CROSS REFERENCE TO RELATED APPLICATIONS

This application is the U.S. national phase entry of PCT/CN2017/116369, with an international filing date of Dec. 15, 2017, which claims the benefit of Chinese Patent Application No. 201710334364.7 filed on May 12, 2017, the entire disclosures of which are incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to the field of display technology, and particularly to a display control device, a display control method, and a display system.

BACKGROUND

High resolution display devices have become popular in the market. The images supplied to such a display device have such a high resolution that it takes a relatively long time for them to be transmitted from a signal source to the display device with the transmission speed being constant. This may affect the user's viewing experience.

SUMMARY

It would be advantageous to provide a mechanism that may alleviate, mitigate or eliminate the above-mentioned problem.

According to an aspect of the present disclosure, a display control device for a display device is provided. The display control device comprises: an image pre-processor configured to divide, based on an identification of a gaze region in a screen of the display device, an original image into a target area corresponding to the gaze region and a non-target area other than the target area, the image pre-processor being further configured to perform pre-processing on the non-target area, the pre-processing comprising reducing a resolution of the non-target area; and a communication interface configured to transmit the target area and the pre-processed non-target area to the display device for display at the gaze region and a region other than the gaze region in the screen, respectively.

In certain exemplary embodiments, the display control device further comprises a gaze tracker configured to identify the gaze region in the screen of the display device and provide the identification to the image pre-processor.

In certain exemplary embodiments, the display device comprises a pixel array arranged in a pattern for sub-pixel rendering. The display control device further comprises an image renderer configured to perform the sub-pixel rendering on at least the target area such that the sub-pixel rendered target area can be displayed at the gaze region with an apparent resolution higher than a physical resolution of the display device.

In certain exemplary embodiments, the display control device further comprises an image formatter configured to perform formatting on at least one of the target area or the pre-processed non-target area. The formatting comprises padding the at least one of the target area or the pre-processed non-target area with default data to satisfy a transmission specification adopted by the communication interface.

According to another aspect of the present disclosure, a display system is provided comprising: a display device; and the display control device recited above.

According to yet another aspect of the present disclosure, a display control method is provided comprising: dividing, based on an identification of a gaze region in a screen of a display device, an original image into a target area corresponding to the gaze region and a non-target area other than the target area; pre-processing the non-target area, the pre-processing comprising reducing a resolution of the non-target area; and transmitting the target area and the pre-processed non-target area to the display device for display at the gaze region and a region other than the gaze region in the screen, respectively.

According to still yet another aspect of the present disclosure, a display control device for use with a display device is provided, comprising: means for dividing, based on an identification of a gaze region in a screen of the display device, an original image into a target area corresponding to the gaze region and a non-target area other than the target area; means for pre-processing the non-target area, the pre-processing comprising reducing a resolution of the non-target area; and means for transmitting the target area and the preprocessed non-target area to the display device for display at the gaze region and a region other than the gaze region in the screen, respectively.

These and other aspects of the present disclosure will be apparent from and elucidated with reference to the embodiment(s) described hereinafter.

