×

Optical finger mouse, electronic device and physiological characteristics detection device

  • US 9,301,694 B2
  • Filed: 09/13/2012
  • Issued: 04/05/2016
  • Est. Priority Date: 09/21/2011
  • Status: Active Grant
First Claim
Patent Images

1. An optical finger mouse configured to detect a displacement of a finger of a user and a physiological characteristic of the user, the optical finger mouse comprising:

  • a first light source configured to emit light of a first wavelength to the finger;

    a second light source configured to emit light of a second wavelength to the finger;

    a light control unit configured to control an on-state and an off-state of the first light source and the second light source;

    an image sensor configured to capture reflected light from the finger with a sampling frequency to generate a plurality of first image frames corresponding to the on-state of the first light source and a plurality of second image frames corresponding to the on-state of the second light source; and

    a processing unit configured to calculate both of the displacement of the finger for controlling a cursor and the physiological characteristic according to the first image frames and the second image frames captured by the image sensor,wherein in calculating the physiological characteristic, the processing unit is configured todivide each of the first image frames into at least two parts and calculate an average brightness of each part,analyze the average brightness of the each part of the first image frames to obtain a first intensity variation,divide each of the second image frames into at least two parts and calculate an average brightness of each part,analyze the average brightness of the each part of the second image frames to obtain a second intensity variation, andcalculate the physiological characteristic according to the first intensity variation and the second intensity variation.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×