A portable phone includes a handset and a data projection system configured to form a visual image of data, such as caller waiting ID data, on a viewing surface viewable by a user during a two way conversation. The handset also includes a speaker, a microphone, conventional phone circuitry and a keyboard....http://www.google.com.au/patents/US7539513?utm_source=gb-gplus-sharePatent US7539513 - Portable phone with ergonomic image projection system
