INFORMATION DISPLAY SYSTEM AND INFORMATION DISPLAY METHOD

• US 20150339091A1
• Filed: 07/31/2015
• Published: 11/26/2015
• 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
• Granted Patent: US 9,864,566 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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. An information display system comprising:

one or more display devices each of which transmits a signal via electromagnetic waves; and

a portable terminal,

wherein the portable terminal includes;

a reception measurement unit configured to receive the signal transmitted from each of the one or more display devices, and measure an intensity of the signal; and

a portable-terminal transmission unit configured to transmit predetermined data and intensity data that indicates a result of the measurement of the reception measurement unit, each of the one or more display devices includes;

a display-device transmission unit configured to repeatedly transmit the signal via electromagnetic waves; and

a display unit configured to change a display state of the display device according to the predetermined data and the intensity data which are transmitted from the portable terminal, and

the display unit is configured to;

change the display state to a first state where display information is displayed according to the predetermined data, when the intensity indicated by the intensity data is greater than a first threshold; and

change a value of the first threshold after the change of the display state to the first state.

2. The information display system according to claim 1,

wherein the change of the first threshold is decreasing the value of the first threshold.

3. The information display system according to claim 1,

wherein the display unit is configured to change the display state to a second state different from the first state, when the intensity indicated by the intensity data is smaller than a second threshold that is smaller than or equal to the first threshold.

4. The information display system according to claim 3,

wherein the display unit is configured to keep the display state, when the intensity indicated by the intensity data is smaller than the first threshold and greater than the second threshold.

5. The information display system according to claim 1, further comprising

a server device including:

a server-device receiving unit configured to receive the predetermined data and the intensity data which are transmitted from the portable terminal;

a display information determination unit configured to determine the display information according to the predetermined data and the intensity data which are received by the server-device receiving unit; and

a server-device transmission unit configured to transmit, to a target one of the one or more display devices, display data indicating the display information determined by the display information determination unit,

wherein each of the one or more display devices further includes

a display-device receiving unit configured to receive the display data transmitted from the server device, and

the display unit is configured to display the display information indicated by the display data received by the display-device receiving unit.

6. The information display system according to claim 5,

wherein the display information determination unit is configured to (i) determine the display information according to the predetermined data when the intensity indicated by the intensity data is greater than the first threshold, and (ii) determine the display information regardless of the predetermined data when the intensity is smaller than a second threshold that is smaller than or equal to the first threshold, and

when the display information determination unit determines the display information according to the predetermined data and the server-device receiving unit newly receives the predetermined data and the intensity data by the server-device receiving unit after the determination, the server device decreases the value of the first threshold.

7. The information display system according to claim 5,

wherein the predetermined data includes one of portable-terminal identification data identifying the portable terminal and user identification data identifying a user of the portable terminal,

the server device further includes a storage unit configured to hold association data and displayable classification data, the association data associating data in the predetermined data with classification data that indicates one of a plurality of classifications, and the displayable classification data indicating at least one of the classifications of the display information regarding which each of the one or more display devices is capable of displaying, and

the display information determination unit is configured to, when the predetermined data is received from the portable terminal, specify the classification data associated with the data in the predetermined data with reference to the storage unit, compare the one of the classifications which is indicated by the classification data with the at least one of the classifications indicated by the displayable classification data, and determine the display information according to a result of the comparison.

8. The information display system according to claim 5,

wherein the one or more display devices comprise two or more display devices,

the signal transmitted by the display-device transmission unit in each of the two or more display devices includes display-device identification data identifying the display device,

the predetermined data includes the display-device identification data, and

the server-device transmission unit is configured to transmit the display information determined by the display information determination unit according to the predetermined data received by the server-device receiving unit, to the display device identified by the display-device identification data included in the predetermined data.

9. The information display system according to claim 8,

wherein the display information determination unit is configured to (i) determine the display information according to the predetermined data when the intensity indicated by the intensity data is greater than the first threshold, and (ii) determine the display information regardless of the predetermined data when the intensity is smaller than a second threshold that is smaller than or equal to the first threshold, and

when the display information determination unit determines the display information according to the predetermined data and the server-device receiving unit newly receives the predetermined data and the intensity data by the server-device receiving unit after the determination, if the display device identified by the display-device identification data included in the predetermined data newly received is in a specific area, the server device decreases the value of the first threshold.

10. The information display system according to claim 9,

wherein the server device further includes a storage unit configured to hold association data indicating association between the data in the predetermined data and classification data that indicates one of a plurality of classifications, and

the server device determines the specific area according to the one of the classifications which is indicated by the classification data associated with the predetermined data received by the server-device receiving unit.

11. The information display system according to claim 1,

wherein the transmission of the signal by the display-device transmission unit is performed by emitting radio waves, and

the measurement by the reception measurement unit is measurement of an electric field intensity.

12. An information display method used in an information display system including a portable terminal and one or more display devices each of which transmits a signal via electromagnetic waves, the information display method comprising:

repeatedly transmitting the signal from each of the one or more display devices via electromagnetic waves;

receiving by the portable terminal the signal transmitted from a target display device among the one or more display devices, and measuring by the portable terminal an intensity of the signal;

transmitting predetermined data and intensity data that indicates a result of the measuring; and

changing a display state of the target display device according to the predetermined data and the intensity data which are transmitted in the transmitting,

wherein the changing includes;

changing the display state to a first state where display information is displayed according to the predetermined data, when the intensity indicated by the intensity data is greater than a first threshold; and

changing a value of the first threshold after the changing of the display state to the first state.

13. 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 one or more display devices, the portable terminal having a recording medium and a processor, and the one or more 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 one or more display devices, measuring an intensity of the signal, and storing a value of the display-device identification data onto the recording medium under a certain condition; and

(i) transmitting the predetermined data when the intensity measured in the measuring is greater than or equal to a predetermined intensity if the recording medium does not hold a same value as a value of the display-device identification data received in the receiving, and (ii) transmitting the predetermined data when the recording medium holds the same value as the value of the display-device identification data received in the receiving.