Patent ID: 8031251
Filing Date: 2011-10-04
Classification: H04N

Abstract:
1. A charge transfer device having a charge transfer channel disposed in a charge transfer direction and a plurality of groups of four charge transfer electrodes disposed in the charge transfer direction for transferring signal charges disposed in the charge transfer channel in the charge transfer direction; a charge transfer signal generation circuit that selectively applies high level driving pulses φV wherein the charge transfer period is sub-divided into a plurality of sub-periods, each sub-period defined by a transition of one of the driving pulses applied to the charge transfer electrodes, and the sub-period or sub-periods in which the number of charge transfer electrodes in each group receiving high level driving pulses becomes minimum is/are longer than the sub-period or sub-periods in which the number of charge transfer electrodes in each group receiving high level driving pulses is not a minimum; and wherein during an initial time period signal charges are read out from pixels to the charge transfer channel through the assertion of high level driving pulses φV