Patent ID: 6980245

Claim:
A driving method for a solid-state image sensing device having a plurality of sensor portions arranged two-dimensionally in horizontal and vertical directions, and a vertical charge transfer portion adjacent said plurality of sensor portions provided with transfer electrodes comprising the steps of: selectively applying high level driving pulses to groups of said transfer electrodes in a vertical transfer period; and transferring signal charges read out from said plurality of sensor portions in the vertical direction; wherein a period during a vertical transfer operation in which the number of groups of transfer electrodes receiving high level driving pulses becomes minimum is longer than that of other periods, wherein individual groups of transfer electrodes are correspondingly associated with four systems and the vertical transfer period is divided into eight from periods t 1 through t 8 , wherein periods t 2 , t 4 , t 6 and t 8 , in which the number of groups of said transfer electrodes receiving high level driving pulses is two, are longer than the periods t 1 , t 3 , t 5 and t 7 , in which the number of groups of said transfer electrodes receiving said high level driving pulses becomes three.