Character input method and device using a background image portion as a control region

  • US 10,621,766 B2
  • Filed: 10/13/2017
  • Issued: 04/14/2020
  • Est. Priority Date: 03/15/2017
  • Status: Active Grant
First Claim
Patent Images

1. A character input method, comprising:

  • acquiring a background image;

    determining a portion of the background image as a control region;

    superimposedly displaying a character input interface and the background image; and

    moving the control region relative to the character input interface to select a particular character in the character input interface,wherein the determining a portion of the background image as a control region comprises;

    calculating a local average brightness of each portion in the background image and determining a portion having an average brightness significantly different from average brightness of other portions as the control region.

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