Image display device having shift commands and automatic scroll process

An image display device including:

• input means for inputting various commands and data;
• display means having a display screen;
• basic image data for storing part or whole of basic image data formed of a dot matrix;
• and
• display control means responsive to a corresponding one of said various commands input by said input means for converting a portion of said basic image data in a display range to display image data to display said display image data on said display screen,
• said input means comprising:
• start command means for inputting a start command for starting an automatic scroll process for automatically continuously shifting said display range in a scrolling manner in a predetermined one of upward, downward, leftward and rightward directions on said basic image data, and
• shift command means for inputting a display range shift command for shifting, at a time point before a start of said automatic scroll process or during said automatic scroll process, said display range set at said time point, selectively in said upward, downward, leftward and rightward directions,
• wherein said display range is capable of being shifted not only in the direction of scrolling but also in a direction perpendicular to the direction of automatic scrolling, during said automatic scroll process, and
• wherein said display control means is responsive to said start command input by said start command means for starting said automatic scroll process, and to said display range shift command input by said shift command means for changing said display image data to thereby display resulting display image data on said display screen.