Canon Kabushiki Kaisha

Shun Sugimoto

Jiro Shirakata

Koichi Tanaka

A communication apparatus includes a processing unit that executes communication protocol processing by an OS kernel in place of the OS kernel. When the communication protocol processing by the OS kernel is hooked, a determination unit determines a state of a neighborhood entry holding cache information on a MAC header to be added to transmission data. A control unit controls a header generation processing based on the determined state of the neighborhood entry. The control unit, if the neighborhood entry holds valid cache information, performs control such that a processing unit generates a header of a layer higher than a MAC layer and the MAC header and, if the neighborhood entry does not hold valid cache information, performs control such that the processing unit generates the header of the higher layer and the OS kernel generates the MAC header.

Communication apparatus and control method thereof, and storage medium

An information processing apparatus that makes it possible to obtain a result of prediction of a consumption degree (remaining amount) of a consumable at a desired timing. The information processing apparatus is capable of communicating with an image forming apparatus that forms an image using toner supplied from a toner container mounted thereon. A reception unit receives first information on a consumption amount of the toner by the image forming apparatus. A controller acquires date information on a designated date, and determines second information on a consumption amount of the toner by the designated date, based on the first information in an amount corresponding to a predetermined number of days before a certain day before the designated date.

Information processing apparatus that determines replacement time of replacement components

A communication apparatus for transmitting a virtual viewpoint video receives an acquisition request for a virtual viewpoint video, acquires viewpoint position information indicating a viewpoint position for the virtual viewpoint video from an apparatus that made the acquisition request, and transmits a virtual viewpoint video segment corresponding to the viewpoint position information to the apparatus that made the acquisition request. The virtual viewpoint video is video data in a format in which a video from any viewpoint position in a three-dimensional space can be rendered, and the virtual viewpoint video segment is generated by encoding the virtual viewpoint video as a two-dimensional video based on the viewpoint position information.

Communication apparatus, communication method, and computer-readable storage medium

A communication apparatus determines a size of transmission data to be input into a processing unit, which performs transmission control protocol/internet protocol (TCP/IP) processing, at one time, based on information relating to communication between the communication apparatus and another communication apparatus and information relating to a communication interface of the own apparatus.

Communication method, communication apparatus, and program for reducing delay time of transmission control protocol (TCP) transmission processing

A transmission apparatus transmits, to a reception apparatus, first video captured by an imaging apparatus and second video captured to detect a position and orientation of the imaging apparatus when capturing the first video, and includes a memory containing instructions, and at least one processor for executing the instructions. The instructions are executed to operate as a control unit to control transmission rates of the first and second videos so that a transmission rate ratio between the first video and the second video changes, and a transmission unit to transmit the first video and the second video to the reception apparatus in accordance with the controlled transmission rates. The control unit further controls the transmission rates of the first video and the second video so that the transmission rate of the second video decreases if a communication bandwidth between the transmission apparatus and the reception apparatus decreases.

Transmission apparatus, mixed reality system, transmission method, and program

A reception apparatus includes a plurality of reception units each corresponding to a communication path among a plurality of communication paths, and a generation unit configured to, in a case where the plurality of reception units receives a first data unit and a second data unit, generate the first data unit at a first time corresponding to a time at which the plurality of reception units has completed reception of data forming the first data unit, and generate the second data unit at a second time corresponding to a time at which the plurality of reception units has completed reception of data forming the second data unit.

Reception apparatus, reception method, and recording medium

Provided is a generating apparatus generating error-correcting code for data packet including: a first determining unit configured to determine a redundancy range for the error-correcting code; a second determining unit configured to determine a combination of a plurality of interleaving lengths indicating an interval of a plurality of data packets for which the error-correcting code is generated; and a generating unit configured to generate the error-correcting code for the data packet, based on a combination of the plurality of interleaving lengths determined by the second determining unit, wherein the second determining unit determines the combination of the plurality of interleaving lengths, such that a total redundancy of the error-correcting codes for the data packets corresponding to the combination of the plurality of interleaving lengths falls within a range of redundancy determined by the first determining unit.

Generating apparatus, generating method and recording medium

An encoding apparatus for encoding video data captured by a plurality of imaging units by a predetermined data unit, includes an encoding unit configured to refer to a first data unit included in video data captured by a first imaging unit to encode a second data unit included in the video data captured by the first imaging unit, and refer to a third data unit included in video data captured by a second imaging unit to encode a fourth data unit included in the video data captured by the first imaging unit.

Encoding apparatus, encoding method, and non-transitory computer-readable storage medium

An imaging apparatus connected to another imaging apparatus and a reception apparatus via a network. A reception section receives a transmission request requesting transmission of first video data photographed by the imaging apparatus to the reception apparatus, from the reception apparatus. A determination section determines, based on processing load on the imaging apparatus, a distribution capacity of the imaging apparatus, or conditions of the network, whether or not the imaging apparatus is to execute transmission processing for transmitting the first video data to the reception apparatus. An acquisition section acquires, in a case where the determination section has determined that the imaging apparatus is not to execute the transmission processing, a transmission destination to which a request for acquiring second video data photographed by said another imaging apparatus is to be transmitted.

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Tokyo, Japan

Shun Sugimoto