US 9,811,163 B2
Elastic touch input surface
Thomas Eriksson, Stockholm (SE); and Michael Lawrence Elyan, Drummoyne (AU)
Assigned to Neonode Inc., San Jose, CA (US)
Filed by Neonode Inc., San Jose, CA (US)
Filed on Oct. 1, 2015, as Appl. No. 14/872,164.
Application 14/872,164 is a continuation of application No. 13/731,023, filed on Dec. 30, 2012, granted, now 9,158,416.
Application 13/731,023 is a continuation in part of application No. 13/424,592, filed on Mar. 20, 2012, granted, now 8,416,217.
Application 13/731,023 is a continuation in part of application No. 13/424,543, filed on Mar. 20, 2012, granted, now 9,052,777.
Application 13/424,543 is a continuation in part of application No. PCT/US2011/029191, filed on Mar. 21, 2011.
Application 13/424,543 is a continuation in part of application No. 12/371,609, filed on Feb. 15, 2009, granted, now 8,339,379.
Application 12/371,609 is a continuation in part of application No. 12/760,567, filed on Apr. 15, 2010, granted, now 9,213,443.
Application 13/424,543 is a continuation in part of application No. 12/760,568, filed on Apr. 15, 2010, abandoned.
Claims priority of provisional application 61/609,325, filed on Mar. 11, 2012.
Claims priority of provisional application 61/564,868, filed on Nov. 30, 2011.
Claims priority of provisional application 61/564,164, filed on Nov. 28, 2011.
Claims priority of provisional application 61/379,012, filed on Sep. 1, 2010.
Claims priority of provisional application 61/380,600, filed on Sep. 7, 2010.
Claims priority of provisional application 61/410,930, filed on Nov. 7, 2010.
Claims priority of provisional application 61/169,779, filed on Apr. 16, 2009.
Prior Publication US 2016/0026250 A1, Jan. 28, 2016
Int. Cl. G06F 3/042 (2006.01); G06F 3/01 (2006.01); G06F 1/16 (2006.01); G06F 3/0488 (2013.01); G06F 3/041 (2006.01); G06F 3/0354 (2013.01)
CPC G06F 3/016 (2013.01) [G06F 1/169 (2013.01); G06F 1/1616 (2013.01); G06F 1/1643 (2013.01); G06F 3/03547 (2013.01); G06F 3/0414 (2013.01); G06F 3/0421 (2013.01); G06F 3/0428 (2013.01); G06F 3/04883 (2013.01); G06F 2203/04806 (2013.01); G06F 2203/04808 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A touch input device, comprising: a housing; an elastic layer at which depression by an object causes a local indentation in the elastic layer, the geometry of the local indentation being in accordance with the object's force of depression; one or more light emitters mounted in said housing; one or more light detectors mounted in said housing; a light guide positioned between said emitters and said elastic layer, that directs light beams from said emitters into said elastic layer at an angle such that the light beams, after entering said elastic layer, remain confined to said elastic layer by total internal reflection; a light guide positioned between said detectors and said elastic layer, that directs light beams exiting said elastic layer onto said detectors, each detector having a reference output value corresponding to an expected amount of light detection when said emitters are activated and no object is touching said elastic layer; and a processor, mounted in said housing and connected to said light detectors, determining the object's force of depression based on the geometry of the local indentation in the elastic layer, as calibrated by a deviation between actual and reference output values for one of said detectors; wherein said processor further determines a depth of the local indentation.