Abstract: A portable telephone set includes an image pickup unit, an input terminal for inputting an image from the outside, a display unit for displaying an image, an image input switching key for performing a switching operation in which any one of an image photographed by the image pickup unit and the image input from the input terminal is displayed on the display unit and transmitted from the portable telephone set, and an output terminal for outputting the image photographed by the image pickup unit. The image pickup unit is detachably connected to a portable telephone body by a plug and a jack, whereby there is provided such a portable telephone set which is capable of photographing and transmitting an image by only the portable telephone set and easily performing photographing at a desired angle even during speech communication using the portable telephone set.

Abstract: A method of processing original still picture data representing an original still image and stored in a video memory and storing processed still picture data representing a processed still image in a predetermined location of the video memory comprising the steps of setting an XY orthogonal coordinate system on the video memory, setting a reference line parallel to one of the X and Y axes of the orthogonal coordinate system and passing through a point of intersection of lines, each of which connects corresponding pixels of the original and processed still images, moving multiples the pixel data on a line of the original still image parallel to the reference line and furthest from the reference line to addresses of the video memory forming a line of the processed still image, and repeating the preceding step for pixel data on lines of the still image parallel to the reference line and second furthest from the reference line and succeeding lines, to thereby store the processed still picture data representing th

Abstract: Display data is read out from a display memory (2) and the display data thus read out is written in the buffer memory (8). Then, in a time sharing manner relative to the writing, the display data is read out from the buffer memory (8), and a smoothing processing is carried out on the basis of the display data thus read out and the display data read out from the display memory (2).