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How are the data of time stamp and frame measured?


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Dear HTC support team,

 

In relation to the time information of eye tracking device, would it be possible for you to share the eye tracker latency of HTC VIVE Pro Eye tracking device?

Of the parameters that can be measured by VIVE Pro Eye, we have "timestamp" as described in the manual. Could you please explain what exactly this "timestamp" means? Specifically, I would like to know whether "timestamp" is the time exactly when eye movements are measured by the sensor. Or is the "timestamp" the time when the data of eye movements are stored on a laptop or an application? Or anything else?

 

Thank you very much for the information you could provide.

Best regards,
imarin18

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@Corvus @Daniel_Y @zzy

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Dear @alwyuyang

No I have not got any response to the question. However, I suppose that the following document from Tobii might help us understand, though I am not sure about the mechanism of HTC VIVE Pro Eye.

https://www.tobiipro.com/siteassets/tobii-pro/learn-and-support/design/eye-tracker-timing-performance/tobii-eye-tracking-timing.pdf?v=1.0

Best regards,

imarin18

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On 2/18/2020 at 5:04 PM, imarin18 said:

Dear @alwyuyang

No I have not got any response to the question. However, I suppose that the following document from Tobii might help us understand, though I am not sure about the mechanism of HTC VIVE Pro Eye.

https://www.tobiipro.com/siteassets/tobii-pro/learn-and-support/design/eye-tracker-timing-performance/tobii-eye-tracking-timing.pdf?v=1.0

Best regards,

imarin18

Thank you. It works for me. 

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