Abstract: A communication terminal includes circuitry configured to receive, from another communication terminal, a wide-field-of-view image; display a particular area image corresponding to a particular area of the wide-field-of-view image; and display an icon, corresponding to a non-verbal communication of a person, at a position in the particular area image in a case that the non-verbal communication is detected in an area of the wide-field-of-view image outside of the particular area.

Abstract: A system of controlling display includes a display, and circuitry that controls the display to display a screen including a predetermined-area image representing a viewable area of a wide-view image. In response to detection of a first operation on the predetermined-area image, the circuitry performs first processing of displaying another predetermined-area image representing another viewable area of the wide-view image, said another viewable area reflecting a change in virtual viewpoint to the wide-view image. In response to detection of a second operation on the predetermined-area image, the second operation being different than the first operation, the circuitry performs second processing of scrolling the predetermined-area image in the screen.

Abstract: A communication terminal includes circuitry that: stores first position information of an image capturing apparatus in a memory, the first position information indicating a position of the image capturing apparatus when installed in a first time period; receives a wide-view image captured by the image capturing apparatus in a second time period and second position information of the image capturing apparatus via a network, the second position information indicating a position of the image capturing apparatus when installed in the second time period; corrects the wide-view image captured in the second time period, based on a difference between the first position information and the second position information; and causes a display to display the corrected wide-view image.

Abstract: A display terminal for playing back a predetermined area of a wide-view image that is recorded, includes: a display to display a first display area and a second display area, the first display area being related to a first recording duration in which a speech is made when a first predetermined area of the wide-view image is being displayed by a first display terminal, the second display area being related to a second recording duration in which a speech is made when a second predetermined area of the wide-view image is being displayed by the first display terminal; and circuitry that receives selection of the second display area during display of a first predetermined-area image, and controls the display to display a second predetermined-area image in response to receipt of selection of the second display area.

Abstract: A display terminal comprising circuitry that displays a first predetermined-area image on a display screen, the first predetermined-area image representing a predetermined area in a first wide-view image having been captured at a given location on a first date and time; and displays a second predetermined-area image on the display screen, the second predetermined-area image being related to the predetermined area in a second wide-view image, the second wide-view image having captured at the given location on a second date and time different from the first date and time.

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.