Solid-state imaging apparatus and imaging system using the same

A solid-state imaging apparatus, comprising:

• a plurality of imaging pixels each configured to generate, through photoelectric conversion, electric charge as an imaging signal;
• a plurality of focus detection pixels each configured to generate, through photoelectric conversion, electric charge as at least a first focusing signal among first and second focusing signals used for a phase difference focus detection;
• and
• an adding unit configured to avoid adding the electric charge generated by the plurality of imaging pixels, and configured to add the electric charge generated by the plurality of focus detection pixels to generate an added focusing signal,
• wherein an operation for outputting the added focusing signal and an operation for outputting each of the first focusing signals without adding are selectively carried out.

A solid-state imaging apparatus, comprising:

• a plurality of imaging pixels each configured to generate, through photoelectric conversion, electric charge as an imaging signal;
• a plurality of focus detection pixels each configured to generate, through photoelectric conversion, electric charge as at least a first focusing signal among first and second focusing signals used for a phase difference focus detection;
• and
• an adding unit configured to add the electric charge generated by the plurality of imaging pixels to generate an added imaging signal, and configured to add the electric charge generated by the plurality of focus detection pixels to generate an added focusing signal,
• wherein a number of the focus detection pixels to be used for generating one added focusing signal by the adding unit is larger than a number of the imaging pixels to be used for generating one added imaging signal by the adding unit,
• wherein each of the imaging pixels and each of the focus detection pixels include:
• a photoelectric conversion unit configured to generate the electric charge through the photoelectric conversion,
• a floating diffusion region configured to convert the electric charge into a voltage signal, and
• a transfer transistor configured to transfer the electric charge from the photoelectric conversion unit to the floating diffusion region, and
• wherein the adding unit includes an adding transistor configured to allow the floating diffusion regions to be switched between one of a mutually connected state and a mutually disconnected state.

A solid-state imaging apparatus, comprising:

• a plurality of imaging pixels each configured to generate, through photoelectric conversion, electric charge as an imaging signal;
• a plurality of focus detection pixels each configured to generate, through photoelectric conversion, electric charge as at least a first focusing signal among first and second focusing signals used for a phase difference focus detection;
• and
• an adding unit configured to avoid adding the electric charge generated by the plurality of imaging pixels, and configured to add the electric charge generated by the plurality of focus detection pixels to generate an added focusing signal,
• wherein each of the imaging pixels and each of the focus detection pixels include:
• a photoelectric conversion unit configured to generate the electric charge through the photoelectric conversion,
• a floating diffusion region configured to convert the electric charge into a voltage signal, and
• a transfer transistor configured to transfer the electric charge from the photoelectric conversion unit to the floating diffusion region, and
• wherein the adding unit includes an adding transistor configured to allow the floating diffusion regions to be switched between one of a mutually connected state and a mutually disconnected state.