Abstract: A communication apparatus capable of multi-user communication in which signals are multiplexed and communicated to one or more other communication apparatuses, the communication apparatus determines whether to transmit an MU-RTS (Multi User Request To Send) frame based on a size of data scheduled to be transmitted or received in accordance with the multi-user communication, and, in a case where it is determined to transmit the MU-RTS frame, transmits the MU-RTS frame prior to the multi-user communication.

Abstract: A communication apparatus compatible with an IEEE 802.11ax standard that enables multi-user communication in which signals for one or more other communication apparatuses are multiplexed and transmitted, the communication apparatus determines, in a case where the multi-user communication is uplink communication, whether an incompatible apparatus exists around the communication apparatus, the incompatible apparatus being compatible with any of standards of an IEEE 802.11 series that precede the IEEE 802.11ax standard and incompatible with the IEEE802.11ax standard, and transmits, in a case where it is determined that the incompatible apparatus exists around the communication apparatus, an MU-RTS (Multi User Request To Send) frame before data communication through the multi-user communication.

Abstract: A communication apparatus includes: an acquisition unit configured to acquire media content; a generation unit configured to generate segments obtained by dividing the media content acquired by the acquisition unit by a predetermined division unit; a providing unit configured to provide another communication apparatus with a description file indicating a URL for acquisition of the segment already generated by the generation unit, and a URL for acquisition of a segment not yet generated by the generation unit; a receiving unit configured to receive, from the other communication apparatus, a request to specify a URL for acquisition indicated by the description file; and a transmitting unit configured to transmit, to the other communication apparatus, a segment corresponding to the URL for acquisition specified by the request of the other communication apparatus received by the receiving unit.

Abstract: A communication apparatus capable of communicating with another communication apparatus in a network conforming to NAN (Neighbor Awareness Networking), while joining a first NAN cluster included among a plurality of NAN clusters, detect an existence of a second NAN cluster included among the plurality of NAN clusters, compares an attribute value of the second NAN cluster with an attribute value of the first NAN cluster, and, when the attribute value of the second NAN cluster is lower than the attribute value of the first NAN cluster, transmits information indicating an existence of the first NAN cluster to the second NAN cluster.

Abstract: A communication apparatus includes a transmitting function and a receiving function for a radio signal, and, while belonging to a first group of devices, activates the transmitting and receiving functions to perform communication during a first period, and deactivates the transmitting and receiving functions outside the first period. The communication apparatus determines whether or not it performs monitoring for a presence of a second group of devices during a second period, controls performing of the monitoring by activating the receiving function during the second period when it is determined that the communication apparatus performs such monitoring, and keeping the transmission and receiving functions inactive outside the first period when it is determined that the communication apparatus does not perform such monitoring, and notifies another device in the first group of information related to the second group during the first period when a presence of the second group is detected.

Abstract: A communication apparatus is provided and is capable of selecting between a mode in which a service notification is issued in a single network (NW) and a mode in which a service notification is issued in a plurality of NWs selects which mode to issue a service notification based on a predetermined condition, and issues a service notification based on the selected mode.

Abstract: A communication apparatus is provided and is capable of selecting between a mode in which a service search is performed in a single network and a mode in which a service search is performed in a plurality of networks selects which mode to perform a service search in based on a predetermined condition, and performs a service search in the selected mode.

Abstract: A transmission apparatus includes an acquisition unit configured to acquire a list indicating segment data that is acquirable by a receiving apparatus from among a plurality of pieces of segment data obtained by dividing content data, a determination unit configured to determine according to the list, and a control unit configured to perform control to transmit the list at a first timing, if the determination unit determines that the list contains information about segment data that has not been transmitted to the receiving apparatus, and to perform control to transmit the list or a list acquired after the list has been acquired by the acquisition unit at a second timing, which is a timing later than the first timing, if the determination unit determines that the list does not contain information about segment data that has not been transmitted to the receiving apparatus.

Abstract: A communication apparatus includes an identifying unit configured to identify an object region having an object within a video image, a generating unit configured to generate a meta data segment including an identifier or identifiers of one or more objects corresponding to one or more object regions identified by the identifying unit, a transmitting unit configured to transmit the meta data segment generated by the generating unit to another communication apparatus, and a supplying unit configured to supply a video segment of an object region corresponding to an object selected in the other communication apparatus receiving the meta data segment to the other communication apparatus.

Abstract: A communication apparatus includes an acquisition unit configured to acquire a media content, a transmission unit configured to transmit the media content acquired by the acquisition unit to another communication apparatus, a determination unit configured to determine whether to describe, as an acquisition source URL of the media content acquired by the acquisition unit, a URL of the communication apparatus or a URL of the another communication apparatus, in accordance with a state of transmission of the media content by the transmission unit, a generation unit configured to generate, based on the determination made by the determination unit, a description file in which the acquisition source URL of each predetermined unit of the media content is described, and a provision unit configured to provide the description file generated by the generation unit.

Abstract: A communication apparatus includes a transmitting function and a receiving function for a radio signal, and, while belonging to a first group of devices, activates the transmitting and receiving functions to perform communication during a first period, and deactivates the transmitting and receiving functions outside the first period. The communication apparatus determines whether or not it performs monitoring for a presence of a second group of devices during a second period, controls performing of the monitoring by activating the receiving function during the second period when it is determined that the communication apparatus performs such monitoring, and keeping the transmission and receiving functions inactive outside the first period when it is determined that the communication apparatus does not perform such monitoring, and notifies another device in the first group of information related to the second group during the first period when a presence of the second group is detected.

Abstract: The invention relates to improving coding of media presentation description data. Requesting streamed timed media data associated with a media item, organized into temporal media segments, the streamed timed media data belonging to partitioned timed media data comprising timed samples, the streamed timed media data being transmitted as media segment files each comprising independently processed components resulting from processing the timed samples, including receiving a manifest comprising metadata for describing the processed components, the metadata comprising parameters used for describing a part of one of the processed components, wherein one of the parameters is a dynamic parameter which value can vary over time, the parameter being associated with an element referring to a metadata resource, external to the manifest and comprising a value defining the parameter; and requesting the streamed timed media data based on metadata of the manifest and of the value defining the parameter.

Abstract: A communication apparatus includes a transmitting function and a receiving function for a radio signal, and, while belonging to a first group of devices, activates the transmitting and receiving functions to perform communication during a first period, and deactivates the transmitting and receiving functions outside the first period. The communication apparatus determines whether or not it performs monitoring for a presence of a second group of devices during a second period, controls performing of the monitoring by activating the receiving function during the second period when it is determined that the communication apparatus performs such monitoring, and keeping the transmission and receiving functions inactive outside the first period when it is determined that the communication apparatus does not perform such monitoring, and notifies another device in the first group of information related to the second group during the first period when a presence of the second group is detected.

Abstract: A communication apparatus capable of communicating with another communication apparatus in a network conforming to NAN (Neighbor Awareness Networking), while joining a first NAN cluster included among a plurality of NAN clusters, detect an existence of a second NAN cluster included among the plurality of NAN clusters, compares an attribute value of the second NAN cluster with an attribute value of the first NAN cluster, and, when the attribute value of the second NAN cluster is lower than the attribute value of the first NAN cluster, transmits information indicating an existence of the first NAN cluster to the second NAN cluster.

Abstract: A communication apparatus includes: a specifying unit configured to specify a region in an image; a determination unit configured to determine a mode used for communication of image data from a plurality of modes including a first mode for communicating image data of a region of interest specified by the specifying unit, and a second mode for communicating, in addition to the image data of the region of interest, image data of a region of no interest which has not been specified by the specifying unit; and a communication unit configured to communicate image data with other communication apparatus in accordance with a mode determined by the determination unit.

Abstract: A communication apparatus includes a transmitting function and a receiving function for a radio signal, and, while belonging to a first group of devices, activates the transmitting and receiving functions to perform communication during a first period, and deactivates the transmitting and receiving functions outside the first period. The communication apparatus determines whether or not it performs monitoring for a presence of a second group of devices during a second period, controls performing of the monitoring by activating the receiving function during the second period when it is determined that the communication apparatus performs such monitoring, and keeping the transmission and receiving functions inactive outside the first period when it is determined that the communication apparatus does not perform such monitoring, and notifies another device in the first group of information related to the second group during the first period when a presence of the second group is detected.

Abstract: A transmission apparatus 101 divides an image into a plurality of image areas. In addition, the transmission apparatus 101 identifies one or a plurality of image areas corresponding to a position of a first object in the image. Next, the transmission apparatus 101 generates a segment corresponding to the one or plurality of image areas identified and a playlist in which a URL for accessing the segment is described. Next, the transmission apparatus 101 transmits the playlist in accordance with a request from the reception apparatus 102 and then, after the URL included in the playlist is accessed, transmits data regarding the segment whose address is indicated by the URL to the reception apparatus 102.

Abstract: A communication apparatus includes: a specifying unit configured to specify a region in an image; a determination unit configured to determine a mode used for communication of image data from a plurality of modes including a first mode for communicating image data of a region of interest specified by the specifying unit, and a second mode for communicating, in addition to the image data of the region of interest, image data of a region of no interest which has not been specified by the specifying unit; and a communication unit configured to communicate image data with other communication apparatus in accordance with a mode determined by the determination unit.

Abstract: The invention relates to improving coding of media presentation description data. Requesting streamed timed media data associated with a media item, organized into temporal media segments, the streamed timed media data belonging to partitioned timed media data comprising timed samples, the streamed timed media data being transmitted as media segment files each comprising independently processed components resulting from processing the timed samples, including receiving a manifest comprising metadata for describing the processed components, the metadata comprising parameters used for describing a part of one of the processed components, wherein one of the parameters is a dynamic parameter which value can vary over time, the parameter being associated with an element referring to a metadata resource, external to the manifest and comprising a value defining the parameter; and requesting the streamed timed media data based on metadata of the manifest and of the value defining the parameter.

Abstract: A communication apparatus includes: an acquisition unit configured to acquire media content; a generation unit configured to generate segments obtained by dividing the media content acquired by the acquisition unit by a predetermined division unit; a providing unit configured to provide another communication apparatus with a description file indicating a URL for acquisition of the segment already generated by the generation unit, and a URL for acquisition of a segment not yet generated by the generation unit; a receiving unit configured to receive, from the other communication apparatus, a request to specify a URL for acquisition indicated by the description file; and a transmitting unit configured to transmit, to the other communication apparatus, a segment corresponding to the URL for acquisition specified by the request of the other communication apparatus received by the receiving unit.