Information display system and information display method

• US 9,864,566 B2
• Filed: 07/31/2015
• Issued: 01/09/2018
• Est. Priority Date: 03/25/2014
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: Yamaguchi, Koichiro
• Primary Examiner(s): Leiby, Christopher E
• Application Number:
  US14/815,285
• Publication Number:
  US 20150339091A1
• Time in Patent Office: 893 Days
• CPC Class Codes: G01C 21/3661 Guidance output on an external device, e.g. car radio
• CPC Class Codes: G06F 3/147 using display panels
• CPC Class Codes: G09G 2370/02 Networking aspects
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04
• CPC Class Codes: H04M 1/72412 using two-way short-range wireless interfaces
• CPC Class Codes: H04W 4/023 using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds

Abstract

An information display system, which displays information suitable for each browser requiring information in a specific place, includes: a display device etc. which transmit signals via electromagnetic waves; and a portable terminal. The portable terminal includes: a reception measurement unit that receives the signals from the display device etc. and measures intensity of the signal; and a portable-device transmission unit that transmits predetermined data and intensity data indicating a measurement result. The display device includes: a display-device transmission unit that repeatedly transmits the signal via electromagnetic waves; and a display unit that changes a display state according to the data transmitted from the portable terminal. The display unit changes the display state to a first state where display information is displayed according to the predetermined data, when the intensity is greater than a first threshold, and changes a value of the first threshold after the change of the display state.

Claims

1. A non-transitory computer-readable recording medium for use in a computer, the recording medium having a control program recorded thereon for causing a portable terminal to perform control processing in an information display system that includes the portable terminal and a plurality of display devices, the portable terminal having a recording medium and a processor, and the plurality of display devices each repeatedly transmitting a signal including display-device identification data via electromagnetic waves and each performing displaying according to predetermined data transmitted from the portable terminal, the control program executing:

receiving the signal transmitted from a target display device among the plurality of display devices;

measuring an intensity of the signal;

storing a value of the display-device identification data onto the recording medium under a certain condition;

determining whether the value of the display-device identification data stored in said storing is the same as a value of display-device identification data previously stored onto the recording medium; and

(i) transmitting the predetermined data when it is determined in said determining that the value of the display-device identification data stored in said storing is not the same as the value of display-device identification data previously stored onto the recording medium only if the intensity measured in the measuring is greater than or equal to a predetermined intensity, and (ii) transmitting the predetermined data when it is determined in said determining that the value of the display-device identification data stored in said storing is the same as the value of display-device identification data previously stored onto the recording medium, regardless of the intensity measured in the measuring.