Signal processing apparatus, signal processing method, image pickup element, and imaging apparatus

摘要

Provided is a signal processing apparatus, including: an A/D conversion unit configured to perform A/D conversion of a first signal, A/D conversion of a second signal, A/D conversion of a third signal, and A/D conversion of a fourth signal; and a correlated double sampling processing unit configured to generate a first output signal by performing correlated double sampling using a first digital data item obtained through the A/D conversion of the first signal, and a second digital data item obtained through the A/D conversion of the second signal, a second output signal by performing correlated double sampling using a third digital data item obtained through the A/D conversion of the third signal, and a fourth digital data item obtained through the A/D conversion of the fourth signal, and a third output signal by performing correlated double sampling using the first output signal and the second output signal.

主权项

1. A signal processing apparatus, comprising:
an A/D conversion unit configured to perform
A/D conversion of a first signal that is read out from unit pixels under a state in which reset signals of the unit pixels have been set to be high by a shutter operation of resetting floating diffusions of the unit pixels, the unit pixels being configured to perform photoelectric conversion of incident light under a state in which full depletion is prevented,A/D conversion of a second signal that is read out from the unit pixels under a state in which the reset signals of the unit pixels have been set to be low by the shutter operation,A/D conversion of a third signal that is read out from the unit pixels under a state in which the reset signals of the unit pixels have been set to be low by a read operation of reading out electric charge from the floating diffusions of the unit pixels, the electric charge being obtained through the photoelectric conversion, andA/D conversion of a fourth signal that is read out from the unit pixels under a state in which the reset signals of the unit pixels have been set to be high by the read operation; and a correlated double sampling processing unit configured to generate
a first output signal by performing correlated double sampling using
a first digital data item obtained through the A/D conversion of the first signal by the A/D conversion unit, anda second digital data item obtained through the A/D conversion of the second signal by the A/D conversion unit,a second output signal by performing correlated double sampling using
a third digital data item obtained through the A/D conversion of the third signal by the A/D conversion unit, anda fourth digital data item obtained through the A/D conversion of the fourth signal by the A/D conversion unit, anda third output signal by performing correlated double sampling using
the first output signal, andthe second output signal.