Abstract:
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for selecting display primary colors based on comparative energy consumption analysis. According to one aspect, an input is configured to receive image data corresponding to an image frame. The image data includes pixel data associated with at least three input contributing colors (ICCs). Subfield derivation logic is configured to derive for the received image frame a first set of color subfields corresponding to the ICCs and a second set of color subfields including a composite contributing color (CCC) subfield and a set of replacement ICC subfields derived based on the CCC subfield. Power management logic is configured to calculate an energy consumption comparison between the presentation sets of color subfields and to selectively cause the presentation of one of the sets of color subfields based on the calculated energy consumption comparison.
Abstract:
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for enhancing display viewability in high ambient conditions without excessive increase in power consumption. In one aspect, a controller associated with the display device can be configured to obtain an indication of ambient light conditions from an ambient light sensor or from a host device hosting the display device. Upon receiving an image frame, the controller can derive a set of color subfields and determine a bit-depth value for each color subfield based on the obtained indication of current ambient light conditions and mapping data which maps ranges of ambient light to respective bit-depth values on a color subfield by color subfield basis. The controller can then generate a number of subframes for each color subfield based on the respective determined bit-depth value and cause the generated subframes to be displayed.
Abstract:
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying image frames. A smoothing process can be utilized for mitigating image artifacts similar to dynamic false contouring (DFC). In some implementations, were a display to transition from an field specific contributing color (FSCC) having only two component colors to a target FSCC with meaningful intensities of all three component colors, or vice versa, and that target FSCC remained constant over a series of image frames, DFC-like artifacts would be mitigated at the transition by gradually, over a first number of image frames in a series of image frames, reducing the intensities of all component colors of the FSCC to values at or near zero, before gradually increasing the intensities of the component colors included in the target FSCC to their final target values over a remainder of image frames in the series of image frames.
Abstract:
This disclosure provides systems, methods, and apparatus for generating images on a display using a hybrid scalar-vector dithering process. The hybrid scalar-vector dithering process includes a combination of a scalar dithering process and a vector dithering process. In the scalar dithering process, at least one color subfield is dithered based on the data within just that color subfield. In the vector dithering process, data across multiple color subfields is dithered together. In some implementations, the color subfield processed by the scalar dithering process is a composite color subfield, such as white (W), yellow (Y), cyan (C) and magenta (M). The color subfields processed by the vector dithering process can be component color subfields, such as red (R), green (G), and blue (B) color subfields. In some implementations, an identical dither mask is applied in both the vector and scalar portions of the hybrid scalar-vector dithering process.
Abstract:
This disclosure provides systems, methods and apparatus for reducing flicker in display devices. In some image formation processes, a controller can form an image by utilizing a set of color subfields and displaying subframes associated with each of the color subfields. In some implementations, the controller can determine a critical flicker frequency (CFF) associated with each subframe. The CFF for a subframe of a color is the minimum frequency at which the subframe of that color must be illuminated to avoid the perception of flicker by a viewer. If the CFF for any subframe is above an illumination frequency for that subframe, then the controller can employ flicker mitigation measures to reduce the perception of flicker of the subframe. In some implementations, the controller may carry out flicker mitigating measures such as dividing the display of subframes based on environmental factors such as ambient light.
Abstract:
This disclosure provides systems, methods and apparatus for reducing flicker in display devices. In some image formation processes, a controller can form an image by utilizing a set of color subfields in displaying subframes associated with each of the color subfields. In some implementations, the controller may determine whether to divide or split the display of certain subframes based on environmental factors such as ambient light with or without concern for flicker. In some implementations, the controller may determine to divide or split the display of an x-channel subframe based on the ambient light. The controller can monitor the ambient light levels via an ambient light sensor, and compare the ambient light level to an ambient light threshold. If the ambient light levels go below the ambient light threshold, the controller can employ subframe division or splitting.
Abstract:
Systems, methods and apparatus for image formation improve power efficiency of display devices by displaying low resolution composite color subfields. In some implementations, a display controller receives data indicative of a plurality of pixel values included in an image frame and derives a plurality of initial component color subfields. The display controller then derives a composite color subfield including a plurality of common composite color intensity values assigned to respective pixel blocks. Each pixel block is associated with a plurality of pixels. The display controller derives a plurality of updated component color subfields based on the initial component color subfields and the composite color subfield.
Abstract:
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying images using a frame-specific contributing color (FSCC). In one aspect, an input is configured to receive image data corresponding to a current image frame. Contributing color selection logic is configured, based on received image data, to obtain a FSCC for use in conjunction with a set of frame-independent contributing colors (FICCs) to generate the current image frame on a display. In addition, subframe generation logic is configured to process the received image data for the current image frame to generate at least two subframes for each of the FICCs and the obtained FSCC such that an output by the display of the generated subframes results in the display of the current image frame.
Abstract:
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying image frames. A smoothing process can be utilized for mitigating image artifacts similar to dynamic false contouring (DFC). In some implementations, were a display to transition from an field specific contributing color (FSCC) having only two component colors to a target FSCC with meaningful intensities of all three component colors, or vice versa, and that target FSCC remained constant over a series of image frames, DFC-like artifacts would be mitigated at the transition by gradually, over a first number of image frames in a series of image frames, reducing the intensities of all component colors of the FSCC to values at or near zero, before gradually increasing the intensities of the component colors included in the target FSCC to their final target values over a remainder of image frames in the series of image frames.
Abstract:
This disclosure provides systems, methods and apparatus for modulating light to form an image on a display, as well as methods manufacturing such apparatus. The display apparatus includes shutters having asymmetric light obstructing portions extending out from opposing sides of a shutter aperture along an axis of motion of the shutter. Actuators move the shutters laterally along the axis of motion to move the shutter between fully closed, partially open, and fully open states to modulate light, thereby forming an image.