Solid-state imaging device haing a control section controlling initializing operation of pixel units based on an absolute value of trigger data output

A solid-state imaging device comprising an imaging photodetecting section where M×N pixel units P1,1 to PM,N are two-dimensionally arrayed in M rows and N columns, a trigger photodetecting section including a trigger photodiode that generates charge of an amount according to an incident light amount, a trigger data output section that outputs trigger data according to an amount of charge generated in the trigger photodetecting section, and a control section that controls operation of each pixel unit Pm,n of the imaging photodetecting section, wherein

• each pixel unit Pm,n includes a photodiode that generates charge of an amount according to an incident light amount, a first charge accumulating section that accumulates a charge generated in the photodiode, a second charge accumulating section to which a charge accumulated in the first charge accumulating section is transferred, a first initializing section that initializes charge accumulation in the first charge accumulating section, a second initializing section that initializes charge accumulation in the second charge accumulating section, a transfer section that transfers a charge accumulated in the first charge accumulating section to the second charge accumulating section, and an output section that outputs pixel data according to an amount of charge accumulated in the second charge accumulating section to a wiring line Ln, and
• the control section,
• when an absolute value of trigger data output from the trigger data output section has changed into a state of being in excess of a first threshold from a state of being less than the first threshold, and then the state where the absolute value of the trigger data is in excess of the first threshold has continued for a predetermined time τ1 or more, judges it as a start of a light incidence, and ends an initializing operation by the first initializing section and starts a charge accumulating operation by the first charge accumulating section for the M×N pixel units P1,1 to PM,N of the imaging photodetecting section, and
• when an absolute value of trigger data output from the trigger data output section has changed into a state of being less than a second threshold from a state of being in excess of the second threshold, and then a state where the absolute value of the trigger data is not in excess of the second threshold has continued for a predetermined time τ2 or more, judges it as an end of a light incidence, and causes a charge transferring operation by the transfer section and a data outputting operation by the output section to be performed for the M×N pixel units P1,1 to PM,N of the imaging photodetecting section (provided that M and N are each an integer not less than 2, m is an integer not less than 1 and not more than M, n is an integer not less than 1 and not more than N, and τ2>τ1).