# US 2016/0366540 A1 · Communication circuit, communication apparatus, communication method and computer program > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0366540 A1 - Document ID: US20160366540A1 - Status: Published application - Kind: A1 - Application number: 15/121,255 - Filed: 2015-02-23 - Published: 2016-12-15 - Earliest claimed: 2014-03-14 - Assignees: Sony Corporation - Applicants: Sony Corporation - Inventors: Katsuyuki TERUYAMA - Web page: https://patentgrep.com/patent/US20160366540A1 ## CPC - H04W 4/20: Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel - H04B 5/26: using coils - H04L 67/12: specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks - H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication - H04B 5/45: Transponders - H04W 76/14: Direct-mode setup - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract There is provided a communication circuit through which it is possible to acquire information about a service available in an active communication mode and a passive communication mode if a connection of near field wireless communication is established in the active communication mode, the communication circuit configured to have an active communication mode and a passive communication mode that are provided as communication modes of near field wireless communication, and configured to, when a connection of the near field wireless communication is established in the active communication mode with another device, receive information about a service that uses the passive communication mode from the other device. ## Claims ### Claim 1 A communication circuit configured to have an active communication mode and a passive communication mode that are provided as communication modes of near field wireless communication, and configured to, when a connection of the near field wireless communication is established in the active communication mode with another device, receive information about a service that uses the passive communication mode from the other device. ### Claim 2 (depends on 1) The communication circuit according to claim 1, wherein, when it is determined that the service that uses the passive communication mode is used from among services received from the other device, the connection established in the active communication mode with the other device is released, and a connection of the near field wireless communication with the other device is established in the passive communication mode. ### Claim 3 (depends on 1) The communication circuit according to claim 1, wherein the information about the service is protocol information about a protocol that the service uses. ### Claim 4 (depends on 3) The communication circuit according to claim 3, wherein service information for identifying a service is further received from the other device through the near field wireless communication by using a protocol different from the protocol according to which the protocol information is received. ### Claim 5 (depends on 3) The communication circuit according to claim 3, wherein information enabling a service corresponding to a protocol selected based on the received protocol information to be selected by the other device is transmitted through the near field wireless communication. ### Claim 6 (depends on 1) The communication circuit according to claim 1, wherein the information about the service includes protocol information for identifying a protocol that the service uses and service information for identifying a service. ### Claim 7 (depends on 1) The communication circuit according to claim 1, wherein, when the information about the service that uses the passive communication mode used in the other device is received from the other device through the near field wireless communication, information including the information about the service that uses the passive communication mode in an own device is transmitted to the other device through the near field wireless communication. ### Claim 8 (depends on 7) The communication circuit according to claim 7, wherein the information about the service is protocol information about a protocol that the service uses. ### Claim 9 (depends on 8) The communication circuit according to claim 8, wherein, when information for selecting a service available using a protocol selected from the protocol information is received from the other device, the communication circuit selects a service to be used and responds to the other device through near field wireless communication. ### Claim 10 (depends on 8) The communication circuit according to claim 8, wherein service information for identifying a service is further transmitted to the other device through the near field wireless communication by using a protocol different from the protocol according to which the protocol information is received. ### Claim 11 A communication apparatus comprising: a communication circuit configured to have an active communication mode and a passive communication mode that are provided as communication modes of near field wireless communication, and configured to, when a connection of the near field wireless communication is established in the active communication mode with another device, receive information about a service that uses the passive communication mode from the other device; and a control unit capable of performing communication with the communication circuit. ### Claim 12 (depends on 11) The communication apparatus according to claim 11, further comprising an antenna that is connected to the communication circuit and performs the near field wireless communication. ### Claim 13 A communication method comprising, when an active communication mode and a passive communication mode are provided as communication modes of near field wireless communication and a connection of the near field wireless communication is established in the active communication mode with another device, receiving information about a service that uses the passive communication mode from the other device. ### Claim 14 A computer program causing a computer to execute, when an active communication mode and a passive communication mode are provided as communication modes of near field wireless communication and a connection of the near field wireless communication is established in the active communication mode with another device, receiving information about a service that uses the passive communication mode from the other device.