# US 2019/0378446 A1 · Health monitoring device and large area display including the same

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- Number: US 2019/0378446 A1
- Document ID: US20190378446A1
- Status: Published application
- Kind: A1
- Application number: 16/047,010
- Filed: 2018-07-27
- Published: 2019-12-12
- Earliest claimed: 2018-06-07
- Assignees: COTS Technology Co., Ltd.
- Applicants: COTS Technology Co., Ltd.
- Inventors: Byeung Chang HWANG
- Web page: https://patentgrep.com/patent/US20190378446A1

## CPC

- G09G 3/006: {Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays (testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309)}
- G06F 3/1446: {display composed of modules, e.g. video walls}
- G09G 3/2096: {Details of the interface to the display terminal specific for a flat panel (suitable for both CRT and flat panel G09G5/006; specific for a CRT G09G1/167)}
- G09G 2300/026: Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
- G09G 2320/041: Temperature compensation
- G09G 2330/02: Details of power systems and of start or stop of display operation
- G09G 2354/00: Aspects of interface with display user
- 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)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A health monitoring device included in a large area display (LAD) with at least one display computers comprises a universal asynchronous receiver-transmitter (UART) configured to produce a test path by communicating with a processor of the display computer, a field programmable gate array (FPGA) configured to transmit a test signal to a terminal of the display computer and receive a test result, an ethernet unit configured to communicate with a test terminal connected with the LAD to transmit a monitoring signal to the test terminal, and a micro-controller configured to gather an operation state of the display computer and produce a measurement signal according to the test result.

## Claims

### Claim 1

A health monitoring device included in a large area display (LAD) with at least one display computers, the health monitoring device comprising:
a universal asynchronous receiver-transmitter (UART) configured to produce a test path by communicating with a processor of the display computer;
a field programmable gate array (FPGA) configured to transmit a test signal to a terminal of the display computer and receive a test result;
an ethernet unit configured to communicate with a test terminal connected with the LAD to transmit a monitoring signal to the test terminal; and
a micro-controller configured to gather an operation state of the display computer and produce a measurement signal according to the test result.

### Claim 2 (depends on 1)

The health monitoring device of claim 1, further comprising:
a first analog-to-digital converter (ADC) configured to convert an input voltage and current applied to the processor into a first digital signal; and
a second ADC configured to convert the test signal applied through the terminal to the processor into a second digital signal, wherein the micro-controller is configured to receive the first digital signal and the second digital signal and reflect the first digital signal and the second digital signal to the measurement signal.

### Claim 3 (depends on 2)

The health monitoring device of claim 2, wherein the second ADC is configured to convert a temperature signal applied from a temperature sensor included in the display computer into a third digital signal, and wherein the micro-controller is configured to receive the third digital signal and reflect the third digital signal to the measurement signal.

### Claim 4

An LAD, comprising:
a display head assembly including a plurality of display modules;
a housing assembly including a plurality of display computers, each of the display computers connected with a respective one of the plurality of display modules and configured to provide an image signal; and
a rear interface assembly including a switch module having a plurality of ports, the switch module connected with an external system and configured to provide power and operation data to the plurality of display computers, wherein each of the plurality of display computers includes a health monitoring device configured to gather an operation state of the display computer and provide a measurement signal.

### Claim 5 (depends on 4)

The LAD of claim 4, wherein each of the plurality of display computers includes a video processing module configured to decode video data received from an outside to produce the image signal, a graphic processing module configured to add a graphical effect to the image signal, a core processing module configured to control the video processing module and the graphic processing module, and a power supply module configured to supply the power.

### Claim 6 (depends on 5)

The LAD of claim 5, wherein the health monitoring device includes a UART configured to produce a test path by communicating with a processor equipped in the video processing module, the graphic processing module, or the core processing module, an FPGA configured to transmit a test signal to a terminal of the display computer and receive a test result, an ethernet unit configured to communicate with a test terminal connected with the LAD to transmit a monitoring signal to the test terminal, a first ADC configured to convert an input voltage and current applied to the processor into a first digital signal, a second ADC configured to convert the test signal applied through the terminal to the processor into a second digital signal, and a micro-controller configured to gather the test result, the first digital signal, and the second digital signal and produce the measurement signal.

### Claim 7 (depends on 5)

The LAD of claim 5, wherein the plurality of ports of the switch module include three high-speed ports configured to communicate with the plurality of display computer in an ethernet scheme and a plurality of low-speed ports, and wherein one of the three high-speed ports is connected to a connector connected to the external system, and two of the three high-speed ports are connected with the core processing module.

### Claim 8 (depends on 5)

The LAD of claim 5, wherein the plurality of display computers include a first display computer and a second display computer, and wherein respective processors of the first display computer and the second display computer are synced with each other via a fast ethernet connection.

### Claim 9 (depends on 8)

The LAD of claim 8, wherein the plurality of display modules include a first display module and a second display module, and wherein the first display computer and the second display computer are connected with the first display module and the second display module, respectively, via serial connections.