Patent ID: 6271881
Filing Date: 2001-08-07
Classification: H04N

Abstract:
A color image pickup apparatus comprising:a photo-to-electric conversion section subjected to progressive scanning;a first delay circuit for delaying an output signal of the photo-to-electric conversion section;a first adder for adding the output signal of the photo-to-electric conversion section and an output signal of the first delay circuit;a second delay circuit for delaying the output signal of the first delay circuit;a second adder for adding the output signal of the photo-to-electric conversion section and an output signal of the second delay circuit;a third delay circuit for delaying an output signal of the first adder;a first subtracter for implementing subtraction between the output signal of the first adder and an output signal of the third delay circuit;a fourth delay circuit for delaying an output signal of the second adder;a second subtracter for implementing subtraction between the output signal of the second adder and an output signal of the fourth delay circuit;a first sign change circuit for inverting a sign of an output signal of the first subtracter;a first selector for periodically and alternately selecting one of the output signal of the first subtracter and an output signal of the first sign change circuit;a second sign change circuit for inverting a sign of an output signal of the second subtracter;a second selector for periodically and alternately selecting one of the output signal of the second subtracter and an output signal of the second sign change circuit; andmeans for generating two different color-difference signals in response to an output signal of the first selector and an output signal of the second selector.