# US 11,443,844 B2 · Smart tray for measuring food intake and weight change, and weight management system comprising same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,443,844 B2 - Document ID: US11443844B2 - Status: Granted - Kind: B2 - Application number: 16/319,146 - Filed: 2017-07-18 - Published: 2021-10-28 - Granted: 2022-09-13 - Earliest claimed: 2016-07-20 - Applicants: Kwang-Cheol Jeong - Inventors: Kwang-Cheol Jeong - Web page: https://patentgrep.com/patent/US11443844B2 ## CPC - G16H 20/60: relating to nutrition control, e.g. diets - G01G 19/4146: {for controlling caloric intake, e.g. diet control} - G01G 19/44: for weighing persons - G08B 21/182: {Level alarms, e.g. alarms responsive to variables exceeding a threshold} - H04N 23/57: Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices - H04N 23/60: Control of cameras or camera modules - H04Q 9/00: Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom - H04N 23/51: Housings - H04Q 2209/40: using a wireless architecture - G16H: HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA - G01G: WEIGHING (sorting by weighing B07C5/16) - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - H04Q: SELECTING (switches, relays, selectors H01H; wireless communication networks H04W) ## Abstract The present invention relates to a smart tray for measuring a food intake and a weight change, and a weight management system comprising the smart tray, the smart tray comprising: a weight sensor for detecting the weight of an object placed on the upper surface and generating object weight information; an input unit for inputting the current weight information of an eater; and a control unit for controlling the weight sensor, generating weight deduction information, which is a value deducted from the object weight information, as food intake information within a predetermined time, and, by using same, generating estimated changed weight information. ## Claims ### Claim 1 A smart tray for measuring food intake and a change in body weight, comprising: a weight sensor to sense a weight of each item placed on a top surface of the weight sensor and generate weight information of the each item as an item weight information; an input unit to input current body weight information of a person who consumes food as an eater; a camera unit comprising a pop-up camera which is being in pop-up status when the weight of the each item is sensed by the weight sensor, takes an image of the eater and generates image information of the eater; and a control unit that controls the weight sensor to generate weight deduction information, which is a value subtracted from the item weight information in a predetermined time, as food intake information and generates estimated body weight information, which was changed, using the food intake information, wherein the control unit analyzes the weight deduction information and, when the weight deduction information is equal to or greater than a predetermined value in the predetermined time, determines that the weight deduction information is not the food intake information, and the input unit is a key pad, a key button or a dial input device. ### Claim 2 (depends on 1) The smart tray according to claim 1, further comprising a display unit, wherein the control unit displays the food intake information, the current body weight information and the estimated body weight information on the display unit. ### Claim 3 (depends on 2) The smart tray according to claim 2, further comprising a communication unit to communicate with an external smartphone, wherein the control unit transmits the food intake information, the current body weight information and the estimated body weight information to the external smartphone through the communication unit. ### Claim 4 (depends on 3) The smart tray according to claim 3, wherein the communication unit receives the current body weight information from an external body weight scale. ### Claim 5 (depends on 1) The smart tray according to claim 1, further comprising an alarm unit, wherein the control unit compares target body weight information input through the input unit with the estimated body weight information and, when the estimated body weight information exceeds the target body weight information, operates the alarm unit. ### Claim 6 (depends on 1) The smart tray according to claim 1, further comprising a timer, wherein the estimated body weight information includes ingestion time information acquired through the timer as well as the current body weight information and the food intake information. ### Claim 7 (depends on 1) The smart tray according to claim 1, further comprising a communication unit to communicate with an external smartphone and an external body weight scale, wherein the control unit acquires actually altered body weight information, which is body weight information after a meal, from the external body weight scale, compares the actually altered body weight information with the estimated body weight information and then generates correction information. ### Claim 8 (depends on 7) The smart tray according to claim 7, further comprising a memory, wherein the control unit accumulates the current body weight information, the food intake information and the actually altered body weight information in a predetermined period of time, and then stores the current body weight information, the food intake information, and the actually altered body weight information in the memory. ### Claim 9 (depends on 8) The smart tray according to claim 8, wherein the control unit generates estimated body weight change information using a food intake-body weight change database. ### Claim 10 (depends on 1) The smart tray according to claim 1, wherein the food intake information is deleted or input through the input unit. ### Claim 11 A body weight management system for measuring food intake and a change in body weight, comprising: a body weight scale to generate current body weight information of an eater; a smart tray, wherein the smart tray includes a weight sensor to sense a weight of each item placed on a top surface of the weight sensor and generate weight information of the each item as an item weight information, a camera unit comprising a pop-up camera which is being in pop-up status when the weight of the each item is sensed by the weight sensor, takes an image of the eater and generates image information of the eater, a communication unit to communicate with a mobile communication terminal and the body weight scale, and a control unit that receives the current body weight information through the communication unit, controls the weight sensor to generate weight deduction information, which is a value subtracted from the item weight information in a predetermined time, as food intake information, and generates estimated body weight information, which was changed, using the food intake information; and the mobile communication terminal to receive the food intake information, the current body weight information and the estimated body weight information from the smart tray, wherein the control unit analyzes the weight deduction information and, when the weight deduction information is equal to or greater than a predetermined value in the predetermined time, determines that the weight deduction information is not the food intake information, and wherein the mobile communication terminal is a smartphone.