Patent ID: 8487952

Claim:
A method for marking pixel data as being critical symbology pixel data for display by a pixel on a display device, the method comprising: determining by a computing device whether the pixel data is critical symbology pixel data; assigning an intensity threshold level to the pixel data, wherein assigning the intensity threshold level comprises assigning a first intensity threshold level to the critical symbology pixel data and a second intensity threshold level to non-critical symbology pixel data, the second intensity threshold level being greater than the first intensity threshold level; determining whether an intensity value of the pixel data is less than or equal to the assigned intensity threshold level; reducing the intensity value of the pixel data for critical symbology pixel data and for the non-critical symbology pixel data by a common compression factor when the intensity value of the pixel data is less than or equal to the respective assigned intensity threshold level, and maintaining the intensity value of the pixel data for critical symbology pixel data and for the non-critical symbology pixel data when the intensity value of the pixel data is greater than the respective assigned intensity threshold level.