Display device, driver of the display device, electronic device including the display device and the driver, and display system

Patent metadata

Field	Value
Publication number	US-2016358527-A1
Application number	US-201515111790-A
Country	US
Kind code	A1
Filing date	Jan 14, 2015
Priority date	Jan 14, 2014
Publication date	Dec 8, 2016
Grant date	—

Abstract

A display device includes: an application processor (AP) comprising an encoder for determining the repeatability of display data, generating conversion information, encoding the display data based on the conversion information, and generating encoded display data; and a display driver integrated circuit (IC) for receiving the encoded display data and driving a display panel.

First claim

1 . An electronic device comprising:
an application processor (AP) comprising an encoder configured to determine repeatability of display data, to generate conversion information based on the repeatability of display data, to encode the display data based on the repeatability of display data, and to generate encoded display data with the conversion information; and a display driver integrated circuit (IC) configured to receive the encoded display data with the conversion information and to drive a display panel according to the encoded display data based on the conversion information.

2 . The electronic device of claim 1 , wherein the display driver IC comprises:
a decoder configured to reconstruct the encoded display data corresponding to the conversion information; and a source driver configured to receive the display data reconstructed by the decoder.

3 . The electronic device of claim 1 , wherein the encoder determines whether display data is the same between a plurality of pixel groups having a same size to generate the conversion information.

4 . The electronic device of claim 3 , wherein the encoder determines that the display data is the same between the plurality of pixel groups when a difference between display data corresponding to each of the plurality of pixel groups having the same size is below a reference value.

5 . The electronic device of claim 3 , wherein the plurality of pixel groups comprise pixel groups of a same line, pixel groups of a same frame, or pixel groups including pixel blocks including N number of horizontal pixels and M number of vertical pixels.

6 . The electronic device of claim 1 , wherein, the encoded display data comprises:
a command comprising at least one of data regarding a repeated pixel, whether to repeat a pixel, and a repeating method; and a header comprising a parameter including the data regarding the repeating method.

7 . The electronic device of claim 6 , wherein the parameter comprises data as to whether display data of a first pixel repeats display data of a second pixel neighboring the first pixel.

8 . The electronic device of claim 7 , wherein the encoded display data comprises a body comprising data regarding display data that is not included in the header for each pixel.

9 . The electronic device of claim 8 , wherein the parameter comprises the data as to whether the display data of the first pixel repeats the display data of the second pixel neighboring the first pixel, and
wherein the body comprises the display data of the first pixel when the display data of the first pixel does not repeat the display data of the second pixel neighboring the first pixel.

10 . The electronic device of claim 8 , wherein the encoded display data comprises a tail comprising a parity check code for checking completeness of the encoded display data.

11 . The electronic device of claim 1 , wherein the encoder comprises:
a line comparator configured to generate the conversion information for each line; and a comparison value storage configured to store a result of the determination of the line comparator.

12 . The electronic device of claim 1 , wherein the encoder generates the conversion information for blocks having a same size,
wherein the encoder generates the conversion information for the first block by determining whether display data of a first block and display data of a second block are the same.

13 . The electronic device of claim 1 , wherein the encoder generates the conversion information by determining whether an RGB data value is repeated between a plurality of pixel groups of a same size.

14 . The electronic device of claim 1 , wherein the encoder generates the conversion information by determining whether same display data is repeated between the plurality of pixel groups of the same size comprising gray display data.

15 . A display driver integrated circuit (IC) comprising an encoder configured to determine repeatability of display data, to generate conversion information based on the repeatability of display data, to encode the display data based on the repeatability of display data, and to generate encoded display data with the conversion information, wherein the display driver IC receives the encoded display data with the conversion information and drives a display panel according to the encoded display data based on the conversion information.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Bae Jong-Kon
• Kim Kwang-Young
• Lee Yong-Man
• Han Dong-Kyoon

Classifications

• H03M7/46

  Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind · CPC title

• G09G3/2003 Primary

  Display of colours (specific for liquid crystal displays G09G3/3607) · CPC title

• G09G2360/16

  Calculation or use of calculated indices related to luminance levels in display data · CPC title

• G09G3/2096

  Details of the interface to the display terminal specific for a flat panel (suitable for both CRT and flat panel G09G5/006; specific for a CRT G09G1/167) · CPC title

• G09G2340/02

  Handling of images in compressed format, e.g. JPEG, MPEG · CPC title