Abstract: An eardrum incision device includes a main body, a replaceable inserting portion and a display device. The replaceable inserting portion is detachably connected to the main body. The replaceable inserting portion has an insertion end located on a side far away from the main body and adapted to be inserted into an ear canal of a user. The replaceable inserting portion includes an image-capturing device, a mounting hole and a replaceable incision component. The image-capturing device is disposed at the insertion end. The mounting hole extends in a direction from the insertion end toward the main body. The replaceable incision component is removably disposed in the mounting hole and adapted to pierce out of the mounting hole in a direction toward the insertion end, so as to incise the eardrum of the user. The display device is disposed on the main body and electrically connected to the image-capturing device.

Abstract: A digital imaging device such as a digital camera has an imaging-sensor clock that may be adjusted dynamically in accordance with lighting conditions measured through feedback from the imaging sensor. Selecting a relatively higher clock frequency under bright conditions provides shorter shutter delay, and selecting a relatively lower clock frequency under dim conditions helps to reduce electrical noise. Dynamic adjustment of the clock frequency in this manner can also reduce power consumption, thereby extending battery life.