GRAY SCALE DRIVE SEQUENCES FOR PULSE WIDTH MODULATED DISPLAYS
First Claim
Patent Images
1. A method for providing a drive sequence for a pulse width modulated display, the method comprising:
- determining a set of non-binary, non-equal, weighted temporal segments;
assembling the set of segments into a sequence;
identifying segments in the sequence that are active; and
using the sequence to pulse width modulate pixels in a display, wherein a pixel'"'"'s brightness corresponds to the number of active temporal segments in the sequence.
6 Assignments
0 Petitions
Accused Products
Abstract
Methods, apparatus, and systems for generating drive sequences for pulse width modulated displays are described. A pulse width modulated signal that includes a drive sequence of temporal segments that are activated and deactivated to produce a desired gray scale. The temporal segments can be non-binary, non-equally weighted. The drive sequence can also include at least two of the temporal segments are least significant bit segments and the other segments are higher order segments.
-
Citations
27 Claims
-
1. A method for providing a drive sequence for a pulse width modulated display, the method comprising:
-
determining a set of non-binary, non-equal, weighted temporal segments;
assembling the set of segments into a sequence;
identifying segments in the sequence that are active; and
using the sequence to pulse width modulate pixels in a display, wherein a pixel'"'"'s brightness corresponds to the number of active temporal segments in the sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A display comprising:
-
a plurality of pixels;
a voltage controller that provides at least one voltage supply that is applied to the pixels in the display; and
a processor that receives image data and determines a set of non-binary, non-equal, weighted temporal segments based on the image data, and assembles the set of segments into a sequence, wherein selected segments are activated in accordance with a desired brightness level of pixels within the display and the sequence includes at least two least significant bit segments. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A controller for a pulse width modulated display, the controller comprising:
-
a voltage controller that provides at least one voltage supply that is applied to pixels in a display; and
a processor that receives image data and determines a set of non-binary, non-equal, weighted temporal segments based on the image data, and assembles the set of segments into a sequence, wherein selected segments are activated in accordance with a desired brightness level of pixels within the display and the sequence includes at least two least significant bit segments. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
-
Specification