Abstract: An information processing system includes a controller, a terminal and a plurality of servers, and the controller attaches successive identification numbers to requests received from the terminal and transmits the requests to the plurality of servers and transmits one of responses received from the servers to the terminal, and each server receives, in the case where the identification number of this time and the identification number of the previous time are not successive numbers, the contents of a change (s) in resources associated with a missing identification number (a) from another server, and after changing the resources, performs predetermined processing in accordance with received request, creates a response, changes the resources, transmits the response to the controller, and stores the identification number of this time and the contents of the change in the resources associated with the identification number of this time.

Abstract: In order to combine N (N?3) pieces of image data including not only color data but also distance data and opacity data, when images that are to be combined are input, distance data of each pixel in each image data is sorted in parallel for each pixel data at identical coordinates in a plurality of images so as to determine the distance relationship as the order relationship concerning the input image data. On the other hand, color data and opacity data of each input image that are to be combined are stored in a pixel-by-pixel manner. The color data and opacity data stored in the storing step are read and rearranged in parallel by using the order relationship concerning the input image data obtained in the sorting step so that the color data and opacity data are arranged in the order relationship corresponding to the input images. The color data and opacity data rearranged in the rearranging step are combined, in an alpha blending technique, in parallel.

Abstract: In order to combine N (N≧3) pieces of image data including not only color data but also distance data and opacity data, when images that are to be combined are input, distance data of each pixel in each image data is sorted in parallel for each pixel data at identical coordinates in a plurality of images so as to determine the distance relationship as the order relationship concerning the input image data. On the other hand, color data and opacity data of each input image that are to be combined are stored in a pixel-by-pixel manner. The color data and opacity data stored in the storing step are read and rearranged in parallel by using the order relationship concerning the input image data obtained in the sorting step so that the color data and opacity data are arranged in the order relationship corresponding to the input images. The color data and opacity data rearranged in the rearranging step are combined, in an alpha blending technique, in parallel.