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公开(公告)号:US20240096293A1
公开(公告)日:2024-03-21
申请号:US18519840
申请日:2023-11-27
申请人: E INK CORPORATION
发明人: Kenneth R. CROUNSE
CPC分类号: G09G3/344 , G09G3/2048 , G09G2320/0242 , G09G2340/0407
摘要: Methods for driving color electrophoretic displays including a plurality of display pixels capable of producing a set of primary colors. The method comprises defining a separation cumulate threshold array and using the separation cumulate threshold array to identify areas of the electrophoretic display that are better suited for dithering and not dithering the areas of the electrophoretic display that exceed the separation cumulate threshold.
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公开(公告)号:US11869451B2
公开(公告)日:2024-01-09
申请号:US17981104
申请日:2022-11-04
申请人: E INK CORPORATION
发明人: Kenneth R. Crounse
CPC分类号: G09G3/344 , G09G3/2048 , G09G2320/0242 , G09G2340/0407
摘要: Methods for driving color electrophoretic displays including a plurality of display pixels capable of producing a set of primary colors. The method comprises defining a separation cumulate threshold array and using the separation cumulate threshold array to identify areas of the electrophoretic display that are better suited for dithering and not dithering the areas of the electrophoretic display that exceed the separation cumulate threshold.
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公开(公告)号:US20230274683A1
公开(公告)日:2023-08-31
申请号:US18007026
申请日:2021-06-24
发明人: Kota MASE
CPC分类号: G09G3/2048 , G09G3/3611 , G09G3/2022 , G09G2320/0673 , G09G2320/0247 , G09G2320/0276
摘要: To suppress disturbance of a video or the like. A drive circuit is a drive circuit that drives each picture element in a display device arranged in a matrix, and includes a noise imparting unit. In a case where the gradation level of the picture element is a predetermined gradation level, the noise imparting unit imparts one of a plurality of correction values to the gradation level data of the picture element.
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公开(公告)号:US09953591B1
公开(公告)日:2018-04-24
申请号:US14500590
申请日:2014-09-29
申请人: Apple Inc.
IPC分类号: G09G3/36
CPC分类号: G09G3/3607 , G09G3/2048 , G09G3/3611
摘要: Systems, apparatuses, and methods for driving a split display with multiple display pipelines. Frames for driving a display are logically divided into portions, a first display pipeline drives a first portion of the display, and a second display pipeline drives a second portion of the display. Each display pipeline generates dither noise for each frame in its entirety but only utilizes dither noise for the portion of the frame which is being driven to its respective portion of the display. This approach prevents visual artifacts from appearing at the dividing line between the first and second portions of the display.
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公开(公告)号:US20130141455A1
公开(公告)日:2013-06-06
申请号:US13448402
申请日:2012-04-17
申请人: Jian-Chao Wang
发明人: Jian-Chao Wang
IPC分类号: G09G5/02
CPC分类号: G09G3/2048 , G09G3/3614 , G09G5/026 , G09G2320/0242 , G09G2320/0247 , G09G2340/10
摘要: An image dithering module is provided. The image dithering module includes a plurality of data processing channels. The data processing channels respectively process image data of each pixel or sub-pixel in an image frame. Each of the data processing channels includes a bit processing unit and a bit truncator unit. The bit processing unit mixes first pixel data with random data to generate second pixel data. The bit truncator unit truncates partial bits of the second pixel data to generate third pixel data.
摘要翻译: 提供图像抖动模块。 图像抖动模块包括多个数据处理通道。 数据处理通道分别处理图像帧中的每个像素或子像素的图像数据。 每个数据处理通道包括位处理单元和位截断器单元。 位处理单元将第一像素数据与随机数据混合以产生第二像素数据。 位截断器单元截断第二像素数据的部分位以产生第三像素数据。
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公开(公告)号:US20130038791A1
公开(公告)日:2013-02-14
申请号:US13207805
申请日:2011-08-11
申请人: Brijesh Tripathi , Nitin Bhargava
发明人: Brijesh Tripathi , Nitin Bhargava
CPC分类号: G09G5/395 , G09G3/2048 , G09G5/18 , G09G2340/125 , G09G2360/125 , G09G2370/10
摘要: A display controller may include an RGB Interface module and a display port module, which may both use a target-master interface, in which the data receiving module pops pixels from the data sourcing module, and generates the HSync, VSync, and VBI timing signals. A dither module may be instantiated between the RGB interface module and display port module to perform dithering. The dither module may use a source-master interface, in which data signals and data valid signals are issued by the data sourcing module. In order to avoid having to use a large storage capacity FIFO with the dither module, a control unit may issue interface signals to the RGB Interface module and display port module, and clock-gate the dither module, to allow the data signals and data valid signals to properly interface with the RBG interface module and display port module, and provide data flow from the RGB interface module to the dither module to the display port module.
摘要翻译: 显示控制器可以包括RGB接口模块和显示器端口模块,其可以使用目标主机接口,其中数据接收模块从数据采集模块中弹出像素,并且生成HSync,VSync和VBI定时信号 。 可以在RGB接口模块和显示端口模块之间实例化抖动模块以执行抖动。 抖动模块可以使用源 - 主接口,其中数据信号和数据有效信号由数据采集模块发出。 为了避免使用具有抖动模块的大容量FIFO,控制单元可以向RGB接口模块和显示端口模块发出接口信号,并对抖动模块进行时钟门控,以允许数据信号和数据有效 信号与RBG接口模块和显示端口模块正确接口,并提供从RGB接口模块到抖动模块到显示端口模块的数据流。
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公开(公告)号:US08325387B2
公开(公告)日:2012-12-04
申请号:US12333447
申请日:2008-12-12
申请人: Min-Woo Lee , Min-Kyu Park , Sung-Dae Cho
发明人: Min-Woo Lee , Min-Kyu Park , Sung-Dae Cho
IPC分类号: H04N1/405
CPC分类号: H04N1/41 , G09G3/2048 , G09G2320/0242 , H04N1/405 , H04N1/58
摘要: Disclosed is a method and an apparatus for dithering a pixel value in a image. The method includes checking a difference in chrominance signals between a particular pixel and a pixel adjacent to the particular pixel, in an input image, designating the particular pixel as being in a flat or a non-flat area in consideration of the difference in chrominance signals and dithering the particular pixel when the pixel is designated as being in the non-flat area.
摘要翻译: 公开了一种用于使图像中的像素值抖动的方法和装置。 该方法包括在输入图像中检查特定像素与特定像素相邻的像素之间的色度信号的差异,将特定像素指定为处于平坦或非平坦区域中的色度信号的差异 并且当像素被指定为处于非平坦区域时,将特定像素抖动。
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公开(公告)号:US08159440B2
公开(公告)日:2012-04-17
申请号:US10561270
申请日:2004-06-28
申请人: Hirobumi Furihata , Katsuhisa Oohashi , Junyou Shioda , Yoshiyuki Teshirogi , Takashi Nose , Mika Tuomi
发明人: Hirobumi Furihata , Katsuhisa Oohashi , Junyou Shioda , Yoshiyuki Teshirogi , Takashi Nose , Mika Tuomi
IPC分类号: G09G3/36
CPC分类号: G09G5/393 , G06F3/14 , G09G3/2011 , G09G3/2018 , G09G3/2025 , G09G3/2048 , G09G3/2051 , G09G3/2055 , G09G3/3648 , G09G3/3666 , G09G3/3688 , G09G5/346 , G09G5/363 , G09G5/397 , G09G5/40 , G09G2320/0257 , G09G2320/0285 , G09G2320/106 , G09G2340/02 , G09G2340/10 , G11C11/413
摘要: A controller/driver is composed of a work memory, a graphic engine, a display memory, and a driver circuit. The graphic engine converts externally received image data into first bitmap data, and stores the first bitmap data in the work memory. The display memory receives and stores second bitmap data developed from the first bitmap data stored in the work memory. The driver circuit drives a display panel in response to the second bitmap data received from the display memory.
摘要翻译: 控制器/驱动器由工作存储器,图形引擎,显示存储器和驱动器电路组成。 图形引擎将外部接收的图像数据转换为第一位图数据,并将第一位图数据存储在工作存储器中。 显示存储器接收并存储从存储在工作存储器中的第一位图数据开发的第二位图数据。 驱动电路响应于从显示存储器接收到的第二位图数据来驱动显示面板。
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9.
公开(公告)号:US20100079482A1
公开(公告)日:2010-04-01
申请号:US12586530
申请日:2009-09-23
申请人: Makoto Tsukamoto , Jun Hirai , Ayataka Nishio , Naomasa Takahashi
发明人: Makoto Tsukamoto , Jun Hirai , Ayataka Nishio , Naomasa Takahashi
IPC分类号: G09G5/02
CPC分类号: H04N1/4052 , G09G3/2048 , G09G3/2059
摘要: A gradation conversion device that converts a gradation of an image, includes: dither means for dithering the image by adding random noise to pixel values forming the image; and one-dimensional ΔΣ modulation means for performing one-dimensional ΔΣ modulation on the dithered image.
摘要翻译: 转换图像灰度的灰度转换装置包括:抖动装置,用于通过将形成图像的像素值附加随机噪声来抖动图像; 和一维&Dgr& 调制装置,用于执行一维&Dgr& 对抖动图像进行调制。
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10.
公开(公告)号:US20060038826A1
公开(公告)日:2006-02-23
申请号:US10921003
申请日:2004-08-17
申请人: Scott Daly
发明人: Scott Daly
IPC分类号: G09G5/02
CPC分类号: G09G3/2048 , G09G3/2051 , H04N5/213 , H04N19/90
摘要: A dithering pattern that is generated based on a spatial operation is used for a Bit-Depth Extension (BDE) technique for preventing contouring artifacts in an image displayed by a display having a bit-depth that-is less than the bit-depth of the image. The dithering pattern can be based on achromatic visual model or a spatio-chromatic visual model. The dither pattern is formed by shaping a pseudo-random noise signal by an equivalent noise visual model that is based on an array of pixels. Alternatively, the array of pixels is based on an image, or a determinate array of pixels.
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