Patent ID: 8077253
Filing Date: 2011-12-13
Classification: H04N

Abstract:
1. A solid-state imaging device comprising: a light receiving area configured to include a plurality of different-color pixels each performing photoelectric conversion; an analog-to-digital conversion circuit configured to convert a photo-electrically converted analog signal in each pixel of the light receiving area to a digital signal; and a digital signal processing circuit configured to receive the digital signal output from the analog-to-digital conversion circuit, and configured to perform a digital processing with respect to the received digital signal, and configured to output a digital-processed signal, the digital signal processing circuit including: a first signal processing block configured to perform a first processing for preventing a noise component included in a digital signal of a pixel positioning on the center of several pixels included in a desired area of the light receiving area; and a second signal processing block configured to perform a second processing for extracting a high-frequency component existing in a digital signal of a pixel positioning on the center of several pixels included in a desired area of the light receiving area to restore apparent resolution; wherein the digital signal processing circuit further including: a line memory included in either of the first and second signal processing blocks, the line memory configured to output a plurality of horizontal line signals in the light receiving area; wherein the second signal processing block including: a shift register configured to receive an output of the line memory, and configured to output a plurality of pixel digital signals positioning at a periphery of the pixel positioning on the center restoring the apparent resolution and having color different from the pixel positioning on the center; and a spatial band-pass filter configured to receive an output of the shift register, and configured to include a fixed spatial coefficient for extracting a high-frequency component existing in a digital signal of the pixel positioning on the center.