Patent · US Expired

Methods and apparatus for data input

US5861875A · kind A · utility

286Cited by
14References
14Claims
0Family size

Assignee

Inventor

Key dates

Filing dateDec 11, 1996
Grant dateJan 19, 1999
Priority date
Expiry dateDec 11, 2016

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG06F3/0446
  • WIPO fieldComputer technology
  • WIPO sectorElectrical engineering

Abstract

Methods and apparatus for data input. Devices are provided in accordance with this invention which utilize capacitive coupling of an object to the device to sense the object's position. The devices are comprised of a plurality of electrode strips which form virtual electrodes. The virtual electrodes are selectively connected to form virtual dipole electrodes which are responsive to the object's position.

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