Patent ID: 8350958

Claim:
An imaging apparatus comprising: an image processing unit configured to image a subject to output imaging data; a display unit; a plurality of control units configured to control an imaging function, wherein said plurality of control units include an imaging control unit configured to control said image processing unit, a storage control unit configured to store said imaging data in a storage medium to be detachably mounted to a device main unit, and a display control unit configured to cause said display unit to display an image based on said imaging data; a requesting unit configured to request execution of start-up processing of a plurality of said control units; a detecting unit configured to detect movement to be applied to said device main unit; and a start-up control unit configured to cause, upon said detecting unit detecting particular movement in a power-off state wherein the operation of said device main unit externally appears to be stopped, each of a plurality of said control units to start said start-up processing with a predetermined operation clock as a first processing mode for causing each of a plurality of said control units to start operation still in said power-off state, and upon execution of said start-up processing being requested from said requesting unit before all pieces of said start-up processing are completed, cause a plurality of said control units to execute the rest of said start-up processing with a high-speed operation clock that is higher than said predetermined operation clock as said second processing mode, and cause a plurality of said control units to start reception of an imaging command according to the states of said start-up processing of a plurality of said control units, wherein said start-up control unit causes said imaging control unit, said storage control unit and said display control unit to start said start-up processing with said predetermined operation clock as a first processing mode for causing each of said storage control unit and said display control unit to start operation, and upon execution of said start-up processing being requested from said requesting unit after completion of said start-up processing by said display control unit, causes said display control unit to light said display unit.