Invention Grant
US07786857B2 Path tracking system, terminal device, fixed communication device, and path management device
有权
路径跟踪系统，终端设备，固定通信设备和路径管理设备
- Patent Title: Path tracking system, terminal device, fixed communication device, and path management device
- Patent Title (中): 路径跟踪系统，终端设备，固定通信设备和路径管理设备
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Application No.: US11882333Application Date: 2007-07-31
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Publication No.: US07786857B2Publication Date: 2010-08-31
- Inventor: Takashi Yuba , Shigemi Kurashima , Masahiro Yanagi , Takashi Arita
- Applicant: Takashi Yuba , Shigemi Kurashima , Masahiro Yanagi , Takashi Arita
- Applicant Address: JP Tokyo
- Assignee: Fujitsu Component Limited
- Current Assignee: Fujitsu Component Limited
- Current Assignee Address: JP Tokyo
- Agency: Staas & Halsey LLP
- Priority: JP2007-049505 20070228
- Main IPC: G08B1/08
- IPC: G08B1/08
Abstract:
A shopping path tracking system is disclosed that comprises a terminal device, a fixed communication device, and a path management device. The fixed communication device wirelessly communicates with the terminal device, calculates a response time of the terminal device, and reports the calculated response time to the path management device. The path management device detects a position of the terminal device based on the response time reported from the fixed communication device, stores the detected position, and detects a travel path of the terminal device by tracking the stored positions.
Public/Granted literature
- US20080204224A1 Path tracking system, terminal device, fixed communication device, and path management device Public/Granted day:2008-08-28
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