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    • 4. 发明申请
    • CONTENT UPDATE FROM A DISPLAY DRIVER IN MOBILE APPLICATIONS
    • 移动应用程序中的显示驱动程序的内容更新
    • WO2016014171A1
    • 2016-01-28
    • PCT/US2015/035825
    • 2015-06-15
    • QUALCOMM MEMS TECHNOLOGIES, INC.
    • TAVAKOLI, HamidCUMMINGS, WilliamWANG, Shen-GeVAN LIER, Wilhelmus, Johannes, Robertus
    • G09G5/36G09G5/395
    • G09G5/18G06T9/00G09G5/363G09G5/395G09G2310/04G09G2330/021G09G2340/02G09G2360/18
    • Various display device implementations disclosed herein include display drivers with enhanced capabilities. In some implementations a display driver may be capable of updating a display while a central processing unit (CPU) is switched off or operating in a sleep mode. Some such display drivers may include a display driver clock and a display driver memory. The display driver may be capable of receiving image data from the CPU, including image data for display updates, and storing received image data in the display driver memory. The display driver may be capable of updating the display with stored image data at times indicated by the display driver clock. Some display drivers may include a graphics processing unit capable of generating image data for updates of the display. In some such implementations, the graphics processing unit may be capable of dithering image data.
    • 本文公开的各种显示设备实现包括具有增强功能的显示驱动器。 在一些实现中,当中央处理单元(CPU)关闭或以睡眠模式操作时,显示驱动器可能能够更新显示器。 一些这样的显示驱动器可以包括显示驱动器时钟和显示驱动器存储器。 显示驱动器可以能够从CPU接收图像数据,包括用于显示更新的图像数据,以及将接收的图像数据存储在显示驱动器存储器中。 显示驱动器可能能够在由显示驱动器时钟指示的时间处更新具有存储的图像数据的显示。 一些显示驱动器可以包括能够生成用于更新显示器的图像数据的图形处理单元。 在一些这样的实现中,图形处理单元可以能够抖动图像数据。
    • 6. 发明申请
    • SYSTEM AND METHOD FOR VECTOR ERROR DIFFUSION
    • 用于向量误差扩散的系统和方法
    • WO2015187303A1
    • 2015-12-10
    • PCT/US2015/029936
    • 2015-05-08
    • QUALCOMM MEMS TECHNOLOGIES, INC.
    • CAI, SongheWANG, Shen-Ge
    • H04N1/52G09G3/20
    • H04N1/4052G09G3/2003H04N1/52
    • The systems and methods described herein may be used to optimize vector error diffusion for displaying color images on a display device. Vector error diffusion passes a residual vector error from one pixel on to its neighboring pixels with varying weights. The direction and weight of error diffusion can be defined by a vector error diffusion filter. Using a vector error diffusion filter with a limited number of taps allows an a priori determination of which pixel vector is dependent on which pixel vector error at what times. Based on such dependency determination, vector error diffusion calculation for multiple pixels can be scheduled to optimize computation time while preserving the dependency. The scheduled vector error diffusion calculation can further be implemented in virtual pipeline with multiple stages to balance computation load and utilize hardware resource efficiently.
    • 本文描述的系统和方法可用于优化用于在显示设备上显示彩色图像的矢量误差扩散。 矢量误差扩散将剩余矢量误差从一个像素传递到具有不同权重的其相邻像素。 误差扩散的方向和重量可以由矢量误差扩散滤波器定义。 使用具有有限数量的抽头的向量误差扩散滤波器允许先验确定哪个像素矢量依赖于哪个像素向量误差在什么时间。 基于这种相关性确定,可以调度多个像素的向量误差扩散计算,以优化计算时间,同时保持依赖性。 可以进一步在具有多个阶段的虚拟管线中实现预定向量误差扩散计算,以平衡计算负荷,有效利用硬件资源。