# US 10,122,770 B2 · Communication terminal, communication system, communication method, and recording medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,122,770 B2 - Document ID: US10122770B2 - Status: Granted - Kind: B2 - Application number: 15/151,991 - Filed: 2016-05-11 - Published: 2016-12-01 - Granted: 2018-11-06 - Earliest claimed: 2015-05-29 - Assignees: Ricoh Company, Ltd. - Applicants: Ricoh Company, Ltd. - Inventors: Yoshinaga Kato - Web page: https://patentgrep.com/patent/US10122770B2 ## CPC - H04L 65/752: adapting media to network capabilities - H04L 63/083: {using passwords (cryptographic mechanisms or cryptographic arrangements for entity authentication using a predetermined code H04L9/3226)} - H04L 63/0876: {based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint} - H04L 63/102: {Entity profiles} - H04L 63/123: {received data contents, e.g. message integrity} - H04L 65/765: {intermediate} - H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication - H04L 65/403: Arrangements for multi-party communication, e.g. for conferences (data switching systems for conference H04L12/18; arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities H04M3/56; television conferencing systems H04N7/15) - H04L 2101/365: Application layer names, e.g. buddy names, unstructured names chosen by a user or home appliance name - H04L 2101/37: E-mail addresses - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A communication terminal receives, from a mobile terminal, counterpart terminal identification information for identifying a counterpart communication terminal that the communication terminal is to start communication, and determines a communication application to be used by the counterpart communication terminal based on the received counterpart terminal identification information. When the determined communication application is a first communication application, the communication terminal identifies, as the counterpart communication terminal, a first counterpart communication terminal that uses the first communication application. When the determined communication application is a second communication application, the communication terminal identifies, as the counterpart communication terminal, a second counterpart communication terminal that uses the second communication application. The communication terminal further transmits a communication start request to the identified counterpart communication terminal that uses the determined communication application, to start communication with the identified counterpart communication terminal through the determined communication application. ## Claims ### Claim 1 A communication terminal configured to communicate with a counterpart communication terminal, the communication terminal comprising: a receiver to receive, from a mobile terminal, counterpart terminal identification information for identifying a counterpart communication terminal that the communication terminal is to start communication, the mobile terminal being a mobile terminal that has obtained the counterpart terminal identification information from the counterpart communication terminal; circuitry to determine a communication application to be used by the counterpart communication terminal in communication with the communication terminal, based on the received counterpart terminal identification information, wherein, when the determined communication application is a first communication application, the circuitry identifies, as the counterpart communication terminal, a first counterpart communication terminal that uses the first communication application, and when the determined communication application is a second communication application, the circuitry identifies, as the counterpart communication terminal, a second counterpart communication terminal that uses the second communication application; and a transmitter to transmit a communication start request to the identified counterpart communication terminal that uses the determined communication application, to start communication with the identified counterpart communication terminal through the determined communication application. ### Claim 2 (depends on 1) The communication terminal of claim 1, further comprising: a memory to store a plurality of communication applications that are differ in a format of counterpart communication terminal identification information to be used, the plurality of types of communication application including at least the first communication application and the second communication application. ### Claim 3 (depends on 1) The communication terminal of claim 1, wherein, when the determined communication application is the first communication application, the transmitter transmits the communication start request to the first counterpart communication terminal through a first communication network, and when the determined communication application is the second communication application, the transmitter transmits the communication start request to the second counterpart communication terminal through a second communication network. ### Claim 4 (depends on 3) The communication terminal of claim 3, wherein the first communication network is an intranet, and the second communication network is the Internet. ### Claim 5 (depends on 4) The communication terminal of claim 4, wherein the circuitry is further configured to determine whether the received terminal identification information is a terminal identification, select the second communication application based on determination indicating that the received terminal identification information is the terminal identification, and control the transmitter to transmit the communication start request to a communication management system managing an IP address of at least the counterpart communication terminal, the communication start request including a terminal identification of the communication terminal and a terminal identification of the second counterpart communication terminal. ### Claim 6 (depends on 4) The communication terminal of claim 4, wherein the circuitry is configured to determine whether the received terminal identification information is an Internet Protocol (IP) address, select the first communication application based on determination indicating that the received terminal identification information is the IP address, and control the transmitter to transmit the communication start request addressed to the IP address indicated by the received terminal identification information, through the first communication network. ### Claim 7 (depends on 6) The communication terminal of claim 6, wherein the circuitry is further configured to select the second communication application based on determination indicating that the received terminal identification information is not the IP address, and control the transmitter to transmit the communication start request to a communication management system managing an IP address of at least the counterpart communication terminal, the communication start request including a terminal identification information of the communication terminal and a terminal identification information of the second counterpart communication terminal. ### Claim 8 (depends on 7) The communication terminal of claim 7, wherein the terminal identification information of the second counterpart communication terminal includes one of 1) a terminal identification that is uniquely assigned to the second counterpart communication terminal, and 2) a user identification for identifying a user operating the second counterpart communication terminal, and wherein the communication management system obtains an IP address of the second counterpart communication terminal using one of the terminal identification and the user identification, and transmits the communication start request addressed to the obtained IP address. ### Claim 9 (depends on 1) The communication terminal of claim 1, wherein, when the determined communication application is the first communication application, the circuitry is further configured to display an authentication information input screen that requests a user to input authentication information of the first counterpart communication terminal, and transmit authentication information input by the user to the first counterpart communication terminal, to request authentication of the communication terminal by the first counterpart communication terminal. ### Claim 10 (depends on 1) The communication terminal of claim 1, wherein the receiver is configured to receive the terminal identification information for identifying the counterpart communication terminal from the mobile terminal by near-distance wireless communication. ### Claim 11 (depends on 10) The communication terminal of claim 10, wherein the near-distance wireless communication is based on near-field communication (NFC) or Bluetooth. ### Claim 12 A communication system comprising: a communication terminal including circuitry; and a plurality of counterpart communication terminals located at a site remote from a site where the communication terminal is located, the plurality of counterpart communication terminals including at least a first counterpart communication terminal being configured to use a first communication application and a second counterpart communication terminal being configured to use a second communication application, the communication terminal including the circuitry which is configured to: receive, from a mobile terminal, counterpart terminal identification information for identifying one of the plurality of counterpart communication terminals configured to start communication, the mobile terminal being a mobile terminal that has obtained the counterpart terminal identification information from the one of the plurality of counterpart communication terminals; determine a communication application to be used by the counterpart communication terminal to start communication, based on the received counterpart terminal identification information, wherein, when the determined communication application is the first communication application, the circuitry identifies, as the counterpart communication terminal to start communication, the first counterpart communication terminal that uses the first communication application, and when the determined communication application is the second communication application, the processors identify, as the counterpart communication terminal to start communication, the second counterpart communication terminal that uses the second communication application; and transmit a communication start request to the identified counterpart communication terminal that uses the determined communication application, to start communication with the identified counterpart communication terminal through the determined communication application. ### Claim 13 A method, implemented by a communication terminal, of communicating with a counterpart communication terminal, comprising: receiving, from a mobile terminal, counterpart terminal identification information for identifying a counterpart communication terminal that the communication terminal is to start communication, the mobile terminal being a mobile terminal that has obtained the counterpart terminal identification information from the counterpart communication terminal; determining a communication application to be used by the counterpart communication terminal in communication with the communication terminal, based on the received counterpart terminal identification information; identifying, as the counterpart communication terminal, 1) a first counterpart communication terminal that uses a first communication application when the determined communication application is the first communication application, and 2) a second counterpart communication terminal that uses a second communication application when the determined communication application is the second communication application; and transmitting a communication start request to the identified counterpart communication terminal that uses the determined communication application, to start communication with the identified counterpart communication terminal through the determined communication application. ### Claim 14 (depends on 13) The method of claim 13, further comprising: storing, in a memory, a plurality of communication applications that are different from each other in a format of counterpart communication terminal identification information to be used, the plurality of types of communication application including at least the first communication application and the second communication application. ### Claim 15 (depends on 13) The method of claim 13, further comprising: determining whether the received terminal identification information is an Internet Protocol (IP) address; selecting the first communication application based on determination indicating that the received terminal identification information is the IP address; and controlling to transmit the communication start request addressed to the IP address indicated by the received terminal identification information, through a first communication network. ### Claim 16 (depends on 15) The method of claim 15, further comprising: selecting the second communication application based on determination indicating that the received terminal identification information is not an IP address; and controlling to transmit the communication start request to a communication management system managing an IP address of at least the counterpart communication terminal, the communication start request including a terminal identification of the communication terminal and a terminal identification of the second counterpart communication terminal.