US 9,811,218 B2
Location based object classification
Tom Vandermeijden, Los Gatos, CA (US)
Assigned to Synaptics Incorporated, San Jose, CA (US)
Filed by Synaptics Incorporated, San Jose, CA (US)
Filed on Dec. 18, 2014, as Appl. No. 14/576,026.
Claims priority of provisional application 62/038,231, filed on Aug. 16, 2014.
Prior Publication US 2016/0048259 A1, Feb. 18, 2016
Int. Cl. G06F 3/044 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/044 (2013.01) [G06F 3/0418 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A processing system for a capacitive sensing device, comprising:
a processor configured to execute instructions to perform operations comprising:
a sensor module for performing capacitive sensing in a sensing region using a plurality of sensor electrodes, the sensing region comprising a first sub-region, a second sub-region, and a third sub-region; and
a determination module for:
detecting a first input object in the sensing region upon an initial contact of the first input object in the sensing region,
determining first positional information of the first input object,
determining, from the first positional information, that the first input object is located in the second sub-region of the sensing region,
determining a length of the first input object, the length of the first input object being a size of the first input object along a first axis,
determining a distance between the first input object and the third sub-region,
determining, based on the first input object being in the second sub-region, a length threshold matching the distance between the first input object and the third sub-region,
wherein, in the second sub-region, the length threshold varies according to the distance to the third sub-region,
responsive to the first input object being located in the second sub-region of the sensing region and the length of the first input object being greater than the length threshold, suppressing reporting of the first input object.