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System and method for objectively measuring user experience of touch screen based devices

  • US 10,261,611 B2
  • Filed: 12/03/2012
  • Issued: 04/16/2019
  • Est. Priority Date: 12/03/2012
  • Status: Active Grant
First Claim
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1. A method of measuring latency related to touch screen response, the method comprising:

  • generating, by a camera, a video of an interaction with a touch screen of a device, wherein the interaction comprises at least a first contact between a member and the touch screen and (ii) a response of the touch screen to the first contact;

    monitoring, by a processor, frame change rates of the touch screen based on the interaction video;

    determining, by the processor, a response end time of the touch screen response based on the monitored frame change rates of the touch screen;

    determining, by the processor, a contact time of the first contact based on the interaction video; and

    determining, by the processor, a latency of the touch screen response to the first contact based on the contact time and the response end time.

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