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Method for unlocking touch screen, electronic device thereof, and recording medium thereof

  • US 9,389,762 B2
  • Filed: 11/27/2013
  • Issued: 07/12/2016
  • Est. Priority Date: 11/29/2012
  • Status: Active Grant
First Claim
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1. An electronic device for unlocking a touch screen, comprising:

  • the touch screen; and

    a processor, executing the following operations;

    displaying a continuous circular boundary on the touch screen while the touch screen is locked upon detecting a first touch signal, wherein said first touch signal is on said boundary;

    detecting a second touch signal on said boundary at a first relative distance from said first touch signal, while said first touch signal remains on said boundary;

    changing a size of said boundary according to a second relative distance between said first touch signal and said second touch signal after at least one of said first touch signal or said second touch signal moves; and

    unlocking the touch screen when a difference between the first relative distance and the second relative distance is larger than a predetermined value, wherein the first relative distance and the second relative distance are greater than zero.

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