An improved apparatus is provided to attain enhanced convenience in controlling display of an electrical program guide with a smaller number of manipulating keys. An EPN mode for displaying the electrical program guide includes a main mode to display program information in a main window, a command mode...http://www.google.com.hk/patents/US7624345?utm_source=gb-gplus-share專利 US7624345 - Apparatus and method for controlling display of electrical program guide
