Abstract: A communication terminal includes circuitry. The circuitry receives data of a whole image, data of a material image, and superimposition position information indicating a position where the material image is to be superimposed on the whole image, the data of the whole image, the data of the material image, and the superimposition position information being transmitted from another communication terminal. The circuitry superimposes the material image on the whole image at the position indicated by the superimposition position information. The circuitry causes a display to display a predetermined-area image, which is an image of a predetermined area of the whole image. When at least a part of the material image being superimposed is not displayed in the predetermined-area image, the circuitry changes the position where the material image is superimposed such that the material image is displayed at a predetermined position in the predetermined-area image.

Abstract: A communication terminal includes a memory, a receiver, and circuitry. The memory stores image data identification information identifying image data in association with image type information indicating a type of an image represented by the image data. The receiver receives specific image data and specific image data identification information identifying the specific image data from another communication terminal. The circuitry controls a display to display a specific image represented by the specific image data received by the receiver in a size according to the image type information associated with the specific image identification information in the memory.

Abstract: An image communication system includes a first communication terminal including first circuitry and a second communication terminal including second circuitry. The first circuitry of the first communication terminal transmits, to the second communication terminal, first image data representing a first image and second image data representing a second image. The first circuitry of the first communication terminal transmits, to the second communication terminal, position information indicating a predetermined position on the first image. The second circuitry of the second communication terminal combines, based on the position information, the second image with the first image at the predetermined position on the first image to generate a combined image. The second circuitry of the second communication terminal displays, on a display, the combined image.

Abstract: A communication terminal is provided that is configured to display a first image of a first predetermined area is a whole image shared with another communication terminal. The communication terminal includes processing circuitry configured to receive predetermined area information indicating the second predetermined area transmitted by another communication terminal displaying the second predetermined area image of the second predetermined area in the whole image; and control displaying of the second predetermined area image indicated by the received predetermined area information based on an operation status with respect to the first predetermined area image when the predetermined area information is received.

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

Abstract: A communication management system relays communication between a first communication terminal that transmits data of a spherical image and a plurality of second communication terminals. The communication management system includes a memory and circuitry. The memory stores session identification information in association with addresses of communication terminals participating in the video communication session. The circuitry receives, from the first communication terminal, particular session identification information identifying a particular video communication session, and a display control parameter for limiting a display area of the spherical image to be displayed by each of the plurality of second communication terminals in the particular video communication session to a part of an entire area of the spherical image.

Abstract: A communication terminal includes circuitry. The circuitry receives data of a whole image, data of a material image, and superimposition position information indicating a position where the material image is to be superimposed on the whole image, the data of the whole image, the data of the material image, and the superimposition position information being transmitted from another communication terminal. The circuitry superimposes the material image on the whole image at the position indicated by the superimposition position information. The circuitry causes a display to display a predetermined-area image, which is an image of a predetermined area of the whole image. When at least a part of the material image being superimposed is not displayed in the predetermined-area image, the circuitry changes the position where the material image is superimposed such that the material image is displayed at a predetermined position in the predetermined-area image.

Abstract: A communication terminal that receives at least one of image data and audio data from at least one other communication terminal via a network, the communication terminal including circuitry to generate log data in response to occurrence of an event at the communication terminal, and transmit the generated log data to an accumulation apparatus each time the event occurs.

Abstract: A communication terminal for displaying a predetermined-area image, which is an image of a part of a whole image, includes circuitry. The circuitry receives first predetermined information specifying a first predetermined area, the first predetermined information being transmitted from another communication terminal displaying a first predetermined-area image, which is an image of the first predetermined-area. The circuitry calculates a position of the first predetermined area with respect to a second predetermined area, based on the first predetermined information received and second predetermined information specifying the second predetermined area, the second predetermined area being an area of a second predetermined-area image being displayed by the communication terminal.

Abstract: An image data communication system includes: a first communication terminal including first circuitry; and a second communication terminal including second circuitry. The first circuitry of the first communication terminal is configured to transmit a plurality of pieces of image data and layer display order information indicating a layer display order in which a plurality of images represented by the plurality of pieces of image data are to be displayed. The second circuitry of the second communication terminal is configured to display the plurality of images represented by the plurality of pieces of image data transmitted from the first communication terminal in the layer display order based on the layer display order information transmitted from the first communication terminal.

Abstract: A VR system includes an image capturing device, a communication terminal, a communication management system, and a VR terminal. The communication terminal is configured to input position information of the image capturing device, and transmit, to the communication management system, the position information of the image capturing device and image identification. The communication management system is configured to receive the position information of the image capturing device and the image identification information, and transmit, to the VR terminal, the position information and the image identification information.

Abstract: A communication control device is configured to control data communication between terminals using a communication network. The communication control device include: a status-information acquiring unit configured to acquire respective pieces of status information which represent operating states of the terminals; a reception-information acquiring unit configured to acquire respective pieces of reception information which represent states of the communication network when the terminals have received data; a communication determining unit configured to determine a type of communication on the basis of a combination of pieces of status information of multiple terminals that participate in the same communication; and a quality control unit configured to control quality of data that each terminal transmits or receives on the basis of the determined type of communication and the acquired reception information.

Abstract: A communication terminal for displaying a predetermined-area image includes circuitry. The circuitry receives first predetermined-area information indicating a first predetermined area, the first predetermined-area information being transmitted from another communication terminal displaying a first predetermined-area image. The circuitry calculates a direction of the first predetermined area with respect to a second predetermined area in a whole image, based on the first predetermined-area information and second predetermined-area information. The second predetermined area is an area of a second predetermined-area image being displayed by the communication terminal. The circuitry controls a display to display the second predetermined-area image including display direction information indicating the calculated direction. The circuitry accepts designation of the display direction information.

Abstract: A communication terminal for displaying a predetermined-area image, which is an image of a part of a whole image, includes circuitry. The circuitry receives first predetermined information specifying a first predetermined area, the first predetermined information being transmitted from another communication terminal displaying a first predetermined-area image, which is an image of the first predetermined-area. The circuitry calculates a position of the first predetermined area with respect to a second predetermined area, based on the first predetermined information received and second predetermined information specifying the second predetermined area, the second predetermined area being an area of a second predetermined-area image being displayed by the communication terminal.

Abstract: A communication terminal includes circuitry. The circuitry receives data of a whole image, data of a material image, and superimposition position information indicating a position where the material image is to be superimposed on the whole image, the data of the whole image, the data of the material image, and the superimposition position information being transmitted from another communication terminal. The circuitry superimposes the material image on the whole image at the position indicated by the superimposition position information. The circuitry causes a display to display a predetermined-area image, which is an image of a predetermined area of the whole image. When at least a part of the material image being superimposed is not displayed in the predetermined-area image, the circuitry changes the position where the material image is superimposed such that the material image is displayed at a predetermined position in the predetermined-area image.

Abstract: A VR system includes an image capturing device, a communication terminal, a communication management system, and a VR terminal. The communication terminal is configured to input position information of the image capturing device, and transmit, to the communication management system, the position information of the image capturing device and image identification. The communication management system is configured to receive the position information of the image capturing device and the image identification information, and transmit, to the VR terminal, the position information and the image identification information.

Abstract: A communication management system relays communication between a first communication terminal that transmits data of a spherical image and a plurality of second communication terminals. The communication management system includes a memory and circuitry. The memory stores session identification information in association with addresses of communication terminals participating in the video communication session. The circuitry receives, from the first communication terminal, particular session identification information identifying a particular video communication session, and a display control parameter for limiting a display area of the spherical image to be displayed by each of the plurality of second communication terminals in the particular video communication session to a part of an entire area of the spherical image.

Abstract: An image communication system includes a first communication terminal including first circuitry and a second communication terminal including second circuitry. The first circuitry of the first communication terminal transmits, to the second communication terminal, first image data representing a first image and second image data representing a second image. The first circuitry of the first communication terminal transmits, to the second communication terminal, position information indicating a predetermined position on the first image. The second circuitry of the second communication terminal combines, based on the position information, the second image with the first image at the predetermined position on the first image to generate a combined image. The second circuitry of the second communication terminal displays, on a display, the combined image.

Abstract: A communication terminal includes circuitry to cause a display to display a predetermined area image. The predetermined area image is an image of a part of a whole image that is shared with another communication terminal communicably connected to the communication terminal. The circuitry further transmits predetermined area information to be received by the other communication terminal. The predetermined area information indicates a predetermined area associated with the predetermined area image displayed with the display.

Abstract: A communication management apparatus includes a receiver to receive image type information indicating a type of an image from a first communication terminal; circuitry to generate image data identification information for identifying image data to be transmitted from the first communication terminal to a second communication terminal, based on reception of the image type information; and a transmitter to transmit the image data identification information that is generated to the first communication terminal, and transmit the image data identification information that is generated and the image type information that is received to the second communication terminal.