Image pickup apparatus

摘要

The invention provides an image pickup apparatus including: an image pickup device including a memory portion for analog storage and a pixel portion; a first read-out control and processing portions that, in a first frame-period, read out a first-image-signal from a first-pixel-region of the pixel portion, and in a second frame-period longer than the first frame-period, read out a second-image-signal from a second-pixel-region of the pixel portion including the first-pixel-region, and store the read-out signals in the memory portion; a second read-out control and processing portions that read out from a memory portion an AF image signal related to the first-image-signal and a display image signal related to the second-image-signal; a focal point detecting portion that carries out contrast focal point detection based on the AF image signal; and an image display portion that displays an image based on the display image signal.

主权项

1. An image pickup apparatus comprising:
an image pickup device including a pixel portion having two-dimensionally arranged pixels and an analog memory in which an image signal read out from the pixel portion is stored; an image signal storage control portion that, in a first frame period, reads out a first image signal from a first pixel region of the pixel portion and stores the first image signal in the analog memory as well as, in a second frame period longer than the first frame period, reads out a second image signal including the first image signal from a second pixel region of the pixel portion including the first pixel region and having a larger number of pixels than the first pixel region and stores the second image signal in the analog memory; an image signal read-out control portion that reads out an image signal for focal point detection based on the first image signal and reads out an image signal for display based on the second image signal from the analog memory; a focal point detecting portion that carries out contrast focal point detection based on the image signal for focal point detection; and an image display portion that displays an image based on the image signal for display, wherein if a charge storage time of the second pixel region is longer than the first frame period, the image signal read-out control portion generates and reads out an image signal for display based on a signal obtained by adding the first image signal and the second image signal for each corresponding pixel position, and if the charge storage time of the second pixel region is equal to or smaller than the first frame period, the image signal read-out control portion generates and reads out an image signal for display based only on the second image signal.