| US 7,573,462 B2 | ||
| Image display apparatus, multi display system, coordinate information output method, and program for implementing the method | ||
| Akihiro Ouchi, Kawasaki (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Jun. 03, 2005, as Appl. No. 11/145,310. | ||
| Claims priority of application No. 2004-167626 (JP), filed on Jun. 04, 2004. | ||
| Prior Publication US 2005/0270278 A1, Dec. 08, 2005 | ||
| Int. Cl. G06F 3/033 (2006.01); G09G 5/00 (2006.01) | ||
| U.S. Cl. 345—157 [345/173; 345/179; 345/1.2; 345/1.3; 178/18.01; 178/18.03; 178/19.01; 715/856; 715/857; 715/858; 463/37] | 11 Claims |
| 1. An image display apparatus for displaying an image on neighboring first and second display screens, comprising:
an output unit that outputs to an external device pointing information based on a position pointed by a pointer;
a first determining unit that determines whether or not the position pointed by the pointer is moved from an edge of the first
display screen to the second display screen after the pointer has come into continuous contact with the first display screen;
an acquiring unit that acquires a time period elapsed during which the pointer is out of contact with the edge of the first
display screen before the pointer comes into contact with the second display screen, when the first determining unit determines
that the pointer is moved from the edge of the first display screen after the pointer has come into continuous contact with
the first display screen; and
a second determining unit that determines whether or not the acquired elapsed time period is less than a predetermined time
period,
wherein said output unit outputs to the external device the pointing information indicative of the pointer continuously pointing
from the position where the pointer is out of contact from the first display screen to the position where the pointer comes
into contact with the second display screen, in a case where said second determining unit determines that the acquired elapsed
time period is less than the predetermined time period, and
wherein said output unit outputs to the external device the pointing information indicating that the pointer points at the
second display screen after outputting the pointing information indicating the pointer pointed at the edge of the first display
screen, in a case where said second determining unit determines that the acquired elapsed time period is longer than the predetermined
time period.
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