CN-121996060-A - Synchronization system and synchronization method for coordinate system

CN121996060ACN 121996060 ACN121996060 ACN 121996060ACN-121996060-A

Abstract

The invention provides a synchronization system and a synchronization method of a coordinate system. The synchronization method includes communicatively connecting a first head mounted display device to a first mobile device, wherein the first mobile device includes a first light source, wherein the first mobile device corresponds to a first coordinate system with the first head mounted display device, outputting, by the first light source, a first light based on a first pattern, recognizing, by a second head mounted display device, the first mobile device according to the first light, wherein the second head mounted display device corresponds to a second coordinate system, and synchronizing, by the second head mounted display device, the second coordinate system with the first coordinate system using the first mobile device as a reference point.

Inventors

XU YOUHUI
XIE ZHENGHAN
Zhou Sugang

Assignees

宏达国际电子股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250522
Priority Date: 20241105

Claims (10)

1. A synchronization system for a coordinate system, comprising: A first mobile device comprising a first light source; A first head mounted display device communicatively coupled to the first mobile device, wherein the first mobile device and the first head mounted display device correspond to a first coordinate system, and A second head-mounted display device corresponding to a second coordinate system, wherein The first light source outputs a first light based on a first mode, in which The second head-mounted display device recognizes the first mobile device according to the first light, and uses the first mobile device as a reference point to synchronize the second coordinate system with the first coordinate system.
2. The synchronization system of claim 1, further comprising: a second mobile device comprising a second light source, wherein the second light source outputs a second light based on a second mode different from the first mode, wherein The second head-mounted display device recognizes the first mobile device and the second mobile device according to the first light and the second light respectively to generate recognition results, wherein The second head-mounted display device selects the first mobile device from the first mobile device and the second mobile device according to the identification result to serve as the reference point.
3. The synchronization system of claim 1, wherein In response to the first light source ceasing to output the first light based on the first mode, the second head mounted display device ceases to synchronize the second coordinate system with the first coordinate system.
4. The synchronization system of claim 1, wherein The second head mounted display device periodically synchronizes the second coordinate system with the first coordinate system according to the first light.
5. The synchronization system of claim 1, wherein The second head mounted display device is communicatively connected to at least one of the first head mounted display device and the first mobile device and the first coordinate system is obtained from the at least one of the first head mounted display device and the first mobile device.
6. The synchronization system of claim 1, wherein The second head-mounted display device performs content sharing with the first head-mounted display device during a period in which the first light source outputs the first light based on the first mode.
7. The synchronization system of claim 6, wherein The second head mounted display device performs the content sharing with the first head mounted display device through a cloud server.
8. The synchronization system of claim 1, wherein the first light source comprises an infrared light emitting diode.
9. A method for synchronizing a coordinate system, comprising: Communicatively connecting a first head mounted display device to a first mobile device, wherein the first mobile device comprises a first light source, wherein the first mobile device and the first head mounted display device correspond to a first coordinate system; outputting, by the first light source, first light based on a first mode; Identifying, by a second head mounted display device, the first mobile device according to the first light, wherein the second head mounted display device corresponds to a second coordinate system, and The first mobile device is used as a reference point by the second head mounted display device to synchronize the second coordinate system with the first coordinate system.
10. The synchronization method of claim 9, further comprising: Outputting, by a second light source of a second mobile device, second light based on a second mode different from the first mode; identifying, by the second head-mounted display device, the first mobile device and the second mobile device according to the first light and the second light, respectively, to generate an identification result, and And selecting the first mobile device from the first mobile device and the second mobile device by the second head-mounted display device according to the identification result to serve as the reference point.

Description

Synchronization system and synchronization method for coordinate system Technical Field The present invention relates to extended reality (XR) technology, and in particular, to a synchronization system and synchronization method for a coordinate system. Background In conventional XR systems, if there are multiple XR devices that need to share map information, the XR system needs to establish a reliable communication channel between the XR devices. When the XR system's environment of application lacks a reliable means of communication, the XR device will not be able to share map information. Alternatively, the XR system may be located by a marker in the field. Taking ArUco marks as an example, different ArUco marks may have different shapes or sizes. The user needs to consider the ambient light source to set ArUco the mark in the proper position. If the positioning is to be performed by detecting ArUco marks, the user needs to input the relevant information of the position of ArUco marks into each XR device in advance. Therefore, the manner in which the ArUco marks are used for positioning is very inconvenient for the user. Disclosure of Invention The invention provides a synchronization system and a synchronization method of a coordinate system, which can automatically synchronize the coordinate system of a head-mounted display (HMD). The invention provides a synchronization system of a coordinate system, which comprises a first mobile device, a first head-mounted display device and a second head-mounted display device. The first mobile device includes a first light source. The first head mounted display device is communicatively coupled to the first mobile device, wherein the first mobile device and the first head mounted display device correspond to a first coordinate system. The second head-mounted display device corresponds to a second coordinate system, wherein the first light source outputs first light based on the first mode, wherein the second head-mounted display device recognizes the first mobile device according to the first light, and uses the first mobile device as a reference point to synchronize the second coordinate system with the first coordinate system. In an embodiment of the invention, the synchronization system further includes a second mobile device. The second mobile device comprises a second light source, wherein the second light source outputs second light based on a second mode different from the first mode, the second head-mounted display device respectively identifies the first mobile device and the second mobile device according to the first light and the second light to generate identification results, and the second head-mounted display device selects the first mobile device from the first mobile device and the second mobile device to serve as a reference point according to the identification results. In an embodiment of the invention, the second head mounted display device stops synchronizing the second coordinate system with the first coordinate system in response to the first light source stopping outputting the first light based on the first mode. In an embodiment of the invention, the second head-mounted display device periodically synchronizes the second coordinate system with the first coordinate system according to the first light. In an embodiment of the present invention, the second head-mounted display device is communicatively connected to at least one of the first head-mounted display device and the first mobile device, and the first coordinate system is acquired from at least one of the first head-mounted display device and the first mobile device. In an embodiment of the present invention, the second head-mounted display device performs content sharing with the first head-mounted display device during a period in which the first light source outputs the first light based on the first mode. In an embodiment of the present invention, the second head-mounted display device and the first head-mounted display device perform content sharing through a cloud server. In an embodiment of the invention, the first light source includes an infrared light emitting diode. A synchronization method of a coordinate system of the invention comprises the steps of communicatively connecting a first head-mounted display device to a first mobile device, wherein the first mobile device comprises a first light source, the first mobile device and the first head-mounted display device correspond to a first coordinate system, outputting first light based on a first mode by the first light source, identifying the first mobile device according to the first light by a second head-mounted display device, the second head-mounted display device corresponds to a second coordinate system, and taking the first mobile device as a reference point by the second head-mounted display device to synchronize the second coordinate system and the first coordinate system. In an embodiment of the invention, t