| US 7,573,473 B2 | ||
| Image display device, image display system and electronic device | ||
| Tatsuro Yamazaki, Machida (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Jun. 15, 2005, as Appl. No. 11/152,171. | ||
| Claims priority of application No. 2004-189287 (JP), filed on Jun. 28, 2004. | ||
| Prior Publication US 2005/0285849 A1, Dec. 29, 2005 | ||
| Int. Cl. G09G 5/00 (2006.01) | ||
| U.S. Cl. 345—212 [345/211; 345/213; 345/214] | 9 Claims |
| 1. An image display device comprising:
a panel driving unit supplying a driving signal to a display panel, wherein said panel driving unit outputs a power source
control signal;
an image processing unit outputting an image signal to said panel driving unit, wherein said image processing unit outputs
a power source control signal different from the power source control signal outputted by said panel driving unit;
a power source supplying electric power to said panel driving unit and said image processing unit; and
a logical operation unit, to which the power source control signals respectively outputted by said panel driving unit and
said image processing unit are inputted, performing a logical operation based on the inputted power source control signals
outputted by said panel driving unit and said image processing unit,
wherein a power supply state of said power source is controlled by an output of said logical operation unit, and
wherein in the case that said image processing unit is outputting the power source control signal to request power on and
said panel driving unit is outputting the power source control signal to request power off, in response to said panel driving
unit receiving the electric power from said power source, said panel driving unit outputs the power source control signal
to request power on.
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