# US 11,309,962 B2 · Device for image based services > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,309,962 B2 - Document ID: US11309962B2 - Status: Granted - Kind: B2 - Application number: 16/965,322 - Filed: 2019-01-22 - Published: 2021-04-22 - Granted: 2022-04-19 - Earliest claimed: 2018-01-29 - Assignees: Signify Holding B.V. - Applicants: Signify Holding B.V. - Inventors: Bartel Marinus Van De Sluis; Dzmitry Viktorovich Aliakseyeu; Mustafa Tolga Eren; Stephanus Joseph Johannes Nijssen - Web page: https://patentgrep.com/patent/US11309962B2 ## CPC - G01C 21/206: {specially adapted for indoor navigation} - H04B 10/116: Visible light communication - H04B 10/60: Receivers - H04N 23/667: Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes - H04N 23/73: by influencing the exposure time - G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S) - H04B: TRANSMISSION - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A device is provided having: a camera for capturing an image by capturing a repetitive series of a set of frames; wherein the camera comprises a first group of camera settings associated with detecting Visible Light Communication and a second group of camera settings not associated with detecting Visible Light Communication; wherein said set of frames comprises a first subset of frames and a second subset of frames, wherein each subset comprises at least one frame; a processor configured to switch the camera periodically between the first group of camera settings and the second group of camera settings for capturing the image by capturing each first subset of frames of the repetitive series of the set of frames with the first group of camera settings and each second subset of frames of the repetitive series of the set of frames with the second group of camera settings. ## Claims ### Claim 1 A device for image based services comprising: a camera for capturing an image by capturing a repetitive series of a set of frames; wherein the camera comprises a first group of camera settings associated with detecting Visible Light Communication and a second group of camera settings not associated with detecting Visible Light Communication; wherein said set of frames comprises a first subset of frames and a second subset of frames, wherein each subset comprises at least one frame; a processor configured to: (i) switch the camera periodically between the first group of camera settings and the second group of camera settings for capturing the image by capturing each first subset of frames of the repetitive series of the set of frames with the first group of camera settings and each second subset of frames of the repetitive series of the set of frames with the second group of camera settings; (ii) enable image based services based on at least one frame of the first subset of frames and/or at least one frame of the second subset of frames; wherein said first subset of frames comprises a first number of frames and said second subset of frames comprises a second number of frames; wherein the processor is further configured to increase or decrease said first number of frames and/or said second number frames responsive to a characteristic detected in the image, wherein the characteristic in the image provides a cue for the device to increase or decrease said first number of frames and/or said second number frames. ### Claim 2 (depends on 1) The device according to claim 1, wherein the characteristic is one of: a facial feature, a luminaire, a light source, a movement of an object, a gesture, a person, an emotion, a contour, an edge, a shape, a code, or a location indicator. ### Claim 3 (depends on 1) The device according to claim 1, wherein the first group of camera settings comprises an exposure time of at most 1/1000 seconds, wherein the second group of camera settings comprises an exposure time of at least 1/1000 seconds. ### Claim 4 (depends on 1) The device according to claim 1, wherein the first group of camera settings comprises an exposure time proportional to a symbol clock of the device, the symbol clock being related to detecting the Visible Light Communication. ### Claim 5 (depends on 1) The device according to claim 1, wherein the first group of camera settings comprises an exposure time equal to at least a quarter of a symbol clock of the device, the symbol clock being related to detecting the Visible Light Communication. ### Claim 6 (depends on 1) The device according to claim 1, wherein the first group of camera settings comprises an ISO value of at least 400. ### Claim 7 (depends on 1) The device according to claim 1, wherein the first group of camera settings comprises a resolution of at most 1 megapixel, wherein the second group of camera settings comprises a resolution of at least 1 megapixel. ### Claim 8 (depends on 1) The device according to claim 1, wherein the image comprises a feature representing a physical feature, and wherein the second group of camera settings comprises a point of focus set to a distance defined between 90% and 110% of a shortest distance between the camera and the physical feature. ### Claim 9 (depends on 1) The device according to claim 1, wherein said first subset of frames and said second subset of frames comprise an equal number of frames. ### Claim 10 A method for image based services, the method being performed by a device comprising a camera and a processor: wherein the camera comprises a first group of camera settings associated with detecting Visible Light Communication and a second group of camera settings not associated with detecting Visible Light Communication; wherein the method comprises the steps of: capturing an image with the camera by capturing a repetitive series of a set of frames, wherein said set of frames comprises a first subset of frames and a second subset of frames, wherein each subset comprises at least one frame; switching the camera periodically between the first group of camera settings and the second group of camera settings for capturing the image by capturing each first subset of frames of the repetitive series of the set of frames with the first group of camera settings and each second subset of frames of the repetitive series of the set of frames with the second group of camera settings; enabling image based services based on at least one frame of the first subset of frames and/or at least one frame of the second subset of frames; wherein said first subset of frames comprises a first number of frames and said second subset of frames comprises a second number of frames; wherein the method further comprises the step of: increasing or decreasing said first number of frames and/or said second number frames responsive to a characteristic detected in the image, wherein the characteristic in the image provides a cue for the device to increase or decrease said first number of frames and/or said second number frames. ### Claim 11 (depends on 10) The method according to claim 10, wherein the characteristic is one of: a facial feature, a luminaire, a light source, a movement of an object, a gesture, a person, an emotion, a contour, an edge, a shape, a code, or a location indicator. ### Claim 12 (depends on 10) The method according to claim 10, wherein the first group of camera settings comprises an exposure time of at most 1/1000 seconds, wherein the second group of camera settings comprises an exposure time of at least 1/1000 seconds. ### Claim 13 (depends on 10) A non-transitory computer readable medium including a computer program product for a computing device, the computer program product comprising computer program code to perform the method of claim 10 when the computer program product is run on a processing unit of the computing device.