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公开(公告)号：US11908364B2
公开(公告)日：2024-02-20
申请号：US17462646
申请日：2021-08-31
发明人： Byeongcheol Jang , Yonghoon Yu , Hongki Kwon , Taewoo Kim , Jinyong Park , Hyunwook Lim , Woohyuk Jang , Hojun Chung
CPC分类号： G09G3/20 , G09G5/003 , G09G2320/103 , G09G2330/021 , G09G2340/02 , G09G2360/12 , G09G2370/08
摘要： Provided are a low-power display driving circuit performing internal encoding and decoding and an operating method thereof. The display driving circuit includes a memory configured to store an input bit stream encoded by an encoder and a controller configured to determine a data path through which output frame data in a second frame period passes according to whether internal encoding is successful in a first frame period, wherein, when the internal encoding is successful, the controller performs internal encoding in the second frame period, stores a generated internal bit stream in the memory, allows the internal bit stream to pass through a low-power path to generate the output frame data, and when the internal encoding fails, the controller generates the output frame data by allowing the input bit stream to pass through a normal path in the second frame period, changes an encoding setting of an internal encoder, and repeats the internal encoding.
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公开(公告)号：US11670258B2
公开(公告)日：2023-06-06
申请号：US17155487
申请日：2021-01-22
发明人： Hongki Kwon , Taewoo Kim , Jinyong Park , Hyunwook Lim , Woohyuk Jang , Hojun Chung
CPC分类号： G09G5/10 , G09G3/20 , G09G2320/0233 , G09G2320/0626 , G09G2320/0693 , G09G2330/08 , G09G2360/145
摘要： A method of luminance compensation includes; generating luminance compensation data based on test image data, each of the test image data corresponding to one gray level, and each of the luminance compensation data including compensation values corresponding to the one gray level, generating intra-plane data based on the luminance compensation data, one of the intra-plane data being generated based on one of the luminance compensation data, generating inter-plane stream data based on the intra-plane data, one of the inter-plane stream data being generated based on data blocks included in the intra-plane data and disposed at a same location within the intra-plane data, and sequentially storing the inter-plane stream data in a memory.
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3.发明授权公开(公告)号：US11810535B2
公开(公告)日：2023-11-07
申请号：US17393691
申请日：2021-08-04
发明人： Taewoo Kim , Hongki Kwon , Jaehun Kim , Jinyong Park , Jaeyoul Lee , Hyunwook Lim , Woohyuk Jang , Hojun Chung
CPC分类号： G09G5/393 , G06T5/003 , G06T5/50 , G06T2207/20201 , G09G2310/0297 , G09G2320/0261 , G09G2320/106 , G09G2340/02 , G09G2360/18
摘要： A display driver circuit includes a receiver that receives a still image or a moving image, a frame buffer that stores the still image received by the receiver in a still image mode, an image processor that performs an image enhancement operation on the moving image transferred from the receiver or the still image transferred from the frame buffer, and a motion processor that performs a motion compensation operation using a current frame output from the image processor and a previous frame stored in the frame buffer in a moving image mode. The previous frame is data which, in the moving image mode, are processed by the image processor before the current frame and are then stored in the frame buffer. The previous frame is output from the frame buffer to the motion processor in synchronization with the current frame.
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公开(公告)号：US11769434B2
公开(公告)日：2023-09-26
申请号：US17412965
申请日：2021-08-26
发明人： Jinyong Park , Hongki Kwon , Taewoo Kim , Yonghoon Yu , Hyunwook Lim , Byeongcheol Jang , Woohyuk Jang , Hojun Chung
CPC分类号： G09G3/20 , G06T1/20 , G06T1/60 , G06T9/00 , G09G2310/0275 , G09G2310/0291 , G09G2330/021 , G09G2340/02
摘要： A display driver circuit receives externally-encoded image data and processes the data using a memory (graphic RAM), an internal encoder, and an external decoder configured to operate on the externally-encoded image data. The processed data is provided to a display device by a source driver of the display driver circuit. Data is processed through the graphic RAM and an internal decoder or the external decoder depending on whether a slice of the data is a currently received update slice, a recently received standby slice, or a still slice.
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公开(公告)号：US12106736B2
公开(公告)日：2024-10-01
申请号：US17807237
申请日：2022-06-16
发明人： Jinyong Park , Hongki Kwon , Taewoo Kim , Hyeonsu Park , Hyunwook Lim , Hojun Chung
CPC分类号： G09G5/393 , G09G3/3696 , G09G2330/021 , G09G2360/18
摘要： A display driver integrated circuit includes a frame buffer, a plurality of image processing circuits and an image processing controller. The frame buffer sequentially stores a plurality of frame data received from a host processor. Each of the plurality of frame data includes a plurality of data slices. The image processing circuits perform image signal processing operations, respectively, on ones of the data slices that are included in a respective one of the plurality of frame data and which are sequentially retrieved from the frame buffer. The image processing controller bypasses at least one of the image processing circuits by applying a bypass control signal to the image processing circuits based on a first plurality of data slices included in a first one of the plurality of frame data and a second plurality of data slices included in a second one of the plurality of frame data.
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6.发明授权公开(公告)号：US11087721B2
公开(公告)日：2021-08-10
申请号：US16584228
申请日：2019-09-26
发明人： Taewoo Kim , Hongki Kwon , Jaehun Kim , Jinyong Park , Jaeyoul Lee , Hyunwook Lim , Woohyuk Jang , Hojun Chung
摘要： A display driver circuit includes a receiver that receives a still image or a moving image, a frame buffer that stores the still image received by the receiver in a still image mode, an image processor that performs an image enhancement operation on the moving image transferred from the receiver or the still image transferred from the frame buffer, and a motion processor that performs a motion compensation operation using a current frame output from the image processor and a previous frame stored in the frame buffer in a moving image mode. The previous frame is data which, in the moving image mode, are processed by the image processor before the current frame and are then stored in the frame buffer. The previous frame is output from the frame buffer to the motion processor in synchronization with the current frame.
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公开(公告)号：US20230137060A1
公开(公告)日：2023-05-04
申请号：US17807237
申请日：2022-06-16
发明人： Jinyong Park , Hongki Kwon , Taewoo Kim , Hyeonsu Park , Hyunwook Lim , Hojun Chung
摘要： A display driver integrated circuit includes a frame buffer, a plurality of image processing circuits and an image processing controller. The frame buffer sequentially stores a plurality of frame data received from a host processor. Each of the plurality of frame data includes a plurality of data slices. The image processing circuits perform image signal processing operations, respectively, on ones of the data slices that are included in a respective one of the plurality of frame data and which are sequentially retrieved from the frame buffer. The image processing controller bypasses at least one of the image processing circuits by applying a bypass control signal to the image processing circuits based on a first plurality of data slices included in a first one of the plurality of frame data and a second plurality of data slices included in a second one of the plurality of frame data.
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公开(公告)号：US11527191B2
公开(公告)日：2022-12-13
申请号：US16866930
申请日：2020-05-05
发明人： Hojun Chung , Hongki Kwon , TaeWoo Kim , Jinyong Park , Jaeyoul Lee
IPC分类号： H04N19/176 , G09G3/20 , H04N19/182
摘要： The present invention provides a display driver circuit. A determination circuit is configured to select a first mode for encoding first image data based on a first set of conditions respectively corresponding to a first set of modes. An encoder is configured to encode the first image data in the first mode. The determination circuit is additionally configured to select a second mode for encoding second image data received (n−1)th after the first image data are received; and to select a third mode for encoding third image data received(n)th after the first image data are received, based on a second set of conditions respectively corresponding to the first set of modes. A second condition in the second set of the conditions corresponding to the second mode includes a wider range of values than a first condition in the first set of the conditions corresponding to the second mode.
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