DEVICE AND METHOD OF USING SLICE UPDATE MAP

• US 20170287384A1
• Filed: 03/29/2017
• Published: 10/05/2017
• Est. Priority Date: 03/31/2016
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: LEE, SANG-HOON, Roh, Jong-Ho, Ha, Sang-Hoon, Choi, Sung-Hoo, Yang, Hoon-Mo, Kim, Seong-Woon, Lee, Jong-Hyup, Yang, Ha-Na
• Granted Patent: US 10,446,071 B2
• Time in Patent Office: Days
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2340/0464 Positioning
• CPC Class Codes: G09G 2340/14 Solving problems related to the presentation of information to be displayed
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 5/026 Control of mixing and/or overlay of colours in general G09G5/022 and G09G5/024 take precedence
• CPC Class Codes: G09G 5/225 comprising a loadable character generator character generators per se G09G5/24
• CPC Class Codes: G09G 5/363 Graphics controllers
• CPC Class Codes: G09G 5/395 Arrangements specially adapted for transferring the contents of the bit-mapped memory to the screen G09G5/399 takes precedence

Abstract

An electronic device includes a processor configured to generate a slice update map indicating a location of at least one updated slice having a data change in frame data including a plurality of slices; and a display controller configured to extract frame data of the at least one updated slice from a memory based on the slice update map and transfer the frame data to a display driver.

Claims

1. An electronic device comprising:

a processor configured to generate a slice update map indicating a location of at least one updated slice having a data change in frame data comprising a plurality of slices; and

a display controller configured to extract frame data of the at least one updated slice from a memory based on the slice update map and transfer the frame data to a display driver.

2. The electronic device of claim 1, wherein the processor outputs the slice update map and information about a slice width and a slice height of a slice among the at least one updated slice to the display controller.

3. The electronic device of claim 1, wherein the display controller performs at least one of color coordinate conversion, enhancement processing, and blending on the frame data of the at least one updated slice based on the slice update map.

4. The electronic device of claim 1, wherein the display controller groups the at least one updated slice into at least one sub block, and transfers information about a location of the at least one sub block and display data to the display driver in sub block-based units, and

wherein the at least one sub block is defined to have a rectangular shape comprising updated slices.

5. The electronic device of claim 4, wherein the display controller transfers the display data to the display driver in the sub block-based units by serial transmission.

6. The electronic device of claim 4, wherein the display controller transfers a serial transmission signal comprising a location of a start point of a sub block, a location of an end point of the sub block, and the display data to the display driver in the sub block-based units with respect to the at least one sub block.

7. The electronic device of claim 1, wherein the display controller transfers information about a slice width and a slice height of the at least one updated slice to the display driver, and transfers information about a slice location of the at least one updated slice and display data to the display driver in slice-based units.

8. The electronic device of claim 1, wherein the display controller transfers a TE signal informing of a start of a frame to the display driver.

9. The electronic device of claim 8, wherein the display controller transfers the TE signal to the display driver in advance of transfer of the frame data.

10. The electronic device of claim 1, wherein the display controller holds transfer of display data when a transfer time of display data of the at least one updated slice is earlier than an expected time.

11. The electronic device of claim 1, wherein the display controller groups the at least one updated slice into at least one sub block and transfers display data in sub block-based units to the display driver,

wherein the display driver displays an image at a raster scan order, and

wherein the at least one sub block is defined to have a horizontal length as long as possible.

12. The electronic device of claim 1, wherein the display driver comprises a frame memory that stores display data in a frame-based unit.

13. The electronic device of claim 1, wherein the processor sets the plurality of slices in order to reduce a number of updated slices based on a location having the data change in the frame data.

14. The electronic device of claim 1, wherein the display controller transfers display data to the display driver according to a mobile industry processor interface (MIPI) alliance standard in slice-based units or sub block-based units comprising a plurality of slices.

15. An electronic device control method comprising:

generating a slice update map indicating a location of at least one updated slice having a data change in frame data comprising a plurality of slices;

extracting frame data of the at least one updated slice from a memory based on the slice update map; and

transferring the frame data to a display driver.

16. The electronic device control method of claim 15, further comprising:

outputting the slice update map and information about a slice width and a slice height to the display controller.

17. The electronic device control method of claim 15, further comprising:

the display controller performing at least one of color coordinate conversion, enhancement processing, and blending on the frame data of the at least one updated slice based on the slice update map.

18. The electronic device control method of claim 15, further comprising:

grouping the at least one updated slice into at least one sub block; and

transferring information about a location of the at least one sub block and display data to the display driver in sub block-based units, and

wherein the at least one sub block is defined to have a rectangular shape comprising updated slices.

19-26. -26. (canceled)

27. A display driving device comprising:

a receiver configured to receive a serial transmission signal comprising a first location of a start point of a sub block having a data change, a second location of an end point of the one sub block, and display data having a size of the sub block;

a frame memory; and

a processor configured to output a current frame stored in the frame memory to a display panel,

wherein the receiver is configured to update the current frame stored in the frame memory with the display data using the first location and the second location.

28. The display driving device of claim 27, wherein the processor delays updating by the receiver of the frame memory until the processor has completed output of a previous frame to the display panel.

29-33. -33. (canceled)