Abstract: A semiconductor device having favorable display quality is provided. The semiconductor device is provided with a display portion, a line-of-sight sensor portion, a control portion, and an arithmetic portion. The line-of-sight sensor portion has a function of obtaining first information showing a direction of a user's line of sight. The arithmetic portion has a function of determining a first region including a gaze point of the user on the display portion with use of the first information and a function of increasing a definition of an image displayed on the first region. Light emitted from the display portion may be used to obtain the first information showing the direction of the line of sight.

Abstract: An object of this invention is to provide a game device that can add much to the production of the game. The invention is a game device for displaying a game image which expresses a virtual three-dimensional space, which is characterized in that it displays the first action scene between the first player character and the first enemy character and the second action scene between the second player character and the second enemy character based on the predetermined camera angle to project the first player character and the first enemy character related to the predetermined command which is given to the first player character by the player.

Abstract: An object of this invention is to provide a game device that can add much to the production of the game. The invention is a game device for displaying a game image which expresses a virtual three-dimensional space, which is characterized in that it displays the first action scene between the first player character and the first enemy character and the second action scene between the second player character and the second enemy character based on the predetermined camera angle to project the first player character and the first enemy character related to the predetermined command which is given to the first player character by the player.

Abstract: An object of this invention is to provide a game device that can add much to the production of the game. The invention is a game device for displaying a game image which expresses a virtual three-dimensional space, which is characterized in that it displays the first action scene between the first player character and the first enemy character and the second action scene between the second player character and the second enemy character based on the predetermined camera angle to project the first player character and the first enemy character related to the predetermined command which is given to the first player character by the player.

Abstract: According to the present invention, a jig for fixing a bearing with a tapered bore through a tapered adapter sleeve on a rotational shaft comprises a positioning member which is attached to a housing receiving the bearing and which has a positioning surface for positioning the bearing in the axial direction, and drawing means which engages with the tapered adapter sleeve and which have driving means for moving the drawing means axially so that the tapered adapter sleeve is moved toward the positioning member. Movement of the tapered adapter sleeve generates strong fixing forces between the tapered bore and the tapered adapter sleeve and between the tapered adapter sleeve and the shaft. The positioning surface contacts with an end of inner ring of the bearing, which is located on the small diameter side of tapered bore.

Abstract: Analog signals, +sin .theta.a, -sin.theta.a, +cos.theta.a and -cos.theta.a where .theta. is a measured angle, are composed into a sine and a cosine signal phase shifted by 2.pi.k/n where k is one of 0, 1, 2, . . . n as determined by values from the most significant digit to a .pi./n bit digit of a binary command angle lying in one of 2n equal intervals into which a range of 0 to 2.pi. is divided. The phase shifted cosine signal is attenuated as a linear function approximating a tangent of the true value of data expressed by all the remaining digits of the command angle or of its complement as determined by the .pi./n bit digit. The attenuated cosine signal is added to the phase shifted sine signal for the true value of the data and subtracted from the latter for its complement providing an analog deviation between both angles.