# US 12,002,346 B2 · Display device including display and roller to wind or unwind display

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- Number: US 12,002,346 B2
- Document ID: US12002346B2
- Status: Granted
- Kind: B2
- Application number: 17/758,569
- Filed: 2020-01-09
- Published: 2023-02-02
- Granted: 2024-06-04
- Earliest claimed: 2020-01-09
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Jeonghwan Kwon; Donghee Han
- Web page: https://patentgrep.com/patent/US12002346B2

## CPC

- G08B 5/22: using electric transmission; using electromagnetic transmission
- H04N 21/43615: {Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals (home Audio Video Interoperability [HAVI] data switching networks H04L12/2805)}
- H04N 21/43637: {involving a wireless protocol, e.g. Bluetooth®, RF or wireless LAN [IEEE 802.11] (arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114)}
- H04N 21/44218: {Detecting physical presence or behaviour of the user, e.g. using sensors to detect if the user is leaving the room or changes his face expression during a TV programme (methods or arrangements for recognising human body or animal bodies or body parts G06V40/10; methods or arrangements for acquiring or recognising human faces, facial parts, facial sketches, facial expressions G06V40/16; methods or arrangements for recognising movements or behaviour G06V40/20; arrangements for identifying users in broadcast systems H04H60/45)}
- H04N 21/47214: {for content reservation or setting reminders; for requesting event notification, e.g. of sport results or stock market (stock exchange data over packet-switching network H04L12/1804; push services over packet-switching network H04L12/1859; notification of incoming messages in packet switching networks H04L51/224)}
- H04N 21/4854: {for modifying image parameters, e.g. image brightness, contrast}
- H04N 21/4858: {for modifying screen layout parameters, e.g. fonts, size of the windows}
- H04N 21/4882: {for displaying messages, e.g. warnings, reminders (arrangements for providing short real-time information to substation in data switching networks H04L12/1895)}
- G09F 9/301: {flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED}
- G09G 3/035: {for flexible display surfaces}
- G09G 2354/00: Aspects of interface with display user
- G09G 2380/02: Flexible displays
- G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- 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

Provided is a display device in which a display completes preparation for outputting an alarm before an alarm output time. The display device comprises a housing, a display, a roller accommodated in the housing to rotate to wind or unwind the display, and a controller configured to control the roller such that the display is drawn out of the housing before a predetermined time of a set alarm time and to output an alarm at the alarm time.

## Claims

### Claim 1

A display device comprising:
a housing;
a display;
a roller accommodated in the housing to rotate to wind or unwind the display; and
a controller configured to control the roller to start a drawing out of the display from the housing at a first time point and control the display to output an alarm at a second time point,
wherein the second time point is a time point set to output the alarm,
wherein the first time point precedes the second time point by a predetermined time period, and
wherein the predetermined time period is equal to a time period required to complete the drawing out of the display and facilitate outputting the alarm in full by the display.

### Claim 2 (depends on 1)

The display device of claim 1, wherein the controller is further configured to differently adjust a draw-out length of the display according to alarm setting information.

### Claim 3 (depends on 1)

The display device of claim 1, wherein the controller is further configured to control the roller such that the display is drawn out of the housing by a preset length.

### Claim 4 (depends on 3)

The display device of claim 3, wherein the preset length varies according to a type of an application which is set to be displayed at the display when the alarm is output.

### Claim 5 (depends on 1)

The display device of claim 1, wherein the controller is further configured to differently output the alarm according to a draw-out length of the display when the alarm is output.

### Claim 6 (depends on 1)

The display device of claim 1, wherein the controller is further configured to draw out the display by a maximum length based on a user being detected while the alarm is output.

### Claim 7 (depends on 1)

The display device of claim 1, wherein the controller is further configured to display, at the display, a mirroring screen of an external device interworking with the display device based on a user being detected while the alarm is output.

### Claim 8 (depends on 1)

The display device of claim 1, wherein the controller is further configured to output audio or an image received through an external device interworking with the display device when the alarm is output.

### Claim 9 (depends on 1)

The display device of claim 1, wherein the controller is further configured to control the display such that a preset image is displayed at the display while the display is drawn out.

### Claim 10 (depends on 9)

The display device of claim 9, wherein the preset image varies according to the second time point.

### Claim 11 (depends on 9)

The display device of claim 9, wherein the controller is further configured to perform control to gradually increase a brightness of the display while the display is drawn out.

### Claim 12 (depends on 9)

The display device of claim 9, wherein the controller is further configured to control the display such that a brightness of the display varies according to a current time.

### Claim 13 (depends on 1)

The display device of claim 1, wherein the controller is further configured to set the alarm to be output again after a reference time has passed, based on an input signal for temporarily stopping the alarm being received.

### Claim 14 (depends on 13)

The display device of claim 13, wherein the controller is further configured to turn off power of the display device when a number of times that the input signal for temporarily stopping the alarm is received exceeds a preset number.

### Claim 15 (depends on 1)

The display device of claim 1, wherein the controller is further configured to adjust a brightness of the display based on an input signal for temporarily stopping the alarm being received.

### Claim 16 (depends on 15)

The display device of claim 15, wherein the controller is further configured to, after the input signal for temporarily stopping the alarm is received, adjust the brightness of the display to be darker than before the input signal is received.

### Claim 17 (depends on 1)

The display device of claim 1, wherein the controller is further configured to transmit, to an external device, a signal for granting authority to remotely control the display device when the alarm is output at the second time point.

### Claim 18 (depends on 1)

The display device of claim 1, wherein the controller is further configured to end output of the alarm based on no input signal being received during a preset time after an output time of the alarm.

### Claim 19 (depends on 1)

The display device of claim 1, wherein the controller is further configured to control the roller to draw the display into the housing based on no input signal being received during a preset time after the second time point.

### Claim 20 (depends on 1)

The display device of claim 1, wherein the controller is further configured to set the alarm based on a signal received from an external device or user input that is received.