US 11,810,535 B2
Display driver, circuit sharing frame buffer, mobile device, and operating method thereof
Taewoo Kim, Hwaseong-si (KR); Hongki Kwon, Seongnam-si (KR); Jaehun Kim, Hwaseong-si (KR); Jinyong Park, Suwon-si (KR); Jaeyoul Lee, Hwaseong-si (KR); Hyunwook Lim, Seoul (KR); Woohyuk Jang, Hwaseong-si (KR); and Hojun Chung, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Aug. 4, 2021, as Appl. No. 17/393,691.
Application 17/393,691 is a continuation of application No. 16/584,228, filed on Sep. 26, 2019, granted, now 11,087,721.
Claims priority of application No. 10-2018-0149200 (KR), filed on Nov. 28, 2018; and application No. 10-2019-0039070 (KR), filed on Apr. 3, 2019.
Prior Publication US 2021/0366442 A1, Nov. 25, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G09G 5/393 (2006.01); G06T 5/00 (2006.01); G06T 5/50 (2006.01)
CPC G09G 5/393 (2013.01) [G06T 5/003 (2013.01); G06T 5/50 (2013.01); G06T 2207/20201 (2013.01); G09G 2310/0297 (2013.01); G09G 2320/0261 (2013.01); G09G 2320/106 (2013.01); G09G 2340/02 (2013.01); G09G 2360/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display driver circuit comprising:
a receiver configured to receive a still image or a moving image from an external source;
a frame buffer configured to store the still image from the receiver in a still image mode and having a memory size corresponding to the still image;
an image processor configured to perform an image enhancement operation on the still image transferred from the frame buffer in the still image mode and perform the image enhancement operation on the moving image received from the receiver in a moving image mode,
wherein the frame buffer is further configured to store the enhanced moving image output from the image processor in the moving image mode;
a motion processor configured to perform a motion compensation operation using an Nth frame of the enhanced moving image from the image processor and an (N−1)th frame of the enhanced moving image stored in the frame buffer, in the moving image mode;
a driver configured to output the enhanced still image from the image processor in the still image mode, and output the compensated moving image from the motion processor; and
a first multiplexer and a second multiplexer connected to the receiver,
wherein the frame buffer has a memory size corresponding to the still image, and
in the still image mode, the first multiplexer transfers the still image to the frame buffer to be processed in an order of the frame buffer, the image processor, and the driver, and in the moving image mode, the second multiplexer transfers the moving image to the image processor to be processed in an order of the image processor, the frame buffer, the motion processor, and the driver.