After image reducer
AssigneeQUALCOMM Incorporated
InventorChong U. Lee
Life of this patent
Estimating the term…
Abstract
A method and apparatus for reducing after images in motion video display. In the present invention, an intensity scaled image of a previous frame or set of frames is subtracted from the present frame before displaying the present frame. In the exemplary embodiment, the scaling factor is determined by measuring the intensity of the after image for the display device. In a preferred embodiment, the after image reduction system of the present invention takes into account the nonlinearities of the display device. That is the nonlinear relationship between the voltage applied to a display device and the intensity of the resulting display.
Claims30
A motion video processing apparatus, comprising:
- reduction means for receiving a frame of motion video data and processing said frame of motion video data in accordance with an after image estimate to provide an after image reduced frame of video data;
- and
- after image prediction means for receiving said processed frame of video data and for generating said after image estimate in accordance with a predetermined after image prediction format.
A method for motion video processing, comprising the steps of:
- processing said frame of motion video data in accordance with an after image estimate to provide an after image reduced frame of video data;
- and
- generating said after image estimate in accordance with a predetermined after image prediction format.
A motion video processing system, comprising:
- subtractor having a first input for receiving motion video data and having a second input for receiving an after image estimate and having an output;
- and
- residual prediction calculator having an input coupled to said subtractor output and having an output coupled to said second subtractor input.
A motion video processing system comprising:
- frame buffer means for storing a processed frame of motion video data;
- and
- look-up means for receiving a frame of motion video data and said stored processed frame of video data and for outputting a subsequent frame of processed motion video data in accordance with said frame of motion video data and said stored processed frame of video data in accordance with an after image estimation lookup format.
Dependencies are inferred from the claim text.