Robotic Touch Screen Latency Measurement System
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Solution Overview
Problem
Conventional methods for measuring the display response rate of touch screen devices are inaccurate due to reliance on human interaction, which is inconsistent and prone to error, and lack objective measurement techniques.
Innovation Solution
A system and method utilizing a robotic member to interact with a touch screen, with a video camera recording the interaction and a processor analyzing the data to calculate latency, including changes in the display, haptic feedback, and audio responses, providing an objective measurement of touch screen response.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If human interaction is used to determine display response rate, then measurement can be performed, but accuracy and consistency deteriorate due to human error and variability
Solution Approach 1:
The patent replaces the mechanical/manual system of human interaction with an automated robotic system. A robotic member equipped with sensors performs touch screen interactions, eliminating human variability. The robot can precisely replicate touch gestures and maintain consistent pressure, timing, and location, thereby improving both measurement accuracy and reliability.
Solution Approach 2:
The patent introduces a robotic member as an intermediary between the measurement system and the touch screen device. This intermediary object performs the physical interaction with the touch screen while being controlled and monitored by the measurement system, allowing for precise control and repeatable measurements without direct human involvement.
2Productivity
If conventional metrics maintained on the device are used, then measurement can be performed, but objectivity deteriorates due to lack of external verification
Solution Approach 1:
The patent introduces an external video camera as an intermediary observation device that records the interaction between the robotic member and the touch screen from an independent perspective. This external recording system provides objective verification of the measurements, allowing for validation of the data collected without relying solely on device-internal metrics.
Solution Approach 2:
The patent implements a feedback loop where the video camera records the interaction, and this recording is analyzed to verify and validate the measurement data. The system uses the recorded video footage to confirm that the robotic member performed the intended actions and to objectively measure the display response time, providing external verification of the measurement accuracy.
Data Source
AI summary
In certain embodiments, latency measurement related to touch screen response may be facilitated. In some embodiments, a robotic member may be moved to perform a physical contact with a touch screen of a device. Frame change rates of the touch screen may be monitored. A response end time of a response depicted on the touch screen may be determined based on the monitored frame change rates of the touch screen, where the touch-screen-depicted response is a response to. A latency of the touch screen response to the first contact may be determined based on a contact time of the physical contact and the response end time.