# US 10,313,028 B2 · Human body communication device, human body communication method, and program > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,313,028 B2 - Document ID: US10313028B2 - Status: Granted - Kind: B2 - Application number: 15/278,641 - Filed: 2016-09-28 - Published: 2017-04-27 - Granted: 2019-06-04 - Earliest claimed: 2015-10-22 - Assignees: Sony Corporation - Applicants: Sony Mobile Communications Inc. - Inventors: Yoshihito Ishibashi - Web page: https://patentgrep.com/patent/US10313028B2 ## CPC - H04B 13/005: {Transmission systems in which the medium consists of the human body} - H04B 5/22: Capacitive coupling - H04B: TRANSMISSION ## Abstract There is provided a human body communication device including a control unit configured to adjust a communication strength on the basis of information relevant to a process using human body communication. ## Claims ### Claim 1 A human body communication device comprising: a control circuitry configured to receive a notification from a first communication device, the notification indicating a security level of a process performed between the human body communication device and the first communication device using human body communication; adjust a communication strength of the human body communication from an original state based on the security level of the process indicated by the notification; after the communication strength is adjusted, perform a mutual authentication with the first communication device, and establish a session for the human body communication with the first communication device; after the session is established, perform the process between the human body communication device and the first communication device using the human body communication using the adjusted communication strength; and after performing the process, readjust the communication strength to the original state. ### Claim 2 (depends on 1) The human body communication device according to claim 1, wherein when the security level is higher than a predetermined threshold value, the control circuitry is configured to make the communication strength lower than a predetermined strength. ### Claim 3 (depends on 1) The human body communication device according to claim 1, wherein the control circuitry is configured to adjust the communication strength on the basis of a process for a connection with the first communication device. ### Claim 4 (depends on 3) The human body communication device according to claim 3, wherein the control circuitry is configured to adjust the communication strength, depending on whether or not communication connection with the first communication device is established. ### Claim 5 (depends on 1) The human body communication device according to claim 1, wherein the control circuitry is configured to adjust the communication strength depending on a type of the first communication device. ### Claim 6 (depends on 1) The human body communication device according to claim 1, wherein when the communication strength is adjusted by the control circuitry, the control circuitry is configured to readjust the communication strength after a predetermined time has elapsed from the adjustment of the communication strength. ### Claim 7 (depends on 1) The human body communication device according to claim 1, wherein when the communication strength is adjusted by the control circuitry, the control circuitry is configured to readjust the communication strength after the process ends. ### Claim 8 (depends on 1) The human body communication device according to claim 1, wherein when the communication strength is adjusted by the control circuitry, the control circuitry is configured to readjust the communication strength after another notification is sent from the first communication device. ### Claim 9 (depends on 1) The human body communication device according to claim 1, wherein the control circuitry is configured to adjust the communication strength in accordance with a consumption state of electric power of the human body communication device. ### Claim 10 (depends on 1) The human body communication device according to claim 1, wherein the process includes at least one of a process of payment and a process of personal information. ### Claim 11 (depends on 1) The human body communication device according to claim 1, wherein the communication strength includes at least one of a transmission strength and a reception strength. ### Claim 12 (depends on 1) The human body communication device according to claim 1, wherein the control circuitry is configured to receive a beacon from the first communication device; and transmit a response signal to the first communication device in response to receiving the beacon, and the first communication device transmits the notification in response to receiving the response signal from the human body communication device. ### Claim 13 A human body communication method comprising: receiving a notification from a first communication device, the notification indicating a security level of a process performed between the human body communication device and the first communication device using human body communication; adjusting, by a processor, a communication strength of the human body communication from an original state based on the security level of the process indicated by the notification; after the communication strength is adjusted, performing, by the processor, a mutual authentication with the first communication device, and establish a session for the human body communication with the first communication device; after the session is established, performing, by the processor, the process between the human body communication device and the first communication device using the human body communication using the adjusted communication strength; and after performing the process, readjusting, by the processor, the communication strength to the original state. ### Claim 14 A non-transitory, computer-readable medium storing a program for causing a computer to receive a notification from a first communication device, the notification indicating a security level of a process performed between the human body communication device and the first communication device using human body communication; adjust a communication strength of the human body communication from an original state based on the security level of the process indicated by the notification; after the communication strength is adjusted, perform a mutual authentication with the first communication device, and establish a session for the human body communication with the first communication device; after the session is established, perform the process between the human body communication device and the first communication device using the human body communication using the adjusted communication strength; and after performing the process, readjust the communication strength to the original state.