08466880 is referenced by 37 patents and cites 507 patents.

Apparatus and methods are disclosed for simultaneously tracking multiple finger and palm contacts as hands approach, touch, and slide across a proximity-sensing, multi-touch surface. Identification and classification of intuitive hand configurations and motions enables unprecedented integration of typing, resting, pointing, scrolling, 3D manipulation, and handwriting into a versatile, ergonomic computer input device.

Title
Multi-touch contact motion extraction
Application Number
12/342027
Publication Number
8466880 (B2)
Application Date
December 22, 2008
Publication Date
June 18, 2013
Inventor
John Greer Elias
Townsend
DE, US
Wayne Carl Westerman
San Francisco
CA, US
Agent
Morrison & Foerster
Assignee
Apple
CA, US
IPC
G06F 3/41
View Original Source