# US 2019/0171402 A1 · Electronic shelf label system and display device

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- Number: US 2019/0171402 A1
- Document ID: US20190171402A1
- Status: Published application
- Kind: A1
- Application number: 16/209,334
- Filed: 2018-12-04
- Published: 2019-06-06
- Earliest claimed: 2017-12-04
- Assignees: Japan Display Inc.
- Applicants: Japan Display Inc.
- Inventors: Koji ISHIZAKI; Taro ICHIMURA; Takao AMBAI
- Web page: https://patentgrep.com/patent/US20190171402A1

## CPC

- G06F 3/147: using display panels
- G06K 17/00: Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06Q 10/087: Inventory or stock management, e.g. order filling, procurement or balancing against orders
- G06Q 20/201: {Price look-up processing, e.g. updating}
- G09F 3/208: {Electronic labels, Labels integrating electronic displays}
- G09G 2330/021: Power management, e.g. power saving
- G09G 2380/04: Electronic labels
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)

## Abstract

According to one embodiment, a display device being enable communication with an external device is provided. The display device includes a display panel, a controller, a battery, and a power supply circuit. The controller is configured to control the display panel so as to display product data related to a product. The battery is configured to store electric power operating the display device. The power supply circuit is configured to supply electric power to the battery. The electric power is obtained by the communication with the external device.

## Claims

### Claim 1

A display device being enable communication with an external device, comprising:
a display panel;
a controller configured to control the display panel so as to display product data related to a product;
a battery configured to store electric power operating the display device; and
a power supply circuit configured to supply electric power to the battery, the electric power being obtained by the communication with the external device.

### Claim 2 (depends on 1)

The display device of claim 1, further comprising an antenna configured to receive the electric power transmitted from the external device,
wherein
the power supply circuit is configured to convert the radio waves received by the antenna into the electric power and to supply the electric power to the battery.

### Claim 3 (depends on 2)

The display device of claim 2, wherein
the antenna is configured to receive first radio waves transmitted from a server device in the external device in order to display a product data managed in the server device on the display panel and to receive second radio waves transmitted from the server device in order to supply the electric power to the battery,
the controller is configured to display the product data acquired from the first radio waves on the display panel when the first radio waves are received by the antenna, and
the power supply circuit is configured to convert the second radio waves into the electric power and to supply the electric power to the battery when the second radio waves are received by the antenna.

### Claim 4 (depends on 2)

The display device of claim 2, wherein
the antenna is configured to receive first radio waves transmitted from a server device in the external device in order to display a product data managed in the server device on the display panel and to receive second radio waves transmitted from the terminal in order to supply the electric power to the battery,
the controller is configured to display the product data acquired from the first radio waves on the display panel when the first radio waves are received by the antenna, and
the power supply circuit is configured to convert the second radio waves into the electric power and to supply the electric power to the battery when the second radio waves are received by the antenna.

### Claim 5 (depends on 2)

The display device of claim 2, wherein
the antenna comprises a first antenna configured to receive first radio waves transmitted from a server device in the external device in order to display a product data managed in the server device on the display panel and a second antenna configured to receive second radio waves transmitted from the server device in order to supply the electric power to the battery,
the controller is configured to display the product data acquired from the first radio waves on the display panel when the first radio waves are received by the first antenna, and
the power supply circuit is configured to convert the second radio waves into the electric power and to supply the electric power to the battery when the second radio waves are received by the second antenna.

### Claim 6 (depends on 1)

The display device of claim 1, wherein the controller and the power supply circuit are integrated as one body.

### Claim 7 (depends on 1)

The display device of claim 1, wherein the display panel includes an electrophoretic display panel.

### Claim 8

An electronic shelf label system comprising a display device, and a server device being enable communication with the display device, wherein
the server device comprises a storage configured to store product data on a product, and
the display device comprises:
a display panel;
a first controller configured to control the display panel so as to display the product data on the display panel;
a battery configured to store electric power operating the display device; and
a power supply circuit configured to supply electric power to the battery, the electric power being obtained by communication with the server device.

### Claim 9 (depends on 8)

The electronic shelf label system of claim 8, wherein
the server device comprises a second controller configured to acquire an amount of electric power stored in the battery from the display device and to determines whether the electric power needs to be supplied to the battery or not, based on the acquired amount of electric power,
the display device comprises an antenna configured to receive the radio waves transmitted from the server device when it is determined that the electric power needs to be supplied to the battery, and
the power supply circuit is configured to convert the radio waves received by the antenna into the electric power and to supply the electric power to the battery.

### Claim 10 (depends on 9)

The electronic shelf label system of claim 9, wherein
the second controller is configured to acquire again from the display device the amount of electric power stored in the battery after supplying the electric power to the battery by the power supply circuit, and to further determine whether abnormality occurs in power supply to the battery or not, based on the amount of electric power acquired again, and
the server device is configured to output alert when it is determined that the abnormality occurs in the power supply to the battery.

### Claim 11 (depends on 8)

The electronic shelf label system of claim 8, wherein
the server device is configured to transmit first radio waves in order to display the product data on the display panel and to transmit second radio waves to supply the electric power to the battery, via different antennas,
the display device comprises a first antenna configured to receive the first radio waves and a second antenna configured to receive the second radio waves,
the first controller is configured to display the product data acquired from the first radio waves by the first antenna, on the display panel, and
the power supply circuit is configured to convert the second radio waves received by the second antenna into the electric power and to supply the electric power to the battery.

### Claim 12

An electronic shelf label system comprising a display device, a server device being enable communication with the display device, and a terminal, wherein
the server device comprises a storage configured to store product data on a product, and
the display device comprises:
a display panel;
a first controller configured to control the display panel so as to display the product data on the display panel;
a battery configured to store electric power operating the display device; and
a power supply circuit configured to supply electric power to the battery, the electric power being obtained by communication with the terminal.

### Claim 13 (depends on 12)

The electronic shelf label system of claim 12, wherein
the server device acquires an amount of electric power stored in the battery from the display device and to determines whether the electric power needs to be supplied to the battery or not, based on the acquired amount of electric power,
the server device comprises a controller configured to activate the terminal when it is determined that the electric power needs to be supplied to the battery,
the display device comprises an antenna configured to receive the radio waves transmitted from the terminal activated in order to supply the electric power to the battery, and
the power supply circuit is configured to convert the radio waves received by the antenna into the electric power and to supply the electric power to the battery.

### Claim 14 (depends on 12)

The electronic shelf label system of claim 12, wherein the terminal is configured to have directivity of emitting radio waves in a direction of the display device.