Data processing system

• US 9,541,627 B2
• Filed: 10/09/2013
• Issued: 01/10/2017
• Est. Priority Date: 10/12/2012
• Status: Active Grant

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Fukuda, Michitaka
• Primary Examiner(s): MAPA, MICHAEL Y
• Application Number:
  US14/049,315
• Publication Number:
  US 20140106777A1
• Time in Patent Office: 1,189 Days
• Field of Search: 455/414.2, 455/433, 455/440, 455/448, 455/450, 455/451, 455/452.1, 455/464, 4554561-457, 359/214.1
• US Class Current: 1/1
• CPC Class Codes: G01S 1/68 Marker, boundary, call-sign, or like beacons transmitting signals not carrying directional information
• CPC Class Codes: G01S 5/0027 of actual mobile position, i.e. position determined on mobile
• CPC Class Codes: G06Q 10/0875 Itemisation or classification of parts, supplies or services, e.g. bill of materials

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.

Claims

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.