A method of transferring the digital representation of a bit-mapped image which includes the steps of: (1) identifying predefined patterns in the bit-mapped image data, and (2) transmitting pattern codes corresponding to those patterns to a receiving device. The identification of the patterns involves...http://www.google.co.uk/patents/US5640607?utm_source=gb-gplus-sharePatent US5640607 - Method for sending bit mapped image by appending special code to text string and transmitting the text string separately from compressed residual image
