US Patent No. 9,369,649

IMAGING APPARATUS, IMAGING SYSTEM, AND METHOD FOR DRIVING IMAGING APPARATUS


Patent No. 9,369,649
Issue Date June 14, 2016
Title Imaging Apparatus, Imaging System, And Method For Driving Imaging Apparatus
Inventorship Daisuke Kobayashi, Kawaguchi (JP)
Tomoya Onishi, Ayase (JP)
Takeru Ohya, Machida (JP)
Assignee Canon Kabushiki Kaisha, Tokyo (JP)

Claim of US Patent No. 9,369,649

1. An imaging apparatus comprising:
a pixel including a conversion unit configured to generate an electric charge based on an incident ray and an AD conversion
unit configured to convert a signal based on the electric charge generated by the conversion unit into a digital signal; a
first bias line electrically connected to the conversion unit; a capacitance element configured to store a voltage based on
a potential applied to the first bias line, wherein the AD conversion unit is driven by the voltage stored in the capacitance
element;

a second bias line to which a potential different from the potential applied to the first bias line is applied, wherein the
voltage stored in the capacitance element is a voltage based on a potential difference between the potentials applied to the
first and second bias lines; and a switch,

wherein the capacitance element stores the voltage based on the potential difference between a first and a second nodes of
the capacitance element, the first node is electrically connected to the AD conversion unit, the second node is electrically
connected to the first bias line, and the switch is configured to select a conduction state or a non-conduction state between
the first node and the second bias line.