Latency measurement
First Claim
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1. A method implemented by one or more computing devices, the method comprising:
- measuring a time delay of a touchscreen device to evaluate a touch input by;
placing a conductor that is disposed proximal to the touchscreen device in a grounded state;
receiving a report from the touchscreen device indicating a point in time at which the touch input was detected by the touchscreen device; and
computing the time delay by comparing the point in time at which the touch input was detected by the touchscreen device with a point in time at which the conductor was placed in the grounded state.
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Abstract
Touchscreen testing techniques are described. In one or more implementations, a piece of conductor (e.g., metal) is positioned as proximal to a touchscreen device and the touchscreen device is tested by simulating a touch of a user. This technique may be utilized to perform a variety of different testing of a touchscreen device, such as to test latency and probabilistic latency. Additional techniques are also described including contact geometry testing techniques.
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Citations
20 Claims
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1. A method implemented by one or more computing devices, the method comprising:
measuring a time delay of a touchscreen device to evaluate a touch input by; placing a conductor that is disposed proximal to the touchscreen device in a grounded state; receiving a report from the touchscreen device indicating a point in time at which the touch input was detected by the touchscreen device; and computing the time delay by comparing the point in time at which the touch input was detected by the touchscreen device with a point in time at which the conductor was placed in the grounded state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus comprising:
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a clock; a conductor configured to be disposed proximally to a touchscreen device; an electrical switch that is electrically coupled to the conductor; and one or more modules communicatively coupled to the electrical switch and the clock, the one or more modules configured to; cause the electrical switch to place the conductor in a grounded state when disposed proximally to the touchscreen device to emulate a touch input; record a point in time from the clock at which the causing occurred; and compute a latency of the touchscreen device to detect the touch input by comparing a point in time at which the touch input was detected by the touchscreen device with the recorded point in time. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method implemented by one or more computing devices, the method comprising:
measuring a time delay of a touchscreen device to evaluate lack of a touch input by; placing a conductor that is disposed proximal to the touchscreen device in a ungrounded state from a grounded state; receiving a report from the touchscreen device indicating a point in time at which the lack of the touch input was detected by the touchscreen device; and computing the time delay by comparing the point in time at which the lack of the touch input was detected by the touchscreen device with a point in time at which the conductor was placed in the ungrounded state. - View Dependent Claims (18, 19, 20)
Specification