| US 7,432,877 B2 | ||
| Communication terminal device | ||
| Yuichiro Sagawa, Saitama (Japan) | ||
| Assigned to NEC Corporation, (Japan) | ||
| Filed on Oct. 13, 2004, as Appl. No. 10/962,658. | ||
| Claims priority of application No. 2003-370646 (JP), filed on Oct. 30, 2003. | ||
| Prior Publication US 2005/0093828 A1, May 05, 2005 | ||
| Int. Cl. H04M 1/00 (2006.01) | ||
| U.S. Cl. 345—1.2 [345/1.1; 345/169; 345/204; 455/550; 455/556; 455/566; 455/575] | 7 Claims |
| 4. A communication terminal device comprising:
a key entry unit;
a plurality of displays;
a display switching controller for causing one or more contents that are to be displayed on a predetermined display, to be
displayed on another display;
a malfunction detection unit for detecting a malfunction in the predetermined display, and for informing the display switching
controller of it; and
a display operation controller for controlling an operation of the display,
wherein the display switching controller operates upon reception of the information, and
wherein the malfunction detection unit detects at least one of a current value and a voltage value in the display operation
controller, thereby judging a malfunction in the predetermined display.
|