Driving circuit for head-worn display device, and virtual reality display device

Patent metadata

Field	Value
Publication number	US-11335304-B2
Application number	US-201916699845-A
Country	US
Kind code	B2
Filing date	Dec 2, 2019
Priority date	Jan 2, 2019
Publication date	May 17, 2022
Grant date	May 17, 2022

Abstract

A driving circuit for head-worn display device, and a virtual reality display device, and the driving circuit includes: a display panel driving circuit, the display panel driving circuit comprises a sensor circuit, and a data processing circuit; the sensor circuit is configured to generate a posture information signal corresponding to a rotation direction of the display panel; and the data processing circuit is configured to receive the posture information signal and a display data signal for a display panel, and to control the display panel according to the posture information signal and the display data signal to display an image corresponding to a rotation direction.

First claim

The invention claimed is:

1. A driving circuit for head-worn display device, comprising: a display panel driving circuit of a display panel, wherein the display panel driving circuit comprises a sensor circuit, and a data processing circuit;
the sensor circuit is configured to generate a posture information signal corresponding to a rotation direction of the display panel; and
the data processing circuit is configured to receive the posture information signal and a display data signal for the display panel, and to control the display panel according to the posture information signal and the display data signal to display an image corresponding to the rotation direction;
wherein the data processing circuit comprises a display driving integrated circuit of the display panel;
the sensor circuit comprises a geomagnetic sensor, a signal processing circuit, and a register, wherein:
the geomagnetic sensor is configured to measure a magnetic field offset of the head-worn display device;
the signal processing circuit is configured to convert the magnetic field offset measured by the geomagnetic sensor into a posture information signal in a format corresponding to the register, and to provide the register with the posture information signal; and
the register is configured to store the posture information signal output by the signal processing circuit.

2. The driving circuit according to claim 1 , wherein the signal processing circuit comprises an electric signal acquiring circuit, an analog to digital converting circuit, and a encoding circuit, wherein:
the electric signal acquiring circuit is configured to convert the magnetic field offset measured by the geomagnetic sensor into an analog voltage electric signal;
the analog to digital converting circuit is configured to convert the analog voltage electric signal into a digital voltage signal; and
the encoding circuit is configured to encode the digital voltage signal as the posture information signal, and to provide the register with the posture information signal.

3. The driving circuit according to claim 2 , further comprising a data conversion circuit configured to read the posture information signal stored by the register and convert the posture information into a posture data signal and provide the posture data signal to the data processing circuit.

4. The driving circuit according to claim 3 , wherein the data processing circuit further comprises a data synchronization circuit configured to synchronize the posture data signal with the display data signal for driving the display panel and output a first display data signal;
a data transmission circuit configured to provide the first display data signal to the display panel;
a display driving circuit configured to drive the display panel to display the first display data signal.

5. The driving circuit according to claim 1 , wherein the geomagnetic sensor comprises a magneto-resistance effect sensor, a Hall effect sensor, or a magnetic flux sensor.

6. The driving circuit according to claim 1 , wherein the data processing circuit further comprises a second encoding circuit configured to receive the posture information signal generated by the sensor circuit, and to convert the posture information signal into a posture information signal in a format corresponding to the display driving integrated circuit, and to provide the display driving integrated circuit with the posture information signal.

7. The driving circuit according to claim 1 , further comprising a master processor configured to output the display data signal to the data processing circuit.

8. A virtual reality display device, comprising a master processor, a display panel and the driving circuit for head-worn display device according to claim 1 , communicatively connected with the master processor, wherein:
the master processor is configured to output the display data signal to the data processing circuit.

9. The virtual reality display device according to claim 8 , wherein the master processor transmits data with the driving circuit for head-worn display device in a wired or wireless manner.

10. The virtual reality display device according to claim 8 , wherein the signal processing circuit comprises an electric signal acquiring circuit, an analog to digital converting circuit, and a encoding circuit, wherein:
the electric signal acquiring circuit is configured to convert the magnetic field offset measured by the geomagnetic sensor into an analog voltage electric signal;
the analog to digital converting circuit is configured to convert the analog voltage electric signal into a digital voltage signal; and
the encoding circuit is configured to encode the digital voltage signal as the posture information signal, and to provide the register with the posture information signal.

11. The virtual reality display device according to claim 10 , wherein the geomagnetic sensor comprises a magneto-resistance effect sensor, a Hall effect sensor, or a magnetic flux sensor.

12. The virtual reality display device according to claim 10 , wherein the driving circuit further comprising a data conversion circuit configured to read the posture information signal stored by the register and convert the posture information into a posture data signal and provide the posture data signal to the data processing circuit.

13. The virtual reality display device according to claim 12 , wherein the data processing circuit further comprises a data synchronization circuit configured to synchronize the posture data signal with the display data signal for driving the display panel and output a first display data signal;
a data transmission circuit configured to provide the first display data signal to the display panel;
a display driving circuit configured to drive the display panel to display the first display data signal.

14. The virtual reality display device according to claim 8 , wherein the data processing circuit further comprises a second encoding circuit configured to receive the posture information signal generated by the sensor circuit, and to convert the posture information signal into a posture information signal in a format corresponding to the display driving integrated circuit, and to provide the display driving integrated circuit with the posture information signal.

Assignees

• Beijing Boe Optoelectronics Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Lei Yu
• Zhang Hao
• Chen Lili
• Han Peng
• Lu Yuanjie
• He Huidong
• Sun Yukun

Classifications

• G06F3/011

  Arrangements for interaction with the human body, e.g. for user immersion in virtual reality (blind teaching G09B21/00) · CPC title

• G02B2027/014

  comprising information/image processing systems · CPC title

• G09G5/38 Primary

  with means for controlling the display position · CPC title

• G09G2340/0464

  Positioning · CPC title

• G09G5/363

  Graphics controllers · CPC title