBM calls "negative inertia". įirst TrackPoint that was a pointing stickĪdded middle-button scroll and press-to-select (PtS) features The original Trackpoint was a combo trackball and mouse for the IBM PS/2 L40 SX laptop.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |