公开(公告)号：WO2013040034A1

公开(公告)日：2013-03-21

申请号：PCT/US2012/054864

申请日：2012-09-12

Applicant: QUALCOMM MEMS TECHNOLOGIES, INC. ,  LEE, Jeho ,  PARMAR, Manu ,  GILLE, Jennifer Lee

Inventor： LEE, Jeho ,  PARMAR, Manu ,  GILLE, Jennifer Lee

IPC: G09G3/34 ,  G09G3/20

CPC classification number: G09G3/2044 ,  G02B26/001 ,  G09G3/2059 ,  G09G3/2077 ,  G09G3/3466 ,  G09G2300/0469 ,  G09G2310/0208 ,  G09G2320/0247 ,  G09G2320/103 ,  G09G2340/16

Abstract: This disclosure provides techniques related to halftoning video images for display on an electronic device. The techniques include adaptively selecting, on a pixel- by-pixel basis, between a mask-based dithering (MBD) and an error diffusion (ED) halftoning technique. The ED technique may be selected for halftoning pixels of an input frame of data having either a temporal change rate metric (CRM) or a spatial CRM exceeding a respective threshold. Where both the temporal CRM and spatial CRM are less than the respective thresholds, halftoning may be performed by the technique that produces a halftone value closer to a comparison halftone value of a comparison frame. The comparison frame may be a preceding frame, or an immediately preceding frame.

Abstract translation: 本公开提供了相关于将视频图像半色调以在电子设备上显示的技术。 这些技术包括在逐个像素的基础上自适应地选择基于掩码的抖动（MBD）和误差扩散（ED）半色调技术。 可以选择ED技术来对具有时间变化率度量（CRM）或超过相应阈值的空间CRM的数据的输入帧的像素进行半色调处理。 在时间CRM和空间CRM都小于相应阈值的情况下，半色调可以通过产生更接近比较帧的比较半色调值的半色调值的技术来执行。 比较帧可以是前一帧或紧邻的帧。

公开(公告)号：WO2012125374A2

公开(公告)日：2012-09-20

申请号：PCT/US2012028103

申请日：2012-03-07

Applicant: QUALCOMM MEMS TECHNOLOGIES INC ,  PARMAR MANU ,  AFLATOONI KOOROSH ,  CUMMINGS WILLIAM J

Inventor： PARMAR MANU ,  AFLATOONI KOOROSH ,  CUMMINGS WILLIAM J

IPC: G09G3/34

CPC classification number: G09G3/3466 ,  G09G3/2003 ,  G09G2320/0606 ,  G09G2320/0666 ,  G09G2320/0693

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for tuning the white point of a display device. In one aspect, a display device includes a set of display elements configured to output light and electronics configured to drive the display elements. Each display element can have an on-state where a reflective surface can be positioned at a distance from a partially reflective surface such that the display element can reflect incident light. Each distance can be dependent on a bias voltage. At least one of the bias voltages for the display elements can be non-zero in the on-state, and one or more of the bias voltages may be adjustable to control a white point of the display device. The electronics can be electrically connected to the display elements to provide the at least one non-zero bias voltage.

Abstract translation: 本公开提供了系统，方法和装置，包括在计算机存储介质上编码的计算机程序，用于调整显示装置的白点。 在一个方面，一种显示设备包括一组被配置为输出光的显示元件和被配置为驱动显示元件的电子元件。 每个显示元件可以具有导通状态，其中反射表面可以被定位在与部分反射表面一定距离处，使得显示元件可以反射入射光。 每个距离都可以取决于偏置电压。 显示元件的偏置电压中的至少一个在导通状态下可以非零，并且一个或多个偏置电压可以是可调节的，以控制显示装置的白点。 电子器件可以电连接到显示元件以提供至少一个非零偏置电压。

公开(公告)号：WO2013039909A1

公开(公告)日：2013-03-21

申请号：PCT/US2012/054655

申请日：2012-09-11

Applicant: QUALCOMM MEMS TECHNOLOGIES, INC. ,  LEE, Jeho ,  PARMAR, Manu ,  GILLE, Jennifer Lee

Inventor： LEE, Jeho ,  PARMAR, Manu ,  GILLE, Jennifer Lee

IPC: G09G3/20 ,  G09G3/34

CPC classification number: G09G3/2044 ,  G02B26/001 ,  G09G3/2059 ,  G09G3/2077 ,  G09G3/3466 ,  G09G2300/0469 ,  G09G2310/0208 ,  H04N1/4052

Abstract: This disclosure provides methods, apparatus, and computer programs encoded on computer storage media for tone based halftoning of digital images. By exploiting knowledge of local image features and tone levels, the halftoning method may be adaptively switched between error-diffusion and mask-based dithering with reduced boundary artifacts. By further utilizing a smart quantization error clipping scheme, artifacts inherent to the method of error diffusion are also reduced. The method consistently generates higher quality halftone images for both still and video applications when compared to conventional methods.

Abstract translation: 本公开提供了在计算机存储介质上编码的用于基于色调的数字图像半色调的方法，装置和计算机程序。 通过利用局部图像特征和音调级别的知识，半色调方法可以在具有减少的边界伪像的误差扩散和基于掩码的抖动之间自适应地切换。 通过进一步利用智能量化误差削波方案，还减少了误差扩散方法固有的伪像。 与常规方法相比，该方法始终为静止和视频应用产生更高质量的半色调图像。

公开(公告)号：WO2012125407A1

公开(公告)日：2012-09-20

申请号：PCT/US2012/028297

申请日：2012-03-08

Applicant: QUALCOMM MEMS TECHNOLOGIES, INC. ,  PARMAR, Manu ,  GILLE, Jennifer Lee ,  LEWIS, Alan

Inventor： PARMAR, Manu ,  GILLE, Jennifer Lee ,  LEWIS, Alan

IPC: G09G3/20

CPC classification number: G09G3/2051 ,  G09G3/2048 ,  G09G3/3466 ,  G09G2300/0473 ,  G09G2300/06 ,  G09G2340/0414

Abstract: This disclosure provides systems, methods and apparatus including computer programs encoded on computer storage media for producing line multiplied images with better visual appearance. In one aspect, before lines of the image are multiplied, they are dithered with a noise signal that increases faster with higher frequency along the multiplied dimension of the image data than along the non multiplied dimension of the image. This results in a line multiplied image was improved image quality.

Abstract translation: 该公开内容提供了包括在计算机存储介质上编码的计算机程序的系统， 在一个方面，在图像的行被乘以之前，它们被抖动，噪声信号随着沿图像数据的相乘维度的高频而比图像的非乘法尺寸更高的频率增加。 这导致一个行倍增图像的图像质量得到提高。

公开(公告)号：WO2012125343A2

公开(公告)日：2012-09-20

申请号：PCT/US2012/027879

申请日：2012-03-06

Applicant: QUALCOMM MEMS TECHNOLOGIES, INC. ,  PARMAR, Manu ,  GILLE, Jennifer Lee ,  LEWIS, Alan

Inventor： PARMAR, Manu ,  GILLE, Jennifer Lee ,  LEWIS, Alan

IPC: G09G3/34 ,  G09G3/20

CPC classification number: G09G3/3466 ,  G09G3/2044 ,  G09G3/2048 ,  G09G2310/0205 ,  G09G2310/04 ,  G09G2320/0261 ,  G09G2320/0613 ,  G09G2320/103 ,  G09G2340/0435

Abstract: Systems, methods and apparatus including computer programs encoded on computer storage media optimize display image quality under a variety of imaging environments. Dynamic frame streams such as those present in video applications may require a higher frame rate to adequately convey motion in the stream. A line multiplying image pipeline may be utilized for dynamic frames, which lowers the resolution of the displayed image. When dithering line multiplied images, a noise signal including asymmetrical high frequency components around zero frequency may be utilized. The display of static frames, such as photographs, may be achieved with acceptable image quality using a relatively lower display frame rate. Such a frame rate may enable the display of a high resolution image. A noise signal tailored for higher resolution, non line multiplied frames, such as a noise signal with symmetric high frequency components around zero frequency may be utilized for static frames.

Abstract translation: 包括在计算机存储介质上编码的计算机程序的系统，方法和装置在各种成像环境下优化显示图像质量。 诸如在视频应用中存在的动态帧流可能需要更高的帧速率来充分地传送流中的运动。 行乘法图像管线可以用于动态帧，这降低了显示图像的分辨率。 当抖动线倍增图像时，可以利用包括零频率周围的不对称高频分量的噪声信号。 可以使用相对较低的显示帧速率，以可接受的图像质量来实现诸如照片的静态帧的显示。 这样的帧速率可以实现高分辨率图像的显示。 针对较高分辨率，非线相乘帧（例如具有零频率附近的对称高频分量的噪声信号）的噪声信号可用于静态帧。

公开(公告)号：WO2012054511A1

公开(公告)日：2012-04-26

申请号：PCT/US2011/056748

申请日：2011-10-18

Applicant: QUALCOMM MEMS TECHNOLOGIES, INC. ,  PARMAR, Manu ,  GILLE, Jennifer, L. ,  CUMMINGS, William, J. ,  AFLATOONI, Koorosh

Inventor： PARMAR, Manu ,  GILLE, Jennifer, L. ,  CUMMINGS, William, J. ,  AFLATOONI, Koorosh

IPC: G09G3/34

CPC classification number: G09G3/3466 ,  G09G3/20 ,  G09G3/2044 ,  G09G2310/0205 ,  G09G2310/0218 ,  G09G2310/0254 ,  G09G2310/04 ,  G09G2320/103 ,  G09G2340/0414 ,  G09G2360/16

Abstract: This disclosure provides systems, methods and apparatus including computer programs encoded on computer storage media for producing line multiplied images with better visual appearance. The line multiplying is shifted for one of the colors of the display with respect to at least one other color of the display.

Abstract translation: 该公开内容提供了包括在计算机存储介质上编码的计算机程序的系统， 相对于显示器的至少一个其他颜色，行乘法针对显示器的颜色之一移动。

公开(公告)号：WO2012125343A3

公开(公告)日：2012-11-08

申请号：PCT/US2012027879

申请日：2012-03-06

Applicant: QUALCOMM MEMS TECHNOLOGIES INC ,  PARMAR MANU ,  GILLE JENNIFER LEE ,  LEWIS ALAN

Inventor： PARMAR MANU ,  GILLE JENNIFER LEE ,  LEWIS ALAN

IPC: G09G3/34 ,  G09G3/20

CPC classification number: G09G3/3466 ,  G09G3/2044 ,  G09G3/2048 ,  G09G2310/0205 ,  G09G2310/04 ,  G09G2320/0261 ,  G09G2320/0613 ,  G09G2320/103 ,  G09G2340/0435

Abstract: Systems, methods and apparatus including computer programs encoded on computer storage media optimize display image quality under a variety of imaging environments. Dynamic frame streams such as those present in video applications may require a higher frame rate to adequately convey motion in the stream. A line multiplying image pipeline may be utilized for dynamic frames, which lowers the resolution of the displayed image. When dithering line multiplied images, a noise signal including asymmetrical high frequency components around zero frequency may be utilized. The display of static frames, such as photographs, may be achieved with acceptable image quality using a relatively lower display frame rate. Such a frame rate may enable the display of a high resolution image. A noise signal tailored for higher resolution, non line multiplied frames, such as a noise signal with symmetric high frequency components around zero frequency may be utilized for static frames.

Abstract translation: 包括在计算机存储介质上编码的计算机程序的系统，方法和装置优化了各种成像环境下的显示图像质量。 诸如视频应用中存在的动态帧流可能需要更高的帧速率以充分传送流中的运动。 行乘图像流水线可以用于动态帧，这降低了显示图像的分辨率。 当抖动线相乘图像时，可以使用包括零频率附近的非对称高频分量的噪声信号。 可以使用相对较低的显示帧速率以可接受的图像质量来实现诸如照片的静态帧的显示。 这种帧速率可以使得能够显示高分辨率图像。 针对较高分辨率的非线性相乘帧（诸如具有零频率附近的对称高频分量的噪声信号）而定制的噪声信号可用于静态帧。

公开(公告)号：WO2012125374A3

公开(公告)日：2012-09-20

申请号：PCT/US2012/028103

申请日：2012-03-07

Applicant: QUALCOMM MEMS TECHNOLOGIES, INC. ,  PARMAR, Manu ,  AFLATOONI, Koorosh ,  CUMMINGS, William J.

Inventor： PARMAR, Manu ,  AFLATOONI, Koorosh ,  CUMMINGS, William J.

IPC: G09G3/34

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for tuning the white point of a display device. In one aspect, a display device includes a set of display elements configured to output light and electronics configured to drive the display elements. Each display element can have an on-state where a reflective surface can be positioned at a distance from a partially reflective surface such that the display element can reflect incident light. Each distance can be dependent on a bias voltage. At least one of the bias voltages for the display elements can be non-zero in the on-state, and one or more of the bias voltages may be adjustable to control a white point of the display device. The electronics can be electrically connected to the display elements to provide the at least one non-zero bias voltage.

公开(公告)号：WO2013025605A1

公开(公告)日：2013-02-21

申请号：PCT/US2012/050573

申请日：2012-08-13

Applicant: QUALCOMM MEMS TECHNOLOGIES, INC. ,  PARMAR, Manu ,  GILLE, Jennifer Lee ,  AFLATOONI, Koorosh

Inventor： PARMAR, Manu ,  GILLE, Jennifer Lee ,  AFLATOONI, Koorosh

IPC: H04N1/56 ,  H04N1/40 ,  G09G3/20 ,  H04N7/26 ,  H04N7/30

CPC classification number: H04N1/644 ,  G09G3/2048 ,  H04N1/40087 ,  H04N1/56 ,  H04N19/60 ,  H04N19/86 ,  H04N19/90

Abstract: This disclosure provides implementations of dither-aware image coding processes, devices, apparatus, and systems. In one aspect, a portion of received image data is selected. First spatial domain values in the selected portion of the image data are transformed to first transform domain coefficients. Second spatial domain values in a designated dither matrix are transformed to second transform domain coefficients. A ratio of each of the first transform domain coefficients to a respective second transform domain coefficient is determined. The first transform domain coefficients are selectively coded in accordance with the determined ratios to define coded first transform domain coefficients. A reverse transformation is performed to transform the coded first transform domain coefficients to third spatial domain values defining a coded portion of the image data. By way of example, transformations such as discreet cosine transforms or discreet wavelet transforms can be used.

Abstract translation: 本公开提供了抖动感知图像编码处理，设备，装置和系统的实现。 在一个方面，选择接收的图像数据的一部分。 将图像数据的所选部分中的第一空间域值转换为第一变换域系数。 将指定的抖动矩阵中的第二空间域值转换为第二变换域系数。 确定每个第一变换域系数与相应的第二变换域系数的比率。 根据所确定的比率选择性地编码第一变换域系数以定义经编码的第一变换域系数。 执行逆变换以将编码的第一变换域系数变换为定义图像数据的编码部分的第三空间域值。 作为示例，可以使用诸如离散余弦变换或离散小波变换之类的变换。