Patent ID: 8803946

Claim:
An image signal processing device comprising: a vertical control unit having a vertical counter and a vertical tilt register, wherein a first correction value is stored in the vertical tilt register and added to the vertical counter when a vertically tilted transforming process is performed; a horizontal control unit having a horizontal counter and a horizontal tilt register, wherein a second correction value is stored in the horizontal tilt register and added to the horizontal counter when a horizontally tilted transforming process is performed; a first transforming process unit configured to perform a transforming process for rotating a left eye image on a left eye image signal used to display the left eye image as pixels each having rectangular coordinates x and y based on the first correction value and the second correction value; a second transforming process unit configured to perform a transforming process for rotating a right eye image on a right eye image signal used to display the right eye image as pixels each having rectangular coordinates x 1 and y 1 ; a projector unit configured to project the left eye image signal obtained by being subjected to the transforming process performed using the first transforming process unit with first linearly polarized light and the right eye image signal obtained by being subjected to the transforming process performed using the second transforming process unit with second linearly polarized light superposed upon one another to obtain an output image signal, the projected left eye image and projected right eye image displayed on a display device; and a resolution transforming unit configured to perform a transforming process for rotating a selected one of the displayed left eye image or the displayed right eye image displayed under the instruction of a user, wherein the unselected left eye image or right eye image is automatically rotated an equivalent amount in a direction opposite to that of the image whose rotation has been instructed from the user, wherein when the left eye image is selected for resolution transforming then the resolution transforming unit transforms coordinates x and y to display coordinates X and Y, respectively, according to the formula: [ X Y ] = [ 1 a 0 1 ] ⁡ [ x y ] where a is less than or equal to 4 pixels/1000 pixels.