Projection device and image processing module
AssigneeCoretronic Corporation
InventorsPen-Ning Kuo, Hai-Wei Wang, Te-Sung Su
Life of this patent
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Abstract
A projection device and an image processing module are provided. The image processing module is configured to receive an image signal. The image signal includes multiple sub-image signals. Each of the sub-image signals corresponds to multiple pixels. The pixels form a pixel shifting unit. The image processing module generates flicker data based on contrast in the pixel shifting unit, and generates an output image signal based on the flicker data and a first brightness signal corresponding to brightness of the image signal.
Claims21
A projection device, comprising:
- an illumination module configured to provide an illumination beam;
- a light valve module disposed on a transmission path of the illumination beam to convert the illumination beam into an image beam;
- a projection lens disposed on a transmission path of the image beam to project the image beam out of the projection device;
- and
- an image processing module configured to receive an image signal, wherein the image signal comprises a plurality of sub-image signals, each of the plurality of sub-image signals corresponds to a plurality of pixels, the plurality of pixels form a pixel shifting unit, the image processing module generates flicker data based on contrast in the pixel shifting unit, and generates an output image signal based on the flicker data and a first brightness signal corresponding to brightness of the image signal, and the light valve module converts the illumination beam into the image beam according to the output image signal.
An image processing module configured to receive an image signal, comprising:
- a flicker detector generating flicker data based on contrast in a plurality of pixel shifting units, wherein the image signal comprises a plurality of sub-image signals, each of the plurality of sub-image signals corresponds to a plurality of pixels, and the plurality of pixels form the pixel shifting unit;
- an image blurring adjuster performing low-pass filtering on a first brightness signal to generate a first blurring signal, wherein the first brightness signal corresponds to brightness of the image signal;
- and
- a blending module coupled to the flicker detector and the image blurring adjuster, wherein the blending module determines a weight of the first blurring signal and a weight of the first brightness signal based on the flicker data,
- wherein the blending module generates a second blurring signal based on the first blurring signal and the weight of the first blurring signal, and generates a second brightness signal based on the first brightness signal and the weight of the first brightness signal,
- the blending module generates an output brightness signal based on the second blurring signal and the second brightness signal, and the output brightness signal is related to the output image signal.
Dependencies are inferred from the claim text.