Abstract: A communication management apparatus includes circuitry that manages first communication in which a terminal apparatus transmits content data to another terminal apparatus via a relay apparatus. The circuitry receives, from the terminal apparatus, a determination of whether the terminal apparatus is communicable with the another terminal apparatus through second communication that bypasses the relay apparatus. Based on a determination that the terminal apparatus is communicable with the another terminal apparatus through the second communication, the circuitry restricts a communication bandwidth for the first communication of the another terminal apparatus determined to be communicable with the terminal apparatus through the second communication.

Abstract: A communication management apparatus includes circuitry that manages first communication in which a terminal apparatus transmits content data to another terminal apparatus via a relay apparatus. The circuitry receives, from the terminal apparatus, a determination of whether the terminal apparatus is communicable with the another terminal apparatus through second communication that bypasses the relay apparatus. Based on a determination that the terminal apparatus is communicable with the another terminal apparatus through the second communication, the circuitry restricts a communication bandwidth for the first communication of the another terminal apparatus determined to be communicable with the terminal apparatus through the second communication.

Abstract: A communication terminal includes circuitry configured to: perform first transmission of connection request information indicating a connection request to a first explainer terminal that preferentially responds to the connection request from the communication terminal provided in an unmanned store; and receive response information indicating a response of connection availability from the first explainer terminal.

Abstract: A communication system includes a first communication terminal and a second communication terminal. The first communication terminal includes first circuitry to display, on a first display, a first screen including information. The second communication terminal includes second circuitry to display, on a second display, a second screen including the information, which is same as the first screen. The first screen and the second screen are different from each other in accepting operations performed with respect to the displayed information.

Abstract: A distribution system includes circuitry to: encrypt a part of each of a plurality of images constituting a video image, the part having an angle of view other than a normal angle of view; provide a decryption key to a receiving client terminal operated by an authorized viewer; decrypt the part of each of the plurality of images having the angle of view other than the normal angle of view by using the decryption key provided; and display the video image based on other part of each of the plurality of images that is not encrypted having the normal angle of view and the decrypted part of each of the plurality of images having the angle of view other than the normal angle of view.

Abstract: A communication terminal includes circuitry configured to: perform first transmission of connection request information indicating a connection request to a first explainer terminal that preferentially responds to the connection request from the communication terminal provided in an unmanned store; and receive response information indicating a response of connection availability from the first explainer terminal.

Abstract: A communication terminal includes circuitry configured to: start a download of a plurality of stroke data items corresponding to a plurality of stroke images drawn at another communication terminal from a communication management system; receive capture image data obtained by capturing a display screen displayed at the another communication terminal by the another communication terminal, from an image storage device that stores the capture image data; when the download of the plurality of stroke data items is not completed, control a display of the communication terminal to display a capture image corresponding to the received capture image data; and when the download of the plurality of stroke data items is completed, control the display to switch an image to be displayed on the display from the capture image currently being displayed to the plurality of stroke images corresponding to the downloaded plurality of stroke data items.

Abstract: A conference system includes a management system connected via a network to a first communication terminal and a second communication terminal. The management system includes a processing circuitry configured to implement a generation unit configured to generate a topic in response to a conference topic issuance request made by a first user to hold a conference between the first communication terminal and the second communication terminal; and an authorization unit configured to authorize the first user to perform publication and subscription for the topic in response to the conference topic issuance request made by the first user, and to authorize a second user to perform publication and subscription for the topic in response to an invitation request made by the first user to invite the second user to the conference, the invitation request including a topic name indicating a message for the second user.

Abstract: A management system, a communication system, and a management method. The management system and the management method include receiving a request to associate identification information of a first user with identification information of a first client application that the first user is authorized to use, and identification information of a second user who has been authenticated and has been authorized to use a second client application, determining whether the identification information of the second user matches certain information that corresponds to the first client application, and associating the identification information of the first user with the identification information of the first client application when the determining determines that the identification information of the second user matches the certain information that corresponds to the first client application.

Abstract: A disclosed control system configured to control transmission of content data between communication terminals includes one or more processors, and a memory storing instructions that, when executed by the one or more processors, cause the control system to receive a transmission request including attribute information indicating an attribute of the content data for transmitting the content data from a first communication terminal, and perform control for transmitting the content data to a second communication terminal specified based on the destination information in response to the attribute information being in a predetermined format, the predetermined format including destination information indicating a destination of the content data and to perform control for transmitting the content data to a third communication terminal that has requested reception of the content data having the attribute indicated by the attribute information in response to the attribute information not being in the predetermined form

Abstract: A distribution system includes circuitry to: encrypt a part of each of a plurality of images constituting a video image, the part having an angle of view other than a normal angle of view; provide a decryption key to a receiving client terminal operated by an authorized viewer; decrypt the part of each of the plurality of images having the angle of view other than the normal angle of view by using the decryption key provided; and display the video image based on other part of each of the plurality of images that is not encrypted having the normal angle of view and the decrypted part of each of the plurality of images having the angle of view other than the normal angle of view.

Abstract: A management system, a method of controlling communication, and a communication system. The management system and method includes receiving a request to distribute information related to a prescribed attribute from a first communication terminal that is authenticated by a first client, receiving a request to receive a message related to the prescribed attribute from a second communication terminal that is authenticated by a second client, and controlling distribution of the information related to the prescribed attribute to the second communication terminal based on whether a first service that is used by the first client and a second service that is used by the second client are each associated with the prescribed attribute. The communication system includes a first communication terminal executing a first application, a second communication terminal executing a second application, and a management system to communicate with the first communication terminal and the second communication terminal.

Abstract: A management system includes a reception unit configured to receive identification information for identifying an account, allocated by an authentication apparatus, corresponding to a terminal, the terminal being authenticated by the authentication apparatus, and a management unit configured to determine whether a function provided by the management system can be used by the terminal based on the identification information received by the reception unit.

Abstract: A communication system includes a first device at a first site and a second device at a second site communicating with each other. The first device includes a communication start unit to start communication with the second device, a connection information obtainment unit to obtain connection information from another device at the first site connected with the first device by wire or wirelessly, for another device at the second site to connect with the other device at the first site, and a transmitter unit to transmit the connection information to the second device. The second device includes a receiver unit to receive the connection information from the first device, and another device communication unit to transmit the connection information received by the receiver unit, to the other device at the second site connected with the second device by wire or wirelessly.

Abstract: A control apparatus includes at least one processor configured to receive a request from a first communications terminal from among a plurality of communications terminals to select one or more relay apparatuses that relay content data transmitted and received between the first communications terminal and a second communications terminal from among the communications terminals; select one or more relay apparatuses included in one or more networks usable by the first communications terminal and the second communications terminal in response to the received request; and transmit identification information of the selected one or more relay apparatuses to the first communications terminal.

Abstract: A communication management system stores session identification information for identifying one or more communication sessions for providing the service, and use state information indicating whether each one of the communication sessions is being used. In response to receiving from a first communication terminal a request for starting communication including first service identification information for identifying a first service, the management system transmits to the first communication terminal a session identification information of one of the communication sessions having the use state information indicating that the communication session is not being used based on determination.

Abstract: A transmission management system for managing a session transmitting content data via a relay apparatus, includes a service management unit configured to manage service management information including service identification information identifying service content to be provided to each of transmission terminals, and service content corresponding to the service identification information; a first acquisition unit configured to acquire the service identification information for the transmission terminal participating in the session; a second acquisition unit configured to acquire terminal capacity information indicating service content available for the transmission terminal; an extraction unit configured to extract the service content available for the transmission terminal, based on service content corresponding to the acquired service identification information and service content corresponding to the acquired terminal capacity information; and a determination unit configured to determine service content of

Abstract: A communication terminal, a communication system and an output method. The communication terminal and the output method include storing, in a memory, a plurality of communication applications including a first communication application and a second communication application, outputting first status information indicating a first status of the first communication application according to a call control information transmitted by the first communication application, and outputting second status information indicating a second status of the second communication application according to a resource that is used by the first communication application in the first status. The communication system includes a publish-subscribe server and the communication terminal, and the communication terminal further includes sending a pub request to publish the call control information and a sub request to subscribe to the call control information to the publish-subscribe server.

Abstract: A conference system includes a management system connected via a network to a first communication terminal and a second communication terminal. The management system includes a processing circuitry configured to implement a generation unit configured to generate a topic in response to a conference topic issuance request made by a first user to hold a conference between the first communication terminal and the second communication terminal; and an authorization unit configured to authorize the first user to perform publication and subscription for the topic in response to the conference topic issuance request made by the first user, and to authorize a second user to perform publication and subscription for the topic in response to an invitation request made by the first user to invite the second user to the conference, the invitation request including a topic name indicating a message for the second user.

Abstract: A communication terminal and a method of transmitting data. The communication terminal and the method includes transmitting, at a prescribed timing, first information from the communication terminal to a management system that manages communication between the communication terminal and a counterpart communication terminal, and transmitting from the communication terminal to the management system second information to be sent from the management system to the counterpart communication terminal connected to the management system through a network, when the management system does not receive the first information transmitted from the communication terminal for a prescribed length of time. The second information includes status information of each of a plurality of communication applications that operate in the communication terminal.