Method and apparatus for sending, receiving, and displaying textual and/or graphic data via an alphanumeric paging system wherein source data in binary form is converted to an alphanumeric code for transmission via the paging system; a paging receiver with storage capability used in combination with...http://www.google.com.au/patents/US5481255?utm_source=gb-gplus-sharePatent US5481255 - Paging transmission system