Patent ID: 7110038

Claim:
An image signal processor for performing a predetermined signal processing on a first image signal, which is generated by a solid-state imaging device, and generating a second image signal, which is provided to an external device and complies with a predetermined format, the image signal processor comprising: a first regulator 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 regulator supplied with the power supply voltage to generate a second regulated voltage, which corresponds to an input level of the external device, wherein the second regulator shifts the second regulated voltage in accordance with the input level of the external device; a signal processing circuit connected to the solid-state imaging device and the first regulator, for operating with the first regulated voltage, wherein the signal processing circuit performs the predetermined signal processing on the first image signal and generates the second image signal; and an output circuit connected to the second regulator, the signal processing circuit, and the external device, for operating with the second regulated voltage, wherein the output circuit receives the second image signal from the signal processing circuit and provides the second image signal to the external device, wherein the first regulated voltage is less than the power supply voltage.