TW201839458A - Virtual reality system and method - Google Patents

Abstract

A virtual reality system includes at least two scanning laser generators and a virtual reality image generator. Each of the scanning laser generators includes a moving device and is capable of generating a scanning laser in a space to form a lighthouse. The virtual reality image generator includes a plurality of sensors and a processor, wherein the processor is capable of determining the position of the virtual reality image generator in the lighthouse according to the scanning lasers received by the sensors, and controlling the moving devices to move the scanning laser generators according to the position. Therefore, the virtual reality image generator can be kept in the lighthouse and high accuracy of the sensors for the scanning lasers can be maintained.

Description

   Virtual reality system and method   

The present invention relates to a virtual reality system, and in particular, the present invention relates to a virtual reality system that can expand a virtual reality space and maintain the accuracy of a sensor.

Virtual reality (VR) is short for virtual technology, also called virtual environment. It uses computer simulation to generate a three-dimensional virtual world. It provides users with simulations about vision and other senses, so that users feel as if they are immersed in reality. You can observe things in three dimensions in a timely and unlimited manner. When the user moves the position, the computer can immediately perform complex calculations to return an accurate three-dimensional world image to create a sense of presence. This technology integrates the latest developments in computer graphics, computer simulation, artificial intelligence, induction, display and parallel processing of networks. It is a high-tech simulation system generated with the assistance of computer technology.

There are currently several different virtual reality systems available. These virtual reality systems usually have head-mounted virtual reality image generators, motion controllers, and motion or position detectors. Please refer to FIG. 1. FIG. 1 is a schematic diagram showing a prior art virtual reality system (HTC Vive). This system can be run on a computer platform. Its virtual reality space is composed of at least two scanning laser generators. 10 Generated, and the user may wear the virtual reality image generator 12 and hold the motion controller 14 to move in the virtual reality space. In detail, the two scanning laser generators 10 can be oppositely arranged and generate scanning laser light sources respectively, and the overlapping range of the scanning laser light sources in space forms a lighthouse. The head-mounted virtual reality image generator 12 and the motion controller 14 are respectively provided with a plurality of light sensors at different positions. When they are in the light chamber, the light sensors can be used to detect the scanning laser light source. . Based on the time difference between the scanning laser light source detected by each light sensor on the virtual reality image generator 12 and the motion controller 14, the calculation or processing module on the computer or the virtual reality image generator 12 can calculate The position, motion, and posture of the user wearing the virtual reality image generator 12 and the motion controller 14 are generated, and the corresponding virtual reality image can be further generated according to the user's position, motion, and posture.

The scanning laser light source of the scanning laser generator 10 usually has an effective distance, and the light sensor can receive good sensing accuracy within this effective distance. Generally speaking, two opposing scanning laser generators 10 can be separated by 5 to 10 meters, so as to form a light room with a diagonal distance of 5 to 10 meters, which is suitable for general family spaces. size. However, when the user has a larger use space, the light chamber cannot be extended outward based on the limitation of the sensing accuracy of the light sensor, so that the user can only experience the virtual reality in a limited space and cannot obtain it. A more complete experience.

Therefore, it is necessary to develop a virtual reality system capable of extending the virtual reality space according to the size of the used space to solve the above problems.

One category of the present invention is to provide a virtual reality system. According to a specific embodiment of the present invention, the virtual reality system includes at least two scanning laser generators and a virtual reality image generator. The scanning laser generators may each include a mobile device, and may separately emit scanning laser light sources to form a light chamber in the space. The virtual reality image generator further includes a plurality of light sensors and a processing module connected to the light sensor, wherein the light sensor can be used to receive the scanning laser light source, and the processing module can be based on the light sensors received. The obtained scanning laser light source determines the first position of the virtual reality image generator in the light chamber, and controls the mobile device to drive the scanning laser generator to move according to the first position. With this, even if the virtual reality image generator moves, its position can be maintained in the light room to expand the range of the virtual reality image.

According to another specific embodiment of the present invention, when the processing module determines that the distance between the first position of the virtual reality image generator and the boundary of the light chamber is less than a threshold value, the processing module may send a control signal to control the mobile device. Drive the scanning laser generator to move.

According to another specific embodiment of the present invention, the processing module may send a control signal to control the mobile device to cause the scanning laser generator to move to a distance between the first position and a boundary of the light chamber greater than the threshold.

According to another specific embodiment of the present invention, the processing module can send a control signal to control the mobile device to cause the scanning laser generator to move to a preset area in the light chamber.

According to another specific embodiment of the present invention, the processing module controls the virtual reality image generator to generate a virtual reality according to the scanned laser light source and the first position of the virtual reality image generator received by the light sensor. Image, wherein the processing module may further include a calibration program, and according to the calibration program and the mobile device to drive the scanning laser generator to move the distance to correct the virtual reality image generator at a second position in the virtual reality image .

According to another embodiment of the present invention, the virtual reality image generator further includes a head mounted display and a controller, and the processing module can control the head mounted display to generate a virtual reality image. The controller may be connected to a head-mounted display, and the light sensor may be disposed on the head-mounted display and the controller, respectively.

Another aspect of the present invention is to provide a virtual reality method. According to a specific embodiment of the present invention, the virtual reality method may include the following steps: at least two scanning laser generators may respectively emit scanning laser light sources to form a light chamber in the space; the virtual reality image generator uses its The plurality of light sensors on the scanning laser are received; the processing module of the virtual reality image generator controls the virtual reality image generator to generate the virtual reality according to the scanning laser received by the light sensor light sensor. And determine the first position of the virtual reality image generator in the light room; the processing module controls the mobile device on the scanning laser generator according to the first position of the virtual reality image generator in the light room, Make it move the scanning laser generator. With this, even if the virtual reality image generator moves, its position can be maintained in the light room to expand the range of the virtual reality image.

According to another embodiment of the present invention, the step of the processing module in the virtual reality method controlling the mobile device to drive the scanning laser generator to move according to the first position of the virtual reality image generator in the light room further includes: The processing module determines whether the distance between the first position of the virtual reality image generator and the boundary of the light chamber is less than a threshold; and if it is determined that the distance is less than the threshold, the processing module controls the mobile device to drive the scanning laser generator to move to its first position. The distance between a position and the boundary of the light chamber is greater than a threshold.

According to another embodiment of the present invention, the step of the processing module in the virtual reality method controlling the mobile device to drive the scanning laser generator to move according to the first position of the virtual reality image generator in the light room further includes: The processing module determines whether the first position of the virtual reality image generator is outside a preset area in the light room; and if the determination result is yes, the processing module controls the mobile device to drive the scanning laser generator to move to it. The first position is located in the preset area.

According to another specific embodiment of the present invention, the virtual reality method further includes: the processing module corrects the second virtual reality image generator located in the virtual reality image according to the distance moved by the scanning device to drive the scanning laser generator. position.

The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the accompanying drawings.

10‧‧‧scanning laser generator

12‧‧‧Virtual Reality Image Generator

14‧‧‧ Motion Controller

2‧‧‧Virtual Reality System

20‧‧‧scanning laser generator

22‧‧‧Virtual Reality Image Generator

200‧‧‧ mobile device

220‧‧‧Head-mounted display

222‧‧‧Controller

2200‧‧‧Processing Module

S‧‧‧scanning laser light source

R‧‧‧ Light Room

V‧‧‧Threshold

P‧‧‧ Preset area

S30 ~ S38‧‧‧Process steps

S360 ~ S366‧‧‧Process steps

FIG. 1 is a schematic diagram illustrating a prior art virtual reality system (HTC Vive).

FIG. 2 is a schematic diagram of a virtual reality system according to a specific embodiment of the present invention.

FIG. 3 is a schematic diagram illustrating a virtual reality system according to a specific embodiment of the present invention to determine the relative relationship between the first position and the light chamber, and to control the movement of the scanning laser generator according to the relationship.

FIG. 4 is a schematic diagram illustrating a virtual reality system according to another embodiment of the present invention to judge the relative relationship between the first position and the light chamber, and control the movement of the scanning laser generator according to the relationship.

FIG. 5 is a flowchart illustrating steps of a virtual reality method according to a specific embodiment of the present invention.

FIG. 6 is a flowchart illustrating steps of a virtual reality method according to another embodiment of the present invention.

FIG. 7 is a flowchart illustrating steps of a virtual reality method according to another embodiment of the present invention.

Please refer to FIG. 2, which is a schematic diagram illustrating a virtual reality system 2 according to a specific embodiment of the present invention. As shown in FIG. 2, the virtual reality system 2 includes at least two scanning laser generators 20 and a virtual reality image generator 22, where the scanning laser generator 20 can emit a scanning laser light source S and at least two The scanning laser light source S emitted by the scanning laser generator 20 can form a light chamber R in the space. In practice, two scanning laser generators facing each other can be used to generate a scanning laser light source, and the scanning laser light sources are staggered to form an optical chamber. Therefore, the two scanning laser generators are respectively located on the diagonal of one of the optical chambers. On two vertices. The virtual reality image generator 22 may include a head-mounted display 220 and a controller 222. The former may be worn on the head by the user to provide the user with the virtual reality image, and the controller 222 may be held by the user. The surface of the head-mounted display 220 and the controller 222 may be provided with a plurality of light sensors. When the user wears the head-mounted display 220 and the controller 222 and is located in the light room R, the light sensor may be used to Receive the scanning laser light source S.

The head-mounted display 220 has a processing module 2200 for connecting various light sensors and the controller 222 on the head-mounted display 220, so as to obtain the light sensors sensed by the light sensors of the head-mounted display 220. The time of scanning the laser light source S is obtained from the controller 222, and the time of scanning the laser light source S detected by each light sensor on the controller 222 is obtained from the controller 222. According to the scanning time of the laser light source S sensed by each light sensor, the processing module 2200 can calculate that the virtual reality image generator 22 is located at the first position in the light chamber R, that is, a headgear is worn The users of the portable display 220 and the controller 222 are located at the first position in the light chamber R. At the same time, the processing module 2200 can also calculate the user's posture based on the scanning time of the laser light source S detected by each light sensor. . The processing module 2200 controls the head mounted display 220 to generate and provide a virtual reality image to the user according to the calculated first position and posture of the user. In this embodiment, the processing module 2200 is located in the head-mounted display 220 and communicates with the controller 222 through wireless transmission technology to receive data from the light sensor from the controller 222. However, in practice, it is not Limited to the connection architecture described above. For example, the processing module can also be set in an external electronic processing device, such as a computer, and receive data from its light sensor from the head-mounted display and controller through wired or wireless transmission technology.

In this embodiment, each scanning laser generator 20 further includes a mobile device 200, such as a motor-driven tire or track set. The mobile device 200 can also communicate with the processing module 2200 through wireless transmission technology, and It is controlled by the processing module 220 to drive the scanning laser generator 20 to move. The processing module 2200 can control the moving devices 200 of the scanning laser generators 20 to advance in the same direction and the same speed. Therefore, the light chamber R can move in one direction while maintaining the original shape.

When the user wears the head-mounted display 220 and the controller 222 and performs various actions in the light room R, the processing module 2200 can determine the posture and the first position of the user, so as to provide the user's virtual reality image, so that The user can interact in the virtual reality image, and the user is located in a second position in the virtual reality image. Generally, the second position has a corresponding relationship with the first position. In practice, the closer the relative position between the light sensor and the scanning laser generator is, the higher the accuracy of determining posture and position is, so the accuracy of the virtual reality image is also higher. In the case where multiple scanning laser generators form a light chamber, the light sensor has a high accuracy in a specific area of the light chamber, such as the center of the light chamber; relatively, when the light sensor approaches The sensing accuracy of the edge of the light chamber will be reduced, resulting in distortion of the virtual reality image or inability to match the user's posture or movement.

In this specific embodiment, the processing module 2200 can control each mobile device 200 to drive the scanning laser generator 20 to move, so that the light sensor maintains high accuracy. Specifically, the processing module 2200 determines the relative relationship between the first position and the light room R according to the calculated virtual reality image generator 22 and the first position of the user in the light room R, and according to the relationship The movement of the scanning laser generator 20 is controlled.

Please refer to FIG. 2 and FIG. 3 together. FIG. 3 shows the virtual reality system 2 of FIG. 2 to determine the relative relationship between the first position and the light chamber R, and control the movement of the scanning laser generator 20 according to this relationship. schematic diagram. As shown in FIG. 3, a threshold V for a distance can be set inwardly of the boundary of the light chamber R, and this threshold V can be stored in the processing module in practice. The user can wear the virtual reality image generator 22 to move in the light room R. When the distance between the first position and the boundary of the light room R is less than the threshold V, the processing module can send a control signal to the scanning laser to occur The moving device 200 of the device 20 enables the moving device 200 to drive the scanning laser generator 20 to move, so that the light chamber R is relatively moved until the distance between the first position and the boundary of the light chamber R is greater than the threshold V. In this specific embodiment, the distance between the virtual reality image generator 22 and the right edge of the light chamber R is less than the threshold V, so the processing module can send a control signal to cause the mobile device 200 to drive the scanning laser generator 20 to the right to The distance between the virtual reality image generator 22 and the right boundary of the light chamber R is greater than the threshold V. In this way, the light room R can be matched with the user's movement to substantially increase the range of the virtual reality and maintain the accuracy of the light sensor.

In addition, please refer to FIG. 2 and FIG. 4 together. FIG. 4 shows the virtual reality system 2 according to another embodiment of the present invention to determine the relative relationship between the first position and the light room R, and control based on this relationship. A schematic diagram of the movement of the scanning laser generator 20. As shown in FIG. 4, this specific embodiment is different from the previous specific embodiment in that this specific embodiment sets a preset area P in the light room R, and this preset area P can be stored in the processing module in practice. Medium, and can be an area with high accuracy of the light sensor. The user can wear the head-mounted display 220 and the controller 222 to move in the light room R. When the distance between the first position and the boundary of the light room R is less than the threshold V, the processing module can send a control signal to the scanning mine. The moving device 200 of the radiation generator 20 enables the moving device 200 to drive the scanning laser generator 20 to move, so that the light chamber R is relatively moved until the first position is located in the preset area P. In this embodiment, the preset area P is exceeded above the virtual reality image generator 22, so the processing module can send a control signal to cause the mobile device 200 to drive the scanning laser generator 20 to move upward to the virtual reality image generator. 22 is located in the preset area P again. In this way, the light room R can be matched with the user's movement to substantially increase the range of the virtual reality and maintain the accuracy of the light sensor. In addition, according to another specific embodiment of the present invention, when the processing module determines that the first position is not within the preset area P, it sends a control signal to cause the light chamber R to move relatively until the first position is located in the preset area. In P, the virtual reality image generator 22 is constantly maintained in a preset region P with high accuracy of the light sensor.

In addition, the processing module may also store the threshold V and the preset region P of the above specific embodiment, and use the threshold V and the preset region P to determine the relative relationship between the first position and the light chamber R at the same time, so as to be based on this relationship. Controls the movement of the scanning laser generator. According to another specific embodiment, the processing module may also first determine whether the distance between the first position and the boundary of the light chamber R is less than the threshold V. When the distance is less than the threshold V, the processing module may send a control signal to cause the mobile device 200 The scanning laser generator 20 is driven to move into the preset area P.

As mentioned above, the processing module can generate a virtual reality image according to the virtual reality image generator and the first position of the user, and the user is located at the second position, the first position and the second position in the virtual reality image. There is a corresponding relationship between them. However, in the above specific embodiment, since the light room R is also moved, the first position calculated after the light room R is moved will be different from the position of the user after moving in the real space, which may cause The user drifts at the second position in the virtual reality image. In another specific embodiment, the processing module may further include a correction program to correct the first position. In detail, the movement of the light chamber R, that is, the movement of the scanning laser generator 20 is relative to the user and the virtual reality image generator 22, so only the calculated first position must be deducted from the scan in the calibration procedure. The actual first position can be obtained by moving direction and distance of the laser generator 20.

Please refer to FIG. 5 and FIG. 2 together. FIG. 5 is a flowchart showing the steps of a virtual reality method according to a specific embodiment of the present invention. The method of FIG. 5 is used in a virtual reality system. Please refer to Figure 2 for the architecture, so it will not be repeated here. As shown in FIG. 5, the virtual reality method of this embodiment includes the following steps: At step S30, at least two scanning laser generators 20 respectively emit scanning laser light sources S to form a light chamber R in the space; S32. The virtual reality image generator 22 receives the scanning laser light source S with a plurality of light sensors provided thereon. In step S34, the processing module 2200 of the virtual reality image generator 2 receives the scanned laser light source S according to the light sensor. The obtained scanning laser light source S determines that the virtual reality image generator 2 is located at a first position in the light room R, and generates a virtual reality image based on the first position. In the virtual reality image, the virtual reality image generator 2 is located at a second position corresponding to the first position; in step S36, the processing module 2200 controls the mobile device 200 of the scanning laser generator 20 to move it according to the first position; and, in step S38, the processing module The group 2200 corrects the second position of the virtual reality image generator 22 in the virtual reality image according to the distance moved by the scanning laser generator 20.

In this embodiment, the virtual reality image generator 22 in step S34 may include a head-mounted display 220 and a controller 222 for a user to wear or hold, and the light sensor is scattered on the head-mounted display. 220 and the surface of the controller 222. According to the time when each light sensor receives the scanning laser light source S, the processing module 2200 can determine the first position of the user in the light chamber R and the current posture of the user, and then control the head mounted display 220 to provide the user Virtual reality images and enable them to interact with virtual reality images.

In step S36, the processing module 2200 may control the scanning laser generator to move according to the relative relationship between the first position and the light chamber R. However, after the scanning laser generator is moved, the position of the light chamber R is changed so that the first position is different from the first position before the light chamber R is moved, which causes the second position to drift. Therefore, it is necessary to correct the The position is not offset. In step S38, the actual first position can be obtained by subtracting the distance moved by the scanning laser generator 20 from the calculated first position, and the second position in the virtual reality image generated according to the actual first position is Corresponds to the actual moving distance of the user without drift.

The above step S36 may determine whether to move the scanning laser generator 20 and the moving direction and distance according to the relative relationship between the first position and the light chamber R in practice. Please refer to FIG. 6. FIG. 6 is a flowchart illustrating steps of a virtual reality method according to another embodiment of the present invention. As shown in FIG. 6, the virtual reality method of this embodiment after performing step S34 further includes: step S360, the processing module 2200 determines whether the distance between the first position and the boundary of the light chamber R is less than the threshold V; And, in step S362, when it is determined that the distance between the first position and the boundary of the light chamber R is less than the threshold V, the processing module 2200 controls the scanning laser generator 20 to move to the distance between the first position and the boundary of the light chamber R. Greater than threshold V. The other steps of the method of this specific embodiment are the same as the corresponding steps of the previous specific embodiment, so they are not repeated here. The threshold V can be stored in the processing module 2200 in practice, and its value can be set by the user. The processing module 2200 can make all the control scanning laser generators 20 move in the same direction and the same speed, so that the light chamber R is not deformed during the movement, so as to avoid affecting the first position in the light chamber R. Calculation and judgment.

In addition to the above-mentioned threshold V, the movement of the scanning laser generator can also be controlled according to different conditions in practice. Please refer to FIG. 7, which is a flowchart illustrating steps of a virtual reality method according to another embodiment of the present invention. As shown in FIG. 7, the virtual reality method of this embodiment after performing step S34 further includes: step S364, the processing module 2200 determines whether the first position is outside a preset area in the light room R; and In step S366, when it is determined that the first position is outside the preset area, the processing module 2200 controls the scanning laser generator 20 to move to the first position within the preset area. The other steps of the method of this specific embodiment are the same as the corresponding steps of the previous specific embodiment, so they are not repeated here. The preset position can be stored in the processing module 2200 in practice, and its size and position can be set by the user. If the preset position is set to a position with high accuracy of the light sensor, the method of this specific embodiment can continuously maintain the accuracy of the virtual reality image.

In addition, according to another specific embodiment, after step S34 of the above method, the processing module 2200 may also first perform a step of determining whether the distance between the first position and the boundary of the light chamber R is less than the threshold V. When it is determined that the distance is less than the threshold V, the processing module sends a control signal to cause the mobile device 200 to drive the scanning laser generator 20 to move to the preset area P.

In summary, the virtual reality system and virtual reality method of the present invention can effectively extend the maximum space of a virtual reality image when there is a large available space, so that users do not have to limit their space due to the size of the light room. mobile. In addition, through the calibration process, users can not feel the discontinuous movement of the virtual reality image. As a result, users can obtain a more complete virtual reality experience.

With the above detailed description of the preferred embodiments, it is hoped that the features and spirit of the present invention can be more clearly described, and the scope of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, the intention is to cover various changes and equivalent arrangements within the scope of the patents to be applied for in the present invention.

Claims (10)

    A virtual reality system includes: at least two scanning laser generators, each of which includes a mobile device, and the at least two scanning laser generators each emit a scanning laser light source to form a light in a space. Room; and a virtual reality image generator, including a plurality of light sensors and a processing module connected to the light sensors, the processing module receives the at least two scanning lasers according to the light sensors The scanning laser light source emitted by the generator is used to determine a first position of the virtual reality image generator in the light chamber, and the mobile devices are controlled to drive the at least two scanning laser generators according to the first position. Make a move.         The virtual reality system according to item 1 of the scope of patent application, wherein when the processing module determines that the distance between the first position of the virtual reality image generator and the boundary of the light chamber is less than a threshold, the The processing module sends a control signal to control the mobile devices to drive the at least two scanning laser generators to move.         The virtual reality system described in item 2 of the scope of patent application, wherein the processing module controls the mobile devices to drive the at least two scanning laser generators to move to the first position of the virtual reality image generator and the virtual reality image generator. The distance between the boundaries of the light chamber is greater than the threshold.         The virtual reality system described in item 2 of the scope of patent application, wherein the processing module controls the mobile devices to drive the at least two scanning laser generators to move to the first position in a preset area in the light chamber .         According to the virtual reality system described in item 1 of the patent application scope, wherein the processing module controls the scanning laser light source and the first position according to the light sensor receiving the at least two scanning laser generators. The virtual reality image generator generates a virtual reality image, and the processing module further includes a calibration program. The processing module drives the at least two scanning laser generators to move according to the calibration program and the mobile devices. The virtual reality image generator is located at a second position in the virtual reality image.         The virtual reality system described in item 5 of the scope of patent application, wherein the virtual reality image generator further includes a head-mounted display and a controller, and the processing module controls the head-mounted display to generate the virtual reality. Image, the controller is connected to the head-mounted display, and the light sensors are respectively disposed on the head-mounted display and the controller.         A virtual reality method includes the following steps: at least two scanning laser generators respectively emit a scanning laser light source to form a light chamber in a space; a virtual reality image generator is provided with a plurality of lights arranged thereon; The sensor receives the scanning laser light source; one processing module of the virtual reality image generator determines that the virtual reality image generator is in the light room according to the scanning laser light source received by the light sensors. A first position, and controlling the virtual reality image generator to generate a virtual reality image according to the first position; and the processing module is respectively disposed on the at least two scanning laser generators according to the first position control A moving device drives the at least two scanning laser generators to move.         The virtual reality method described in item 7 of the scope of patent application, wherein the processing module controls the mobile devices to drive the at least two scanning laser generators to move according to the first position, and further includes the following steps: the The processing module determines whether the distance between the first position and the boundary of the light chamber is less than a threshold; and if it is determined that the distance between the first position and the boundary of the light chamber is less than the threshold, the processing module controls such The moving device drives the at least two scanning laser generators to move to a distance between the first position and a boundary of the light chamber greater than the threshold.         The virtual reality method described in item 7 of the scope of patent application, wherein the processing module controls the mobile devices to drive the at least two scanning laser generators to move according to the first position, and further includes the following steps: the The processing module determines whether the first position is outside a preset area in the light room; and if it is determined that the first position is outside the preset area in the light room, the processing module controls the The moving device drives the at least two scanning laser generators to move to the first position within the preset area in the light chamber.         The virtual reality method described in item 7 of the scope of patent application, further comprising the following steps: the processing module corrects the location of the virtual reality image generator based on the distance moved by the at least two scanning laser generators driven by the mobile devices A second position in the virtual reality image.