Solid-state image pickup device

1. Field of the Invention A solid-state image pickup device is provided with plural blocks, each comprising at least two pixels, allowing reading of signals of pixel blocks at high speed without signal loss. The output signals of the blocks are connected in common, respectively through block buffers, thereby providing the maximum or minimum value of the pixels. Each block buffer has an input at the base of a self-biased transistor and an output in an emitter follower circuit. There also are provided first photoelectric conversion elements for reading out the photoelectric conversion charges of respective pixels and second photoelectric conversion elements for reading out the photoelectric conversion charges respectively in blocks, each composed of plural pixels, and the outputs of the second photoelectric conversion elements are connected in common to a common line through maximum output circuits.