Patent ID: 8611840

Claim:
A mobile communication terminal having a control function for selectively switching a plurality of radio communication systems or a plurality of frequency bands, the terminal comprising: a communication control means for selecting a radio communication system or frequency band from the plurality of radio communication systems or the plurality of frequency bands, controlling communication and managing a communication state based on the selected radio communication system or frequency band; a signal-strength information acquisition means for acquiring signal-strength information about a received signal; a communication-state acquisition means for acquiring the communication state from the communication control means; a switch-over determination means for determining whether the radio communication system or the frequency band selected by the communication control means is being switched-over based on the communication state acquired by the communication-state acquisition means; a calculation means for calculating signal-strength display information from the signal-strength information acquired by the signal-strength information acquisition means based on the determination of the switch-over determination means; a display means for displaying the signal-strength display information calculated by the calculation means; a display control means for performing display control by providing an indication according to the difference between being switched over and not being switched over that is determined by the switch-over determination means when the signal-strength display information is displayed on the display means, the signal-strength display information displayed on the display means being represented by a single indicator; a signal-strength information storage means for storing signal-strength information acquired by the signal-strength information acquisition means; and a signal-strength information comparison means for comparing previous signal-strength information stored in the signal-strength information storage means with the present signal-strength information acquired by the signal-strength information acquisition means, and calculating a difference between the previous and present signal-strength information; wherein the calculation means calculates signal-strength display information from the difference between the previous and present signal-strength information obtained by the signal-strength information comparison means; and the display control means performs display control by way of providing an indication according to the difference between the previous and present signal-strength information obtained by the signal-strength information comparison means.