Display control device, display device, method for controlling display control device, and storage medium
AssigneeSharp Kabushiki Kaisha
InventorsTakuya Okamoto, Junki Asai
Life of this patent
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Abstract
The present invention provides a display control device and a display device each of which can reduce electric power consumption by switching a resolution of image data to be displayed. In a case of transferring image data having a 4k resolution, an image transferring section (12) transfers the image data to a display driver (20) via a first lane and a second lane. In a case of transferring image data having an FHD resolution, the image transferring section (12) stops operation of the first lane and transfers the image data to the display driver (20) via the second lane.
Claims13
A display control device, comprising:
- a display driver;
- an image transferring section configured to transfer image data to the display driver;
- and
- a first transmission line and a second transmission line each of which connects the display driver with the image transferring section,
- in a case of transferring image data having a first resolution, the image transferring section transferring the image data having the first resolution to the display driver via the first transmission line and the second transmission line, and
- in a case of transferring image data having a second resolution which is lower than the first resolution, the image transferring section (i) stopping operation of the first transmission line and (ii) transferring the image data having the second resolution to the display driver via the second transmission line, wherein the display driver includes a frame memory which is capable of storing the image data having the first resolution, and wherein in a case of storing the image data having the second resolution, the frame memory skips some of memory addresses.
A display control device comprising:
- a display driver including a frame memory which is capable of storing image data having a first resolution;
- an image transferring section configured to transfer image data to the display driver;
- and
- a first transmission line and a second transmission line each of which connects the display driver with the image transferring section, wherein
- in a case of transferring the image data having the first resolution, the image transferring section transfers the image data having the first resolution to the display driver via the first transmission line and the second transmission line, and
- in a case of transferring image data having a second resolution which is lower than the first resolution, the image transferring section (i) stops operation of the first transmission line and (ii) transfers the image data having the second resolution to the display driver via the second transmission line, wherein
- when a resolution of the image data to be transferred is switched from the first resolution to the second resolution, the display driver reads out the image data which has the first resolution and is stored in the frame memory, converts the image data having the first resolution into image data having the second resolution, and causes the image data, whose resolution has been thus converted into the second resolution, to be stored in the frame memory.
A display control device comprising:
- a display driver including a frame memory which is capable of storing image data having a first resolution;
- an image transferring section configured to transfer image data to the display driver;
- and
- a first transmission line and a second transmission line each of which connects the display driver with the image transferring section, wherein
- in a case of transferring the image data having the first resolution, the image transferring section transfers the image data having the first resolution to the display driver via the first transmission line and the second transmission line, and
- in a case of transferring image data having a second resolution which is lower than the first resolution, the image transferring section (i) stops operation of the first transmission line and (ii) transfers the image data having the second resolution to the display driver via the second transmission line, wherein
- during a period of storing the image data having the second resolution, the frame memory stops memory retaining operation in some of memory regions.
A method of controlling a display control device which includes (i) a display driver, (ii) an image transferring section configured to transfer image data to the display driver, and (iii) a first transmission line and a second transmission line each of which connects the display driver with the image transferring section, wherein:
- in a case where image data having a first resolution is transferred, the image data having the first resolution is transferred from the image transferring section to the display driver via the first transmission line and the second transmission line;
- and
- in a case where image data having a second resolution which is lower than the first resolution is transferred, operation of the first transmission line is stopped and the image data having the second resolution is transferred from the image transferring section to the display driver via the second transmission line, wherein the display driver includes a frame memory which is capable of storing the image data having the first resolution, and wherein in a case of storing the image data having the second resolution, the frame memory skips some of memory addresses.
Dependencies are inferred from the claim text.