# US 9,521,472 B2 · Controlling method for coexistence of radio frequency identification and display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,521,472 B2 - Document ID: US9521472B2 - Status: Granted - Kind: B2 - Application number: 13/925,853 - Filed: 2013-06-25 - Published: 2014-03-06 - Granted: 2016-12-13 - Earliest claimed: 2012-08-29 - Assignees: E Ink Holdings Inc. - Applicants: E Ink Holdings Inc. - Inventors: Cheng-Hao Lee - Web page: https://patentgrep.com/patent/US9521472B2 ## CPC - H04Q 9/02: Automatically-operated arrangements - G06F 3/147: using display panels - G06K 19/0727: {the arrangement being a circuit facilitating integration of the record carrier with a hand-held device such as a smart phone of PDA} - G09G 2330/02: Details of power systems and of start or stop of display operation - G09G 2330/021: Power management, e.g. power saving - G09G 2370/16: Use of wireless transmission of display information - G09G 2380/04: Electronic labels - H04Q: SELECTING (switches, relays, selectors H01H; wireless communication networks H04W) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS - 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 A controlling method, adapted for an electronic device for coexistence of radio frequency identification (RFID) and display functions, is provided. The controlling method includes powering on a display of the electronic device and controlling the display to show a frame. Next, a RFID module of the electronic device is powered on to perform a wireless communication function of the RFID module. The controlling method of the invention efficiently controls the execution of the display and wireless communication functions, so as to prevent mutual interference. ## Claims ### Claim 1 A controlling method for coexistence of radio frequency identification (RFID) and display functions, applicable to an electronic device, the controlling method comprising: determining whether the electronic device executes a first integration mode or a second integration mode; powering on a display of the electronic device; controlling the display to show a frame; powering on a RFID module of the electronic device; and executing a wireless communication function of the RFID module, wherein the first integration mode is an integration of a display mode and an error detection mode, wherein if the electronic device executes the first integration mode, the step of executing the wireless communication function of the RFID module comprises: reading a product history recorded in a RFID label of the electronic device, and the powering on of the display is ceased after the product history has been read, and wherein the display of the electronic device is an electrophoretic display (EPD), and the electronic device is an electronic shelf label (ESL). ### Claim 2 (depends on 1) The controlling method according to claim 1, wherein after the step of executing the wireless communication function of the RFID module, the controlling method further comprises: ceasing powering on the RFID module. ### Claim 3 (depends on 2) The controlling method according to claim 2, wherein after the step of ceasing powering on the RFID module, the controlling method further comprises: controlling the display of the electronic device to enter a power-saving mode. ### Claim 4 (depends on 1) The controlling method according to claim 1, wherein if the electronic device executes the first integration mode, the step of executing the wireless communication function of the RFID module further comprises: controlling the electronic device to connect a back-end application database to identify and compare the product history recorded in the RFID label. ### Claim 5 (depends on 4) The controlling method according to claim 4, wherein the product history comprises one of a production serial number, a product specification, a manufacture date, a point-of-sale record, and a maintenance record of the electronic device or a combination of the foregoing. ### Claim 6 (depends on 5) The controlling method according to claim 5, further comprising: determining whether the electronic device is maintained, and if the electronic device is maintained, updating the maintenance record stored in the product history. ### Claim 7 (depends on 1) The controlling method according to claim 1, wherein if the electronic device executes the second integration mode, the step of executing the wireless communication function of the RFID module comprises: receiving data that is to be stored via the RFID module; and storing the data that is to be stored in the RFID label of the electronic device. ### Claim 8 (depends on 1) The controlling method according to claim 1, further comprising: receiving a password inputted by a user via the electronic device; and determining whether the password matches a preset password, and if the password matches the preset password, controlling the electronic device to execute the first integration mode or the second integration mode. ### Claim 9 (depends on 1) The controlling method according to claim 1, wherein hardware circuits of the RFID module of the electronic device are disposed in a back plate of the display or printed on a flexible printed circuit of the display.