# US 2019/0246476 A1 · Smart lighting system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0246476 A1 - Document ID: US20190246476A1 - Status: Published application - Kind: A1 - Application number: 16/272,821 - Filed: 2019-02-11 - Published: 2019-08-08 - Earliest claimed: 2014-10-23 - Assignees: Vivint, Inc. - Applicants: Vivint, Inc. - Inventors: Harry Rein - Web page: https://patentgrep.com/patent/US20190246476A1 ## CPC - H05B 47/16: by timing means - H05B 47/115: by determining the presence or movement of objects or living beings - H05B 47/125: by using cameras - Y02B 20/40: Control techniques providing energy savings, e.g. smart controller or presence detection - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract According to at least one embodiment, a computer-implemented method to illuminate a room is described. At least one person entering the room may be identified. The room may be illuminated based at least in part on the identifying. An occupancy count for the room may be maintained based at least in part on the illuminating, wherein the occupancy count comprises a number of one or more people present in the room. The room may be darkened based at least in part on the occupancy count for the room reaching a pre-determined count. ## Claims ### Claim at position 1 1-20. (canceled) ### Claim 21 A method to illuminate a room, the method comprising: detecting a person entering the room comprising at least one light; tracking a pattern of room occupancy for the room based at least in part on the detecting; determining a darkening time period for the at least one light based at least in part on the pattern of room occupancy; and adjusting the at least one light after an expiration of the determined darkening time. ### Claim 22 (depends on 21) The method of claim 21, further comprising: determining that an occupancy count for the room falls below a pre-determined count; and initiating the darkening time period based at least in part on determining that the occupancy count for the room falls below the pre-determined count, wherein adjusting the at least one light is based at least in part on the initiating. ### Claim 23 (depends on 21) The method of claim 21, further comprising: identifying an interaction between the person and an appliance in the room, wherein the determining the darkening time period for the at least one light is based at least in part on the identified interaction. ### Claim 24 (depends on 23) The method of claim 23, further comprising: receiving visual data indicating one or more activities occurring in the room from a camera positioned in the room, wherein identifying the interaction is based at least in part on the visual data. ### Claim 25 (depends on 23) The method of claim 23, wherein the adjusting the at least one light is based at least in part on a type of the appliance. ### Claim 26 (depends on 21) The method of claim 21, further comprising: predicting, based at least in part on the pattern of room occupancy, a schedule for the person indicating a predicted time of day the person will enter the room; and illuminating the room at the predicted time of day based at least in part on the schedule. ### Claim 27 (depends on 26) The method of claim 26, further comprising: determining, after illuminating the room, that an occupancy count for the room is below a pre-determined count; and initiating the darkening time period based at least in part on determining that the occupancy count for the room is below the pre-determined count, wherein adjusting the at least one light is based at least in part on the initiating. ### Claim 28 (depends on 26) The method of claim 26, further comprising: receiving a calendar associated with the person, wherein the predicting is based at least in part on the calendar. ### Claim 29 (depends on 21) The method of claim 21, further comprising: maintaining an occupancy count for the room comprising a number of people present in the room, wherein tracking the pattern of room occupancy is based at least in part on the occupancy count. ### Claim 30 (depends on 21) The method of claim 21, wherein adjusting the at least one light comprises adjusting the at least one light while the person is in the room. ### Claim 31 (depends on 21) The method of claim 21, wherein adjusting the at least one light comprises darkening the at least one light. ### Claim 32 (depends on 21) The method of claim 21, further comprising: detecting directional motion of the person based at least in part on one or more lasers, wherein tracking the pattern of room occupancy is based at least in part on the directional motion of the person. ### Claim 33 An automation system to illuminate a room comprising: a processor; a memory in electronic communication with the processor; and instructions stored in the memory, the instructions being executable by the processor to: detect a person entering the room comprising at least one light; track a pattern of room occupancy for the room based at least in part on the detecting; determine a darkening time period for the at least one light based at least in part on the pattern of room occupancy; and adjust the at least one light after an expiration of the determined darkening time. ### Claim 34 (depends on 33) The automation system of claim 33, wherein the instructions are further executable by the processor to: determine that an occupancy count for the room falls below a pre-determined count; and initiate the darkening time period based at least in part on determining that the occupancy count for the room falls below the pre-determined count, wherein adjusting the at least one light is based at least in part on the initiating. ### Claim 35 (depends on 33) The automation system of claim 33, wherein the instructions are further executable by the processor to: identify an interaction between the person and an appliance in the room, wherein the determining the darkening time period for the at least one light is based at least in part on the identified interaction. ### Claim 36 (depends on 35) The automation system of claim 35, wherein the instructions are further executable by the processor to: receive visual data indicating one or more activities occurring in the room from a camera positioned in the room, wherein identifying the interaction is based at least in part on the visual data. ### Claim 37 (depends on 33) The automation system of claim 33, wherein the instructions are further executable by the processor to: predict, based at least in part on the pattern of room occupancy, a schedule for the person indicating a predicted time of day the person will enter the room; and illuminate the room at the predicted time of day based at least in part on the schedule. ### Claim 38 A non-transitory computer-readable medium storing instructions executable by a processor to: detect a person entering a room comprising at least one light; track a pattern of room occupancy for the room based at least in part on the detecting; determine a darkening time period for the at least one light based at least in part on the pattern of room occupancy; and adjust the at least one light after an expiration of the determined darkening time. ### Claim 39 (depends on 38) The computer-readable medium of claim 38, wherein the instructions are executable by the processor to: determine that an occupancy count for the room falls below a pre-determined count; and initiate the darkening time period based at least in part on determining that the occupancy count for the room falls below the pre-determined count, wherein adjusting the at least one light is based at least in part on the initiating. ### Claim 40 (depends on 38) The computer-readable medium of claim 38, wherein the instructions are executable by the processor to: identify an interaction between the person and an appliance in the room, wherein the determining the darkening time period for the at least one light is based at least in part on the identified interaction.