Time synchronization method for head-mounted device and handle in VR system

Abstract

The invention provides a time synchronization method for a head-mounted device and a handle in a VR system, and the method comprises the steps: carrying out the sampling through a handle inertial measurement unit to obtain sampling data, recording a first timestamp at a sampling moment when the sampling data is obtained, and transmitting the sampling data and the first timestamp to a handle single-chip microcomputer, so that the single-chip microcomputer carries the sampling data to send an interrupt request to the head-mounted main chip, records a second timestamp at the moment when the interrupt request is sent, then records a third timestamp at the moment when the head-mounted main chip receives the interrupt request, based on the third timestamp and the second timestamp, and performs time compensation on the first timestamp according to the time difference value, so that the handle inertial measurement unit and the head-mounted device share the same time standard to complete time synchronization.

Description

technical field [0001] The present invention relates to the technical field of virtual reality, and more specifically, relates to a time synchronization method and system for headsets and handles in a VR system. Background technique [0002] Due to the advancement of technology and the diversified development of market demand, virtual reality systems are becoming more and more common and applied in many fields, such as computer games, health and safety, industry and education and training. To give a few examples, mixed virtual reality systems are being integrated into mobile communication devices, game consoles, personal computers, movie theaters, theme parks, university laboratories, student classrooms, hospital exercise gyms and other corners of life. [0003] For a VR device, if the scene in the VR device display is to change in real time with the movement of the person's head, it is necessary to know the orientation of the head. The monitor needs to show you the sky in ...

AI Technical Summary

Problems solved by technology

[0007] In view of the above problems, the purpose of the present invention is to provide a method and system for synchronizing the time of the headset and the handle in the VR system, so as to solve the problem of the head of the existing VR system. The 6dof and the 6dof of the hand need to be combined to obtain the overall 6dof posture. If the time of the two IMUs is not synchronized, the movement of the head and the hand will be inconsistent, or there will be a large delay. The packet loss of the hand IMU will make the data incoherent. The problem of poor user experience due to stuttering or loss of position

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