# US 11,114,898 B2 · Device and method for supporting improved communication speed in wireless power transmission system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,114,898 B2 - Document ID: US11114898B2 - Status: Granted - Kind: B2 - Application number: 16/979,821 - Filed: 2019-03-07 - Published: 2021-02-11 - Granted: 2021-09-07 - Earliest claimed: 2018-03-12 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Yongcheol Park; Gyunghwan Yook - Web page: https://patentgrep.com/patent/US11114898B2 ## CPC - H02J 50/20: using microwaves or radio frequency waves - H02J 7/42: with electronic devices having internal batteries, e.g. mobile phones - H02J 50/10: using inductive coupling - H02J 50/40: using two or more transmitting or receiving devices (H02J50/50 takes precedence) - H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices - H02J 7/47: Arrangements for checking compatibility or authentication between one component, e.g. a battery or a battery charger, and another component, e.g. a power source - H02J 50/12: of the resonant type - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract The present invention relates to a device and method for supporting improved communication speed in a wireless power transmission system. The present specification provides a method comprising the steps of: generating wireless power at an operating frequency; configuring n, as the number of cycles per bit, which is used for transmitting one bit at the operating frequency; aligning each bit of the data with the n cycles; causing the operating frequency to transition between differential biphases according to the value of said each bit during the n cycles; and transmitting the wireless power to a wireless power receiving device on the basis of magnetic coupling at the transitioning operating frequency. ## Claims ### Claim 1 A method for transmitting data and wireless power by a wireless power transmitter, comprising: generating the wireless power at an operating frequency; setting the number n of cycles per bit used to transmit one bit at the operating frequency; aligning each bit of the data to the n cycles; transitioning the operating frequency between differential bi-phases depending on values of each bit for the n cycles; and transmitting the wireless power to a wireless power receiver based on magnetic coupling at the transitioned operating frequency. ### Claim 2 (depends on 1) The method of claim 1, wherein the number of cycles per unit bit is variably set based on a modulation level. ### Claim 3 (depends on 2) The method of claim 2, wherein the number of cycles per unit bit decreases based on the increase in the modulation level. ### Claim 4 (depends on 1) The method of claim 1, wherein the number of cycles per unit bit or the modulation level is set in a negotiation phase related to the transmission of the wireless power. ### Claim 5 (depends on 2) The method of claim 2, wherein the information on the modulation level is included in a capability packet of the wireless power transmitter and transmitted to the wireless power receiver. ### Claim 6 (depends on 5) The method of claim 5, wherein the capability packet of the wireless power transmitter is transmitted as a response to a request packet of the wireless power receiver. ### Claim 7 (depends on 6) The method of claim 6, wherein the request packet of the wireless power receiver includes information on a modulation level selected by the wireless power receiver. ### Claim 8 (depends on 1) The method of claim 1, wherein the modulation level or the number of cycles per unit bit is defined as a default. ### Claim 9 A wireless power transmitter transmitting data and wireless power, comprising: a power conversion unit that generates the wireless power at an operating frequency and transmits the generated wireless power to a wireless power receiver based on magnetic coupling; and a communication/control unit that sets the number n of cycles per bit used to transmit one bit at the operating frequency, aligns each bit of the data to n cycles, and transitions the operating frequency between differential bi-phases depending on values of each bit for the n cycles. ### Claim 10 (depends on 9) The wireless power transmitter of claim 9, wherein the number of cycles per unit bit is variably set based on a modulation level. ### Claim 11 (depends on 10) The wireless power transmitter of claim 10, wherein the number of cycles per unit bit decreases based on the increase in the modulation level. ### Claim 12 (depends on 10) The wireless power transmitter of claim 10, wherein the number of cycles per unit bit or the modulation level is set in a negotiation phase related to the transmission of the wireless power. ### Claim 13 (depends on 10) The wireless power transmitter of claim 10, wherein the communication/control unit transmits information on the modulation level to the wireless power receiver by including the information on the modulation level in a capability packet of the wireless power transmitter. ### Claim 14 (depends on 13) The wireless power transmitter of claim 13, wherein the communication/control unit transmits the capability packet of the wireless power transmitter as a response to a request packet of the wireless power receiver. ### Claim 15 A wireless power receiver receiving data and wireless power, comprising: a power pick-up unit that receives the wireless power from a wireless power transmitter at an operating frequency; and a communication/control unit that detects n cycles aligning each bit at the operating frequency based on the number n of cycles per bit negotiated with the wireless power transmitter in advance, detects a transition phase of the operating frequency for the n cycles, and decodes data received from the wireless power transmitter based on the transition phase of the operating frequency.