| 摘要 |
PURPOSE: An image signal processor is provided to independently supply power to each of a signal processing circuit and an output circuit, thereby reducing power consumption. CONSTITUTION: An image signal processor performs a predetermined signal processing on a first image signal, which is generated by a solid-state imaging device, and generates a second image signal, which is provided to an external device and complies with a predetermined format. The image signal processor comprises a first regulation circuit(22) supplied with a power supply voltage to generate a first regulated voltage, which is in accordance with an output level of the solid-state imaging device; a second regulation circuit(23) supplied with the power supply voltage to generate a second regulated voltage, which corresponds to an input level of the external device; a signal processing circuit(9) connected to the solid-state imaging device and the first regulator, for operating with the first regulated voltage wherein the second regulator shifts the second regulated voltage in accordance with the input level of the external device; and an output circuit(14) connected to the second regulator and the signal processing circuit, for operating with the second regulated voltage. The signal processing circuit performs the predetermined signal processing on the first image signal and generates the second image signal. The output circuit receives the second image signal from the signal processing circuit and provides the second image signal to the external device.
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