A videophone takes a live picture of the user, sends the live picture during part of a call, generates a processed picture different from the live picture, and sends the processed picture during another part of the call. The processed picture may be prepared in advance, or may be generated by combining...http://www.google.com/patents/US20010033324?utm_source=gb-gplus-sharePatent US20010033324 - Videophone apparatus with privacy protection
