Abstract: A communication apparatus, which includes a plurality of communication control units each including a hardware clock, determines an adjustment parameter value to adjust a time of the hardware clock in a first communication control unit of the plurality of communication control units, where the first communication control unit is configured to communicate with a time distribution server. Based on a precision time protocol (PTP), the communication apparatus adjusts the time of the hardware clock in the first communication control unit using the adjustment parameter value, and adjusts a time of the hardware clock in at least one second communication control unit of the plurality of communication control units, using the adjustment parameter value, the first communication control unit being different from the second communication control unit.

Abstract: An apparatus generates an image file including a first region storing a plurality of instances of image data and a second region storing metadata. The metadata includes group information that groups image data shot synchronously with respect to time, the group information indicating image data belonging to a group, and indicator information that indicates an indicator of grouping for the group. The apparatus sets a reference indicating whether the image data has been shot synchronously with respect to time, determines whether the image data has been shot synchronously with respect to time, configures the group information grouping the image data to have been shot synchronously with respect to time, configures the indicator information including at least information of the reference, and generates the file storing the plurality of instances of image data, the group information, and the indicator information.

Abstract: An apparatus generates an image file having a structure including a first region and a second region, the first region storing a plurality of instances of image data and the second region storing metadata pertaining to the plurality of instances of image data. The metadata includes synchronous group information that groups image data shot synchronously with respect to time, the synchronous group information indicating image data, among the plurality of instances of image data, belonging to a group created by the grouping, and indicator information that indicates an indicator of grouping for the group indicated by the synchronous group information. The apparatus configures the synchronous group information and the indicator information based on the shooting information, and generates the image file storing the plurality of instances of image data, and the configured synchronous group information and the configured indicator information.

Abstract: An image file creation apparatus for creating an image file according to a predetermined image file format of a structure including an image data area that stores images and a metadata area that stores metadata as information concerning the images, decides a plurality of images to be continuously displayed, from the images stored in the image data area; and creates identification information for each of the plurality of images and information of a position in the image data area where the image corresponding to the identification information is stored and stores the created information in the metadata area, and also stores, in the metadata area, information indicating a display order of the plurality of images and information indicating a display time of each of the plurality of images.

Abstract: An information processing apparatus includes an acquisition unit configured to acquire a first type of data, a generation unit configured to generate a type of time information according to time information of a second type of data among a plurality of types of time information as time information of the first type of data, and a transmission unit configured to transmit the first type of data and the time information of the first type of data that is generated by the generation unit to an external apparatus, which is configured to receive the first type of data and the second type of data from plurality of apparatuses and then perform processing while associating the first type of data and second type of data with each other.

Abstract: A communication apparatus notifies a partner terminal of delayed acknowledgement (ACK) information, and the partner terminal determines a retransmission time out (RTO) minimum value based on the delayed ACK information. The communication apparatus notifies the partner terminal of the delayed ACK information using a transmission control protocol (TCP) header option at the time of a TCP connection, or using an application. Alternatively, the communication apparatus provides the delayed ACK information for an ACK packet when transmitting a delayed ACK. The partner terminal determines the RTO minimum value in such a manner that the RTO minimum value does not fall below an acquired delayed ACK timer value.

Abstract: A communication apparatus having a first state and a second state having different power consumptions receives a communication start request from another communication apparatus when the communication apparatus is in the first state, shifts a state of the communication apparatus to the second state having power consumption which is larger than that of the first state, in response to the reception of the communication start request, and transmits a response to the communication start request to the another communication apparatus if the communication setting used for the communication with the another communication apparatus is not changed after shifting to the second state, and does not transmit a response indicating that the communication in accordance with the communication start request is available to the another communication apparatus if the communication setting is changed.

Abstract: There is provided a communication apparatus in which power consumption by wired connection is reduced in a standby state. An acquisition unit acquires information indicating whether a partner apparatus connected to the communication apparatus by wired connection has a function of waiting in a power saving state in the wired connection. Based on the acquired information, a setting unit sets a communication speed with the partner apparatus. The function of waiting in the power saving state in the wired connection is, for example, LPI (Low Power Idle).

Abstract: A communication apparatus notifies a partner terminal of delayed acknowledgement (ACK) information, and the partner terminal determines a retransmission time out (RTO) minimum value based on the delayed ACK information. The communication apparatus notifies the partner terminal of the delayed ACK information using a transmission control protocol (TCP) header option at the time of a TCP connection, or using an application. Alternatively, the communication apparatus provides the delayed ACK information for an ACK packet when transmitting a delayed ACK. The partner terminal determines the RTO minimum value in such a manner that the RTO minimum value does not fall below an acquired delayed ACK timer value.

Abstract: There is provided a communication apparatus in which power consumption by wired connection is reduced in a standby state. An acquisition unit acquires information indicating whether a partner apparatus connected to the communication apparatus by wired connection has a function of waiting in a power saving state in the wired connection. Based on the acquired information, a setting unit sets a communication speed with the partner apparatus. The function of waiting in the power saving state in the wired connection is, for example, LPI (Low Power Idle).

Abstract: A communication apparatus having a first state and a second state having different power consumptions receives a communication start request from another communication apparatus when the communication apparatus is in the first state, shifts a state of the communication apparatus to the second state having power consumption which is larger than that of the first state, in response to the reception of the communication start request, and transmits a response to the communication start request to the another communication apparatus if the communication setting used for the communication with the another communication apparatus is not changed after shifting to the second state, and does not transmit a response indicating that the communication in accordance with the communication start request is available to the another communication apparatus if the communication setting is changed.

Abstract: A processing apparatus that processes received IP packets comprises a control unit and a processing unit, wherein the control unit controls a first memory. While data indicating a reception state of fragmented IP packets is transferred from a second memory to the first memory, the processing unit performs processing for determining whether a header of an IP packet has been properly received. The processing unit instructs the control unit to update the data stored in the first memory depending on a result of the processing for determining whether the header of the IP packet has been properly received.

Abstract: An information processing apparatus includes a communication device configured to communicate with a client apparatus via a network, an application system device configured to implement a previously installed application function, and a power controller configured to, if the communication device receives a request for starting a communication performed by the application system device from the client apparatus when the application system device is in a low power consumption state, restore the application system device from the low power consumption state to a normal power consumption state.

Abstract: An application device includes a network communication unit and an application system unit. The application system unit executes application communication utilizing one of a first TCP/IP protocol processing performed by the network communication unit and a second TCP/IP protocol processing performed by the application system unit. The network communication unit switches the process with which the application communication is processed to one of the first TCP/IP protocol processing and the second TCP/IP protocol processing based on a communication condition of the application communication.

Abstract: A processing apparatus that processes received IP packets comprises a control unit and a processing unit, wherein the control unit controls a first memory. While data indicating a reception state of fragmented IP packets is transferred from a second memory to the first memory, the processing unit performs processing for determining whether a header of an IP packet has been properly received. The processing unit instructs the control unit to update the data stored in the first memory depending on a result of the processing for determining whether the header of the IP packet has been properly received.

Abstract: An application device includes a network communication unit and an application system unit. The application system unit executes application communication utilizing one of a first TCP/IP protocol processing performed by the network communication unit and a second TCP/IP protocol processing performed by the application system unit. The network communication unit switches the process with which the application communication is processed to one of the first TCP/IP protocol processing and the second TCP/IP protocol processing based on a communication condition of the application communication.

Abstract: An information processing apparatus includes a communication device configured to communicate with a client apparatus via a network, an application system device configured to implement a previously installed application function, and a power controller configured to, if the communication device receives a request for starting a communication performed by the application system device from the client apparatus when the application system device is in a low power consumption state, restore the application system device from the low power consumption state to a normal power consumption state.

Abstract: In remote photographing of a camera constituted by an imaging apparatus and a separable display apparatus, the imaging apparatus continuously generates display image data and storage image data. The storage image data is temporarily stored by relating the storage image data to photographing timing data. Further, the imaging apparatus transmits to the display apparatus by relating the display image data to the photographing timing data, and the display apparatus displays a display image. When photographing is instructed by a user, the display apparatus transmits timing data corresponding to an image displayed at the time of detecting the photographing instruction to the imaging apparatus. The imaging apparatus determines a storage image corresponding to the timing data from the display apparatus to be a photographed image and stores the image.