Abstract: A communication management system, a communication system, a communication control method, and a recording medium.

Abstract: A communication terminal includes circuitry to: transmit a participation request for requesting participation in a remote conference being conducted between one or more other communication terminals, to a communication management apparatus that manages data being shared between the other communication terminals; receive screen data of a display screen being currently displayed at the other communication terminals from the communication management apparatus, the screen data of the display screen being one of a plurality of items of screen data generated at at least one of the other communication terminals in the remote conference; and control a display to display the display screen based on the screen data that is received.

Abstract: A communication terminal includes circuitry that receives, from a communication management apparatus, an operation restriction notification for restricting an operation on a display image to be displayed on a display. The communication management apparatus controls communication between the communication terminal and another communication terminal that shares data of the display image with the communication terminal. In response to receipt of the operation during an operation restriction period in which the operation on the display image is restricted, the circuity controls the display to display a plurality of options as to whether to reflect the received operation in the display image.

Abstract: A communication management system, a communication system, a communication control method, and a recording medium.

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 communication management system manages a session in which a plurality of terminal apparatuses shares a stroke image. The communication management system includes circuitry configured to: manage stroke information including a plurality of pieces of stroke data representing the stroke image; receive, from a first terminal apparatus, group operation information for designating one or more pieces of stroke data, which are operation targets, from among the plurality of pieces of stroke data; and restrict, based on the group operation information, an operation regarding the one or more pieces of stroke data by a second terminal apparatus, which is different from the first terminal apparatus.

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 screen sharing system is configured to perform screen sharing between a first information processing apparatus and a second information processing apparatus. The first information processing apparatus is configured to acquire, as screen-sharing information, an image displayed on the first information processing apparatus, and transmit the screen-sharing information to a first server, when a data amount of the screen-sharing information is below a threshold value, and transmit the screen-sharing information to a second server and transmit, to the first server, storage destination information indicating a storage destination of the screen-sharing information, when the data is greater than or equal to the threshold value.

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 communication management system, a communication system, a communication control method, and a recording medium.

Abstract: A management system includes a transmission/reception unit configured to receive transmission terminal identification information of a plurality of transmission terminals used for transmitting/receiving content data, a relay device extracting unit configured to specify relay device identification information of a relay device that can be used to be common to the plurality of transmission terminals among the relay device identification information managed by a relay device selection managing unit based on the received transmission terminal identification information, and a selection unit configured to select a relay device based on relay device identification information for which acceptability/unacceptability information managed by the relay device managing unit represents being acceptable among specified relay device identification information as a relay device relaying transmission/reception of the content data.

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 for managing at least one function to be executed in a communication terminal. The management system includes a reception unit that receives identification information about the communication terminal from the communication terminal; a storage unit that stores a service period set for each of functions associated with pieces of identification information about communication terminals; a specification unit that specifies, from the functions associated with the received identification information, functions within the service periods; and a transmission unit that transmits function information indicating the specified functions to the communication terminal.

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 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 control system includes a plurality of control apparatuses each capable of controlling a first communication terminal connected to the control apparatus. Each control apparatus transmits search information including terminal identification information for identifying a second communication terminal to other control apparatuses of the plurality of control apparatuses, searches for one of the other control apparatuses that is connected to the second communication terminal based on responses that are transmitted from the other control apparatuses in response to the search information, and transmits state information indicating a state of the first communication terminal connected to the control apparatus to the searched control apparatus connected to the second communication terminal.

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 communications system includes communications terminals connected to a management 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.