Capacitive mat information handling system display and totem interactions

US9753591B2 · kind B2 · utility

Assignee

• Dell Products L.P. · US

Inventors

• Vinh X. Bui · Round Rock, US
• John Trevor Morrison · Round Rock, US
• Rocco Ancona · Austin, US
• Roman Joel Pacheco · Leander, US
• Karthik Krishnakumar · Round Rock, US
• Andrew T. Sultenfuss · Leander, US
• Abu Shaher Sanaullah · Austin, US
• Mark R. Ligameri · Austin, US
• Michiel Sebastiaan Emanuel Petrus Knoppert · Amsterdam, NL

Key dates

• Filing date: Apr 21, 2015
• Grant date: Sep 5, 2017
• Expiry date: Nov 8, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F2203/04106
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Identifying characteristics integrated in a totem and detected by a capacitive display mat are applied to perform functions in response to end user inputs. Identifying characteristics include capacitive feet integrated in a totem bottom surface with identifying features including varying capacitive values for the feet, varying pad sizes and shapes, varying pad patterns and varying capacitive oscillation frequencies. In one embodiment, the surface area of the totem in contact with the capacitive mat varies depending upon the pressure placed on the totem to alter the shape of a compressible material disposed at the bottom surface.