Patent · US Active

Electronic pen having fast response time

US8366338B2 · kind B2 · utility

3Cited by

24References

20Claims

0Family size

Assignee

Silverbrook Research Pty Ltd · AU

Inventors

Matthew John Underwood · Sydney, AU
Zsolt Szarka-Kovacs · Sydney, AU
Robert John Brice · Sydney, AU
Paul Lapstun · Sydney, AU
Kia Silverbrook · Sydney, AU

Key dates

Filing date	Jun 3, 2009
Grant date	Feb 5, 2013
Priority date	—
Expiry date	Aug 9, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG06F3/0321
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An electronic pen for interacting with a surface. The pen comprises a cartridge having a nib for contacting the surface, a capacitive force sensor cooperating with said cartridge for sensing a nib force transmitted axially through the cartridge, and a processor configured to generate force data indicative of a force detected by the force sensor. The capacitive force sensor comprises: a spring having an integral conductive moving plate resiliently biased towards a reference position, a conductive fixed plate and a dielectric separating said plates.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.