Data processing system

Patent metadata

Field	Value
Publication number	US-9541627-B2
Application number	US-201314049315-A
Country	US
Kind code	B2
Filing date	Oct 9, 2013
Priority date	Oct 12, 2012
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

A data processing system includes a distribution apparatus and a communication terminal. The distribution apparatus includes a distribution unit that distributes a wireless signal containing unique data unique to the distribution apparatus. The communication terminal receives the wireless signal distributed by the distribution apparatus. A position data indicating a position of the distribution apparatus and a predetermined threshold value pertaining to a signal strength of the wireless signal received by the communication terminal are identifiable based on the unique data. The communication terminal includes a determination unit that determines whether to indicate that a current position of the communication terminal is the position data by referring to the predetermined threshold value.

First claim

What is claimed is:

1. A data processing system comprising:
a communication terminal; and
at least one or more distribution apparatuses configured to distribute a wireless signal to the communication terminal;
wherein each of the at least one or more distribution apparatuses distributes a wireless signal that contains position data that indicates a position of the distribution apparatus;
wherein the communication terminal stores beforehand in the communication terminal a predetermined threshold value with respect to a signal strength of a wireless signal distributed by a distribution apparatus, compares the predetermined threshold value and a signal strength of one wireless signal that is distributed from a first distribution apparatus among the at least one or more distribution apparatuses, and has a determination unit that determines that position data obtained from a relative position measuring method is indicative of a current position of the communication terminal when the strength of the one wireless signal is below the predetermined threshold value; and determines that position data received from the first distribution apparatus is indicative of the current position of the communication terminal when (i) 2 or more wireless signals containing position data are consecutively received from the first distribution apparatus, and (ii) when the signal strengths of the 2 or more wireless signals are above the predetermined threshold value.

Assignees

• Fukuda Michitaka
• Ricoh Co Ltd

Inventors

• Fukuda Michitaka

Classifications

• G01S5/0027 Primary

  of actual mobile position, i.e. position determined on mobile · CPC title

• G01S1/68

  Marker, boundary, call-sign, or like beacons transmitting signals not carrying directional information · CPC title

• G06Q10/0875

  Itemisation or classification of parts, supplies or services, e.g. bill of materials · CPC title

• G01S5/0252

  Radio frequency fingerprinting · CPC title

• G01S5/0263

  by combining or switching between positions derived from two or more separate positioning systems · CPC title