Abstract:
Systems, apparatus, and methods are disclosed herein for displaying images. One such apparatus includes an input, subfield derivation logic, subframe generation logic, dark subframe detection logic, and output logic. The input is configured to receive image data associated with an image frame. The subfield derivation logic is configured to derive at least one color subfield for the received image frame. The subframe generation logic is configured to generate a plurality of subframes for each of the at least one derived color subfields. The dark subframe detection logic is configured to identify dark subframes. The output logic is configured to, in response to identification of a dark subframe, suppress the outputting of the dark subframe and to modify a display parameter associated with at least one other subframe based on a timing value associated with the identified dark subframe.
Abstract:
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying images using at least five contributing colors (CCs). The at least five CCs include three input contributing colors (ICCs) and at least two composite contributing colors (CCCs). Each CCC is formed from the combination of at least two of the ICCs. According to one aspect, an input is configured to receive image data corresponding to an image frame, where the image data includes pixel intensity values for each of three ICCs. Subfield derivation logic is configured to process the received image data for the image frame to derive color subfields for the three ICCs and the at least two CCCs, and output logic is configured to output the color subfields for the at least five CCs to a plurality of display elements for display of the image frame.
Abstract:
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for compensating for slow light modulator transitions in a display device due to opposing motion events. In an opposing motion event, portions of respective pairs of neighboring light modulators are to be driven in opposite directions simultaneously. In one aspect, a controller associated with the display device can be configured to determine light modulator transitions associated with displaying an image frame based on at least two subframes associated with the image frame. The controller can identify one or more opposing motion events based on the determined light modulator transitions. The controller can obtain an output sequence parameter for displaying the image frame based on the identified one or more motion events, and cause the image frame to be displayed according to the obtained output sequence.
Abstract:
This disclosure provides systems, methods, non-transitory computer readable storage media, and apparatus for displaying images using hue-based frame-specific contributing colors (FSCCs). 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 set of FSCCs for use in conjunction with a set of frame-independent contributing colors (FICCs) to generate the current or a subsequent image frame on a display. The set of FSCCs are obtained from determining the dominant hues in the image frame. The image frame is displayed such that subframes associated with displaying the FSCCs have weights that are greater than the subframes associated with displaying the FICCs.
Abstract:
This disclosure provides systems, methods and apparatus for image displays incorporating color selective reflectors. The display apparatus includes a substantially monochromatic light source capable of outputting a substantially monochromatic light. The display apparatus incorporates a color conversion material capable of converting at least a portion of the substantially monochromatic light output by the substantially monochromatic light source into light associated with at least one subfield color. The display device also includes a plurality of pixels, each pixel including at least two color-selective reflectors, each color-selective reflector being capable of passing light of a respective subfield color and reflecting light associated with at least two other subfield colors.
Abstract:
This disclosure provides systems, methods and apparatus for a laser-pumped phosphor backlight for display devices. In one aspect, a display includes a laser backlight configured to emit light, a plurality of phosphors that emit light at a respective wavelength when stimulated by light emitted by the laser backlight, and a waveguide including a diffraction grating positioned between the laser backlight and the plurality of phosphors. In some implementations, the diffraction grating may be configured to direct the light emitted by the laser backlight at a different intensity for each of the plurality of phosphors. For example, the diffraction grating may direct the light at different intensities for each of the plurality of phosphors by generating a diffraction pattern such that the light emitted by the laser backlight is distributed at different relative intensities for each of the plurality of phosphors.
Abstract:
This disclosure provides systems, methods and apparatus for improving light output resolution of a backlight by individually controlling light sources in the backlight. Illumination intensity levels of light sources are individually controlled such that an overall illumination intensity level of all the light sources is substantially equal to a desired whole backlight illumination intensity value. The individual illumination levels of the light sources or a group of the light sources is controlled such that the backlight is uniformly illuminated. In some implementations, the illumination intensity levels are varied over different portions of an illumination period to provide uniform illumination of the backlight.
Abstract:
This disclosure provides systems, methods, non-transitory computer readable storage media, and apparatus for displaying images using hue-based frame-specific contributing colors (FSCCs). 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 set of FSCCs for use in conjunction with a set of frame-independent contributing colors (FICCs) to generate the current or a subsequent image frame on a display. The set of FSCCs are obtained from determining the dominant hues in the image frame. The image frame is displayed such that subframes associated with displaying the FSCCs have weights that are greater than the subframes associated with displaying the FICCs.
Abstract:
This disclosure provides systems, methods and apparatus for improving power efficiency of display devices. Control logic of a display device can use content adaptive backlight control (CABC) for displaying certain image frames with reduced illumination intensity. CABC can be used to determine a scaling factor for scaling up pixel values in an image frame and for scaling down the illumination intensity of a backlight used for illuminating the image frames. The control logic can determine a number of image subframes that have been rendered imperceptible to the human visual system (HVS) due to the reduced illumination intensity of the backlight, and refrain from displaying the determined number of image subframes. The control logic can utilize the additional time made available as a result of not displaying the determined number of subframes to further improve the power efficiency of the display device and/or improve image quality.
Abstract:
This disclosure provides systems, methods, non-transitory computer readable media and apparatus for improving power efficiency of display devices. Control logic of a display device can reduce a number of subframes used to display a series of image frames. In some implementations, the control logic can detect a scene change in the series of image frames and reduce the number of subframes utilized for displaying a following image frame. Subsequently, the control logic can monotonically increase the number of subframes utilized for displaying a first set of successive image frames. In some implementations, the control logic may monotonically increase the number of subframes for a first set of image frames and then monotonically decrease the number of subframes for a second set of image frames.