# US 2021/0344235 A1 · Method and device for transmitting data 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 2021/0344235 A1 - Document ID: US20210344235A1 - Status: Published application - Kind: A1 - Application number: 17/280,503 - Filed: 2019-07-11 - Published: 2021-11-04 - Earliest claimed: 2018-10-23 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Jinho YOUN; Taewook KWON; Jaeyeol KIM; Hyoungseok KIM; Dohyeon SON - Web page: https://patentgrep.com/patent/US20210344235A1 ## CPC - H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices - G06F 1/1632: {External expansion units, e.g. docking stations} - G06F 1/266: {Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips} - G06F 11/004: {Error avoidance (G06F11/07 and subgroups take precedence)} - G06F 11/0736: {in functional embedded systems, i.e. in a data processing system designed as a combination of hardware and software dedicated to performing a certain function (testing or monitoring of automated control systems G05B23/02)} - G06F 11/0751: {Error or fault detection not based on redundancy (power supply failures G06F1/30; network fault management H04L41/06)} - H02J 50/40: using two or more transmitting or receiving devices (H02J50/50 takes precedence) - H04B 5/24: Inductive coupling - H04B 5/263: {Multiple coils at either side} - H04B 5/266: {One coil at each side, e.g. with primary and secondary coils} - H04B 5/79: for data transfer in combination with power transfer - G06F 11/0793: {Remedial or corrective actions (recovery from an exception in an instruction pipeline G06F9/3861; by retry G06F11/1402; for recovering from a failure of a protocol instance or entity H04L69/40)} - H02J 50/90: involving detection or optimisation of position, e.g. alignment - H04B 5/45: Transponders - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04B: TRANSMISSION ## Abstract The present disclosure relates to a method and a device for transmitting data in a wireless power transmission system. The method for transmitting data by a wireless power transmitter in a wireless power transmission system may comprise the steps of: receiving from a wireless power receiver, within a first control error interval, a first control error packet containing a control error value with respect to power transmitted from the wireless power transmitter; determining the size of a first data packet on the basis of the length of the first control error interval; and transmitting the first data packet to the wireless power receiver. ## Claims ### Claim 1 A method of transmitting data by a wireless power transmitter in a wireless power transmission system, the method comprising: receiving, from a wireless power receiver within a first control error interval, a first control error packet including a control error value for power transmitted from the wireless power transmitter; determining a size of a first data packet, based on a length of the first control error interval; and transmitting the first data packet to the wireless power receiver. ### Claim 2 (depends on 1) The method of claim 1, wherein the size of the first data packet is determined based on a size of a data packet received from the wireless power transmitter before the first control error packet is received. ### Claim 3 (depends on 1) The method of claim 1, wherein the size of the first data packet varies depending on the length of the first control error interval. ### Claim 4 (depends on 1) The method of claim 1, after the receiving, further comprising receiving a second data packet from the wireless power receiver within the first control error interval, wherein the size of the first data packet is determined based on a size of the first control error packet and a size of the second data packet. ### Claim 5 (depends on 4) The method of claim 4, wherein the first data packet is an auxiliary data transport (ADT) data packet, and the second data packet is a data stream response (DSR) data packet. ### Claim 6 (depends on 1) The method of claim 1, after the receiving, further comprising: changing a length of a second control error interval, based on at least one of the control error value and the length of the first control error interval; and transmitting a second data packet including information on the second control error interval to the wireless power receiver. ### Claim 7 (depends on 6) The method of claim 6, wherein the changing further comprises increasing the length of the second control error interval based on that the control error value is within a pre-set range. ### Claim 8 (depends on 6) The method of claim 6, wherein the changing further comprises decreasing the length of the second control error interval based on that the control error value is out of a pre-set range. ### Claim 9 (depends on 1) The method of claim 1, after the transmitting, further comprising: receiving a response packet for the first data packet from the wireless power receiver within a second control error interval; adjusting a size of a third data packet, based on the response packet; and transmitting the third data packet to the wireless power receiver. ### Claim 10 A method of transmitting data by a wireless power receiver in a wireless power transmission system, the method comprising: transmitting, to a wireless power transmitter within a first control error interval, a first control error packet including a control error value for power transmitted from the wireless power transmitter; determining a size of a first data packet, based on a length of the first control error interval; and transmitting the first data packet within the first control error interval to the wireless power transmitter. ### Claim 11 (depends on 10) The method of claim 10, wherein the size of the first data packet varies depending on the length of the first control error interval. ### Claim 12 (depends on 10) The method of claim 10, before the determining, further comprising: determining the length of the first control error interval, based on the control error value; and transmitting to the wireless power transmitter a second data packet including information on the first control error interval. ### Claim 13 (depends on 12) The method of claim 12, wherein the changing further comprises increasing the length of the first control error interval based on that the control error value is within a pre-set range. ### Claim 14 (depends on 12) The method of claim 12, wherein the changing further comprises decreasing the length of the first control error interval based on that the control error value is out of a pre-set range. ### Claim 15 (depends on 12) The method of claim 12, wherein at least one of the first data packet and the second data packet is an auxiliary data transport (ADT) data packet.