Method and apparatus for backlight black frame insertion optimization, medium, and electronic device

Patent metadata

Field	Value
Publication number	US-2020243026-A1
Application number	US-201916553497-A
Country	US
Kind code	A1
Filing date	Aug 28, 2019
Priority date	Jan 28, 2019
Publication date	Jul 30, 2020
Grant date	—

Abstract

A method for backlight black frame insertion optimization includes: acquiring a current display mode of the wearable smart device; acquiring a current motion state of the wearable smart device; and generating a control signal according to the current display mode and the current motion state to adjust backlight black frame insertion of the wearable smart device.

First claim

What is claimed is:

1 . A method for backlight black frame insertion optimization, the method being applied to a wearable smart device, wherein the method comprises:
acquiring a current display mode of the wearable smart device; acquiring a current motion state of the wearable smart device; and generating a control signal according to the current display mode and the current motion state to adjust backlight black frame insertion of the wearable smart device.

2 . The method for backlight black frame insertion optimization according to claim 1 , wherein the wearable smart device comprises a sensor, and acquiring a current motion state of the wearable smart device comprises:
acquiring raw data collected by the sensor; processing the raw data to obtain current posture information of the wearable smart device; and determining the current motion state of the wearable smart device according to historical posture information and the current posture information of the wearable smart device; wherein the current motion state comprises a continuous motion state and a non-continuous motion state.

3 . The method for backlight black frame insertion optimization according to claim 2 , wherein the control signal comprises a first control signal;
wherein generating the control signal according to the current display mode and the current motion state to adjust the backlight black frame insertion of the wearable smart device comprises: generating the first control signal to control the wearable smart device to perform the backlight black frame insertion in response to the current display mode being a non-two-dimensional display mode and the wearable smart device being in the continuous motion state.

4 . The method for backlight black frame insertion optimization according to claim 2 , wherein the control signal comprises a second control signal;
wherein generating the control signal according to the current display mode and the current motion state to adjust the backlight black frame insertion of the wearable smart device comprises: generating the second control signal to control the wearable smart device not to perform the backlight black frame insertion in response to the current display mode being a two-dimensional display mode or the current display mode being a non-two-dimensional display mode and the wearable smart device being in the non-continuous motion state.

5 . The method for backlight black frame insertion optimization according to claim 2 , wherein the current posture information is N th posture information, and the historical posture information comprises (N−1) th posture information and (N−2) th posture information, N being a positive integer greater than or equal to 3;
wherein determining the current motion state of the wearable smart device according to the historical posture information and the current posture information of the wearable smart device comprises:
obtaining a posture variation degree of the (N−1) th posture and a posture variation degree of the (N−2) th posture according to the (N−1) th posture information and the (N−2) th posture information;
obtaining a posture variation degree of the N th posture and the posture variation degree of the (N−2) th posture according to the N th posture information and the (N−2) th posture information in response to the posture variation degree of the (N−1) th posture and the posture variation degree of the (N−2) th posture exceeding a predetermined threshold; and
determining the current motion state of the wearable smart device as the continuous motion state in response to the posture variation degree of the N th posture and the posture variation degree of the (N−2) th posture exceeding the predetermined threshold.

6 . The method for backlight black frame insertion optimization according to claim 5 , wherein determining the current motion state of the wearable smart device according to the historical posture information and the current posture information of the wearable smart device further comprises:
determining the current motion state of the wearable smart device as the non-continuous motion state in response to the posture variation degree of the (N−1) th posture and the posture variation degree of the (N−2) th posture not exceeding the predetermined threshold or the posture variation degree of the N th posture and the posture variation degree of the (N−2) th posture not exceeding the predetermined threshold.

7 . A method for backlight black frame insertion optimization, the method being applied to a wearable smart device comprising a processor, a backlight driver chip, and a backlight; wherein the method comprises:
acquiring, by the processor, a current display mode and a current motion state of the wearable smart device, and generating, by the processor, a control signal according to the current display mode and the current motion state; and generating a pulse modulation signal by the backlight driver chip according to the control signal to control on/off of a backlight lamp of the backlight.

8 . The method for backlight black frame insertion optimization according to claim 7 , wherein the wearable smart device further comprises a sensor, the processor comprises a kernel layer, a native layer, and an application layer; wherein acquiring, by the processor, the current motion state of the wearable smart device comprises:
transferring raw data of the wearable smart device collected by the sensor to the native layer through the kernel layer; obtaining a quaternion by performing data fusion on the native layer, converting the quaternion into an Euler angle, and sending the Euler angle to the application layer; and obtaining, by the application layer, the current motion state of the wearable smart device according to the Euler angle.

9 . The method for backlight black frame insertion optimization according to claim 8 , the wearable smart device further comprising a backlight controller, wherein generating, by the processor, the control signal according to the current display mode and the current motion state comprises:
generating, by the application layer, the control signal according to the current display mode and the current motion state; and sending, by the application layer, the control signal to the backlight controller via the native layer and the kernel layer sequentially.

10 . The method for backlight black frame insertion optimization according to claim 9 , wherein the control signal comprises a first control signal and a second control signal;
generating the pulse modulation signal by the backlight driver chip according to the control signal to control on/off of the backlight lamp of the backlight comprises: parsing the control signal and sending the same to the backlight driver chip by the backlight controller; generating, by the backlight driver chip, the pulse modulation signal having a predetermined duty cycle to alternately turn on and off the backlight lamp in response to the control signal being the first control signal; and generating a DC signal by the backlight driver chip to continuously turn on the backlight lamp in response to the control signal being the second control signal.

11 . The method for backlight black frame insertion optimization according to claim 7 , wherein the wearable smart device is a virtual reality device.

12 . An apparatus for backlight black frame insertion optimization, the apparatus being applied to a wearable smart device, wherein the apparatus comprises:
a display mode acquiring module, configured to acquire a current display mode of the wearable smart device; a motion state acquiring module, configured to

Assignees

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

Inventors

• Li Xi
• Lu Yuanjie
• Miao Jinghua
• Zhao Bin
• Li Wenyu
• Wang Xuefeng
• Sun Yukun
• Peng Jinbao
• Li Zhifu
• Fan Qingwen
• Suo Jianwen
• Zhang Hao
• Chen Lili
• Sun Jiankang
• Wang Lixin
• Guo Ziqiang

Classifications

• G09G3/3406 Primary

  Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336) · CPC title

• G09G3/36 Primary

  using liquid crystals · CPC title

• G09G2320/0257

  Reduction of after-image effects · CPC title

• G09G2310/0237

  Switching ON and OFF the backlight within one frame · CPC title

• G09G2320/0261

  in the context of movement of objects on the screen or movement of the observer relative to the screen · CPC title