Patent ID: 8830221
Filing Date: 2014-09-09
Classification: G09G

Abstract:
1. An image privacy protecting method adapted for a display system, the image privacy protecting method comprising the steps of: determining a position of a privacy protecting region in the display system; determining a position of a normal display region in the display system; finding at least a first and a second couple of driving voltage values of a first pixel electrode area and a second pixel electrode area of sub-pixel in the privacy protecting region corresponding to a first image data to be displayed in the privacy protecting region in a narrow viewing mode from a first and a second lookup tables, wherein the first couple of driving voltage values have a different driving voltage ratio with respect to the second couple of driving voltage values; finding a third couple of driving voltage values of the first pixel electrode area and the second pixel electrode area of sub-pixel in the normal display region corresponding to a second image data to be displayed in the normal display region in a wide viewing mode from a third lookup table, wherein the contents of the first lookup table, the second lookup table and the third lookup table are not completely the same; using the first and second couple of driving voltage values as a narrow viewing driving data; and using the third couple of driving voltage values as a wide viewing driving data; and displaying the narrow viewing driving data in the privacy protecting region and displaying the wide viewing driving data in the normal display region.