Head Mounted Display Device And Control Method Thereof

• US 20180314069A1
• Filed: 12/01/2017
• Published: 11/01/2018
• Est. Priority Date: 04/28/2017
• Status: Abandoned Application

• Current Assignee: StarVR Corporation (Acer, Inc.)
• Original Assignee: Acer, Inc.
• Inventors: HUANG, Yu-Chun, CHEN, Chih-Cheng
• Application Number:
  US15/828,657
• Publication Number:
  US 20180314069A1
• Time in Patent Office: Days
• CPC Class Codes: G02B 2027/014 comprising information/image processing systems
• CPC Class Codes: G02B 2027/0187 slaved to motion of at least a part of the body of the user, e.g. head, eye
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G02B 27/0179 Display position adjusting means not related to the information to be displayed

Abstract

A head mounted display (HMD) device includes a clock generator, a positioning system, and an inertial measurement unit (IMU). The clock generator is configured to generate a clock signal. The positioning system is configured to detect coordinate information of the user. The IMU is configured to detect rotation angle information of the user. The positioning system and the IMU add a timestamp to the coordinate information and the rotation angle information according to the clock signal.

Claims

1. A head-mounted display (HMD) device, comprising:

a clock generator, generating a clock signal;

a positioning system, detecting coordinate information of a user; and

an inertial measurement unit (IMU), detecting rotation angle information of the user;

wherein the positioning system and the IMU add a timestamp to the coordinate information and the rotation angle information according to the clock signal;

wherein the coordinate information comprises an X-axis coordinate, a Y-axis coordinate, and a Z-axis coordinate of the user, and wherein the rotation angle information comprises a zenith angle rotation and an azimuth angle rotation of the user.

2. The head-mounted display device as claimed in claim 1, wherein the coordinate information and the rotation angle information are transmitted to a computing device.

3. The head-mounted display device as claimed in claim 2, wherein the computing device uses an extended Kalman filter (EKF) to process the coordinate information and the rotation angle information.

4. The head-mounted display device as claimed in claim 3, wherein the computing device generates virtual reality (VR) image information according to the coordinate information and the rotation angle information which have the same timestamp.

5. A control method for a head-mounted display (HMD) device, comprising the steps of:

generating a clock signal;

detecting coordinate information of a user;

detecting rotation angle information of the user; and

adding a timestamp to the coordinate information and the rotation angle information according to the clock signal;

wherein the coordinate information comprises an X-axis coordinate, a Y-axis coordinate, and a Z-axis coordinate of the user, and wherein the rotation angle information comprises a zenith angle rotation and an azimuth angle rotation of the user.

6. The control method as claimed in claim 5, further comprising:

transmitting the coordinate information and the rotation angle information to a computing device.

7. The control method as claimed in claim 6, further comprising:

using an extended Kalman filter (EKF) to process the coordinate information and the rotation angle information.

8. The control method as claimed in claim 7, further comprising:

generating virtual reality (VR) image information according to the coordinate information and the rotation angle information which have the same timestamp.

9. A non-transitory computer-readable medium storing a computer program product operable to cause a head-mounted display (HMD) device to perform operations comprising:

generating a clock signal;

detecting coordinate information of a user;

detecting rotation angle information of the user; and

adding a timestamp to the coordinate information and the rotation angle information according to the clock signal;

wherein the coordinate information comprises an X-axis coordinate, a Y-axis coordinate, and a Z-axis coordinate of the user, and wherein the rotation angle information comprises a zenith angle rotation and an azimuth angle rotation of the user.