Abstract: A video signal conversion device performs the process of: selecting a selected video signal out of two or more video signals input; recognizing the signal type of the selected video signal; converting, in accordance with the result of recognition, the selected video signal into a display signal format suitable for a display section and supplying it to the display section; selecting a target video signal from a group of unselected video signals not including the selected video signal, and recognizing the signal type of the target video signal; generating a piece of video information from the result of recognition and storing the piece of video information in a storage section; and reading out, when accepting a switching instruction that instructs to select another video signal as a selected video signal, a piece of video information corresponding to it from the storage section and converting it into the format.

Abstract: A video signal conversion device performs the process of: selecting a selected video signal out of two or more video signals input; recognizing the signal type of the selected video signal; converting, in accordance with the result of recognition, the selected video signal into a display signal format suitable for a display section and supplying it to the display section; selecting a target video signal from a group of unselected video signals not including the selected video signal, and recognizing the signal type of the target video signal; generating a piece of video information from the result of recognition and storing the piece of video information in a storage section; and reading out, when accepting a switching instruction that instructs to select another video signal as a selected video signal, a piece of video information corresponding to it from the storage section and converting it into the format.

Abstract: A triaxially controlled X-ray diagnostic apparatus comprises a support unit having a first arm, a second arm, and a third arm which are capable of rotation on three mutually orthogonal axes, an X-ray generator mounted on an end of the third arm for irradiating an object under examination with X rays, an image intensifier, mounted on the other end of the third arm so that it is opposed to the X-ray generator, for detecting X rays transmitted through the object to provide an optical image, a TV camera connected to the image intensifier for converting the optical image into a video signal to provide an X-ray image of the object, a display unit for displaying the X-ray image, and rotation correction means for making rotation correction on an X-ray image displayed on the display unit on the basis of angles of rotation of the first, second and third arms when they are rotated from their reference position.

Abstract: An X-ray diagnostic apparatus comprising X-ray generating unit for generating an X-ray to a patient, X-ray image detecting unit, provided to be apposite to the X-ray generating unit to sandwich the patient therebetween, for detecting an X-ray image, a holding apparatus for rotatably holding the X-ray generating unit and x-ray image detecting unit at a rotation axis, which is a line connecting the X-ray generating unit to the X-ray image detecting unit, and a supporting apparatus for rotatably supporting the holding apparatus at the same rotation axis.

Abstract: A plurality of magnetized game pieces are inserted one by one in a piece holder frame of nonmagnetic material along a piece guide formed therein. In the row of game pieces, two adjacent pieces are held in contact with or spaced apart from each other under magnetic attraction or repulsion acting therebetween and the row length is variable and unpredictable. The piece holder frame may be formed with any desired number of piece guides in the form of a blind piece-insertion hole or an upstanding post. The game pieces may be permanent bar magnets themselves or take a composite form including a body portion of nonmagnetic material and one or more magnet pieces embedded in the body portion at each and thereof. To make the game further changeful, the game pieces may each be divided into two axial half sections which are joined together for relative rotation to enable reversion of its polarity.

Abstract: A kit for children's playing, fortune-telling, learning or the like use, including at least one pair of block pieces each carrying a figure thereon and at least one of which is of transparent material. The block pieces, of planar or cubic form, are laid one on the other to form a composite picture of the figures carried by the respective pieces, which is visible viewed from the transparent block side and changeable by changing the relative angular position of the block pieces. The cubic block pieces can each have three different figures respectively applied to its three faces forming a vertex so that the number of composite pictures obtainable therewith is multiplied. The wide variety of composite pictures obtainable with the play kit of the invention makes it highly attractive to children and also to grown-up people, despite of its extremely simple construction.