Real-time gradation control
OwnerDavid Throup, Michael David Johnsoninventors
Life of this patent
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Abstract
A real-time video data gradation control which modifies each component of the video data as a function of at least one other component and outputs the modified components to drive a monitor.
Claims30
A gradation control device comprising means for receiving input video data comprising a plurality of discrete components, and means for correcting values of a first of said components in accordance with values of a second of said components to generate output video data.
A gradation control device as claimed in any preceding claim, wherein the second component is a colour component.
A gradation control device as claimed in any preceding claim, wherein the input video data is represented with a discrete luminance component and a number of discrete colour components, at least one of the colour components being used to correct one or more of the remaining components.
A gradation control device as claimed in any preceding claim, including an input format converter for converting the format of the input video data to a format comprising said plurality of discrete components.
A gradation control device as claimed in any preceding claim, including an output format converter for converting the output video data to a video display format.
A gradation control device as claimed in any preceding claim, including an output for outputting the output video data to a display.
A gradation control device as claimed in any preceding claim, wherein the at least one component correction is arranged to calculate a component correction value and to combine the component correction value with the respective component of the input video data.
A gradation control device as claimed in any preceding claim wherein the frame rate of the input video data is substantially equal to that of the output video data.
A method of controlling the gradation of video data comprising receiving input video data comprising a plurality of discrete components, correcting values of a first component in accordance with values of a second of said components and using the corrected values of the first component to generate output video data.
A gradation control device as herein described with reference to the accompanying drawings.
Dependencies are inferred from the claim text.