Image brightness control system
First Claim
Patent Images
1. A method for image brightness control, comprising:
- receiving a video signal comprising pixel image data for display;
receiving a brightness control signal synchronized with the video signal to specify a selected pixel subset in the pixel image data;
determining a brightness adjustment responsive to the brightness control signal; and
enhancing brightness of the selected pixel subset using the brightness adjustment.
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Abstract
A brightness control system enhances a displayed image. The system selectively alters the brightness of a portion of the image to improve the clarity, noticeability, and intelligibility of information provided on the display. When used with a vehicle navigation system, the brightness adjustment system may emphasize vehicle or destination location display, driving directions, route planning information, or other information provided to the driver.
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Citations
25 Claims
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1. A method for image brightness control, comprising:
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receiving a video signal comprising pixel image data for display;
receiving a brightness control signal synchronized with the video signal to specify a selected pixel subset in the pixel image data;
determining a brightness adjustment responsive to the brightness control signal; and
enhancing brightness of the selected pixel subset using the brightness adjustment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An image brightness control system comprising:
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a video signal input for receiving a video signal comprising pixel image data for display;
a brightness control signal input for receiving a brightness control signal synchronized with the video signal to specify a selected pixel subset in the pixel image data; and
modification logic which enhances brightness of the selected pixel subset using a brightness adjustment determined responsive to the brightness control signal. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A vehicle navigation system comprising:
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a memory comprising;
map data; and
a vehicle navigation program which generates a navigation map using the map data;
a display which displays a brightness enhanced video signal comprising pixel image data of the navigation map; and
an image brightness control system coupled to the display, comprising;
a brightness control signal input for receiving a brightness control signal synchronized to a selected pixel subset in the pixel image data; and
modification logic which enhances brightness of the selected pixel subset using a brightness adjustment determined responsive to the brightness control signal, thereby generating the brightness enhanced video signal. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification