Method and device for controlling backlight, and display device
AssigneeHisense Visual Technology Co., Ltd.
InventorsKaihu Ji, Bin Wang
Life of this patent
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Abstract
The disclosure discloses a method and device for controlling backlight of a screen of a display device, and a display device. The method includes: generating backlight control information and caching the backlight control information, by a main controller, in response to an instruction for awakening the display device; starting, by the main controller, a backlight controller, to initialize the backlight controller; and outputting, by the main controller, the backlight control information to the backlight controller, in response to completion of initialization of the backlight controller, to cause the backlight controller to control the backlight of the screen of the display device according to the backlight control information.
Claims10
A display device comprising:
- a panel;
- a backlight source configured to provide backlight for the panel;
- and
- a main controller configured to:
- in response to an instruction for awakening the display device, generate backlight control information and cache the backlight control information;
- start a backlight controller to initialize the backlight controller;
- and
- in response to completion of initialization of the backlight controller, output the backlight control information to the backlight controller, to cause the backlight controller to control the backlight source according to the backlight control information;
- wherein the backlight controller is configured to start initialization in response to a startup control command from the main controller, and control the backlight source in response to the backlight control information output from the main controller;
- wherein the main controller is configured to output the backlight control information to the backlight controller by acquiring information for indicating an operation state of the backlight controller, and in response to the information indicating the operation state of the backlight controller is initialization completion, outputting the backlight control information to the backlight controller;
- wherein the main controller is configured to acquire the information for indicating the operation state of the backlight controller by reading a bit sequence of a register used to identify the operation state in the backlight controller, and reading a value of a subsequence at a specified position in the bit sequence;
- and
- wherein the value of the subsequence at the specified position indicates the operation state of the backlight controller.
A method for controlling backlight of a panel of a display device, the method comprising:
- generating backlight control information and caching the backlight control information, by a main controller, in response to an instruction for awakening the display device;
- starting, by the main controller, a backlight controller, to initialize the backlight controller;
- and
- outputting, by the main controller, the backlight control information to the backlight controller, in response to completion of initialization of the backlight controller, to cause the backlight controller to control a backlight source of the display device according to the backlight control information;
- wherein outputting the backlight control information to the backlight controller comprises acquiring, by the main controller, information for indicating an operation state of the backlight controller, and in response to the information indicating that the operation state of the backlight controller is initialization completion, outputting, by the main controller, the backlight control information to the backlight controller;
- wherein acquiring the information for indicating the operation state of the backlight controller comprises reading, by the main controller, a bit sequence of a register used to identify the operation state in the backlight controller, and reading a value of a subsequence at a specified position in the bit sequence;
- and
- wherein the value of the subsequence at the specified position indicates the operation state of the backlight controller.
Dependencies are inferred from the claim text.