Abstract:
The disclosure describes procedures for dynamically employing a variable refresh rate at an LCD display of a consumer electronic device, such as a laptop computer, a tablet computer, a mobile phone, or a music player device. In some configurations, the consumer electronic device can include a host system portion, having one or more processors and a display system portion, having a timing controller, a buffer circuit, a display driver, and a display panel. The display system can receive image data and image control data from a GPU of the host system, evaluate the received image control data to determine a reduced refresh rate (RRR) for employing at the display panel, and then transition to the RRR, whenever practicable, to conserve power. In some scenarios, the transition to the RRR can be a transition from a LRR of 50 hertz or above to a RRR of 40 hertz or below.
Abstract:
A method and system for an inversion driving scheme for pixels in a display. Column drivers may drive first voltages to columns of a pixel array in a display during a first period of a frame and drive inverses of the first voltages to columns of the pixel array during a second period of a frame. Row drivers may alternately drive even and odd rows during the first and seconds periods. Additionally, data for display on the display may be arranged such that data is transmitted to the odd and even rows of pixels in conj unction with the alternate activation of the rows and columns. This data rearrangement may be accomplished through the use of a graphics processing unit or local frame buffer coupled with a timing controller.
Abstract:
A method is provided for compensating for brightness change in a display. The method includes storing a plurality of look-up tables (LUTs), where each table has a plurality of pixel levels at a variable refresh rate (VRR) and a plurality of brightness signals that provide compensation for the brightness change when refresh rate is changed during a panel self-refresh (PSR). The method also includes receiving an input signal from a graphics processing unit (GPU) and determining the VRR of the input signal from the GPU. The method further includes obtaining the LUT at the determined VRR of the input signal and adjusting the input signal to produce an output signal that compensates for the brightness change for each pixel or sub-pixel in a timing controller based upon the LUT at the determined VRR. The method further includes transmitting the output signal to the display. A system is also provided.
Abstract:
Systems, methods, and device are provided to provide inversion techniques for dynamic variable refresh rate electronic displays. One embodiment of the present disclosure describes An electronic display including a display panel that display images with varying refresh rates and a timing controller that receives image data from an image source, determines a counter value, and instructs a driver in the electronic display to apply a voltage to the display panel to write an image on the display panel, in which a negative voltage is applied when the counter value is positive and a positive voltage is applied when the counter value is less than or equal to zero. Additionally, the timing controller update the counter value based at least in part on duration the image is displayed on the display panel, wherein the counter value increases when the voltage is positive and decreases when the voltage is negative.
Abstract:
A method for reducing power consumption of an electronic display (12) is provided. In one embodiment, the method includes transmitting data packets (190, 192, 194, 196) over a data channel (156, 162) between a timing controller (86) and a column driver (88) of the display (12). Data transmission modes may be read from headers (198) of the data packets (190, 192, 194, 196), and image data of the packets (190, 192, 194, 196) may be processed at the column driver (88) based on their respective data transmission modes. Further, the data channel (156, 162) may be intermittently deactivated during transmission of the data packets (190, 192, 194, 196) based on their respective data transmission modes. Additional methods, systems, and devices relating to electronic displays (12) are also disclosed.
Abstract:
A method is provided for compensating for brightness change in a display. The method includes storing a plurality of look-up tables (LUTs), where each table has a plurality of pixel levels at a variable refresh rate (VRR) and a plurality of brightness signals that provide compensation for the brightness change when refresh rate is changed during a panel self-refresh (PSR). The method also includes receiving an input signal from a graphics processing unit (GPU) and determining the VRR of the input signal from the GPU. The method further includes obtaining the LUT at the determined VRR of the input signal and adjusting the input signal to produce an output signal that compensates for the brightness change for each pixel or sub-pixel in a timing controller based upon the LUT at the determined VRR. The method further includes transmitting the output signal to the display. A system is also provided.
Abstract:
A method for reducing power consumption of an electronic display is provided. In one embodiment, the method includes transmitting data packets over a data channel between a timing controller and a column driver of the display. Data transmission modes may be read from headers of the data packets, and image data of the packets may be processed at the column driver based on their respective data transmission modes. Further, the data channel may be intermittently deactivated during transmission of the data packets based on their respective data transmission modes. Additional methods, systems, and devices relating to electronic displays are also disclosed.
Abstract:
The disclosure describes procedures for dynamically employing a variable refresh rate at an LCD display of a consumer electronic device, such as a laptop computer, a tablet computer, a mobile phone, or a music player device. In some configurations, the consumer electronic device can include a host system portion, having one or more processors and a display system portion, having a timing controller, a buffer circuit, a display driver, and a display panel. The display system can receive image data and image control data from a GPU of the host system, evaluate the received image control data to determine a reduced refresh rate (RRR) for employing at the display panel, and then transition to the RRR, whenever practicable, to conserve power. In some scenarios, the transition to the RRR can be a transition from a LRR of 50 hertz or above to a RRR of 40 hertz or below.
Abstract:
Systems, methods, and device are provided to provide inversion techniques for dynamic variable refresh rate electronic displays. One embodiment of the present disclosure describes An electronic display including a display panel that display images with varying refresh rates and a timing controller that receives image data from an image source, determines a counter value, and instructs a driver in the electronic display to apply a voltage to the display panel to write an image on the display panel, in which a negative voltage is applied when the counter value is positive and a positive voltage is applied when the counter value is less than or equal to zero. Additionally, the timing controller update the counter value based at least in part on duration the image is displayed on the display panel, wherein the counter value increases when the voltage is positive and decreases when the voltage is negative.