Title:
【発明の名称】移動通信端末
Document Type and Number:
Japanese Patent JP2865086
Kind Code:
B2
Abstract:
In a mobile communication terminal, a switch 10 is initially set to an initial setting mode at time of turning on a power supply. A reference oscillator control circuit is initialized, and in this state, the output frequency of a reference oscillator is usually greatly shifted. The base station search is first conducted, and as a result, if the base station cannot be grasped, an offset signal is generated by a frequency offset generating circuit 12, to shift the output frequency of a reference oscillator 6 through a reference oscillator control circuit 5. This operation is repeated until the base station is grasped so that the base station search is continued while the output frequency of the reference oscillator 6 is being shifted. When a grasp of the base station succeeds, the switch 10 is switched to an AFC side to conduct automatic frequency adjustment.
Inventors:
ICHIHARA MASAKI
Application Number:
JP31754396A
Publication Date:
March 08, 1999
Filing Date:
November 28, 1996
Export Citation:
Assignee:
NIPPON DENKI KK
International Classes:
H03J7/02; H03J1/00; H03J7/22; H04B1/26; H04L29/00; H04W48/16; H04W84/10; H04W88/02; (IPC1-7): H04Q7/38
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)