| US 7,595,831 B2 | ||
| Imaging apparatus, radiation imaging apparatus, and radiation imaging system | ||
| Toshio Kameshima, Kumagaya (Japan); Tadao Endo, Honjo (Japan); Tomoyuki Yagi, Honjo (Japan); Katsuro Takenaka, Kodama-gun (Japan); and Keigo Yokoyama, Honjo (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Apr. 19, 2007, as Appl. No. 11/737,592. | ||
| Claims priority of application No. 2006-118325 (JP), filed on Apr. 21, 2006; and application No. 2007-092029 (JP), filed on Mar. 30, 2007. | ||
| Prior Publication US 2007/0258008 A1, Nov. 08, 2007 | ||
| Int. Cl. H04N 3/14 (2006.01) | ||
| U.S. Cl. 348—308 | 13 Claims |
| 1. An imaging apparatus comprising:
a sensor array in which a plurality of pixels each including a photoelectric conversion element and a switching element are
arrayed in a row direction and a column direction;
signal wiring connected to a plurality of the switching elements provided in the column direction; and
a reading-circuit unit connected to the signal wiring,
wherein the reading-circuit unit includes a first operational area including a first amplifying circuit and a second operational
area including a second amplifying circuit connected to the first operational area, and
the first and second amplifying circuits are each arranged to be supplied with power within a range, the maximum of the power-supply
voltage range of the first amplifying circuit being larger than the maximum of a power-supply voltage range of the second
amplifying circuit.
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