# US 2021/0243618 A1 · Method for Controlling Electromagnetic Interference and Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0243618 A1 - Document ID: US20210243618A1 - Status: Published application - Kind: A1 - Application number: 17/236,609 - Filed: 2021-04-21 - Published: 2021-08-05 - Earliest claimed: 2018-10-23 - Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Applicants: Guangdong OPPO Mobile Telecommunications Corp., Ltd. - Inventors: Guoqiang Jiang - Web page: https://patentgrep.com/patent/US20210243618A1 ## CPC - H04W 24/02: Arrangements for optimising operational condition - H04B 1/715: Interference-related aspects - H04W 24/08: Testing, {supervising or monitoring} using real traffic - G09G 3/2096: {Details of the interface to the display terminal specific for a flat panel (suitable for both CRT and flat panel G09G5/006; specific for a CRT G09G1/167)} - G09G 2330/06: Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation - H04B 2001/7154: {with means for preventing interference} - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - 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) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract Disclosed are a method for controlling electromagnetic interference and an electronic device. The method includes: detecting electromagnetic interference between a radio frequency system and a display screen of an electronic device in response to detecting that the electronic device is in a preset scene, the preset scene including a screen-on scene; and performing a frequency hopping switching operation on a mobile industry processor interface (MIPI) of the display screen in response to detecting the electromagnetic interference. ## Claims ### Claim 1 A method for controlling electromagnetic interference, comprising: detecting electromagnetic interference between a radio frequency system and a display screen of an electronic device in response to detecting that the electronic device is in a preset scene, the preset scene comprising a screen-on scene; and performing a frequency hopping switching operation on a mobile industry processor interface (MIPI) of the display screen in response to detecting the electromagnetic interference. ### Claim 2 (depends on 1) The method of claim 1, wherein detecting the electromagnetic interference between the radio frequency system and the display screen of the electronic device comprises: obtaining at least one detection value of a first frequency and a detection value of a second frequency, wherein the first frequency is a communication frequency of the radio frequency system, and the second frequency is an MIPI frequency of the display screen; and detecting the electromagnetic interference based on the at least one detection value of the first frequency and the detection value of the second frequency. ### Claim 3 (depends on 2) The method of claim 2, wherein detecting the electromagnetic interference based on the at least one detection value of the first frequency and the detection value of the second frequency comprises: determining a first frequency set based on the at least one detection value of the first frequency, wherein the first frequency set comprises at least one communication frequency enabled by the radio frequency system in the preset scene; determining a second frequency set based on the detection value of the second frequency, wherein the second frequency set comprises an MIPI frequency enabled by the display screen in the preset scene, and at least one of division frequency and multiplication frequency of the enabled MIPI frequency; and detecting the electromagnetic interference based on the first frequency set and the second frequency set. ### Claim 4 (depends on 1) The method of claim 1, wherein performing the frequency hopping switching operation on the mobile industry processor interface (MIPI) of the display screen comprises: determining a target frequency value of an MIPI frequency of the display screen; and adjusting the MIPI frequency of the display screen to the target frequency value. ### Claim 5 (depends on 4) The method of claim 4, wherein determining the target frequency value of the MIPI frequency of the display screen comprises: obtaining an available frequency range or an available frequency value of the MIPI frequency of the display screen; obtaining a first frequency set, wherein the first frequency set comprises at least one communication frequency enabled by the electronic device in the preset scene; and determining the target frequency value of the MIPI frequency of the display screen based on the available frequency range or the available frequency value, and the first frequency set. ### Claim 6 (depends on 5) The method of claim 5, wherein adjusting the MIPI frequency of the display screen to the target frequency value comprises: obtaining a pre-configured target value of a screen parameter associated with the target frequency value, wherein the target value is associated with a reference value, the reference value is determined by the electronic device under a first constraint condition based on a preset FPS (frames per second) calculation equation and the target frequency value, the first constraint condition refers to that a change amount of FPS of the display screen after MIPI frequency switching is lower than a first preset threshold, and the screen parameter comprises at least one porch value of a horizontal back porch (HBP), a horizontal front porch (HFP), a vertical back porch (VBP), a vertical front porch (VFP), a vertical sync active (VSA), a horizontal sync active (HSA) in the preset FPS calculation equation; and adjusting a value of the screen parameter to the target value, and adjusting the MIPI frequency of the display screen to the target frequency value. ### Claim 7 (depends on 6) The method of claim 6, wherein the screen parameter comprises a horizontal screen parameter, and the horizontal screen parameter comprises at least one of the HBP, the HFP and the HSA; and the target value is determined by the electronic device adjusting the reference value under a second constraint condition, wherein the second constraint condition refers to that a change amount of a line scanning period of the display screen after switching the MIPI frequency is lower than a second preset threshold. ### Claim 8 (depends on 2) The method of claim 2, wherein the electronic device comprises a baseband processor (BP) and an application processor (AP), and the AP is connected with a modem; obtaining the at least one detection value of the first frequency and the detection value of the second frequency comprises: controlling the BP to perform: obtaining the at least one detection value of the first frequency and reporting the at least one detection value of the first frequency to the AP through a preset channel; and controlling the AP to perform: receiving the at least one detection value of the first frequency from the BP, and obtaining the detection value of the second frequency; and detecting the electromagnetic interference based on the at least one detection value of the first frequency and the detection value of the second frequency comprises: controlling the AP to detect the electromagnetic interference based on the at least one detection value of the first frequency and the detection value of the second frequency. ### Claim 9 (depends on 2) The method of claim 2, wherein the electronic device comprises a baseband processor (BP) and an application processor (AP), and the AP is connected with a modem; obtaining the at least one detection value of the first frequency and the detection value of the second frequency comprises: controlling the BP to perform: obtaining the at least one detection value of the first frequency, and receiving the detection value of the second frequency from the AP through a preset channel; and controlling the AP to perform: obtaining the detection value of the second frequency and sending the detection value of the second frequency to the BP; and detecting the electromagnetic interference based on the at least one detection value of the first frequency and the detection value of the second frequency comprises: controlling the BP to detect the electromagnetic interference based on the at least one detection value and the detection value of the second frequency. ### Claim 10 An electronic device, comprising: a processor; a memory; a communication interface; and one or more programs, wherein, the one or more programs are stored in the memory and configured to be executed by the processor, and the one or more programs comprise instructions for executing a method for controlling electromagnetic interference, the method comprising: detecting electromagnetic interference between a radio frequency system and a display screen of an electronic device in response to detecting that the electronic device is in a preset scene, the preset scene comprising a screen-on scene; and performing a frequency hopping switching operation on a mobile industry processor interface (MIPI) of the display screen in response to detecting the electromagnetic interference. ### Claim 11 (depends on 10) The electronic device of claim 10, wherein detecting the electromagnetic interference between the radio frequency system and the display screen of the electronic device comprises: obtaining at least one detection value of a first frequency and a detection value of a second frequency, wherein the first frequency is a communication frequency of the radio frequency system, and the second frequency is an MIPI frequency of the display screen; and detecting the electromagnetic interference based on the at least one detection value of the first frequency and the detection value of the second frequency. ### Claim 12 (depends on 11) The electronic device of claim 11, wherein detecting the electromagnetic interference based on the at least one detection value of the first frequency and the detection value of the second frequency comprises: determining a first frequency set based on the at least one detection value of the first frequency, wherein the first frequency set comprises at least one communication frequency enabled by the radio frequency system in the preset scene; determining a second frequency set based on the detection value of the second frequency, wherein the second frequency set comprises an MIPI frequency enabled by the display screen in the preset scene, and at least one of division frequency and multiplication frequency of the enabled MIPI frequency; and detecting the electromagnetic interference based on the first frequency set and the second frequency set. ### Claim 13 (depends on 10) The electronic device of claim 10, wherein performing the frequency hopping switching operation on the mobile industry processor interface (MIPI) of the display screen comprises: determining a target frequency value of an MIPI frequency of the display screen; and adjusting the MIPI frequency of the display screen to the target frequency value. ### Claim 14 (depends on 13) The electronic device of claim 13, wherein determining the target frequency value of the MIPI frequency of the display screen comprises: obtaining an available frequency range or an available frequency value of the MIPI frequency of the display screen; obtaining a first frequency set, wherein the first frequency set comprises at least one communication frequency enabled by the electronic device in the preset scene; and determining the target frequency value of the MIPI frequency of the display screen based on the available frequency range or the available frequency value, and the first frequency set. ### Claim 15 (depends on 14) The electronic device of claim 14, wherein adjusting the MIPI frequency of the display screen to the target frequency value comprises: obtaining a pre-configured target value of a screen parameter associated with the target frequency value, wherein the target value is associated with a reference value, the reference value is determined by the electronic device under a first constraint condition based on a preset FPS (frames per second) calculation equation and the target frequency value, the first constraint condition refers to that a change amount of FPS of the display screen after MIPI frequency switching is lower than a first preset threshold, and the screen parameter comprises at least one porch value of a horizontal back porch (HBP), a horizontal front porch (HFP), a vertical back porch (VBP), a vertical front porch (VFP), a vertical sync active (VSA), a horizontal sync active (HSA) in the preset FPS calculation equation; and adjusting a value of the screen parameter to the target value, and adjusting the MIPI frequency of the display screen to the target frequency value. ### Claim 16 (depends on 15) The electronic device of claim 15, wherein the screen parameter comprises a horizontal screen parameter, and the horizontal screen parameter comprises at least one of the HBP, the HFP and the HSA; and the target value is determined by the electronic device adjusting the reference value under a second constraint condition, wherein the second constraint condition refers to that a change amount of a line scanning period of the display screen after switching the MIPI frequency is lower than a second preset threshold. ### Claim 17 (depends on 11) The electronic device of claim 11, wherein the electronic device comprises a baseband processor (BP) and an application processor (AP), and the AP is connected with a modem; obtaining the at least one detection value of the first frequency and the detection value of the second frequency comprises: controlling the BP to perform: obtaining the at least one detection value of the first frequency and reporting the at least one detection value of the first frequency to the AP through a preset channel; and controlling the AP to perform: receiving the at least one detection value of the first frequency from the BP, and obtaining the detection value of the second frequency; and detecting the electromagnetic interference based on the at least one detection value of the first frequency and the detection value of the second frequency comprises: controlling the AP to detect the electromagnetic interference based on the at least one detection value of the first frequency and the detection value of the second frequency. ### Claim 18 (depends on 11) The electronic device of claim 11, wherein the electronic device comprises a baseband processor (BP) and an application processor (AP), and the AP is connected with a modem; obtaining the at least one detection value of the first frequency and the detection value of the second frequency comprises: controlling the BP to perform: obtaining the at least one detection value of the first frequency, and receiving the detection value of the second frequency from the AP through a preset channel; and controlling the AP to perform: obtaining the detection value of the second frequency and sending the detection value of the second frequency to the BP; and detecting the electromagnetic interference based on the at least one detection value of the first frequency and the detection value of the second frequency comprises: controlling the BP to detect the electromagnetic interference based on the at least one detection value and the detection value of the second frequency. ### Claim 19 A non-transitory computer readable storage medium, having a computer program for exchanging electronic data stored thereon, wherein the computer program causes a computer to execute a method for controlling electromagnetic interference, the method comprising: detecting electromagnetic interference between a radio frequency system and a display screen of an electronic device in response to detecting that the electronic device is in a preset scene, the preset scene comprising a screen-on scene; and performing a frequency hopping switching operation on a mobile industry processor interface (MIPI) of the display screen in response to detecting the electromagnetic interference. ### Claim 20 (depends on 19) The non-transitory computer readable storage medium of claim 19, wherein detecting the electromagnetic interference between the radio frequency system and the display screen of the electronic device comprises: obtaining at least one detection value of a first frequency and a detection value of a second frequency, wherein the first frequency is a communication frequency of the radio frequency system, and the second frequency is an MIPI frequency of the display screen; and detecting the electromagnetic interference based on the at least one detection value of the first frequency and the detection value of the second frequency.