| 摘要 |
An imaging apparatus and method for driving solid-state imaging device are provided to concurrently obtain two types of imaging signals by controlling the exposure times for photoelectric conversion elements and which can reduce noise contained in the imaging signals. A taking-image system of the digital camera includes a taking lens(1), a solid-state imaging device(5), an aperture diaphragm(2) which is arranged between the taking lens and the solid-state imaging device, an infrared cut filter(3); and an optical low-pass filter(4). A system control section(11) for controlling the entire electric controlling system of the digital camera controls a flash light emitting section(12) and a light receiving section(13). The system control section also controls a lens driving section(8) so as to adjust a position of the taking lens to a focusing position and to adjust zooming. Furthermore, the system control section controls the aperture diaphragm through a diaphragm driving section(9) so as to adjust an exposure amount. The electric control system of the digital camera further includes a main memory(16), a memory control section(15) connected to the main memory, a digital signal processing section(17) for generating image data by executing an interpolation calculation, a gamma correction calculation, RGB/YC conversion processing and image synthesizing processing; a compression/expansion processing section(18) for compressing image data, which is generated by the digital signal processing section, into JPEG form and for expanding the compressed image data; an integrating section(19) for integrating photometry data to obtaining a gain for a white balance correction, which is executed by the digital signal processing section, an external memory control section(20) to which a detachable recording medium(21) is connected; and a display control section(22) to which a liquid crystal display section(23) mounted on a rear face of the camera is connected. These components are connected to each other through a control bus(24) and a data bus(25) and controlled by commands given from the system control section.
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