OBJECT AND MOVEMENT DETECTION

• US 20110096954A1
• Filed: 03/18/2009
• Published: 04/28/2011
• Est. Priority Date: 03/18/2008
• Status: Active Grant

• Current Assignee: Elliptic Laboratories AS
• Original Assignee: Elliptic Laboratories AS
• Inventors: Dahl, Tobias
• Granted Patent: US 8,625,846 B2
• Time in Patent Office: Days
• US Class Current: 382/103
• CPC Class Codes: G01S 15/04 Systems determining presence of a target
• CPC Class Codes: G01S 15/62 Sense-of-movement determination G01S15/588 takes precedence
• CPC Class Codes: G06F 2203/04106 Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
• CPC Class Codes: G06F 2203/04108 Touchless 2D- digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface without distance measurement in the Z direction
• CPC Class Codes: G06F 3/017 Gesture based interaction, e.g. based on a set of recognized hand gestures interaction based on gestures traced on a digitiser G06F3/04883
• CPC Class Codes: G06F 3/043 using propagating acoustic waves
• CPC Class Codes: H04L 25/0204 of multiple channels
• CPC Class Codes: H04L 25/0242 using matrix methods

Abstract

Motions, positions or configurations off, for example a human hand can be recognised by transmitting a plurality of transmit signals in respective time frames; receiving a plurality of receive signals; determining a plurality of channel impulse responses using the transmit and receive signals; defining a matrix of impulse responses, with impulse responses for adjacent time frames adjacent each other; and analysing the matrix for patterns (22) corresponding to the motion position or configuration.

Claims

1-101. -101. (canceled)

102. A method of recognizing motion of a human hand, the method comprising:

transmitting a plurality of transmit signals in respective time frames;

receiving a plurality of receive signals, at least some of the receive signals being reflected from the hand;

determining a plurality of channel impulse responses using the transmit and receive signals;

defining a matrix of impulse responses, with impulse responses for adjacent time frames adjacent to each other; and

analysing the matrix for patterns corresponding to movement of the hand.