The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 2007
Filed:
Apr. 08, 2002
Miroslav Trajkovic, Ossining, NY (US);
Antonio Colmenarez, Maracaibo, VE;
Srinivas Gutta, Yorktown Heights, NY (US);
Miroslav Trajkovic, Ossining, NY (US);
Antonio Colmenarez, Maracaibo, VE;
Srinivas Gutta, Yorktown Heights, NY (US);
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
An acoustic based pointing device and a system and method for using the pointing device to move a cursor on a display screen of a display device. The pointing device comprises an acoustic source that generates and propagates an acoustic signal that is detected by four microphones M, M, M, and Mand is then converted into corresponding periodic electrical signals S, S, S, and S. The position vectorof the acoustic source is calculated by solving triangulation equations that depend on phase-shift time delays between Sand Sfor j=1, 2, and 3. A position vectoris calculated fromusing a scale vector that relates a change in position of the cursor to a change in position of the acoustic source. Then the cursor is moved to a position Passociated with the position vector.