Solid state imaging apparatus and driving method of solid state imaging apparatus

A solid state imaging apparatus, comprising:

• a semiconductor substrate of one electric conductive type;
• a multiplicity of photoelectric conversion elements arranged on the semiconductor substrate in rows and columns, and each of which generates a signal electric charge corresponding to incident rays;
• a vertical electric charge transferring device that is arranged between the columns of the photoelectric conversion elements in a vertical direction and transfers the signal electric charges generated by the photoelectric conversion elements;
• a horizontal electric charge transferring device that temporarily stores the signal electric charges transferred from the vertical electric charge transferring device and transfers the signal electric charges to a horizontal direction in a sequential order, wherein the horizontal electric charge transferring device comprises at least two lines of horizontal shift registers and an electrode structure with which one shift register can transfer the signal electric charges to a direction that is 180 degrees different from another shift register and also can transfer the signal electric charges to a same direction as the another shift register continuously with the other shift register by changing driving of at least one of the shift registers;
• and
• output detecting devices that detect the signal electric charges transferred by the horizontal electric charge transferring device.