Canon Kabushiki Kaisha

Makoto Kunimatsu

Kensuke Yasuma

Tomoya Sakai

Yukio Numakami

Kazuya Taniguchi

A communication apparatus receiving data included in a content from a transmitting apparatus by using a logical connection with the transmitting apparatus includes a notifying unit configured to notify the transmitting apparatus of information regarding an amount of data that the communication apparatus permits transmission of data using the logical connection from the transmitting apparatus to the communication apparatus, a receiving unit configured to receive data included in the content transmitted from the transmitting apparatus in response to the notification performed by the notifying unit, and a control unit configured to control so as to inhibit the notification by the notifying unit until the logical connection is disconnected in a case where the amount of data not received by the receiving unit of the data included in the content is smaller than a predetermined value.

Communication apparatus, communication method, and storage medium

A communication apparatus establishes a connection and at least one stream for communication with another communication apparatus, determines a first window size relating to a buffer size for the connection and a second window size relating to a buffer size for the at least one stream based on communication information about communication between the communication apparatus and the other communication apparatus, and transmits to the other communication apparatus the first and second WINDOW_UPDATE frames.

Communication apparatus, communication method, communication system, and storage medium

When, in communication using a protocol in which at least two streams are established over a connection, a notification that a new stream will be reserved is made, a process for preventing a non-communication state exceeding a predetermined amount of time is initiated and a frame is sent at least every predetermined amount of time in the case where there is no other stream currently reserved, whereas processing is ended without initiating the stated process in the case where there is already a reserved stream.

Communication device, communication system and medium

A router of a first network and a router of a second network are connected to a third network. A connection request including information relating to the direction of communication performed by a first service provider that exists on the first network is transmitted from the first network to the second network via the third network. On the basis of the information relating to the direction of communication included in the connection request transmitted from the first network to the second network, a second service provider that exists on the second network is selected and a response that includes identification information of the selected second service provider is transmitted from the second network to the first network via the third network.

Growing community of inventors

Tokyo, Japan

Makoto Kunimatsu