# US 11,442,679 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,442,679 B2 - Document ID: US11442679B2 - Status: Granted - Kind: B2 - Application number: 16/796,027 - Filed: 2020-02-20 - Published: 2021-06-17 - Granted: 2022-09-13 - Earliest claimed: 2019-12-13 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Hyunseung Kim - Web page: https://patentgrep.com/patent/US11442679B2 ## CPC - G09G 3/035: {for flexible display surfaces} - B65H 75/4471: {Housing enclosing the reel} - B65H 75/4486: {Electric motors} - G05B 15/02: electric - G06F 3/14: Digital output to display device {; Cooperation and interconnection of the display device with other functional units} - G06F 3/167: {Audio in a user interface, e.g. using voice commands for navigating, audio feedback} - G10L 15/22: Procedures used during a speech recognition process, e.g. man-machine dialogue - H05K 5/0217: {Mechanical details of casings (covers, lids, hoods or members for covering apertures H05K5/03)} - G09G 2340/0407: Resolution change, inclusive of the use of different resolutions for different screen areas - G09G 2340/0442: Handling or displaying different aspect ratios, or changing the aspect ratio - G09G 2354/00: Aspects of interface with display user - G09G 2370/16: Use of wireless transmission of display information - G10L 2015/223: {Execution procedure of a spoken command} - 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) - B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES - G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G10L: SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A display device including a housing; a rotatable roller accommodated in the housing; a rollable display adjusted in a drawn-out length from the housing according to rotation of the roller; and a controller configured to receive an input of a voice command, and vary a method of outputting a result of the voice command according to the drawn-out length of the rollable display. ## Claims ### Claim 1 A display device comprising: a housing; a rotatable roller accommodated in the housing; a rollable display adjusted in a drawn-out length from the housing according to rotation of the roller; and a controller configured to: receive an input of a voice command, and vary a method of outputting a result of the voice command according to the drawn-out length of the rollable display, wherein the controller configured to output the result of the voice command differently according to the drawn-out length of the rollable display even for the same voice command. ### Claim 2 (depends on 1) The display device of claim 1, wherein the controller is configured to: output the result of the voice command as audio when the rollable display is not drawn out from the housing, and display the result of the voice command on the rollable display when at least a part of the rollable display is drawn out from the housing. ### Claim 3 (depends on 2) The display device of claim 2, wherein the controller is configured to differently adjust an amount of the result of the voice command output on the rollable display according to the drawn-out length of the rollable display when at least a part of the rollable display is drawn out from the housing. ### Claim 4 (depends on 3) The display device of claim 3, wherein the controller is configured to: display the result of the voice command on the rollable display when the drawn-out length is equal to or greater than a preset length, and display summary information of the result of the voice command on the rollable display when the drawn-out length is less than the preset length. ### Claim 5 (depends on 1) The display device of claim 1, wherein the controller is configured to receive a selection whether to display the result of the voice command to a screen on the rollable display after outputting the result of the voice command as audio, when the rollable display is not drawn out from the housing. ### Claim 6 (depends on 5) The display device of claim 5, wherein the controller is configured to control the roller such that the rollable display is drawn out from the housing, when a command for displaying the result of the voice command to the screen is received. ### Claim 7 (depends on 1) The display device of claim 1, wherein the controller is configured to control the roller such that the rollable display is drawn out from the housing, while outputting the result of the voice command as audio, when the rollable display is not drawn out from the housing. ### Claim 8 (depends on 1) The display device of claim 1, wherein the controller is configured to control the roller such that the rollable display is further drawn out from the housing, while displaying summary information of the result of the voice command on the rollable display, when the drawn-out length is less than a preset length. ### Claim 9 (depends on 8) The display device of claim 8, wherein the controller is further configured to display information other than the summary information on the rollable display, while the rollable display is being further drawn out. ### Claim 10 (depends on 1) The display device of claim 1, wherein the controller is configured to adjust the drawn-out length of the rollable display according to the result of the voice command. ### Claim 11 (depends on 10) The display device of claim 10, wherein the controller is configured to: control the roller such that the rollable display is at least partially drawn out from the housing when an image is included in the result of the voice command, and control the roller such that the rollable display is entirely drawn into the housing when an image is not included in the result of the voice command. ### Claim 12 (depends on 1) The display device of claim 1, wherein the controller is configured to adjust the drawn-out length of the rollable display according to a size of the voice command. ### Claim 13 (depends on 12) The display device of claim 12, wherein the controller is configured to: control the roller such that the rollable display is at least partially drawn out from the housing when the size of the voice command is equal to or greater than a preset size, and control the roller such that the rollable display is entirely drawn into the housing when the size of the voice command is less than the preset size. ### Claim 14 (depends on 1) The display device of claim 1, wherein the controller is configured to: detect an external device connected to the display device when the voice command is a search command for the external device, control the roller such that the rollable display is entirely drawn into the housing when the external device is not detected, and control the roller such that the rollable display is at least partially drawn out from the housing when the external device is detected. ### Claim 15 (depends on 1) The display device of claim 1, wherein the controller is configured to: connect to an external device when the voice command is a connection command for the external device, output information on the connection to the external device as audio when the rollable display is entirely drawn into the housing, and display information on the connection to the external device on the rollable display when at least a part of the rollable display is drawn out from the housing. ### Claim 16 (depends on 1) The display device of claim 1, wherein the controller is configured to: set one search domain for the voice command when at least a part of the rollable display is drawn out from the housing, and set two or more search domains for the voice command when the rollable display is entirely drawn out from the housing. ### Claim 17 (depends on 1) The display device of claim 1, wherein the controller is configured to differently control the drawn-out length of the rollable display for providing the result of the voice command according to a question format of the voice command. ### Claim 18 (depends on 1) The display device of claim 1, wherein the controller is configured to: differently control the result of the voice command according to a mode of the rollable display when the voice command is received, and wherein the mode of the rollable display comprises a zero view mode in which the rollable display operates in a state of being entirely drawn in the housing, a full view mode in which the rollable display operates in a state of being maximally drawn out from the housing, and a partial view mode in which the rollable display operates in a state of being drawn out from the housing to be shorter than in the full view mode. ### Claim 19 (depends on 18) The display device of claim 18, wherein the controller is configured to: output, as audio, a search result corresponding to the voice command when the rollable display is in the zero view mode, display the search result corresponding to the voice command on the rollable display when the rollable display is in the full view mode, and display summary information of the search result corresponding to the voice command on the rollable display when the rollable display is in the partial view mode. ### Claim 20 (depends on 1) The display device of claim 1, wherein the controller is configured to differently control the method of providing the result of the voice command according to the drawn-out length by outputting audio data or by displaying the result on the rollable display.