Solid-state imaging device and camera system

摘要

A solid-state imaging device and a camera system are provided. The solid-state imaging device capable of performing an intermittent operation includes a pixel unit and a pixel signal readout unit for reading out a pixel signal from the pixel unit in units of a plurality of pixels for each column. The pixel signal readout circuit includes a plurality of comparators and a plurality of counters whose operations are controlled by outputs of the comparators. Each of the comparators includes an initializing switch for determining an operating point for each column at a start of row operation, and is configured so that an initialization signal to be applied to the initializing switch is controlled independently in parallel only a basic unit of the initialization signal used for a horizontal intermittent operation, and the initializing switch is held in an off-state at a start of non-operating row.

主权项

1. An imaging device comprising:
a first analog-to-digital converter including:
a first comparator circuit configured to output a first determination signal based on a first analog signal;a first storing circuit configured to store a first digital signal based on the first determination signal; anda first reset switch configured to reset the first comparator at least before an analog-to-digital conversion operation; and a second analog-to-digital converter including:
a second comparator circuit configured to output a second determination signal based on a second analog signal;a second storing circuit configured to store a second digital signal based on the second determination signal;a second reset switch configured to reset the second comparator at least before the analog-to-digital conversion operation; wherein during a column-intermittent mode, the first analog-to-digital converter is in an ON-state, and the second analog-to-digital converter selectively switched between an OFF-state and an ON-state.