# US 2019/0320133 A1 · Display device viewing angle compensation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0320133 A1 - Document ID: US20190320133A1 - Status: Published application - Kind: A1 - Application number: 16/452,104 - Filed: 2019-06-25 - Published: 2019-10-17 - Earliest claimed: 2017-05-03 - Assignees: DISH Ukraine L.L.C. - Applicants: DISH Ukraine L.L.C. - Inventors: Andrey Kuplevakhsky - Web page: https://patentgrep.com/patent/US20190320133A1 ## CPC - H04N 5/58: in dependence upon ambient light - G06F 3/013: {Eye tracking input arrangements (G06F3/015 takes precedence)} - G09G 3/20: for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} - G09G 5/00: Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators (image data processing or generation, in general G06T) - H04N 9/643: {Hue control means, e.g. flesh tone control} - H04N 21/42202: {environmental sensors, e.g. for detecting temperature, luminosity, pressure, earthquakes} - H04N 21/4318: {by altering the content in the rendering process, e.g. blanking, blurring or masking an image region (image enhancement or restoration in general G06T5/00)} - 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 21/4755: {for defining user preferences, e.g. favourite actors or genre (retrieval personalisation and generation of user profiles for the retrieval of video data G06F16/739; user profiles in network data switching protocols H04L67/306)} - H04N 21/4854: {for modifying image parameters, e.g. image brightness, contrast} - G09G 2320/0261: in the context of movement of objects on the screen or movement of the observer relative to the screen - G09G 2320/028: by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction - G09G 2320/06: Adjustment of display parameters - G09G 2320/066: for control of contrast - G09G 2320/0666: for control of colour parameters, e.g. colour temperature - G09G 2320/068: for control of viewing angle adjustment - G09G 2320/0686: with two or more screen areas displaying information with different brightness or colours - G09G 2320/08: Arrangements within a display terminal for setting, manually or automatically, display parameters of the display terminal - G09G 2354/00: Aspects of interface with display user - G09G 2360/144: the light being ambient light - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - 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 Various embodiments for compensating for user view angle of a display device are presented. The viewing angle of a user may be determined using sensors. Based on the viewing angle, the attenuation of the output of the display device may be determined. Compensation mode for the display output may be determined. The compensation mode may adjust the output of the display to compensate for the display attenuation allowing an improved image quality at large viewing angles. ## Claims ### Claim 1 (canceled) ### Claim 2 A method for correction of images displayed by a display device, the method comprising: detecting, using a signal from one or more sensors for observing an environment proximate to the display device, a set of users in a set of positions relative to the display device; computing an effective viewing angle between the display device and the set of users in accordance with the set of positions relative to the display device; detecting, according to the one or more sensors, an ambient condition of the environment proximate to the display device; and adjusting image display settings, responsive to detecting the set of users and responsive to detecting the ambient condition, to modify an output image displayed by the display device to compensate for attenuation of output of the display device when viewed in the ambient condition of the environment proximate to the display device from the effective viewing angle, wherein the adjusting is in accordance with expected attenuation data for the display device determined using a data file associated with the display device. ### Claim 3 (depends on 2) The method of claim 2, wherein adjusting the image display settings further to modify the output image displayed by the display device to compensate for distortions of the output of the display device when viewed in the ambient condition of the environment proximate to the display device from the effective viewing angle. ### Claim 4 (depends on 2) The method of claim 2, further comprising: determining whether the effective viewing angle is outside a preferred viewing cone of the display, wherein the adjusting is performed only when the effective viewing angle is outside the preferred viewing cone of the display. ### Claim 5 (depends on 2) The method of claim 2, further comprising: determining into which zone of a plurality of zones the effective viewing angle falls, wherein a first zone is associated with viewing angles within a preferred viewing cone of the display defined by a first angle, a second zone is associated with viewing angles greater than the first angle and less than a second angle, and a third zone is associated with viewing angles greater than the second angle and less than a third angle, and wherein the adjusting is performed according to one of a plurality of compensation modes, such that the adjusting is not performed when the effective viewing angle is in the first zone, the adjusting is performed according to a first of the plurality of compensation modes when the effective viewing angle is in the second zone, and the adjusting is performed according to a second of the plurality of compensation modes when the effective viewing angle is in the third zone. ### Claim 6 (depends on 2) The method of claim 2, wherein detecting the set of users comprises detecting a single user, such that the set of positions comprises a single position. ### Claim 7 (depends on 2) The method of claim 2, wherein: detecting the set of users in a set of positions relative to the display device comprises detecting a plurality of users, each user in an associated position of a plurality of positions relative to the display device; and computing the effective viewing angle comprises: computing a first viewing angle between a first of the plurality of users and the display device in accordance with a first associated position of the plurality of positions; computing a second viewing angle between a second of the plurality of users and the display device in accordance with a second associated position of the plurality of positions; determining that a difference between the first viewing angle and the second viewing angle is less than a threshold angle; and determining the effective viewing angle as a third viewing angle between the first viewing angle and the second viewing angle. ### Claim 8 (depends on 7) The method of claim 7, wherein: the first viewing angle is associated with a first compensation mode of a plurality of compensation modes; the second viewing angle is associated with a second compensation mode of the plurality of compensation modes; and determining the effective viewing angle as the third viewing angle between the first viewing angle and the second viewing angle comprises determining the third viewing angle as associated with an average of the first compensation mode and the second compensation mode. ### Claim 9 (depends on 2) The method of claim 2, wherein the one or more sensors comprises an acoustic camera or 3D imager to determine locations and/or motions of the set of users relative to the display device. ### Claim 10 (depends on 2) The method of claim 2, wherein adjusting the image display settings comprises adjusting one or more of a brightness setting, a color setting, or a contrast setting. ### Claim 11 (depends on 2) The method of claim 2, wherein adjusting image display settings comprises transforming input images provided to the display device by applying one or more of a brightness transformation, a color transformation, or a contrast transformation. ### Claim 12 A television receiver for correction of images displayed by a display device, the television receiver comprising: one or more processors; one or more sensors for observing an environment proximate to the display device, wherein the one or more sensors are communicatively coupled with the one or more processors; and a non-transitory memory communicatively coupled with and readable by the one or more processors and having stored therein processor-readable instructions that, when executed by the one or more processors, cause the one or more processors to perform operations including: detecting, using a signal from the one or more sensors, a set of users in a set of positions relative to the display device; computing an effective viewing angle between the display device and the set of users in accordance with the set of positions relative to the display device; detecting, according to the one or more sensors, an ambient condition of the environment proximate to the display device; and adjusting image display settings, responsive to detecting the set of users and responsive to detecting the ambient condition, to modify an output image displayed by the display device to compensate for attenuation of output of the display device when viewed in the ambient condition of the environment proximate to the display device from the effective viewing angle, wherein the adjusting is in accordance with expected attenuation data for the display device determined using a data file associated with the display device. ### Claim 13 (depends on 12) The television receiver of claim 12, wherein adjusting the image display settings further to modify the output image displayed by the display device to compensate for distortions of the output of the display device when viewed in the ambient condition of the environment proximate to the display device from the effective viewing angle. ### Claim 14 (depends on 12) The television receiver of claim 12, the operations further comprise: determining whether the effective viewing angle is outside a preferred viewing cone of the display, wherein the adjusting is performed only when the effective viewing angle is outside the preferred viewing cone of the display. ### Claim 15 (depends on 12) The television receiver of claim 12, the operations further comprise: determining into which zone of a plurality of zones the effective viewing angle falls, wherein a first zone is associated with viewing angles within a preferred viewing cone of the display defined by a first angle, a second zone is associated with viewing angles greater than the first angle and less than a second angle, and a third zone is associated with viewing angles greater than the second angle and less than a third angle, and wherein the adjusting is performed according to one of a plurality of compensation modes, such that the adjusting is not performed when the effective viewing angle is in the first zone, the adjusting is performed according to a first of the plurality of compensation modes when the effective viewing angle is in the second zone, and the adjusting is performed according to a second of the plurality of compensation modes when the effective viewing angle is in the third zone. ### Claim 16 (depends on 12) The television receiver of claim 12, wherein detecting the set of users comprises detecting a single user, such that the set of positions comprises a single position. ### Claim 17 (depends on 12) The television receiver of claim 12, wherein: detecting the set of users in a set of positions relative to the display device comprises detecting a plurality of users, each user in an associated position of a plurality of positions relative to the display device; and computing the effective viewing angle comprises: computing a first viewing angle between a first of the plurality of users and the display device in accordance with a first associated position of the plurality of positions; computing a second viewing angle between a second of the plurality of users and the display device in accordance with a second associated position of the plurality of positions; determining that a difference between the first viewing angle and the second viewing angle is less than a threshold angle; and determining the effective viewing angle as a third viewing angle between the first viewing angle and the second viewing angle. ### Claim 18 (depends on 17) The television receiver of claim 17, wherein: the first viewing angle is associated with a first compensation mode of a plurality of compensation modes; the second viewing angle is associated with a second compensation mode of the plurality of compensation modes; and determining the effective viewing angle as the third viewing angle between the first viewing angle and the second viewing angle comprises determining the third viewing angle as associated with an average of the first compensation mode and the second compensation mode. ### Claim 19 (depends on 12) The television receiver of claim 12, wherein the one or more sensors comprises an acoustic camera or 3D imager to determine locations and/or motions of the set of users relative to the display device. ### Claim 20 (depends on 12) The television receiver of claim 12, wherein adjusting the image display settings comprises adjusting one or more of a brightness setting, a color setting, or a contrast setting. ### Claim 21 (depends on 12) The television receiver of claim 12, wherein adjusting image display settings comprises transforming input images provided to the display device by applying one or more of a brightness transformation, a color transformation, or a contrast transformation.