1717677-A2 is referenced by 16 patents and cites 6 patents.

Apparatus and methods are disclosed for simultaneously tracking multiple finger (202-204) and palm (206, 207) contacts as hands approach, touch, and slide across a proximity-sensing, compliant, and flexible multi-touch surface (2). The surface consists of compressible cushion (32), dielectric electrode (33), and circuitry layers. A simple proximity transduction circuit is placed under each electrode to maximise the signal-to-noise ratio and to reduce wiring complexity. Scanning and signal off-set removal on electrode array produces low-noise proximity images. Segmentation processing of each proximity image constructs a group of electrodes corresponding to each distinguishable contacts and extracts shape, position and surface proximity features for each group.; Groups in successive images which correspond to the same hand contact are linked by a persistent path tracker (245) which also detects individual contact touchdown and liftoff. 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
Method and apparatus for integrating manual input
Application Number
EP20060016830 19990125
Publication Number
1717677 (A2)
Application Date
January 25, 1999
Publication Date
November 2, 2006
Inventor
Elias John G
US
Westerman Wayne
US
Assignee
Elias John G
US
Westerman Wayne
US
IPC
G09G 05/00
G09G
G06T 07/20
G06K 09/00
G06F 03/041
G06F 03/03
G06F 03/033
G09G 05/00
G06T 07/20
G06K 09/00
G06F 03/041
G06F 03/038
G06F 03/03
G06F 03/044
G06F 03/033
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