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US 7,746,303 B2Granted
Method and apparatus for extending the color depth of displays
AssigneeHoneywell International Inc.
InventorsAndrei Cernasov, Fernando R. De La Vega, Donald J. Porawski
Life of this patent
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Abstract
A method of extending color depth in a display includes determining pixel sub-intervals for pixel intervals in a video signal, modulating a transmissivity of a display panel of the display from one sub-interval to another sub-interval, and modulating backlight intensity of a backlight from the one sub-interval to the another sub-interval.
Claims20
A display with extended color depth, comprising:
- a light source;
- a light source driver coupled to the light source;
- a transmissive display panel disposed adjacent to the light source;
- a display panel control circuit coupled to the display panel;
- and
- a dithering circuit coupled to the light source driver and display panel control circuit, the dithering circuit comprising:
- logic for determining pixel sub-intervals for pixel intervals in a video signal, logic for modulating a transmissivity of the display panel from one sub-interval to another sub-interval, and logic for modulating light source intensity from the one sub-interval to the another sub-interval.
4 more elements
A method of extending color depth in a display, comprising:
- determining pixel sub-intervals for pixel intervals in a video signal;
- modulating a transmissivity of a display panel of the display from one sub-interval to another sub-interval and in synchronization with the determined pixel sub-intervals;
- and
- modulating backlight intensity of a backlight from the one sub-interval to the another sub-interval and in synchronization with the determined pixel sub-intervals.
1 more element
A method of extending color depth in a display, comprising:
- determining pixel sub-intervals for pixel intervals in a video signal;
- determining a light source modulation for the pixel sub-intervals;
- modulating intensity of a light source based on the light source modulation;
- and
- synchronizing a transmittance of a display panel of the display with the light source modulation for each sub-interval.
2 more elements
Dependencies are inferred from the claim text.