A channel map is created and/or edited with the aid of a PIP window in which a real time television program is displayed. The PIP window is displayed on a monitor screen at the same time as a channel map of pairs of network names and local channel numbers. The local channel numbers can be individually...http://www.google.com.hk/patents/US6122011?utm_source=gb-gplus-share專利 US6122011 - Apparatus and method for creating or editing a channel map
