Lines Matching refs:of

25 activate_slack		number of fingers to ignore before processing events
33 deactivate_slack	the number of "no contact" frames to ignore before
34 			propagating the end of activity events
36 When the last finger is removed from the device, it sends a number of empty
53 All N-Trig devices with product id of 1 report events in the ranges of
56 However not all of these devices have the same physical dimensions.  Most
58 at least one model (Dell Studio 17) has a 17" sensor.  The ratio of physical
65 With the release of the early multi-touch firmwares it became increasingly
71 not address the problem of dropping one of more contacts while other contacts
75 As observed ghost contacts are similar to actual use of the sensor, but they
78 of events the more likely those events are from a real contact, and that the
79 larger the size of each contact the more likely it is real.  Balancing the
80 goals of preventing ghosts and accepting real events quickly (to minimize
83 minimizing stored state as well as the cost of operations to make a decision,
86 Time is measured in terms of the number of fingers reported, not frames since
87 the probability of multiple simultaneous ghosts is expected to drop off
89 function of size, I just use it as a binary threshold.  A sufficiently large
99 a mechanism for filtering out ghosts in the form of an extra finger while
100 you actually are using the screen.  In practice this sort of ghost has
108 The calibration of these devices does drift over time.  If ghosts or contact
109 dropping worsen and interfere with the normal usage of your device, try
117 unofficial unsupported set of user space tools including a calibrator is
125 As of yet, all tested N-Trig firmwares do not track fingers.  When multiple