Abstract: Contamination level at positions on a display screen is determined based on contact information containing information about a contact action detected by a contact detection section, which is disposed on the display screen to detect the contact action, and information about the contact position on the display screen, and a characteristic portion of the image is extracted. A display mode for the characteristic portion as extracted is determined based on the contamination level as determined.

Abstract: A radio communication system includes a plurality of radio devices and a plurality of terminal devices. The plurality of radio devices forms a mesh-type radio network. A plurality of terminal devices belong to a radio device and another plurality of terminal devices belong to another radio device. The plurality of radio devices each have global terminal connection information representing the connection between the terminal devices and the radio devices in the entire radio communication system. A radio device and another radio device relay radio communication between a terminal device and another terminal device using the global terminal connection information. When any of its subordinate terminal devices changes, each of the plurality of radio devices floods only the change information in the radio communication system.

Abstract: In a telecommunications network in which a plurality of switching nodes are interconnected via links each composed of a plurality of trunks and are each connected to a network control center via a control signal link, the network control center determines for each switching node a predetermined number of alternate routes for each first route on the basis of traffic data in the telecommunications network and supplies them as a set of available alternate routes to the switching node. The switching node assigns one or more of the available alternate routes in advance. The switching node responds to a call-connection request to try to connect the call to the first route, and when having failed in the call connection, the switching node retries the call connection through one of the assigned routes.