Illumination field blending for use in subtitle projection systems
OwnerBrian D. Wichner, Mark Petersoninventors
Life of this patent
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Abstract
A projection system that projects a text or subtitle box onto an image minimizes the contrast between the text box and the image. A transition region surrounding the text box minimizes visual disruption to the image onto which the text box is projected. The positions of optical elements of a text projector enable the text box to gradually fade out. The text projector has a lamp that defines an object plane and a light path modifier. The light path modifier is offset from the object plane, toward the lamp to blend the borders of the text box into the image projected by an image projector.
Claims20
A method for displaying an image, the method comprising:
- displaying an image on a display device;
- superimposing a text box over a portion of the image, wherein the text box is configured to contain a plurality of text characters, and wherein the text box has diffused borders;
- and
- displaying at least one of the plurality of text characters in the text box while displaying the image.
A method for displaying an image, the method comprising:
- displaying an image on a display device;
- superimposing a text box over a portion of the image, wherein the text box has a first concentration of light at a center portion of the text box and a second concentration of light at a border of the text box, and wherein the second concentration of light is less than the first concentration of light;
- and
- displaying text in the text box while displaying the image.
A display device, comprising:
- a screen having an image displayed thereon;
- and
- a text box superimposed over at portion of the image on the screen, wherein the text box is configured to contain a plurality of text characters and the text box has a border blended with at least a portion of the image displayed on the screen.
A method, comprising:
- displaying an image on a display apparatus;
- displaying a text box on the display apparatus over at least a portion of the image, wherein the text box is configured to contain a text string, and the text box comprises an opaque region surrounding the text string and a transparent region between the opaque region and a border of the text box.
Dependencies are inferred from the claim text.