| US 7,491,960 B2 | ||
| Radiographic apparatus and control method therefor | ||
| Katsuro Takenaka, Kodama-gun (Japan); Tadao Endo, Honjyo (Japan); Tomoyuki Yagi, Chohu (Japan); and Toshio Kameshima, Kumagaya (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Mar. 11, 2005, as Appl. No. 11/79,504. | ||
| Claims priority of application No. 2004-071171 (JP), filed on Mar. 12, 2004. | ||
| Prior Publication US 2005/0199834 A1, Sep. 15, 2005 | ||
| Int. Cl. G01N 23/04 (2006.01) | ||
| U.S. Cl. 250—580 | 13 Claims |
| 1. A radiographic apparatus comprising:
a photoelectric conversion device array in which a plurality of pixels are arrayed on a substrate, wherein each of the pixels
includes at least a photoelectric conversion device, and wherein said photoelectric conversion device array can be reset in
a reset operation, and said photoelectric conversion can be initialized in a refresh operation and can generate a signal in
a photoelectric conversion operation; and
a processor configured to determine whether to perform the refresh operation on the basis of image data acquired by the signals
output from said photoelectric conversion device array,
wherein said processor does not perform the refresh operation after the photoelectric conversion operation when determining
not to perform the refresh operation, performs the refresh operation after the photoelectric conversion operation when determining
to perform the refresh operation, and performs the reset operation after the photoelectric conversion operation regardless
of whether the refresh operation is performed or not.
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