Real time data conversion for a digital display
View Patent ↗A system and method for extracting and manipulating image data is provided. A pixel panel is rotated so as to increase a resolution of a projected image. The rotation may be calculated so as to achieve a desired resolution. A portion of the image is retrieved from a memory and an address is calculated for either the portion or discrete bits in order to determine where the bits should appear on the pixel panel. The manipulated bits are transferred to a buffer, which may be a line or frame buffer, and from the buffer to the pixel panel. One or more shift registers may be used to shift the bits into the buffer.
1. A method for transferring image data in real time for projection by a pixel panel, the method comprising:
extracting a predefined amount of image data from a memory using a digital signal processor;
calculating an angle of rotation between the pixel panel and a subject based on a value K, wherein the value K defines a number of points of the pixel panel that fall onto a single scan line;
calculating a location for each of a plurality of image portions of the extracted image data on the pixel panel, wherein each location accounts for the angle of rotation;
loading each bit from each of the image portions into a corresponding one of a plurality of registers of a shift register, wherein the loading orders the bits based on the location calculated for each image portion;
transferring each of the image portions into a frame buffer; and
transferring each frame to the pixel panel, wherein the extracting, calculating, loading, and transferring occurs in real time in response to a demand for image data for the pixel panel.
2. The method of claim 1 wherein loading each bit includes placing each bit from a single image portion into a separate register in a position corresponding to a position of each of the other bits from the single image portion in other registers.
3. The method of claim 2 wherein transferring each of the image portions into a frame buffer includes shifting a corresponding bit of each register into a single frame.
4. The method of claim 1 wherein loading each bit includes sequentially placing all bits from a single image portion into a single register.
5. The method of claim 1 wherein K is greater than 1.