Image display apparatus, multi display system, coordinate...

Details Image display apparatus, multi display system, coordinate... Image display apparatus, multi display system, coordinate...

2005-06-03

2009-08-11

Tran, Henry N (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

C345S173000, C345S179000, C345S001200, C345S001300, C178S018010, C178S018030, C178S019010, C715S856000, C715S857000, C715S858000, C463S037000

Reexamination Certificate

active

07573462

ABSTRACT:
An image display apparatus which is capable of operating smoothly over a plurality of image display devices. When a pen has come into continuous contact with a first display screen, a system controller determines whether or not the pen has got out of contact with an edge of the first display screen. When the system controller determines that the pen has got out of contact with the first display screen at the edge thereof, a time period elapsed is measured while the pen is held out of contact with the first display screen at the edge thereof. When the measured time period is less than a predetermined time period, the system controller outputs pointing information indicative of a position of the edge of the first display screen with which the pen got out of contact, to indicate that the pen has been held in the continuous contact with the first display screen.

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