Abstract: An image composing and displaying apparatus includes frame memory constituent elements of an identical structure, a video input section, a video output section, a controller for selecting connection of each element to the video input or output section, and an image drawing section for reading and writing video data from and in the elements. The memory elements can be used for the input and output operations and hence the size thereof can be easily expanded; moreover, the numbers of the elements respectively connected to the video input and output sections can be adaptively varied.

Abstract: An image restoring apparatus is provided that can restore an image disturbed by transmission error to a natural image in real time even if the transmission error occurs frequently. The image restoring apparatus has refresh control means for updating all the image data of a frame, inframe correcting means for effecting correction processing in the frame, and selecting means for selecting either of the refresh control means or the in-frame correcting means by detecting of number or positions of blocks having an error in the pixel data of the frame.

Abstract: An image composing and displaying apparatus includes frame memory constituent elements of an identical structure, a video input section, a video output section, a controller for selecting connection of each element to the video input or output section, and an image drawing section for reading and writing video data from and in the elements. The memory elements can be used for the input and output operations and hence the size thereof can be easily expanded; moreover the numbers of the elements respectively connected to the video input and output sections can be adaptively varied.

Abstract: An image composing and displaying apparatus includes frame memory constituent elements of an identical structure, a video input portion, a video output portion, a controller for selecting connection of each element to the video input or output portion, and an image drawing portion for reading and writing video data from and in the memory elements. The memory elements can be used for the input and output operations and hence the size thereof can be easily expanded; moreover, the numbers of the elements respectively connected to the video input and output portions can be adaptively varied.

Abstract: A document communication apparatus includes an input unit for giving various indications such as document processing; a communication unit for transmitting and receiving information and rules of document processing in communication with another document communication apparatus, and an information processing unit for processing document information based on the received rules of document process Further, a communication apparatus for transmitting or receiving information among plural communication apparatuses makes it possible to transmit and receive a document with the rules of document processing corresponding to the content of at least a request for document processing.

Abstract: An image composing and displaying apparatus includes frame memory constituent elements of an identical structure, a video input portion, a video output portion, a controller for selecting connection of each element to the video input or output portion, and an image drawing portion for reading and writing video data from and in the memory elements. The memory elements can be used for the input and output operations and hence the size thereof can be easily expanded; moreover, the numbers of the elements respectively connected to the video input and output portion can be adaptively varied.

Abstract: In a telemeeting terminal for performing communication between remote locations by using multiple media, the other party of a meeting is identified in a display picture and thereafter switching to a principal picture for presenting and explaining materials meeting is performed. As a result, it is possible to keep materials used in the meeting secret.