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: There is provided with a method performed in an image transmission apparatus capable of executing first communication and second communication whose communication speed is lower than that of the first communication with a display apparatus, including: generating an image to be displayed on the display apparatus; detecting whether the first communication is executable or not; transmitting the generated image to the display apparatus via the first communication when the first communication is executable; transmitting a compressed image obtained by compressing the generated image to the display apparatus via the second communication when the first communication is not executable; and transmitting compression utilization information required to display the compressed image on the display apparatus to the display apparatus via at least one of the first communication and the second communication when the first communication is executable.

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 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: Image control involves receiving source images defined with respect to respective source coordinate systems from source image generators also respectively associated with source IDs. The source images are composed to generate a composite image defined with respect to a composed coordinate system, and the composed image is sent to a viewer which displays the composed image and outputs an HID signal which indicates information defined with respect to the composed coordinate system. A layout manager stores source IDs respectively associated with layout information including position and size of at least one of the source images. An image composer composes the source images according to the layout information. An analyzer analyzes the HID signal for editing layout information stored in the layout manager, and determines a source ID a source image according to the layout information.

Abstract: In an image transmission apparatus an image data generator generates image data that represents an image. An updated image data generator generates updated image data that represents an updated image of an updated region of the image. A compressor compresses the updated image data. A transmitter stores the updated image data that is compressed by the compressor. An updated image data storage stores the updated image data. A transmission result storage stores transmission result data that includes quality information and time information, the quality information relating to an image quality, the time information indicating when the updated image data is generated. A transmission data selector selects the updated image data stored in the updated image data storage, and sets the image quality of the updated image data selected, according to the transmission result data stored in the transmission result storage.

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 connection control apparatus includes a monitoring unit, a determining unit, a transferring unit, and a notifying unit. The monitoring unit monitors a status of a communication terminal. The determining unit determines, on a basis of a monitoring result, whether or not the communication terminal is able to respond to a connection request therefor. The transferring unit transfers the connection request to the communication terminal when the transferring unit has received a connection request for the communication terminal and the determining unit determines that the communication terminal is able to respond to the connection request. The notifying unit calls attention around the connection control apparatus when the determining unit determines that the communication terminal is unable to respond to the connection request after the transferring unit has received the connection request.

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 setting storage unit stores first setting information that defines an operation of a first application that runs on a guest OS and second setting information that defines an operation of a second application that runs on at least one of another guest OS and a host OS. A correspondence storage unit stores first identification information for identifying the first setting information and second identification information for identifying the second setting information, in association with each other. An alternative access gaining unit reads from the correspondence storage unit the second identification information corresponding to the first identification information of the first setting information for which an access request is received, and accesses the second setting information of the second identification information that is read out, in place of the first setting information for which the access request is received.

Abstract: According to an aspect of the present invention, there is provided with a screen transmission device including: an information receiver configured to receive operating condition information indicating an operating condition of a screen display device; a coloring determiner configured to determine coloring of screen data to be displayed on the screen display device based on the operating condition information; a screen data generator configured to generate screen data to be displayed on the screen display device according to the coloring; and a screen data transmitter configured to transmit the screen data to the screen display device.

Abstract: There is provided with a method of performing in a server apparatus sharing an image to be displayed on a screen with a client terminal, including: updating a part of an image in a frame buffer; generating a first packet which includes first area information indicating a first area updated in the image, a first image which is an image after update in the first area and a sequence number assigned by a sequence number counter and transmitting it; storing a set of the first area information and the sequence number in a storage; receiving a retransmission request including a sequence number from the client terminal; detecting a second area which is not updated in the first image which corresponds to the sequence number included in the retransmission request after the transmission of the first image by referring to the storage; acquiring a second image in the second area from the frame buffer.

Abstract: A screen data transmitting device for transmitting screen data to a screen display terminal through a network. A generation device generates a display image data. A storage device stores compression properties information associating a plurality of compression schemes with a plurality of classes of graphical user interface (GUI) components. A selection device selects one of the compression schemes with respect to a GUI component that is present in a region of the display image data. A compression device compresses the region of the display image data according to the selected compression scheme. Then, a transmission device transmits the screen data including the compressed display image data to the screen display terminal.

Abstract: A server includes a generating unit which generates image data in a partial region of a displayed image on the screen; a type identifying unit configured to identify a type of a GUI component included in the region of the generated image data; a storage which stores compression property information for each GUI component type; a compression scheme deciding unit which decides a compression scheme based on compression property information corresponding to the GUI component type identified; a compression unit which compresses the generated image data with a decided compression scheme; a transmission unit which transmits the compressed data to the client terminal; an update frequency deciding unit which decides a update frequency of the compression property information in the storage for each type of the GUI component; and an updating unit which updates the compression property information with the update frequency decided for each type of the GUI component.

Abstract: An image content transmitting server includes a remote control service unit that transmits, to an image display apparatus connected via a network, data of a desktop screen displayed on another display apparatus, and receives an input from an input unit connected to the image display apparatus; an image-content transmission service unit that transmits a list of identification information of image contents to the image display apparatus, and transmits the image contents to the image display apparatus, based on the identification information of the image contents included in the list of identification information; and a service advertising unit that advertises services implemented by the remote control service unit and the image-content transmission service unit to the image display apparatus in accordance with a discovery protocol for finding the services.

Abstract: The detecting unit detects a disconnection of communications that have been established with a display apparatus. When the disconnection of the communications is detected, the message generating unit generates a confirmation message that confirms whether the communications should be reestablished. The transmitting unit transmits the confirmation message to the display apparatus. The receiving unit receives a reply message that indicates whether the communications should be reestablished from the display apparatus. The main power supply controlling unit shuts down the main power supply when the reply message indicates that the communications should not be reestablished, or when no reply message is received.

Abstract: An apparatus that communicates with a screen display apparatus: a generation unit configured to generate image data to be displayed on a screen; an identification unit configured to identify an overlapping area that overlaps with the image data for each of a plurality of divided areas into which the screen is divided, respectively; a division unit configured to divide respective partial image data belonging to the respective overlapping areas in a vertical direction or a horizontal direction of the screen; a data compression processor configured to compress respective divided image data belonging to the respective divided areas by using dictionary data obtained based on a predetermined amount of divided image data compressed in the past belonging to the respective divided areas; and a data transmission unit configured to transmit respective compressed image data belonging to the respective divided areas in an order defined according to a rule given in advance.

Abstract: There is provided with a server device which outputs a result of computation processing to an output device, including: a communication unit configured to receive a connection request from an input device; an output device manager configured to store an identifier of the output device; and an connection controller configured to acquire output capability information of the output device, configured to acquire input capability information of the input device, configured to generate secret information which can be input to the input device and can be output by the output device, on the basis of the input capability information and the output capability information, configured to transmit the secret information to the output device, and configured to generate a result of computation processing based on input information received from the input device for transmitting to the output device in a case of receiving the secret information from the input device.

Abstract: An information transfer apparatus includes a first image holding unit configured to hold image information of a first region updated in a display screen, a data compressing unit configured to perform compression processing of the image information of the first region outputted from an image acquiring unit, a second image holding unit configured to hold the image information of the first region compressed by the data compressing unit, a region determining unit configured to determine a second region to be a transfer object of a compression error caused by the data compressing unit among the first region, based on output of the image acquiring unit, a data expanding unit configured to extract and expand image information of the second region of the image information held by the second image holding unit, an error calculating unit configured to generate error image information including a compression error based on the image information of the second region in the image information held by the first data holding

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.