Methods and apparatus for improved dithering on a line multiplied display
AssigneeQUALCOMM MEMS Technologies, Inc.
InventorsManu Parmar, Jennifer Lee Gille, Alan Lewis
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Abstract
This disclosure provides systems, methods and apparatus including computer programs encoded on computer storage media for producing line multiplied images with better visual appearance. In one aspect, before lines of the image are multiplied, they are dithered with a noise signal that increases faster with higher frequency along the multiplied dimension of the image data than along the non multiplied dimension of the image. This results in a line multiplied image was improved image quality.
Claims27
A method of displaying an image on an electronic display, comprising:
- storing source image data in an electronic memory;
- dithering data derived from the source image data using a dither noise signal having a two dimensional frequency spectrum that is radially asymmetric around zero frequency;
- and
- displaying image data derived from the dithered image data on a display.
An apparatus, comprising:
- an electronic memory;
- an electronic processor, configured to read and write to the electronic memory;
- a host program configured to dither data using a dither noise signal having a two dimensional frequency spectrum that is radially asymmetric around zero frequency.
A display apparatus comprising a display displaying multiplied lines, wherein the multiplied lines are derived from image data dithered using a dither noise signal with a radially asymmetric frequency spectrum around zero frequency.
A display apparatus comprising:
- means for storing source image data in an electronic memory;
- means for dithering data derived from the source image data using a dither noise signal having a two dimensional frequency spectrum that is radially asymmetric around zero frequency;
- and
- means for displaying data derived from the dithered data on an electronic display.
A non-transitory, computer readable storage medium having instructions stored thereon that cause a processing circuit to perform a method comprising:
- storing source image data to an electronic memory;
- dithering data derived from the source image data with a dither noise signal having a two dimensional frequency spectrum that is radially asymmetric around zero frequency;
- and
- displaying data derived from the dithered data on a display.
Dependencies are inferred from the claim text.