P

Inventor

HOLMGREN DAVID

CA9 patents
⚠️ This page may combine multiple inventors who share the name “HOLMGREN DAVID”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SMART TECHNOLOGIES ULC

4 patents
US7692625B2Apr 6, 2010

Camera-based touch system

SMART TECHNOLOGIES ULC251 citations98
US9207812B2Dec 8, 2015

Interactive input system and method

SMART TECHNOLOGIES ULC8 citations79
US9360966B2Jun 7, 2016

Method for generally continuously calibrating an interactive input system

SMART TECHNOLOGIES ULC0 citations48
US10228771B2Mar 12, 2019

System and method of pointer detection for interactive input

SMART TECHNOLOGIES ULC0 citations38

SMART TECHNOLOGIES INC

1 patent
US6919880B2Jul 19, 2005

Calibrating camera offsets to facilitate object position determination using triangulation

SMART TECHNOLOGIES INC151 citations97

HOLMGREN DAVID

1 patent
US8600107B2Dec 3, 2013

Interactive input system and method

HOLMGREN DAVID7 citations77

THOMPSON SEAN

1 patent
US8872772B2Oct 28, 2014

Interactive input system and pen tool therefor

THOMPSON SEAN5 citations71

MCGIBNEY GRANT

1 patent
US9329700B2May 3, 2016

Interactive system with successively activated illumination sources

MCGIBNEY GRANT2 citations56

MORRISON GERALD

1 patent
US9176627B2Nov 3, 2015

Camera-based touch system

MORRISON GERALD1 citations51