# US 2017/0286783 A1 · Mobile terminal and control method therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0286783 A1 - Document ID: US20170286783A1 - Status: Published application - Kind: A1 - Application number: 15/508,073 - Filed: 2015-03-12 - Published: 2017-10-05 - Earliest claimed: 2014-09-01 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Soyeon YIM; Shinhui AHN; Youjin JEON; Soomin KIM - Web page: https://patentgrep.com/patent/US20170286783A1 ## CPC - G06F 3/147: using display panels - G01B 11/00: Measuring arrangements characterised by the use of optical techniques - G01B 11/026: {by measuring distance between sensor and object (G01B11/0608 takes precedence)} - G06F 1/1613: {for portable computers (cooling arrangements therefor G06F1/203; constructional details or arrangements for pocket calculators, electronic agendas or books G06F15/0216; constructional details of portable telephone sets: with several bodies H04M1/0202)} - G06F 1/1684: {Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675} - G06F 3/017: {Gesture based interaction, e.g. based on a set of recognized hand gestures (interaction based on gestures traced on a digitiser G06F3/04883)} - G06F 3/0481: based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance - G06F 3/14: Digital output to display device {; Cooperation and interconnection of the display device with other functional units} - G06T 7/74: {involving reference images or patches} - G06V 10/17: {using hand-held instruments} - G06V 20/10: Terrestrial scenes (scenes under surveillance with static cameras G06V20/52; scenes perceived from the exterior of a vehicle G06V20/56; scenes perceived from the interior of a vehicle G06V20/59) - G06V 20/20: in augmented reality scenes - G06V 20/58: Recognition of moving objects or obstacles, e.g. vehicles or pedestrians; Recognition of traffic objects, e.g. traffic signs, traffic lights or roads - G09G 5/14: Display of multiple viewports - H04M 1/72454: according to context-related or environment-related conditions - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - 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) - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) ## Abstract The present invention relates to a mobile terminal for detecting an obstacle in the front, comprising: a display unit; a laser sensor for detecting an obstacle located on a moving route by irradiating a laser beam; and a control unit for controlling so as to activate the laser sensor when a predetermined event is detected, measure the distance to an obstacle detected through the activated laser sensor, and display obstacle notification information on the display unit when the measured distance is within a threshold distance. ## Claims ### Claim 1 A mobile terminal comprising: a display unit; a laser sensor configured to emit laser beams to sense an obstacle located on a movement path; and a controller configured to activate the laser sensor upon detecting a predetermined event, to measure a distance from the obstacle sensed through the activated laser sensor and to control the display unit to display obstacle notification information when the measured distance is within a threshold distance. ### Claim 2 (depends on 1) The mobile terminal according to claim 1, wherein the laser sensor is a laser autofocus sensor. ### Claim 3 (depends on 1) The mobile terminal according to claim 1, wherein the laser sensor is provided at a rear surface of a body of the terminal. ### Claim 4 (depends on 1) The mobile terminal according to claim 1, wherein the predetermined event is an event in which movement of the terminal is sensed or an event in which a gaze of a user is detected by the display unit. ### Claim 5 (depends on 1) The mobile terminal according to claim 1, wherein, if predetermined gesture input is received, the controller performs control to make the obstacle notification information disappear from the display unit. ### Claim 6 (depends on 1) The mobile terminal according to claim 1, wherein, if the obstacle is no longer detected, the controller performs control to make the obstacle notification information disappear from the display unit. ### Claim 7 (depends on 1) The mobile terminal according to claim 1, wherein the controller provides a menu for setting an obstacle detection mode. ### Claim 8 (depends on 1) The mobile terminal according to claim 1, wherein, upon displaying the obstacle notification information, the controller controls a haptic module to output a vibration effect or controls an audio output module to output a warning sound. ### Claim 9 (depends on 1) The mobile terminal according to claim 1, wherein the controller provides different screen effects according to an approach speed, type or shape of the sensed obstacle. ### Claim 10 (depends on 1) The mobile terminal according to claim 1, wherein the controller displays distance information of the sensed obstacle in a region of the display unit. ### Claim 11 (depends on 1) The mobile terminal according to claim 1, wherein the controller semitransparently displays an object corresponding to the sensed obstacle on the display unit. ### Claim 12 (depends on 1) The mobile terminal according to claim 1, wherein the controller changes a detection period of the laser sensor according to a movement speed of the terminal. ### Claim 13 A method of controlling a mobile terminal, the method comprising: activating at least one laser sensor provided at a rear surface of a body of the terminal upon detecting a predetermined event; sensing an obstacle located on a movement path using the activated laser sensor; and measuring a distance from the sensed obstacle and displaying obstacle notification information on a display unit when the measured distance is within a threshold distance. ### Claim 14 (depends on 13) The method according to claim 13, wherein the predetermined event is an event in which movement of the terminal is sensed or an event in which a gaze of a user is detected by the display unit. ### Claim 15 (depends on 13) The method according to claim 13, further comprising removing the obstacle notification information displayed on the display unit if predetermined gesture input is received. ### Claim 16 (depends on 13) The method according to claim 13, further comprising removing the obstacle notification information displayed on the display unit if the obstacle is no longer detected. ### Claim 17 (depends on 13) The method according to claim 13, further comprising outputting a vibration effect or warning sound upon displaying the obstacle notification information. ### Claim 18 (depends on 13) The method according to claim 13, further comprising providing different screen effects according to an approach speed, type or shape of the sensed obstacle. ### Claim 19 (depends on 13) The method according to claim 13, further comprising displaying distance information of the sensed obstacle in a region of the display unit. ### Claim 20 (depends on 13) The method according to claim 13, further comprising changing a detection period of the laser sensor according to a movement speed of the terminal.