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Portable telephone, positioning selection method and program

A technology of a portable phone and a positioning method, applied in the field of portable phones, can solve the problem that the portable phone cannot be determined in detail, and achieve the effect of reducing user operations

Inactive Publication Date: 2004-05-26
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with this method, it is not possible to determine in detail the position of the portable phone located in an area closer to the target point

Method used

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  • Portable telephone, positioning selection method and program
  • Portable telephone, positioning selection method and program
  • Portable telephone, positioning selection method and program

Examples

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Effect test

no. 1 example

[0029] According to the first embodiment of the present invention, in the case of performing the operation of determining the position of the portable telephone 1, the control section 17 initializes the value of the flag as an initialization process at the beginning, and sets "00" as the initial value as the flag value (in figure 2 Step S1) in. Tag values ​​will be described later.

[0030] Then, in order to register the target point, the control section 17 has latitude and longitude information of the target point input by the input section 16, and stores the information in the storage section 18 ( figure 2 in step S2).

[0031] Subsequently, the control section 17 starts positioning (determining the position of the portable phone 1). The method for obtaining (determining) the latitude and longitude information of the portable telephone 1 depends on the flag value. At the first positioning after setting the target point, the flag value is the initialized flag value (fla...

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PUM

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Abstract

To provide a portable telephone capable of reducing power consumption and shortening positioning time. <??>A control portion stores latitude and longitude information inputted from an input portion in a storage portion, and starts positioning of a location of a portable telephone. On first positioning, the control portion performs GPS positioning, receives GPS data from a GPS antenna, and has the latitude and longitude information of the portable telephone calculated by a GPS portion so as to store it in the storage portion. A distance calculation portion calculates a distance between the location of the telephone and an objective point based on the latitude and longitude information of the objective point registered at the start and the latitude and longitude information of the telephone, and stores it in the storage portion. A positioning method determination portion selects a positioning method to be implemented on a next positioning based on the calculated distance.

Description

technical field [0001] The present invention relates to a portable phone, a location selection method for the same and a program thereof, and more particularly, to a portable phone with a GPS (Global Positioning System) receiver. Background technique [0002] In the past, a hand-held terminal device such as a cellular phone or a PAD (Personal Digital Assistant) has a GPS receiver in order to detect the situation of the position of a user holding the terminal device. A technology of a handheld terminal device with a GPS receiver is disclosed in Japanese Patent Laid-Open Publication No. 2000-241526. In Japanese Patent Laid-Open Publication No. 2000-241526, a GPS positioning device determines the position of a wireless base station based on ID information on a wireless base station obtained from a GPS receiving terminal having a GPS receiver, and the GPS receiving terminal determines the position of the wireless base station based on the ID information of the wireless base stat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/14H04W64/00
CPCG01S19/48H04W64/00Y02B60/50Y02D30/70
Inventor 坂野聪
Owner NEC CORP
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