| US 7,612,656 B2 | ||
| Communication device and method for controlling the same | ||
| Yoshio Koie, Handa (Japan); Hiroshi Sakai, Okazaki (Japan); and Masaru Hotta, Anjo (Japan) | ||
| Assigned to DENSO Corporation, Kariya (Japan) | ||
| Filed on Jun. 20, 2006, as Appl. No. 11/471,314. | ||
| Claims priority of application No. 2005-186493 (JP), filed on Jun. 27, 2005. | ||
| Prior Publication US 2007/0063825 A1, Mar. 22, 2007 | ||
| Int. Cl. B60Q 1/00 (2006.01) | ||
| U.S. Cl. 340—425.5 [340/426.1; 340/426.18] | 10 Claims |
| 1. A communication device comprising:
a radio unit for communication with a service center, wherein the radio unit transmits an emergency signal to the service
center, receives an incoming call from the service center in response to the emergency signal and answers the incoming call;
a control unit for causing an emergency operation upon receiving an emergency trigger and for causing a reset operation which
restarts the communication device upon receiving an automatically generated reset signal in response to a power turn-on signal;
and
a signal detector for outputting the reset signal to the control unit upon detecting a cause of reset; wherein
the control unit outputs a continuous guard signal to the signal detector upon receiving the emergency trigger;
the signal detector is held in a controlled condition that prohibits output of the reset signal to the control unit as long
as the signal detector receives the guard signal from the control unit; and
the control unit discontinues output of the guard signal when the incoming call is received and answered; wherein
the power turn-on signal is provided by a navigation system.
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