公开(公告)号：US20170011683A1

公开(公告)日：2017-01-12

申请号：US15274551

申请日：2016-09-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jong Kon Bae ,  Won Sik Kang ,  Yang Hyo Kim ,  Jae Hyuck Woo

IPC: G09G3/3225 ,  G09G3/36

CPC classification number: G09G3/3225 ,  G09G3/20 ,  G09G3/3648 ,  G09G5/18 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2370/08

Abstract: Methods of operating a display driver integrated circuit (IC) are provided. A method of operating a display driver IC may include generating a first clock signal, and calculating a frequency of the first clock signal using a second clock signal. Moreover, the method may include generating an adjustment signal using the frequency of the first clock signal and a target frequency, and adjusting the frequency of the first clock signal using the adjustment signal. Related display driver ICs and portable electronic devices are also provided.

Abstract translation: 提供了操作显示驱动器集成电路（IC）的方法。 操作显示驱动器IC的方法可以包括产生第一时钟信号，以及使用第二时钟信号来计算第一时钟信号的频率。 此外，该方法可以包括使用第一时钟信号的频率和目标频率来生成调整信号，并且使用调整信号来调整第一时钟信号的频率。 还提供了相关的显示驱动器IC和便携式电子设备。

公开(公告)号：US10438526B2

公开(公告)日：2019-10-08

申请号：US15215803

申请日：2016-07-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yang Hyo Kim ,  Do Kyung Kim ,  Soo Young Woo

IPC: G09G5/02 ,  G09G3/20

Abstract: A display driver and a display device and system including the same are provided. The display driver includes an interface circuit configured to receive image data from a host; a graphics memory configured to store m-bit data per pixel corresponding to the received image data, where m being an integer greater than zero; a color converter configured to convert the m-bit data per pixel stored in the graphics memory into n-bit data per pixel and to output n-bit converted data, n being an integer greater than m; a selector configured to selectively output one among the n-bit converted data and the image data received from the host; and a source driver configured to drive a display panel based on output data of the selector.

公开(公告)号：US10380934B2

公开(公告)日：2019-08-13

申请号：US15656209

申请日：2017-07-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yang Hyo Kim ,  Yong Soo Lee ,  Min Su Ha

IPC: G09G5/12 ,  G09G3/20 ,  G09G3/3225

Abstract: A display driving device includes an interface, a clock generator, a sync signal generator and a timing controller. The interface receives a first vertical sync signal having a first vertical period, a first horizontal sync signal having a first horizontal period shorter than the first vertical period, and image data. The clock generator generates a clock signal having a predetermined frequency. The sync signal generator generates a second vertical sync signal using the first vertical sync signal, and generates a second horizontal sync signal having a second horizontal period different from the first horizontal period, using the clock signal, when a porch period included in the first vertical period is greater than a predetermined reference value. The timing controller drives a display panel based on the second vertical sync signal and the second horizontal sync signal.

公开(公告)号：US10008176B2

公开(公告)日：2018-06-26

申请号：US14534606

申请日：2014-11-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yang Hyo Kim ,  Won Sik Kang ,  Jong Kon Bae ,  Jae Hyuck Woo

IPC: G09G5/00 ,  G09G3/20

CPC classification number: G09G5/006 ,  G09G3/2092 ,  G09G2330/021 ,  G09G2340/00 ,  G09G2360/08 ,  G09G2360/12 ,  G09G2360/18 ,  G09G2370/08

Abstract: A display driver integrated circuit (IC) (DDI) includes a graphic memory that receives and stores line data including a plurality of pixel data blocks, an indicator generating circuit that compares the pixel data blocks of the line data received by the graphic memory with each other and generates an indicator signal corresponding to results of the comparison, and a read controller that performs a read operation with respect to the whole or a part of the line data from the graphic memory, based on a read command for the line data and the indicator signal.

公开(公告)号：US10269292B2

公开(公告)日：2019-04-23

申请号：US15274551

申请日：2016-09-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jong Kon Bae ,  Won Sik Kang ,  Yang Hyo Kim ,  Jae Hyuck Woo

IPC: H03L7/00 ,  G09G3/3225 ,  G09G5/18 ,  G09G3/36 ,  G09G3/20

Abstract: Methods of operating a display driver integrated circuit (IC) are provided. A method of operating a display driver IC may include generating a first clock signal, and calculating a frequency of the first clock signal using a second clock signal. Moreover, the method may include generating an adjustment signal using the frequency of the first clock signal and a target frequency, and adjusting the frequency of the first clock signal using the adjustment signal. Related display driver ICs and portable electronic devices are also provided.

公开(公告)号：US20180277034A1

公开(公告)日：2018-09-27

申请号：US15656209

申请日：2017-07-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yang Hyo Kim ,  Yong Soo LEE ,  Min Su HA

IPC: G09G3/20 ,  G09G3/3225

CPC classification number: G09G3/2092 ,  G09G3/3225 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2360/18

Abstract: A display driving device includes an interface, a clock generator, a sync signal generator and a timing controller. The interface receives a first vertical sync signal having a first vertical period, a first horizontal sync signal having a first horizontal period shorter than the first vertical period, and image data. The clock generator generates a clock signal having a predetermined frequency. The sync signal generator generates a second vertical sync signal using the first vertical sync signal, and generates a second horizontal sync signal having a second horizontal period different from the first horizontal period, using the clock signal, when a porch period included in the first vertical period is greater than a predetermined reference value. The timing controller drives a display panel based on the second vertical sync signal and the second horizontal sync signal.

公开(公告)号：US09898999B2

公开(公告)日：2018-02-20

申请号：US14321923

申请日：2014-07-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jong Kon Bae ,  Won Sik Kang ,  Yang Hyo Kim ,  Jae Hyuck Woo

IPC: G06F1/00 ,  G09G5/04 ,  G09G5/36 ,  G09G3/34

CPC classification number: G09G5/04 ,  G09G3/3406 ,  G09G5/363 ,  G09G2320/062 ,  G09G2330/023 ,  G09G2360/06 ,  G09G2360/08 ,  G09G2370/08

Abstract: A method of operating a display driver IC (DDI) includes comparing previous line data with current line data and the R, G, and B components of a color data signals, and controlling whether to activate part of an intermediate processing circuit to process the current line data or more than a single component of the color data signal according to a comparison result.