Abstract: An energy management apparatus includes: a communicator capable of communicating with at least a meter apparatus among the meter apparatus and a server apparatus that collects measurement information from the meter apparatus; a device registration processor configured to determine whether the direct communicator to the server apparatus can communicate with the server apparatus; if the direct communication is possible, transmit to the server apparatus a device registration message that requests to register a device identifier of the meter apparatus and a device identifier of the energy management apparatus; and, if the direct communication to the server apparatus is not possible, transmit the device registration message for the server apparatus to the meter apparatus; a communication processor configured to obtain energy control information of the device transmitted from the server apparatus; and a control executor configured to control the used energy amount of the device based on the energy control informati

Abstract: According to one exemplary embodiment, a charging/discharging determination apparatus includes: a receiving module which receives information of a rated capacity of a battery; and a determination module which determines that charging or a discharge of the battery is permitted if an absolute value of a difference between the rated capacity and a measured capacity which is an actual capacity of the battery is within a threshold value.

Abstract: There is provided a charge/discharge determining apparatus for managing a natural energy power generation facility, a power plant and a plurality of batteries in an electrical power system. The apparatus includes: a system information acquiring section configured to acquire an actual value of natural energy power that is supplied from the natural energy power generation facility to the electrical power system; a battery information acquiring section configured to acquire battery electric energy information from the respective batteries, wherein the battery electric energy information indicates charge/discharge electric energies of the respective batteries which can be discharged from or charged in the respective batteries; and a determining section configured to determine at least one battery to be charged/discharged from among the plurality of batteries, wherein when an absolute value of a difference between the actual value and a predicted value of the natural energy power is larger than a threshold value.

Abstract: The communication unit transmits and receives a communication message. The authentication processor performs an authentication process for establishing the network connection by transmitting and receiving an authentication message to and from an authentication server through the communication unit. The encryption information generator generates an encryption key shared with the authentication server when the authentication process is successfully completed. The first message generator generates a first communication message instructing the destination device to acquire the encryption key from the authentication server. The second message generator generates a second communication message including data to be transmitted to the destination device. The communication unit transmits the first communication message to the destination device, encrypts the second communication message with the encryption key, and transmits an encrypted second communication message to the destination device.

Abstract: A physical frame is generated and transmitted to a destination terminal. In this physical frame, one of a data frame, an acknowledgement frame, and an acknowledgement request frame, and a transmission permission frame which is used in place of a normal Ack frame associated with a delayed Block Ack, and permits the destination terminal to perform piggyback transmission, are aggregated.

Abstract: A virtual computer server apparatus includes an image information memory to store image information upon dividing into pages, the page being a memory of a predetermined size, an update unit configured to update the image information stored in the image information memory in accordance with operation of the application program, an update page detection unit configured to detect an update page from the pages storing image information transmitted to the terminal and displayed by the terminal as a display area, an update image detection unit configured to detect the image information updated by the update unit from image information in the update page before updated and image information in the update page after updated.

Abstract: A communication apparatus which generates a single physical frame including a plurality of MAC frames, and which transmits the physical frame. The physical frame has variable-length bitmap information which includes bits corresponding to the plurality of MAC frames, respectively, and length information of the bitmap information. The communication apparatus can include a transmission scheme selecting device configured to select a transmission scheme of the physical frame to be transmitted as a response to the polling frame from a plurality of candidates in such a manner as to adapt to a channel estimate result estimated by the channel estimating device. The transmission scheme in this arrangement includes at least one of a modulation scheme and a coding ratio.

Abstract: A signaling unit of a display terminal establishes communication with a content server, video communication terminal, and PC server through a communication unit, and transmits/receives image data compressed by MPEG2, MPEG4, and JPEG. A media control unit switches compression schemes for decoding in a media processing unit on the basis of the received image data. The media processing unit performs decoding processing including inverse orthogonal transformation processing and dequantization processing in accordance with the switched compression scheme. At this time, a single processing circuit performs inverse orthogonal transformation processing and dequantization processing.

Abstract: According to one embodiment, a power control apparatus includes a calculation unit, a detection unit, a storage unit, a selection unit and an execution unit. The calculation unit calculates a spare power capacity and a total spare power capacity. The detection unit detects whether a required spare capacity is short, based on the required spare capacity and each of the spare power capacity and the total spare power capacity. The storage unit stores power control operation items. The selection unit selects power control operation items if the required spare capacity is short. The execution unit executes application operation of one or more the power control operation items until the required spare capacity becomes available, and executes waiting operation of one or more power control operation items executing the application operation if the required spare capacity is available.

Abstract: An example server apparatus includes a video stream receiver configured to receive a first video stream encoded by a first coding scheme from a video providing apparatus via a network and a video stream generator configured to generate a second video stream obtained by converting a coding scheme of the first video stream from the first coding scheme to a second coding scheme. A client capability information acquirer is configured to acquire decoding capability information representing whether a client apparatus can decode a video image encoded by the first coding scheme and a video stream processing determiner is configured to transmit the first video stream to the client apparatus when the client apparatus can decode the video image encoded by the first coding scheme, and to transmit the second video stream to the client apparatus when the client apparatus cannot decode the video image encoded by the first coding scheme.

Abstract: According to one embodiment, a communication device includes an image storage unit storing a display image, an update image generation unit generating an update image used to update the display image, a detection unit detecting a difference region representing a region in which pieces of pixel information do not match between the update image and the display image, and a compression image generation unit generating a difference region compression image. The communication device further includes a moving picture generation unit generating a moving picture at a designated frame rate, a control unit comparing the size of the difference region with a first threshold and performs control of decreasing a frame rate designated to the moving picture generation unit when the size of the difference region is larger than the first threshold, and a transmission unit transmitting the compression image and the moving picture to the display device.

Abstract: The address calculating unit calculates a virtual address of a page for each pixel of a rectangular region of a predetermined size that is included in a screen. The acquiring unit acquires a physical address in correspondence with the virtual address of each pixel of the image information for which writing is requested, in accordance with a conversion table. The writing unit writes the image information for which writing is requested at the acquired physical address. The detecting unit detects an updated portion of the image information the content of which does not match before and after the writing, in units of pages. The compressing unit compresses the image information of the updated portion that is detected.

Abstract: A wireless communication apparatus includes a main queue to store MAC frames, a plurality of subqueues related to the main queue and used to control retransmission of the MAC frame, each of the subqueues having different priority for transmission of the MAC frame, respectively, an extracting device configured to extract the MAC frame from the main queue on the basis of a destination and the priority, and distribute the extracted MAC frame to one of the plurality of subqueues for each priority, and an aggregating device configured to extract MAC frames from the plurality of subqueues to form a MAC super frame.

Abstract: A communication apparatus includes an image information acquisition unit configured to acquire new image information to be transmitted to a display terminal through a wireless access point, a storage unit configured to temporarily store the image information, a decision unit configured to decide to change a state of a wireless communication processing unit of the display terminal from a power save state to a normal state when an amount of the image information stored in the storage unit is not less than a predetermined threshold value, a message generation unit configured to generate a change instruction message in response to decision of the decision unit, and a transmission unit configured to transmit the change instruction message to the display terminal through the wireless access point to instruct the display terminal to change the state of the wireless communication processing unit from the power save state to the normal state.

Abstract: A communication apparatus having a generating which generates a single physical frame for transmission and reception. The physical frame includes a first Quality of Service (QoS) data frame, a second Quality of Service (QoS) data frame, and a transmission request for requesting transmission of first acknowledgement information corresponding to the first QoS data frame and second acknowledgement information corresponding to the second QoS data frame. The communication apparatus includes a transmitting unit configured to transmit the physical frame and a receiving unit configured to receive acknowledgment information including a reception of the physical frame transmitted.

Abstract: A communication apparatus includes a receiving device configured to receive one physical frame in which a plurality of MAC frames are aggregated. This physical frame includes one acknowledgement request frame for the plurality of MAC frames. The apparatus includes an acknowledgement frame forming device configured to form an acknowledgement frame representing reception statuses of the plurality of MAC frames in response to the acknowledgement request frame. The apparatus also includes a transmitting device configured to transmit the acknowledgement frame. This acknowledgement frame includes a compressed acknowledgement frame representing an acknowledgement bitmap having a size equal to a maximum number of MSDUs (MAC Service Data Units) when one MPDU (MAC Protocol Data Unit) corresponds to one MSDU.

Abstract: A communication apparatus includes a first generation unit which sequentially generates image data in accordance with an event occurring due to a change in an operating state of an application program; a difference detecting unit which detects a difference between a plurality of consecutive image data generated by the first generation unit; a second generation unit which generates send data to be sent to the display terminal by compressing to the difference; a message generating unit which generates a message to change the spatial multiplexing number to either one or a plural number according to the change in the operating state of the application program or the difference; and a sending unit which sends the message to the wireless access apparatus prior to sending to the display terminal of the send data generated by the second generation unit.

Abstract: A communication apparatus includes a receiving device configured to receive one physical frame in which a plurality of MAC frames are aggregated. This physical frame includes one acknowledgement request frame for the plurality of MAC frames. The apparatus includes an acknowledgement frame forming device configured to form an acknowledgement frame representing reception statuses of the plurality of MAC frames in response to the acknowledgement request frame. The apparatus also includes a transmitting device configured to transmit the acknowledgement frame. This acknowledgement frame includes a compressed acknowledgement frame representing an acknowledgement bitmap having a size equal to a maximum number of MSDUs (MAC Service Data Units) when one MPDU (MAC Protocol Data Unit) corresponds to one MSDU.

Abstract: There is provided a server device including a thinning processing unit which, if an object of operation with control instructions received by a reception unit is an application program stored in a storage unit in association with the control instruction, executes thinning processing for the plurality of control instructions received using a thinning processing method stored in association with the control instruction.

Abstract: A communication apparatus includes a receiving device configured to receive a physical frame in which a plurality of MAC frames, each having a sequence number, are aggregated. A reception buffer which stores MAC frames of the physical frame received by the receiving device. A determination device determines whether or not the first MAC frame in the physical frame received by the receiving device has been successfully received. A reception buffer management device determines, when the first MAC frame has been successfully received, a MAC frame to be forwarded to an upper layer, on the basis of the sequence number of the first MAC frame, and extracts the MAC frame from the reception buffer.