Patent ID: 8648901

Claim:
A head separated type imaging apparatus comprising a head unit and a main unit which are separated, the head unit imaging a subject and the main unit processing an image signal transmitted from the head unit, wherein the head unit comprises: an imaging unit having a plurality of pixels to image the subject; and a storage unit configured to store correction information obtained for each of the plurality of pixels based on a magnitude of noise existing in signals from each of the plurality of pixels and to store a number of pixels for which the number of bits is larger than a predetermined threshold, and wherein the main unit comprises: a correction information obtaining unit configured to obtain a part of correction information corresponding to a pixel having a larger number of bits than the predetermined threshold from the storage unit, the part of correction information being obtained from higher-order bits of the correction information, the correction information obtaining unit further obtains remaining correction information from the storage unit after obtaining the part of correction information from higher-order bits in priority and outputs a reading completion signal when a number of the correction information read out from the storage unit in priority becomes equal to the number of pixels stored in the storage unit; and a correcting unit configured to correct, when the correction information obtaining unit completes obtaining of the part of correction information, the image signal transmitted from the imaging unit of the head unit based on the obtained correction information, the correcting unit further corrects, when the reading completion signal is outputted from the correction information obtaining unit, the image signal transmitted from the imaging unit of the head unit based on the correction information obtained by the correction information obtaining unit.