Abstract: A video management device includes a storage processing unit configured to store video data received through a network in a storage unit, a calculation unit configured to classify a video data group stored in the storage unit based on combinations of imaging locations and content of video data, and to calculate a frequency of appearance of each of the combinations, and a selection unit configured to select video data to be deleted from the storage unit based on the frequency of appearance, thereby increasing a possibility that the deletion of a high-value video will be avoided.

Abstract: A data transmission apparatus causes a computer to receive first data and second data, each of which has a different transmission destination, evaluate relevance between the first data and the second data, and transmit the first data and the second data to the respective transmission destinations, and the transmitting of the data further includes transmitting the first data to the transmission destination of the second data in accordance with evaluation results obtained in the evaluating of the relation, so that a diversity of the data that can be collected by the transmission destination of the data is increased.

Abstract: An information delivery technique for, at the time of delivery of area information via a network, delivering area information about a destination before a device arrives at the destination is disclosed. One aspect of the present disclosure is an information delivery apparatus including a delivery information management function unit configured to manage area information to be delivered, a destination management function unit configured to manage a destination of a device, and a communication function unit configured to deliver the area information to the device, wherein the destination management function unit determines the destination of the device using movement information about the device, and the communication function unit delivers area information about the destination to the device before the device moves to the destination.

Abstract: A time providing method includes: by a computer, upon receiving data from a device, estimating a generation time of the data using a reception time of the data and a first delay time of the device previously estimated; providing information indicating the generation time to the data; and transmitting the data provided with the information indicating the generation time to a destination of the data.

Abstract: A data distribution system including a source configured to distribute data and a sink configured to process the distributed data includes a marker configured to receive a packet distributed by the source, add supplementary information to the received packet based on information obtained from a header of the packet, and transfer the packet; and a filter configured to receive the packet transferred by the marker, determine whether the received packet can be transferred to the sink based on the supplementary information added to the packet, transfer the packet to the sink if the packet can be transferred to the sink.

Abstract: In one aspect of the present invention, a transfer apparatus includes a reception unit configured to receive a packet from a source which distributes data according to a transmission control protocol (TCP); a storage unit configured to store data included in the received packet in a buffer based on a TCP sequence number of the received packet; a TCP transfer unit configured to transfer the received packet to a first sink which requests distribution according to the TCP; and a UDP transfer unit configured to read the data from the buffer and transfer the read data to a second sink which requests distribution according to a user datagram protocol (UDP).

Abstract: A data distribution system including a source configured to distribute data and a sink configured to process the distributed data includes a marker configured to receive a packet distributed by the source, add supplementary information to the received packet based on information obtained from a header of the packet, and transfer the packet; and a filter configured to receive the packet transferred by the marker, determine whether the received packet can be transferred to the sink based on the supplementary information added to the packet, transfer the packet to the sink if the packet can be transferred to the sink.