Method of capturing an image with an image sensor

A method for capturing an image with an array of pixels, each pixel comprising a photosensitive accumulation node, and a capacitive node coupled thereto, the method comprising:

• a cycle of reading a current pixel comprising
• connecting a capacitive node of the current pixel to at least one capacitive node of previous pixels already read,
• coupling the capacitive node of the current pixel to an output line,
• coupling the at least one capacitive node of the previous pixels to the output line,
• reading a first voltage of the capacitive node of the current pixel through the output line,
• transferring charge from an accumulation node to the capacitive node of the current pixel,
• reading a second voltage of the capacitive node of the current pixel through the output line, and
• disconnecting the capacitive node of the current pixel from the at least one capacitive node of the previous pixels;
• and
• a cycle of reading a next pixel overlapping the cycle of reading the current pixel and comprising accumulating charge in an accumulation node of the next pixel while the capacitive node of the current pixel is connected to the at least one capacitive node of the previous pixels.

A method for capturing an image with an array of pixels, each pixel comprising a photosensitive accumulation node, and a capacitive node coupled thereto, the method comprising:

• reading a current pixel comprising
• connecting a capacitive node of the current pixel to at least one capacitive node of previous pixels already read, and
• reading a first voltage of the capacitive node of the current pixel;
• and
• reading a next pixel overlapping the reading of the current pixel and comprising accumulating charge in an accumulation node of the next pixel while the capacitive node of the current pixel is connected to the at least one capacitive node of the previous pixels.

An imaging device comprising:

• an array of pixels;
• and
• a controller unit configured to select and read said array of pixels, each pixel comprising a photosensitive accumulation node, and a capacitive node coupled thereto;
• said controller unit configured to perform:
• a cycle of reading a current pixel comprising
• connecting a capacitive node of the current pixel to at least one capacitive node of previous pixels already read,
• coupling the capacitive node of the current pixel to an output line,
• coupling the at least one capacitive node of the previous pixels to the output line,
• reading a first voltage of the capacitive node of the current pixel through the output line,
• transferring charge from an accumulation node to the capacitive node of the current pixel,
• reading a second voltage of the capacitive node of the current pixel through the output line, and
• disconnecting the capacitive node of the current pixel from the at least one capacitive node of the previous pixels;
• and
• a cycle of reading a next pixel overlapping the cycle of reading the current pixel and comprising accumulating charge in an accumulation node of the next pixel while the capacitive node of the current pixel is connected to the at least one capacitive node of the previous pixels.

An imaging device comprising:

• an array of pixels;
• and
• a controller unit configured to select and read said array of pixels, each pixel comprising a photosensitive accumulation node, and a capacitive node coupled thereto;
• said controller unit configured to perform:
• reading a current pixel comprising
• connecting a capacitive node of the current pixel to at least one capacitive node of previous pixels already read, and
• reading a first voltage of the capacitive node of the current pixel;
• and
• reading a next pixel overlapping the reading of the current pixel and comprising accumulating charge in an accumulation node of the next pixel while the capacitive node of the current pixel is connected to the at least one capacitive node of the previous pixels.