Method and apparatus to synchronize backlight intensity changes with image luminance changes
First Claim
1. A method comprising:
- in response to determining that a display-related event has occurred during a vertical frame period indicating that an associated change to at least one of a backlight intensity and an image luminance are to be undertaken, enabling an interrupt; and
during subsequent interrupt processing, applying corresponding changes to the backlight intensity and the image luminance in a coordinated manner.
1 Assignment
0 Petitions
Accused Products
Abstract
An approach for coordinating backlight intensity and image luminance changes. For one aspect, in response to determining that a display-related event has occurred during a vertical frame period indicating a subsequent change associated with at least one of a backlight intensity and a frame buffer palette is to be undertaken, an interrupt is enabled. During subsequent interrupt processing, associated changes to the backlight intensity and the frame buffer palette are applied in a coordinated manner. For a specific implementation, an approach is provided for a graphics controller driver to synchronize response to changes in display backlight, color-space controls, and in the luminance of images, wherein said changes can come from different sources, occur at a different rates, and have different latencies, for the purpose of applying graphics settings responses such that those effects occur at a visually co-incident interval so as to substantially minimize discordant visual artifacts.
-
Citations
27 Claims
-
1. A method comprising:
-
in response to determining that a display-related event has occurred during a vertical frame period indicating that an associated change to at least one of a backlight intensity and an image luminance are to be undertaken, enabling an interrupt; and
during subsequent interrupt processing, applying corresponding changes to the backlight intensity and the image luminance in a coordinated manner. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method comprising:
-
enabling an interrupt if at least a first display-related dirty flag has been set during a vertical frame period; and
in response to the interrupt, applying associated changes to a backlight intensity and an image luminance in a coordinated manner. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
-
-
15. A method comprising:
-
in response to an interrupt being asserted and determining that a display-related dirty flag is set, calculating new values for a backlight intensity and a gamma look-up table;
applying associated changes to the backlight;
initiating a delay count; and
applying associated changes to the gamma look-up table upon expiration of the delay count. - View Dependent Claims (16, 17)
-
-
18. A computer-accessible medium storing information that, when accessed by a computer, causes the computer to
in response to determining that a display-related event has occurred during a vertical frame period indicating that an associated change to at least one of a backlight intensity and an image luminance are to be undertaken, enable an interrupt; - and
during subsequent interrupt processing, apply corresponding changes to the backlight intensity and the image luminance in a coordinated manner. - View Dependent Claims (19, 20, 21, 22, 23)
- and
-
24. A system comprising:
-
a bus;
a processor coupled to the bus to execute instructions;
a display coupled to the processor;
an antenna coupled to receive information for the processor over a wireless interconnect; and
a memory coupled to the processor to store instructions that, when executed by the processor, cause the processor to enable an interrupt in response to detecting a display-related event; and
apply changes to a display backlight setting and an image luminance associated with the display-related event in a coordinated manner such that the changes take effect at substantially a same time. - View Dependent Claims (25, 26, 27)
-
Specification