Abstract: A method, computer program product, and system perform DC balancing for a variable refresh rate display panel based on regions. A first portion of a first image is displayed on a first region of a screen of a display device using a spatial inversion pattern and a first polarity of a temporal polarity pattern for the first region of the screen of the display device. A second polarity of a second temporal polarity pattern for a second region of the screen of the display device is determined and a second portion of the first image is displayed on the second region of the screen of the display device using the spatial inversion pattern and the second polarity of the second temporal polarity pattern.

Abstract: A method, computer program product, and system perform gamma correction for a variable refresh rate display panel. An image is received for display on a screen of a display device. The image is adjusted based on gamma correction factors that are dependent on a variable refresh rate of the display device and the adjusted image is output for display on the screen of the display device.

Abstract: A method, computer program product, and system for cursor handling in a variable refresh rate environment are disclosed. The method includes the steps of receiving a first image, combining a cursor at a first position with the first image to produce a first combined image, and displaying the combined image on a variable refresh rate display device. The method also includes the steps of determining that a refresh timeout associated with the variable refresh rate display device has occurred, and then, after determining that a second image has not been generated, combining the cursor at a second position with the first image to produce a second combined image for display. The logic for implementing the method may be included in a graphics processing unit or within the variable refresh rate display device itself.

Abstract: A method, computer program product, and system for selectively disabling temporal dithering is disclosed. The method includes the steps of configuring a display device to refresh utilizing a dynamic refresh rate to display images and selectively disabling temporal dithering of the images based on the dynamic refresh rate. Selectively disabling temporal dithering may comprise determining a dynamic refresh rate associated with a current frame of image data and disabling temporal dithering for the current frame of image data when the dynamic refresh rate is less than a first threshold value, or enabling temporal dithering for the current frame of image data when the dynamic refresh rate is greater than or equal to a second threshold value.

Abstract: A method for driving a display panel having a variable refresh rate is disclosed. The method comprises detecting a condition that results in a charge accumulation in the display panel using an accumulated difference in time duration between frames of positive polarity and frames of negative polarity received from an image source. The DC imbalance is a result of a frame pattern comprising alternating frames of differing polarities, wherein frames of positive polarity within the frame pattern are of a different time duration than frames of negative polarity, and wherein the frame pattern results in an accumulation of charge in pixels of the display panel. The method also comprises correcting for the charge accumulation by disrupting the frame pattern.

Abstract: A method, computer program product, and system for adjusting a dynamic refresh frequency of a display device are disclosed. The method includes the steps of obtaining a current frame duration associated with a first image, computing, based on the current frame duration, a repetition value for a second image, and repeating presentation of the second image on a display device based on the repetition value. The logic for implementing the method may be included in a graphics processing unit or within the display device itself.

Abstract: A system, method, and computer program product are provided for combining low motion blur and variable refresh rate in a display. In one embodiment, a hold-type display is operated in a first mode of operation where the hold-type display is dynamically refreshed such that the hold type display handles updates to image frames at unpredictable times and where for each of the image frames a backlight of the hold-type display is activated for an entire duration of display of the image frame. Additionally, it is determined that at least one predefined condition has been met. Further, in response to the determination, the hold-type display is operated in a second mode of operation where the hold-type display is statically refreshed such that the hold-type display handles updates to image frames at regular intervals and where for each of the image frames the backlight of the hold-type display is flashed.

Abstract: A method for driving a display panel having a variable refresh rate is disclosed. The method comprises receiving a current input frame from an image source. Next, it comprises determining a number of re-scanned frames to insert between the current input frame and a subsequent input frame, wherein the re-scanned frames repeat the input frame, and wherein the number of re-scanned frames depends on the minimum refresh interval (MRI) of the display panel. Further, it comprises calculating respective intervals at which to insert the re-scanned frames between the current input frame and the subsequent input frame. Subsequently, it comprises determining if a charge accumulation in pixels of the display panel has crossed over a predetermined threshold value. Finally, responsive to a determination that the charge accumulation has crossed over a predetermined threshold value, it comprises performing a counter-measure to remediate the charge accumulation.

Abstract: A method, computer program product, and system perform gamma correction for a variable refresh rate display panel. An image is received for display on a screen of a display device. The image is adjusted based on gamma correction factors that are dependent on a variable refresh rate of the display device and the adjusted image is output for display on the screen of the display device.

Abstract: A method, computer program product, and system perform DC balancing for a variable refresh rate display panel based on regions. A first portion of a first image is displayed on a first region of a screen of a display device using a spatial inversion pattern and a first polarity of a temporal polarity pattern for the first region of the screen of the display device. A second polarity of a second temporal polarity pattern for a second region of the screen of the display device is determined and a second portion of the first image is displayed on the second region of the screen of the display device using the spatial inversion pattern and the second polarity of the second temporal polarity pattern.

Abstract: A method, computer program product, and system for cursor handling in a variable refresh rate environment are disclosed. The method includes the steps of receiving a first image, combining a cursor at a first position with the first image to produce a first combined image, and displaying the combined image on a variable refresh rate display device. The method also includes the steps of determining that a refresh timeout associated with the variable refresh rate display device has occurred, and then, after determining that a second image has not been generated, combining the cursor at a second position with the first image to produce a second combined image for display. The logic for implementing the method may be included in a graphics processing unit or within the variable refresh rate display device itself.

Abstract: A liquid crystal display (LCD) overdrive interpolation circuit and method, and an LCD drive system incorporating the circuit or method. In one embodiment, the circuit includes: (1) a diagonal interpolator operable to perform a diagonal interpolation along a diagonal direction in a lookup table based on TO and FROM gray levels and (2) a further interpolator coupled to the diagonal interpolator and operable to perform a further interpolation based on a result of the diagonal interpolation and the FROM gray level.

Abstract: A method for driving a display panel having a variable refresh rate is disclosed. The method comprises receiving a current input frame from an image source. It also comprises determining a first number of re-scanned frames to insert between the current input frame and a subsequent input frame, wherein the re-scanned frames repeat the current input frame, and wherein the determining depends on a minimum refresh interval (MRI) of the display panel. Further, it comprises calculating intervals to insert the first number of re-scanned frames between the current input frame and the subsequent input frame. Further, it comprises scanning the current input frame for display on the display panel. Finally it comprises inserting the first number of re-scanned frames at the respective intervals between the current input frame and the subsequent input frame from the image source, wherein the inserting is operable to reduce charge accumulation in the display panel.

Abstract: In an integrated circuit device, a power circuit for maintaining asserted values on an input output pin of the device when a functional block of the device is placed in a sleep mode. The device includes a power circuit disposed along the periphery of the device, the power circuit configured to maintain power when the device is placed in a low-power mode. A plurality of input output blocks are included in the device and are for receiving external inputs for the integrated circuit device and for providing outputs from the integrated circuit device. The power circuit is coupled to provide power to at least one of the input output blocks to maintain state when the integrated circuit device is in the low-power mode.

Abstract: A method, computer program product, and system for adjusting a dynamic refresh frequency of a display device are disclosed. The method includes the steps of obtaining a current frame duration associated with a first image, computing, based on the current frame duration, a repetition value for a second image, and repeating presentation of the second image on a display device based on the repetition value. The logic for implementing the method may be included in a graphics processing unit or within the display device itself.

Abstract: A method, computer program product, and system for selectively disabling temporal dithering is disclosed. The method includes the steps of configuring a display device to refresh utilizing a dynamic refresh rate to display images and selectively disabling temporal dithering of the images based on the dynamic refresh rate. Selectively disabling temporal dithering may comprise determining a dynamic refresh rate associated with a current frame of image data and disabling temporal dithering for the current frame of image data when the dynamic refresh rate is less than a first threshold value, or enabling temporal dithering for the current frame of image data when the dynamic refresh rate is greater than or equal to a second threshold value.

Abstract: A method for driving a display panel having a variable refresh rate is disclosed. The method comprises receiving a current input frame from an image source. Next, it comprises determining a number of re-scanned frames to insert between the current input frame and a subsequent input frame, wherein the re-scanned frames repeat the input frame, and wherein the number of re-scanned frames depends on the minimum refresh interval (MRI) of the display panel. Further, it comprises calculating respective intervals at which to insert the re-scanned frames between the current input frame and the subsequent input frame. Subsequently, it comprises determining if a charge accumulation in pixels of the display panel has crossed over a predetermined threshold value. Finally, responsive to a determination that the charge accumulation has crossed over a predetermined threshold value, it comprises performing a counter-measure to remediate the charge accumulation.

Abstract: A method for driving a display panel having a variable refresh rate is disclosed. The method comprises receiving a current input frame from an image source. It also comprises determining a first number of re-scanned frames to insert between the current input frame and a subsequent input frame, wherein the re-scanned frames repeat the current input frame, and wherein the determining depends on a minimum refresh interval (MRI) of the display panel. Further, it comprises calculating intervals to insert the first number of re-scanned frames between the current input frame and the subsequent input frame. Further, it comprises scanning the current input frame for display on the display panel. Finally it comprises inserting the first number of re-scanned frames at the respective intervals between the current input frame and the subsequent input frame from the image source, wherein the inserting is operable to reduce charge accumulation in the display panel.

Abstract: A liquid crystal display (LCD) overdrive interpolation circuit and method, and an LCD drive system incorporating the circuit or method. In one embodiment, the circuit includes: (1) a diagonal interpolator operable to perform a diagonal interpolation along a diagonal direction in a lookup table based on TO and FROM gray levels and (2) a further interpolator coupled to the diagonal interpolator and operable to perform a further interpolation based on a result of the diagonal interpolation and the FROM gray level.

Abstract: A method for driving a display panel having a variable refresh rate is disclosed. The method comprises detecting a condition that results in a charge accumulation in the display panel using an accumulated difference in time duration between frames of positive polarity and frames of negative polarity received from an image source. The DC imbalance is a result of a frame pattern comprising alternating frames of differing polarities, wherein frames of positive polarity within the frame pattern are of a different time duration than frames of negative polarity, and wherein the frame pattern results in an accumulation of charge in pixels of the display panel. The method also comprises correcting for the charge accumulation by disrupting the frame pattern.